BE626969A - - Google Patents

Info

Publication number
BE626969A
BE626969A BE626969A BE626969A BE626969A BE 626969 A BE626969 A BE 626969A BE 626969 A BE626969 A BE 626969A BE 626969 A BE626969 A BE 626969A BE 626969 A BE626969 A BE 626969A
Authority
BE
Belgium
Application number
BE626969A
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 filed Critical
Publication of BE626969A publication Critical patent/BE626969A/xx

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
    • H04N1/403—Discrimination between the two tones in the picture signal of a two-tone 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
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/36—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device for synchronising or phasing transmitter and receiver
    • 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
    • H04N1/4076—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on references outside the picture

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Image Signal Circuits (AREA)
BE626969A 1962-02-26 1963-01-09 BE626969A (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US175445A US3223778A (en) 1962-02-26 1962-02-26 Facsimile system

Publications (1)

Publication Number Publication Date
BE626969A true BE626969A (it) 1963-05-02

Family

ID=22640243

Family Applications (1)

Application Number Title Priority Date Filing Date
BE626969A BE626969A (it) 1962-02-26 1963-01-09

Country Status (5)

Country Link
US (1) US3223778A (it)
BE (1) BE626969A (it)
DE (1) DE1412727B2 (it)
GB (1) GB1028304A (it)
NL (1) NL287137A (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3394220A (en) * 1963-12-11 1968-07-23 Xerox Corp High resolution circuitry for facsimile transmission
US3394222A (en) * 1963-12-11 1968-07-23 Xerox Corp Facsimile communication system
US3394221A (en) * 1963-12-11 1968-07-23 Xerox Corp Noise level circuitry for facsimile transmission
US3472958A (en) * 1966-08-01 1969-10-14 Xerox Corp Facsimile system
US3564140A (en) * 1966-10-03 1971-02-16 Nippon Electric Co Phase detection and synchronizing system for facsimile and the like
US3792927A (en) * 1967-08-17 1974-02-19 Bunker Ramo Scanning means having dead-time compensation for interrupted scanning periods
GB1332891A (en) * 1969-10-31 1973-10-10 Image Analysing Computers Ltd Image analysis
US3641259A (en) * 1970-08-03 1972-02-08 Hazeltine Corp Flarelight compensator
US3761610A (en) * 1971-02-16 1973-09-25 Graphics Sciences Inc High speed fascimile systems
US3723649A (en) * 1971-04-27 1973-03-27 Electronic Image Syst Corp Adaptive binary state decision system
DE2430762A1 (de) * 1974-06-26 1976-01-15 Gruner & Jahr Verfahren zur informationsverarbeitung fuer die herstellung einer druckform und vorrichtung zur durchfuehrung des verfahrens
NL175777C (nl) * 1977-05-27 1984-12-17 Nederlanden Staat Schakeling voor de eliminatie van de achtergrondhelderheidsvariatie van een videosignaal.
US4227218A (en) * 1978-12-14 1980-10-07 Exxon Research & Engineering Co. Method and apparatus for generating a digital facsimile signal
US4468705A (en) * 1981-12-07 1984-08-28 Exxon Research And Engineering Co. Data transition enhancement
US5025480A (en) * 1987-03-23 1991-06-18 Eastman Kodak Company Background referencing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2730567A (en) * 1950-06-15 1956-01-10 Times Facsimile Corp Facsimile scanning method and apparatus for predetermined signal output and contrast
BE533494A (it) * 1953-11-20
US2855513A (en) * 1955-11-30 1958-10-07 Ibm Clipping circuit with clipping level automatically set by average input level
US2999925A (en) * 1959-01-28 1961-09-12 Page Comm Engineers Inc Variable decision threshold computer

Also Published As

Publication number Publication date
US3223778A (en) 1965-12-14
DE1412727A1 (de) 1968-10-10
DE1412727B2 (de) 1970-07-30
GB1028304A (en) 1966-05-04
NL287137A (it) 1965-02-25

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