CA2077521A1 - Method and arrangement of adaptively multiplexing data of a plurality ofvideo channels - Google Patents

Method and arrangement of adaptively multiplexing data of a plurality ofvideo channels

Info

Publication number
CA2077521A1
CA2077521A1 CA2077521A CA2077521A CA2077521A1 CA 2077521 A1 CA2077521 A1 CA 2077521A1 CA 2077521 A CA2077521 A CA 2077521A CA 2077521 A CA2077521 A CA 2077521A CA 2077521 A1 CA2077521 A1 CA 2077521A1
Authority
CA
Canada
Prior art keywords
data
channel data
frames
channels
video
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
CA2077521A
Other languages
French (fr)
Other versions
CA2077521C (en
Inventor
Hirohisa Shiojiri
Toshio Koga
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
Individual
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 Individual filed Critical Individual
Publication of CA2077521A1 publication Critical patent/CA2077521A1/en
Application granted granted Critical
Publication of CA2077521C publication Critical patent/CA2077521C/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
    • H04N21/23406—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving management of server-side video buffer
    • 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
    • H04N21/2368—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]
    • H04N21/40—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
    • H04N21/4347—Demultiplexing of several video streams

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Television Systems (AREA)

Abstract

A method of adaptively multiplexing a plurality of video channel data is disclosed. A multiplexed data includes a plurality of frames each of which contains a plurality of sub-frames. The video channel data are adaptively allocated to the sub-frames. A memory occupancy value of a buffer, which is provided in each of a plurality of video channels, is determined. The buffer is arranged to receive the corresponding video information. A plurality of control signals are produced each of which indicates the memory occupancy value of the corresponding buffer. Following this, a look-up table is accessed which includes a plurality of video channel assignment data for assigning the video channel data to the sub-frames. Thus, one of the channel data assignment data is derived from the look-up table. The video channel data are then multiplexed using one of said channel data assignment data derived from the look-up table.
CA 2077521 1991-09-03 1992-09-03 Method and arrangement of adaptively multiplexing data of a plurality ofvideo channels Expired - Fee Related CA2077521C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3-221934 1991-09-03
JP22193491A JP2861518B2 (en) 1991-09-03 1991-09-03 Adaptive multiplexing method

Publications (2)

Publication Number Publication Date
CA2077521A1 true CA2077521A1 (en) 1993-03-04
CA2077521C CA2077521C (en) 1998-10-06

Family

ID=16774452

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2077521 Expired - Fee Related CA2077521C (en) 1991-09-03 1992-09-03 Method and arrangement of adaptively multiplexing data of a plurality ofvideo channels

Country Status (4)

Country Link
US (1) US5550589A (en)
JP (1) JP2861518B2 (en)
AU (1) AU667817B2 (en)
CA (1) CA2077521C (en)

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EP1542383A1 (en) * 1994-05-20 2005-06-15 General Instrument Corporation Method for dynamically allocating communication channel bandwidth between competing applications

Also Published As

Publication number Publication date
JP2861518B2 (en) 1999-02-24
AU2215492A (en) 1994-04-14
CA2077521C (en) 1998-10-06
US5550589A (en) 1996-08-27
JPH0564175A (en) 1993-03-12
AU667817B2 (en) 1996-04-18

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Effective date: 20040903