Camera shutter control device

Details Camera shutter control device Camera shutter control device

1986-09-12

1988-05-10

Adams, Russell E.

354458, 3542381, 354413, G03B 7093

Patent

active

047439351

ABSTRACT:
In a shutter speed control device for a camera, a shutter speed is changed by varying a period of time from a reference time instant to a time of shutter opening. A first signal is produced which is representative of a duration from the reference time instant to the time of shutter opening, and a second signal is produced which is representative of a desired shutter speed. A detection signal is produced in response to the first and second signals, which is representative of the time of shutter closing corresponding to the desired shutter speed.

REFERENCES:
patent: 3798664 (1974-03-01), Matsuda
patent: 4192595 (1980-03-01), Wakazono et al.
patent: 4422747 (1983-12-01), Uchidoi et al.
patent: 4456353 (1984-06-01), Mizokami
patent: 4479704 (1984-10-01), Masunaga

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