FR2266381A1 - Differential numerical video signal coder - compresses signal difference and then transcodes - Google Patents

Differential numerical video signal coder - compresses signal difference and then transcodes

Info

Publication number
FR2266381A1
FR2266381A1 FR7410347A FR7410347A FR2266381A1 FR 2266381 A1 FR2266381 A1 FR 2266381A1 FR 7410347 A FR7410347 A FR 7410347A FR 7410347 A FR7410347 A FR 7410347A FR 2266381 A1 FR2266381 A1 FR 2266381A1
Authority
FR
France
Prior art keywords
subtractor
difference
transcodes
information
coder
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
FR7410347A
Other languages
English (en)
French (fr)
Other versions
FR2266381B1 (enExample
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.)
Alcatel CIT SA
Nokia Inc
Original Assignee
Alcatel CIT SA
Nokia 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 Alcatel CIT SA, Nokia Inc filed Critical Alcatel CIT SA
Priority to FR7410347A priority Critical patent/FR2266381A1/fr
Publication of FR2266381A1 publication Critical patent/FR2266381A1/fr
Application granted granted Critical
Publication of FR2266381B1 publication Critical patent/FR2266381B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M3/00—Conversion of analogue values to or from differential modulation
    • H03M3/04—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM]
    • H03M3/042—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM] with adaptable step size, e.g. adaptive differential pulse code modulation [ADPCM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
FR7410347A 1974-03-26 1974-03-26 Differential numerical video signal coder - compresses signal difference and then transcodes Granted FR2266381A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7410347A FR2266381A1 (en) 1974-03-26 1974-03-26 Differential numerical video signal coder - compresses signal difference and then transcodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7410347A FR2266381A1 (en) 1974-03-26 1974-03-26 Differential numerical video signal coder - compresses signal difference and then transcodes

Publications (2)

Publication Number Publication Date
FR2266381A1 true FR2266381A1 (en) 1975-10-24
FR2266381B1 FR2266381B1 (enExample) 1976-12-17

Family

ID=9136822

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7410347A Granted FR2266381A1 (en) 1974-03-26 1974-03-26 Differential numerical video signal coder - compresses signal difference and then transcodes

Country Status (1)

Country Link
FR (1) FR2266381A1 (enExample)

Also Published As

Publication number Publication date
FR2266381B1 (enExample) 1976-12-17

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse