FR1420686A - Système de transmission bélinographique - Google Patents

Système de transmission bélinographique

Info

Publication number
FR1420686A
FR1420686A FR998301A FR998301A FR1420686A FR 1420686 A FR1420686 A FR 1420686A FR 998301 A FR998301 A FR 998301A FR 998301 A FR998301 A FR 998301A FR 1420686 A FR1420686 A FR 1420686A
Authority
FR
France
Prior art keywords
belinographic
transmission system
transmission
belinographic 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.)
Expired
Application number
FR998301A
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.)
Xerox Ltd
Original Assignee
Rank Xerox 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
Priority claimed from US329640A external-priority patent/US3394222A/en
Application filed by Rank Xerox Ltd filed Critical Rank Xerox Ltd
Priority to FR998301A priority Critical patent/FR1420686A/fr
Application granted granted Critical
Publication of FR1420686A publication Critical patent/FR1420686A/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
    • H04N1/40—Picture signal circuits
    • H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
    • H04N1/4072—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original
    • 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
    • H04N1/40—Picture signal circuits
    • H04N1/40056—Circuits for driving or energising particular reading heads or original illumination means
    • 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
    • H04N1/40—Picture signal circuits
    • H04N1/403—Discrimination between the two tones in the picture signal of a two-tone original

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
FR998301A 1963-12-11 1964-12-10 Système de transmission bélinographique Expired FR1420686A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR998301A FR1420686A (fr) 1963-12-11 1964-12-10 Système de transmission bélinographique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US329640A US3394222A (en) 1963-12-11 1963-12-11 Facsimile communication system
FR998301A FR1420686A (fr) 1963-12-11 1964-12-10 Système de transmission bélinographique

Publications (1)

Publication Number Publication Date
FR1420686A true FR1420686A (fr) 1965-12-10

Family

ID=26211689

Family Applications (1)

Application Number Title Priority Date Filing Date
FR998301A Expired FR1420686A (fr) 1963-12-11 1964-12-10 Système de transmission bélinographique

Country Status (1)

Country Link
FR (1) FR1420686A (fr)

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