Camera system

Details Camera system Camera system

1994-07-19

1996-06-04

Gellner, Michael L.

354286, G03B 300, G03B 1700

Patent

active

055238181

ABSTRACT:
The present invention provides, on the camera body side thereof, a pulse signal generator for generating continuous pulse signal trains, the frequency of which is four times the frequency employed for driving a supersonic motor and a pulse width which corresponds to the pulse width of an AC voltage for driving the supersonic motor. Furthermore, a unit detachable from the camera body and including the supersonic motor generates the AC voltage for driving the supersonic motor which corresponds to the pulse signal.

REFERENCES:
patent: 4833358 (1989-05-01), Suzuki et al.
patent: 4952834 (1990-08-01), Okada
patent: 5013982 (1991-05-01), Sasaki
patent: 5053798 (1991-10-01), Ohara et al.
patent: 5093680 (1992-03-01), Suzuki et al.
patent: 5162708 (1992-11-01), Naito et al.
patent: 5179311 (1993-01-01), Suganuma
patent: 5196879 (1993-03-01), Hata
patent: 5198732 (1993-03-01), Morimoto
patent: 5255043 (1993-10-01), Kawasaki

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