Frequency adjustment means for an electronic timepiece

Details Frequency adjustment means for an electronic timepiece Frequency adjustment means for an electronic timepiece

1975-12-15

1977-11-01

Schaefer, Robert K.

58 23R, G04B 2708

Patent

active

040559459

ABSTRACT:
An electronic horological instrument which includes a piezoelectric crystal oscillator and a counter such as a series of count-down circuits connected in tandem. The "effective frequency of the oscillator" is adjusted by inhibiting the oscillator pulses to the count-down circuits by means of a pulse inhibit circuit. The pulse inhibit circuit is readily programable to inhibit a desired number of oscillator pulses by means of a switch arrangement that includes multi-position detented pin switches.

REFERENCES:
patent: 3733803 (1973-05-01), Hiraga et al.
patent: 3745758 (1973-07-01), Kuritz
patent: 3777471 (1973-12-01), Koehler et al.
patent: 3800233 (1974-03-01), Sauthier
patent: 3834152 (1974-09-01), Nishimura et al.
patent: 3841081 (1974-10-01), Komaki
patent: 3849977 (1974-11-01), Hirose et al.
patent: 3866407 (1975-02-01), Wuthrich
patent: 3874162 (1975-04-01), Boxberger et al.
patent: 3895486 (1975-07-01), Hammer et al.
patent: 3916612 (1975-11-01), Morokawa et al.
patent: 3931703 (1976-01-01), Scherer et al.

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