Camera warning shake system

Details Camera warning shake system Camera warning shake system

1981-12-21

1984-07-31

Adams, Russell E.

G03B 708

Patent

active

044626711

ABSTRACT:
A camera has a taking lens and a charge-coupled device that detects light through the lens. A warning signal generating circuit includes a capacitor, comparator and an LED or buzzer actuated by the output from the comparator. The reference voltage associated with the capacitor is variable to provide warning time limits commensurate with taking lenses of different focal length.

REFERENCES:
patent: 3399307 (1968-08-01), Levin
patent: 4246476 (1981-01-01), Stauffer
patent: 4264161 (1981-04-01), Hosoe et al.
patent: 4273430 (1981-06-01), Fritsche et al.
patent: 4320948 (1982-03-01), Hosoe et al.

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