Electronic watch

Details Electronic watch Electronic watch

1980-07-16

1983-05-10

Miska, Vit W.

Horology: time measuring systems or devices

Electrical time base

Solid state oscillating circuit type

368218, 318696, G06F 104, G04C 300

Patent

active

043826911

ABSTRACT:
In an analog electronic watch having a calendar display the power required during change of the calendar display, about 6 hours out of 24, is greater than at other times. In order to effect economy in power consumption, the pulse for driving the watch motor during the time other than the period in which the calendar display is being changed is only sufficient to drive the time indicating means. In case the motor fails to step when such pulse is applied, this is detected by a detecting circuit and a corrective drive pulse is applied to the motor so as to drive it.

REFERENCES:
patent: 3812670 (1974-05-01), Nikaido et al.
patent: 3855781 (1974-12-01), Chihara et al.
patent: 4032827 (1977-06-01), Dobratz et al.
patent: 4114364 (1978-09-01), Takahashi
patent: 4212156 (1980-07-01), Kawamura et al.
patent: 4312059 (1982-01-01), Mandai et al.

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