US20080250454A1 - Information transmitting apparatus and method, information receiving apparatus and method, provider, and broadcasting system - Google Patents
Information transmitting apparatus and method, information receiving apparatus and method, provider, and broadcasting systemDownload PDFInfo
- Publication number
- US20080250454A1 US20080250454A1US12/099,442US9944208AUS2008250454A1US 20080250454 A1US20080250454 A1US 20080250454A1US 9944208 AUS9944208 AUS 9944208AUS 2008250454 A1US2008250454 A1US 2008250454A1
- Authority
- US
- United States
- Prior art keywords
- data
- information
- audio
- epg
- program
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/007—Transform coding, e.g. discrete cosine transform
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23614—Multiplexing of additional data and video streams
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23614—Multiplexing of additional data and video streams
- H04N21/23617—Multiplexing of additional data and video streams by inserting additional data into a data carousel, e.g. inserting software modules into a DVB carousel
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2362—Generation or processing of Service Information [SI]
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2365—Multiplexing of several video streams
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2365—Multiplexing of several video streams
- H04N21/23655—Statistical multiplexing, e.g. by controlling the encoder to alter its bitrate to optimize the bandwidth utilization
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2368—Multiplexing of audio and video streams
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
- H04N21/26216—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints involving the channel capacity, e.g. network bandwidth
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26283—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists for associating distribution time parameters to content, e.g. to generate electronic program guide data
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/2665—Gathering content from different sources, e.g. Internet and satellite
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4341—Demultiplexing of audio and video streams
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4348—Demultiplexing of additional data and video streams
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4348—Demultiplexing of additional data and video streams
- H04N21/4349—Demultiplexing of additional data and video streams by extracting from data carousels, e.g. extraction of software modules from a DVB carousel
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/633—Control signals issued by server directed to the network components or client
- H04N21/6332—Control signals issued by server directed to the network components or client directed to client
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/637—Control signals issued by the client directed to the server or network components
- H04N21/6377—Control signals issued by the client directed to the server or network components directed to server
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/65—Transmission of management data between client and server
- H04N21/654—Transmission by server directed to the client
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/65—Transmission of management data between client and server
- H04N21/658—Transmission by the client directed to the server
Definitions
- the present inventionrelates to an information transmitting apparatus and method, an information receiving apparatus and method, a provider, and a broadcasting system.
- the inventionrelates to an information transmitting apparatus and method, an information receiving apparatus and method, a provider, and a broadcasting system in which the transmission amount of data of program information can be increased when the transmission amounts of video data and audio data can be decreased.
- the inventionalso relates to an information transmitting apparatus and method, an information receiving apparatus and method, a provider, and a broadcasting system in which the information receiving apparatus can recognize, in a short time, the transmission statuses of schedule EPG data that indicate program broadcast schedules of the transmission side.
- EPGelectronic program guide
- EITevent information table
- FIG. 1is a table showing an example of the EIT in which the total transmission rate of EPG information is set at 150 kbps.
- the EITconsists of a network ID, a TS-ID, a service ID, table IDs, program broadcast hours corresponding to the table IDs, program lengths corresponding to the table IDs, and other data. Further, a program title, genre information, etc. can be described in descriptors together with a broadcast start hour and a program length.
- the EITgenerally consists of EPG data of the self station and EPG data of other stations, each of which consists of data of current and next programs, data of programs within 6 hours from the present time, data of programs that are 6-24 hours away, data of programs that are 2-3 days away, and data of programs that are 4-8 days away.
- the data of programs within 6 hours from the present time, the data of programs that are 6-24 hours away, the data of programs that are 2-3 days away, and the data of programs that are 4-8 days awayare generically called schedule EPG data that indicates a program broadcast schedule.
- Each of those EPG datahas its own Table_id (Table_identification code) and a re-transmission cycle.
- EPG dataare transmitted at re-transmission cycles that are set for the respective Table_id data and have respective prescribed transmission rates.
- the EPG data of current and next programshas a relatively short re-transmission cycle of about several seconds.
- the schedule EPG data indicating a program broadcast schedulehas a re-transmission cycle of about several minutes, which is longer than the re-transmission cycle of the EPG data of current and next programs.
- a prescribed EPG data (including prescribed services information) occupation bandwidthis set for the transmission channel bandwidth of a digital broadcasting system. Since priority is given to the transmission of video data and audio data, the EPG data occupation bandwidth does not vary even if a free portion occurs in the occupation bandwidth for the transmission of video data or the occupation bandwidth for the transmission of audio data.
- a viewertakes long time to acquire program information when the data amount of EPG data is large, because EPG data is transmitted to an information receiving apparatus at a constant transmission rate even if a free portion occurs in the occupation bandwidths for the transmission of video data and audio data.
- schedule EPG data indicating program broadcast scheduleshas long re-transmission cycles and there is no data indicating their transmission statuses
- an information receiving apparatustakes long time to judge the state of the transmission side when the transmission of the schedule EPG data is suspended due to the equipment trouble on the transmission side.
- the present inventionhas been made in view of the above circumstances, and an object of the invention is therefore to enable acquisition of program information in a short time by increasing the transmission amount of data of program information when the transmission amounts of video data and audio data can be decreased.
- Another object of the inventionis to allow an information receiving apparatus to recognize, in a short time, the transmission statuses of schedule EPG data that indicate program broadcast schedules of the transmission side.
- An information transmitting apparatuscomprises multiplexing means for multiplexing a plurality of signals; and control means for controlling a multiplexing ratio among the plurality of signals in the multiplexing means.
- An information transmitting methodcomprises a multiplexing step of multiplexing a plurality of signals; and a control step of controlling a multiplexing ratio among the plurality of signals in the multiplexing step.
- a provider according to the inventionprovides a computer-readable program for causing an information transmitting apparatus to execute a process comprising: a multiplexing step of multiplexing a plurality of signals; and a control step of controlling a multiplexing ratio among the plurality of signals in the multiplexing step.
- An information receiving apparatuscomprises separating means for separating program information that is multiplexed with a video signal and an audio signal; storing means for storing the program information separated by the separating means; and control means for controlling operations of the separating means and the storing means in accordance with a transmission rate of the program information.
- An information receiving methodcomprises a separating step of separating program information that is multiplexed with a video signal and an audio signal; a storing step of storing the program information separated by the separating means; and a control step of controlling operations of the separating step and the storing step in accordance with a transmission rate of the program information.
- a providerprovides a computer-readable program for causing an information receiving apparatus to execute a process comprising a separating step of separating program information that is multiplexed with a video signal and an audio signal; a storing step of storing the program information separated by the separating means; and a control step of controlling operations of the separating step and the storing step in accordance with a transmission rate of the program information.
- a broadcasting systemis such that an information transmitting apparatus comprises video encoding means for encoding a video signal; audio encoding means for encoding an audio signal; program information data generating means for generating data of program information; multiplexing means for multiplexing the data of the program information that is output from the program information data generating means with video data that is output from the video encoding means and audio data that is output from the audio encoding means; and control means for controlling a data output rate of the video encoding means, a data output rate of the audio encoding means, a data output rate of the program information data generating means, and a multiplexing ratio among the video data, the audio data, and the data of the program information in the multiplexing means, and that an information receiving apparatus comprises separating means for separating the program information that is multiplexed with the video signal and the audio signal; storing means for storing the program information separated by the separating means; and control means for controlling operations of the separating means and the storing means in accordance with a transmission
- An information transmitting apparatuscomprises program information data generating means for generating program information data including information of a transmission status of program information; and multiplexing means for multiplexing the program information data generated by the program information data generating means with an encoded video signal and an encoded audio signal.
- FIG. 1is a table showing an example of EIT
- FIG. 2shows how a video data occupation bandwidth, an audio data occupation bandwidth, and an EPG data occupation bandwidth vary with time in relation to a transmission channel bandwidth
- FIG. 3is a block diagram showing the configuration of an information transmitting apparatus according to an embodiment of the present invention.
- FIG. 4is a table showing an EIT in which the total transmission rate of EPG information is set at 330 kbps;
- FIG. 5shows how a video data occupation bandwidth, an audio data occupation bandwidth, and an EPG data occupation bandwidth vary with time in relation to a transmission channel bandwidth in a case where the transmission rate of EPG data is increased at prescribed time points;
- FIG. 6is a flowchart showing a bandwidth allocation changing process of a system controller
- FIG. 7is a block diagram showing the configuration of an information receiving apparatus according to an embodiment of the invention.
- FIG. 8is a flowchart showing the operation of an EPG data acquisition process of the information receiving apparatus
- FIG. 9shows an EIT form that defines a description format of EPG data of current and next programs
- FIG. 10shows a description of the transmission statuses of schedule EPG data that is made in a descriptor of EPG data of current and next programs and indicates program broadcast schedules
- FIG. 11is a flowchart showing a process of the information transmitting apparatus for acquiring data of the transmission statuses of schedule EPG data indicating program broadcast schedules;
- FIG. 12shows a form of a table information table that defines an SI description format.
- FIG. 3is a block diagram showing the configuration of an information transmitting apparatus according to an embodiment of the invention.
- the information processing apparatus 1outputs a transport stream TS based on a plurality of video signals and audio signals that are input externally.
- An MPEG video encoder 11 - 1generates a video elementary stream based on a video signal that is input externally and outputs it to a multiplexer 13 - 1 .
- An MPEG video encoder 11 - 2generates a video elementary stream based on a video signal that is input externally and outputs it to a multiplexer 13 - 2 .
- An MPEG audio encoder 12 - 1generates an audio elementary stream based on an audio signal that is input externally and outputs it to the multiplexer 13 - 1 .
- An MPEG audio encoder 12 - 2generates an audio elementary stream based on an audio signal that is input externally and outputs it to the multiplexer 13 - 2 .
- the multiplexer 13 - 1multiplexes a video elementary stream supplied from the MPEG video encoder 11 - 1 and an audio elementary stream supplied from the MPEG audio encoder 12 - 1 by incorporating those into packets having a prescribed fixed length, and outputs the packets to a transport stream multiplexer 14 .
- the multiplexer 13 - 2multiplexes a video elementary stream supplied from the MPEG video encoder 11 - 2 and an audio elementary stream supplied from the MPEG audio encoder 12 - 2 by incorporating those into packets having a prescribed fixed length, and outputs the packets to the transport stream multiplexer 14 .
- An SI database 15supplies system information data stored therein to an SI/EPG data generator 17 .
- An EPG database 16supplies EPG data stored therein to the SI/EPG data generator 17 .
- the SI/EPG data generator 17incorporates data that are supplied from the SI database 15 and the EPG database 16 and data indicating the transmission statuses of schedule EPG data that indicate program broadcast schedules into packets of a prescribed fixed length and outputs the packets to the transport stream multiplexer 14 .
- a schedule database 18supplies a system controller 19 with the contents, transmission rates, re-transmission cycles, etc. of video data, audio data, and EPG data, respectively, that will be transmitted from the information transmitting apparatus at each time point.
- the system controller 19manages the states of the MPEG video encoders 11 - 1 and 11 - 2 and the MPEG audio encoders 12 - 1 and 12 - 2 and controls the bit rates of video elementary streams that are output from the MPEG video encoders 11 - 1 and 11 - 2 and audio elementary streams that are output from the MPEG audio encoders 12 - 1 and 12 - 2 .
