FR2340654B1 - - Google Patents

Info

Publication number
FR2340654B1
FR2340654B1 FR7703243A FR7703243A FR2340654B1 FR 2340654 B1 FR2340654 B1 FR 2340654B1 FR 7703243 A FR7703243 A FR 7703243A FR 7703243 A FR7703243 A FR 7703243A FR 2340654 B1 FR2340654 B1 FR 2340654B1
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.)
Expired
Application number
FR7703243A
Other versions
FR2340654A1 (fr
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of FR2340654A1 publication Critical patent/FR2340654A1/fr
Application granted granted Critical
Publication of FR2340654B1 publication Critical patent/FR2340654B1/fr
Granted 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
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/17—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa the scanning speed being dependent on content of picture
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Transmission Control (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
FR7703243A 1976-02-05 1977-02-04 Dispositif de transmission de fac-similes Granted FR2340654A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1205376A JPS5295113A (en) 1976-02-05 1976-02-05 Band compression transmission system

Publications (2)

Publication Number Publication Date
FR2340654A1 FR2340654A1 (fr) 1977-09-02
FR2340654B1 true FR2340654B1 (fr) 1983-01-07

Family

ID=11794850

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7703243A Granted FR2340654A1 (fr) 1976-02-05 1977-02-04 Dispositif de transmission de fac-similes

Country Status (8)

Country Link
US (1) US4158861A (fr)
JP (1) JPS5295113A (fr)
AU (1) AU514216B2 (fr)
CA (1) CA1119285A (fr)
DE (1) DE2704772C3 (fr)
ES (1) ES455697A1 (fr)
FR (1) FR2340654A1 (fr)
GB (1) GB1573753A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492978A (en) * 1979-03-12 1985-01-08 Westinghouse Electric Corp. Transmission system for TV signals
JPS57115072A (en) * 1981-01-07 1982-07-17 Fuji Xerox Co Ltd Method for reading information of document reader
US4760462A (en) * 1981-03-26 1988-07-26 Ricoh Company, Ltd. Heat sensitive recording system in facsimile communication
BE889996A (nl) * 1981-08-18 1981-12-16 Belge Lampes Mat Electr Mble Facsimile overdrachtsinrichting
US4447830A (en) * 1981-09-10 1984-05-08 Xerox Corporation Image scanning apparatus and method
JPS5911063A (ja) * 1982-07-12 1984-01-20 Ricoh Co Ltd フアクシミリ装置
JPS59215174A (ja) * 1983-05-20 1984-12-05 Canon Inc フアクシミリ装置
US4729034A (en) * 1985-06-27 1988-03-01 Netexpress Systems, Inc. Method and apparatus for selection of a coding reference line for two-dimensional coding of image data representing screened images
JPH0656958B2 (ja) * 1986-07-03 1994-07-27 キヤノン株式会社 情報デ−タ復元装置
JPS6358448U (fr) * 1986-10-06 1988-04-19
US5181126A (en) * 1989-02-09 1993-01-19 Murata Kikai Kabushiki Kaisha Reading device for facsimile apparatus
JPH04504043A (ja) * 1989-12-22 1992-07-16 イーストマン・コダック・カンパニー 画像データの高速圧縮

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991267A (en) * 1970-01-26 1976-11-09 Eg & G, Inc. Method for producing a compressed digital representation of a visible image
US3643016A (en) * 1970-05-11 1972-02-15 Magnavox Co Facsimile system with data compression by {37 white space skipping{38
JPS5132488B2 (fr) * 1971-12-30 1976-09-13
GB1409365A (en) * 1972-02-17 1975-10-08 Dacom Inc Dual-line data compression method and system for compressing transmitting and reproducing facsimile data
US3947627A (en) * 1972-10-30 1976-03-30 Matsushita Electric Industrial Company, Limited Facsimile system
JPS5222494B2 (fr) * 1972-12-15 1977-06-17
US3830966A (en) * 1973-01-03 1974-08-20 Eg & G Inc Apparatus and method for transmitting a bandwidth compressed digital signal representation of a visible image
US3955045A (en) * 1974-03-08 1976-05-04 Exxon Research And Engineering Company Method and apparatus for time compression of facsimile transmissions
JPS5949750B2 (ja) * 1974-06-11 1984-12-04 富士通株式会社 可変走査線密度制御方式
JPS586343B2 (ja) * 1974-06-11 1983-02-04 富士通株式会社 カヘンソウサセンミツドセイギヨホウシキ

Also Published As

Publication number Publication date
DE2704772B2 (de) 1981-01-22
CA1119285A (fr) 1982-03-02
GB1573753A (en) 1980-08-28
DE2704772C3 (de) 1981-11-12
FR2340654A1 (fr) 1977-09-02
JPS5734948B2 (fr) 1982-07-26
ES455697A1 (es) 1978-07-16
AU2197777A (en) 1978-08-10
US4158861A (en) 1979-06-19
JPS5295113A (en) 1977-08-10
DE2704772A1 (de) 1977-08-11
AU514216B2 (en) 1981-01-29

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Legal Events

Date Code Title Description
ST Notification of lapse