Accessory and motor drive device for camera, and camera system

Details Accessory and motor drive device for camera, and camera system Accessory and motor drive device for camera, and camera system

1998-09-08

2000-09-12

Gray, David M.

Photography

Battery insertion/removal/depletion responsive

396301, 396388, 396539, G03B 1724

Patent

active

061189499

ABSTRACT:
A motor drive device capable of being connected with a camera body includes a communication line for communicating information on an operation mode of the motor drive device from the camera body to the motor drive device, a switch connected in series with the communication line and arranged to be closed when a battery connected to the motor drive device is a specific type of battery, and a control circuit which controls the motor drive device to operate in an operation mode based on the information on the operation mode communicated from the camera body when the switch is closed and to operate in a predetermined operation mode when the switch is opened.

REFERENCES:
patent: 4455075 (1984-06-01), Iwashita et al.
patent: 4645325 (1987-02-01), Inoue et al.
patent: 4697909 (1987-10-01), Machida et al.

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