- the system controller 19controls the amount of packets that are output from the SI/EPG data generator 17 .
- the system controller 19controls the multiplexers 13 - 1 and 13 - 2 and the transport stream multiplexer 14 to thereby control the video data occupation bandwidth, the audio data occupation bandwidth, and the EPG data occupation bandwidth in relation to the transmission channel bandwidth.
- the transport stream multiplexer 14multiplexes packets that are supplied from the multiplexers 13 - 1 and 13 - 2 and the SI/EPG data generator 17 and outputs a transport stream.
- a modulator 20modulates a transport stream that is output from the transport stream multiplexer 14 according to a prescribed modulation scheme and outputs a modulated transport stream TS to, for example, an antenna (not shown) in the case of transmission by radio waves or to a prescribed interface in the case of transmission via a cable.
- FIG. 4is a table showing an EIT in which the total transmission rate of EPG information is set at 330 kbps.
- the re-transmission cycle of program information of other stations that are 6-24 hours awayis set at 10 seconds that is 1 ⁇ 2 of that of the EIT shown in FIG. 1 .
- the re-transmission cycle of program information of other stations that are 2-3 days awayis set at 20 seconds that is 1 ⁇ 3 of that of the EIT shown in FIG. 1 .
- the re-transmission cycle of program information of other stations that are 4-8 days awayis set at 30 seconds that is 1 ⁇ 6 of that of the EIT shown in FIG. 1 . Therefore, the transmission rate of program information of other stations that are 6-24 hours away in the EIT shown in FIG.
- the transmission rate of program information of other stations that are 2-3 days away in the EIT shown in FIG. 4is set at 60 kbps, which is three times higher than in the EIT shown in FIG. 1 .
- the transmission rate of program information of other stations that are 4-8 days away in the EIT shown in FIG. 4is set at 120 kbps, which is six times higher than in the EIT of FIG. 1 .
- a wider transmission channel bandwidthis required to transmit EPG data according to the EIT shown in FIG. 4 than to transmit EPG data according to the EIT shown in FIG. 1 .
- FIG. 5shows how a video data occupation bandwidth, an audio data occupation bandwidth, and EPG data occupation bandwidth vary with time in relation to a transmission channel bandwidth in a case where EPG data is transmitted according to the EIT of FIG. 4 in periods from time 0:00, 2:00, and 4:00 to prescribed time points and according to the EIT of FIG. 1 in the remaining periods.
- the EPG data occupation bandwidthis wider in the periods from time 0:00, 2:00, and 4:00 to the prescribed time points than in the remaining periods.
- the video data occupation bandwidth and the audio data occupation bandwidthare narrower in the periods from time 0:00, 2:00, and 4:00 to the prescribed time points than in the remaining periods. It is necessary to set the video data bit rate and the audio data bit rate lower in the periods from time 0:00, 2:00, and 4:00 to the prescribed time points than in the remaining periods.
- FIG. 6is a flowchart showing a bandwidth allocation changing process of the system controller 19 .
- the system controller 19reads out, from the schedule database 18 , data indicating current allocation of a video data occupation bandwidth, an audio data occupation bandwidth, and an EPG data occupation bandwidth.
- the system controller 19calculates video data transmission rates of the channels corresponding to the MPEG video encoders 11 - 1 and 11 - 2 , audio data transmission rates of the channels corresponding to the MPEG audio encoders 12 - 1 and 12 - 2 , and a transmission rate of EPG data.
- the system controller 19sets, in each of the MPEG video encoders 11 - 1 and 11 - 2 , the MPEG audio encoders 12 - 1 and 12 - 2 , and the SI/EPG data generator 17 , a transmission rate of packets that are output therefrom.
- the system controller 19sets operations corresponding to the allocation of a video data occupation bandwidth, an audio data occupation bandwidth, and an EPG data occupation bandwidth in the multiplexers 13 - 1 and 13 - 2 and the transport stream multiplexer 14 .
- the information transmitting apparatus 1can change the re-transmission cycle of EPG data at prescribed time points based on data that is set in the schedule database 18 .
- FIG. 7is a block diagram showing an information receiving apparatus according to an embodiment of the invention.
- the information receiving apparatus 2receives a transport stream that is supplied from a predetermined transmission channel and outputs a prescribed video signal and a prescribed audio signal based on a signal corresponding to a manipulation on a remote controller 3 .
- the remote controller 3transmits a prescribed infrared signal to an infrared rays (Ir) receiver 39 of the information receiving apparatus 2 based on a manipulation such as a channel selection by the user of the information receiving apparatus 2 .
- the Ir receiver 39outputs, to a system controller 38 , prescribed data corresponding to an infrared signal transmitted from the remote controller 3 .
- the system controller 38supplies a demultiplexer 32 with PID (packet identification data) that is based on a channel selection manipulation by the user, and supplies an EPG controller 35 with data indicating an operation that is based on a display manipulation by the user.
- the system controller 38extracts data that is described in the descriptor of EPG data of current and next programs and indicates the transmission statuses of schedule EPG data that indicate program broadcast schedules.
- a demodulator 31demodulates a transport stream TS that has been modulated according to a prescribed scheme and supplies a demodulated transport stream to the demultiplexer 32 .
- the demultiplexer 32divides a transport stream, and supplies a video elementary stream obtained from packets having prescribed PID to a video encoder 33 , an audio elementary stream obtained from packets having prescribed PID to an audio decoder 34 , EPG data to the EPG controller 35 , and SI data to the system controller 38 .
- the video decoder 33decodes a received video elementary stream and outputs a video signal according to a prescribed scheme to a display controller 37 .
- the audio decoder 34decodes a received audio elementary stream and outputs an audio signal to the outside.
- the EPG controller 35stores EPG data that is supplied from the demultiplexer 32 in an EPG memory 36 .
- the EPG controller 35reads out data stored in the EPG memory 36 under the control of the system controller 38 and outputs the read-out data to the display controller 37 according to a prescribed scheme.
- the display controller 37outputs a prescribed video signal to the outside based on signals supplied from the video decoder 33 and the EPG controller 35 .
- FIG. 8is a flowchart showing the operation of an EPG data acquisition process of the information receiving apparatus 2 .
- the system controller 38judges whether there has occurred an EPG data acquisition request. If there has occurred an EPG data acquisition request, the process goes to step S 22 , where it is judged whether the setting of the system controller 38 by the user's manipulating the remote controller 3 is such that EPG data should be acquired only at the time of rate increase (the total transfer rate of EPG information is increased). If it is judged at step S 22 that EPG data should be acquired only at the time of rate increase, the process goes to step S 23 , where the system controller 38 judges whether it has set data of a rate increase period in the EPG controller 35 .
- step S 23If it is judged at step S 23 that no data of a rate increase period has been set in the EPG controller 35 , the process goes to step S 24 , where the system controller 38 searches for data of an EPG data rate increase period that is included in SI data supplied from the demultiplexer 32 .
- step S 25the system controller 38 judges whether data of a rate increase period could be retrieved. If it is judged that data of a rate increase period could be retrieved, the process goes to step S 27 , where the system controller 38 sets the data of a rate increase period in the EPG controller 35 as data acquisition time. Then, the process goes to step S 28 .
- step S 25If it is judged at step S 25 that no data of a rate increase period could be retrieved, the system controller 38 sets default data acquisition time in the EPG controller 35 . Then, the process goes to step S 28 .
- step S 28the EPG controller 35 judges whether the present time is the thus-set data acquisition time. If it is judged that the present time is the thus-set data acquisition time, the process goes to step S 29 , where EPG data is acquired and stored in the EPG memory 36 .
- step S 28If it is judged at step S 28 that the present time is not the thus-set data acquisition time, the process is finished.
- step S 23If it is judged at step S 23 that data for a rate increase period has been set in the EPG controller 35 , the process goes to step S 28 .
- step S 22If it is judged at step S 22 that EPG data should be acquired also at time other than the time of rate increase, the process goes to step S 29 , where EPG data is acquired and stored in the EPG memory 36 .
- step S 21If it is judged at step S 21 that there has occurred no EPG data acquisition request, the process is finished.
- the information receiving apparatus 2can acquire EPG data only in rate increase periods. Periods when the total transmission rate of EPG information should be increased may be determined by management and the information receiving apparatus 2 may be caused to operate in accordance with the management.
- FIG. 9shows an EIT form that defines a description format of EPG data of current and next programs.
- a table ID (table_id) on the second line of the EIT to a last table ID (last_table_id) on the 16th lineare a header portion to be used for identification of this EIT.
- An event ID (event_id) on the 18th line and the following itemsare for description of transmission information relating to the current and next programs, and has a loop structure to allow repetitive description of transmission information relating to a plurality of programs.
- the transmission information relating to the current and next programsconsists of program start hours, program lengths, and other information. Information relating to a program such as a program title or a genre of the program can be described in a descriptor on the 25th line.
- FIG. 10shows a description of the transmission statuses of schedule EPG data that are described in the descriptor of EPG data of current and next programs and indicate program broadcast schedules.
- the second to sixth lineshave a loop structure.
- a table ID (table_id) on the third lineindicates an ID corresponding to schedule EPG data indicating a program broadcast schedule.
- a status flag (status_flag) on the fourth lineindicates that the information transmitting apparatus 1 is transmitting schedule EPG data indicating the corresponding program broadcast schedule if it has a value “1,” and indicates that the information transmitting apparatus 1 is not doing so if it has a value “0.”
- a version number (version_number) on the fifth lineindicates a value that allows the information receiving apparatus 2 to recognize whether the content is the same as in an already acquired descriptor.
- the information receiving apparatus 2can recognize, at the re-transmission cycle of the EPG data of current and next programs, the transmission statuses of schedule EPG data indicating program broadcast schedules.
- FIG. 11is a flowchart showing a process of the information receiving apparatus 2 for acquiring data of the transmission statuses of schedule EPG data indicating program broadcast schedules.
- the system controller 38reads out the descriptor of EPG data of current and next programs.
- the system controller 38judges whether the descriptor of the EPG data of current and next programs includes data that indicates the transmission status of schedule EPG data indicating a program broadcast schedule. If it is judged that the descriptor of the EPG data of current and next programs includes data that indicates the transmission status of schedule EPG data indicating a program broadcast schedule, the process goes to step S 13 , where a table ID and a version number is read out.
- step S 14the system controller 38 judges whether there exists already acquired data relating to the transmission status of schedule EPG data indicating a program broadcast schedule corresponding to the table ID that was read out at step S 13 . If it is judged that there exists already acquired data relating to the transmission status of schedule EPG data indicating a program broadcast schedule, the process goes to step S 15 .
- step S 15the system controller 38 judges whether the version number has been updated by comparing the version number that is included in the already acquired data relating to the transmission status of schedule EPG data indicating a program broadcast schedule with the version number read out at step S 13 . If it is judged that the version number has been updated, the process goes to step S 16 , where the system controller 38 reads out the data of the transmission status of schedule EPG data indicating a program broadcast schedule and stores it in a prescribed register inside the system controller 38 .
