Exposure control device of a camera

Details Exposure control device of a camera Exposure control device of a camera

1984-09-13

1986-12-23

Adams, Russell E.

354458, 354432, 354464, G03B 708

Patent

active

046309179

ABSTRACT:
A camera in which the exposure of a film is controlled includes means for making a digital signal, converting means for converting the digital signal from the making means into an analog signal and putting out the analog signal, means for detecting the brightness of an object to be photographed and producing an analog brightness signal indicative of the detected brightness of the object to be photographed, means for comparing the analog signal from the converting means with the brightness signal, the means being adapted to put out a comparison signal when the analog signal from the converting means and the brightness signal assume a predetermined relation, the making means putting out to the converting means a digital signal indicative of exposure information concerned in the control of the exposure of the film on the basis of the digital signal made by the making means when the comparison signal is put out, the converting means converting the digital signal indicative of the exposure information into an analog signal, and means for controlling the exposure of the film on the basis of the exposure information converted into the analog signal.

REFERENCES:
patent: 3899788 (1975-08-01), Toyoda
patent: 4072962 (1978-02-01), Maida
patent: 4462670 (1984-07-01), Maida

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