CH262573A - Method for automatically obtaining a halftone reproduction of an original document, and apparatus for its implementation. - Google Patents

Method for automatically obtaining a halftone reproduction of an original document, and apparatus for its implementation.

Info

Publication number
CH262573A
CH262573A CH262573DA CH262573A CH 262573 A CH262573 A CH 262573A CH 262573D A CH262573D A CH 262573DA CH 262573 A CH262573 A CH 262573A
Authority
CH
Switzerland
Prior art keywords
implementation
original document
automatically obtaining
halftone reproduction
halftone
Prior art date
Application number
Other languages
French (fr)
Inventor
Lange Maurice
Original Assignee
Ets Edouard Belin
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 Ets Edouard Belin filed Critical Ets Edouard Belin
Publication of CH262573A publication Critical patent/CH262573A/en

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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction
    • H04N1/036—Details of scanning heads ; Means for illuminating the original for picture information reproduction for optical reproduction
    • 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
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
    • H04N1/4056—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern the pattern varying in one dimension only, e.g. dash length, pulse width modulation [PWM]
CH262573D 1947-04-24 1947-05-08 Method for automatically obtaining a halftone reproduction of an original document, and apparatus for its implementation. CH262573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR56772T 1947-04-24

Publications (1)

Publication Number Publication Date
CH262573A true CH262573A (en) 1949-07-15

Family

ID=8690925

Family Applications (1)

Application Number Title Priority Date Filing Date
CH262573D CH262573A (en) 1947-04-24 1947-05-08 Method for automatically obtaining a halftone reproduction of an original document, and apparatus for its implementation.

Country Status (4)

Country Link
US (1) US2524531A (en)
CH (1) CH262573A (en)
FR (2) FR928110A (en)
GB (1) GB643330A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2796534A (en) * 1951-01-23 1957-06-18 Wilbespan Res Labs Inc Photo-electric tone generator
US2892124A (en) * 1955-11-09 1959-06-23 Rabinow Jacob Noise discriminating, high gain automatic headlight dimmer
US2978590A (en) * 1956-04-20 1961-04-04 Intelligent Machines Res Corp Scanning apparatus
US3196279A (en) * 1962-06-12 1965-07-20 Control Company Inc Comp Photosensitive digital shaft encoder
US3334226A (en) * 1963-12-30 1967-08-01 Exxon Production Research Co Apparatus for simulataneously measuring fluid density and flow rate on a single photographic film

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB294508A (en) * 1927-04-14 1928-07-16 Arthur Oswald Thomas Yeo Improvements in or relating to musical instruments
US2063998A (en) * 1930-12-13 1936-12-15 Bell Telephone Labor Inc Electro-optical system
FR743655A (en) * 1931-03-04 1933-04-03
US2152348A (en) * 1936-08-07 1939-03-28 William G H Finch Telepicture recording system
US2287033A (en) * 1938-05-28 1942-06-23 Columbia Broadcasting Syst Inc Method and apparatus for television
US2274841A (en) * 1940-04-16 1942-03-03 Rca Corp Photo radio system
US2294643A (en) * 1940-07-05 1942-09-01 Interchenical Corp Method and apparatus for reproducing pictures
US2357938A (en) * 1941-11-25 1944-09-12 Interchem Corp System for controlled intermittent illumination
US2347015A (en) * 1942-09-17 1944-04-18 Press Ass Inc Means of compensating for drift of photoelectric devices and associated circuits
US2432123A (en) * 1945-04-05 1947-12-09 Bell Telephone Labor Inc Translation of visual symbols

Also Published As

Publication number Publication date
FR928110A (en) 1947-11-19
FR56772E (en) 1952-10-06
GB643330A (en) 1950-09-20
US2524531A (en) 1950-10-03

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