Video output signal correcting method and apparatus

Details Video output signal correcting method and apparatus Video output signal correcting method and apparatus

1986-10-06

1988-05-31

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358284, H04N 110

Patent

active

047485159

ABSTRACT:
A method and an apparatus for generating correcting signals for correcting the video output signal of an electro-optical document reading apparatus of the line-wise scanning type are disclosed. The method of the invention employs a successive approximation procedure for determining the correcting factors pertaining to pixels within each scanning line, the checking cycles of the procedures corresponding with each correction word however are nested.

REFERENCES:
patent: 4220978 (1980-09-01), Rhyins
patent: 4228468 (1980-10-01), Nagano
patent: 4242578 (1980-12-01), Britz
patent: 4578711 (1986-03-01), White
Signal Processing, by M. Togashi, et al., 1984 IEEE International Solid-State Circuits Conference, Digest of Technical Papers, First Edition, Feb. 1984, pp. 204-205.

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