1988-03-21
1989-05-16
Adams, Russell E.
354412, G03B 726
Patent
active
048314064
ABSTRACT:
A power circuit for a camera comprising a power activation means containing a release switch for activating the camera, a step-up means for starting to step up the voltage of a battery by the power activation means, a CPU which is driven by an output of the step-up means so as to control the operation of the camera and which has a reset terminal for stopping the operation, and a voltage detecting means for detecting the output voltage of the step-up means and for generating a detection signal when the voltage is lower than a set value which has previously been determined, the set value being set to correspond to the limiting operation voltage of the CPU and, when the output voltage of the step-up means is lower than the limiting operation voltage of the CPU, the CPU being reset and stopped to operate.
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patent: 4621914 (1986-11-01), Taniguchi et al.
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Saito Hiroyuki
Seki Youichi
Taniwaki Michio
Yamazaki Hiroshi
Adams Bruce L.
Adams Russell E.
Seikosha Co. Ltd.
Wilks Van C.
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