Control circuit for camera

Abstract

Abstract PURPOSE: To miniaturize a control circuit while making it possible to set the delay time of a self timer freely over a wide range by obtaining a release signal by supplying the set time of the self timer to a programmable timer. CONSTITUTION: An ASA speed, stop-down amount and self time delay time are set by are set by setters 12', 13' and 14', and the quantity of external light by photometric amplifier 11; and they are applied to multiplexer 20, whose output is supplied to digital arithmetic circuit 17, so that the exposure value will be determined. In this case, the time of the self timer is set by an analog signal and supplied to programmable timer 16a of sequence control part 16 via multiplexer 20, so that release signal SRL will be obtained by the output of the multiplexer. COPYRIGHT: (C)1981,JPO&Japio

Inventors

• 👤 Mikio Kobayashi

Bibliographic Details