US20050137877A1 - Method and system for enabling a device function of a vehicle - Google Patents

Abstract

The current invention provides a method and system for enabling a device function of a vehicle. A speech input stream is received at a telematics unit. A speech input context is determined for the received speech input stream. The received speech input stream is processed based on the determination and the device function of the vehicle is enabled responsive to the processed speech input stream. A vehicle device in control of the enabled device function of the vehicle is directed based on the processed speech input stream. A computer usable medium with suitable computer program code is employed for enabling a device function of a vehicle.

Description

FIELD OF THE INVENTION
• This invention relates generally to telematics systems. In particular the invention relates to a method and system for enabling a device function of a vehicle.
BACKGROUND OF THE INVENTION
• One of the fastest growing areas of communications technology is related to automobile network solutions. The demand and potential for wireless vehicle communication, networking and diagnostic services have recently increased. Although many vehicles on the road today have limited wireless communication functions, such as unlocking a door and setting or disabling a car alarm, new vehicles offer additional wireless communication systems that help personalize comfort settings, run maintenance and diagnostic functions, place telephone calls, access call-center information, update controller systems, determine vehicle location, assist in tracking vehicle after a theft of the vehicle and provide other vehicle-related services. Drivers can call telematics call centers and receive navigational, concierge, emergency, and location services, as well as other specialized help such as locating the geographical position of a stolen vehicle and honking the horn of a vehicle when the owner cannot locate it in a large parking garage. Telematics service providers can offer enhanced telematics services by supplying a subscriber with a digital handset.
• With speech recognition available in today's vehicles a driver can control devices within the vehicle without removing their hands from the steering wheel. Drivers receive various forms of information while operating a vehicle such as phone numbers or destination addresses. While a driver is on the road, it is not convenient for them to record the information and then input that information to a vehicle device such as an in-vehicle phone or navigation system. Information of interest to a driver can be a part of a conversation the driver has with another person and not in a format directly usable by a vehicle device.
• The driver can receive a business address as part of a conversation with a person at the business. To use that address with the vehicles navigation system, the driver must remember or record the address, enable the navigation system and input the address to the navigation system. This requirement is both an inconvenience for the driver and a limitation that decreases the driver's satisfaction with the capabilities of the navigation system.
• It is desirable therefore, to provide a method and system for enabling a device function of a vehicle, that overcomes the challenges and obstacles described above.
SUMMARY OF THE INVENTION
• The current invention provides a method for enabling a device function of a vehicle. A speech input stream is received at a telematics unit. A speech input context is determined for the received speech input stream. The received speech input stream is processed based on the determination and the device function of the vehicle is enabled responsive to the processed speech input stream. The method further comprises directing a vehicle device in control of the device function based on the processed speech input stream.
• Another aspect of the current invention provides a computer usable medium including computer program code for enabling a device function of a vehicle. The computer usable medium comprises: computer program code for receiving a speech input stream at a telematics unit; computer program code for determining a speech input context for the received speech input stream; computer program code for processing the received speech input stream based on the determination; and computer program code for enabling the device function of the vehicle responsive to the processed speech input stream. The computer usable medium further comprises computer program code for directing a vehicle device in control of the device function based on the processed speech input stream.
• Another aspect of the current invention provides a system for enabling a device function of a vehicle. The system comprises: means for receiving a speech input stream at a telematics unit; means for determining a speech input context for the received speech input stream; means for processing the received speech input stream based on the determination; and means for enabling the device function of the vehicle responsive to the processed speech input stream. The system further comprises means for directing a vehicle device in control of the device function based on the processed speech input stream.
