White balance processing device

Details White balance processing device White balance processing device

1992-03-23

1992-12-29

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 29, 358170, 358174, H04N 973

Patent

active

051756153

ABSTRACT:
A white balance processing device comprises an amplifier which permits selection of one of a plurality of discrete amplification degrees; and an A-D converter the conversion gain which is variable by changing a reference voltage value. The selection of the amplification degree of the amplifier and the setting of the reference voltage value of the A-D converter are arranged to be performed in association with each other for continuous white balance control.

REFERENCES:
patent: 4247868 (1981-01-01), Onodera
patent: 4679065 (1987-07-01), Umezawa
patent: 4734762 (1988-03-01), Aoki
patent: 4745461 (1988-05-01), Shirai
patent: 4860092 (1989-08-01), Hieda
patent: 4942458 (1990-07-01), Miyajima

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