Control device for a camera shutter and a control method therefo

Photography – Exposure control circuit – Look-up table memory

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Details

396245, G03B 7093

Patent

active

058624201

ABSTRACT:
A control device for a camera shutter comprises a diaphragm value setting device for setting a predetermined diaphragm value of the shutter, an exposure value setting device for setting an exposure value of the shutter, a storing device for storing an opening size of the shutter, output timings of signals for controlling opening and closing operations of the shutter, and an exposure value of the shutter corresponding to the set diaphragm value, and a control apparatus for controlling the opening and closing operations of the shutter on the basis of output signals from the diaphragm value setting device, the exposure value setting device and the storing device. The control apparatus calculates the output timings of the signals for controlling the opening and closing operations of the shutter on the basis of the exposure value of the shutter outputted from the exposure value setting device, and controls the opening and closing operations of the shutter on the basis of the results of the calculation.

REFERENCES:
patent: 5255049 (1993-10-01), Akimoto et al.
patent: 5745808 (1998-04-01), Tintera

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