1983-06-21
1984-05-22
Gellner, Michael L.
3541451, 354418, 354429, 354476, 354482, G03B 7099, G03B 1505
Patent
active
044498020
ABSTRACT:
An adapter device for interconnecting a light adjusting flash device and a camera. The adapter device includes a first terminal for connection to a charge completion signal circuit in the flash device, a second terminal for connection to a mode selection circuit in the camera and a transistor which is turned on in response to a charge completion signal to change the electrical condition at the second terminal to operate the mode selecting circuit to select the flashlight mode. The adapter device further includes a third terminal which is connected to an aperture signal forming circuit in the camera and is connectable to the second terminal to transmit a flash aperture value signal to an aperture control circuit in the camera.
REFERENCES:
patent: 3631779 (1972-01-01), Hori et al.
patent: 3868701 (1975-02-01), Kawasaki et al.
patent: 4095242 (1978-06-01), Tsunekawa et al.
Canon Kabushiki Kaisha
Gellner Michael L.
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