CA2100475A1 - Adaptive leak hdtv encoder - Google Patents

Adaptive leak hdtv encoder

Info

Publication number
CA2100475A1
CA2100475A1 CA2100475A CA2100475A CA2100475A1 CA 2100475 A1 CA2100475 A1 CA 2100475A1 CA 2100475 A CA2100475 A CA 2100475A CA 2100475 A CA2100475 A CA 2100475A CA 2100475 A1 CA2100475 A1 CA 2100475A1
Authority
CA
Canada
Prior art keywords
leak
encoder
buffer
fullness
hdtv encoder
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
CA2100475A
Other languages
French (fr)
Other versions
CA2100475C (en
Inventor
Scott Carroll Knauer
Kim Nigel Matthews
Arun Narayan Netravali
Eric David Petajan
Robert James Safranek
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Publication of CA2100475A1 publication Critical patent/CA2100475A1/en
Application granted granted Critical
Publication of CA2100475C publication Critical patent/CA2100475C/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
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/152—Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

An improved predictive encoder where the leak signal is a function of the buffer fullness of the encoder. More specifically, the signals stored in theencoder output buffer are further encoded based on the fullness of the buffer, and information about this further encoding is used in determining the leak factor level.
In accordance with another improvement, this leak factor level is not constrained to granularity that is imposed by the decoder hardware. Removal of the constraints is accomplished by cycling through a sequence of permissible leak levels that averages at the desired level.
CA002100475A 1992-07-27 1993-07-14 Adaptive leak hdtv encoder Expired - Fee Related CA2100475C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US919,792 1992-07-27
US07/919,792 US5331348A (en) 1992-07-27 1992-07-27 Adaptive leak HDTV encoder

Publications (2)

Publication Number Publication Date
CA2100475A1 true CA2100475A1 (en) 1994-01-28
CA2100475C CA2100475C (en) 1998-09-01

Family

ID=25442660

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002100475A Expired - Fee Related CA2100475C (en) 1992-07-27 1993-07-14 Adaptive leak hdtv encoder

Country Status (2)

Country Link
US (1) US5331348A (en)
CA (1) CA2100475C (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5646687A (en) * 1994-12-29 1997-07-08 Lucent Technologies Inc. Temporally-pipelined predictive encoder/decoder circuit and method
US5710595A (en) * 1994-12-29 1998-01-20 Lucent Technologies Inc. Method and apparatus for controlling quantization and buffering for digital signal compression
FR2736743B1 (en) * 1995-07-10 1997-09-12 France Telecom METHOD FOR CONTROLLING THE OUTPUT RATE OF AN ENCODER OF DIGITAL DATA REPRESENTATIVE OF IMAGE SEQUENCES
EP0920217B1 (en) * 1997-11-25 2003-02-12 Deutsche Thomson-Brandt Gmbh Method and apparatus for coding and for decoding a picture sequence
EP0920216A1 (en) * 1997-11-25 1999-06-02 Deutsche Thomson-Brandt Gmbh Method and apparatus for encoding and decoding an image sequence
US6175650B1 (en) 1998-01-26 2001-01-16 Xerox Corporation Adaptive quantization compatible with the JPEG baseline sequential mode
US6252994B1 (en) 1998-01-26 2001-06-26 Xerox Corporation Adaptive quantization compatible with the JPEG baseline sequential mode
US6269120B1 (en) * 1998-03-23 2001-07-31 International Business Machines Corporation Method of precise buffer management for MPEG video splicing
US6480539B1 (en) 1999-09-10 2002-11-12 Thomson Licensing S.A. Video encoding method and apparatus
US20080298232A1 (en) * 2007-05-30 2008-12-04 Silicon Storage Technology, Inc. Systems and methods for wireless transmission and reception of data including processing and buffering features
US20080298242A1 (en) * 2007-05-30 2008-12-04 Yi Fan Systems and methods for transmission and reception of data including processing and buffering features
US8522993B2 (en) 2009-10-05 2013-09-03 Neal Warren Flewelling Advanced household waste and recycling device and method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5164963A (en) * 1990-11-07 1992-11-17 At&T Bell Laboratories Coding for digital transmission
US5134475A (en) * 1990-12-11 1992-07-28 At&T Bell Laboratories Adaptive leak hdtv encoder
US5134477A (en) * 1990-12-11 1992-07-28 At&T Bell Laboratories Hdtv receiver
US5243419A (en) * 1991-10-31 1993-09-07 At&T Bell Laboratories Soft coding for HDTV

Also Published As

Publication number Publication date
US5331348A (en) 1994-07-19
CA2100475C (en) 1998-09-01

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Legal Events

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