• The aforementioned and other features and advantages of the invention will become further apparent from the following detailed description of the presently preferred embodiment, read in conjunction with the accompanying drawings. The detailed description and drawings are merely illustrative of the invention rather than limiting, the scope of the invention being defined by the appended claims and equivalents thereof.
BRIEF DESCRIPTION OF THE DRAWINGS
• FIG. 1 is a schematic diagram of a system for enabling a device function of a vehicle in accordance with one embodiment of the current invention;
• FIG. 2 is a flow diagram of a method for enabling a device function of a vehicle in accordance with one embodiment of the current invention;
• FIG.3 is a flow diagram detailing the step of determining the speech input context atblock220 ofFIG.2;
• FIG. 4 is a flow diagram detailing the step of processing the received speech input stream atblock230 ofFIG. 2; and
• FIG. 5 is a flow diagram detailing the step enabling the device function of the vehicle atblock240 ofFIG. 2.
DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS
• FIG. 1 is a schematic diagram of a system for enabling a device function of a vehicle in accordance with one embodiment of the current invention at100. The system for enabling a device function of a vehicle at100 comprises: amobile vehicle110, atelematics unit120, one or morewireless carrier systems140, or one or moresatellite carrier systems141, one ormore communication networks142, and one ormore call centers180.Mobile vehicle110 is a vehicle such as a car or truck equipped with suitable hardware and software for transmitting and receiving speech and data communications.Vehicle110 has amultimedia system118 having one ormore speakers117.
• In one embodiment of the invention, telematics unit comprises: a digital signal processor (DSP)122 connected to awireless modem124; a global positioning system (GPS) receiver orGPS unit126; an in-vehicle memory128; amicrophone130; one ormore speakers132; an embedded or in-vehicle phone134 or anemail access appliance136; and adisplay138. DSP122 is also referred to as a microcontroller, controller, host processor, ASIC, or vehicle communications processor.GPS unit126 provides longitude and latitude coordinates of the vehicle, as well as a time stamp and a date stamp. In-vehicle phone134 is an analog, digital, dual-mode, dual-band, multi-mode or multi-band cellular phone.
• Telematicsunit120 can store a processed speech input stream, GPS location data, and other data files in in-vehicle memory128. Telematicsunit120 can set or reset calling-state indicators and can enable or disable various cellular-phone functions, telematics-unit functions and vehicle functions when directed by program code running on DSP122. Telematicsunit120 can send and receive over-the-air messages using, for example, a pseudo-standard air-interface function or other proprietary and non-proprietary communication links.
• DSP122 executes various computer programs and computer program code, withintelematics unit120, which control programming and operational modes of electronic and mechanical systems. DSP122 controls communications betweentelematics unit120,wireless carrier system140 orsatellite carrier system141 andcall center180. A speech-recognition engine119, which can translate human speech input throughmicrophone130 to digital signals used to control functions of telematics unit, is installed intelematics unit120. The interface totelematics unit120 includes one or more buttons (not shown) ontelematics unit120, onmultimedia system118, or on an associated keyboard or keypad that are also used to control functions of telematics unit. A text tospeech synthesizer121 can convert text strings to audible messages that are played throughspeaker132 oftelematics unit120 or throughspeakers117 ofmultimedia system118.
• Speech recognition engine119 and buttons are used to activate and control various functions oftelematics unit120. For example, programming of in-vehicle phone134 is controlled with verbal commands that are translated by speech-recognition software executed by DSP122. Alternatively, pushing buttons on interface oftelematics unit120 or on in-vehicle phone134 is used to program in-vehicle phone134. In another embodiment, the interface totelematics unit120 includes other forms of preference and data entry including touch-screens, wired or wireless keypad remotes, or other wirelessly connected devices such as Bluetooth-enabled devices or 802.11-enabled devices.
• In one embodiment of the current invention,speech recognition engine119 comprises a configurable listener automaton111 that receives a speech input stream and processes the speech input stream according to a set of rules and structures defined in a domain specific actuator. The listener automaton111 writes the processed speech input stream to an activation cache that is a portion of in-vehicle memory128. DSP122 executes computer program code comprising a context recognizer and associated domain specific actuators, withintelematics unit120, which control operation and configuration of the listener automaton111. DSP122 controls communications betweentelematics unit120,listener automaton111, and activation cache in in-vehicle memory128. Data in the activation cache is supplied to thevehicle devices115 throughvehicle bus112.
