GB2238444B - Digital coder - Google Patents

Digital coder

Info

Publication number
GB2238444B
GB2238444B GB9019903A GB9019903A GB2238444B GB 2238444 B GB2238444 B GB 2238444B GB 9019903 A GB9019903 A GB 9019903A GB 9019903 A GB9019903 A GB 9019903A GB 2238444 B GB2238444 B GB 2238444B
Authority
GB
United Kingdom
Prior art keywords
digital coder
coder
digital
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.)
Expired - Lifetime
Application number
GB9019903A
Other versions
GB9019903D0 (en
GB2238444A (en
Inventor
Andrew David Raine Cotton
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.)
British Broadcasting Corp
Original Assignee
British Broadcasting 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 British Broadcasting Corp filed Critical British Broadcasting Corp
Publication of GB9019903D0 publication Critical patent/GB9019903D0/en
Publication of GB2238444A publication Critical patent/GB2238444A/en
Application granted granted Critical
Publication of GB2238444B publication Critical patent/GB2238444B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/184—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
    • 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
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform 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
    • H04N19/60—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
    • 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
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
    • 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
    • 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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
GB9019903A 1989-09-21 1990-09-12 Digital coder Expired - Lifetime GB2238444B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8921319A GB8921319D0 (en) 1989-09-21 1989-09-21 Digital coder

Publications (3)

Publication Number Publication Date
GB9019903D0 GB9019903D0 (en) 1990-10-24
GB2238444A GB2238444A (en) 1991-05-29
GB2238444B true GB2238444B (en) 1993-09-29

Family

ID=10663396

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8921319A Pending GB8921319D0 (en) 1989-09-21 1989-09-21 Digital coder
GB9019903A Expired - Lifetime GB2238444B (en) 1989-09-21 1990-09-12 Digital coder

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8921319A Pending GB8921319D0 (en) 1989-09-21 1989-09-21 Digital coder

Country Status (1)

Country Link
GB (2) GB8921319D0 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9103381L (en) * 1991-11-15 1993-03-08 Televerket PROCEDURE AND DEVICE FOR IMAGE Coding WITH STEP HEIGHT SELECTION IN THE QUANTIZER
FR2688958B1 (en) * 1992-03-17 1997-06-27 Thomson Csf VERY LOW-RATE BI-STANDARD IMAGE CODING PROCESS AND ENCODER-DECODER FOR THE IMPLEMENTATION OF THIS PROCESS.
US5675384A (en) * 1995-10-03 1997-10-07 Nec Usa, Inc. VBR MPEG video encoding for ATM networks with dynamic bandwidth renegotiation
EP0945001B1 (en) * 1996-12-18 2003-04-23 Thomson Consumer Electronics, Inc. A multiple format video signal processor
JPH10208393A (en) * 1997-01-27 1998-08-07 Sony Corp Method and device for digital signal coding
JP3395892B2 (en) * 1999-05-06 2003-04-14 日本電気株式会社 Video encoding device
DE10008699C1 (en) * 2000-02-24 2001-05-23 Daimler Chrysler Ag Analogue-digital signal conversion method has input signal transformed via linear function with resulting coefficients used for retransformation into digital region via second linear function

Also Published As

Publication number Publication date
GB9019903D0 (en) 1990-10-24
GB2238444A (en) 1991-05-29
GB8921319D0 (en) 1989-11-08

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20100911