Photographic information setting apparatus for camera

Details Photographic information setting apparatus for camera Photographic information setting apparatus for camera

1976-05-26

1978-03-28

Adams, Russell E.

354 23D, 354 53, 354 60A, 354 60L, G03B 708, G03B 1702

Patent

active

040818136

ABSTRACT:
An apparatus for setting an exposure control factor into a camera in the form of a digital signal without using a code plate or a plurality of switches. A pulse train is fed to a binary counter through an AND circuit which, upon selective receipt of gating-on and gating-off signals, operates to initiate and terminate flow of pulses therethrough respectively. When the counter has counted the selected number of pulses, the photographer who is viewing a digital display unit cooperative with the counter to detect this pulse number may actuate a button to produce the gating-off signal, thereby a corresponding desired value of the exposure control factor is set into the camera as a function of the number of pulses counted.

REFERENCES:
patent: 3971048 (1976-07-01), Ito et al.
patent: 3999191 (1976-12-01), Saito et al.

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