• DSP122 controls, generates and accepts digital signals transmitted betweentelematics unit120 and avehicle communication bus112 that is connected tovarious vehicle components114,vehicle devices115,various sensors116, andmultimedia system118 inmobile vehicle110. DSP122 can activate various programming and operation modes, as well as provide for data transfers. In facilitating interactions among the various communication and electronic modules,vehicle communication bus112 utilizes bus interfaces such as controller-area network (CAN), J1850, International Organization for Standardization (ISO) Standard 9141, ISO Standard 11898 for high-speed applications, and ISO Standard 11519 for lower speed applications.
• Mobile vehicle110 viatelematics unit120 sends and receives radio transmissions fromwireless carrier system140, orsatellite carrier system141.Wireless carrier system140, orsatellite carrier system141 is any suitable system for transmitting a signal frommobile vehicle110 tocommunication network142.
• Communication network142 includes services from mobile telephone switching offices, wireless networks, public-switched telephone networks (PSTN), and Internet protocol (IP) networks.Communication network142 comprises a wired network, an optical network, a fiber network, another wireless network, or any combination thereof.Communication network142 connects tomobile vehicle110 viawireless carrier system140, orsatellite carrier system141.
• Communication network142 can send and receive short messages according to established protocols such as dedicated short range communication standard (DSRC), IS-637 standards for short message service (SMS), IS-136 air-interface standards for SMS, and GSM 03.40 and 09.02 standards. In one embodiment of the invention, similar to paging, an SMS communication is posted along with an intended recipient, such as a communication device inmobile vehicle110.
• Call center180 is a location where many calls are received and serviced at the same time, or where many calls are sent at the same time. In one embodiment of the invention, the call center is a telematics call center, facilitating communications to and fromtelematics unit120 inmobile vehicle110. In another embodiment, thecall center180 is a voice call center, providing verbal communications between acommunication service advisor185, incall center180 and a subscriber. In another embodiment,call center180 contains each of these functions.
• Communication services advisor185 is a real advisor or a virtual advisor. A real advisor is a human being in verbal communication with a user or subscriber. A virtual advisor is a synthesized speech interface responding to requests from user or subscriber. In one embodiment, the virtual advisor includes one or more recorded messages. In another embodiment, the virtual advisor generates speech messages using a call center based text to speech synthesizer (TTS). In another embodiment, the virtual advisor includes both recorded and TTS generated messages.
• Call center180 provides services totelematics unit120.Communication services advisor185 provides one of a number of support services to a subscriber.Call center180 can transmit and receive data via a data signal totelematics unit120 inmobile vehicle110 throughwireless carrier system140,satellite carrier systems141, orcommunication network142.
• Call center180 can determine mobile identification numbers (MINs) and telematics unit identifiers associated with a telematics unit access request, compare MINs and telematics unit identifiers with a database of identifier records, and send calling-state messages to thetelematics unit120 based on the request and identification numbers.
• Communication network142 connectswireless carrier system140 orsatellite carrier system141 to auser computer150, a wireless or wiredphone160, ahandheld device170, such as a personal digital assistant, andcall center180.User computer150 orhandheld device170 has a wireless modem to send data throughwireless carrier system140, orsatellite carrier system141, which connects tocommunication network142. In another embodiment,user computer150 orhandheld device170 has a wired modem that connects tocommunications network142. Data is received atcall center180.Call center180 has any suitable hardware and software capable of providing web services to help transmit messages and data signals fromuser computer150 orhandheld device170 totelematics unit120 inmobile vehicle110.
• FIG. 2 is a flow diagram of a method for enabling a device function of a vehicle in accordance with one embodiment of the current invention at200. The method enabling a device function of a vehicle at200 begins (block205) when a speech-input stream is received at a telematics unit from a speech source (block210). The speech source can be human speech or speech generated by a speech synthesizer. A speech input context is determined for the received speech input stream (block220). The speech input context identifies the framework in which to interpret the received speech input stream. The speech input context associates the speech input stream to a specific device function of the vehicle such as navigation or personal calling.
