Contrast control circuit

Details Contrast control circuit Contrast control circuit

1985-11-25

1987-05-05

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358168, 358284, H04N 557

Patent

active

046636676

ABSTRACT:
A contrast control circuit for use in an electronic image printing system for adjusting the contrast of an analog electronic image information signal without changing the maximum and minimum brightness levels thereof in order to maintain the exposure of a photosensitive material such as photographic film within its determined range of sensitivity.

REFERENCES:
patent: 3804981 (1974-04-01), Avins
patent: 4213155 (1980-07-01), Miienchow
patent: 4279003 (1981-07-01), Schulz

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