Patent
1981-02-04
1984-02-07
Perkey, William B.
354152, 354266, 3542711, 354484, G03B 7085, G03B 726, G03B 1738, G03B 1912
Patent
active
044299729
ABSTRACT:
A droppage in a power source voltage below a prescribed value is prevented by using an electro-magnetic device of low power consumption type in a single lens reflex camera, and at the same time when the power source voltage is lower than the prescribed value, an erroneous function prevent circuit is activated to make the control circuit of a camera electronically inoperative and an indication of warning is made.
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Aizawa Hiroshi
Ito Tadashi
Iura Yukio
Taguchi Tetsuya
Uchidoi Tadanori
Canon Kabushiki Kaisha
Perkey William B.
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