US20070129006A1 - Method and apparatus for communicating within a wireless music sharing cluster - Google Patents

Abstract

A method and apparatus is disclosed for enabling communication and music transfer within a cluster of mobile audio playback devices. In one aspect, a method is disclosed for maintaining physical proximity between devices with a cluster of devices to enable audio signal transmission and communication between devices. In another aspect, a method is disclosed by which a member of a cluster can make a request for a music selection to be played within the cluster. In another aspect, an audio entertainment device is enabled for music transmission and reception within the cluster of devices coincident with communication and exchange of dynamic information.

Description

CROSS REFERENCE TO RELATED PATENT APPLICATIONS
• This application is a divisional application of and claims priority to pending U.S. patent application Ser. No. 10/513,702 entitled, “Localized Audio Networks and Associated Digital Accessories” based on PCT Application PCT/US03/14154 having the same title claiming priority from Provisional Patent Application No. 60/378,415, filed May 6, 2002, titled “Localized Audio Networks and Associated Digital Accessories,” and from Provisional Patent Application No. 60/388,887, filed Jun. 14, 2002, titled “Localized Audio Networks and Associated Digital Accessories,” and from Provisional Patent Application No. 60/452,230, filed Mar. 4, 2003, titled “Localized Audio Networks and Associated Digital Accessories,” the contents of each of which are incorporated herein by reference.
TECHNICAL FIELD
• The present invention relates to localized wireless audio networks for shared listening of recorded music, and wearable digital accessories for public music-related display, which can be used in conjunction with one another.
BACKGROUND
• Portable audio players are popular consumer electronic products, and come in a variety of device formats, from cassette tape “boom boxes” to portable CD players to digital flash-memory and hard-disk MP3 players. While boom boxes are meant to make music to be shared among people, most of the portable audio players are designed for single person use. While some of this orientation to personal music listening is due to personal preference, other important considerations are the technical difficulties of reproducing music for open area listening with small, portable devices, as well as the social imposition of listening to music in public places with other people who do not wish to listen to the same music, or who are listening to different music that would interfere with one's own music.
• There are numerous audio devices that are designed to allow the transfer of music from one portable audio device to another, especially through those that store music in the MP3 audio format. These devices suffer from two main difficulties: firstly, listeners still do not hear the music simultaneously, which is the optical manner to share music, and secondly, there are serious copyright issues associated with the transfer of music files. Thus, it would be preferable for the transfer of the music for simultaneous enjoyment, and which did not result in a permanent transfer of the music files between the devices, so as not to infringe on the intellectual property rights of the music owners.
• Given the sharing of music, listeners will on occasion want to purchase the music for themselves. In such case, it would be beneficial for the user to have a way to obtain the music with minimal effort. It would further be desirable for there to be a way to keep track of the person from whom the listener heard the music, so that the person could be in some way encouraged or compensated.
• The earphones associated with a portable music player admit a relatively constant fraction of ambient sound. If listening to music with a shared portable music device, however, one might at times want to talk with a friend, and at times listen to music without outside audible distraction. In such case, it would be desirable to have an earphone for which the amount of external ambient sound could be manually set.
• Furthermore, many people like to show their individual preferences, to exhibit themselves, and to demonstrate their group membership. Furthermore, music preferences and listening to music together are among the more important means by which individuals express their individual and group identities. It would be beneficial for there to be a way for individuals to express themselves through their music, and for groups of individuals listening to music together, to be able to demonstrate their group enjoyment of the music.
• One means for a person to express their identity through motion would be through having wearable transducers wherein the transduction signal is related to the music. If the transducer were a light transducer, this would result in a display of light related to the music that was being listened to. It would be further beneficial if there were means by which a person could generate control signals for the transducer so that instead of a wholly artificial response to the music, the transducer showed a humanly interpreted display. It would be preferable if these signals could be shared between people along with music files, so that others could entertain or appreciate the light display so produced.
• At popular music concerts, there is often a “light show” that pulsates in rough relation to the music. In contrast to the generally vigorous light show, the patrons at the concerts often have light bracelets or other such static displays which are used to join with the displays on the stage. It would be beneficial for there to be a way in which patrons could participate in the light show in order to enhance their enjoyment of the concert.
• It is to the solution of these and other problems that the present invention is directed.
SUMMARY OF THE INVENTION
• It is an object of the present invention to provide users a means of listening to music together using mobile devices.
• It is also an object of the present invention to provide users a means of choosing with whom to listen to music.
• It is additionally an object of the present invention to provide users the ability to monitor the people that are listening together.
• It is furthermore an object of the present invention to provide users a means of expressing their enjoyment of the music they are listening to through visual displays of wearable accessories.
• It is yet another object of the present invention to provide users a means of demonstrating their identity with other people they are listening to music with.
• It is still further an object of the present invention to provide users to provide users with means to choreograph the visual displays.
• Additional objects, advantages and novel features of this invention shall be set forth in part in the description that follows, and will become apparent to those skilled in the art upon examination of the following specification or may be learned through the practice of the invention. The objects and advantages of the invention may be realized and attained by means of the instrumentalities, combinations, and methods particularly pointed out in the appended claims.
• To achieve the foregoing and other objects and in accordance with the purposes of the present invention, as embodied and broadly described therein, the present invention is directed to a method for sharing music from stored musical signals between a first user with a first music player device and at least one second user with at least one second music player device. The method includes the step of playing the musical signals for the first user on the first music player device while essentially simultaneously wirelessly transmitting the musical signals from the first music player device to the at least one second music player device. The method additionally includes receiving the musical signals by the at least one second player device, such that the musical signals can be played on the at least one second player device essentially simultaneously with the playing of the musical signals on the first music player device. In this method, the first and the at least one second users are mobile and maintain less than a predetermined distance.
• The present invention is also related to a system of music sharing for a plurality of users. The system includes a first sharing device and at least one second sharing device, each comprising a musical signal store, a musical signal transmitter, a musical signal receiver, and a musical signal player. Furthermore, the system comprises a broadcast user operating the first sharing device and at least one member user operating the at least one second sharing device. The broadcast user plays the musical signal for his own enjoyment on the first sharing device and simultaneously transmits the musical signal to the receiver of the at least one second sharing device of the at least one member user, on which the musical signal is played for the at least one member user. The broadcast user and the at least one member user hear the musical signal substantially simultaneously.
• The present invention yet further is related to a wireless communications system for sharing audio entertainment between a first mobile device and a second mobile device in the presence of a non-participating third mobile device. The system includes an announcement signal transmitted by the first mobile device for which the second mobile device and the third mobile device are receptive. In addition, the system includes a response signal transmitted by the second mobile device in response to the announcement signal for which the first mobile device is receptive and for which the third mobile device is not receptive. Also, the system includes an identifier signal transmitted by the first mobile device to the second mobile device in response to the response signal, and which is not receptive to the third mobile device. Finally, the system includes a broadcast signal comprising audio entertainment that is transmitted by the first mobile device, and which is receptive by the second mobile device on the basis of the reception of the identifier signal.
• The present invention additionally is related to an audio entertainment device. The device includes a signal store that stores an audio entertainment signal, a transmitter that can transmit the stored audio entertainment signal, a receiver that can receive the transmitted audio entertainment signal from a transmitter of another such device, and a player that can play audio entertainment from a member selected from the group of stored audio entertainment signals or audio entertainment signals transmitted from the transmitter of another such device.
• The present invention yet still is related to a system for identifying a first device that introduces a music selection to a second device. The system includes a mobile music transmitter operated by the first device and a mobile music receiver operated by the second device. In addition, the system includes a music signal comprising the music selection transmitted by the transmitter and received by the receiver, an individual musical identifier that is associated with the music selection, and an individual transmitter identifier that identifies the transmitter. The transmitter identifier and the individual music identifier are stored in association with each other in the receiver.
• The present invention is still further related to an audio entertainment device. The device includes a wireless transmitter for the transmission of audio entertainment signals and a wireless receiver for the reception of the transmitted audio entertainment signals from a transmitter of audio entertainment signals. A first manually-separable connector for electrically connecting with an audio player allows transfer of audio entertainment signals from the player to the device. The device also includes a second connector for connecting with a speaker and a control to manually switch between at least three states. In the first state the speaker plays audio entertainment signals from the audio player and the transmitter does not transmit the audio entertainment signals. In the second state the speaker plays audio entertainment signals from the audio player and the transmitter essentially simultaneously transmits the audio entertainment signals. In the third state the speaker plays audio entertainment signals received by the receiver.
• The present invention also still is related to a system for the sharing of stored music between a first user and a second user. The system includes a first device for playing music to the first user, comprising a store of musical signals. A first controller prepares musical signals from the first store for transmission and playing, and a first player takes musical signals from the first controller and plays the signals for the first user. A transmitter is capable of taking the musical signals from the controller and transmitting the musical signals via wireless broadcast. A second device for playing music to the second user comprises a receiver receptive of the transmissions from the transmitter of the first device, a second controller that prepares musical signals from the receiver for playing, and a second player that takes musical signal from the second controller and plays the signals for the second user. The first user and the second user hear the musical signals at substantially the same time.
• The present invention also is related to an earphone for listening to audio entertainment allowing for the controlled reception of ambient sound by a user. The earphone includes a speaker that is oriented towards the user's ear and an enclosure that reduces the amount of ambient noise perceptive to the user. In addition, a manually-adjustable characteristic of the enclosure adjusts the amount of ambient sound perceptive to the user.
• The present invention is further related to a mobile device for the transmission of audio entertainment signals. The mobile device includes an audio signal store for the storage of the audio entertainment signals, and an audio signal player for the playing of the audio entertainment signals. The device also includes a wireless transmitter for the transmission of the audio entertainment signals and a transmitter control to manually switch between two states consisting of the operation and the non-operation of the audio transmitter.
• The present invention yet still is related to a mobile device for the reception of digital audio entertainment signals. The mobile device includes an audio signal store for the storage of the digital audio entertainment signals and an audio receiver for the reception of external digital audio entertainment signals from a mobile audio signal transmitter located within a predetermined distance of the audio receiver. The device also includes a receiver control with at least a first state and a second state. An audio signal player plays digital audio entertainment signals from the audio signal store when the receiver control is in the first state, and plays digital audio entertainment signals from the audio receiver when the receiver control is in the second state.
• The present invention furthermore relates to a method for the shared enjoyment of music from stored musical signals between a first user with a first music player device and at least one second user with at least one second music player device. The method includes the step of playing the musical signals for the first user on the first music player device while essentially simultaneously wirelessly transmitting synchronization signals from the first music player device to the at least one second music player device. The method also includes receiving the synchronization signals by the at least one second player device. The synchronization signals allow the musical signals on the at least one second player device to be played essentially simultaneously with the playing of the musical signals on the first music player device. The first and the at least one second users are mobile.
• The present invention yet furthermore relates to a wireless communications system for sharing audio entertainment between a first mobile device and a second mobile device. The system includes a broadcast identifier signal transmitted by the first mobile device to the second mobile device. A personal identifier signal is transmitted by the second mobile device to the first mobile device. A broadcast signal comprising audio entertainment is transmitted by the first mobile device of which the second device is receptive. The first mobile device and the second mobile device have displays which can display the identifier signal that they receive and the second mobile device can play the audio entertainment from the broadcast signal that it receives.
• The present invention also relates to a method for enhancing enjoyment of a musical selection. The method includes the steps of obtaining control signals related to the musical selection, transmitting the control signals wirelessly, receiving the control signals, and converting the control signals to a humanly-perceptible form.
• The present invention further yet relates to a method for generating and storing control signals corresponding to musical signals. The method includes the steps of playing musical signals for a user and receiving manual input signals from the user that are produced substantially in synchrony with the music. The method also includes the steps of generating control signals from the input signals, and storing the control signals so that they can be retrieved with the musical signals.
• The present invention still additionally relates to a wearable personal accessory. The accessory includes an input transducer taken from the group consisting of a microphone and an accelerometer. The transducer generates a time-varying input transduction signal. The accessory also includes a controller that accepts the input transduction signal, and generates an output transducer signal whose signal varies in amplitude with time. An output transducer receptive of the output transducer signal provides a humanly-perceptible signal. An energy source powers the input transducer, controller and output transducer.
• The present invention also still relates to a wearable personal accessory controlled via wireless communications. The accessory includes a wireless communications receiver that is receptive of an external control signal. The accessory also includes a controller that accepts the external control signal and that generates a time-varying visual output transducer signal. A visual output transducer is receptive of the output transducer signal, and provides a humanly-perceptible visual signal. An energy store powers the receiver, controller and output transducer. The visual output transducer generates visually-perceptive output.
• The present invention still further relates to a device for converting user tactile responses to stored music into a stored control signal. The device includes a player that plays stored music audible to the user and a manually-operated transducer that outputs an electrical signal. The transducer is actuated by the user in response to the music. A controller receives the electrical signal and outputs a control signal and a store receives the control signal and stores it.
• The present invention furthermore relates to a music player that wirelessly transmits control signals related to the music, wherein the control signals control a wearable electronic accessory. The music player includes a store of music signal files and a controller that reads a musical signal file from the store and generates audio signals. The controller further generates the control signals. A transducer converts the audio signals into sound audible to the user and a wireless transmitter transmits the control signal to the wearable electronic accessory.
• The present invention yet relates to a music player that wirelessly transmits control signals related to the music, wherein the control signals control a wearable electronic accessory. The music player includes a store of music signal files and a second store of control signal files associated with the music signal files. A controller reads a musical signal file from the store and generates audio signals. The controller further reads an associated control signal file. A transducer converts the audio signals into sound audible to the user, and a wireless transmitter transmits the control signals from the associated control signal file to the wearable electronic accessory.
• The present invention also relates to a system for exhibition of music enjoyment. The system includes a source of music signals, a controller that generates control signals from the music signals, and a transmitter of the control signals. The transmission of the control signals is synchronized with the playing of the music signals. In addition, the system includes a receiver of the control signals and a transducer that responds to the control signals.
• The present invention further relates to a method for transferring a wearable-accessory control file stored on a first device to a second device in which an associated music file is stored. The method includes the steps of storing on the first device the name of the music file in conjunction with the control file with which it is associated and requesting by the second device of the first device for a control file stored in conjunction with the name of the music file. In addition, the method includes the step of transferring the control file from the first device to the second device. The control file is stored on the second device in conjunction with the name of the associated music file.
• The present invention also relates to a device for transmitting control signals to a wearable accessory receptive of such control signals. The device includes a manually-separable input connector for connecting to an output port of an audio player. Audio signals are conveyed from the audio player to the device across the connector. The device also includes a controller for generating control signals from the audio signals and a transmitter for transmitting the control signals.
BRIEF DESCRIPTION OF THE DRAWINGS
• FIG. 1 is a schematic block diagram of a local audio network comprised of two linked audio units operated by two persons, and associated digital jewelry conveyed by the two persons.
• FIG. 2A is a schematic block diagram of a DJ with multiple independently controlled LED arrays.
• FIG. 2B is a schematic block diagram of a DJ with an LED array with independently controlled LEDs.
• FIGS.3A-C are schematic block diagrams of unit elements used in inter-unit communications.
• FIG. 4 is a schematic flow diagram of DJ entraining.
• FIGS.5A-B are schematic block diagrams of DJs associated with multiple people bound to the same master unit.
• FIG. 6 is a schematic block diagram of a cluster comprising a broadcast unit and multiple receive units, with an external search unit.
• FIG. 7 is a schematic diagram of a broadcast unit transmission.
• FIG. 8A is a schematic block diagram of audio units with self-broadcast so that audio output is highly synchronized.
• FIG. 8B is a schematic flow diagram for synchronous audio playing with multiple rebroadcast.
• FIGS. 9A and 9B are schematic block diagrams of hierarchically-related clusters.
• FIG. 10 is a top perspective view of an earphone with manually adjustable external sound ports.
• FIGS. 11A and B are cross-sectional diagrams of a earpiece with an extender to admit additional ambient sound.
• FIG. 12A is a schematic diagram of a modular audio unit.
• FIG. 12B is a schematic diagram of modular digital jewelry.
• FIG. 12C is a schematic block diagram of a modular transmitter that generates and transmits control signals for digital jewelry from an audio player.
• FIG. 13A is a schematic cross-section through a search unit and a broadcast unit in which communications are provided via visible or infrared LED emission in search transmission mode.
• FIG. 13B is a schematic cross-section through a search unit and a broadcast unit n which communications are provided via a visible or infrared laser in search transmission mode.
• FIG. 13C is a schematic cross-section through a search unit and a broadcast unit in which communications are provided via visible or infrared emission from a digital jewelry element in broadcast transmission mode.
• FIG. 13D is a schematic cross-section through a search unit and a broadcast unit in which communications are provided via contact in mutual transmission mode.
• FIG. 13E is a schematic cross-section through a search unit and a broadcast unit in which communications are provided via sonic transmissions in broadcast transmission mode.
• FIG. 13F is a schematic cross-section through a search unit and a broadcast unit in which communications are provided via radio frequency transmissions in broadcast transmission mode.
• FIG. 14A is a schematic block diagram of the socket configurations on the broadcast unit and the receive unit.
• FIG. 14B is a schematic block flow diagram of using IP sockets for establishing and maintaining communications between a broadcast unit and the receive unit, according to the socket diagram ofFIG. 14A.
• FIG. 15 is a schematic block diagram of the IP socket organization used with clusters comprising multiple members.
• FIG. 16 is a schematic block flow diagram of transfer of control between the broadcast unit and the first receive unit.
• FIG. 17 is a matrix of DJ and searcher preferences and characteristics, illustrating the matching of DJ and searcher in admitting a search to a cluster.
• FIG. 18A is a screenshot of an LCD display of a unit, taken during normal operation.
• FIG. 18B is a screenshot of an LCD display of a unit, taken during voting for a new member.
• FIG. 19 is a table of voting schemes for the acceptance of new members into a cluster.
• FIG. 20 is a time-amplitude trace of an audio signal automatically separated into beats.
• FIG. 21A is a block flow diagram of a neural network method of creating DJ transducer control signals from an audio signal as shown inFIG. 20.
• FIG. 21B is a block flow diagram of a deterministic signal analysis method of creating DJ transducer control signals from an audio signal as shown inFIG. 20.
• FIG. 21C is a schematic flow diagram of a method to extract fundamental musical patterns from an audio signal to create DJ control signals.
• FIG. 21D is a schematic flow diagram of an algorithm to identify a music model resulting in a time signature.
• FIG. 22A is a top-view diagram of an audio unit user interface, demonstrating the use of buttons to create DJ control signals.
• FIG. 22B is a top-view diagram of a hand-pad for creating DJ control signals.
• FIG. 22C is a schematic block diagram of a set of drums used for creating DJ control signals.
• FIG. 23A is a schematic block flow diagram of the synchronized playback of an audio signal file with a DJ control signal file, using transmission of both audio and control signal information.
• FIG. 24 is a schematic block diagram of a DJ unit with associated input transducers.
• FIG. 25 is a schematic flow diagram indicating music sharing using audio devices, providing new means of distributing music to customers.
• FIG. 26 is a schematic diagram of people at a concert, in which DJs conveyed by multiple individuals are commonly controlled.
• FIG. 27 is a schematic block flow diagram of using a prospective new member's previous associations to determine whether the person should be added to an existing cluster.
• FIG. 28 is a block flow diagram indicating the steps used to maintain physical proximity between the broadcast unit and the receive unit via feedback to the receive unit user.
• FIGS. 29A is a schematic block diagram of the connection of an Internet-enabled audio unit with an Internet device through the Internet cloud, using an Internet access point.
• FIGS. 29B is a schematic block diagram of the connection of an Internet-enabled audio unit with an Internet device through the Internet cloud, with an audio unit directly connected to the Internet cloud.
• FIG. 30 comprises tables of ratings of audio unit users.
• FIG. 31 is tables of DJ, song and transaction information according to the methods ofFIG. 25.
• FIG. 32A is a schematic block diagram of maintaining privacy in open transmission communications.
• FIG. 32B is a schematic block diagram of maintaining privacy in closed transmission communication.
• FIG. 33 is a schematic block diagram of a hierarchical cluster, as inFIG. 9A, in which communications between different units is cryptographically or otherwise restricted to a subset of the cluster members.
• FIG. 34A is a schematic block flow diagram of the synchronization of music playing from music files present on theunits100.
• FIG. 34B is a schematic layout of a synchronization record according toFIG. 34A.
• FIG. 35 is a schematic block diagram of DJ switch control for both entraining and wide-area broadcast.
• FIG. 36 is a schematic block diagram of mode switching between peer-to-peer and infrastructure modes.
BEST MODE FOR CARRYING-OUT THE INVENTIONOverview
• FIG. 1 is a schematic block diagram of a local audio network comprised of two linkedaudio units100 operated by two persons, and associateddigital jewelry200 conveyed by the two persons. The persons are designated Person A and Person B, theiraudio units100 are respectively Unit A and Unit B, and theirdigital jewelry200 are denoted respectively DJ A and DJ B. In this patent specification, “DJ” is used to denote either the singular “digital jewel” or the plural “digital jewelry”.
• Eachunit100 is comprised of anaudio player130, and an inter-unit transmitter/receiver110. In addition, eachunit100 comprises a means of communication with the digital jewelry, which can be either a separate DJ transmitter120 (Unit A), or which can be part of the inter-unit transmitter/receiver110 (Unit B). Furthermore,unit100 can optionally comprise a DJdirectional identifier122, whose operation will be described below. Also,unit100 will generally comprise aunit controller101, which performs various operational and executive functions of intra-unit coordination, computation, and data transfers. The many functions of thecontroller101 will not be discussed separately below, but will be described with respect to the general functioning of theunit100.
• In operation, UnitA audio player130 is playing recorded music under the control of a person to be designated User A. This music can derive from a variety of different sources and storage types, including tape cassettes, CDs, DVDs, magneto-optical disks, flash memory, removable disks, hard-disk drives or other hard storage media. Alternatively, the audio signals can be received from broadcasts using analog (e.g. AM or FM) or digital radio receivers. Unit A is additionally broadcasting a signal throughDJ transmitter120, which is received byDJ200 through aDJ receiver220 that is worn or otherwise conveyed by User A.
• It should be noted that the audio signals can be of any sound type, and can include spoken text, symphonic music, popular music or other art forms. In this specification, the terms audio signal and music will be used interchangeably.
• TheDJ200 transduces the signal received by theDJ receiver220 to a form perceptible to the User A or other people near to him. This transduced form can include audio, visual or tactile elements, which are converted to their perceptible forms via alight transducer240, and optionally atactile transducer250 or anaudio transducer260. Thetransducers240,250 and260 can either directly generate the perceptible forms directly from the signals received by theDJ receiver220, or can alternatively incorporate elements to filter or modify the signals prior to their use by the transducers.
