Electronic timepiece frequency regulating circuit

Details Electronic timepiece frequency regulating circuit Electronic timepiece frequency regulating circuit

1977-09-19

1979-07-31

Weldon, Ulysses

58 855, 58 23D, 58 34, 58 50R, G04C 300

Patent

active

041626087

ABSTRACT:
An electronic timepiece including a phase circuit for advancing and/or delaying the phase of the frequency signals to thereby regulate the frequency thereof is provided. The electronic timepiece includes an oscillator for producing a high frequency time standard signal and a divider circuit having a series-connected chain of frequency divider stages, at least one of the divider stages in response to the application of the high frequency time standard signal to the divider circuit producing a timekeeping signal. A display is adapted to display time in response to said timekeeping signal applied thereto. The phase changing circuit is series-connected in the series-connected divider chain to thereby apply an intermediate frequency signal from the divider stage just prior thereto to the next divider stage. Additionally, the phase changing circuit is adapted to selectively change the phase of the intermediate frequency signal applied to the next divider stage to effect an adjustment of the frequency of the timekeeping signal produced by the divider circuit.

REFERENCES:
patent: 3540207 (1970-11-01), Keeler
patent: 3541779 (1970-11-01), Langley
patent: 3777471 (1973-12-01), Koehler et al.
patent: 3812669 (1974-05-01), Wiget
patent: 3812670 (1974-05-01), Nikaido et al.
patent: 3817020 (1974-06-01), Esaki
patent: 3895486 (1975-07-01), Hammer et al.
patent: 3916612 (1975-11-01), Morokawa et al.

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