Image pickup apparatus

Details Image pickup apparatus Image pickup apparatus

2007-05-01

2007-05-01

Ye, Lin (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S224100, C396S051000

Reexamination Certificate

active

10640609

ABSTRACT:
An image pickup apparatus such as a video camera has the capability of automatic white balance control whereby the white balance is quickly adjusted for any object even just after an operator has turned on a power supply. An image pickup element converts an optical image of an object into an electrical image signal. The image signal is applied to a signal processing circuit and separated into a luminance signal and color signals. The separated color signals or the R and B signals are amplified by gain control circuits under the control of the correction signals supplied by a correction signal computing part, and then applied to a color-difference signal forming circuit which in turn produces color-difference signals (R-Y) and (B-Y). An encoder circuit generates a television signal in the standard form from the above color-difference signals and the luminance signal. In this processing, the white balance is adjusted according to a white balance control signal generated on the basis of information about a state of illuminance onto an object picked up last time and stored in a data storing part.

REFERENCES:
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patent: 5555022 (1996-09-01), Haruki et al.
patent: 5831672 (1998-11-01), Takei
patent: 6108037 (2000-08-01), Takei
patent: 6522353 (2003-02-01), Saito et al.

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