- step S 14If it is judged at step S 14 that there is no already acquired data relating to the transmission status of schedule EPG data indicating a program broadcast schedule, the process goes to step S 16 , where the system controller 38 reads out the data of the transmission status of schedule EPG data indicating a program broadcast schedule and stores it in a prescribed register inside the system controller 38 .
- step S 15If it is judged at step S 15 that the version number has not been updated yet, the process goes to step S 17 .
- step S 17the system controller 38 judges whether there exists next data that indicates the transmission status of schedule EPG data indicating a program broadcast schedule. If it is judged that there exists next data that indicates a transmission status of schedule EPG data indicating a program broadcast schedule, the process returns to step S 13 to repeat execution of step S 13 and the following steps.
- step S 12If it is judged at step S 12 that the descriptor of the EPG data of current and next programs includes no data that indicates a transmission state of schedule EPG data indicating a program broadcast schedule, the process is finished. If it is judged at step S 17 that there exists no next data that indicates a transmission state of schedule EPG data indicating a program broadcast schedule, the process is finished.
- the information receiving apparatus 2can recognize, at the re-transmission cycle of EPG data of current and next programs, the transmission statuses of schedule EPG data indicating latest program broadcast schedules by reading out the contents of the descriptor of the EPG data of current and next programs.
- FIG. 12shows a form of a table information table (TIT) that defines a description format of SI that indicates presence/absence of each piece of table information of an EIT or the like, a transmission cycle of EPG data, an updating date and time of EPG data, etc.
- TITtable information table
- the descriptions from a table ID (table_id) on the second line of the TIT to a last table ID (last_table_id) on the 16th linerepresent a header portion to be used for identification of this TIT.
- a table ID (table_id) on the 18th line and the following itemsdescribe transmission information relating to an EIT and has a loop structure to enable repetitive description of transmission information relating to a plurality of EITS.
- the transmission information relating to an EITconsists of a re-transmission cycle of the EIT, last updating time, a transmission status of the EIT, etc.
- the information receiving apparatus 2can recognize the transmission statuses of schedule EPG data indicating program broadcast schedules by executing a process equivalent to the one shown in FIG. 11 .
- the information receiving apparatus 2can recognize, in a short time, the transmission statuses of schedule EPG data indicating transmission-side program broadcast schedules.
- systemmeans the entire apparatus that consists of a plurality of apparatuses.
- recording mediasuch as a magnetic disk, a CD-ROM, a solid-state memory
- communication mediasuch as a network and a satellite can be used as a provider for providing a user with a computer program for execution of the above-described process.
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Databases & Information Systems (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Theoretical Computer Science (AREA)
- Discrete Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Television Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
Description
- 1. Field of the Invention
- The present invention relates to an information transmitting apparatus and method, an information receiving apparatus and method, a provider, and a broadcasting system. In particular, the invention relates to an information transmitting apparatus and method, an information receiving apparatus and method, a provider, and a broadcasting system in which the transmission amount of data of program information can be increased when the transmission amounts of video data and audio data can be decreased. The invention also relates to an information transmitting apparatus and method, an information receiving apparatus and method, a provider, and a broadcasting system in which the information receiving apparatus can recognize, in a short time, the transmission statuses of schedule EPG data that indicate program broadcast schedules of the transmission side.
- 2. Description of the Related Art
- In digital broadcasting systems, EPG (electronic program guide) data for providing program information is formed in an EIT (event information table) format according to the rules of DVB/SI (Digital Video Broadcasting/Service Information: EN300468) and multiplexed with other services information (SI) into a transport stream.
FIG. 1 is a table showing an example of the EIT in which the total transmission rate of EPG information is set at 150 kbps. The EIT consists of a network ID, a TS-ID, a service ID, table IDs, program broadcast hours corresponding to the table IDs, program lengths corresponding to the table IDs, and other data. Further, a program title, genre information, etc. can be described in descriptors together with a broadcast start hour and a program length.- The EIT generally consists of EPG data of the self station and EPG data of other stations, each of which consists of data of current and next programs, data of programs within 6 hours from the present time, data of programs that are 6-24 hours away, data of programs that are 2-3 days away, and data of programs that are 4-8 days away. The data of programs within 6 hours from the present time, the data of programs that are 6-24 hours away, the data of programs that are 2-3 days away, and the data of programs that are 4-8 days away are generically called schedule EPG data that indicates a program broadcast schedule. Each of those EPG data has its own Table_id (Table_identification code) and a re-transmission cycle. EPG data are transmitted at re-transmission cycles that are set for the respective Table_id data and have respective prescribed transmission rates. The EPG data of current and next programs has a relatively short re-transmission cycle of about several seconds. On the other hand, the schedule EPG data indicating a program broadcast schedule has a re-transmission cycle of about several minutes, which is longer than the re-transmission cycle of the EPG data of current and next programs.
- As shown in
FIG. 2 , as for the transmission of EPG data, a prescribed EPG data (including prescribed services information) occupation bandwidth is set for the transmission channel bandwidth of a digital broadcasting system. Since priority is given to the transmission of video data and audio data, the EPG data occupation bandwidth does not vary even if a free portion occurs in the occupation bandwidth for the transmission of video data or the occupation bandwidth for the transmission of audio data. - A viewer takes long time to acquire program information when the data amount of EPG data is large, because EPG data is transmitted to an information receiving apparatus at a constant transmission rate even if a free portion occurs in the occupation bandwidths for the transmission of video data and audio data.
- Further, since schedule EPG data indicating program broadcast schedules has long re-transmission cycles and there is no data indicating their transmission statuses, an information receiving apparatus takes long time to judge the state of the transmission side when the transmission of the schedule EPG data is suspended due to the equipment trouble on the transmission side.
- The present invention has been made in view of the above circumstances, and an object of the invention is therefore to enable acquisition of program information in a short time by increasing the transmission amount of data of program information when the transmission amounts of video data and audio data can be decreased.
- Another object of the invention is to allow an information receiving apparatus to recognize, in a short time, the transmission statuses of schedule EPG data that indicate program broadcast schedules of the transmission side.
- An information transmitting apparatus according to the invention comprises multiplexing means for multiplexing a plurality of signals; and control means for controlling a multiplexing ratio among the plurality of signals in the multiplexing means.
- An information transmitting method according to the invention comprises a multiplexing step of multiplexing a plurality of signals; and a control step of controlling a multiplexing ratio among the plurality of signals in the multiplexing step.
- A provider according to the invention provides a computer-readable program for causing an information transmitting apparatus to execute a process comprising: a multiplexing step of multiplexing a plurality of signals; and a control step of controlling a multiplexing ratio among the plurality of signals in the multiplexing step.
- An information receiving apparatus according to the invention comprises separating means for separating program information that is multiplexed with a video signal and an audio signal; storing means for storing the program information separated by the separating means; and control means for controlling operations of the separating means and the storing means in accordance with a transmission rate of the program information.
- An information receiving method according to the invention comprises a separating step of separating program information that is multiplexed with a video signal and an audio signal; a storing step of storing the program information separated by the separating means; and a control step of controlling operations of the separating step and the storing step in accordance with a transmission rate of the program information.
- A provider according to another aspect of the invention provides a computer-readable program for causing an information receiving apparatus to execute a process comprising a separating step of separating program information that is multiplexed with a video signal and an audio signal; a storing step of storing the program information separated by the separating means; and a control step of controlling operations of the separating step and the storing step in accordance with a transmission rate of the program information.
- A broadcasting system according to the invention is such that an information transmitting apparatus comprises video encoding means for encoding a video signal; audio encoding means for encoding an audio signal; program information data generating means for generating data of program information; multiplexing means for multiplexing the data of the program information that is output from the program information data generating means with video data that is output from the video encoding means and audio data that is output from the audio encoding means; and control means for controlling a data output rate of the video encoding means, a data output rate of the audio encoding means, a data output rate of the program information data generating means, and a multiplexing ratio among the video data, the audio data, and the data of the program information in the multiplexing means, and that an information receiving apparatus comprises separating means for separating the program information that is multiplexed with the video signal and the audio signal; storing means for storing the program information separated by the separating means; and control means for controlling operations of the separating means and the storing means in accordance with a transmission rate of the program information.
- An information transmitting apparatus according to another aspect of the invention comprises program information data generating means for generating program information data including information of a transmission status of program information; and multiplexing means for multiplexing the program information data generated by the program information data generating means with an encoded video signal and an encoded audio signal.
FIG. 1 is a table showing an example of EIT;FIG. 2 shows how a video data occupation bandwidth, an audio data occupation bandwidth, and an EPG data occupation bandwidth vary with time in relation to a transmission channel bandwidth;FIG. 3 is a block diagram showing the configuration of an information transmitting apparatus according to an embodiment of the present invention;FIG. 4 is a table showing an EIT in which the total transmission rate of EPG information is set at 330 kbps;FIG. 5 shows how a video data occupation bandwidth, an audio data occupation bandwidth, and an EPG data occupation bandwidth vary with time in relation to a transmission channel bandwidth in a case where the transmission rate of EPG data is increased at prescribed time points;FIG. 6 is a flowchart showing a bandwidth allocation changing process of a system controller;FIG. 7 is a block diagram showing the configuration of an information receiving apparatus according to an embodiment of the invention;FIG. 8 is a flowchart showing the operation of an EPG data acquisition process of the information receiving apparatus;FIG. 9 shows an EIT form that defines a description format of EPG data of current and next programs;FIG. 10 shows a description of the transmission statuses of schedule EPG data that is made in a descriptor of EPG data of current and next programs and indicates program broadcast schedules;FIG. 11 is a flowchart showing a process of the information transmitting apparatus for acquiring data of the transmission statuses of schedule EPG data indicating program broadcast schedules; andFIG. 12 shows a form of a table information table that defines an SI description format.FIG. 3 is a block diagram showing the configuration of an information transmitting apparatus according to an embodiment of the invention. Theinformation processing apparatus 1 outputs a transport stream TS based on a plurality of video signals and audio signals that are input externally. An MPEG video encoder11-1 generates a video elementary stream based on a video signal that is input externally and outputs it to a multiplexer13-1. An MPEG video encoder11-2 generates a video elementary stream based on a video signal that is input externally and outputs it to a multiplexer13-2.- An MPEG audio encoder12-1 generates an audio elementary stream based on an audio signal that is input externally and outputs it to the multiplexer13-1. An MPEG audio encoder12-2 generates an audio elementary stream based on an audio signal that is input externally and outputs it to the multiplexer13-2.
