Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1981-12-02
1983-09-13
Orsino, Jr., Joseph A.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358280, H04N 110, H04N 140
Patent
active
044045972
ABSTRACT:
A two dimensional radiometric compensation system for scanning devices of the type employing one or more lamps for sweeping a line-like beam of light across the document original to be scanned. Brightness profiles for various x and y points along the scan path and which are designed to compensate for deficiencies in the illumination components, are stored in memory. Where the scanning device comprises a raster input scanner with linear array for reading the document original, the brightness profiles are addressed in synchronization with the output of image signals by the array and the brightness compensating values obtained are used to modify the image signals output by the array.
REFERENCES:
patent: 2338646 (1944-01-01), Kessler
patent: 2753394 (1956-01-01), White
patent: 2981793 (1961-04-01), Hurford
patent: 3610119 (1971-10-01), Gerber et al.
patent: 3784740 (1974-01-01), Copland
patent: 3800079 (1974-03-01), McNeil et al.
patent: 3878328 (1975-04-01), Marie et al.
patent: 3902011 (1975-08-01), Pieters et al.
patent: 4174528 (1979-11-01), White
patent: 4200934 (1980-04-01), Hofmann
patent: 4258396 (1981-03-01), Scott
McMullen Frederick E.
Orsino Jr. Joseph A.
Xerox Corporation
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