White balance adjusting circuit

Details White balance adjusting circuit White balance adjusting circuit

1990-10-03

1991-05-28

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 973

Patent

active

050198947

ABSTRACT:
A white balance adjusting circuit which detects the ratio of color components in an illumination light around an object, independently from an image sensing system, and controls the gain of each color signal coming from the image sensing system, characterized in that it comprises means for correcting a signal indicative of the ratio of color components according to the color signal, not gain-controlled, coming from the image sensing system.

REFERENCES:
patent: 4931856 (1990-06-01), Hieda et al.
Application Ser. No. 336,046.

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