- The multiplexer13-1 multiplexes a video elementary stream supplied from the MPEG video encoder11-1 and an audio elementary stream supplied from the MPEG audio encoder12-1 by incorporating those into packets having a prescribed fixed length, and outputs the packets to a
transport stream multiplexer 14. The multiplexer13-2 multiplexes a video elementary stream supplied from the MPEG video encoder11-2 and an audio elementary stream supplied from the MPEG audio encoder12-2 by incorporating those into packets having a prescribed fixed length, and outputs the packets to thetransport stream multiplexer 14. - An
SI database 15 supplies system information data stored therein to an SI/EPG data generator 17. AnEPG database 16 supplies EPG data stored therein to the SI/EPG data generator 17. The SI/EPG data generator 17 incorporates data that are supplied from theSI database 15 and theEPG database 16 and data indicating the transmission statuses of schedule EPG data that indicate program broadcast schedules into packets of a prescribed fixed length and outputs the packets to thetransport stream multiplexer 14. - A
schedule database 18 supplies asystem controller 19 with the contents, transmission rates, re-transmission cycles, etc. of video data, audio data, and EPG data, respectively, that will be transmitted from the information transmitting apparatus at each time point. Based on the data supplied from theschedule database 18, thesystem controller 19 manages the states of the MPEG video encoders11-1 and11-2 and the MPEG audio encoders12-1 and12-2 and controls the bit rates of video elementary streams that are output from the MPEG video encoders11-1 and11-2 and audio elementary streams that are output from the MPEG audio encoders12-1 and12-2. Further, thesystem controller 19 controls the amount of packets that are output from the SI/EPG data generator 17. Still further, thesystem controller 19 controls the multiplexers13-1 and13-2 and thetransport stream multiplexer 14 to thereby control the video data occupation bandwidth, the audio data occupation bandwidth, and the EPG data occupation bandwidth in relation to the transmission channel bandwidth. - The transport stream multiplexer14 multiplexes packets that are supplied from the multiplexers13-1 and13-2 and the SI/
EPG data generator 17 and outputs a transport stream. Amodulator 20 modulates a transport stream that is output from thetransport stream multiplexer 14 according to a prescribed modulation scheme and outputs a modulated transport stream TS to, for example, an antenna (not shown) in the case of transmission by radio waves or to a prescribed interface in the case of transmission via a cable. FIG. 4 is a table showing an EIT in which the total transmission rate of EPG information is set at 330 kbps. In the EIT shown inFIG. 4 , the re-transmission cycle of program information of other stations that are 6-24 hours away is set at 10 seconds that is ½ of that of the EIT shown inFIG. 1 . The re-transmission cycle of program information of other stations that are 2-3 days away is set at 20 seconds that is ⅓ of that of the EIT shown inFIG. 1 . The re-transmission cycle of program information of other stations that are 4-8 days away is set at 30 seconds that is ⅙ of that of the EIT shown inFIG. 1 . Therefore, the transmission rate of program information of other stations that are 6-24 hours away in the EIT shown inFIG. 4 is set at 64 kbps, which is two times higher than in the EIT shown inFIG. 1 . The transmission rate of program information of other stations that are 2-3 days away in the EIT shown inFIG. 4 is set at 60 kbps, which is three times higher than in the EIT shown inFIG. 1 . The transmission rate of program information of other stations that are 4-8 days away in the EIT shown inFIG. 4 is set at 120 kbps, which is six times higher than in the EIT ofFIG. 1 . A wider transmission channel bandwidth is required to transmit EPG data according to the EIT shown inFIG. 4 than to transmit EPG data according to the EIT shown inFIG. 1 .FIG. 5 shows how a video data occupation bandwidth, an audio data occupation bandwidth, and EPG data occupation bandwidth vary with time in relation to a transmission channel bandwidth in a case where EPG data is transmitted according to the EIT ofFIG. 4 in periods from time 0:00, 2:00, and 4:00 to prescribed time points and according to the EIT ofFIG. 1 in the remaining periods. The EPG data occupation bandwidth is wider in the periods from time 0:00, 2:00, and 4:00 to the prescribed time points than in the remaining periods.- Conversely, the video data occupation bandwidth and the audio data occupation bandwidth are narrower in the periods from time 0:00, 2:00, and 4:00 to the prescribed time points than in the remaining periods. It is necessary to set the video data bit rate and the audio data bit rate lower in the periods from time 0:00, 2:00, and 4:00 to the prescribed time points than in the remaining periods.
FIG. 6 is a flowchart showing a bandwidth allocation changing process of thesystem controller 19. At step S11, thesystem controller 19 reads out, from theschedule database 18, data indicating current allocation of a video data occupation bandwidth, an audio data occupation bandwidth, and an EPG data occupation bandwidth. At step S12, by using the read-out data indicating the bandwidth allocation, thesystem controller 19 calculates video data transmission rates of the channels corresponding to the MPEG video encoders11-1 and11-2, audio data transmission rates of the channels corresponding to the MPEG audio encoders12-1 and12-2, and a transmission rate of EPG data.- At step S13, the
system controller 19 sets, in each of the MPEG video encoders11-1 and11-2, the MPEG audio encoders12-1 and12-2, and the SI/EPG data generator 17, a transmission rate of packets that are output therefrom. At step S14, thesystem controller 19 sets operations corresponding to the allocation of a video data occupation bandwidth, an audio data occupation bandwidth, and an EPG data occupation bandwidth in the multiplexers13-1 and13-2 and thetransport stream multiplexer 14. - In the above-described manner, the
information transmitting apparatus 1 can change the re-transmission cycle of EPG data at prescribed time points based on data that is set in theschedule database 18. FIG. 7 is a block diagram showing an information receiving apparatus according to an embodiment of the invention. Theinformation receiving apparatus 2 receives a transport stream that is supplied from a predetermined transmission channel and outputs a prescribed video signal and a prescribed audio signal based on a signal corresponding to a manipulation on aremote controller 3.- The
remote controller 3 transmits a prescribed infrared signal to an infrared rays (Ir)receiver 39 of theinformation receiving apparatus 2 based on a manipulation such as a channel selection by the user of theinformation receiving apparatus 2. TheIr receiver 39 outputs, to asystem controller 38, prescribed data corresponding to an infrared signal transmitted from theremote controller 3. Thesystem controller 38 supplies ademultiplexer 32 with PID (packet identification data) that is based on a channel selection manipulation by the user, and supplies anEPG controller 35 with data indicating an operation that is based on a display manipulation by the user. Thesystem controller 38 extracts data that is described in the descriptor of EPG data of current and next programs and indicates the transmission statuses of schedule EPG data that indicate program broadcast schedules. - A
demodulator 31 demodulates a transport stream TS that has been modulated according to a prescribed scheme and supplies a demodulated transport stream to thedemultiplexer 32. Thedemultiplexer 32 divides a transport stream, and supplies a video elementary stream obtained from packets having prescribed PID to avideo encoder 33, an audio elementary stream obtained from packets having prescribed PID to anaudio decoder 34, EPG data to theEPG controller 35, and SI data to thesystem controller 38. - The
video decoder 33 decodes a received video elementary stream and outputs a video signal according to a prescribed scheme to adisplay controller 37. Theaudio decoder 34 decodes a received audio elementary stream and outputs an audio signal to the outside. - The
EPG controller 35 stores EPG data that is supplied from thedemultiplexer 32 in anEPG memory 36. TheEPG controller 35 reads out data stored in theEPG memory 36 under the control of thesystem controller 38 and outputs the read-out data to thedisplay controller 37 according to a prescribed scheme. Thedisplay controller 37 outputs a prescribed video signal to the outside based on signals supplied from thevideo decoder 33 and theEPG controller 35. FIG. 8 is a flowchart showing the operation of an EPG data acquisition process of theinformation receiving apparatus 2. At step S21, thesystem controller 38 judges whether there has occurred an EPG data acquisition request. If there has occurred an EPG data acquisition request, the process goes to step S22, where it is judged whether the setting of thesystem controller 38 by the user's manipulating theremote controller 3 is such that EPG data should be acquired only at the time of rate increase (the total transfer rate of EPG information is increased). If it is judged at step S22 that EPG data should be acquired only at the time of rate increase, the process goes to step S23, where thesystem controller 38 judges whether it has set data of a rate increase period in theEPG controller 35.- If it is judged at step S23 that no data of a rate increase period has been set in the
EPG controller 35, the process goes to step S24, where thesystem controller 38 searches for data of an EPG data rate increase period that is included in SI data supplied from thedemultiplexer 32. At step S25, thesystem controller 38 judges whether data of a rate increase period could be retrieved. If it is judged that data of a rate increase period could be retrieved, the process goes to step S27, where thesystem controller 38 sets the data of a rate increase period in theEPG controller 35 as data acquisition time. Then, the process goes to step S28. - If it is judged at step S25 that no data of a rate increase period could be retrieved, the
system controller 38 sets default data acquisition time in theEPG controller 35. Then, the process goes to step S28. - At step S28, the
EPG controller 35 judges whether the present time is the thus-set data acquisition time. If it is judged that the present time is the thus-set data acquisition time, the process goes to step S29, where EPG data is acquired and stored in theEPG memory 36. - If it is judged at step S28 that the present time is not the thus-set data acquisition time, the process is finished.
- If it is judged at step S23 that data for a rate increase period has been set in the
EPG controller 35, the process goes to step S28. - If it is judged at step S22 that EPG data should be acquired also at time other than the time of rate increase, the process goes to step S29, where EPG data is acquired and stored in the
EPG memory 36. - If it is judged at step S21 that there has occurred no EPG data acquisition request, the process is finished.
- As described above, the
information receiving apparatus 2 can acquire EPG data only in rate increase periods. Periods when the total transmission rate of EPG information should be increased may be determined by management and theinformation receiving apparatus 2 may be caused to operate in accordance with the management. FIG. 9 shows an EIT form that defines a description format of EPG data of current and next programs. A table ID (table_id) on the second line of the EIT to a last table ID (last_table_id) on the 16th line are a header portion to be used for identification of this EIT. An event ID (event_id) on the 18th line and the following items are for description of transmission information relating to the current and next programs, and has a loop structure to allow repetitive description of transmission information relating to a plurality of programs. The transmission information relating to the current and next programs consists of program start hours, program lengths, and other information. Information relating to a program such as a program title or a genre of the program can be described in a descriptor on the 25th line.FIG. 10 shows a description of the transmission statuses of schedule EPG data that are described in the descriptor of EPG data of current and next programs and indicate program broadcast schedules. To describe the statuses of a plurality of schedule EPG data indicating program broadcast schedules, the second to sixth lines have a loop structure. A table ID (table_id) on the third line indicates an ID corresponding to schedule EPG data indicating a program broadcast schedule. A status flag (status_flag) on the fourth line indicates that theinformation transmitting apparatus 1 is transmitting schedule EPG data indicating the corresponding program broadcast schedule if it has a value “1,” and indicates that theinformation transmitting apparatus 1 is not doing so if it has a value “0.” A version number (version_number) on the fifth line indicates a value that allows theinformation receiving apparatus 2 to recognize whether the content is the same as in an already acquired descriptor.- As described above, by reading out the contents of the descriptor of EPG data of current and next programs, the
information receiving apparatus 2 can recognize, at the re-transmission cycle of the EPG data of current and next programs, the transmission statuses of schedule EPG data indicating program broadcast schedules. FIG. 11 is a flowchart showing a process of theinformation receiving apparatus 2 for acquiring data of the transmission statuses of schedule EPG data indicating program broadcast schedules. At step S11, thesystem controller 38 reads out the descriptor of EPG data of current and next programs. At step S12, thesystem controller 38 judges whether the descriptor of the EPG data of current and next programs includes data that indicates the transmission status of schedule EPG data indicating a program broadcast schedule. If it is judged that the descriptor of the EPG data of current and next programs includes data that indicates the transmission status of schedule EPG data indicating a program broadcast schedule, the process goes to step S13, where a table ID and a version number is read out.- At step S14, the
system controller 38 judges whether there exists already acquired data relating to the transmission status of schedule EPG data indicating a program broadcast schedule corresponding to the table ID that was read out at step S13. If it is judged that there exists already acquired data relating to the transmission status of schedule EPG data indicating a program broadcast schedule, the process goes to step S15. At step S15, thesystem controller 38 judges whether the version number has been updated by comparing the version number that is included in the already acquired data relating to the transmission status of schedule EPG data indicating a program broadcast schedule with the version number read out at step S13. If it is judged that the version number has been updated, the process goes to step S16, where thesystem controller 38 reads out the data of the transmission status of schedule EPG data indicating a program broadcast schedule and stores it in a prescribed register inside thesystem controller 38. - If it is judged at step S14 that there is no already acquired data relating to the transmission status of schedule EPG data indicating a program broadcast schedule, the process goes to step S16, where the
system controller 38 reads out the data of the transmission status of schedule EPG data indicating a program broadcast schedule and stores it in a prescribed register inside thesystem controller 38. - If it is judged at step S15 that the version number has not been updated yet, the process goes to step S17.