• When a second individual, User B, perceives the transduced forms produced byUser A DJ200, he can then share the audio signal generated by theaudio player130 of Unit A, by use of the inter-unit transmitter/receiver110 of Unit A and acompatible receiver110 of Unit B. Audio signals received by Unit B from Unit A are played using the UnitB audio player130, so that User A and User B hear the audio signals roughly simultaneously. There are a variety of means by which the Unit B can select the signal of Unit A, but a preferred method is for there to be a DJdirectional identifier122 in Unit B, which can be pointed at the DJ of User A and which receives information needed to select the Unit A signal from the User A DJ, whose transduced signal is perceptible to User B.
• Given the audio signal now being exchanged between Unit A and Unit B, User A and User B can experience the same audio signal roughly simultaneously. Within the spirit of the present invention, it is preferable for the two users to hear the audio signals within 1 second of one another, and more preferable for the users to hear the audio signals within 200 milliseconds of one another, and most preferable for the users to hear the audio signals within 50 milliseconds of one another. Furthermore,DJs200 being worn by User A and User B can receive signals from their respective units, each emitting perceptible forms of their signals. Preferably, the transduced forms expressed by theDJs200 are such as to enhance the personal or social experience of the audio being played.
Unit100 Structure
• Units100 comprise a device, preferably of a size and weight that is suited for personal wearing or transport, which is preferably of a size and format similar to that of a conventional portable MP3 player. The unit can be designed on a “base” of consumer electronics products such as cell phones, portable MP3 players, or personal digital assistants (PDAs), and indeed can be configured as an add-on module to any of these devices.
• In general, theunit100 will comprise, in addition to those elements described inFIG. 1, other elements such as a user interface (e.g. an LCD or OLED screen, which can be combined with a touch-sensitive screen, keypad and/or keyboard), communications interfaces (e.g. Firewire, USB, or other serial communications ports), permanent or removable digital storage, and other components.
• Theaudio player130 can comprise one or more modes of audio storage, which can include CDs, tape, DVDs, removable or fixed magnetic drives, flash memory, or other means. Alternatively, the audio can be configured for wireless transmission, including AM/FM radio, digital radio, or other such means. Output of the audio signal so generated can comprise wireless or wired headphones or wired or wireless external speakers.
• It is also within the spirit of the present invention that theunit100 can have only receive capabilities, without having separate audio information storage or broadcast capabilities. In concept, such a device can have as little user interface as an on/off button, a button to cause theunit100 to receive signals from a new “host”, and a volume control. Such devices can be very small and be built very inexpensively.
• Unit100 Audio Output
• One of the goals of the present invention is to assist communications between groups of people. In general, with mobile audio devices, the music is listened to through headphones. Many headphones are designed so as to reduce to the extent possible the amount of sound which is heard from outside of the headphones. This, however, will have the general effect of reducing the verbal communications between individuals.
• In order to avoid this potential problem, it is within the teachings of the present invention that headphones or earphones be provided that allow ambient sound, including a friend's voice, to be easily perceptible to the wearer of the headphones, and that such headphones can be provided that variably allow such sound to be accessible for the headphone's wearer. Such arrangement of the headphones can be obtained either through physical or electronic means. If through electronic means, the headphones can have a microphone associated with them, through which signals received are played back in proportion through the headphone speakers, said proportion being adjustable from substantially all sound being from the microphone to substantially no sound being from the microphone. This microphone can also be a part of a noise cancellation system, such that the phase of the playback is adjustable—if the phase is inverted relative to the ambient sound signal, then the external noise is reduced, whereas if the phase is coincident with the ambient sound signal, then the ambient sounds are enhanced.
• FIG. 10 is a top perspective view of anearphone900 with adjustable external sound ports. Aspeaker element940 is centrally located, and the outside circumferential surface is arotatable sound shield910 in which soundports930 are placed. Thesound ports930 are open holes to admit sound. Beneath thesound shield930 is a non-rotatable sound shield in which fixedsound ports920 are placed in a similar arrangement. As thesound shield910 is rotated manually by the user, thesound ports930 and the fixedsound ports920 come into registration, so that open ports between sources of ambient noise and the outer ear chamber is created, increasing the amount of ambient sound that the user perceives.
• FIGS. 11A and B are cross-sectional diagrams of an earpiece with anextender980 that admits additional ambient sound. InFIG. 11A, the face of aspeaker960 with acord970 is covered with aporous foam block950 that fits snugly into the ear. While some ambient sound is accessible to the ear through thefoam block950, the majority of the sound is input is impeded. InFIG. 11B, thefoam extender980 is placed over thefoam block950 so that a formed shape at the distal end of theextender980 fits snugly into the ear. Ahollow cavity982 can be allowed in theextender980 so as to reduce the sound impedance from thespeaker960 to the ear. Ambient sound is allowed into the space between thespeaker960 and the distal end of the extender980 (shown by the arrows).
• Many other arrangements are allowed within the spirit of the present invention to allow ambient sound to more easily access the user's ear, including adjustable headphones or earplugs as inFIG. 10, or accessories that can modify the structure of existing earphones and headphones, as inFIG. 11B. Such effects can include increasing the number of apertures admitting ambient sound, increasing the size of an aperture (e.g. by adjusting the overlap between two larger apertures), changing the thickness or number of layers in the enclosure, or by placing a manually detachable cup that covers the earphone and ear channel so as to reduce ambient sound.
DJ200 Transducers
• DJs200 will have a number of common elements, including communications elements, energy storage elements, and control elements (e.g. a manual ON/OFF switch or a switch to signal DJ entraining, as will be described below). In this section, the structure and function of transducers will be described.
• Light Transducers240
• TheDJ200 transducers are used to create perceptible forms of the signals received by thereceiver220. Light transduction can include the use of one or more light-emitting devices, which can conveniently be colored LEDs, OLEDs, LCDs, or electroluminescent displays, which can be supplemented with optical elements, including mirrors, lenses, gratings, and optical fibers. Additionally, motors, electrostatic elements or other mechanical actuators can be used to mechanically alter the directionality or other properties of thelight transducers240. There can be either a single device or an array of devices, and if more than a single device, can display in synchrony, or can be “choreographed” to display in a temporal and/or spatial pattern.
• FIG. 2A is a schematic block diagram of aDJ200 with multiple independently controlled LED arrays, wherein the number of LED arrays is preferably between 2 and 8, and is even more preferably between 2 and 4. The signal received fromunit100 via theDJ receiver220 is passed to amulti-port controller242 with twoports294 and296 connected respectively with twoseparate arrays290 and292 ofLEDs246. Thesearrays290 and292 can be distinguished by spatial placement, color of emitted light, or the temporal pattern of LED illumination. The signal is converted via analog or digital conversion into control signals for the twoarrays290 and292, which are illuminated in distinct temporal patterns.
• It should be noted that the signal received byreceiver220 from theunit100 can comprise either a signal already in the form required to specify the array and temporal pattern ofLED246 activity, or it can alternatively be converted from a differently formatted signal into temporal pattern signals. For example, theunit100 can transmit a modulated signal whose amplitude specifies the intensity of LED light amplitude. For multiple LED arrays, signals for the different arrays can be sent together and decoded by theDJ receiver220, such as through using time multiplexing, or transmission on different frequencies.
• Alternatively, the signal could be not directly related to the transduction intensity, such as in the direct transmission of the audio signal being played by theunit100. In such case, thecontroller242 can modify the signal so as to generate appropriate light transduction signals. For example, low frequency bandpass filters could provide the signals for thefirst array290, whereas high-frequency bandpass filters could provide the signals for thesecond array292. Such filtering could be accomplished by either analog circuitry or digital software within a microprocessor in thecontroller242. It is also within the spirit of the present invention for the different arrays to respond differently to the amplitude of the signal within a frequency band or the total signal.
• An alternative control of LED arrays is presented inFIG. 2B, a schematic block diagram of aDJ200 with an LED array with independently controlled LEDs. In this case, the control signal received by thereceiver200 is passed through a single-port,multiple ID controller243 to a single array of LEDs, each responsive only to signals with a particular characteristic or identifier. One or more of theLEDs246 can have the same identifier or be responsive to the same characteristic so as to constitute a virtual array of LEDs.
• As mentioned above, the transduced light signal can alternatively or additionally comprise multi-element arrays, such as an LED screen. In such case, the signal received by thereceiver220 can be either a specification of image elements to be displayed on the LED screen, or can be as before, a signal unrelated to the light transduction output. For example, many audio players on computers (e.g. Windows Media player) come with pattern generators that are responsive to the frequency and amplitude of the audio signal. Such pattern generators could be incorporated into thecontrollers242 or243.
• Alternatively, thelight transducer240 can be a single color illuminated panel, whose temporal pattern of illumination was similar to that of the LEDs ofFIGS. 2A and 2B. In such case, users can partially cover the panel with opaque or translucent patterns, such as a dog or a skull or a representation of a favorite entertainer.
• Whereas thereceiver220 and thelight controllers242 or243 can be hidden from view, either behind the light transducers or separated from the transducers by a wire, for example, the light transducers are meant to be perceptible to other people. For this purpose, the light transducers can be fashioned into fashion accoutrements such as bracelets, brooches, necklaces, pendants, earrings, rings, hair clips (e.g. barrettes), ornamental pins, netting to be worn over clothing, belts, belt buckles, straps, watches, masks, or other objects. Additionally, the light transducers can be fashioned into clothing, such as arrays of lighting elements sewn onto the outside of articles of clothing such as backpacks, wallets, purses, hats, or shoes. For those articles of clothing that are normally washed, however, the lighting transducers and associated electronics will preferably be able to withstand cleaning agents (e.g. water or dry cleaning chemicals), or will be used in clothing such as scarves and hats that do not need to be washable.
• It is also convenient for there to be modular lighting arrangements in which the configuration can easily changed by a user. One example of such a modular arrangement is a light pipe made of a flexible plastic cable or rod, at one or both ends of which is positioned a light source that directs light into the rod. At predetermined locations along the rod, the rod surface can be roughened so as to allow a certain amount of light to escape, on which transparent glass or plastic pieces can be clipped, and that are lighted when the pipe is lighted. Alternatively, the light can be uniformly smooth, and transparent pieces of roughly index of refraction matching material can be clipped onto the rod, allowing some fraction of the light to be diverted from the rod into the pieces. The light sources and associated energy sources used in such an arrangement can be relatively bulky and be carried in a backpack, pouch or other carrying case, and can brightly illuminate a number of separate items.
• It should be noted that the transducers require anenergy store270, which is conveniently in the form of a battery. The size of the battery will be highly dependent on the transduction requirements, but can conveniently be a small “watch battery”. It is also convenient for theenergy store270 to be rechargeable. Indeed, all of the electric devices of the present invention will need energy stores or generators of some sort, which can comprise non-rechargeable batteries, rechargeable batteries, motion generators that can convert energy from the motion of the user into electrical energy that can be used or stored, fuel cells or other such energy stores or converters as are convenient.
• Sound Transducers260
• Sound transducers260 can supplement or be the primary output of the audio player of theunit100. For example, theunit100 can wirelessly transmit the audio signal toDJ200 comprising a wireless headphone sound transducer. This would allow a user to listen to the audio from the audio player without the need for wires connecting the headphones to theunit100. Such sound transducers can comprise, for example, electromagnetic or piezoelectric elements.
• Alternative to headphone or earphone audio production, external speakers, which can be associated withlight transducers240 ortactile transducers250, can be used to enhance audio reproduction from external speakers associated with theunit100. In addition or alternative to simple reproduction of the audio signal output by theaudio player130, thesound transducers260 can play modified or accompanying signals. For example, frequency filters can be used to select various frequency elements from the music (for low bass), so as to emphasize certain aspects of the music. Alternatively, musical elements not directly output from theaudio player130 can be output to complete all instrumental channels of a piece of music, for example.
• Tactile Transducers250
• DJs200 can be configured with tactile transducers, which can provide vibrational, rubbing, or pressure sensation. As before, signals of a format that control these transducers can be sent directly from theDJ transmitter120, or can be filtered, modified or generated from signals of an unrelated format that are sent from thetransmitter120. As before, the signal can be the audio signal from theaudio player130, which can, for example, be frequency filtered and possibly frequency converted so that the frequency of tactile stimulation is compatible with the tactile transducer. Alternatively, signals that are of the sort meant for light transduction can be modified so as to be appropriate for tactile transduction. For example, signals for light of a particular color can be used to provide vibrational transduction of a particular frequency, or light amplitudes can be converted into pressure values.
• The tactile transducer can comprise a pressure cuff encircling a finger, wrist, ankle, arm, leg, throat, forehead, torso, or other body part. The tactile transducer can alternatively comprise a rubbing device, with an actuator that propels a tactile element tangentially across the skin. The tactile transducer can also alternatively comprise a vibrational device, with an actuator that drives an element normally to the skin. The tactile transducer can further alternatively comprise elements that are held fixed in relation to the skin, and which comprise moving internal elements that cause the skin to vibrate or flex in response to the movement of the internal element.
• The tactile transducer can lack any moveable element, and can confer tactile sensation through direct electrical stimulation. Such tactile elements are best used where skin conductivity is high, which can include areas with mucus membranes.
• Tactile transduction can take place on any part of the body surface with tactile sensation. In addition, tactile transduction elements can be held against the skin overlying bony structures (skull, backbone, hips, knees, wrists), or swallowed and conveyed through the digestive tract, where they can be perceived by the user.
• Input Transducers
• It should also be understood that theDJ200 can comprise input transducers in order to create control signals from information or stimuli in the local environment.FIG. 24 is a schematic block diagram of aDJ unit200 with associated input transducers. The input-enabledDJ1320 comprisesenergy storage270, acontroller1322,output transducers1324, aDJ receiver220 andinput transducers1326. Theinput transducers1326 can comprise one or more of amicrophone1328 and anaccelerometer1330.
• In operation, theenergy storage270 provides energy for all other functions in theDJ1320. Thecontroller1322 provides control signals for theoutput transducers1324, which can comprisetactile transducers250,sound transducers260, and/orlight transducers240. Input to the controller can be provided via theinput transducers1326, optionally along with input from theDJ receiver220.
• For example, on a dance floor, themicrophone1328 can provide electrical signals corresponding to the ambient music. These signals can be converted intotransducer1324 control signals in a manner similar to that described below for the automatic generation of control signals according to FIGS.21 A-C, as will be described below. This allows the use of the DJ functionality in the absence of an accompanyingaudio unit100, expanding the applications of theDJ200. An automatic gain filter can be applied so as to compensate for the average volume level—because the user can be close or far from the sources of ambient music and the music can vary in volume, the strength of theDJ200 transduction can be normalized. In addition, it can also be preferable for there to be amanual amplitude control1323, such as a dial or two position rocker switch, by which the average intensity of theDJ200 control signals can be varied to suit the taste of the user. Theamplitude control1323 can operate through modulating theinput transducer1326 output or as an input to thecontroller1322 as it generates the signals for theoutput transducers1324.
• Alternatively, theaccelerometer1330 can track the movement of the person wearing theDJ100, such that a signal indicating acceleration in one direction can be converted by thecontroller1322 into signals for a channel ofoutput transducers1324. Theaccelerometer1330 can be outfitted with sensors for monitoring only a single axis of motion, or alternatively for up to three independent directions of acceleration. Thus, thecontroller1322 can convert sensed acceleration in each direction into a separate channel, horizontal axes of acceleration could be combined into a single channel and the vertical axis into a second channel, or other such linear or non-linear combination of sensed acceleration can be combined in aesthetic fashion.
• It is also within the spirit of the present invention that multiple input signals be combined by thecontroller1322 to create control signals for aesthetic output from theoutput transducers1324. For example, one channel can be reserved for control signals generated from accelerometer signals, another channel for control signals generated from microphone signals, and yet a third channel from control signals generated fromDJ receiver220 input. In general, the information from theDJ receiver220 and from themicrophone1328 will be of the same type (i.e. generated from audio signals), so that the most common configurations will be control signals from a combination of themicrophone1328 andaccelerometer1330, and signals from a combination of theDJ receiver220 and theaccelerometer1330.
• Theinput transducers1326 can further comprise a light sensor, such that the DJ would mimic light displays in its environment, making it appear that the DJ is part of the activity that surrounds it. In this case, thecontroller1322 would preferably generate control signals based on rapid changes in the ambient lighting, since it would be less aesthetic to have the DJ transducers provide constant illumination. Furthermore, slowly changing light (on the order of tens or hundreds of milliseconds) will be created naturally by the movement of the user, whereas changes in the lighting (e.g. strobes, laser lights, disco balls) will be of much faster change (on the order of milliseconds). Thus, to match the ambient dance lighting, it is aesthetic for theDJ200 to respond most actively to ambient light that is changing in intensity a predetermined percentage in a predetermined time, wherein the predetermined percentage is at least 20% and the predetermined time is 20 milliseconds or less, and even more preferably for the predetermined percentage to be at least 40% and the predetermined time is 5 milliseconds or less.
Unit to Unit Communication
• Units100 transfer audio signals from the audio player in oneunit100 to theaudio player130 of anotherunit100. FIGS.3A-C are schematic block diagrams ofunit100 elements used in inter-unit communications. Each diagram presents communications between a Unit A and a Unit B, with Unit A transmitting audio signals to Unit B. Dashed connectors and elements indicate elements or transfers that are not being utilized in thatunit100, but are placed to indicate the equivalence of the transmitting and receivingunits100.
• InFIG. 3A, compressed audio signals (e.g. in MP3 format or MPEG4 format for video transfers, as described below) stored in acompressed audio storage310 are transferred to asignal decompressor302, where the compressed audio signal is converted into an uncompressed form suitable for audio output. In Unit A, this decompressed signal is passed both to thelocal speaker300, as well as to the inter-unit transmitter/receiver110. The Unit B inter-unit transmitter-receiver110 receives the uncompressed audio signal, which is sent to its local speaker for output. Thus, both Unit A and Unit B play the same audio from the Unit A storage, in which uncompressed audio is transferred between the twounits100.
• InFIG. 3B, compressed audio signals from the Unit A compressedaudio storage310 are sent both to thelocal signal decompressor302 and to the inter-unit transmitter/receiver110. TheUnit A decompressor302 conditions the audio signal so that it is suitable for output through theUnit A speaker300. The compressed audio signal is sent via Unit A transmitter-receiver110 to the Unit B transmitter/receiver110, where it is passed to theUnit B decompressor302 and thence to theUnit B speaker300. In this embodiment, because compressed audio signals are transmitted between theunits100 transmitter/receivers302, lower bandwidth communications means can be used in comparison with the embodiment ofFIG. 3A.
• InFIG. 3C, compressed audio signals from the Unit A compressedaudio storage310 are sent to the UnitA signal decompressor302. These decompressed signals are sent to both thelocal speaker300 as well as to alocal compressor330, which recompresses the audio signal to a custom format. In addition to decompressed audio signal input, the compressor also optionally utilizes information from aDJ signal generator320, which generates signals to controlDJ transducers240,250 and260, which can be sent in conjunction with the audio signal. Thesignal generator320 can include analog and/or digital filtering or other algorithms that analyze or modify the audio signals, or can alternatively take manually input transducer control signals input as described below. The custom compression can include multiplexing of the audio signals with the transducer control signals.
• The custom compressed audio signals, are then passed to the Unit A inter-unit transmitter/receiver110, which are then transferred to the Unit B inter-unit transmitter/receiver110, and thence to the UnitB signal decompressor302 andspeaker300.
• Given the time delays in signal transfer between theunits100, custom compression that takes place in the sending unit, and any subsequent decompression that takes place in the receivingunit100, it can be convenient to place a delay on the local (i.e. Unit A) speaker output of tens of milliseconds, so that bothunits100 play the audio through their speakers at roughly the same time. This delay can include limited local digital storage between the local signal decompression andspeaker300 output.
• Various hardware communications protocols will be discussed below with respect to unit-to-unit communications, but in general it is required that the distance between the units that must be maintained be preferably at least 40 feet, and more preferably at least 100 feet, and most preferably 500 feet, in order to allowunits100 sharing music to be able to move reasonably with respect to one another (e.g. for a user to go to the bathroom without losing contact), or to find each other in a large venue such as a shopping mall.
• Communications Protocols
• Communication between the inter-unit transmitter/receivers110 can involve a variety of protocols within the teachings of the present invention, and can include IP protocol-based transmissions mediated by such physical link layers as 802.11a, b or g, WDCT, HiperLAN, ultra-wideband, 2.5 or 3G wireless telephony communications, custom digital protocols such as Bluetooth or Millennial Net i-Beans. Indeed, it is not even necessary for the transmissions to be based on Internet protocol, and conventional analog radio-frequency or non-IP infrared transmissions are also within the spirit of the present invention. Eachunit100 will generally have both transmission and reception capabilities, though it is possible for a unit to have only reception capabilities. While the bandwidth of the broadcast is dependent on the compression of the audio signal, it is preferable for the transmission bandwidth to be larger than 100 kb/sec, and even more preferable for the transmission bandwidth to be greater than 250 kb/sec.
• While the distance of transmission/reception is not bounded within the teachings of the present invention, it will generally be less than a few hundred meters, and often less than 50 meters. The distance of communication is limited in general by the amount of power required to support the transmission, the size of antennae supported by portable devices, and the amount of power allowed by national regulators of broadcast frequencies. Preferably, however, the range of transmission will be at least 10 meters, and even more preferably at least 30 meters, in order to allow people sharing communications to move some distance from one another without communications being lost.
• Theunit100 is characterized generally by four sets of roughly independent characteristics: playing audio or not playing audio, transmitting or not transmitting, receiving or not receiving, searching or not searching.
• Units100 will often function in conditions with large numbers ofother units100 within the communications range. For example, in a subway car, a classroom, bicycling, or at a party, aunit100 can potentially be within range of dozens of other units. Aunit100 that is playing audio from local compressedaudio storage310 can, at the user's prerogative, choose to broadcast this audio toother units100. Aunit100 that is currently “listening” to a broadcast or is searching for a broadcast to “listen” to will require a specific identifier roughly unique to a broadcaster in order to select that broadcaster signal from among the other possible broadcasters. Some of the communications protocols listed above, such as those based on IP protocols, 2.5G or 3G wireless, or Bluetooth communications, have such identifiers as part of the protocols. Custom radio frequency based protocols will require protocols to allow signals to be tagged with specific identifiers.
• Aunit100 that is transmitting signals can, within the spirit of the present invention, be prevented from simultaneously receiving signals. Preferably, however,units100 can both transmit and receive simultaneously. One example of the use of simultaneous transmission and reception is for aunit100 that is receiving a signal to send a signal indicating its reception to the transmittingunit100. This allows the transmitting unit to determine the number ofunits100 that are currently receiving its broadcast. In return, this information could be sent, along with the audio signal, so that all of the users withunits100 receiving the broadcast can know the size of the current reception group. Alternatively, a user with aunit100 that is currently broadcasting can be searching for other broadcasting units, so that the user can decide whether to continue broadcasting or whether to listen to the broadcast of another unit.
Unit to DJ Communication
• Communication between theunit100 and theDJ200 can be either through the inter-unit transmitter/receiver110, or through a separate system. In general, the requirement of theDJ200 is for reception only, although it is permissible for theDJ200 to include transmission capabilities (e.g. to indicate to theunit100 when theDJ200energy storage270 is near depletion).
• The signals for which theDJ200 is receptive is dependent on how the transduction control signals are generated. For example, for acontroller242 that incorporates a filter or modifier that takes the audio signal as its input, theDJ receiver220 would receive all or a large fraction of the audio signal. In this case, the communication between theunit100 and theDJ200 would require a bandwidth comparable to that of inter-unit communication, as described above.
• However, if the signals are either generated in theunit100, or pre-stored along with the stored compressed audio signal, then the communications bandwidth can be quite modest. Consider aDJ200 with 2arrays290 and292 ofLEDs246, which flash with a frequency of no more than 10 Hertz, and that the LEDs are in either an ON or an OFF state, without intermediate amplitudes. In such case, the maximum bandwidth required would be only 20 bits/second, in addition to the DJ control signals.
• The range of unit to DJ communications need not be far. In general, theunit100 and theDJ200 will be carried by the same user, so communications ranges of 10 feet can be adequate for many applications. Some applications (see below) can require, however, somewhat larger ranges. On the other hand, longer communications ranges will tend to confer the possibility of overlap and interference between twodifferent units100 to theirrespective DJs200. In general, for the application of unit to DJ communications, it is preferable for the minimum range of communications to be at least 1 foot, and more preferably for the minimum range of communications to be at least 10 feet, and most preferably for the minimum range of communications to be at least 20 feet. Also, for the application of unit to DJ communications, it is preferable for the maximum range of communications to be no more than 500 feet, and more preferably for the maximum range of communications to be no more than 100 feet, and most preferably for the maximum range of communications to be no more than 40 feet. It should be noted that these communications ranges refer primarily to the transmission distance of theunits100, especially with regard to the maximum transmission distance.
