DE3571179D1 - Code converting system and method for band compression of digital signals - Google Patents

Code converting system and method for band compression of digital signals

Info

Publication number
DE3571179D1
DE3571179D1 DE8585307873T DE3571179T DE3571179D1 DE 3571179 D1 DE3571179 D1 DE 3571179D1 DE 8585307873 T DE8585307873 T DE 8585307873T DE 3571179 T DE3571179 T DE 3571179T DE 3571179 D1 DE3571179 D1 DE 3571179D1
Authority
DE
Germany
Prior art keywords
digital signals
converting system
band compression
code converting
code
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
Application number
DE8585307873T
Other languages
English (en)
Inventor
Akihiro Furukawa
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
Application granted granted Critical
Publication of DE3571179D1 publication Critical patent/DE3571179D1/de
Expired 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/46—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind
    • H03M7/48—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind alternating with other codes during the code conversion process, e.g. run-length coding being performed only as long as sufficientlylong runs of digits of the same kind are present

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
DE8585307873T 1984-10-30 1985-10-30 Code converting system and method for band compression of digital signals Expired DE3571179D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59228631A JPS61107818A (ja) 1984-10-30 1984-10-30 エントロピ−符号化方式とその装置

Publications (1)

Publication Number Publication Date
DE3571179D1 true DE3571179D1 (en) 1989-07-27

Family

ID=16879364

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585307873T Expired DE3571179D1 (en) 1984-10-30 1985-10-30 Code converting system and method for band compression of digital signals

Country Status (4)

Country Link
US (1) US4706265A (de)
EP (1) EP0180469B1 (de)
JP (1) JPS61107818A (de)
DE (1) DE3571179D1 (de)

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Also Published As

Publication number Publication date
EP0180469B1 (de) 1989-06-21
JPS6412126B2 (de) 1989-02-28
EP0180469A2 (de) 1986-05-07
US4706265A (en) 1987-11-10
EP0180469A3 (en) 1987-07-01
JPS61107818A (ja) 1986-05-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee