Cameras having a coordinated energy supply system for shutter re

Details Cameras having a coordinated energy supply system for shutter re Cameras having a coordinated energy supply system for shutter re

1978-08-23

1980-04-29

Hix, L. T.

354 38, G03B 700

Patent

active

042003741

ABSTRACT:
A camera having a control system for coordinating the release actuator and electronic shutter with either one of a battery and an electric generator incorporated therein. As the battery has lost electrical energy, the removal of the battery from the camera enables the coordinating system to restrict the manual setting of an exposure time within faster limits and to supply electrical power from the generator to at least that portion of the automatic exposure control circuit which contributes to manual exposure control during the second stroke of the shutter release button, provided that the necessary mechanical energy for driving the generator was created and stored on suitable means during the preceding cycle of film winding operation.

REFERENCES:
patent: 3636840 (1972-01-01), Harvey et al.
patent: 4015198 (1977-03-01), Iwashita et al.
patent: 4091395 (1978-05-01), Kozuki et al.

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