Camera data communication device

Details Camera data communication device Camera data communication device

Filed on

1995-05-16

Date issued

1996-01-02

Examiner

Gray, David M.

Other Related Categories

35428912, G03B 1700

Type

Patent

Status

active

Patent number

054813263

Description

ABSTRACT:
In a camera data communication system for performing data communication operations between a detachable external accessory and a camera body through a data communication line (or lines), and for performing data communication operations between a camera data communication device and a circuit unit in the camera body, through the data communication line (or lines), a voltage level detector generates a malfunction signal which indicates a malfunction when the voltage level of the data communication line is abnormal, before the start of a data communication operation, and a control portion inhibits data communication operations in response to the malfunction signal.

REFERENCES:
patent: 4737812 (1988-04-01), Hasegawa et al.
patent: 5063403 (1991-11-01), Yokonuma et al.
patent: 5117251 (1992-05-01), Ishimura et al.

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