White balance control system for color television camera with au

Details White balance control system for color television camera with au White balance control system for color television camera with au

1983-06-21

1986-03-04

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 973

Patent

active

045743037

ABSTRACT:
In a color television camera of the type in which the white balance is subjected to automatic follow-up adjustment during the shooting in accordance with the color temperature of an object illuminating light detected by light sensors provided independent of the imaging means, the adjusted condition of the white balance is maintained constant as desired. The TV camera includes change-over switch for switching the white balance control mode between the automatic follow-up mode and the memory mode, memory means for locking the white balance which has been adjusted automatically in the then current condition in response to the change-over to the memory mode, and a controller whereby when the shooting preparatory operation is started with the memory mode being selected the white balance control mode is always changed over to the automatic follow-up mode first thereby effecting the white balance adjustment. Particularly, this change-over to the automatic mode occurs when the power source is coupled to the camera.

REFERENCES:
patent: 3627911 (1971-12-01), Kubota
patent: 4219841 (1980-08-01), Nishimura et al.
patent: 4454532 (1984-06-01), Itani et al.

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