Photography – Battery insertion/removal/depletion responsive
Patent
1998-08-04
2000-03-21
Perkey, W. B.
Photography
Battery insertion/removal/depletion responsive
396301, 396529, G03B 726
Patent
active
060411899
ABSTRACT:
In a camera system composed of a camera capable of containing a battery therein and an accessory capable of being detachably mounted on the camera and being supplied with electric power from the camera, communication is possible between the camera and the accessory, and the accessory, upon receiving an instruction from the camera, performs an operation according to the received instruction. The camera system is provided with a circuit which sends an instruction designating a value corresponding to electric power usable by the accessory from the camera to the accessory, to decide a working power or voltage usable in the accessory.
REFERENCES:
patent: 5727241 (1998-03-01), Yamano et al.
Canon Kabushiki Kaisha
Perkey W. B.
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