Apparatus using brightness information from a photometering circ

Details Apparatus using brightness information from a photometering circ Apparatus using brightness information from a photometering circ

1993-12-21

1995-02-14

Kostak, Victor R.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348655, H04N 973, H04N 904

Patent

active

053899695

ABSTRACT:
A white balance adjuster of a camera comprises a photometering unit for metering a brightness of an object based on a light directed to an image pickup unit of the camera, a color metering unit for metering a color temperature of a periphery of the camera, a plurality of white balance control tables and a selector for selecting one of the white balance control tables in accordance with object brightness information produced by the photometering unit and brightness converted information of the periphery of the camera produced by the color metering unit. A color balance of an output signal of the image pickup unit is adjusted in accordance with the selected white balance control table.

REFERENCES:
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patent: 4774564 (1988-09-01), Konishi
patent: 4805010 (1989-02-01), Shroyer et al.
patent: 4814864 (1989-03-01), Pritchard
patent: 4918519 (1989-04-01), Suzuki et al.
patent: 4992855 (1991-02-01), Takai
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patent: 5021874 (1991-06-01), Tsugita
patent: 5065232 (1991-11-01), Kondo
patent: 5099313 (1992-03-01), Suemoto et al.
patent: 5289268 (1994-02-01), Suzuki et al.

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