Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1987-05-18
1989-01-24
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358283, 358298, H04N 140
Patent
active
048004421
ABSTRACT:
An apparatus for generating a high quality image from a digital video signal includes a system for gamma correcting the digital video signal with a digital look up table and for converting the resultant digital signal to an analog video signal. Another circuit generates a triangular wave reference pattern signal and a comparator compares the analog video signal with the triangular wave reference pattern signal to form a pulse-width-modulated signal. A raster scanning print engine producing, for example, a laser beam, scans over a recording medium in accordance with the pulse-width-modulated signal, thereby forming an image of high quality on the recording medium of a print engine. This apparatus can also be used with an analog video signal by first converting the analog video signal to a digital video signal with an analog to digital converter.
REFERENCES:
patent: 3197558 (1965-07-01), Ernst
patent: 3230303 (1966-01-01), Macovski
patent: 3393269 (1968-07-01), Zeuthen
patent: 3461229 (1969-08-01), Oppenheimer
patent: 3643016 (1972-02-01), Dattilo
patent: 3882270 (1975-05-01), Ogawa
patent: 3916096 (1975-10-01), Everett
patent: 3965290 (1976-06-01), Tisue
patent: 4040094 (1977-08-01), Everett
patent: 4329717 (1982-05-01), Logie
patent: 4346409 (1982-08-01), Ishida
patent: 4400740 (1983-08-01), Traino
patent: 4467364 (1984-08-01), Konagaya
patent: 4485408 (1984-11-01), Kamizyo
patent: 4535413 (1985-09-01), Shiota
patent: 4593297 (1986-06-01), Suzuki
patent: 4626923 (1986-12-01), Yoshida
"Declaration Submitted Pursuant to 37 C.F.R. .sctn.1.56 and M.P.E.P. .sctn.609" by Applicants.
Science, vol. 224, p. 44
Press release of Demonics Ltd., Feb. 24, 1984.
Four (4) pages prepared on Demonics ETP-1 Electronic Technical Publishing System.
d'Entremont Alice M.
Goldman Craig E.
Riseman, deceased John H.
Smith John J.
Britton Howard W.
Canon Kabushiki Kaisha
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