- At step S17, the
system controller 38 judges whether there exists next data that indicates the transmission status of schedule EPG data indicating a program broadcast schedule. If it is judged that there exists next data that indicates a transmission status of schedule EPG data indicating a program broadcast schedule, the process returns to step S13 to repeat execution of step S13 and the following steps. - If it is judged at step S12 that the descriptor of the EPG data of current and next programs includes no data that indicates a transmission state of schedule EPG data indicating a program broadcast schedule, the process is finished. If it is judged at step S17 that there exists no next data that indicates a transmission state of schedule EPG data indicating a program broadcast schedule, the process is finished.
- As described above, the
information receiving apparatus 2 can recognize, at the re-transmission cycle of EPG data of current and next programs, the transmission statuses of schedule EPG data indicating latest program broadcast schedules by reading out the contents of the descriptor of the EPG data of current and next programs. FIG. 12 shows a form of a table information table (TIT) that defines a description format of SI that indicates presence/absence of each piece of table information of an EIT or the like, a transmission cycle of EPG data, an updating date and time of EPG data, etc. The descriptions from a table ID (table_id) on the second line of the TIT to a last table ID (last_table_id) on the 16th line represent a header portion to be used for identification of this TIT. A table ID (table_id) on the 18th line and the following items describe transmission information relating to an EIT and has a loop structure to enable repetitive description of transmission information relating to a plurality of EITS. The transmission information relating to an EIT consists of a re-transmission cycle of the EIT, last updating time, a transmission status of the EIT, etc.- By utilizing transmission information relating to EITs that is described in SI according to the above TIT description format, the
information receiving apparatus 2 can recognize the transmission statuses of schedule EPG data indicating program broadcast schedules by executing a process equivalent to the one shown inFIG. 11 . - As described above, the
information receiving apparatus 2 can recognize, in a short time, the transmission statuses of schedule EPG data indicating transmission-side program broadcast schedules. - In this specification, the term “system” means the entire apparatus that consists of a plurality of apparatuses.
- Not only recording media such as a magnetic disk, a CD-ROM, a solid-state memory but also communication media such as a network and a satellite can be used as a provider for providing a user with a computer program for execution of the above-described process.
Claims (17)
1-28. (canceled)
29. An information transmitting apparatus for transmitting a plurality of signals via a transmission channel after multiplexing them, wherein the plurality of signals are a video signal, an audio signal and an electronic program guide (EPG) signal, and wherein the apparatus comprises:
video encoding means for encoding the video signal;
audio encoding means for encoding the audio signal;
EPG data generating means for generating EPG data;
a schedule database defining, with respect to time, current allocations of a video data occupation bandwidth, an audio data occupation bandwidth and an EPG data occupation bandwidth;
multiplexing means for multiplexing the plurality of signals; and control means for controlling a data output rate of the video encoding means; and
control means for controlling a data output rate of the video encoding means, a data output rate of the EPG data generating means, and the multiplexing ratio among the video data, the audio data, and the EPG data in the multiplexing means to thereby vary the occupation bandwidths of the video data, the audio data and the EPG data with time in relation to the transmission channel bandwidth and in accordance with the schedule database, the video and audio data rates thereby being reduced when a temporarily higher EPG data output rate is to be accommodated.
30. An information transmitting method for transmitting a plurality of signals via a transmission channel after multiplexing them, wherein the plurality of signals are a video signal, an audio signal and an electronic program guide (EPG) signal; a schedule database defining, with respect to time, current allocations of a video data occupation bandwidth, an audio data occupation bandwidth and an EPG data occupation bandwidth, and wherein the method comprises
a video encoding step of encoding the video signal;
an audio encoding step of encoding the audio signal;
an EPG data generating step of generating EPG data;
a multiplexing step of multiplexing the plurality of signals; and
a control step of controlling a data output rate of the video encoding step, a data output rate of the audio encoding step, a data output rate of the EPG data generating step, and the multiplexing ratio among the video data, the audio data, and the EPG data in the multiplexing step to thereby vary the occupation bandwidths of the video data, the audio data and the EPG data with time in relation to the transmission channel bandwidth and in accordance with the schedule database, the video and audio data rates thereby being reduced when a temporarily higher EPG data output rate is to be accommodated.
31. A computer-readable program for causing an information transmitting apparatus which transmits a plurality of signals after multiplexing them to execute an information transmitting method according toclaim 30 .
32. An information receiving apparatus for receiving electronic program guide (EPG) data that is multiplexed at a controlled multiplexing ratio with a video signal and an audio signal by a method according toclaim 30 and for displaying the EPG data together with the video signal, the information receiving apparatus comprising:
separating means for separating the EPG data that is multiplexed with the video signal and the audio signal;
storing means for storing the EPG data separated by the separating means; and
control means for controlling operations of the separating means and the storing means in accordance with a transmission rate of the EPG data;
wherein the control means is operative to control the operations of the separating means and the storing means so that the EPG data is acquired only in a prescribed period when the transmission rate of the EPG data is temporarily higher.
33. An information receiving method for receiving electronic program guide (EPG) data that is multiplexed at a controlled multiplexing ratio with a video signal and an audio signal by a method according toclaim 30 and displaying the EPG data together with the video signal, the information receiving method comprising:
a separating step of separating the EPG data that is multiplexed with the video signal and the audio signal;
a storing step of storing the EPG data separated by the separating means; and
a control step of controlling operations of the separating step and the storing step in accordance with a transmission rate of the EPG data;
wherein the control step controls the operations of the separating step and the storing step so that the EPG data is acquired only in a prescribed period when the transmission rate of the EPG data is temporarily higher.
34. A computer-readable program for causing an Information receiving apparatus which receives EPG data that is multiplexed at a controlled multiplexing ratio with a video signal and an audio signal and displays the EPG data together with the video signal to execute an information receiving method according toclaim 33 .
35. A broadcasting system having an information transmitting apparatus according toclaim 29 for transmitting EPG data after multiplexing it with a video signal and an audio signal and an information receiving apparatus for receiving the EPG data that is multiplexed with the video signal and the audio signal and displaying the EPG data together with the video signal.
36. An information transmitting apparatus operable to transmit program information to an information receiving apparatus, the information transmitting apparatus comprising:
program information data generating means operable to generate program information data including information of a transmission status of the program information;
first multiplexing means operable to multiplex an encoded video signal and an encoded audio signal to generate a multiplexed audio-video signal;
second multiplexing means operable to multiplex the program information data with a multiplexed audio-video signal generated by the first multiplexing means to generate a signal to be transmitted to the information receiving apparatus; and
a controller operable to control the first and second multiplexing means to control the data rate of program guide data of the program information data, wherein the transmission status information indicates availability of a predetermined transmission scheme for program guide data.
37. An information transmitting apparatus according toclaim 36 , wherein the transmission status information comprises a predetermined transmission scheme version data.
38. An information transmitting method for transmitting program information to an information receiving apparatus, the information transmitting method comprising:
a program information data generating step for generating program information data including information of a transmission status of the program information;
a first multiplexing step far multiplexing an encoded video signal and an encoded audio signal to generate a multiplexed audio-video signal;
a second multiplexing step for multiplexing the program information data with a multiplexed audio-video signal generated by the first multiplexing step to generate a signal to be transmitted to the information receiving apparatus; and
a controlling step for controlling the first and second multiplexing steps to control the data rate of program guide data of the program information data,
herein the transmission status information Indicates availability of a predetermined transmission scheme for program guide data.
39. A computer program comprising program code for carrying out a method according toclaim 38 .
40. An information receiving apparatus operable to receive program information comprised of program information data multiplexed with a multiplexed audio-video signal, the multiplex audio-video signal being an encoded video signal multiplexed with an encoded audio signal the information receiving apparatus comprising:
demultiplexing means operable to demultiplex the program information; and characterized by
extracting means operable to extract information of a transmission status of the program information that is included in the program information data demultiplexed by the demultiplexing means,
wherein the transmission status information indicates availability of a predetermined transmission scheme for acquiring means to acquire program guide data.
41. An information receiving apparatus according toclaim 40 , wherein the transmission status information comprises predetermined transmission scheme version data.
42. An information receiving method for receiving program information comprised of program information data multiplexed with a multiplexed audio-video signal, the multiplex audio-video signal being an encoded video signal multiplexed with an encoded audio signal, the information receiving method comprising:
a demultiplexing step for demultiplexing the program information; and
an extracting step for extracting information of a transmission status of the program information that is included in the program information data demultiplexed by the demultiplexing step,
wherein the transmission status information indicates availability of a predetermined transmission scheme for acquiring program guide data.
