System for signalling the termination of the lifetime of a batte

Details System for signalling the termination of the lifetime of a batte System for signalling the termination of the lifetime of a batte

1978-12-04

1981-04-14

Miska, Vit W.

Horology: time measuring systems or devices

Chronological

With power monitor

368 71, 368 72, G04B 126, G04B 2500

Patent

active

042623499

ABSTRACT:
A system for signalling the termination of the lifetime of a battery for an electronic timepiece is disclosed. The system includes a hand display device, an electro-optical display device, a battery voltage detecting circuit adapted to produce a signal when voltage of the battery lowers below a predetermined value, and means for modulating the time display pulse to be applied to one of the display devices in response to the signal generated in the battery voltage detecting circuit, thereby to modifying the time display for informing the end of the battery lifetime.

REFERENCES:
patent: 3898790 (1975-08-01), Takamune et al.
patent: 4014164 (1977-03-01), Fujita
patent: 4074515 (1978-02-01), Asano

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