Television – Camera – system and detail – Optics
Patent
1994-09-23
1997-04-15
Boudreau, Leo
Television
Camera, system and detail
Optics
348229, 354410, H04N 5238
Patent
active
056214626
ABSTRACT:
In an image pickup device capable of effecting the exposure control with plural control parameters such as the iris aperture, shutter speed and gain, the set range of the control parameters is divided into plural areas according to the phototaking condition, and the exposure control information is operated by varying one of the plural control parameters while fixing other control parameters in each of the plural divided areas. Thus optimum exposure control is rendered always possible according to the phototaking situation or condition. Also since the variable parameter is selected according to the phototaking situation, the magnitude of calculation required in the control circuit does not increase in each situation, and compact and rapid control can be realized.
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Kyuma Kenji
Takahashi Koji
Tamura Kyoji
Tsuda Yuji
Boudreau Leo
Canon Kabushiki Kaisha
Shalwala Bipin
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