FR2172400A1 - - Google Patents

Info

Publication number
FR2172400A1
FR2172400A1 FR7305664A FR7305664A FR2172400A1 FR 2172400 A1 FR2172400 A1 FR 2172400A1 FR 7305664 A FR7305664 A FR 7305664A FR 7305664 A FR7305664 A FR 7305664A FR 2172400 A1 FR2172400 A1 FR 2172400A1
Authority
FR
France
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
FR7305664A
Other languages
French (fr)
Other versions
FR2172400B1 (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.)
Dacom Inc
Original Assignee
Dacom 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 Dacom Inc filed Critical Dacom Inc
Publication of FR2172400A1 publication Critical patent/FR2172400A1/fr
Application granted granted Critical
Publication of FR2172400B1 publication Critical patent/FR2172400B1/fr
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)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
FR7305664A 1972-02-17 1973-02-16 Expired FR2172400B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22714972A 1972-02-17 1972-02-17

Publications (2)

Publication Number Publication Date
FR2172400A1 true FR2172400A1 (en) 1973-09-28
FR2172400B1 FR2172400B1 (en) 1978-06-23

Family

ID=22851959

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7305664A Expired FR2172400B1 (en) 1972-02-17 1973-02-16

Country Status (6)

Country Link
JP (1) JPS5424604B2 (en)
CA (1) CA1002175A (en)
DE (1) DE2307511C2 (en)
FR (1) FR2172400B1 (en)
GB (2) GB1409364A (en)
IT (1) IT979204B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2257183B1 (en) * 1974-01-04 1976-11-26 Cit Alcatel FACSIMILE IMAGE TRANSMISSION SYSTEM
JPS51132015A (en) * 1974-12-23 1976-11-16 Fujitsu Ltd Picture signal encoding transmission system
JPS5290216A (en) * 1976-01-24 1977-07-29 Mita Industrial Co Ltd Picture signal band compressing method
JPS5295113A (en) * 1976-02-05 1977-08-10 Fujitsu Ltd Band compression transmission system
JPS5826713B2 (en) * 1976-06-28 1983-06-04 日本電信電話株式会社 Sequential boundary differential coding transmission method for binary signals
JPS5666971A (en) * 1979-11-05 1981-06-05 Dainippon Screen Mfg Co Ltd Picture data compressing method
DE3326224C2 (en) * 1983-07-21 1987-04-16 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Circuit arrangement for controlling a display device
JPS60251775A (en) * 1984-05-28 1985-12-12 Ricoh Co Ltd Data transfer system
JPH0671312B2 (en) * 1989-05-29 1994-09-07 キヤノン株式会社 Fax machine
DE4028927A1 (en) * 1990-08-07 1992-02-13 Dirr Josef Coding and transmission of originals and images - combines code elements of several lines or channels into code word

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1546604A (en) * 1966-08-15 1968-11-22 Xeros Corp Phototelegraph communication installation
US3502806A (en) * 1966-08-01 1970-03-24 Xerox Corp Modified run length data reduction system
FR2053965A5 (en) * 1969-07-02 1971-04-16 Dacom Inc

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5123408B1 (en) * 1971-07-10 1976-07-16

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502806A (en) * 1966-08-01 1970-03-24 Xerox Corp Modified run length data reduction system
FR1546604A (en) * 1966-08-15 1968-11-22 Xeros Corp Phototelegraph communication installation
FR2053965A5 (en) * 1969-07-02 1971-04-16 Dacom Inc

Also Published As

Publication number Publication date
DE2307511A1 (en) 1973-09-06
JPS5424604B2 (en) 1979-08-22
AU5227973A (en) 1974-08-22
IT979204B (en) 1974-09-30
JPS4985913A (en) 1974-08-17
DE2307511C2 (en) 1983-05-11
FR2172400B1 (en) 1978-06-23
GB1409365A (en) 1975-10-08
GB1409364A (en) 1975-10-08
CA1002175A (en) 1976-12-21

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Legal Events

Date Code Title Description
ST Notification of lapse