Electronic timepiece

Details Electronic timepiece Electronic timepiece

1977-07-07

1979-03-06

Schaefer, Robert K.

58 855, G04C 300

Patent

active

041423607

ABSTRACT:
Control circuitry for an electronic timepiece that is capable of producing a signal representative of the timing rate of the electronic timepiece's time standard and the amount that the timing rate of the electronic timepiece is varied, is provided. Control circuitry is positioned intermediate divider circuitry capable of producing an adjusted low frequency time signal and a time display that displays time in response to the adjusted low frequency signal being applied thereto. The control circuitry is adapted to apply the adjusted low frequency time signal produced by the divider circuit to the display. The control circuit is further coupled to timing rate adjustment circuitry for adjusting the timing rate of low frequency time signal produced by the divider circuitry, in order to produce a signal representative of the timing rate of the time standard and of the amount of adjustment of the timing rate of the low frequency time signal affected by the timing rate adjustment circuitry.

REFERENCES:
patent: 3975898 (1976-08-01), Nishimura
patent: 3999370 (1976-12-01), Morokawa et al.
patent: 4015208 (1977-03-01), Hammer et al.
patent: 4015419 (1977-04-01), Morokawa et al.
patent: 4051663 (1977-10-01), Chihara et al.
patent: 4067187 (1978-01-01), Sekiya et al.
patent: 4068462 (1978-01-01), Duff et al.

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