Camera system with means for detecting the condition of back-up

Details Camera system with means for detecting the condition of back-up Camera system with means for detecting the condition of back-up

1990-06-18

1991-08-20

Perkey, W. B.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

354484, 354268, 307 66, 365229, G03B 726, G03B 1718, G03B 1738, G11C 0000

Patent

active

050418610

ABSTRACT:
A camera with circuitry, a main power source for supplying electric power to the circuitry, a back-up power source for supplying electric power to the circuitry independently from the main power source, a detector for detecting the condition of the back-up power source to produce a warning signal when the back-up power source can not supply sufficient electric power to the circuitry, starting the operation of the detector when the main power source has recovered, setting data to the circuitry in accordance with a manual operation and interrupting the operation of the warning signal when the data setting is operated.

REFERENCES:
patent: 4451742 (1984-05-01), Aswell
patent: 4508248 (1986-04-01), Imaizumi

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