• Because there can bemultiple unit100/DJ200 ensembles within a relatively short distance, communications between aunit100 and aDJ200 preferably comprise both a control signal as well as a unit identification signal, so that eachDJ200 receives its control signals from thecorrect unit100. Because theunit100 and theDJ200 will not, in general, be purchased together, or that a user can buy anew unit100 to be compatible with already ownedDJs200, it is highly useful to have a means of “entraining” aDJ200 to aparticular unit100, called its “master unit”, and aDJ200 entrained to a master unit is “bound” to that unit.
• FIG. 4 is a schematic flow diagram of DJ entraining. To entrain aDJ200, the DJ is set into entraining mode, preferably by a physical switch on theDJ200. Themaster unit100 to which theDJ200 is to be entrained is then placed within communications range, and theunit100 transmits through theDJ transmitter120 an entraining signal that includes themaster unit100 identifier. Even should there beother units100 transmitting in the vicinity, it is unlikely that they would be transmitting the entraining signal, so that entraining can often take place in a location with otheractive units100. Verification that the entraining took place can involve a characteristic sequence of light output (for light transduction), audio output (for sound transduction) or motion (for tactile transduction). After verification, theDJ100 is reset to its normal mode of operation, and will respond only to control signals accompanied by the identifier of itsmaster unit200.
• It should be noted that there can be multiple DJ's200 bound to thesame master unit100. Thus, a single person can have multiplelight transducing DJs200, orDJs200 of various modes (light, sound, tactile) transduction.
• WhileDJs200 will generally be bound to a master unit associated with the same person, this is not a requirement of the present invention. FIGS.5A-B are schematic block diagrams ofDJs200 associated with multiple people bound to the same master unit. InFIG. 5A,DJ A200 andDJ B200 are both bound to thesame DJ transmitter120, even thoughDJ A200 andDJ B200 are carried by different persons. This is particularly useful if the control signals are choreographed manually or through custom means by one person, so that multiple people can then share the same control signals. Such a means of synchronization is less necessary if theDJ200 control signals are transmitted betweenunits100 through the inter-unit transmitter/receiver110 along with the audio signals. Furthermore, in this case, it is better for the range of unit-to-DJ communication to be in the range of the inter-unit communication described above.
• In the case ofsound transducers260, theDJ B200 can comprise a wireless audio earpiece, allowing users to share music, played on asingle unit100, privately. ConsiderFIG. 5A, configured with sound transducers260 (see, for example,FIG. 1) inDJ A200 andDJ B200. Signals from theaudio player130 are transmitted by theDJ transmitter120, where they are received byDJs200—DJ A and DJ B—that are carried by Person A and Person B, respectively. In this case, both persons can listen to the same music.
• FIG. 5B shows the operation of a wide-area broadcast unit360, which is used primarily to synchronize control of a large number ofDJs200, such as might happen at a concert, party or rave. In this case, theaudio player130 is used to play audio to a large audience, many of whom are wearingDJs200. In order to synchronize the DJ output, a relatively high-power broadcast transmitter125 broadcasts control signals to a number ofdifferent DJs200 carried by Person A, Person B and other undesignated persons. The entraining signal can be automatically sent on a regular basis (e.g. whenever music is not being played, such as between songs, or interspersed within compressed or decompressed songs) so that patrons or partygoers could entrain theirDJs200 to thebroadcast unit360. Thebroadcast unit360 can also transmit inter-unit audio signals, or can only play the audio through some public output speaker that both Person A and Person B can enjoy.
• FIG. 26 is a schematic diagram of people at a concert, in whichDJs200 conveyed by multiple individuals are commonly controlled. At aconcert venue1370, music is produced on astage1372, andconcert patrons1376 are located on the floor of the venue. Many of the patrons haveDJs200 which are receptive to signals generated by abroadcast DJ controller1374. The broadcast DJ controller creates signals as described below, in which the music is automatically converted into beats, where microphones are used to pick up percussive instruments, and/or where individuals use a hand-pad to tap out control signals. These control signals are either broadcast directly from the area of thebroadcast DJ controller1374, or alternatively are broadcast from a plurality oftransmitters1380 placed around thevenue1370, and which are connected bywires1378 to the controller1374 (although the connection can also be wireless within the spirit of the present invention). It should be understood that the protocol for transmitting DJ control signals can be limited either by hardware requirements or by regulatory standards to a certain distance of reception. Thus, to cover a sufficiently large venue, multiple transmitters can be necessary to provide complete coverage over thevenue1370. In general, it is preferable for the maximum transmission distance of transmission from the transmitters to be at least 100 feet, and more preferably at least 200 feet, and most preferably at least 500 feet, so as to be able to cover areasonable venue1370 size without needing toomany transmitters1380.
• An alternative embodiment ofunit100 toDJ200 communications is the use of radio frequency transmitters and receivers, such as those used in model airplane control, which comprise multi-channel FM or AM transmitters and receivers. These components can be very small (e.g. the RX72 receivers from Sky Hooks and Riggings, Oakville, Ontario, Canada), and are defined by the crystal oscillators that determine the frequency of RF communications. Each channel can serve for a separate channel of DJ control signals. In such cases, an individual can place a specific crystal in theiraudio unit100, and entraining theDJ200 is then carried out through the use of the same crystal in theDJ200. Because of the large number of crystals that are available (e.g. comprising approximately 50 channels in the model aircraft FM control band), interference with otheraudio units100 can be minimized. Furthermore, control ofmany DJs200 within a venue, as described above, can take place by simultaneously transmitting over a large number of frequencies.
• As described above, the wide-area broadcast transmitter125 can transmit entriaing signals to which theDJs200 can be set to respond. However, there are a number of other preferred means by whichDJs200 can be used to respond to control signals to which they have not been entrained. For example, theDJs200 can be set to respond to controls signals to which they have not been entrained should there be no entrained control signals present (e.g. thecorresponding unit100 is not turned on).
• FIG. 35 is a schematic block diagram ofDJ200 switch control for both entraining and wide-area broadcast. TheDJ200 comprises a three-way switch1920. In afirst state1922, theDJ200 is entrained to the current control signal as described above. Thereafter, in asecond state1924, theDJ200 responds to control signals corresponding to the entraining signal encountered in thestep1922. In athird state1926, theDJ200 responds to any control signal for which its receiver is receptive, and can therefore respond to a wide-area broadcast, thereby providing the user with manual control over the operational state of theDJ200. It should be noted that theswitch1920 can be any physical switch with at least three discreet positions, or can alternatively be any manual mechanism by which the user can specify at least three states, including a button presses that have a visible user interface or a voice menu.
• FIG. 12B is a schematic drawing of modulardigital jewelry201. Themodular jewelry201 is comprised of two components: anelectronics module1934 and adisplay module1932. Thesemodules1934 and1932 can be electrically joined or separated through anelectronics module connector1936 and adisplay module connector1938. The value of the modular arrangement is that theelectronics module1934 comprises, in general, relatively expensive components, whose combined price can be many-fold that of thedisplay module1932. Thus, if a user wants to change the appearance of thejewelry201 without having to incur the cost of additional electronics components such as theenergy storage270,receiver220 orcontroller1322, they can simply replace thedisplay module1932 with its arrangement ofoutput transducers1324 with analternative display module1933 with a different arrangement ofoutput transducers1325.
• The transmitter forDJ200 control signals has been previously discussed primarily in terms of its incorporation within aunit100. It should be understood, however, that the transmitter can be used in conjunction with a standard audio player unrelated to unit-to-unit communications.FIG. 12C is a schematic block diagram of a modulardigital jewelry transmitter143 that generates and transmits control signals from anaudio player131. Themodular transmitter143 is connected to theaudio player131 viaaudio output port136 through thecable134 to theaudio input port138 of themodular transmitter143. Themodular transmitter143 comprises the theDJ transmitter120, which can send unit-to-DJ communications. Theoutput audio port142 is connected to theearphone901 viacable146. Theearphone901 can also be a wireless earphone, perhaps connected via theDJ transmitter120.
• The audio output from theplayer131 is split both to theearphone901 and to the controller241 (except, perhaps where the DJ transmitter transmits to a wireless earphone). Thecontroller241 automatically generates control signals for theDJ200 in a manner to be described in detail below. These signals are then conveyed to theDJ transmitter120. It should be understood that this arrangement has the advantage that the digital jewelry functionality can be obtained without the const of the components for theaudio player131, and in addition, that themodular transmitter143 can then be used in conjunction with multiple audio players131 (either of different types or as the audio players are lost or broken).
Inter-unit Audio Sharing
• Overview
• Inter-unit communication involves the interactions of multiple users, who may or may not be acquaintances of each other. That is, the users can be friends who specifically decide to listen to music together, or it can be strangers who share a transient experience on a subway train. The present invention supports both types of social interaction.
• An important aspect of the present invention is the means by which groups of individuals join together.FIG. 6 is a schematic block diagram of a cluster700 ofunits100, indicating the nomenclature to be used. The cluster700 is comprised of asingle broadcast unit710, and its associatedbroadcast DJ720, as well as one or more receiveunits730 and their associatedDJs740. Thebroadcast unit710 transmits music, while the receiveunit730 receives the broadcasted music. Asearch unit750 and its associated search DJ760 are not part of the cluster700, and comprise aunit100 that is searching for abroadcast unit710 to listen to or a cluster700 to become associated with.
• It should be noted that many communications systems can be operated alternatively in two modes: one that supports peer-to-peer communications and one that requires a fixed infrastructure such as an access point.FIG. 35 is a schematic block diagram of mode switching between peer-to-peer and infrastructure modes. Amode switch1950 is made by the user, either manually, or automatically—for example, that the user chooses between different functions (listening or broadcasting, file transfers, browsing the Internet) and the system determine the optimal mode to use. A peer-to-peer mode1952 is well configured for mutual communications betweenmobile units100 that are within a predetermined distance, and is well-suited for short-range wireless communications and audio data streaming1954. Alternatively, themode switch1950 enables aninfrastructure mode1956, which is of particular usefulness in gaining access to a wide area network such as the Internet, through which remote file transfer1958 (e.g. downloading and uploading) and remote communications such as Internet browsing can be made through access points to the fixed network local wireless audio streaming.
• It should be noted, however, that certain communications systems, such as many modes of telephony, do not distinguish between mobile communications and communications through fixed access points, and that bothfile transfer1958 andaudio streaming1954 can be available through the same mode. Even in those cases, however, it can be convenient to have two modes in order to make optimal use of the advantages of the different modes. In such cases, however, the two modes can alternatively be supported by multiple hardware and software systems within the same device—for example, for remote communications to be made through a telephony system (e.g. GSM or CDMA), while thelocal audio streaming1954 can be made through a parallel communications system (e.g. Bluetooth or 802.11)—indeed, the two systems can operate simultaneously with one another.
• Inter-unit Transmission Segmentation
• Preferably, thebroadcast unit710 and the receiveunits730 exchange information in addition to the audio signal. For example, each user preferably has indications as to the number of total units (broadcastunits710 and receive units730) within a cluster, since the knowledge of cluster700 sizes is an important aspect of the social bond between the users. This also will help searchunits750 that are not part of the cluster determine which of the clusters700 that might be within their range are the most popular.
• The additional information shared between members of a cluster700 would include personal characteristics that a person might allow to be shared (images, names, addresses, other contact information, or nicknames). For example, thebroadcast unit710 will preferably, along with the music, transmit their nickname, so that other users will be able to identify thebroadcast unit710 for subsequent interactions, and a nickname is significantly easier to remember than a numerical identifier (however, such numerical identifier can be stored in theunit100 for subsequent searching).
• Such additional information can be multiplexed along with the audio signal. For example, if the audio signal is transferred as an MP3 file, assuming that there is additional bandwidth beyond that of the MP3 file itself, the file can be broken into pieces, and can be interspersed with other information.FIG. 7 is a schematic diagram of abroadcast unit710transmission820. The transmission is comprised of separate blocks of information, each represented in the figure as a separate line. In the first line, ablock code800 is transmitted, which is a distinctive digital code indicating the beginning of a block, so that asearch unit750 receiving from thebroadcast unit710 for the first time can effectively synchronize itself to the beginning of a digital block. Following theblock code800 is aMP3 block header802, which indicates that the next signal to be sent will be from a music file (in this case an MP3 file). TheMP3 block header802 includes such information as is needed to interpret the following block ofMP3 file block804, including such information as the length of theMP3 block804, and characteristics of the music (e.g. compression, song ID, song length, etc.) that are normally located at the beginning of a MP3 file. By interspersing this file header information at regular intervals, a user can properly handle music files that are first received in the middle of the transmission of an MP3 file. Next, theMP3 block804 containing a segment of a compressed music file is received.
• Dependent on the amount of music compression and the bandwidth of the inter-unit communications, other information can be sent, such as user contact information, images (e.g. of the user), and personal information that can be used to determine the “social compatibility” of the user with thebroadcast unit710 and the receiveunit730. This information can be sent between segments of MP3 files or during “idle” time, and is generally preceded by ablock code800, that is used to synchronize transmission and reception. Next, a header file is transmitted, which indicates the type of information to follow, as well as characteristics that will aid in its interpretation. Such characteristics could include the length of information, descriptions of the data, parsing information, etc. InFIG. 7, anID header806 is followed by anID block808, which includes nicknames, contact information, favorite recording artists, etc. Later, animage header810 can be followed by an image block with an image of the user. Theimage header810 includes the number of rows and columns for the image, as well as the form of image compression.
• It should be understood that the communications format described inFIG. 7 is only illustrative of a single format, and that a large number of different formats are possible within the present invention. Also, the use of MP3 encoding is just an example, and other forms of digital music encoding are within the spirit of the present invention, and can alternatively comprise streaming audio formats such as Real Audio, Windows Media Audio, Shockwave streaming audio, QuickTime audio or even streaming MP3 and others. Furthermore, these streaming audio formats can be modified so as to incorporate means for transmittingDJ200 control signals and other information.
• Transmitting Dynamic Data and Control Information
• As described above, there are benefits to two-way communications between thebroadcast unit710 and the receiveunit730. There are many methods of carrying out this communication, even if the inter-unit transmitter/receiver110 does not permit simultaneous transmission and reception. For example, additional transmission and reception hardware could be included in eachunit100. Alternatively, in thetransmission820 above, specific synchronization signals such as theblock code800 can be followed by specific intervals during which the inter-unit transmitter/receiver110 that is transmitting switches into receive mode, while the inter-unit transmitter/receiver110 that was receiving switches to transmit mode. This switch in communications direction can be for a specific interval, or can be mediated through conventional handshake methods of prior art communications protocols.
• It should be noted that in addition to transfer of static information (e.g. identifiers, contact information, or images), dynamic information and control information can also be transferred. For example, the user at the receiveunit730 can be presented with a set of positive and negative comments (e.g. “Cool!” “This is awful!”) that can be passed back to thebroadcast unit710 with the press of a button. Such information can be presented to the user of thebroadcast unit710 either by visual icon on, for example, an LCD screen, by a text message on this screen, or by artificial voice synthesis generated by thebroadcast unit710 and presented to the user in conjunction with the music.
• Alternatively, the user of the receiveunit730 can speak into a microphone that is integrated into the receiveunit730, and the user voice can be sent back to thebroadcast unit710. Indeed, the inter-unit communications can serve as a two-way or multi-way communications method between allunits100 within range of one another. This two-way or multi-way voice communication can be coincident with that of the playing of the audio entertainment, and as such, it is convenient for there to be separate amplitude control over the audio entertainment and the voice communication. This can be implemented either as two separate amplitude controls, or alternatively as an overall amplitude control, with a second control that sets the voice communications amplitude as a ratio to that of the audio entertainment. In this latter mode, the overall level of audio output by the unit is relatively constant, and the user then selects only the ability to hear the voice communication over the audio entertainment.
• In order to express their feelings and appreciation about the music they are hearing, users within a cluster700 can also press buttons on theirunits100 that will interrupt or supplement the control signals being sent to theirrespective DJs200, providing light shows that can be made to reflect their feelings. For example, it can be that all lights flashing together (and not in synchrony with the music) can express dislike for music, whereas intricate light displays could indicate pleasure.
• It is also possible to send control requests betweenunits710. For example, a receiveunit730 can make song requests (e.g. “play again”, “another by this artist”) that can show on thebroadcast unit710 user interface. Alternatively, the user of a receiveunit730 can request that control be switched, so that the receiveunit730 becomes thebroadcast unit710, and thebroadcast unit710 becomes a receiveunit730. Such requests, if accepted by theinitial broadcast unit710 user, will result in the memory storage of the identifier of thebroadcast unit710 being set in all units in the cluster700 to that of thenew broadcast unit730. Descriptions of the communications resulting in such a transfer of control will be provided below.
• Additionally, it is also possible for users ofunits100 to privately “chat” with other users while they are concurrently receiving their audio broadcasts. Such chat can be comprised of input methods including keyboard typing, stylus free-form writing/sketching, and quickly selectable icons.
• It should be understood that within the spirit of the present invention that the functional configuration can be supported by the extension of certain existing devices. For example, the addition of certain wireless transmitter and receiver, as well as various control and possibly display functionality to a portable audio player would satisfy some embodiments of the present invention. Alternatively, by the addition of music storage and some wireless transmitter and receiver functionality, a mobile telephone would also allow certain embodiments of the present invention. In such case, the normal telephony communications, perhaps supported by expanded 3G telephony capabilities, could serve to replace aspects of the IP communications described elsewhere in this specification.
• IP Socket Communication Embodiments
• A standard set of protocols for inter-unit communications is provided through IP socket communications, which is widely supported by available wireless communications hardware, including 820.11a, b and g (Wi-Fi). An embodiment of inter-unit communications is provided in FIGS.14A-B.FIG. 14A is a schematic block diagram of the socket configurations on thebroadcast unit710 and the receiveunit730.
• In the discussion below, transfer of the different messages and audio information are provided, generally but not always, through an Internet protocol. At the transport layer of such protocols, there will generally be used either a connectionless protocol or a connection-oriented protocol. Among the most common of these protocols are respectively the User Datagram Protocol (UDP) and the Transmission Control Protocol (TCP), and wherever these protocols are used below, it should be noted that any like protocol (connectionless or connection-oriented), or the entire class of protocol can generally be substituted in the discussion.
• Thebroadcast unit710, prior to the membership of the receiveunit730, broadcasts the availability of the broadcast on abroadcast1050, which is generally a TCP socket. Theannunciator1050 broadcasts on a broadcast address with a predetermined IP address and port. The receiveunit730 has aclient message handler1060 that is also a TCP socket that is looking for broadcasts on the predetermined IP address and port. When it receives the broadcast, a handshake creates a privateserver message handler1070 on a socket with a new address and port on thebroadcast unit710. Thebroadcast unit710 and the receiveunit730 can now exchange a variety of different messages using the TCP protocol between theserver message handler1070 and theclient message handler1060. This information can comprise personal information about the users of thebroadcaster unit710 and the receiveunit730. Alternatively or additionally, thebroadcast unit710 can transfer a section of the audio signal that is currently being played, so that the user of the receiveunit730 can “sample” the music that is being played on thebroadcast unit710. It should be noted that, in general, thebroadcast unit710 continues its broadcast on thebroadcast annunciator1050 for other new members.
• Once it is established that thebroadcast unit710 and thereceiver unit730 are mutually desirous of providing and receiving an audio broadcast, respectively, sockets optimized for broadcast audio are created both on thebroadcast unit710 and thereceiver unit730. These sockets will often be UDP sockets—on thebroadcast unit710, a multicast outsocket1080 and on thereceiver unit730, a multicast insocket1090.
• FIG. 14B is a schematic block flow diagram of using IP sockets for establishing and maintaining communications between abroadcast unit710 and the receiveunit730, according to the socket diagram ofFIG. 14A. In astep1100, thebroadcast annunciator1050 broadcasts the availability of audio signals. In astep1102, thereceiver unit730 searches for abroadcast annunciator1050 on theclient message handler1060 socket. Once a connection is initiated in astep1104, thebroadcast unit710 creates themessage handler socket1070 in astep1106, and thereceiver unit730 retasks themessage handler socket1060 for messaging with thebroadcast unit730. Thebroadcast annunciator1050 continues to broadcast availability through thestep1100.
• In astep1110, thebroadcast unit710 and thereceiver unit730 exchange TCP messages in order to establish the mutual interest in audio broadcasting and reception. Should there not be mutual acceptance, then the system returns to the original state in which thebroadcast unit710 is transmitting the broadcast annunciation in thestep1100, and the receiveunit730 searches for broadcasts in thestep1102. Given that the receiveunit730 and thebroadcast unit710 will be within communications distance, and that thebroadcast unit710 is transmitting an annunciation for which the receiveunit730 is receptive, thebroadcast unit710 will be set into a state where it will not establish communications with the receiveunit730 in thestep1106. This can occur either by not creating the message socket in thestep1106 when connection is made with thereceiver unit730, or that theannunciator1050 remains silent for a predetermined period, perhaps for a period of seconds.
• If thebroadcast unit710 and thereceiver unit730 do mutually accept a multicasting relationship, thebroadcast unit710 creates the multicast outUDP socket1080 in astep1112 and thereceiver unit730 creates the multicast inUDP socket1090 in thestep1114, and multicast audio transmission and reception is initiated in astep1116. It should be noted that should thebroadcast unit710 already be multicasting audio to areceiver unit730 prior to thestep1112, the multicast outsocket1080 is not created, but that the address of this existingsocket1080 is communicated to the new cluster member.
• Given that a cluster can comprise many members, the system of FIGS.14A-B must be able to expand to include multiple members.FIG. 15 is a schematic block diagram of the IP socket organization used with clusters comprising multiple members. Thebroadcast unit710 includes abroadcast annunciator1050 indicating broadcast availability for new members. For each member in the cluster, the broadcast unit further comprises amessage handler1070 dedicated to the specific member, whose receiveunit730 in turn comprises amessage handler1060, generally in a one-to-one relationship. The broadcast unit comprisesN messaging sockets1070 for the N receive units of the cluster, while each member has only asingle socket1060 connected to the broadcast unit. Thus, when a member wishes to send a message to the other members of the cluster, the message is sent via the receiveunit message handler1060 to the broadcastunit message handler1070, and which is then multiply sent to the other receiveunit message handlers1060. It is also within the teachings of the present invention for each member of the cluster to have direct messaging capabilities with each other member, assisted in the creation of the communications by thebroadcast unit710, which can share the socket addresses of each member of the cluster, such that each member can assure that it is making connections with other members of the cluster rather than units of non-members. Thebroadcast unit710 also comprises a multicast outsocket1080 which transfers audio toindividual receiver sockets1090 on each of the members of the cluster.
• Members of the cluster may come and go, especially since members will frequently move physically outside of the transmission range of thebroadcast unit710. In order for thebroadcast unit710 to determine the current number of members of its cluster, it is within the teachings of the present invention for thebroadcast unit710 to use themessaging sockets1060 and1070 to “ping” the receiveunits730 from time to time, or otherwise attempt to establish contact with each member of the cluster700. Such communications attempts will generally be done at a predetermined rate, which will generally be more frequent than once every ten seconds. Information about the number of members of a cluster can be sent by thebroadcast unit710 to the other members of the cluster, so that the users can know how many members there are. Such information is conveniently placed on a display on the unit (see, for example, FIGS.18A-B).
• Music Synchronization
• It will be generally desirable that the synchronicity of the audio playback on thebroadcast unit710 and the receiveunits730 be highly synchronized, preferably within 1 second (i.e. this provides a low level functionality of listening to music together), more preferably within 100 milliseconds (i.e. near-simultaneous sharing of music, but an observer would be able to hear —or see throughDJ200 visible cues—the non-synchronicity), and most preferably within 20 milliseconds of one another. In a simple embodiment of the present invention, all members of a cluster700 must communicate directly with thebroadcast unit710, without any rebroadcast. In such cases, making playback on the twounits710 and730 as similar as possible will tend to synchronize their audio production.
• FIG. 8A is a schematic block diagram ofaudio units100 with self-broadcast so that audio output is highly synchronized. Twoaudio units100 are depicted, including abroadcast unit710 and a receiveunit730. The organization ofaudio unit100 elements is chosen to highlight the self-broadcast architecture. Theaudio media1500, which can be compressedaudio storage310, stores the audio signals for broadcast. Theoutput port1502, which can comprise the inter-unit transmitter/receiver110, transmits a broadcast audio signal, provided by theaudio media1500. The audio media comprise a variety of different storage protocols and media, including mp3 files, .wav files, or .au files which are either compressed or uncompressed, monoaural or stereo, 8-bit, 16-bit or 24-bit, and stored on tapes, magnetic disks, or flash media. It should be understood that the spirit of the present invention is applicable to a wide variety of different audio formats, characteristics, and media, of which the ones listed above are given only by way of example. This broadcast audio signal transmitted from theoutput port1502 is received at theinput port1504, which can also comprise aspects of the inter-unit transmitter/receiver110. The signal so received is then played to the associated user via theaudio output1508.
