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Patent Searching and Data

Document Type and Number:
Japanese Patent JP2774291
Kind Code:
PURPOSE:To eliminate a fear to lose a shutter releasing chance even for an object with fast motion by setting a solid-state image pickup element at an operable state before setting a video signal processing means at the operable state. CONSTITUTION:When a TRIG1 signal is impressed on a system control circuit 18 by half-depressing a release switch 19, an SSG(synchronizing signal generation circuit) 11, a shutter driving circuit 13, a diaphragm driving circuit 14, a stroboscope control circuit 15, a pattern photometry and exposure control circuit 17 are operated, and also, a pre-photometric circuit 6 is driven, and pre- photometry to perform the photometry of the luminance of the object prior to exposure is performed. When the release switch 10 is fully depressed, a TRIG2 signal is supplied to the system control circuit 18. In such a way, it is possible to complete exposure control at early stages.

Kijima Takayuki
Application Number:
Publication Date:
July 09, 1998
Filing Date:
November 17, 1988
Export Citation:
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Olympus Optical Co., Ltd.
International Classes:
G03B7/08; H04N5/228; H04N5/232; H04N5/235; (IPC1-7): H04N5/235
Domestic Patent References:
Attorney, Agent or Firm:
Susumu Ito