Automatic exposure control device performing weighted light measurement
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United States of America Patent
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Apr 23, 1996
Issued Date -
N/A
app pub date -
Sep 1, 1994
filing date -
Dec 28, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic exposure control device comprising a light measuring circuit for performing a weighted light measurement for a light measuring area set in a predetermined position within an image sensing plane, a discrimination circuit for detecting and evaluating the level of a luminance component in a video signal in each of a plurality of detecting areas set within the image sensing plane and for discriminating a photographic state while tracking a subject, and a compensation circuit for compensating a light measurement control signal produced by the light measuring circuit in accordance with a discriminating result made by the discriminating circuit.
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