• The received speech input is processed based on the determined speech input context (block230). The device function of the vehicle is enabled responsive to the processed speech input stream (block240). The vehicle device in control of the enabled device function of the vehicle is directed based on the processed speech input stream (block250). An example of a vehicle device is the navigation system of the vehicle and the corresponding device function of the vehicle is navigation. The method ends (block295).
• FIG. 3 is a flow diagram detailing the step of determining the speech input context atblock220 ofFIG.2. The step of determining the speech input context at300 begins (block305) with monitoring the speech input stream at a context recognizer (block310). The context recognizer comprises a context verbiage. The speech input stream is compared to the context verbiage (block320). An example of verbiage contained in the context recognizer is the word “street” preceded by a text string. This verbiage is use to identify an address as a component of the speech input stream.
• In one embodiment, a speech input stream comprised of numerical utterances followed by non-numerical utterances is associated with a navigation destination address context. In another embodiment, a speech input stream comprised of numerical utterances is associated with a directory assistance context.
• Each device function of the vehicle is assigned a domain specific actuator. The domain specific actuator contains a set of rules and structures that determine how to format the speech input stream for the corresponding vehicle device that controls the particular device function of the vehicle. One of a plurality of domain specific actuators is selected based on the comparison of the speech input stream to the context verbiage (block330) and the step ends (block395).
• In one example of the system and method for enabling a device function of a vehicle, a subscriber contacts directory assistance to obtain a phone number for a business. The directory assistance operator speaks the phone number for the business. The spoken phone number is the speech input stream in this example. The context recognizer identifies the string of numbers as a phone number by matching the received phone number to context verbiage corresponding to a phone number string. The context recognizer having determined that a phone number is being received selects a domain specific actuator for personal calling. The speech input stream is then formatted so that the phone number is available for use by the subscriber's in-vehicle phone or personal phonebook. The phone number is written to the activation cache and the personal calling device function is thereby enabled with the phone number data.
• In another example, following on the previous example, the subscriber's personal calling is directed to request what action the subscriber would like to take regarding the received phone number. The personal calling device sends the subscriber a prompt asking the subscriber if they wish to dial or to store the phone number.
• FIG. 4 is a flow diagram detailing the step of processing the received speech input stream atblock230 ofFIG. 2. The step of processing the received speech input stream at400 begins (block405) by accessing a set of rules and structures for formatting the speech input stream according the determined speech input context (block410). The set of rules and structures are contained in the domain specific actuator. The received speech input stream is formatted based on the set of rules and structures (block420). For example, if the speech input stream includes a phone number, the speech input stream is formatted so that the phone number and other relevant data, such as the entity associated with the phone number, is available to and in the proper format for personal calling. The step ends (block495).
• FIG. 5 is a flow diagram detailing the step enabling the device function of the vehicle atblock240 ofFIG. 2. The step of enabling the device function of the vehicle at500 begins (block505) with writing the processed speech input stream in an activation cache (block510). The activation cache is a memory location where a vehicle device can access the processed speech input stream. The vehicle device corresponding to the enabled device function of the vehicle is activated (block520). The processed speech input stream from the activation cache is supplied to the vehicle device (block530) and the step ends (block595). In the example where the device function of the vehicle is personal calling the vehicle device corresponding to personal calling is the in-vehicle phone. A phone number processed from the speech input stream and written to the activation cache would be supplied to the in-vehicle phone for dialing or storing.
• While embodiments of the invention disclosed herein are presently considered to be preferred, various changes and modifications can be made without departing from the spirit and scope of the invention. The scope of the invention is indicated in the appended claims, and all changes that come within the meaning and range of equivalents are intended to be embraced therein.