43. A computer program comprising program code for carrying out a method according toclaim 42 .
44. A broadcasting system comprising:
an information transmitting apparatus according toclaim 36 ; and
an information receiving apparatus;
the information transmitting apparatus being operable to transmit program information to the information receiving apparatus.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/099,442US20080250454A1 (en) | 1998-06-18 | 2008-04-08 | Information transmitting apparatus and method, information receiving apparatus and method, provider, and broadcasting system |
| US12/358,643US8365228B2 (en) | 1998-06-18 | 2009-01-23 | Information transmitting apparatus and method, information receiving apparatus and method, provider, and broadcasting system |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10-171096 | 1998-06-18 | ||
| JP10-171097 | 1998-06-18 | ||
| JP17109698AJP4006829B2 (en) | 1998-06-18 | 1998-06-18 | Information transmitting apparatus and method, information receiving apparatus and method, recording medium, and broadcasting system |
| JP17109798AJP4006830B2 (en) | 1998-06-18 | 1998-06-18 | Information transmitting apparatus and method, information receiving apparatus and method, recording medium, and broadcasting system |
| US33442499A | 1999-06-16 | 1999-06-16 | |
| US12/099,442US20080250454A1 (en) | 1998-06-18 | 2008-04-08 | Information transmitting apparatus and method, information receiving apparatus and method, provider, and broadcasting system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US33442499AContinuation | 1998-06-18 | 1999-06-16 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/358,643DivisionUS8365228B2 (en) | 1998-06-18 | 2009-01-23 | Information transmitting apparatus and method, information receiving apparatus and method, provider, and broadcasting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20080250454A1true US20080250454A1 (en) | 2008-10-09 |
Family
ID=26493915
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/099,442AbandonedUS20080250454A1 (en) | 1998-06-18 | 2008-04-08 | Information transmitting apparatus and method, information receiving apparatus and method, provider, and broadcasting system |
| US12/358,643Expired - Fee RelatedUS8365228B2 (en) | 1998-06-18 | 2009-01-23 | Information transmitting apparatus and method, information receiving apparatus and method, provider, and broadcasting system |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/358,643Expired - Fee RelatedUS8365228B2 (en) | 1998-06-18 | 2009-01-23 | Information transmitting apparatus and method, information receiving apparatus and method, provider, and broadcasting system |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US20080250454A1 (en) |
| EP (2) | EP0966164B1 (en) |
| KR (1) | KR100709024B1 (en) |
| CN (1) | CN1152571C (en) |
| DE (2) | DE69926689T2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020035726A1 (en)* | 2000-04-17 | 2002-03-21 | Corl Mark T. | Information descriptor and extended information descriptor data structures for digital television signals |
| US20070045416A1 (en)* | 2005-08-24 | 2007-03-01 | Nokia Corporation | Mapping Between URI and ID Service Guide |
| US20090288119A1 (en)* | 2008-04-30 | 2009-11-19 | Sony Corporation | Information receiving apparatus, information receiving method, program, and broadcast system |
| US20100180301A1 (en)* | 2007-06-29 | 2010-07-15 | Yuji Ohi | Digital broadcasting receiving apparatus |
| US7761901B2 (en) | 2003-03-19 | 2010-07-20 | British Telecommunications Plc | Data transmission |
| US7974200B2 (en) | 2000-11-29 | 2011-07-05 | British Telecommunications Public Limited Company | Transmitting and receiving real-time data |
| US8135852B2 (en) | 2002-03-27 | 2012-03-13 | British Telecommunications Public Limited Company | Data streaming system and method |
| WO2013102671A3 (en)* | 2012-01-05 | 2013-09-06 | Tdf | Device and method for receiving a multiplexed stream broadcasting a pmt table including a descriptor for identifying documents transmitted in push mode |
| US8677413B2 (en) | 2000-04-17 | 2014-03-18 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US20160360259A1 (en)* | 2013-11-13 | 2016-12-08 | Hitachi Maxell, Ltd. | Broadcast receiver and method for displaying broadcast program video and application video in broadcast receiver |
| US10129580B2 (en) | 2013-11-13 | 2018-11-13 | Maxell, Ltd. | Broadcast receiver and broadcast receiving system |
| US10638189B2 (en) | 2013-11-13 | 2020-04-28 | Maxell, Ltd. | Broadcast receiver |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7168084B1 (en) | 1992-12-09 | 2007-01-23 | Sedna Patent Services, Llc | Method and apparatus for targeting virtual objects |
| US9286294B2 (en) | 1992-12-09 | 2016-03-15 | Comcast Ip Holdings I, Llc | Video and digital multimedia aggregator content suggestion engine |
| EP1097587A1 (en) | 1998-07-23 | 2001-05-09 | Diva Systems Corporation | Interactive user interface |
| US6754905B2 (en) | 1998-07-23 | 2004-06-22 | Diva Systems Corporation | Data structure and methods for providing an interactive program guide |
| US9924234B2 (en) | 1998-07-23 | 2018-03-20 | Comcast Ip Holdings I, Llc | Data structure and methods for providing an interactive program |
| US8270479B2 (en)* | 1999-04-06 | 2012-09-18 | Broadcom Corporation | System and method for video and audio encoding on a single chip |
| US6904610B1 (en) | 1999-04-15 | 2005-06-07 | Sedna Patent Services, Llc | Server-centric customized interactive program guide in an interactive television environment |
| US6754271B1 (en) | 1999-04-15 | 2004-06-22 | Diva Systems Corporation | Temporal slice persistence method and apparatus for delivery of interactive program guide |
| US7254824B1 (en) | 1999-04-15 | 2007-08-07 | Sedna Patent Services, Llc | Encoding optimization techniques for encoding program grid section of server-centric interactive programming guide |
| US7096487B1 (en) | 1999-10-27 | 2006-08-22 | Sedna Patent Services, Llc | Apparatus and method for combining realtime and non-realtime encoded content |
| US6651252B1 (en) | 1999-10-27 | 2003-11-18 | Diva Systems Corporation | Method and apparatus for transmitting video and graphics in a compressed form |
| US7464394B1 (en) | 1999-07-22 | 2008-12-09 | Sedna Patent Services, Llc | Music interface for media-rich interactive program guide |
| US9094727B1 (en) | 1999-10-27 | 2015-07-28 | Cox Communications, Inc. | Multi-functional user interface using slice-based encoding |
| DE60034364D1 (en) | 1999-10-27 | 2007-05-24 | Sedna Patent Services Llc | MULTIPLE VIDEO DRIVES USING SLICE BASED CODING |
| US7564873B1 (en)* | 1999-12-10 | 2009-07-21 | Cox Communications, Inc. | Method and apparatus for providing in-band messaging within a video on demand environment |
| ID29908A (en)* | 2000-04-11 | 2001-10-25 | Sony Corp | DATA TRANSMISSION REPLACEMENT, DATA RECEIVER, DATA PENTRANSMISSION METHOD, DATA RECEIVER METHOD, RECORDER REPLACEMENT, REPAIR REPLACEMENT, RECORDER METHOD AND RECYCLING METHOD |
| US7224837B2 (en)* | 2000-10-11 | 2007-05-29 | Screenpeaks Ltd. | Digital video broadcasting |
| DE10118966A1 (en)* | 2001-04-10 | 2002-10-24 | Hertz Inst Heinrich | Electronic individual viewer search and selection of TV program offerings involves displaying search results in hierarchical form according to degree of descriptor similarity |
| KR100426127B1 (en)* | 2001-07-19 | 2004-04-08 | 네이버시스템(주) | Transmission system for moving pictures |
| US7908628B2 (en) | 2001-08-03 | 2011-03-15 | Comcast Ip Holdings I, Llc | Video and digital multimedia aggregator content coding and formatting |
| US7793326B2 (en) | 2001-08-03 | 2010-09-07 | Comcast Ip Holdings I, Llc | Video and digital multimedia aggregator |
| CA2457051A1 (en)* | 2001-09-21 | 2003-03-27 | British Telecommunications Public Limited Company | Data communications method and system using buffer size to calculate transmission rate for congestion control |
| CN100471266C (en)* | 2002-03-27 | 2009-03-18 | 英国电讯有限公司 | Method for storing data sources of a streaming system |
| FR2848367A1 (en)* | 2002-12-04 | 2004-06-11 | Koninkl Philips Electronics Nv | SYSTEM AND METHOD FOR DISCOVERING SERVICES THAT MAY BE PROVIDED BY AT LEAST TWO SOURCES OF SEPARATE SERVICES |
| US7614068B2 (en)* | 2005-03-18 | 2009-11-03 | Nokia Corporation | Prioritization of electronic service guide carousels |
| KR100720587B1 (en)* | 2005-07-14 | 2007-05-22 | 엘지전자 주식회사 | Digital multimedia broadcasting receiving terminal and broadcasting receiving method using same |
| EP1781038A3 (en)* | 2005-10-14 | 2008-04-16 | Samsung Electronics Co.,Ltd. | Method and apparatus for transmitting/receiving EPG in digital broadcasting system using frequency channels |
| US9055316B2 (en) | 2007-03-26 | 2015-06-09 | The Directv Group, Inc. | Method and system for inserting digital video effects into a video stream at a multiplexing device after routing |
| US8619822B2 (en)* | 2007-03-26 | 2013-12-31 | The Directv Group, Inc. | Method and system for generating uplink signals from a ground segment |
| US8239913B2 (en) | 2007-03-26 | 2012-08-07 | The Directv Group, Inc. | Method and system for inserting digital video effects into a video stream in redundant paths before routing |
| ES2401270B1 (en)* | 2011-03-17 | 2014-02-25 | Vodafone España, S.A.U. | NETWORK METHOD AND ENTITY TO DOWNLOAD VIDEO ON MOBILE NETWORKS |
| US9154813B2 (en) | 2011-06-09 | 2015-10-06 | Comcast Cable Communications, Llc | Multiple video content in a composite video stream |
Citations (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515106A (en)* | 1994-01-05 | 1996-05-07 | Thomson Consumer Electronics, Inc. | Method and apparatus for transmitting/receiving a program guide for television services |
| US5559548A (en)* | 1994-05-20 | 1996-09-24 | Davis; Bruce | System and method for generating an information display schedule for an electronic program guide |
| US5664091A (en)* | 1995-08-31 | 1997-09-02 | Ncr Corporation | Method and system for a voiding unnecessary retransmissions using a selective rejection data link protocol |
| US5671226A (en)* | 1995-02-09 | 1997-09-23 | Mitsubishi Denki Kabushiki Kaisha | Multimedia information processing system |
| US5682387A (en)* | 1994-09-21 | 1997-10-28 | Nec Corporation | Demand assign multiplexer providiing efficient demand assign function in multimedia systems having statistical multiplexing transmission |
| US5708664A (en)* | 1995-08-22 | 1998-01-13 | Digi-Media Vision Ltd. | Statistical multiplexing |
| US5737030A (en)* | 1995-10-16 | 1998-04-07 | Lg Electronics Inc. | Electronic program guide device |
| US5801753A (en)* | 1995-08-11 | 1998-09-01 | General Instrument Corporation Of Delaware | Method and apparatus for providing an interactive guide to events available on an information network |
| US5892894A (en)* | 1995-12-08 | 1999-04-06 | Nippon Telegraph & Telephone Corp. | Data re-transmission management scheme with improved communication efficiency |
| US5930808A (en)* | 1996-05-30 | 1999-07-27 | Matsushita Electric Industrial Co., Ltd. | Data conversion apparatus for data communication system |
| US5999216A (en)* | 1996-11-21 | 1999-12-07 | U.S. Philips Corporation | Transmission and reception of television programs and an additional data service |
| US6035304A (en)* | 1996-06-25 | 2000-03-07 | Matsushita Electric Industrial Co., Ltd. | System for storing and playing a multimedia application adding variety of services specific thereto |
| US6057890A (en)* | 1996-12-12 | 2000-05-02 | Echostar Engineering Corp. | User interface for television schedule system in which the future events are paged in time |
