CA2256230A1 - Coding/decoding apparatus, coding/decoding system and multiplexed bit stream - Google Patents

Coding/decoding apparatus, coding/decoding system and multiplexed bit stream

Info

Publication number
CA2256230A1
CA2256230A1 CA002256230A CA2256230A CA2256230A1 CA 2256230 A1 CA2256230 A1 CA 2256230A1 CA 002256230 A CA002256230 A CA 002256230A CA 2256230 A CA2256230 A CA 2256230A CA 2256230 A1 CA2256230 A1 CA 2256230A1
Authority
CA
Canada
Prior art keywords
coding
circuit
bit stream
time information
decoding
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.)
Granted
Application number
CA002256230A
Other languages
French (fr)
Other versions
CA2256230C (en
Inventor
Jiro Katto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Publication of CA2256230A1 publication Critical patent/CA2256230A1/en
Application granted granted Critical
Publication of CA2256230C publication Critical patent/CA2256230C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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]
    • H04N21/20—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
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
    • H04N21/23412—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs for generating or manipulating the scene composition of objects, e.g. MPEG-4 objects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/20—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding
    • H04N19/27—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding involving both synthetic and natural picture components, e.g. synthetic natural hybrid coding [SNHC]
    • 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
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/242—Synchronization processes, e.g. processing of PCR [Program Clock References]
    • 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
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
    • H04N21/43074—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen of additional data with content streams on the same device, e.g. of EPG data or interactive icon with a TV program
    • 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
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/44012—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
    • H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal

Abstract

A coding apparatus of the present invention comprises coding circuit 1 for audio signals, coding circuit 2 for video signals, interface circuit 3 on input of scene data, coding circuit 4 for scene data, composition circuit 5, multiplexing circuit 6, display circuit 7 and clock generating circuit 8. Each of coding circuits 1, 2 and 4 outputs time information representing a decoding timing, and composition circuit 5 outputs time information representing a composition timing.
Multiplexing circuit 6 multiplexes time information together with the compressed data given from each of coding circuits 1, 2 and 4, thereby generating a bit stream.
CA 2256230 1997-12-22 1998-12-17 Coding/decoding apparatus, coding/decoding system and multiplexed bit stream Expired - Fee Related CA2256230C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP36479497A JP3407287B2 (en) 1997-12-22 1997-12-22 Encoding / decoding system
JP364794/1997 1997-12-22

Publications (2)

Publication Number Publication Date
CA2256230A1 true CA2256230A1 (en) 1999-06-22
CA2256230C CA2256230C (en) 2003-08-05

Family

ID=18482684

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2256230 Expired - Fee Related CA2256230C (en) 1997-12-22 1998-12-17 Coding/decoding apparatus, coding/decoding system and multiplexed bit stream

Country Status (5)

Country Link
US (1) US6584125B1 (en)
EP (1) EP0924934B1 (en)
JP (1) JP3407287B2 (en)
CA (1) CA2256230C (en)
DE (1) DE69829935T2 (en)

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Also Published As

Publication number Publication date
JPH11187398A (en) 1999-07-09
DE69829935D1 (en) 2005-06-02
DE69829935T2 (en) 2005-09-29
CA2256230C (en) 2003-08-05
US6584125B1 (en) 2003-06-24
JP3407287B2 (en) 2003-05-19
EP0924934B1 (en) 2005-04-27
EP0924934A1 (en) 1999-06-23

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