Claims (18)

1. A method for enabling a device function of a vehicle, the method comprising:

receiving a speech input stream at a telematics unit;

determining a speech input context for the received speech input stream;

processing the received speech input stream based on the determination; and

enabling the device function of the vehicle responsive to the processed speech input stream.

2. The method ofclaim 1 wherein determining a speech input context for the received speech input stream comprises:

monitoring the speech input stream at a context recognizer, the context recognizer comprising a context verbiage;

comparing the speech input stream to the context verbiage; and

selecting one of a plurality of domain specific actuators based on the determined speech input context.

3. The method ofclaim 1 wherein processing the received speech input stream comprises:

accessing a set of rules and structures for formatting the speech input stream according to the determined speech input context; and

formatting the received speech input stream based on the set of rules and the structures.

4. The method ofclaim 3, wherein the set of rules and structures are contained in a domain specific actuator.

5. The method ofclaim 1 wherein enabling the device function of the vehicle comprises:

writing the processed speech input stream in an activation cache;

activating a vehicle device corresponding to the device function of the vehicle; and

supplying the processed speech input stream from the activation cache to the vehicle device.

6. The method ofclaim 1 further comprising:

directing a vehicle device in control of the enabled device function of the vehicle based on the processed speech input stream.

7. A computer usable medium including computer program code for enabling a device function of a vehicle comprising:

computer program code for receiving a speech input stream at a telematics unit;

computer program code for determining a speech input context for the received speech input stream;

computer program code for processing the received speech input stream based on the determination; and

computer program code for enabling the device function of the vehicle responsive to the processed speech input stream.

8. The computer usable medium ofclaim 7 wherein computer program code for determining a speech input context for the received speech input stream comprises:

computer program code for monitoring the speech input stream at a context recognizer, the context recognizer comprising a context verbiage;

computer program code for comparing the speech input stream to the context verbiage; and

computer program code for selecting one of a plurality of domain specific actuators based on the determined speech input context.

9. The computer usable medium ofclaim 7 wherein processing the received speech input stream comprises:

computer program code for accessing a set of rules and structures for formatting the speech input stream according to the determined speech input context; and

computer program code for formatting the received speech input stream based on the set of rules and the structures.

10. The computer usable medium ofclaim 9 wherein the set of rules and structures are contained in a domain specific actuator.

11. The computer usable medium ofclaim 7 wherein enabling the device function of the vehicle comprises:

computer program code for writing the processed speech input stream in an activation cache;

computer program code for activating a vehicle device corresponding to the enabled device function of the vehicle; and

computer program code for supplying the processed speech input stream from the activation cache to the vehicle device.

12. The computer usable medium ofclaim 7 further comprising:

computer program code for directing a vehicle device in control of the enabled device function of the vehicle based on the processed speech input stream.

13. A system for enabling a device function of a vehicle, the system comprising:

means for receiving a speech input stream at a telematics unit;

means for determining a speech input context for the received speech input stream;

means for processing the received speech input stream based on the determination; and

means for enabling the device function of the vehicle responsive to the processed speech input stream.

14. The system ofclaim 13 wherein determining a speech input context for the received speech input stream comprises:

means for monitoring the speech input stream at a context recognizer, the context recognizer comprising a context verbiage;

means for comparing the speech input stream to the context verbiage; and

means for selecting one of a plurality of domain specific actuators based on the determined speech input context.

15. The system ofclaim 13 wherein processing the received speech input stream comprises:

means for accessing a set of rules and structures for formatting the speech input stream according to the determined speech input context; and

means for formatting the received speech input stream based on the set of rules and the structures.

16. The system ofclaim 15 wherein the set of rules and structures are contained in a domain specific actuator.

17. The system ofclaim 13 wherein enabling the device function of the vehicle comprises:

means for writing the processed speech input stream in an activation cache;

means for activating a vehicle device corresponding to the enabled device function of the vehicle; and

means for supplying the processed speech input stream from the activation cache to the vehicle device.

18. The system ofclaim 13 further comprising:

means for directing a vehicle device in control of the enabled device function of the vehicle based on the processed speech input stream.

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