| US6085253A (en)* | 1997-08-01 | 2000-07-04 | United Video Properties, Inc. | System and method for transmitting and receiving data |
| US6111612A (en)* | 1997-07-10 | 2000-08-29 | Thomson Consumer Electronics | System for forming and processing text data for use in program specific information for broadcast |
| US6185360B1 (en)* | 1996-10-08 | 2001-02-06 | Matsushita Electric Industrial Co., Ltd. | Information receiving system and method |
| US6212680B1 (en)* | 1998-03-04 | 2001-04-03 | Kabushiki Kaisha Toshiba | Multi-channel electronic programming guide and soft picture-in-picture acquisition for use with digital television |
| US6215530B1 (en)* | 1995-05-22 | 2001-04-10 | Scientific-Atlanta, Inc. | Logical and composite channel mapping in an MPEG network |
| US6233253B1 (en)* | 1997-05-23 | 2001-05-15 | Thomson Licensing S.A. | System for digital data format conversion and bit stream generation |
| US6240103B1 (en)* | 1997-03-21 | 2001-05-29 | Scientific-Atlanta, Inc. | Method and apparatus for detecting and preventing bandwidth overflow in a statistical multiplexer |
| US6252907B1 (en)* | 1996-12-27 | 2001-06-26 | Lg Electronics Inc. | Demultiplexer and transport decorder employing the same |
| US6285689B1 (en)* | 1996-05-24 | 2001-09-04 | Sony Corporation | Method and apparatus for verifying multiplexing schedule of digital signals and apparatus for multiplexing digital signals |
| US6310898B1 (en)* | 1998-01-27 | 2001-10-30 | Tektronix, Inc. | Compressed video and audio transport stream multiplexer |
| US6327275B1 (en)* | 1998-05-19 | 2001-12-04 | General Instrument Corporation | Remultiplexing variable rate bitstreams using a delay buffer and rate estimation |
| US6351474B1 (en)* | 1998-01-14 | 2002-02-26 | Skystream Networks Inc. | Network distributed remultiplexer for video program bearing transport streams |
| US6405371B1 (en)* | 1997-06-03 | 2002-06-11 | Konklijke Philips Electronics N.V. | Navigating through television programs |
| US6487220B2 (en)* | 1996-08-29 | 2002-11-26 | Mitsubishi Denki Kabushiki Kaisha | Content-based multiplexer device and multiplexing method |
| US6487720B1 (en)* | 1997-10-29 | 2002-11-26 | Victor Company Of Japan, Ltd. | Apparatus for receiving digital broadcast signal and apparatus for recording and reproducing digital broadcast information included in the digital broadcast signal |
| US6542518B1 (en)* | 1997-03-25 | 2003-04-01 | Sony Corporation | Transport stream generating device and method, and program transmission device |
Family Cites Families (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5115309A (en)* | 1990-09-10 | 1992-05-19 | At&T Bell Laboratories | Method and apparatus for dynamic channel bandwidth allocation among multiple parallel video coders |
| NZ259147A (en) | 1992-12-09 | 1997-05-26 | Discovery Communicat Inc | Network controller for cable television |
| US5579055A (en)* | 1993-06-07 | 1996-11-26 | Scientific-Atlanta, Inc. | Electronic program guide and text channel data controller |
| US5485221A (en)* | 1993-06-07 | 1996-01-16 | Scientific-Atlanta, Inc. | Subscription television system and terminal for enabling simultaneous display of multiple services |
| US5459789A (en)* | 1994-04-22 | 1995-10-17 | Thomson Consumer Electronics | Packet TV program component detector |
| US5477263A (en) | 1994-05-26 | 1995-12-19 | Bell Atlantic Network Services, Inc. | Method and apparatus for video on demand with fast forward, reverse and channel pause |
| KR100409187B1 (en)* | 1994-08-16 | 2004-03-10 | 소니 가부시끼 가이샤 | TV signal receiver and program switching device and method and remote controller |
| US5592470A (en)* | 1994-12-21 | 1997-01-07 | At&T | Broadband wireless system and network architecture providing broadband/narrowband service with optimal static and dynamic bandwidth/channel allocation |
| US5841433A (en)* | 1994-12-23 | 1998-11-24 | Thomson Consumer Electronics, Inc. | Digital television system channel guide having a limited lifetime |
| JP3593773B2 (en)* | 1995-12-28 | 2004-11-24 | ソニー株式会社 | Reproduction device and signal processing method |
| JP4190594B2 (en)* | 1995-12-28 | 2008-12-03 | ソニー株式会社 | Electronic apparatus and signal processing method |
| JP3666093B2 (en)* | 1995-12-25 | 2005-06-29 | ソニー株式会社 | Digital signal processor |
| US5905713A (en)* | 1996-04-15 | 1999-05-18 | Hughes Electronics Corporation | Method and apparatus for analyzing digital multi-program transmission packet streams |
| US6088360A (en)* | 1996-05-31 | 2000-07-11 | Broadband Networks Corporation | Dynamic rate control technique for video multiplexer |
| US5946045A (en)* | 1996-08-01 | 1999-08-31 | Thomson Consumer Electronics, Inc. | System for forming program guides and video data for storage and transmission in different coding formats |
| US5946052A (en)* | 1996-08-01 | 1999-08-31 | Thomson Consumer Electronics, Inc. | System for acquiring and processing video data and program guides transmitted in different coding formats |
| US6366326B1 (en)* | 1996-08-01 | 2002-04-02 | Thomson Consumer Electronics Inc. | System for acquiring, processing, and storing video data and program guides transmitted in different coding formats |
| US5886995A (en)* | 1996-09-05 | 1999-03-23 | Hughes Electronics Corporation | Dynamic mapping of broadcast resources |
| US5793425A (en) | 1996-09-13 | 1998-08-11 | Philips Electronics North America Corporation | Method and apparatus for dynamically controlling encoding parameters of multiple encoders in a multiplexed system |
| US6173330B1 (en)* | 1996-09-17 | 2001-01-09 | Motorola, Inc. | Delivery and acquisition of data segments with optimized inter-arrival time |
| US6052556A (en)* | 1996-09-27 | 2000-04-18 | Sharp Laboratories Of America | Interactivity enhancement apparatus for consumer electronics products |
| JPH10126750A (en)* | 1996-10-23 | 1998-05-15 | Matsushita Electric Ind Co Ltd | Program information broadcasting system, broadcasting device, and receiving terminal device |
| US6047317A (en)* | 1997-03-28 | 2000-04-04 | International Business Machines Corporation | System and method for enabling a user to rapidly access images in cyclically transmitted image streams |
| JP3236802B2 (en) | 1997-07-18 | 2001-12-10 | 株式会社オートネットワーク技術研究所 | Electrical junction box |
| EP0899955A3 (en)* | 1997-08-27 | 2001-01-31 | Matsushita Electric Industrial Co., Ltd. | Control information generating apparatus for broadcast system |
| US6160545A (en)* | 1997-10-24 | 2000-12-12 | General Instrument Corporation | Multi-regional interactive program guide for television |
| US7032236B1 (en)* | 1998-02-20 | 2006-04-18 | Thomson Licensing | Multimedia system for processing program guides and associated multimedia objects |
| JPH11340935A (en) | 1998-05-28 | 1999-12-10 | Sony Corp | Data multiplexer and its method |
- 1999
- 1999-06-16EPEP99304701Apatent/EP0966164B1/ennot_activeExpired - Lifetime
- 1999-06-16DEDE69926689Tpatent/DE69926689T2/ennot_activeExpired - Fee Related
- 1999-06-16EPEP03078634Apatent/EP1414246B1/ennot_activeExpired - Lifetime
- 1999-06-16DEDE69935360Tpatent/DE69935360T2/ennot_activeExpired - Fee Related
- 1999-06-17KRKR1019990022684Apatent/KR100709024B1/ennot_activeExpired - Fee Related
- 1999-06-18CNCNB991114876Apatent/CN1152571C/ennot_activeExpired - Fee Related
- 2008
- 2008-04-08USUS12/099,442patent/US20080250454A1/ennot_activeAbandoned
- 2009
- 2009-01-23USUS12/358,643patent/US8365228B2/ennot_activeExpired - Fee Related
Patent Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5515106A (en)* | 1994-01-05 | 1996-05-07 | Thomson Consumer Electronics, Inc. | Method and apparatus for transmitting/receiving a program guide for television services |
| US5559548A (en)* | 1994-05-20 | 1996-09-24 | Davis; Bruce | System and method for generating an information display schedule for an electronic program guide |
| US5682387A (en)* | 1994-09-21 | 1997-10-28 | Nec Corporation | Demand assign multiplexer providiing efficient demand assign function in multimedia systems having statistical multiplexing transmission |
| US5671226A (en)* | 1995-02-09 | 1997-09-23 | Mitsubishi Denki Kabushiki Kaisha | Multimedia information processing system |
| US6215530B1 (en)* | 1995-05-22 | 2001-04-10 | Scientific-Atlanta, Inc. | Logical and composite channel mapping in an MPEG network |
| US5801753A (en)* | 1995-08-11 | 1998-09-01 | General Instrument Corporation Of Delaware | Method and apparatus for providing an interactive guide to events available on an information network |
| US5708664A (en)* | 1995-08-22 | 1998-01-13 | Digi-Media Vision Ltd. | Statistical multiplexing |
| US5664091A (en)* | 1995-08-31 | 1997-09-02 | Ncr Corporation | Method and system for a voiding unnecessary retransmissions using a selective rejection data link protocol |
| US5737030A (en)* | 1995-10-16 | 1998-04-07 | Lg Electronics Inc. | Electronic program guide device |
| US5892894A (en)* | 1995-12-08 | 1999-04-06 | Nippon Telegraph & Telephone Corp. | Data re-transmission management scheme with improved communication efficiency |
| US6285689B1 (en)* | 1996-05-24 | 2001-09-04 | Sony Corporation | Method and apparatus for verifying multiplexing schedule of digital signals and apparatus for multiplexing digital signals |
| US5930808A (en)* | 1996-05-30 | 1999-07-27 | Matsushita Electric Industrial Co., Ltd. | Data conversion apparatus for data communication system |
| US6035304A (en)* | 1996-06-25 | 2000-03-07 | Matsushita Electric Industrial Co., Ltd. | System for storing and playing a multimedia application adding variety of services specific thereto |
| US6522672B1 (en)* | 1996-08-29 | 2003-02-18 | Mitsubshi Denki Kabushiki Kaisha | Content-based multiplexer device and multiplexing method |
| US6487220B2 (en)* | 1996-08-29 | 2002-11-26 | Mitsubishi Denki Kabushiki Kaisha | Content-based multiplexer device and multiplexing method |
| US6185360B1 (en)* | 1996-10-08 | 2001-02-06 | Matsushita Electric Industrial Co., Ltd. | Information receiving system and method |
| US5999216A (en)* | 1996-11-21 | 1999-12-07 | U.S. Philips Corporation | Transmission and reception of television programs and an additional data service |
| US6057890A (en)* | 1996-12-12 | 2000-05-02 | Echostar Engineering Corp. | User interface for television schedule system in which the future events are paged in time |
| US6252907B1 (en)* | 1996-12-27 | 2001-06-26 | Lg Electronics Inc. | Demultiplexer and transport decorder employing the same |
| US6240103B1 (en)* | 1997-03-21 | 2001-05-29 | Scientific-Atlanta, Inc. | Method and apparatus for detecting and preventing bandwidth overflow in a statistical multiplexer |
| US6542518B1 (en)* | 1997-03-25 | 2003-04-01 | Sony Corporation | Transport stream generating device and method, and program transmission device |
| US6233253B1 (en)* | 1997-05-23 | 2001-05-15 | Thomson Licensing S.A. | System for digital data format conversion and bit stream generation |
| US6405371B1 (en)* | 1997-06-03 | 2002-06-11 | Konklijke Philips Electronics N.V. | Navigating through television programs |
| US6111612A (en)* | 1997-07-10 | 2000-08-29 | Thomson Consumer Electronics | System for forming and processing text data for use in program specific information for broadcast |
| US6085253A (en)* | 1997-08-01 | 2000-07-04 | United Video Properties, Inc. | System and method for transmitting and receiving data |
| US6487720B1 (en)* | 1997-10-29 | 2002-11-26 | Victor Company Of Japan, Ltd. | Apparatus for receiving digital broadcast signal and apparatus for recording and reproducing digital broadcast information included in the digital broadcast signal |
