System and method for controlling exposure of a video camera by

Details System and method for controlling exposure of a video camera by System and method for controlling exposure of a video camera by

1995-12-27

1999-03-09

Garber, Wendy

Television

Camera, system and detail

Optics

348169, 348229, 348234, 348256, 358520, 396233, H04N 5225, H04N 5235, H04N 5238

Patent

active

058807829

ABSTRACT:
A video camera system and method for automatically controlling the exposure of a desired object image. A plurality of average luminance values are respectively determined by a plurality of light measurement units. A plurality of reference luminance values are obtained from a plurality of reference value circuits. Selected ones of the average luminance values and the reference luminance values are utilized to form control signals. Such control signals control the video camera so as to maintain a proper exposure of the desired object.

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patent: 5412487 (1995-05-01), Ryuji et al.
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