White balance control device and method using a variable region

Details White balance control device and method using a variable region White balance control device and method using a variable region

1996-08-15

1998-05-12

Peng, John K.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348224, 348225, H04N 973

Patent

active

057513490

ABSTRACT:
A white balance control device is provided for use in a video camera or a still video camera in which white balance control signals are controlled so that an object may be photographed without the occurrence of color failure. A user selects the light source to be employed. A microcomputer of the white balance control device detects a difference between integral averaged values for two color difference signals R-Y and B-Y and a reference value. The integral averaged values are to be equalized until this difference is within a predetermined value. The integral averaged values are also to be maintained within a variable region in accordance with the selected light source. Use of the variable region insures that deterioration of the reproduced color does not occur even when there is a difference between a selected light source and an actual color temperature.

REFERENCES:
patent: 5040054 (1991-08-01), Schmidt et al.
patent: 5099316 (1992-03-01), Ogawa
patent: 5146316 (1992-09-01), Suzuki
patent: 5177599 (1993-01-01), Takagi et al.
patent: 5223921 (1993-06-01), Haruki et al.
patent: 5260774 (1993-11-01), Takayama
patent: 5264921 (1993-11-01), Jinnai
patent: 5267026 (1993-11-01), Kawahara et al.
patent: 5270802 (1993-12-01), Takagi et al.
patent: 5272521 (1993-12-01), Tatsumi
patent: 5274440 (1993-12-01), Miyazaki
patent: 5282022 (1994-01-01), Haruki et al.
patent: 5298979 (1994-03-01), Kim
patent: 5313277 (1994-05-01), Suzuki
patent: 5319449 (1994-06-01), Saito et al.

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