• It should be noted that the audio output is normally connected to theaudio media1500 for audio playing when theunit710 is not broadcasting to a receiveunit730. In such case, there is no need for the audio signals to go to theoutput port1502 and thence to theinput port1504. Indeed, even when broadcasting, the audio signal within thebroadcast unit710 can go both directly to theaudio output1508 as well as to be broadcast from theoutput port1502.
• However, in order to assure the synchronicity of the audio output on thebroadcast unit710 and the receiveunit730, thebroadcast unit710 can present all audio signal from theaudio media1500 for output on theoutput port1502. The signal will be received not only on thereceiver730input port1504, but also on theinput port1504 of thebroadcast unit710. This can take place either through the physical reception of the broadcast audio signal on a radio frequency receiver, or through local feedback loops within the audio unit100 (e.g. through employment of IP loopback addresses).
• In the receiveunit730, the audio signal received at theinput port1504 goes directly to theaudio output1508, and the other elements of theunit100 depicted are not active. In thebroadcast unit710, however, if means are used to transfer audio signal between theoutput port1502 and theinput port1504 are utilized, and if such transfer means requires less time than that taken for transmitting signal from theoutput port1502 of thebroadcast unit710 to theinput port1504 of the receiveunit730, then a delay means1506 is introduced to provide a constant delay between theinput port1504 and theaudio output1508. This delay can comprise a digital buffer if the signal is digitally encoded, or an analog delay circuit if the signal is analog. Generally, the delay introduced into the audio playback will be a predetermined amount based on the characteristics of the unit hardware and software.
• Alternatively, in the case of a digital signal, the delay can be variably set according to the characteristics of the communications system. For example, if there are IP-based communications between the units, the units can “ping” one another in order to establish the time needed for a “round-trip” communications between the systems. Alternatively, each receiveunit730 of a cluster700 can transmit to the broadcast unit710 a known latency of the unit based on its hardware and transmission characteristics. It should be noted that in order to handle different delays between multiple members of a cluster, a delay can be introduced into both thebroadcast unit710 and the receiveunit730, should a new member to the cluster have a very long latency in communications.
• Note that thedelay1506 can serve a second purpose, which is to buffer the music should there be natural interruptions in the connections between the members of the cluster700 (for example, should the receiveunits730 move temporarily outside of the range of the broadcaster unit710). In such case, should enough audio signal be buffered in thedelay1506, there would not be interruption of audio signal in the receiveunit730. Even in such cases, however, in order to accommodate the differences in time to play audio between units and within a unit, the delays in thebroadcast unit710 can be larger than those in the receiveunit730.
• If the music compression and the bandwidth of the inter-unit communications are large enough, it can be that thebroadcast unit710 will broadcast less than half of the time. This will generally allow the receiveunit730 to rebroadcast the information from an internal memory store, allowing the effective range of the broadcast signal to potentially double. This can allow, through multiple rebroadcasts, for a very large range even if eachindividual unit100 has a small range, and therefore for a potentially large number of users to listen to the same music.
• In order to synchronize those that listen to the music through first, second and Nth rebroadcast, a scheme for multi-broadcast synchronization is presented inFIG. 8B, a schematic flow diagram for synchronous audio playing with multiple rebroadcast. In such a case, the cluster700 is considered to be allunits100 that synchronize their music, whether from an original broadcast or through multiple rebroadcasts. In afirst step780, aunit100 receives a music broadcast along with two additional data. The first data is the current “N”, or “hop” of the broadcast it receives, where “N” represents the number of rebroadcasts from theoriginal broadcast unit710. Thus, aunit100 receiving music from theoriginal broadcast unit710 would have an “N” of “1” (i.e. 1 hop), while aunit100 that received from that receivingunit100 would have an “N” of “2” (2 hops), and so on. A second piece of information would be the “largest N” that was known to aunit100. That is, aunit100 is in contact generally with allunits100 with which it either receives or transmits music, and each send the “largest N” with which it has been in contact.
• In asecond step782, theunit100 determines the duration between signals in the broadcasts it is receiving. Then, two actions are taken. In astep786, theunit100 rebroadcasts the music it has received, marking the music with both its “N” and the largest “N” it knows of (either from the unit from which it received its broadcast or from a unit to which it has broadcast).
• Also, in astep784, the music that has been received is played after a time equal to the duration between signals and the “largest N” minus the unit's “N”. This will allow for allunits100 to play the music simultaneously. Consider, for example theoriginal broadcast unit710. It's “N” is “0”, and its “largest N” is the maximum number of rebroadcasts in the network. It will store music for a period of “largest N” (equals “largest N” minus “0”) times the duration of a rebroadcast cycle, and then play it. For aunit100 at the furthest rebroadcast, it's “N” and “largest N” will be equal to one another, so that it will store music for no time (i.e. “largest N” minus “N” =0), but will play it immediately. This will allow allunits100 in the cluster to play music simultaneously. The limitation, however, is that there is memory in eachunit100 to store the music for a sufficient period of time. Theunits100 on the system, however, can transfer the amount of storage that is available with the other information, and the number of rebroadcasts can be limited to the amount of memory available within theunits100 that comprise the cluster700.
• As the size of this multi-broadcast cluster700 changes, the “largest N” can vary, and it will take generally on the order of “largest N” steps for the system to register “largest N”. In such cases, there can be temporary gaps in the music on the order of the duration between signals, which will generally be on the order of tens of milliseconds, but which can be longer.
• It should be noted that the synchronization of music does not need to accompany the transfer of an actual music signal.FIG. 34A is a schematic block flow diagram of the synchronization of music playing from music files present on theunits100. In this embodiment, in astep1900, the broadcast unit establishes the presence or absence of the music file comprising the music signals to be played on the receive unit. The music file can be referenced either with respect to the name of the file (e.g. “Ooops.mp3”), or a digital identifier that is associated with the music file.
• If the music file is not present, then transfer of the music file from the broadcast unit to the receive units can automatically proceed through a file transfer mechanism such as peer-to-peer transfer in astep1904. If the file was already present, or if the file has been transferred, or alternatively, if the file transfer has begun and enough of the file is present to allow the simultaneous playing of music between the twounits100, transmission of synchronization signals between the twounits100 can commence in astep1902.
• These synchronization signals can comprise many different forms. For example, the synchronization signal can be the time stamp from the beginning of the music file to the current position of the music file being played on the broadcast unit. Alternatively, the broadcast unit can send the sample number that is currently being played on thebroadcast unit100. In order to allow receiving units to begin synchronous playing in the middle of a transmission from a broadcast unit, the synchronization signals will preferably include information about the song being played, such as the name of the file or the digital identifier associated with the file.
• Transmission of this synchronization signal continues until the termination of the song, or until a manual termination (e.g. by actuating a Pause or Stop key) is caused (the frequency of transmission of the synchronization signal will be discussed below). At this point, the broadcast unit can send a termination, pause or other signal in astep1906. Note that this method of synchronization can operate when the receiving unit establishes connection with the broadcast unit even in the middle of a song.
• FIG. 34B is a schematic layout of asynchronization signal record1910 according toFIG. 34A. The order and composition of the fields can vary according to the types of music files used, the means of establishing position, the use of digital jewelry, the desire for privacy, and more.
• The position field1912 (SAMPLE#) which contains an indicator of position in a music file—in this case the sample number within the file. The music file identifier field1914 (SONGID) comprises a textual or numerical identifier of the song being played. The third field is the sample rate field1916 (SAMPLERATE), and is primarily relevant if theposition field1912 is given in samples, which allows a conversion into time. Given that the same audio entertainment can be recorded or saved at different sample rates, this allows the conversion from a potentially relative position key (samples) to one independent of sample rate (time). The jewelry signal field1918 (JEWELSIGNAL) is used to encode adigital jewelry200 control signal for controlling the output of thedigital jewelry200, should the receiver unit be associated withjewelry200. The order and composition of the fields can vary according to the types of music files used, the means of establishing position, the use of digital jewelry, the desire for privacy, and more.
• The frequency with which therecord1910 is broadcast can vary. The time of reception of therecord1910 sets a current time within the song that can adjust the position of the music playing on the receiver unit. It is possible for the record to be broadcast only once, at the beginning of the song, to establish synchronization. This, however, will not allow others to join in the middle of the music file. Furthermore, if therecord1910 is received or processed at different times for the single record, the music can be poorly synchronized. With multiple synchronization signals, the timing can be adjusted to account for the most advanced reception of the signal—that is, the music playing will be adjusted forward for the most advanced signal, but not be adjusted back for a more laggard signal.
• If the record further contains ajewelry signal field1918, the frequency with which therecord1910 should be sent should be comparable or faster than the rate with which these signals change, and should be preferably at least 6 times a second, and even more preferably at least 12 times a second. If lessfrequent record1910 transmission is desired, then multiplejewel signal fields1918 can be included in asingle record1910.
• It should be noted that givenunits100 of different design or manufacture, there can be different intrinsic delays between reception of music and/or synchronization signals and the playing of the music. Such delays can result from different speeds of MP3 decompression, different sizes of delay buffers (such as delay1506), different speeds of handling wireless transmission, differing modes of handling music (e.g. directly fromaudio media1500 toaudio output1508 on the broadcast unit, but requiring transmission through anoutput port1502 andinput port1504 for the receiver unit), and more. In such cases, it is preferable for receiver units to further comprise a manual delay switch that can adjust the amount of delay on the receiver unit. This switch will generally have two settings: to increase the delay and to decrease the delay, and can conveniently be structured as two independent switches, a rocker switch, a dial switch or equivalent. It is useful for the increments of delay determined by the switch be adjustable so as to allow users to sense the music from the broadcast unit and the receiver unit as being synchronous, and it is preferable for the increments of delay to be less than 50 milliseconds, and even more preferable for the increments of delay to be less than 20 milliseconds, and most preferable for the units of delay to be less than 5 milliseconds.
• Creation and Maintenance of Clusters
• Search units750 can be playing music themselves, or can be scanning forbroadcast units710. Indeed,search units750 can be members of another cluster700, either asbroadcast unit710 or receiveunit730. To detect a different cluster700 in which it might desire membership, thesearch unit750 can either play the music of thebroadcast unit710 to thesearch unit750 user, or it can scan for personal characteristics of thebroadcast unit710 user that are transmitted in theID block808. For example, a user can establish personal characteristic search criteria, comprising such criteria as age, favorite recording artists, and interest in skateboarding, and respond when someone who satisfies these criteria approaches.
• Alternatively, thesearch unit750 user can also identify a person whose cluster he wishes to join through visual contact (e.g. through perceiving the output of the person's light transducer240).
• Before asearch unit750 user can establish contact, it is preferable for abroadcast unit710 user, or a receiveunit730 user, to provide permissions for others to join the cluster. For example, eachunit100 will generally be able to changeably set whether no one can join with theirunit100, whether anyone can join with theirunit100, or whether permission is manually granted for each user who wishes to join with their unit into a cluster. For a cluster700, membership in the cluster can be provided either if any one member of the cluster700 permits asearch unit750 user to join, or it can be set that all members of a cluster700 need to permit other users to join, or through a variety of voting schemes. The permissions desired by each member will generally be sent betweenunits100 in a cluster as part of theID block808 or other inter-unit communications. Furthermore, these permissions can be used to establish the degree to which others can eavesdrop on aunit100 transmission. This can be enforced either through the use of cryptography, which can only provide decryption keys as part of becoming a cluster700 member, through provision of a private IP socket address or password, through standards agreed by manufacturers ofunit100 hardware and software, or byunit100 users limiting the information that is sent through theID block808 through software control.
• Thesearch unit750 user can then establish membership in the group in a variety of ways. For example, if thesearch unit750 is scanning music or personal characteristics of theunit100 user, it can alert thesearch unit750 user about the presence of theunit100. Thesearch unit750 user can then interact with thesearch unit750 interface to send theunit100 user a message requesting membership in the cluster700, which can be granted or not. This type of request to join a cluster700 does not require visual contact, and can be done even if thesearch unit750 and cluster are separated by walls, floors, or ceilings.
• Another method of establishing contact between asearch unit750 user and a cluster700 member is for thesearch unit750 user to make visual contact with the cluster700 member. In such case that physical contact or physical proximity is easily made between theunit100 of the cluster member and thesearch unit750, digital exchange can be easily made either throughdirect unit100 contact through electrical conductors, or through directional signals through infra-red LEDs, for example. For example, thesearch unit750 user can point hisunit100 at the cluster700 member unit, and then if the cluster member wishes thesearch unit750 user to join the cluster, could point hisunit100 at thesearch unit100, and with both pressing buttons, effect the transfer of IDs, cryptography keys, IP socket addresses or other information that allows thesearch unit750 user to join the cluster700.
• Alternatively, the broadcast DJ720 (or the receive DJ740) can present digital signals through the light transducer. For example,most DJ720 light transduction will be modulated at frequencies of 1-10 Hz, with human vision not being able to distinguish modulation at 50 Hz or faster. This means that digital signals can be displayed through thelight transducer240 at much higher frequencies (kHz) that will not perceived by the human eye, even while lower frequency signals are being displayed for human appreciation. Thus, thebroadcast DJ720 can receive a signal from thebroadcast unit710DJ transmitter120 containing information needed for asearch unit750 to connect to the broadcast unit's cluster700. This information will be expressed by thelight transducer240 of thebroadcast DJ720 in digital format. Thesearch unit750 can have an optical sensor, preferably with significant directionality, that will detect the signal from thelight transducer240, so that thesearch unit750 is pointed in the direction of thebroadcast DJ720, and the identifier information required forsearch unit750 to become a member of cluster700. This optical sensor serves as the DJdirectional identifier122 ofFIG. 1. At this point, if desired, thebroadcast unit710 user can determine if they want thesearch unit750 user to join the cluster700.
• A summary of means to effect joining of a cluster is provided inFIGS. 13A through E, which display means for asearch unit750 to exchange information prior to joining a cluster700 via abroadcast unit710. It is also within the teachings of the present invention for thesearch unit750 to institute communications with a receiveunit730 for the purposes of joining a cluster in a similar fashion, particularly since it may be difficult for a person outside of the cluster700 to determine which of the cluster700 members is thebroadcast unit710, and which is areceiver unit730.
• If should be noted in the FIGS.13A-G that limited range and directionality are preferred. That is, there can be a number ofbroadcast units710 within an area, and being able to select that onebroadcast unit710 whose cluster one wishes to join requires some means to allow thesearch unit750 user to select asingle broadcast unit710 among many. This functionality is generally provided either by making a very directional communication between the two devices, or by depending on the physical proximity of thesearch unit750 and the desired broadcast unit710 (i.e. in a greatly restricted range, there will be fewer competing broadcast units710). In the following description, the “broadcaster” denotes the user using thebroadcast unit710, and the “searcher” denotes the user using thesearch unit750.
• In the FIGS.13A-G, the selection of the cluster by the searcher occurs in three ways, that will referred to as “search transmission mode”, “broadcast transmission mode”, and “mutual transmission mode”, according to the entity that is conveying information. In search transmission mode, the searcher sends an ID via thesearch unit750 to thebroadcast unit710. This ID can comprise a unique identifier, or specific means of communication (e.g. an IP address and port for IP-based communication). With this ID, the broadcast unit can either request the searcher to join, or can be receptive to the searcher when the searcher makes an undifferentiated request to join local units within its wireless range. In broadcast transmission mode, the broadcaster sends an ID via thebroadcast unit710 to thesearch unit750. With this ID, the searcher unit can then make an attempt to connect with the broadcast unit710 (e.g. if the ID is an IP address and port), or the search unit can respond positively to a broadcast from the broadcast unit710 (e.g. from a broadcast annunciator1050), wherein the ID is passed and checked between the units early in the communications process. Mutual transmission mode comprises a combination of broadcast transmission mode and search transmission mode, in that information and communication is two way between the broadcaster and the searcher.
• FIG. 13A is a schematic cross-section through asearch unit750 and abroadcast unit710 in which communications are provided via visible or infrared LED emission in search transmission mode. On the right of the figure, aLED1044 with an associated lens1046 (the two of which can be integrated) transmits a directional signal from theunit case1000. This light can optionally pass thorough awindow1048 that is transparent to the light. On the left of the figure, alens element1040 collects light through a broad solid angle and directs it onto alight sensing element1042, which is conveniently a light-sensing diode or resistor. The directionality of the communication is conferred by the transmittinglens1046 and the collectinglens1040.
• Alternatively, theLED1044 can be replaced by a visible laser.FIG. 13B is a schematic cross-section through asearch unit750 and abroadcast unit710 in which communications are provided via a visible or infrared laser in search transmission mode. Thesearch unit750 comprises adiode laser1041 that is conditioned by alens1043 to form a beam that is sensed by thelight sensing element1042 on thebroadcast unit710. Because a collimated laser beam can be difficult to aim with precision at a photosensing element carried by a person, the optics can comprise a twofocus lens1043 that has a portion that produces a collimatedbeam1045, and a second portion that produces a divergingbeam1047. The collimated beam is used by the user of thesearch unit750 as a guide beam to direct the pointing of theunit750, while the divergent beam provides a spread of beam so that the human pointing accuracy can be relatively low. The means for creating the twofocus lens1043 can include the use of a lens with two different patterns of curvature across its surface, or the use of an initial diverging lens whose output intersects a converging lens across only a part of its diameter, where the light that encounters the second lens is collimated, and the light that does not encounter the second lens remains diverging. It is also within the teachings of the present invention for the lens to be slowly diverging without a collimating portion, such that the user does not get visible feedback of their pointing accuracy. In such case, the laser can emit infrared rather than visible wavelengths.
• FIG. 13C is a schematic cross-section through asearch unit750 and abroadcast unit710 in which communications are provided via visible or infrared emission from adigital jewelry element200 in broadcast transmission mode. Thedigital jewelry200 is carried by the broadcaster on achain1033, with thedigital jewelry200 visible. The digital jewelry is emitting through a light transducer1031 a high frequency signal multiplexed within the visible low frequency signal. Thesearch unit750 is pointed in the direction of thedigital jewelry200, and receives a signal through the light-sensing element1042. This manner of communication is convenient because the searcher knows, via the presence of the visible signal on thedigital jewelry200, that the broadcaster is receptive to cluster formation.
• FIG. 13D is a schematic cross-section through asearch unit750 and abroadcast unit710 in which communications are provided via contact in mutual transmission mode. In this case, thebroadcast unit710 and thesearch unit750 both comprise acontact transmission terminus1030, and electronic means by which contact transmission is performed. This means can operate either inductively (via an alternative current circuit), through direct electrical contact with alternating or direct current means, or other such means that involves a direct physical contact (indicated by the movement of thesearch unit750 to the position of the unit depicted in dotted lines). Thesearch unit750 or thebroadcast unit710 can, via automatic sensing of the contact or manual control, initiate communications transfer. Given the mutuality of contact as well as the physical equivalence of the twounits710 and750, information transfer is possible in both directions. It should be noted that in the case of direct current connection, thetermini1030 will comprise two contact points, both of which must make electrical contact in order for communications to occur.
• FIG. 13E is a schematic cross-section through asearch unit750 and abroadcast unit710 in which communications are provided via sonic transmissions in broadcast transmission mode. The broadcaster (or receivers) will be listening to the audio information generally throughheadphones1020 or earphones, all of which comprisespeakers1022 that, to one extent or another, leak sonic energy. The use of audio output devices as depicted inFIG. 10 andFIGS. 11A and 11B that admit external sound, will also increase the amount of sound energy lost. This sound energy can be detected by the searcher via a directional speaker comprising asound collector1024 and amicrophone1026. This system requires that the sound output of thebroadcast unit710 and thereceiver unit750 also output an ID encoded in the sound. Such sound can be conveniently output at inaudible frequencies, such as 3000-5000 Hz, which carry sufficient bandwidth to encode short messages or identifiers (e.g. an IP address and port number can be carried in 5 bytes). Sound energy, especially at higher frequencies, can be quite directional, depending on the shape of thecollector1024 and the structure of themicrophone1024, allowing good directional selection by the searcher.
• FIG. 13F is a schematic cross-section through asearch unit750 and abroadcast unit710 in which communications are provided via radio frequency transmissions in broadcast transmission mode. The radio frequency transmissions are not strongly directional (and for the purposes of the broadcast of audio information, are designed to be as directionless as possible). In order to distinguish a desired cluster700 to join and an undesired cluster700, a number of strategies can be employed. For example, the strengths of the various signals can be measured and the strongest chosen for connection. Alternatively, if there are multiple broadcast connections available, thesearch unit750 can sequentially attempt a connection with eachbroadcast unit710. When the attempt is made, thebroadcast unit710 can, prior to alerting the broadcaster of the attempted joining by a new member, cause thedigital jewelry200 associated with thebroadcast unit710 to visibly flash a characteristic signal. The searcher can then verify by pressing the appropriate button on thesearch unit750 his desire to join the cluster700 of the broadcastdigital jewelry200 that had just flashed. If the searcher decided not to join that cluster700, thesearch unit750 could search for yet anotherunit broadcast unit750 within range, and attempt to join.
• At any time, the members of a cluster700 can share personal characteristics (nickname, real name, address, contact information, face or tattoo images, favorite recording artists, etc.) through selection of choices of theunit100 interface, with all such characteristics or a subset thereof to be stored on theunits100. In order to assist cluster700 members in determining whether or not to accept a person into their cluster700, asearch unit750 member can display either the total number of people with whom he has shared personal characteristics, or he can alternatively allow the cluster members to probe his store of persons with whom personal characteristics have been stored to see whether a particular trusted person or group of common acquaintances are present therein. It is also within the spirit of the present invention for individuals to rate other individual members of their cluster, and such ratings can be collated and passed from person to person or cluster to cluster, and can be used for a cluster700 to determine whether asearch unit750 person should be added to the cluster700.
• FIG. 17 is a matrix of broadcaster and searcher preferences and characteristics, illustrating the matching of broadcaster and searcher in admitting a searcher to a cluster. A broadcaster preference table1160 includes those characteristics that the broadcaster wishes to see in a new member of a cluster. These characteristics can include gender, age, musical “likes” and “dislikes”, the school attended, and more. The searcher similarly has a preference table1166. The searcher preference table1166 and broadcaster preference table1160 are not different in form, as the searcher will at another time function as the broadcaster for another group, and his preference table1166 will then serve as the broadcaster preference table.
• The broadcaster preference table1160 can be automatically matched with a searcher characteristics table1162. This table1162 comprises characteristics of the searcher, wherein there will be characteristics that overlap in type (e.g. age, gender, etc.) which can then be compared with the parameters in the broadcaster preference table. This matching occurs during the period when the searcher is interrogating the cluster with interest in joining. Similarly, there is a broadcaster characteristics table1164 indicating the characteristics of the broadcaster, which can be matched against thesearcher preferences tale1166.
• The algorithm used in approving or disapproving of an accord between a preference table and a characteristics table can be varied and set by the user—whether by the broadcaster to accept new members into a cluster, or by a searcher to join a new cluster. For example, the user could require that the gender be an exact match, the age within a year, and the musical preferences might not matter. The user can additionally specify that an accord is acceptable if any one parameter matches, specify that an accord be unacceptable if any one parameter does not match, specify an accord be acceptable based on the overlap of a majority of the individual matches, or other such specification.
• It should be noted that the broadcaster preferences table1160 and the broadcaster characteristics table1164 (and likewise with the searcher tables1162 and1166) can be a single table, according to the notion that a person will prefer people who are like themselves. Each user could then express the acceptable range of characteristics of people with which to join as a difference from their own values. For example, the parameter “same” could mean that the person needs to match closely, whereas “similar” could indicate a range (e.g. within a year) and “different” could mean anyone. In this way, there would not be the burden on the user to define the preference table1160 or1166 in a very detailed manner.