| US6351474B1 (en)* | 1998-01-14 | 2002-02-26 | Skystream Networks Inc. | Network distributed remultiplexer for video program bearing transport streams |
| US6310898B1 (en)* | 1998-01-27 | 2001-10-30 | Tektronix, Inc. | Compressed video and audio transport stream multiplexer |
| US6212680B1 (en)* | 1998-03-04 | 2001-04-03 | Kabushiki Kaisha Toshiba | Multi-channel electronic programming guide and soft picture-in-picture acquisition for use with digital television |
| US6327275B1 (en)* | 1998-05-19 | 2001-12-04 | General Instrument Corporation | Remultiplexing variable rate bitstreams using a delay buffer and rate estimation |
Cited By (71)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8990860B2 (en) | 2000-04-17 | 2015-03-24 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8997152B2 (en) | 2000-04-17 | 2015-03-31 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US9414097B2 (en) | 2000-04-17 | 2016-08-09 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US20080134246A1 (en)* | 2000-04-17 | 2008-06-05 | Corl Mark T | Information descriptor and extended information descriptor data structures for digital television signals |
| US20080134247A1 (en)* | 2000-04-17 | 2008-06-05 | Corl Mark T | Information descriptor and extended information descriptor data structures for digital television signals |
| US9288512B2 (en) | 2000-04-17 | 2016-03-15 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US20100005491A1 (en)* | 2000-04-17 | 2010-01-07 | Corl Mark T | Information descriptor and extended information descriptor data structures for digital television signals |
| US9277286B2 (en) | 2000-04-17 | 2016-03-01 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US9118957B2 (en) | 2000-04-17 | 2015-08-25 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US7877771B2 (en)* | 2000-04-17 | 2011-01-25 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US7877772B2 (en) | 2000-04-17 | 2011-01-25 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US7877769B2 (en) | 2000-04-17 | 2011-01-25 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US7877773B2 (en) | 2000-04-17 | 2011-01-25 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US7877770B2 (en)* | 2000-04-17 | 2011-01-25 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US7917926B2 (en) | 2000-04-17 | 2011-03-29 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US20110145864A1 (en)* | 2000-04-17 | 2011-06-16 | Corl Mark T | Information descriptor and extended information descriptor data structures for digital television signals |
| US9118979B2 (en) | 2000-04-17 | 2015-08-25 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US9084019B2 (en) | 2000-04-17 | 2015-07-14 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US9032439B1 (en) | 2000-04-17 | 2015-05-12 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8484683B2 (en) | 2000-04-17 | 2013-07-09 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8510777B2 (en) | 2000-04-17 | 2013-08-13 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US9027055B1 (en) | 2000-04-17 | 2015-05-05 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8635648B1 (en) | 2000-04-17 | 2014-01-21 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8640169B1 (en) | 2000-04-17 | 2014-01-28 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8646004B1 (en) | 2000-04-17 | 2014-02-04 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8650594B2 (en) | 2000-04-17 | 2014-02-11 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8667535B2 (en) | 2000-04-17 | 2014-03-04 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8677413B2 (en) | 2000-04-17 | 2014-03-18 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8677411B2 (en) | 2000-04-17 | 2014-03-18 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8677412B2 (en) | 2000-04-17 | 2014-03-18 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8683523B2 (en) | 2000-04-17 | 2014-03-25 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8695039B2 (en) | 2000-04-17 | 2014-04-08 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8925012B2 (en) | 2000-04-17 | 2014-12-30 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8782705B2 (en) | 2000-04-17 | 2014-07-15 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US20050283801A1 (en)* | 2000-04-17 | 2005-12-22 | Corl Mark T | Information descriptor and extended information descriptor data structures for digital television signals |
| US8695040B2 (en) | 2000-04-17 | 2014-04-08 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8973041B2 (en) | 2000-04-17 | 2015-03-03 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8931005B2 (en) | 2000-04-17 | 2015-01-06 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8931004B2 (en) | 2000-04-17 | 2015-01-06 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8931007B2 (en) | 2000-04-17 | 2015-01-06 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8931006B2 (en) | 2000-04-17 | 2015-01-06 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8949896B2 (en) | 2000-04-17 | 2015-02-03 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8949898B2 (en) | 2000-04-17 | 2015-02-03 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8949897B2 (en) | 2000-04-17 | 2015-02-03 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8959551B2 (en) | 2000-04-17 | 2015-02-17 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8959550B2 (en) | 2000-04-17 | 2015-02-17 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8959549B2 (en) | 2000-04-17 | 2015-02-17 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8973044B2 (en) | 2000-04-17 | 2015-03-03 | LG Elecetonics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8973042B2 (en) | 2000-04-17 | 2015-03-03 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8925013B2 (en) | 2000-04-17 | 2014-12-30 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8973043B2 (en) | 2000-04-17 | 2015-03-03 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US20020035726A1 (en)* | 2000-04-17 | 2002-03-21 | Corl Mark T. | Information descriptor and extended information descriptor data structures for digital television signals |
| US8918813B2 (en) | 2000-04-17 | 2014-12-23 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US9015760B2 (en) | 2000-04-17 | 2015-04-21 | Lg Electronics Inc. | Information descriptor and extended information descriptor data structures for digital television signals |
| US7974200B2 (en) | 2000-11-29 | 2011-07-05 | British Telecommunications Public Limited Company | Transmitting and receiving real-time data |
| US8386631B2 (en) | 2002-03-27 | 2013-02-26 | British Telecommunications Plc | Data streaming system and method |
| US8135852B2 (en) | 2002-03-27 | 2012-03-13 | British Telecommunications Public Limited Company | Data streaming system and method |
| US7761901B2 (en) | 2003-03-19 | 2010-07-20 | British Telecommunications Plc | Data transmission |
| US20070045416A1 (en)* | 2005-08-24 | 2007-03-01 | Nokia Corporation | Mapping Between URI and ID Service Guide |
| US20100180301A1 (en)* | 2007-06-29 | 2010-07-15 | Yuji Ohi | Digital broadcasting receiving apparatus |
| US20090288119A1 (en)* | 2008-04-30 | 2009-11-19 | Sony Corporation | Information receiving apparatus, information receiving method, program, and broadcast system |
| WO2013102671A3 (en)* | 2012-01-05 | 2013-09-06 | Tdf | Device and method for receiving a multiplexed stream broadcasting a pmt table including a descriptor for identifying documents transmitted in push mode |
| US10129580B2 (en) | 2013-11-13 | 2018-11-13 | Maxell, Ltd. | Broadcast receiver and broadcast receiving system |
| US20160360259A1 (en)* | 2013-11-13 | 2016-12-08 | Hitachi Maxell, Ltd. | Broadcast receiver and method for displaying broadcast program video and application video in broadcast receiver |
| US10638189B2 (en) | 2013-11-13 | 2020-04-28 | Maxell, Ltd. | Broadcast receiver |
| US10659833B2 (en) | 2013-11-13 | 2020-05-19 | Maxell, Ltd. | Broadcast receiver and broadcast receiving system |
| US11076193B2 (en) | 2013-11-13 | 2021-07-27 | Maxell, Ltd. | Broadcast receiver and broadcast receiving system |
| US11140433B2 (en) | 2013-11-13 | 2021-10-05 | Maxell, Ltd. | Broadcast receiver |
| US11516527B2 (en) | 2013-11-13 | 2022-11-29 | Maxell, Ltd. | Broadcast receiver and broadcast receiving system |
| US11979629B1 (en) | 2013-11-13 | 2024-05-07 | Maxell, Ltd. | Broadcast receiver and broadcast receiving system |
| US12375747B2 (en) | 2013-11-13 | 2025-07-29 | Maxell, Ltd. | Broadcast receiver and broadcast receiving system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69926689T2 (en) | 2006-06-08 |
| CN1152571C (en) | 2004-06-02 |
| DE69935360D1 (en) | 2007-04-12 |
| EP0966164A2 (en) | 1999-12-22 |
| US20090133075A1 (en) | 2009-05-21 |
| DE69935360T2 (en) | 2007-10-31 |
| EP1414246B1 (en) | 2007-02-28 |
| US8365228B2 (en) | 2013-01-29 |
| KR100709024B1 (en) | 2007-04-19 |
| CN1241870A (en) | 2000-01-19 |
| EP1414246A2 (en) | 2004-04-28 |
| EP1414246A3 (en) | 2004-06-30 |
| KR20000006242A (en) | 2000-01-25 |
| DE69926689D1 (en) | 2005-09-22 |
| EP0966164B1 (en) | 2005-08-17 |
| EP0966164A3 (en) | 2003-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8365228B2 (en) | Information transmitting apparatus and method, information receiving apparatus and method, provider, and broadcasting system | |
| US6779195B2 (en) | Signal processing apparatus and signal receiving apparatus | |
| JP3981777B2 (en) | Information providing apparatus and method, information receiving apparatus and method, and information providing system | |
| US20040221307A1 (en) | Method and apparatus for preparing and transmitting electronic program information and apparatus for producing electronic program guide from the electronic program information | |
| CN100367244C (en) | Data transceiving system and method thereof | |
| KR20040078136A (en) | Improved communication of TV-anytime CRIDS | |
| JPH1169319A (en) | Information providing device and method, information receiving device and method, information providing system, and transmission medium | |
| JP4086403B2 (en) | Program information collection and distribution system and program information creation device | |
| US7051355B1 (en) | Receiving apparatus, receiving method, and providing medium | |
| US20140304732A1 (en) | Broadcast equipment | |
| JP4282258B2 (en) | Digital broadcast signal multiplex transmission device | |
| US20050083976A1 (en) | Embedding tv anytime crids | |
| JP4006829B2 (en) | Information transmitting apparatus and method, information receiving apparatus and method, recording medium, and broadcasting system | |
| KR100630248B1 (en) | Information transmitting unit and the method, information receiving unit and the method, and medium for the same | |
| JP4006830B2 (en) | Information transmitting apparatus and method, information receiving apparatus and method, recording medium, and broadcasting system | |
| JP3520873B2 (en) | Information providing apparatus and method, and recording medium | |
| JP4314682B2 (en) | Information signal transmission method, reception method, and reception apparatus | |
| EP1175786B1 (en) | Method, transmitter and transmission system | |
| JP5328955B2 (en) | How to retransmit digital broadcast signals | |
| JP2000261784A (en) | Transmission system | |
| JPH11275546A (en) | Signal processing unit, signal processing method and served medium | |
| JPH10191271A (en) | Program selection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STCB | Information on status: application discontinuation | Free format text:ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |