Photographic operation control circuit for camera

Details Photographic operation control circuit for camera Photographic operation control circuit for camera

1979-12-20

1984-07-10

Rubinson, G. Z.

35417311, 354484, G03B 1718

Patent

active

044589964

ABSTRACT:
In the disclosed camera exposure control, data recording and film winding are performed sequentially and the system is protected from battery voltage drop arising from the effective increase in consumption of electrical energy necessary to make each exposure as compared with the ordinary camera, by detecting the battery level upon occurrence of a prescribed phase of the operating cycle. In one embodiment, the battery is also checked at a subsequent step of the cycle (for example, film winding operation is permitted only when the battery level is above the predetermined level). According to an embodiment of the invention, a sequence control circuit controls the photographic operation sequentially.

REFERENCES:
patent: 4025935 (1977-05-01), Wagensonner et al.
patent: 4091395 (1978-05-01), Kozuki et al.
patent: 4126874 (1978-11-01), Suzuki et al.
patent: 4201463 (1980-05-01), Harigaya et al.
patent: 4235538 (1980-11-01), Uchidoi et al.
patent: 4269489 (1981-05-01), Takimoto

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