• In the case of a cluster, the transfer of information between the searcher and the cluster can, as mentioned above, involve not only the broadcaster, but also other members of the cluster (especially since the searcher may not know the identity of a cluster's broadcaster from external observation). The cluster can also make communal decisions about accepting a new member. That is, if there are 4 members of a cluster, and a searcher indicates an interest in joining the cluster, there can be voting among the members of a cluster regarding the acceptance of the new member. The procedure of voting will normally be done by messaging among the members, which can be assisted by structured information transfer as will be described below.
• A number of such voting schemes are described inFIG. 19, a table of voting schemes for the acceptance of new members into a cluster. The first column is the name of the rule, and the second column describes the algorithm for evaluation according to the rule. In the “BROADCASTER” rule, the broadcaster decides whether or not the new member will be accepted. The new member is accepted when the broadcaster indicates “yes” and is otherwise rejected.
• In the “Majority” rule, the members are polled, and whenever a majority of the members vote either acceptance or rejection, the new member is accordingly accepted or rejected. It should be noted that this rule (as well as the rules to follow) depends on the broadcaster or other member of the cluster having knowledge of the number of members in the cluster, which will generally be the case (e.g. in an IP socket based system, the broadcaster can simply count the number of socket connections). Thus, if the number of members in a cluster is given as N_mem, as soon as (N_mem/2)+1 members have indicated the same result, that result is then communicated to the broadcaster, the members and the prospective new member. If the number of members is even, and there is a split vote, the result goes according to the broadcaster's vote.
• According to the “Unanimous” rule, a new member is accepted only on unanimous decision of the members. Thus, the prospective new member is rejected as soon as the first “no” vote is received, and is accepted only when the votes of all members of the cluster are received, and all of the votes are positive.
• The “Timed Majority” rule is similar to that of the “Majority” rule, except that a timer is started when the vote is announced, the timer being of a predetermined duration, and in a preferred embodiment, is indicated as a count down timer on theunit100 of each member of the cluster700. The vote is completed when (N_mem/2)+1 members vote with the same indication (“yes” or “no”) if the timer has not completed its predetermined duration. If all of the members have voted, and the vote is a tie, the result goes in accordance with that of the broadcaster. If the timer has expired, and the vote has not been decided, the number of members that have voted is considered a quorum of number Q. If (Q/2)+1 members have voted in some fashion, that is the result of the vote. Otherwise, in the case of a tie, the result goes according to the vote of the broadcaster. If the broadcaster has not voted, the vote goes according to the first vote received.
• The “Synchronized Majority” rule is similar to the Timed Majority rule, but instead of initiating the vote, and then waiting a predetermined period for members to vote, the vote is announced, and then there is a predetermined countdown period to the beginning of voting. The voting itself is very limited in time, generally for less than 10 seconds, and preferably for less than 3 seconds. Counting votes is performed only for the quorum of members that vote, and is performed according to the rules for the Timed Majority.
• There are many different voting schemes consistent with creating, growing and maintaining clusters within the spirit of the present invention. For instance, in cases where there are close votes, the voting can be reopened for individuals to change their vote. In cases, members can request a new round of voting. Furthermore, the voting can be closed ballot, in which the votes of individuals are not known to the other members, or open voting, in which the identity of each member's vote is publicly displayed on eachunit100.
• In addition, the voting can be supported and enhanced by information made available to each member through displays on theunits100.FIG. 18A is a screenshot of anLCD display1170 of aunit100, taken during normal operation. Thedisplay1170 is comprised of two different areas, anaudio area1172 and abroadcaster area1174. Theaudio area1172 includes information about the status of the audio output and theunit100 operation, which can include battery status, the name of the performer, the title of the piece of music, the time the audio has been playing, the track number and more. Thebroadcaster area1174 comprises information about the status of the cluster700. In the example given, the broadcaster area includes the number “5”, which represents the number of people current in the cluster, the text “DJ”, which indicates that theunit100 on which thedisplay1170 is shown is currently the broadcaster of the cluster700, and the text “OPEN”, which indicates that the cluster is open for new members to join (the text “CLOSED” would indicate that no new members are being solicited or allowed).
• FIG. 18B is a screenshot of anLCD display1170 of aunit100, taken during voting for a new member. Theaudio area1172 is replaced by a newmember characteristics area1176, in which characteristics of the prospective new member are displayed. Such characteristics can include the name (or nickname) of the prospective new member, their age, and their likes (hearts) and dislikes (bolts). In thebroadcaster area1174, the digit “3” indicates that there are three current members of the cluster700, and an ear icon indicates that thecurrent unit100 is being used to receive from the broadcaster rather than being a broadcaster, and the name [ALI] indicates the name of the current broadcaster. The text “VOTE-MAJ” indicates that the current vote is being done according to the Majority rule. Thebroadcaster area1174 and the newmember characteristics areas1176 provide the information needed by the existing member to make a decision about whether to allow the prospective new member to join.
• Thedisplays1170 of FIGS.18A-B are indicative only of the types of information that can be placed on adisplay1170, but it should be appreciated that there are many pieces of information that can be placed onto thedisplays1170 and that the format of the display can be very widely varied. Furthermore, there need not be distinctaudio areas1172 andbroadcaster areas1174, but the information can be mixed together. Alternatively, especially with verysmall displays1170, thedisplay1170 can be made to cycle between different types of information.
• It is also within the spirit of the present invention for individuals to rate other individual members of their cluster, and such ratings can be collated and passed from person to person or cluster to cluster, and can be used for a cluster700 to determine whether asearch unit750 person should be added to the cluster700.FIG. 27 is a schematic block flow diagram of using a prospective new member's previous associations to determine whether the person should be added to an existing cluster.
• In astep1400, from asearch unit750, the prospective new member places an external communication request with anoperational broadcast annunciator1050 by abroadcast unit710. In astep1402, a temporary message connection is established through which information can be passed mutually between thesearch unit750 and thebroadcast unit710. Thebroadcast unit710 requests personal and cluster ID's from thesearch unit750. The personal ID is a unique identifier that can be optionally provided to everyaudio unit100, and which can further be optionally hard-encoded into the hardware of theunit100. The cluster IDs represent the personal ID's ofother units100 with which thesearch unit750 has been previously associated in a cluster. In astep1406, thebroadcast unit710 matches the incoming personal IDs and cluster IDs with personal ID's and cluster IDs that are stored in the memory of thebroadcast unit710. If there exist a sufficient number of matches, which can be computed as a minimum number or as a minimum fraction of the IDs stored in thebroadcast unit710, the new member of thesearch unit750 can be accepted into the cluster. In astep1412, thesearch unit750 can then store the ID of thebroadcast unit710 and the other members of the existing cluster700 into his cluster IDs, and thebroadcast unit750 and the other receiveunits730 of the cluster can then store the personal ID of thesearch unit750 into their cluster IDs. If there does not exist a sufficient number or quality of matches, thebroadcast unit710 will reject the prospective new member, optionally send a message of rejection, and then close the socket connection (or other connection that had been created) between thebroadcast unit710 and thesearch unit750. No new IDs are stored on eitherunit710 or750.
• It is also within the spirit of the present invention for other information associated with the personal and cluster IDs to be shared and used in the algorithm for determining whether to accept or reject a prospective new member into a cluster700. This information can include rating information, the duration of association with another cluster700 (i.e. the longer the association, the more suitable the social connection of that person with the cluster700 would have been), the size of the cluster700 when the searcher was a member of a particular cluster700, the popularity of a cluster700 (measured by the number of cluster IDs carried by the broadcast unit710), and more. The matching program, likewise, would weight the existence of a match by some of these quality factors in order to determine the suitability of the searcher to join the cluster.
• While the comparisons can be made between asearch unit750 personal and cluster IDs and those from thebroadcast unit710, representing the personal experience of the owners of the respective units, it is also possible that the reputation or desirability of individuals with a given personal ID can be posted to or retrieved from trusted people. For example, two friends can swap the information of which IDs are to be trusted or not between twounits100, or alternatively, can be posted onto or retrieved from the Internet. For example, after a bad personal experience with aunit100 with a personal ID of 524329102, a person could post that ID on the Internet to share with friends, so that the friends could avoid allowing that person to join, or avoid joining a cluster with that person.
• It should be noted that publishing a list of personal IDs allows people to establish the breadth of their contacts. By posting their contacts on web sites, people can demonstrate their activity and popularity. This also encourages people to join clusters, in order to expand the number of people with whom they have been associated. Furthermore, the personal ID serves as a “handle” by which people can further communicate with one another. For example, on the Internet, a person can divulge a limited amount of information (e.g. an email address) that would allow other people with whom they have been in a cluster together to contact them.
• It should be noted that the formation and maintenance of a cluster700 requires the initial and continued physical proximity of thebroadcast unit710 and the receiveunit730. In order to help maintain such physical proximity conducive to cluster maintenance, feedback mechanisms can be used to alert the users to help them maintain the required physical proximity, as will be discussed below.
• FIG. 28 is a block flow diagram indicating the steps used to maintain physical proximity between thebroadcast unit710 and the receiveunit730 via feedback to the receive unit user. In astep1530, the wireless connection between thebroadcast unit710 and the receiveunit730 is established. In astep1532, the connection between the twounits710 and730 is tested. There are a number of different means by which this testing can take place. For example, in IP-based communications, the receiveunit730 can from time to time—though generally less than every 10 seconds, and even more preferably less than every 1 second—use the “ping” function to test the presence and speed of connection with thebroadcast unit710. Alternatively, the receiveunit730 will be receiving audio signals wirelessly almost continuously from thebroadcast unit710, and a callback alert function can be instituted such that loss of this signal determined at a predetermined repeat time—which is conveniently less than 5 seconds, and even more preferably less than every 1 second—and which is then reported to the system.
• While the methods above determine the absolute loss of a signal, they do not anticipate loss of signal. A method that does anticipate signal issues prior to loss is the measurement of signal strength. This can be done directly in the signal reception hardware by measuring the wireless signal induced current or voltage.
• In astep1534, the results of the connection testing performed in thestep1532 is analyzed in order to determine whether the signal is adequate. It should be noted that a temporary loss of signal, lasting even seconds, may or may not be of importance. For example, thebroadcast unit710 user and receiveunit730 users could walk on opposite sides of a metallic structure, enter a building at different times, change their body posture such that the antennae are not optimally situated with respect to one another, etc. Thus, an algorithm is generally used to time average the results of thestep1532, with the results conveniently time averaged over a matter of seconds.
• Whatever the results of the signal test of thestep1534, thestep1532 is continuously repeated as long as the connection between thebroadcast unit710 and the receiveunit730 is present. If the signal is deemed inadequate, however, feedback to that effect is provided to the receiveunit730 user in astep1536. The user feedback can occur through a variety of mechanisms, including visual (flashing lights) and tactile (vibration) transducers, emanating either from theaudio unit100 or thedigital jewelry200. For example, thereceiver unit730 can send a signal to the associateddigital jewelry200 to effect a special sequence of light transducer output.
• It is most convenient, however, for the audio output of thereceiver unit730 as heard by the user to be interrupted or overlain with an audio signal to alert the user to the imminent or possible loss of audio signal. This audio signal can include clicks, beeps, animal sounds, closed doors, or other predetermined or user selected signals heard over silence or the pre-existing signal, with the signal possibly being somewhat reduced in volume such that the combination of the pre-existing signal and the feedback signal is not unpleasantly loud.
• It should be noted that the flow diagram ofFIG. 28 refers specifically to alerting the receiveunit730 user of potential communications issues. Such alerting can also be usefully transferred to or used by thebroadcast unit710. For example, with knowledge of the communications issues, thebroadcast unit710 user can move more slowly, make sure that the unit is not heavily shielding, that any changes in posture that could relate to the problems are reversed, etc. Thebroadcast unit710 can perform communications tests (as in the step1532) or analyze the tests to determine if the communications are adequate (as in the step1534)—particularly through use of the messaging TCP channels. Given that there can be multiple receiveunits730 connected to ssingle broadcast unit710, it is generally preferable for the tests to be performed on the receiveunits730, and problems to be communicated to thebroadcast unit710—provided, however, that communications still exist for such communication.
• In order to overcome this deficiency, it is possible for thereceiver unit730 to communicate potential problems in communications to thebroadcast unit710 at an early indication. Thebroadcast unit710 then starts a timer of predetermined length. If thebroadcast unit710 does not receive a “release” from the receiveunit730 before the timer has completed its countdown, it can then assume that communications with the receiveunit730 have been terminated, and it can then send feedback to thebroadcast unit710 user.
• It is also within the teachings of the present invention for both thebroadcast unit710 and the receiveunit730 to independently monitor the connections with each other, and alert their respective users of communications problems.
• It should be noted that the use of audio alerts can be used more generally within the user interface of theaudio units100. Thus, audio alerts can be conveniently used to inform the user of the joining of new members to the cluster700, the initiation of communications withsearch units750 outside of the group, the leaving of the group by existing cluster700 members, the request by a receiveunit730 to become thebroadcast unit710, the transfer of cluster control from abroadcast unit710 to a receiveunit730, and more. These alerts can be either predetermined by the hardware (e.g. stored on ROM), or can be specified by the user. Furthermore, it can be convenient for thebroadcast unit710 to temporarily transfer to new members of the cluster custom alerts, so that the alerts are part of the experience that thebroadcast unit710 user shares with the other members of the cluster. Such alerts would be active only as long as the receive units were members of the cluster700, and then would revert back to the alerts present before becoming cluster members.
• Cluster Hierarchy
• A receiveunit730 can also be thebroadcast unit710 of a separate cluster700 from the cluster700 of which it is a member. This receive unit is called abroadcasting receiver770. In such case, it is convenient for the receiveunits730 that are associated with thebroadcasting receiver770 to become associated with the cluster700 of which thebroadcasting receiver770 is a member. This can conveniently be accomplished in two different ways. In a first manner, the receiveunits730 that are associated with thebroadcasting receiver770 can become directly associated with thebroadcast unit710, so that they are members only of the cluster700, and are no longer associated with thebroadcasting receiver770. In a second manner, the receiveunits730 associated with thebroadcasting receiver770 can remain primarily associated with thebroadcasting receiver770, as shown inFIGS. 9A and 9B, which are schematic block diagrams of hierarchically-related clusters. InFIG. 9A, the receiveunits730 that are members of a sub-cluster701 of which the broadcast unit is a broadcast receiveunit770, can receive music directly from the broadcast receiveunit710, while retaining their identification with thebroadcasting receiver770, such that if thebroadcasting receiver770 removes itself or is removed from the cluster700, these receiveunits730 similarly are removed from the cluster700. In order to provide this form of hierarchical control, the sub-cluster701 receiveunits730 can obtain an identifier, which can be an IP socket address, from the broadcast receiveunit770, indicating the desired link to thebroadcast unit710. The sub-cluster receiveunits730, however, maintain direct communications with the broadcast receiveunit770, such that on directive from theunit770, they break their communications with theunit710, and reestablish normal inter-unit audio signal communications with the broadcast receiveunit770. In an embodiment using IP addressing and communications, this can involve the maintenance of TCP messaging communications between the sub-cluster701 receiveunits730 with the broadcast receiveunit770, during the time that the sub-cluster701 is associated with the cluster700.
• InFIG. 9B, the receiveunits730 of the sub-cluster701 receive music directly from thebroadcasting receiver770, which itself receives the music from thebroadcast unit710. In such case, as thebroadcasting receiver770 is removed from the cluster700, the receiveunits730 of the sub-cluster701 would also not be able to hear music from the cluster700.
• It would be apparent that such an arrangement can be hierarchically arranged, such that the receiveunit730 of the sub-cluster701 can itself be thebroadcast receiver770 of another sub-cluster701, and so forth. The advantage of this arrangement is that people that are associated with one another, forming a cluster700, can move as a group from cluster to cluster, maintaining a separate identity.
• It should be also noted that the configuration of communications between members of a hierarchical cluster can be variously arranged, not only as shown inFIGS. 9A and 9B. For example, every member of the cluster700 can have a direct link between every other member of the cluster700, such that no re-broadcast of messages needs to take place. Furthermore, given that there are different inter-unit communications (for example, messaging versus audio broadcast), it is within the teachings of the present invention that the configuration for the different modes of communication can be different—for example direct communications between thebroadcast unit710 for audio broadcast, but peer-to-peer communications between individual units for messaging.
• Maintaining Private Communications
• In order to restrict membership in a cluster700, either the information transfer must be restricted, such as by keeping private the socket IP addresses or passwords or other information that is required for a member to receive the signal, or the signal can be transmitted openly in encrypted form, such that only those members having been provided with the encryption key can properly decode the signal so sent. Both of these mechanisms are taught within the present invention, and are described at various points within this specification.
• FIG. 32A is a schematic block diagram of maintaining privacy in open transmission communications. In this case, the transmission is freely available to searchunits750 in astep1830, such as would occur with a digital RF broadcast, or through a multicast with open a fixed, public socket IP address available in certain transmission protocols. In this case, the broadcast audio signal or information signal is made in encrypted form, and membership in the cluster is granted through transfer of a decoding key in astep1832.
• FIG. 32B is a schematic block diagram of maintaining privacy in closed transmission communication. In astep1834, thebroadcast unit710 makes a closed transmission broadcast, such as through a socket IP address, that is not publicly available. In astep1836, thebroadcast unit710 provides the private address to thesearch unit750, which can now hear the closed transmission from thestep1834, which is not encrypted. Alternatively, or in addition to the provision of the private address in thestep1836, the establishment of the connection through the private, closed transmission is effected via a password provided in astep1838. This password can, for example, be used in the step1110 (e.g. seeFIG. 14B) to determine whether thebroadcast unit710 accepts thesearch unit750 for audio multicasting.
• In this section, the encryption of the musical signal and/or associated information about personal characteristics of members of the cluster700 is described. Thecustom compressor330 of theunit100 can perform the encryption. In such a case, before joining a cluster, thesearch unit750 can only receive some limited information, such as characteristics of the music being heard or some limited characteristics of the users in the cluster700. If thesearch unit750 user requests permission to join the cluster700 and it is granted, thebroadcast unit710 can then provide a decryption key to thesearch unit750 that can be used to decrypt the music or provide a private IP address for multicasting, as well as supply additional information about the current members of cluster700.
• It should be noted that in certain cases, it can be useful to have multiple forms of privacy protection. For example, abroadcast unit710 can provide asearch unit750 access to audio signals and information for the cluster700, but can reserve certain information based on encryption to only some members of the cluster700. For example, if a group of friends comprise a cluster700, and accept some new members into the cluster700, access to more private information about the friends, or communications between friends, can be restricted on the basis of shared decryption keys.
• FIG. 33 is a schematic block diagram of a hierarchical cluster, as inFIG. 9A, in which communications between different units is cryptographically or otherwise restricted to a subset of the cluster members. Thus, there are three types of communication that are used in the communication: channel A, which takes place between the members of the original cluster; channel B, which takes place between the members of the original cluster (mediated through the broadcast unit710) and members of the sub-cluster701; and channel C, which takes place between the members of the sub-cluster701. Thus, a communications originating from thebroadcast unit710 can be directed either through channel A or channel B, and likewise, a communications originating from the broadcast receiveunit770 can be directed either at members only of the sub-cluster701 through channel C, or to all members of the cluster700 through both channels C and B, which is then communicated trough channel A.
• A number of means can be used to maintain such independent channels. For example, separate socket communications can be established, and the originators of the communications can determine that information which is carried on each separate channel. For example, given an open transmission scheme such as digital RF signal, the information can be encoded with separate keys for the different channels of communication—thus, the cryptographic encoding determines each channel. A givenunit100 can respond to more than one encoding. Indeed, a channel identifier can be sent with each piece of information indicating the ID of the decoding key. If aunit100 does not have the appropriate decoding key, then it is not privy to that channel communications.
• Alternatively, if the communications is IP socket based, then each channel is determined by IP socket addresses. Furthermore, access to those addresses can be, for example, password controlled. Also, the socket communications can be broadcast so that anyunit100 can receive such broadcast, but that decoding of the broadcast can be mediated through cryptographic decoding keys.
• It should be noted that there can be multiple forms of communication, which can comprise messaging communications using the TCP/IP protocols, versus multicasting using UDP protocols, and alsoDJ200 control signals using yet another protocol. The access to each of these communications can be controlled via different privacy hierarchies and techniques. For example, the audio multicasting will be available to all members within a cluster, while the messaging may retain different groupings of privacy (e.g. hierarchical), while the DJ control signals will generally be limited to communications between a givenunit100 and itscorresponding DJs200.
• Broadcast Control Transfer
• The dynamics of cluster700 can be such that it will be desirable for a receiveunit730 to become the broadcast unit for the cluster. Such a transfer of broadcast control will generally require the acquiescence of thebroadcast unit710 user. To effect such a transfer, the user of thereceiver unit730 desiring such control will send a signal to thebroadcast unit710 expressing such intention. If the user of thebroadcast unit710 agrees, a signal is sent to all of the members of the cluster indicating the transfer of broadcast control, and providing the identifier associated with the receiveunit730 that is to become thebroadcast unit710. Thebroadcast unit710 that is relinquishing broadcast control now becomes a receiveunit730 of the cluster700.
• It should be noted that the transfer of control as described above requires the manual transfer of control, such as actuation of a DJ switch. This switch can be limited to this function, or can be part of a menu system, in which the switch is shared between different functions. It is also within the spirit of the present invention that there be voice-activated control of theunit100, in which theunit100 further comprises a microphone for input of voice signals to a suitable controller within theunit100, wherein the controller has voice-recognition capabilities.
• In the case of a cluster700 whosebroadcast unit710 is no longer broadcasting (e.g. it is out of range of the receiveunits730, or it is turned off), the cluster can maintain its remaining membership by selecting one of the receiveunits730 to become thenew broadcast unit710. Such a choice can happen automatically, for example by random choice, by a voting scheme, or by choosing the first receiveunit730 to have become associated with thebroadcast unit710. If the users of the cluster-associated units deem this choice to be wrong, then they can change thebroadcast unit710 manually as described above.
• The receiveunit730 that is chosen to become thebroadcast unit710 of the cluster700 will generally prompt its user of the new status, so that the newly designatedbroadcast unit710 can make certain that it is playing music to the rest of the cluster700. It can be further arranged so that a newly-designatedbroadcast unit710 will play music at random, from the beginning, or a designated musical piece in such case.
• An embodiment of a transfer of broadcast control using IP socket communications protocols is described here.FIG. 16 is a schematic block flow diagram of transfer of control between thebroadcast unit710 and the first receiveunit730. In astep1130, the receiveunit730 requests broadcast control (designated here as “DJ” control). In astep1132, the user of thebroadcast unit710 decides whether control will be transferred. The decision is then transferred back to the first receiveunit730 via the TCP messaging socket. If the decision is affirmative, the first receiveunit730 severs its UDP connection to thebroadcast unit710 multicast. The reason for this is to allow the receiveunit730 opportunity to prepare the beginning of its broadcast, if such time is required, and the user cannot both listen to the multicast as well as prepare its own audio selections, which occurs in astep1136. In astep1138, the receiveunit730 creates a multicast UDP socket with which it will later broadcast audio to other members of the cluster, while in astep1140, the receiveunit730 creates a broadcast annunciator TCP socket with which to announce availability of the cluster, as well as to accept transfers of members from thebroadcast unit710 to itself as the new broadcast unit.
• When the two new sockets (multicast and annunciator) are created, the receiveunit730 transmits the new socket addresses to thebroadcast unit710 in astep1142. Since the other members of the cluster are guaranteed to be in contact with the broadcast unit, they can get addresses of the new, soon-to-be broadcast unit from the existing broadcast unit. In astep1144, theoriginal broadcast unit710 transmits to the other cluster members (receiveunits730numbers 2−N) the addresses of the sockets on the receive1unit730 that is now thenew broadcast unit710, and terminates its own multicast. The termination is performed here because the other receive units will be transferring to the new multicast, and because theoriginal broadcast unit710 is now becoming a receiveunit730 in the reconstituted cluster. In thestep1148, multicast of audio is now provided by the receive1unit730 that has now become the new broadcast unit710), and the original broadcast unit is listening to audio provided not by itself, but rather by the new broadcast unit.
