Photography – Having wireless remote control circuit
Patent
1996-01-11
1998-02-24
Spyrou, Cassandra C.
Photography
Having wireless remote control circuit
396155, G03B 1503
Patent
active
057219710
ABSTRACT:
A wireless slave electronic photoflash device is located separately from a camera body, and responsive to light emission of a master electronic flash unit built in or connected to the camera body, for emitting light synchronized therewith. The slave flash device includes a discharge tube, a trigger section responsive to a trigger signal for causing the discharge tube to emit light, a photodetector adapted to detect an optical signal from the master flash device, a one-shot section which is retriggerable and generates and issues a signal during a predetermined time period in response to the receipt of a signal from the photodetector, and a trigger signal output section which generates and issues the trigger signal based on the signal from the one-shot section and the signal from the photodetector.
REFERENCES:
patent: 4049996 (1977-09-01), Vital et al.
patent: 4155029 (1979-05-01), Yamaoka
patent: 4368966 (1983-01-01), Hagyuda
patent: 4626093 (1986-12-01), Matsui et al.
patent: 4771301 (1988-09-01), Yamada
patent: 5023639 (1991-06-01), Ushiro et al.
patent: 5153632 (1992-10-01), Maida et al.
patent: 5159379 (1992-10-01), Shirane et al.
patent: 5164759 (1992-11-01), Yasukawa
patent: 5283610 (1994-02-01), Sasaki
patent: 5384611 (1995-01-01), Tsuji et al.
Chapik Daniel
Olympus Optical Co,. Ltd.
Spyrou Cassandra C.
Weinstein Louis
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