Electronic timepiece

Details Electronic timepiece Electronic timepiece

1978-07-24

1981-07-21

Weldon, Ulysses

Horology: time measuring systems or devices

Chronological

With power monitor

368 73, 368203, 368204, G04B 126

Patent

active

042802083

ABSTRACT:
An electronic timepiece having a battery lifetime detection mechanism is provided with a control circuit and external operation member the suitable manipulation of which permits a battery lifetime warning indication, produced in response to a signal from the detection mechanism, to be temporarily displayed in the normal time display mode, transferred to an permanently displayed in another display mode, or converted to an audible warning tone if suitable acoustic means are provided.

REFERENCES:
patent: 3745761 (1973-07-01), Tsuruishi
patent: 3894278 (1975-07-01), Gerum
patent: 3991553 (1976-11-01), Bergey et al.
patent: 4014164 (1977-03-01), Fujita
patent: 4129981 (1978-12-01), Nomura et al.
patent: 4175377 (1979-11-01), Ichikawa

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