FR2257183A1 - Systeme de transmission fac-simile d'une image - Google Patents

Systeme de transmission fac-simile d'une image

Info

Publication number
FR2257183A1
FR2257183A1 FR7400270A FR7400270A FR2257183A1 FR 2257183 A1 FR2257183 A1 FR 2257183A1 FR 7400270 A FR7400270 A FR 7400270A FR 7400270 A FR7400270 A FR 7400270A FR 2257183 A1 FR2257183 A1 FR 2257183A1
Authority
FR
France
Prior art keywords
transmission system
image transmission
facsimile image
facsimile
transmission
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
FR7400270A
Other languages
English (en)
Other versions
FR2257183B1 (fr
Inventor
Martin De Loye
Didier Leonard
Claude Cardot
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
Original Assignee
Alcatel CIT SA
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 filed Critical Alcatel CIT SA
Priority to FR7400270A priority Critical patent/FR2257183B1/fr
Priority to US05/536,892 priority patent/US3956578A/en
Priority to JP49149301A priority patent/JPS50103208A/ja
Priority to GB14575A priority patent/GB1466211A/en
Priority to DE2500055A priority patent/DE2500055C2/de
Priority to BE1006493A priority patent/BE826205A/fr
Priority to NL7502621A priority patent/NL7502621A/xx
Priority to LU71992A priority patent/LU71992A1/xx
Publication of FR2257183A1 publication Critical patent/FR2257183A1/fr
Application granted granted Critical
Publication of FR2257183B1 publication Critical patent/FR2257183B1/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Transmission Control (AREA)
  • Image Processing (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
FR7400270A 1974-01-04 1974-01-04 Systeme de transmission fac-simile d'une image Expired FR2257183B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR7400270A FR2257183B1 (fr) 1974-01-04 1974-01-04 Systeme de transmission fac-simile d'une image
US05/536,892 US3956578A (en) 1974-01-04 1974-12-27 Facsimile system for the transmission of picture
JP49149301A JPS50103208A (fr) 1974-01-04 1974-12-28
DE2500055A DE2500055C2 (de) 1974-01-04 1975-01-02 Faksimile-uebertragungssystem
GB14575A GB1466211A (en) 1974-01-04 1975-01-02 Facsimile system of transmitting a picture
BE1006493A BE826205A (fr) 1974-01-04 1975-03-03 Systeme de transmission fac-simile d'une image
NL7502621A NL7502621A (nl) 1974-01-04 1975-03-05 Stelsel voor facsimile overdracht van een beeld.
LU71992A LU71992A1 (fr) 1974-01-04 1975-03-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7400270A FR2257183B1 (fr) 1974-01-04 1974-01-04 Systeme de transmission fac-simile d'une image

Publications (2)

Publication Number Publication Date
FR2257183A1 true FR2257183A1 (fr) 1975-08-01
FR2257183B1 FR2257183B1 (fr) 1976-11-26

Family

ID=9133110

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7400270A Expired FR2257183B1 (fr) 1974-01-04 1974-01-04 Systeme de transmission fac-simile d'une image

Country Status (8)

Country Link
US (1) US3956578A (fr)
JP (1) JPS50103208A (fr)
BE (1) BE826205A (fr)
DE (1) DE2500055C2 (fr)
FR (1) FR2257183B1 (fr)
GB (1) GB1466211A (fr)
LU (1) LU71992A1 (fr)
NL (1) NL7502621A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50128410A (fr) * 1974-03-28 1975-10-09
US4150401A (en) * 1975-10-03 1979-04-17 Kokusai Denshin Denwa Kabushiki Kaisha Facsimile signal converter
US4107662A (en) * 1976-02-17 1978-08-15 Hitachi, Ltd. Character generator for visual display devices
DE2640157C2 (de) * 1976-09-07 1982-10-07 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren und Anordnung zum redundanzvermindernden Codieren von Bildern
DE2640140C2 (de) * 1976-09-07 1982-10-07 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren und Anordnung zur redundanzvermindernden Bildcodierung
US4193092A (en) * 1978-06-21 1980-03-11 Xerox Corporation Image interpolation system
FR2430139A1 (fr) * 1978-06-28 1980-01-25 Labo Electronique Physique Dispositif de compression de signaux binaires et systeme de transmission codee de fac-similes equipe de ce dispositif
US4306249A (en) * 1978-12-20 1981-12-15 British Broadcasting Corporation Digital signal processing method and apparatus
US4571632A (en) * 1983-08-26 1986-02-18 The United States Of America As Represented By The Secretary Of The Army Alternate line interpolation method and apparatus
JPS60261252A (ja) * 1984-06-08 1985-12-24 Dainippon Screen Mfg Co Ltd 画像信号の密度変換方法
JPS63236472A (ja) * 1987-03-25 1988-10-03 Fujitsu Ltd 画像情報符号化処理装置
JP2534276B2 (ja) * 1987-10-09 1996-09-11 インターナショナル・ビジネス・マシーンズ・コーポレーション オリジナル・イメ−ジのペル信号の処理方法
NL1000489C2 (nl) * 1995-06-02 1996-12-03 Oce Nederland Bv Werkwijze en inrichting voor comprimeren en decomprimeren van digitale beeldsignalen.
US5914678A (en) * 1996-08-23 1999-06-22 Nec Corporation Triplet decoding circuit and triplet decoding method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2905756A (en) * 1956-11-30 1959-09-22 Bell Telephone Labor Inc Method and apparatus for reducing television bandwidth
US2921124A (en) * 1956-12-10 1960-01-12 Bell Telephone Labor Inc Method and apparatus for reducing television bandwidth
US3051778A (en) * 1960-10-20 1962-08-28 Bell Telephone Labor Inc Sequential scan television with line interpolation
DE2055234A1 (de) * 1970-11-10 1972-05-18 Licentia Gmbh Verfahren und Schaltungen zum Codieren von Bildsignalen
GB1409364A (en) * 1972-02-17 1975-10-08 Dacom Inc Dual-line data compression method and system for compressing transmitting and reproducing facsimile data
US3801737A (en) * 1972-07-10 1974-04-02 Ricoh Kk Video signal compression and expansion system and devices therefor
US3849592A (en) * 1973-02-05 1974-11-19 Litton Systems Inc Graphic data redundancy reduction for text and half-tone optical facsimile system
DE7622478U1 (de) * 1976-07-16 1977-02-03 J. Lorch Gesellschaft & Co Kg, 7035 Waldenbuch Gehaeuse fuer druckluftaufbereitungsgeraete

Also Published As

Publication number Publication date
DE2500055C2 (de) 1983-05-26
BE826205A (fr) 1975-09-03
NL7502621A (nl) 1976-09-07
GB1466211A (en) 1977-03-02
JPS50103208A (fr) 1975-08-15
DE2500055A1 (de) 1975-07-10
US3956578A (en) 1976-05-11
LU71992A1 (fr) 1976-02-04
FR2257183B1 (fr) 1976-11-26

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Legal Events

Date Code Title Description
ST Notification of lapse