GB1570914A - Method and apparatus for bandwidth compression - Google Patents

Method and apparatus for bandwidth compression Download PDF

Info

Publication number
GB1570914A
GB1570914A GB280177A GB280177A GB1570914A GB 1570914 A GB1570914 A GB 1570914A GB 280177 A GB280177 A GB 280177A GB 280177 A GB280177 A GB 280177A GB 1570914 A GB1570914 A GB 1570914A
Authority
GB
United Kingdom
Prior art keywords
logic
signal
image
picture element
scanning
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
GB280177A
Other languages
English (en)
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.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial Co Ltd
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 Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Publication of GB1570914A publication Critical patent/GB1570914A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
    • H04N1/415—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which the picture-elements are subdivided or grouped into fixed one-dimensional or two-dimensional blocks

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Image Processing (AREA)
GB280177A 1976-01-24 1977-01-24 Method and apparatus for bandwidth compression Expired GB1570914A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP687676A JPS5290216A (en) 1976-01-24 1976-01-24 Picture signal band compressing method

Publications (1)

Publication Number Publication Date
GB1570914A true GB1570914A (en) 1980-07-09

Family

ID=11650416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB280177A Expired GB1570914A (en) 1976-01-24 1977-01-24 Method and apparatus for bandwidth compression

Country Status (4)

Country Link
JP (1) JPS5290216A (enrdf_load_stackoverflow)
DE (1) DE2702746C3 (enrdf_load_stackoverflow)
FR (1) FR2339304A1 (enrdf_load_stackoverflow)
GB (1) GB1570914A (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1128645A (en) * 1978-07-31 1982-07-27 Yasuhiro Yamazaki Transmission method and system for facsimile signal
CA1128646A (en) * 1978-11-22 1982-07-27 Yasuhiro Yamazaki Coding method for facsimile signal
JPS59178077A (ja) * 1983-03-28 1984-10-09 Dainippon Screen Mfg Co Ltd ２値画像のデ−タ圧縮方法
DE4028927A1 (de) * 1990-08-07 1992-02-13 Dirr Josef Verfahren fuer die codierung und uebertragung von information, insbesondere von vorlagen und bildern und fuer das fernsehen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1409364A (en) * 1972-02-17 1975-10-08 Dacom Inc Dual-line data compression method and system for compressing transmitting and reproducing facsimile data
JPS4968612A (enrdf_load_stackoverflow) * 1972-11-04 1974-07-03
JPS5016420A (enrdf_load_stackoverflow) * 1973-06-08 1975-02-21

Also Published As

Publication number Publication date
DE2702746C3 (de) 1981-11-12
DE2702746B2 (enrdf_load_stackoverflow) 1981-01-29
DE2702746A1 (de) 1977-08-04
FR2339304B1 (enrdf_load_stackoverflow) 1981-08-21
JPS5290216A (en) 1977-07-29
FR2339304A1 (fr) 1977-08-19

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Legal Events

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PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee