FR1452663A - Procédé de réduction de bande passante dans la transmission d'images - Google Patents

Procédé de réduction de bande passante dans la transmission d'images

Info

Publication number
FR1452663A
FR1452663A FR21885A FR21885A FR1452663A FR 1452663 A FR1452663 A FR 1452663A FR 21885 A FR21885 A FR 21885A FR 21885 A FR21885 A FR 21885A FR 1452663 A FR1452663 A FR 1452663A
Authority
FR
France
Prior art keywords
image transmission
reducing bandwidth
bandwidth
reducing
image
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
FR21885A
Other languages
English (en)
Inventor
Andre Edouard Joseph Chatelon
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.)
Laboratoire Central de Telecommunications SA
Original Assignee
Laboratoire Central de Telecommunications 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 Laboratoire Central de Telecommunications SA filed Critical Laboratoire Central de Telecommunications SA
Priority to FR21885A priority Critical patent/FR1452663A/fr
Application granted granted Critical
Publication of FR1452663A publication Critical patent/FR1452663A/fr
Priority to US550767A priority patent/US3478163A/en
Priority to NL6608626A priority patent/NL6608626A/xx
Priority to GB27937/66A priority patent/GB1127208A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/493—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems by transition coding, i.e. the time-position or direction of a transition being encoded before transmission
    • 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
    • H04N1/417—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Facsimiles In General (AREA)
  • Image Processing (AREA)
FR21885A 1965-06-23 1965-06-23 Procédé de réduction de bande passante dans la transmission d'images Expired FR1452663A (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR21885A FR1452663A (fr) 1965-06-23 1965-06-23 Procédé de réduction de bande passante dans la transmission d'images
US550767A US3478163A (en) 1965-06-23 1966-05-17 Reduced time transmission system
NL6608626A NL6608626A (fr) 1965-06-23 1966-06-22
GB27937/66A GB1127208A (en) 1965-06-23 1966-06-22 Facsimile transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR21885A FR1452663A (fr) 1965-06-23 1965-06-23 Procédé de réduction de bande passante dans la transmission d'images

Publications (1)

Publication Number Publication Date
FR1452663A true FR1452663A (fr) 1966-04-15

Family

ID=8582816

Family Applications (1)

Application Number Title Priority Date Filing Date
FR21885A Expired FR1452663A (fr) 1965-06-23 1965-06-23 Procédé de réduction de bande passante dans la transmission d'images

Country Status (4)

Country Link
US (1) US3478163A (fr)
FR (1) FR1452663A (fr)
GB (1) GB1127208A (fr)
NL (1) NL6608626A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2426261A1 (de) * 1973-06-01 1975-01-02 Philips Nv Faksimilesystem

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643019A (en) * 1970-04-22 1972-02-15 Rca Corp Variable length coding method and apparatus
US4281312A (en) * 1975-11-04 1981-07-28 Massachusetts Institute Of Technology System to effect digital encoding of an image
NL8301264A (nl) * 1983-04-11 1984-11-01 Philips Nv Inrichting voor het regelsgewijs comprimeren van binaire data van een beeldveld- en aftastinrichting voor een document voorzien voor zulk comprimeren.
EP0607484B1 (fr) * 1993-01-20 1998-09-09 Samsung Electronics Co. Ltd. Méthode et dispositif pout le codage et le décodage de données d'image

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3305841A (en) * 1963-09-30 1967-02-21 Alphanumeric Inc Pattern generator
US3347981A (en) * 1964-03-18 1967-10-17 Polaroid Corp Method for transmitting digital data in connection with document reproduction system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2426261A1 (de) * 1973-06-01 1975-01-02 Philips Nv Faksimilesystem

Also Published As

Publication number Publication date
NL6608626A (fr) 1966-12-27
US3478163A (en) 1969-11-11
GB1127208A (en) 1968-09-18

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