• In astep1146, performed roughly synchronously with thestep1144, theoriginal broadcast unit710 transmits the socket addresses of the message handler TCP sockets of the other members of the cluster700 (i.e. the receiveunits730numbers 2−N). In thesubsequent step1150, theoriginal broadcast unit710 and the receiveunits730numbers 2−N establish new messaging connections with the receive1unit730 that is now thenew broadcast unit710. While there can be a set of criteria for the acceptance of a new member to a cluster, because the receive1unit730 has received the message socket addresses of the other members of the cluster in thestep1144, the receive1unit730 accepts new members with the socket addresses received. It should be noted that instead of socket addresses being the identifiers passed, the identifiers can also be unique machine IDs, random numbers, cryptograpically encoded numbers, or other such identifiers that can be transmitted from one member of the cluster to another.
• It should be noted in certain embodiments, that there can be insufficient time for thenew broadcast unit710 to determine a set of music to broadcast to the members of its cluster. It is within the spirit of the present invention for a user to set a default collection of music that is broadcast when no other music has been chosen. This set of music can comprise one or more discrete audio files.
Audio and DJ Choreography
• One of the attractions of the present invention is that it allows users to express themselves and share their expressions with others in public or semi-public fashion. Thus, it is highly desirable for users to be able to personalize aspects of both the audio programming as well as the displays of theirDJs200.
• Audio
• Audio personalization comprises the creation of temporally linked collections of separate musical elements in “sets.” These sets can be called up by name or other identifier, and can comprise overlapping selections of music, and can be created either on theunit100 through a visual or audio interface, or can be created on a computer or other music-enabled device for downloading to theunit100.
• In addition, theunit100 or other device from which sets are downloaded can comprise a microphone and audio recording software whereby commentary, personal music, accompaniment, or other audio recordings can be recorded, stored, and interspersed between commercial or pre-recorded audio signals, much in the manner that a radio show host or “disc jockey” might alter or supplement music. Such downloads can be accessible from a variety of sources including Internet web sites and private personal computers.
• Automatic Generation ofDJ200 Control Signals
• In this section, we will describe the automatic and manual generation of control signals for theDJ200 transducers. The control signals are generally made to correspond to audio signals played on theunits100, although it is within the spirit of the present invention for such control signals to be made separate from audio signals, and to be displayed on the digital jewelry independently of audio signals played on theunit100.FIG. 20 is a time-amplitude trace of an audio signal automatically separated into beats.Beats1180,1182 and1183 are denoted by vertical dashed and dotted lines and, as described below, are placed at locations on the basis of their rapid rise in low-frequency amplitude relative to the rest of the trace. As can be seen, thebeats1180 are generally of higher amplitude than theother beats1182 and1183, and represent the primary beats of a 4/4 time signature. Thebeat1183 is of intermediate nature between the characteristics of thebeats1180 and1182. It represents the third beat of the second measure. Overall, the audio signal thus displayed can be orally represented as ONE-two-Three-four-ONE-two-Three-four (“one” is heavily accented, and the “three” is more lightly accented), which is common in the 4/4 time signature.
• Processing of this data can proceed via a number of different methods.FIG. 21A is a block flow diagram of a neural network method of creatingDJ200 transducer control signals from an audio signal as shown inFIG. 20. In astep1200, audio data is received either at theunit100 or theDJ200. It should be noted that the creation of control signals from audio signals can, within the present invention, take place at either theunit100 or theDJ200, or even at a device or system not part of or connected to theunit100 or DJ200 (as will be described in more detail below). In anoptional step1202, the data is low pass filtered and/or decimated so that the amount of data is reduced for computational purposes. Furthermore, the data can be processed for automatic gain to normalize the data for recording volume differences. Furthermore, the automatic gain filtering can provide control signals of significant or comparable magnitude throughout the audio data.
• In general, the creation of the audio signal depends on audio representing a period of time, which can be tens of milliseconds to tens of seconds, depending on the method. Thus, the audio data from thestep1202 is stored in aprior data array1204 for use in subsequent processing and analysis. At the same time, the current average amplitude, computed over an interval of preferably less than 50 milliseconds, is computed in astep1208. In broad outline, the analysis of the signal compares the current average amplitude against the amplitude history stored in the prior data analysis. In the embodiment ofFIG. 21A, the comparison takes places through neural network processing in astep1206, preferably with a cascading time back propagation network which takes into account a slowly varying time signal (that is, the data in the prior data array changes only fractionally at each computation, with most of the data remaining the same). The use of prior steps of neural network processing in the current step of neural network processing is indicated by the looped arrow in thestep1206. The output of the neural network is a determination whether the current time sample is a primary or a secondary beat. The neural network is trained on a large number of different music samples, wherein the training output is identified manually as to the presence of a beat.
• The output of the neural network is then converted into a digital jewelry signal in astep1210, in which the presence of a primary or secondary beat determines whether a particular light color, tactile response, etc., is activated. This conversion can be according to either fixed, predetermined rules, or can be determined by rules and algorithms that are externally specified. Such rules can be according to the aesthetics of the user, or can alternatively be determined by the specific characteristics of the transducer. For example, some transducers can have only a single channel or two or three channels. While light transducers will generally work well with high frequency signals, other transducers, such as tactile transducers, will want signals that are much more slowly varying. Thus, there can be algorithm parameters, specified for instance in configuration files that accompanyDJ200 transducers, that assist in the conversion of beats to transducer control signals that are appropriate for the specific transducer.
• FIG. 21B is a block flow diagram of a deterministic signal analysis method of creatingDJ200 transducer control signals from an audio signal as shown inFIG. 20. The data is received in thestep1200. In this case, a running average over a time sufficient to remove high frequencies, and preferably less than 50 milliseconds, is performed in astep1212. Alternatively, a low pass filter and/or data decimation as in thestep1202 can be performed.
• In astep1214, the system determines whether there has been a rise of X-fold in average amplitude over the last Y milliseconds, where X and Y are predetermined values. The value of X is preferably greater than two-fold and is even more preferably three-fold, while the value of Y is preferably less than 100 milliseconds and is even more preferably less than 50milliseconds. This rise relates to the sharp rises in amplitude found in the signal at the onset of a beat, as shown inFIG. 20 by thebeat demarcations1180,1182, and1183. If there has not been a rise meeting the criteria, the system returns to thestep1200 for more audio input.
• If the signal does meet the criteria, it is checked to ensure that the rise in amplitude is not the “tail end” of a previously identified beat. For this, in astep1216, the system determines whether there has been a previous beat in the past Z milliseconds, where Z is a predetermined value preferably less than 100 milliseconds, and even more preferably less than 50 milliseconds. If there has been a recent beat, the system returns to thestep1200 for more audio input. If there has not been a recent beat, then a digital jewelry signal is used to activate a transducer. The level of transduction can be modified according to the current average amplitude which is determined in astep1208 from, in this case, the running average computed in thestep1212.
• The embodiment ofFIG. 21B provides transducer activation signals at each rapid rise in amplitude, with the activation signal modulated according to the strength of the amplitude. This will capture much of the superficial musical quality of the audio signal, but will not capture or express more fundamental patterns within the audio signal.
• FIG. 21C is a schematic flow diagram of a method to extract fundamental musical patterns from an audio signal to createDJ200 control signals. In thestep1200, the audio data is received into a buffer for calculations. In astep1220, a low pass filter is applied to remove high frequency signal. Such high frequency signals can alternatively be removed via decimation, running averages, and other means as set forth in the embodiments ofFIGS. 21A and B. As in the embodiment ofFIG. 21B, beat onsets are extracted from the audio signal in thesteps1214 and1216, and a current average amplitude is computed in astep1208.
• The amplitudes and times of the onsets of beats are placed into an array in astep1222. From this array, a musical model is created in astep1224. This model is based on the regularity of beats and beat emphasis—as seen in the amplitudes—that is independent of the beats and amplitudes in any one short section of music (corresponding, for instance, to a measure of music).
• In general, music is organized into repeating patterns, as represented in a time signature such as 3/4, 4/4, 6/8 and the like. Within each time signature, there are primary and secondary beats. In general, the downbeat to a measure is the first beat, representing the beginning of the measure. The downbeat is generally the strongest beat within a measure, but in any given measure, another beat may be given more emphasis. Indeed, there will be high amplitude beats that may not be within the time signature whatsoever (such as an eighth note in 3/4 time that is not on one of the beats). Thus, by correlating the beats to standard amplitude patterns, the output to the music model identifies the primary (down) beats, secondary beats (e.g. the third beat in 4/4 time) and the tertiary beats (e.g. the second and fourth beats in 4/4/ time).
• FIG. 21D is a schematic flow diagram of an algorithm to identify a music model, resulting in a time signature. In astep1600, the minimum repeated time interval is determined, using the array of beat amplitude andonset1222. This is, over a period of time, the shortest interval for a quarter note equivalent is determined, wherein the time signature beat frequency (i.e. the note value of the denominator of the time signature, such as 8 in 6/8) is preferably limited to between 4 per second and one every two seconds, and even more preferably limited to between 3 per second and 1.25 per second. This is considered the beat time.
• From the array of beat amplitudes andonsets1222, the average and maximum amplitudes over a time period of preferably 3-10 seconds is computed in astep1604. For the beginning of the audio signal, shorter periods of time can be used, though they will tend to give lessreliable DJ200 control signals. Indeed, in this embodiment, the initial times of an audio signal will tend to follow audio signal amplitude and changes in amplitude more than fundamental musical patterns until the patterns are elicited.
• In astep1606, the amplitude of a beat is compared with the maximum amplitude determined in thestep1604. If the beat is within a percentage threshold of the maximum amplitude, wherein the threshold is preferably 50% and more preferably 30% of the maximum amplitude, the beat is designated a primary beat in astep1612. In astep1608, the amplitude of non-primary beats is compared with the maximum amplitude determined in thestep1604. If the beat is within a percentage threshold of the maximum amplitude, wherein the threshold is preferably 75% and more preferably 50% of the maximum amplitude, and the beat is greater than a predetermined fraction of the average amplitude, wherein the fraction is preferably greater than 40% and even more preferably greater than 70% of the average beat amplitude, the beat is designated a secondary beat in astep1614. The remaining beats are denoted tertiary beats in thestep1610.
• In astep1616, the sequence of the three types of beats is compared with that of established time signatures, such as 4/4, 3/4, 6/8, 2/4 and others, each with their own preferred sequence of primary, secondary and tertiary beats, in order to determine the best fit. This best fit is identified as the time signature in astep1618.
• Returning toFIG. 21C, the channels of the DJ are pre-assigned to four different beats in astep1225. Thus, if there are four channels, each channel is given a separate assignment. With a smaller number of channels, a single channel is assigned multiple beats. Some beats can also be unassigned, thus not being represented in aDJ200 transducer output. Thus, a high jewelry signal, medium jewelry signal, low jewelry signal and an amplitude dependent signal are each assigned to a channel forDJ200 transduction.
• In astep1226, a beat determined to be a primary/down beat is assigned to ahigh jewelry signal1228. In astep1230, a beat determined to be a secondary beat is assigned to amedium jewelry signal1232. In astep1234, a beat determined to be a tertiary beat is assigned to alow jewelry signal1236. Beats which are then unassigned, and which will generally be beats that occur not within the music model of the step1224 (e.g. rapid beats not falling on beats of the time signature) are then assigned in astep1238 to an amplitude dependent (and not music model dependent)signal1240.
• It should be noted that the computations performed in the flow methods of FIGS.21A-C may take time on the order of milliseconds, such that if the computations are made in real time during the playing of music, the activation of the transducers in theDJ200 are “behind” in time relative to the audio playing of the corresponding music in theaudio unit100. This can be compensated for by carrying out the computations while the audio signal is still in buffers prior to being played in theunit100, as is described above for numerous embodiments of the present invention. Thus, signals to theDJ200 can then be made simultaneously with respect to the audio signal to which it corresponds.
• It should be noted that many of the parameters described above can conveniently be affected by manual controls either on theDJ200 or theunit100 that transmits signals to theDJ200. For example, if can be convenient for the user to be able to set, for a givenDJ200 response amplitude, the threshold audio amplitude level at which the output transducer (e.g. light transducer240) responds, or to set the output transducer amplitude corresponding to a maximum audio amplitude, or to set the frequency bands for whichdifferent DJ200 channels respond, or to set other similar parameters. The manual controls for such parameters can comprise dials, rocker switches, up/down button, voice or display menu choices, or other such controls as are convenient for users. Alternatively, these choices can be set on a computer or other user input device, for download onto theunit100 orDJ200.
• A preferable means of setting the parameters is for the parameters to be stored in a configuration file that can be altered either on theunit100, theDJ200 or a computer, so that thesame DJ200 can take on different characteristics dependent on the configuration settings within the file. The configuration settings can then be optimized for a particular situation, or set to individual preference, and be traded or sold between friends or as commercial transactions, for instance over the Internet. For a most preferable use of these configuration files, each file with its set of configurations can be considered to represent a “mode” of operation, and multiple configuration files can be set on theDJ200 or theunit100, depending on where the automatic generation of control signals is performed. The user can then select from the resident configuration files, appearing to the user as different modes, for use of his system, and can change the mode at will. This can be arranged as a series of choices on a voice or display menuing system, as a list toggled through by pressing a single button, or through other convenient user interfaces.
• Manual Generation ofDJ200 Control Signals
• In the description above, the use of filtering and digital modification of audio signals can be used to create control signals forDJ200transducers240,250, and260. In addition, manual choreography ofDJ200 signals can be accomplished. For example, buttons or other interface features (e.g. areas on a touch-screen) on theunit100 can correspond to different arrays of transducers, such as theLED arrays290 and292 ofFIG. 2A. While playing the audio signal, the user can press the buttons, where pressing of the buttons can correspond to a control signal for a transducer being ON, and otherwise the signal can be off. To aid in choreography where rapid changes in transducers are desired, the audio can be played at less than normal speed.
• FIG. 22A is a top-view diagram of anaudio unit100user interface1250, demonstrating the use of buttons to createDJ200 control signals. Theinterface1250 comprises a display screen (e.g. LCD or OLED), which can display information to the user, such as shown in FIGS.18 A-B. Standardmusic control buttons1254 for playing, stopping, pausing, and rewinding allow the user to control the audio signal musical output.Buttons1252 further control aspects of the music output, such as volume control, musical tracks, and downloading and uploading of music. The number ofbuttons1252 is conveniently three as shown, but can be more or less than three.
• In addition, buttons are provided to allow the user to inputDJ200 control signals, comprising arecord button1256, afirst channel button1258, asecond channel button1260 and athird channel button1262. Thechannel buttons1258,1260 and1262 are prominent and accessible, since the user will want to easily depress the buttons. Arecord button1256 allows the user to activate thechannel buttons1258,1260 and1262, and has a low profile (even below the nominal surface of the interface1250) so that it is not accidentally activated. The record button can serve various purposes, including recording into a permanent storage file the sequence of DJ control signals relative to music being played, or controlling the DJ transducers in realtime, synchronously with music being played on theaudio unit100.
• Pressing thebuttons1258,1260 and1262 create DJ control signals for the corresponding channels. The number of buttons is conveniently three as shown, but can also be two or four or more buttons. If a telephone is being used as theunit100, keys on the telephone keypad can alternatively be used. The channel buttons will generally be used with thumbs, and the buttons are spaced so that two of the buttons can be depressed with a single thumb, so that all three buttons can be activated with only two fingers. In is also convenient for the twosecondary buttons1260 and1262 to be spaced more closely together, as it will be a preferred mode of operation that the secondary buttons be operated together from time to time.
• To further aid in the choreography of theDJs200, a separate “keyboard” with the number of keys related to the number of possible arrays can be used. The amplitude of the corresponding transducer signal can be modified either according to the pressure on the keys, according to the length of time that a key is depressed, or according to a foot pedal.FIG. 22B is a top-view diagram of a hand-pad1270 for creating DJ control signals. The hand-pad1270 comprises a platform1271, aprimary transducer1272, asecondary transducer1274 and atertiary transducer1276. The platform1271 has a generally flat top and bottom, and can conveniently be placed on a table, or held in the user's lap. The size of the platform is such that two hands are conveniently placed across it, being preferably more than 6 inches across, and even more preferably more than 9 inches across. Thepressure transducers1272,1274 and1276 respond to pressure by creating a control signal, with said control signal preferably capturing both the time and amplitude of the pressure applied to the corresponding transducer. Theprimary transducer1272 creates a primary control signal, thesecondary transducer1274 creates a secondary control signal and thetertiary transducer1276 creates a tertiary control signal. The sizes and placements of the transducers can be varied within the spirit of the present invention, but it is convenient for theprimary transducer1272 to be larger and somewhat separate from that of theother transducers1274 and1276. In one more method of user interaction, both hands can be rapidly and alternately used to make closely spaced control signals on theprimary transducer1272. In addition, it can be convenient on occasion for the user to activate both thesecondary transducer1274 and thetertiary transducer1276 with different fingers on one hand, and thus these can be conveniently placed relatively near to one another. In general, while a single transducer will provide minimal function, it is preferable for there to be at least two transducers, and even more preferable that there be three transducers.
• The control signals can be transferred to theaudio unit100 for playing and/or storage, or to theDJ200 unit directly for playing, either wirelessly, or through wired communication. In addition, the hand-pad can also be configured to create percussive or other sounds, either directly through the incorporation of hollow chambers in the manner of a drum, or preferably by the synthesis of audio waveform signals that can be played through the audio unit100 (and otheraudio units100 participating in a cluster700), or directly through speakers within the hand-pad1270 or attached to the hand-pad1270 through wired or wireless communications. Such audible, percussive feedback can aid the user in the aesthetic creation of control signals.
• It is within the spirit of the present invention for the hand-pad to take on various sizes and configurations. For instance, it is also convenient for the hand-pad1270 to be configured for the use of index and middle fingers, being of dimensions as small as two by four inches or less. Such a hand-pad is highly portable, and can be battery powered.
• Additionally,DJ200 control signals can also be manually generated live, during broadcast at a party, for example, by a percussionist playing a set of digital drums.FIG. 22C is a schematic block diagram of a set of drums used for creating DJ control signals. The set of drums comprises fourpercussive instruments1280,1282,1284 and1286, which can include snare drums, foot drums, cymbals, foot cymbals and other percussive musical instruments, such as might be found with a contemporary musical “band”.Microphones1290 are positioned so as to receive audio input primarily from instruments to which they are associated. One microphone can furthermore be associated with multiple instruments, as with thedrums1282 and1284. Themicrophones1290 are connected with acontroller1292 that takes the input and creates DJ control signals therefrom. For example, thedrums1282 and1284 can be associated with the primary channel, thedrum1280 can be associated with the secondary channel, and thedrum1286 can be associated with the tertiary channel. The association of the microphone input with the channel can be determined in many ways. For example, the jack in thecontroller1292 to which eachmicrophone1290 attaches can correspond to a given channel. Alternatively, the user can associate the jacks in the controller to different channels, with such control being manual through a control panel with buttons or touch control displays, or even through prearranged “sets”. That is, a set is a pre-arranged configuration of associations of microphones to channels, and thus a set can be chosen with a single choice that instantiates a group of microphone-channel associations.
• In general, the inputs from themicrophones1290 will be filtered in frequency and also to enhance audio contrast. For instance, control signals can be arranged to be the highest when the low-frequency envelope is rising the quickest (i.e. the beat or sound onset). The algorithms for conversion of audio signal to DJ control signal can be pre-configured in thecontroller1292, or can be user selectable.
• It should be noted that the methods and systems of FIGS.22A-C need to synchronize the control signals so generated with the audio files to which they correspond. This can be accomplished in many ways. For example, the first control signal can be understood to correspond to the first beat within the audio file. Alternatively, theaudio unit100 or other device that is playing the audio signal to which the control signal is to correspond can send a signal to the device that is creating the control signals indicating the onset of playing of the audio file. The control signal can then be related to the time from the onset of the audio file. In addition, with regards to this synchronization, the user manually inputting the control signals will always be listening to the music during the control signal input. If the device on which control signals are being input is the same as the device that is playing the music, a control signal input cam be easily related to the sound that is currently being played by the audio output—many such devices allow information to within less than a millisecond of what sample or time within the audio files is currently being output by the audio device. With the arrangement of the control signal input device being also an audio player, close calibration of the control signals and the audio output is easily accomplished.
• DJ200 Control Signal Files
• The control signals can be in a variety of formats within the spirit of the present invention. Such formats include pairs of locations within the associated music file and the corresponding amplitudes of the various DJ channels, and pairs of locations and the amplitudes of those DJ channels which are different from before. The locations can be either time from the start of the song (e.g. in milliseconds) or in terms of sample number. If the location is given in terms of sample number, the sample rate of the music will generally also be provided, since the same song can be recorded at different sample rates, and the invariant in terms of location will generally be time from onset of the music.
• Other formats include an amplitude stream, corresponding to each DJ channel, provided in a constant stream with a fixed sample rate, which may be equal to or different from that of the corresponding music file. This format can be stored, for example, as additional channels into the music file, such that one channel corresponds to monoaural sound, two channels correspond to stereo sound, three channels correspond to stereo sound and one channel of control signals, and additional channels correspond to stereo sound plus additional channels of DJ control signals. Another arrangement is to allow for only a small number of states of the transduction in the control signal, so that multiple channels of control signal can be multiplexed into a single transmitted channel for storage and transmission with the audio signal. For example, if the audio is stored as a 16-bit signal, 3 channels of 5bit DJ200 control signal could be stored in a single channel along side the one or two audio channels normally used.
• It should be appreciated that these different control signal storage formats are largely interchangeable. For instance, as described above, control signals can be stored as if they are additional audio channels within a music file, but then be extracted from the file for separate transfer (e.g. over the Internet), and then be reintegrated into an audio file at the destination location.
• It should be appreciated that there are a number of means by whichDJ200 control signals can be generated, either automatically or manually, and can include the use of devices other than theunit100 that can have sophisticated digital or analog filtering and modification hardware and software. The control signals so created can be stored in files that are associated with the music files (e.g. MP3) that the control signals are meant to accompany. To aid in their distribution, particularly in reference to limitations on the commercial and private distribution of the corresponding music files, the signal files will generally be separate from the music files, and transferable betweenunits100 either through inter-unit communication mediated by the inter-unit transmitter/receiver110, or alternatively through computers or computer networks to which theunit100 can be connected.
• The audio signals and the DJ control signals should also be well synchronized during playback.FIG. 23 is a schematic block flow diagram of the synchronized playback of an audio signal file with a DJ control signal file, using transmission of both audio and control signal information. For purposes of convenience in discussion, the audio signal file will be called a “song file” and the “control signal file” will be called a “dance file.” In astep1300, the user is provided a list of song files for display, preferably on thedisplay1170. In astep1302, the user then selects a song from the display to play. In astep1304, the dance files that are associated with the selected song file from thestep1302 are displayed for the user. These song files can be either locally resident on theunit100, or can alternatively be present on otheraudio units100 to which theaudio unit100 is connected, as in a cluster, or can alternatively be on the Internet, if theaudio unit100 is connected to the Internet. If there is a dance file that has been previously preferred in association with the song file, this file can be more prominently displayed than other associated dance files.
• In astep1306, the user selects the dance file to play along with the song file. This association is stored in a local database of song file/dance file associations in astep1307, to be later used in asubsequent step1304, should such an association not have been previously made, or if the preferred association is different from the previously preferred association. If the dance file is not locally resident, it can be copied to theaudio unit100 to ensure that the dance file is available throughout the duration of the song file playback.
• In astep1308, a timer is initialized at the beginning of the song file playback. In thestep1310, the song file is played on thelocal unit100, and is also streamed to theother units100 within the cluster700. The corresponding DJ control signal accompanies the streaming song, either multiplexed within the song file audio signal, on another streaming socket, or through other communications (e.g. a TCP socket) channels between the two units. In astep1312, the time advances along with the playback of the music. In astep1314, this timer information is used to obtain current control signals from the dance file—that is, the dance file is arranged so that at each moment, the status of the different transducer channels can be determined. The control signals to be streamed along with the song file information can be either the current status of each transducer, or alternatively, can only send changes from the current transducer state.
