Apparatus for storing a voltage analogous to an exposure paramet

Details Apparatus for storing a voltage analogous to an exposure paramet Apparatus for storing a voltage analogous to an exposure paramet

1976-07-01

1978-03-21

Adams, Russell E.

354 50, 354 60A, G03B 962, G03B 708

Patent

active

040806111

ABSTRACT:
Apparatus for storing a voltage analogous to an exposure parameter in photographic cameras with an electronic timer and with electric exposure measurement, having the characteristics that an analog-to-digital converter is provided as the storage unit, containing a digital-to-analog converter, the output voltage of which is fed to a comparator wherein this output voltage is compared with the voltage delivered by the exposure meter part. The signal obtained at the comparator output in the case of voltage identity stops the analog-to-digital converter and the voltage remaining at the output of the digital-to-analog converter controls the respective exposure parameter in the camera.

REFERENCES:
patent: 3603799 (1971-09-01), Nobusawa
patent: 3703130 (1972-11-01), Watanabe
patent: 3727526 (1973-04-01), Hinds
patent: 3742826 (1973-07-01), Kohtani
patent: 3748979 (1973-07-01), Wada
patent: 3988069 (1976-10-01), Kitaura

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