Camera capable of adjusting white balance during underwater phot

Details Camera capable of adjusting white balance during underwater phot Camera capable of adjusting white balance during underwater phot

1994-06-02

1995-08-01

Groody, James J.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348 81, 354 64, H04N 5225, H04N 5235

Patent

active

054383633

ABSTRACT:
An electronic still camera is equipped with a white balance sensor and a white balance adjustment circuit so that when photographs are taken underwater (whether only the subject or both the camera and subject are underwater) the white balance in the vicinity of the camera can be measured and then used by the adjustment circuit to provide pictures having properly balanced colors. In one embodiment, a control circuit calculates a gain amount to be applied to the different color signals detected by an image sensor, and then the adjustment circuit uses these gains to adjust the image signals. The camera also may be equipped with an underwater discrimination sensor to determine whether the camera is underwater.

REFERENCES:
patent: 4085421 (1978-04-01), Gilmour
patent: 4470680 (1984-09-01), Inagaki
patent: 4542959 (1985-09-01), Kreutzig
patent: 5283632 (1994-02-01), Suzuki et al.
patent: 5319449 (1994-06-01), Saito
patent: 5325185 (1994-06-01), Tsuchiva

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