• The matching of the files in the database of song file and dance file associations of thestep1307 can be performed both within a machine, but also over a local or wide area network. In such cases, the association can either be external to the file—that is, using the name of the file, that is available the normal system file routines—or can use information internal to one or both files. For example, the dance file can have stored within it a reference to the song to which it is associated, either as the name of the song file, the name and/or other characteristics of the song (such as the recording artist, year of publication, music publisher) or alternatively as a numerical or alphanumerical identifier associated with the song. Then, given a song file, the relationship of the dance file with the song file can be easily determined.
• For ease in creating an association, it is convenient for the names of the song files and the associated dance files to have a relationship with one another that is easily understood by casual users. For example, given a song file with the name “oops.mp3”, it is convenient for an associated dance file to share the same root (in this case “oops”) with a different extension, creating for example the dance file name “oops.dnc”. Because of the multiplicity of dance files that will often be associated with a particular song file, the root itself can be extended to allow for either a numerical or descriptive filename, which can be preferably done in conjunction with a known punctuation mark to separate the song file root from the dance file description, such as the file names “oops.david2.dnc” or “oops$wild.dnc”. It is preferable to use a punctuation mark that is allowed within a range of different operating systems.
• Dance files can be stored on the Internet or other wide area network in a store for access by users who want dance files associated with a particular song file. In such case, if the storage is through the root of the filename, the user, requesting dance files corresponding to “oops.mps” would then be returned the names of related files such as “oops$wild.dnc”. If the dance file internally carries the relationship with “oops.mps” as described above, either through the name or other characteristics, or alternatively, through a numerical or alphanumerical identifier, it is preferable to store the information in a database on the storage computer orunit100, so that it is not necessary to open the file each time for perusal of the dance file information. Thus, if the music file has a substantially unique identifier associated with it internally, it is also useful for the dance file to also have the same identifier associated internally as well. In such case, the identifier is conveniently used to reference both files within a database.
• In operation, a remote user would request a dance file for a particular song file by providing the name of the song file, along possibly with other information about the song file, which could include the name of the choreographer, the number of channels ofDJ200 transduction, the specific brand or type ofDJ200, or other information. The database would then return a listing of the various dance file that met the criteria requested. The remote user would then choose one or more of the files to download to the remote computer, and then the database would retrieve the dance files from storage and then transmits the dance file over the wide area network. On the remote computer orunit100, the dance file would become associated with the corresponding song file through means such as naming the dance file appropriately or making an association between the song file and the dance file in a database or indexing file. Alternatively, the dance file can be integrated into the song file as mentioned elsewhere within this specification.
• It can be useful to preview a dance file for its desirability or suitability. Since the dance files can be retrieved from a wide area network such as the Internet, it is convenient for such an emulator to operate on a computer that may not be portable or have the proper transmitter that allows communications with aDJ200. In such case, it is preferable to have an emulator which places an image or drawing of aDJ200 on the screen, and which is provided the name of a song file and a dance file, and which then plays the song file through the audio of the computer and displays appropriate images or drawings of transducers being activated within the emulator image or drawing. The characteristics of theDJ200 being emulated (e.g. colors of lights, frequency responses, levels of illumination, arrangement of lights, response to amplitude, etc.) Can be simulated by a number of means. For example, the user can move slider controls, set checkboxes and radio boxes, enter numerical values, click-and-drag icons and use other standard user interface controls to make theDJ200 operate as desired. Alternatively, manufacturers of DJ200s can create configuration files (including, for example, bitmaps of photos of the actual DJ200) that can be downloaded for this purpose (and which can also be used by prospective purchasers to view the “virtual” operation of theDJ200 prior to purchase, for example, through an Internet merchant). The configuration files would contain the information necessary for the emulator to properly display the operation of the specific DJ.
• Alternatively, as described above, the dance file information can be stored within the song file as, for example, another channel in place of an audio channel, or alternatively within MP3 header or other file information. In such case, thestep1307 would have the alternative function of looking through song files to find the song file with the particular desired embedded dance file within.
• In addition to sending dance files from computers tounits100 or betweenunits100, the dance files can be streamed fromunit100 tounit100 through the normal unit-to-unit communications, in the manners described above for audio communications. This is particularly convenient given thatDJ200 displays can be used to show group identification, and such displays can be more effective if the DJs for each user are nearly identical (which might not be the case if the users were using, for example, different dance files). The dance file control signal information can be transmitted in a variety of ways, including multiplexing the control signals into the same packets as the audio information as if it were a different audio channel, alternating packets of control signals with packets of the audio information, or broadcasting control signals on a different UDP socket as the audio. Alternatively, if the receiving unit has a copy of the dance file corresponding to the song file being transferred by unit-to-unit communication, the receiving unit can determine the current time being played, and to extract from the local dance file the control signals for the receivingunit DJ200.
• It should be known that most streaming protocols have relatively small data packets that are communicated, due to the fact that reception at the source is not guaranteed and it is not desirable to lose a large amount of information in any one stream. Thus, it is possible with smaller transmission buffers and higher data rates to send a single DJ control signal in each transmission. For example, with a buffer size of 600 bytes, and an audio rate of 22,050 Hz with two single byte channels, each transmission covers only about 12 milliseconds, and any signal would therefore be at most 13 milliseconds from its correct time. Alternatively, each control signal can be accompanied by an offset in time from the beginning of the transmitted audio signal. Also, the time or packet number of each transmission buffer can be sent, as well as the time or packet number of the DJ audio signals, so that theaudio unit100 can compute the proper offset.
Stationary Transducers
• DJs200 that have been previously described are portable devices, usually associated with a particular user andunit100.FIGS. 5A and 5B indicate the ways in whichDJs200 associated with multiple users can be controlled by asingle unit100.
• It is also convenient for transducers to be non-portable and stationary. Consider, for example, a user who is at home listening to music. Instead of aDJ200 worn by the user, the user can alternatively have a bank of lights or other transducers in fixed locations through the room that operate under the same or similar control signals as to which DJs respond. Such fixed transducers can operate at far higher power thanportable DJs200, and can each incorporate a large number of separate transducers.
• Furthermore, in a party, concert or other large social gathering, the effects of portable DJs worn by guests can be supplemented by large transducers that are generally perceptible by most guests. For example, such transducers can include spark or smoke generators, strobe lights, laser painters, arrays of lights similar to Christmas light strings, or mechanical devices with visible (e.g. a flag waving device) or tactile effects (e.g. a machine that pounds the floor). In general, transducers for large gatherings will not communicate with aunit100, but will be directed by a wide-area broadcast unit360, as inFIG. 5B.
• Because of the large area over which such stationary transducers can operate, the communications between theunit100 and the stationary transducers can be through wired rather than wireless transmission. Furthermore, there can be mixed communication, such as wireless transmission of control signals from aportable unit100 to a stationary receiver, and thence wired transmission to one or multiple transducers.
Modular Configurations
• In the embodiments above, theaudio player130 is directly integrated with the inter-unit and unit-to-DJ communications. This requires both a re-engineering of existing audio players (e.g. CD, MP3, MO and cassette players), and furthermore does not allow the communications functionality to be reused between players.
• An alternative embodiment of the present invention is to place the communications functions external to the audio playing functions, and to adjustably connect the two via the audio output port of the audio player.FIG. 12A is a schematic diagram of amodular audio unit132.Audio player131 is a conventional audio player (e.g. CD or MP3 player) without the functionality of the present invention. Analog audio output is sent viaaudio output port136 through thecable134 to theaudio input port138 of themodular audio unit132. Themodular audio unit132 comprises the inter-unit transmitter/receiver110 and theDJ transmitter120, which can send and receive inter-unit and unit-to-DJ communications in a manner similar to anaudio unit100. Aswitch144 chooses between audio signals from theaudio player131 and from the inter-unit transmitter/receiver110 for output to theoutput audio port142 to theearphone901 via cable146 (theearphone901 can also be a wireless earphone, wherein theoutput port142 can be a wireless transmitter, which can also be a DJ transmitter120). A convenient configuration for theswitch144 is a three way switch. In an intermediate position, theunit132 acts simply as a pass-through, in which output from theaudio player131 is conveyed directly to theearphone901, and the transmitter/receiver functions of theunit132 do not operate. In another position, theunit132 operates as a receiver, and audio from the inter-unit transmitter/receiver110 is conveyed to theearphone901.
• When the combined system operates as abroadcast unit710, audio input from theaudio unit131 is directed to the inter-unit transmitter/receiver110 for transmission to receiveunits730, as well as for output to the earphone901 (which can be direct to theearphone901 through the switch, or indirectly through the inter-unit transmitter/receiver110).
• When the combined system operates as a conventional audio player, the switch directs audio signals from theinput port138 directly through to theoutput port142. In this mode of operation, it can be arranged for the audio output to traverse themodular audio unit132 without the unit being powered up. In case there is a transmission delay to the receiveunit730 such that audio played locally through theearphone901 and audio played remotely on the receiveunit730 are not in synchrony, the system can incorporate a time delay in theoutput port142 such that the local and remote audio output play with a common time delay, and are thus in synchrony.
• When the combined system operates as areceiver unit730, audio input from theinput port138 is ignored, and signals to the audio output port are delivered solely through the inter-unit transmitter/receiver110.
• It is convenient for themodular audio unit132 to be able to operate independently of the associatedaudio player131. In such a case, theunit132 must have an independent energy store, such as one or more batteries, which can be rechargeable. In that case, theunit132 has no audio signals locally to listen to through theearphone901 or to transmit over the transmitter/receiver110. However, theunit132 can in that case receive external audio signals sent byother units132 orunits100 for listening.
• Theaudio player131 can be placed in a backpack, purse, or other relatively inaccessible storage location, while the modular audio unit is, like a “remote control”, accessible for interaction with other users.
Video
• While theunits100 described above have comprisedaudio players130, within the spirit of the present invention, such units can also comprise video or audio/visual players (both of which are referred to below as video players). Such video players would be used generally for different entertainment and educational purposes, not limited to films, television, industrial training and music videos. Such video enabled units can operate similarly to audio units, including the capability of sharing video signals, synchronously played, with nearby units through inter-unit communication, as well as the use of DJ's that can produce human-perceptible signals (such as light transduction for accompaniment of audio signals in music videos). It should be noted, however, that there is a larger bandwidth requirement for the inter-unit transmitter/receiver110 for the communication of video signals as compared with audio signals. In the case of shared video, wire connections (e.g. FireWire) between two units can allow simultaneous viewing of a single video signal.
• In addition, text, including language-selectable closed caption and video subtitling, can accompany such video, as well as chat or dubbing to allow the superposition of audio over the audio normally accompanying such video.
Music Distribution Using Audio Units
• The music industry is suffering from reduced sales due to the advent of Internet-based music file sharing; in addition, the manufacturers of personal audio devices are bringing to market audio devices that can wirelessly transfer music files between the devices. Such sharing-enabled devices could significantly reduce the sales of music. Audio units of the present invention, however, can be used to provide new means of music distribution and thereby increase the sales of music.
• FIG. 25 is a schematic flow diagram indicating music sharing using audio devices, providing new means of distributing music to customers. Three entities are involved in the transactions—the DJ (operating a broadcast unit710), the cluster member (operating a receive unit730), and the music distributor, and their actions are tracked in separate columns. In this case, the term DJ is used to indicate the person operating abroadcast unit710, and has no meaning with respect to aDJ unit200. Indeed, theDJ unit200 is a part of the system only inasmuch as it provides for heightened pleasure of the DJ and the member in enhancing their experience of the music. For the rest of this section, DJ will refer specifically to the person operating thebroadcast unit710.
• In afirst step1340, the DJ registers with the distributor, who places information about the DJ into a database in astep1342. Part of this information is a DJ identifier (the DJ ID), which is unique to the DJ, and which DJ ID is provided to the DJ as part of the registration process. This ID is stored in theunit100 for later retrieval. The DJ at some later time broadcasts music of the type distributed by the distributor, in astep1344. The broadcast of the music by the DJ can be adventitious (that is, without respect to the prior registration of the DJ with the distributor), or the distributor can provide the music to the DJ either free of charge, at a reduced charge, or free of charge for a limited period of time.
• In astep1346, the member becomes a part of the cluster700 of which the DJ is the broadcaster broadcasting the distributor's music, and has thereby an opportunity to listen to the music. Along with the transfer of the audio signal of the music, in astep1348, the DJ can send information about the song, which can include a numerical identifier of the music or album from which the music is derived. Furthermore, the DJ ID is provided to the member, and is associated with the music ID and stored in a database on themember unit100 in astep1350. In order to prevent this database from becoming too sizable, music IDs and DJ IDs can be purged from it on a regular basis (for example, IDs which are older than 60 or 120 days can be removed).
• If the member requests purchase of the music from the distributor in astep1352, in astep1354, the distributor stores the member information, the music ID, and the DJ ID associated with the music (i.e. the person who introduced the member to the music). The distributor then completes the transaction with the member, providing a copy of the music in exchange for money, in astep1356. As the member receives the music copy, he also becomes registered as a DJ as well in astep1358. Thus, if the member now becomes the DJ of his own cluster, and introduces people to this music, he will also be known to the distributor as an introducer of the music.
• In astep1360, the distributor provides points to the DJ who introduced the member to the music and facilitated the sale of the music. In astep1362, the DJ accumulates points related to the sale of the music to the member, as well as points related to the sale of other music to other members. These points can at that point or later be redeemed for money, discounted music, free music, gifts, access to restricted activities (e.g. seats at a concert) or other such real or virtual objects of value to the DJ.
• In astep1364, the DJ is optionally further linked to the music and member for whom he has received points. If this member introduces the music to yet other members, who are induced to buy the music from the distributor, the DJ is further awarded points in astep1366, given that the “chain” of members introduced directly or indirectly to the music includes the original DJ.
• This set of interactions does not decrease music sales as does file sharing, but rather increases sales of music, as the DJ has incentives to encourage others to buy the music, and the offering of the music by the DJ through his broadcasts introduces music to people who may not have already had the opportunity to hear the music.
• FIG. 31 contains tables of DJ, song and transaction information according to the methods ofFIG. 25. A USER table1810 comprises information about the USER, which can include the name of the person (Alfred Newman), their nickname/handle (“WhatMeWorry”), their email address (AEN@mad.com), and the machine ID of their unit100 (BIB25C0). This information is permanently stored in theaudio unit100. A second set of information relates to music that the USER has heard while in other clusters700 that the USER liked, and which is indicated as the USER's “wish list”. This set of information includes a unique ID associated with the song (or other music or audio signal), which is transmitted by thebroadcast unit710 of the cluster700. This information can alternatively or additionally include other information about the music, such as an album name, an artist name, a track number, or other such information that can uniquely identify the music of interest.
• Along with each song ID is a DJ identifier, indicating the unique ID associated with the DJ who introduced the desired music to the USER. Additionally or alternatively, the information can comprise the DJ's email address, personal nickname/handle, name, or other uniquely identifying information.
• The Wish List can either be permanent, or it can be that each song entry is dated, and that after a predetermined amount of time, which can be set by the user, the songs that are still on the Wish List are removed. It is also convenient that songs that are purchased according to the methods of the present invention, such asFIG. 25, are also removed from the list automatically.
• A DISTRIBUTOR table1812 comprises information about purchases made by USERS with the DISTRIBUTOR. The table1812 has numerous records keyed according to unique USER identifiers, which in this case is the MAC ID of theunit100. A single record from the table is provided, of which there can be hundreds of thousands or millions of such records stored.
• The record can include contact information about the USER, including name, email address, or other business related information such as credit card number. In addition, each record comprises a list of all of the songs known to have been purchased through the DISTRIBUTOR, as identified by a unique song ID. In addition, the DJ associated with the purchase of the given song by the USER is also noted. This information was previously transmitted from the USER table1810, which includes the associated DJ identifier along with the song identifier, at the time of purchase of the song. This association allows the DISTRIBUTOR to compensate the DJ for his part in introducing the USER to the song.
• It should also be noted that such an arrangement of information allows the compensation, if desired, of the individual who introduced the DJ to the song, prior to the DJ introducing the USER to the song. For example, when the user purchased the song with song ID 230871C40, points were credited with the DJ whose ID is 42897DD. Looking in the record for the DJ 42897DD, one can determine whether there is another individual (DJ) associated with the purchase of the song 230871C40 by the DJ. If so, that individual can also receive compensation for the purchase of the song by the USER.
Use of Internet Connections
• It is within the teachings of the present invention to allow normal Internet connections of theaudio unit100 with non-mobile devices connected with the Internet.FIG. 29A is a schematic block diagram of the connection of an Internet-enabledaudio unit100 with an Internet device through theInternet cloud1708, using anInternet access point1704. An Internet-enabledaudio unit1700, unit A, is wirelessly connected to anaudio unit100, denoted unit B, as members in a cluster700. The dashed line connecting the two units A and B indicates that the connection is wireless, whereas the solid connecting lines indicate wired connections. The unit A is connected to awireless access point1704, such as an 802.11 access point, which is connected to anInternet device1706 via wired connections through theInternet cloud1708.
• FIG. 29B is a schematic block diagram of the connection of an Internet-enabledaudio unit1702 with an Internet device through the Internet cloud, with anaudio unit1702 directly connected to theInternet cloud1708. In this case theaudio unit1702 is capable of directly connecting to theInternet cloud1708, and thence to theInternet device1706, through a wired connection. This could be through a high speed connection (such as a twisted wire Ethernet connection) or through a lower speed connection (e.g. a serial port connection, or a dial-up modem).
• The connection of theunit1700 orunit1702 is illustrated inFIG. 30, tables of ratings ofaudio unit100 users. As described above, members of a cluster can decide whether or not to admit a new member to the cluster using a variety of automatic or manual methods. One method of determining the suitability of a user to become a member of the cluster700 is to determine the user's ratings by members of other clusters to which the user has previously been a member. In this case, theInternet device1706 is a computer hosting a database, which can be queried and to which information can be supplied by the unit A (either1700 or1702). On theInternet device1706 are stored ratings ofunits100, as indicated by the table1802. The left hand column is the primary key of the database, and is a unique identifier associated with eachunit100. This ID can be a numerical MAC ID, associated with the hardware and software of eachunit100, a unique nickname or word handle (e.g. “Jen412smash”) associated with each audio unit user, or other such unique identifier.
• The second and third columns, indicated as numbers with dollar signs, are the total summed positive ratings (column two) and the negative ratings (column three) registered with each user by another member of a cluster700 with which the user has been associated, and in which the user was operating thebroadcast unit710. This rating can, for example, reflect the perceived quality of music provided by the user. The fourth and fifth columns are the total, summed ratings of the user by other members of clusters700 with which the user has been associated, in which the user was the operator of a receiveunit730. This rating can, for example, indicate the good spirits, friendliness, dress or other characteristics of the user as perceived by other members of the cluster. The sixth column indicates the largest cluster700 for which the user has been the broadcaster. This is a good indicator of a broadcaster's popularity, since a poor or unpopular broadcaster would not be able to attract a large group of members for a cluster.
• There are many other characteristics that can be stored in such a database, and can also include IDs of other members of groups with which the user has been associated (so that members can accept new members who have been associated with friends of those in the cluster), specific music that the user has played (in order to determine musical compatibility), information on the individuals making each rating (in order to determine rating reliability), and gradations of ratings (rather than simply a positive or negative response).
• The cluster members can access the ratings of the user requesting membership in the cluster700 in order to determine their desirability and suitability. This would require a connection with theInternet device1706 at the time that the user was requesting to join, and would preferably involve a wireless connection through an access point, as inFIG. 29A. The information from the database on thedevice1706 can either be displayed to the members of the cluster700, or can be used by an automatic algorithm to determine whether the person can join.
• The table1800 represents the ratings of a cluster700 of 5 total members (comprising a broadcaster with ID 12089AD, and four additional members with IDs E1239AC, F105AA3, BIB25C0, and ED5491B). The ratings are supplied by ED5491B (whose ID is preceded by a zero), and then specific ratings of each member are made. The DJ is indicated by a dollar sign preceding his ID. These ratings can be made by putting the nicknames/handles of the cluster members on a screen, and allowing the member to indicate positive or negative ratings by pressing one of two buttons. A plus in the first column indicates a positive response, and a minus sign indicates a negative response. These ratings can then be sent during either wired communications directly to theInternet device1706 or via theaccess point1704. It should be noted that the ratings, once made, can be stored on theunit1700 or1702 indefinitely, until connection with theInternet cloud1708 can be made. As indicated by the arrow, the information for BIB25C0 can be added to the table1802—in this case, by incrementing the value in the fourth column (a positive rating for a user who is not the broadcaster).
• Other applications of connections toInternet devices1706 include exchanging (via uploading and downloading) dance files with distant individuals, and obtaining music via downloading , which can include transactions with distributors similar to that seen inFIG. 25. Such connections also allow the integration of other connectivity, such as telephone and messaging capabilities, expanding the usefulness and attractiveness ofaudio units100.
Many Embodiments Within the Spirit of the Present Invention
• It should be apparent to one skilled in the art that the above-mentioned embodiments are merely illustrations of a few of the many possible specific embodiments of the present invention. For example, the elements of aunit100, including the inter-unit transmitter/receiver110 protocol and hardware, theDJ transmitter120 and theaudio player130 can be chosen from a range of available technologies, and can be combined with user interface elements (keyboards, keypads, touch screens, and cursor buttons, without significantly affecting the operation of theunit100. Furthermore, many different transducers can be combined intoDJs200, which can further comprise many decorative and functional pieces (e.g. belt clasps, functional watches, microphones, or wedding rings) within the spirit of the present invention. Indeed, theunit100, itself, can comprisetransducers240,250 or260.
• It should also be appreciated that communications protocols provide a nearly uncountable number of arrangements of communications links between units in a cluster, that the links can be of mixed software protocols (e.g. comprising both TCP and UDP protocols, and even non-IP protocols) over a variety of hardware formats, including DECT, Bluetooth, 802.11 a, b, and g, Ultra-Wideband, 3G/GPRS, and i-Beans, and that communications can include not only digital but also analog communications modes. Furthermore, communications between audio units and digital jewelry can further comprise analog and digital communications, and a variety of protocols (both customized as well as well-established IP protocols).
• It is important, as well, to note that the inter-unit communication and the unit-to-DJ communication can operate and provide significant benefits independently of one another. For example, members listening to music together gain the benefits of music sharing, even without the use ofDJs200. Alternatively, an individual's appreciation of music and personal expression can be augmented through use of aDJ200, even in the absence of music sharing. However, the combination of music sharing along with enhanced personal expression through aDJ200 provides a synergistic benefit to all members sharing the music.
• Numerous and varied other arrangements can be readily devised by those skilled in the art without departing from the spirit and scope of the invention. Moreover, all statements herein reciting principles, aspects and embodiments of the present invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future, i.e. any elements developed that perform the same function, regardless of structure.
• In the specification hereof any element expressed as a means for performing a specified function is intended to encompass any way of performing that function. The invention as defined by such specification resides in the fact that the functionalities provided by the various recited means are combined and brought together in the manner which the specification calls for. Applicant thus regards any means which can provide those functionalities as equivalent as those shown herein.

Claims (26)

1. A method for providing a first member player of a music sharing cluster with dynamic information from a second member player about an audio selection, comprising:

playing the audio selection on the first member player;

broadcasting the audio selection from the first member player to the second member player;

playing the broadcast audio selection on the second member player;

transferring dynamic information from the second member player to the first member player; and

presenting the dynamic information on the first member player.

2. The method ofclaim 1, wherein the dynamic information comprises information selected from the group consisting of positive comments about the audio selection, negative comments about the audio selection, audio selection requests and requests for becoming the cluster broadcaster.

3. The method ofclaim 1, wherein the step of broadcasting uses an Internet protocol.

4. The method ofclaim 1 wherein the step of presenting uses one or more of text messages, visual icons, artificial voice synthesis, visible light modulation and voice communication.

5. The method ofclaim 1 further comprising the step of inputting of dynamic information onto the second member player by the user of the second member player.

6. The method ofclaim 5 wherein the step of inputting uses one of a microphone, a keyboard, a stylus, or a selectable icon.

7. The method ofclaim 1 wherein the step of broadcasting uses one of AM radio, FM radio or digital radio.

8. The method ofclaim 1 wherein the step of broadcasting uses telephony.

9. The method ofclaim 1 wherein the member players of the cluster are mobile.

10. The method ofclaim 1 wherein the playing on the first member player and the playing on the second broadcast member is synchronous.

11. An audio player for sharing dynamic information within a cluster of audio players, comprising:

means for playing an audio selection on a first member player;

means for broadcasting the audio selection from the first member player to a second member player;

means for playing the broadcast audio selection on the second member player;

means for transferring dynamic information from the second member player to the first member player; and

means for presenting the dynamic information on the first member player.

12. An audio player as inclaim 11 wherein dynamic information comprises one or more of positive comments about the audio selection, negative comments about the audio selection, audio selection requests, and requests for becoming the cluster broadcaster.

13. An audio player as inclaim 11 wherein the means for broadcasting uses an Internet protocol.

14. An audio player as inclaim 11, wherein the means for presenting the dynamic information comprises one of test messages, visual icons artificial voice synthesis, visible light modulation or voice communication.

15. An audio device for playing audio entertainment coincident with voice communication, comprising:

a speaker for outputting sound;

a player for playing the audio entertainment through the speaker, wherein the audio entertainment has an amplitude of sound;

at least one interunit transmitter/receiver for receiving voice communication from another audio device wherein the voice communication is output through the speaker, and wherein the voice communication has an amplitude of sound; and

an amplitude control for separately controlling the amplitude of sound from the player or the voice communication from the interunit transmitter/receiver through the speaker or the ratio of the amplitude of sound from the player to the amplitude of sound through the communications received by the interunit transmitter/receiver that is output by the speaker.

16. The audio device as claimed inclaim 15, wherein the device comprises a telephone.

17. The audio device as claimed inclaim 15, wherein the device is mobile.

18. The audio device as claimed inclaim 15, wherein the interunit transmitter/receiver uses TCP sockets.

19. The audio device as claimed inclaim 15, wherein the interunit transmitter/receiver uses a link layer with a protocol selected from the group consisting of 802.11, Bluetooth, ultrawideband, HiperLAN and WDCT.

20. A method for members of a music sharing cluster to make a request, comprising:

transmitting an audio selection from a first audio player to a second audio player;

playing the transmitted audio selection on the second audio player;

inputting a request on the second audio player;

transferring the request from the second audio player to the first audio player; and

displaying the request on the first audio player.

21. A method ofclaim 20 wherein the request comprises a request to become the broadcaster for the cluster or a request to hear an audio selection.

22. A method ofclaim 20 wherein displaying is selected from the group consisting of displaying on a screen or providing sound communication.

23. A method to maintain physical proximity between audio devices in an audio sharing cluster, comprising:

transmitting an audio signal from a first audio device to a second audio device;

monitoring the signal reception received by the second audio device; and

communicating the monitored signal reception to the first audio device;

wherein a user of the first audio device uses the communicated signal reception to maintain physical proximity to the second audio device.

24. The method ofclaim 23 wherein the second audio device communicates with the audio device at a predetermined interval.

25. The method ofclaim 23 wherein monitored signal reception is selected from the group consisting of signal presence and signal strength.

26. The method ofclaim 23 further comprising alerting the user of the first audio device if the signal reception by the second audio device is inadequate.

Images