Digital display electronic timepiece

Details Digital display electronic timepiece Digital display electronic timepiece

1974-09-19

1977-01-25

Jackmon, E. S.

58 50R, 58 855, G04C 300, G04B 1930, G04B 2700

Patent

active

040044076

ABSTRACT:
A digital display electronic timepiece having circuitry for adjusting the division ratio of the divider circuit and a digital display displaying the amount that division ratio is adjusted. The electronic timepiece includes a quartz crystal oscillator circuit for producing a high frequency time standard signal, a divider circuit including a plurality of series connected divider stages adapted to produce a low frequency time standard signal in response to said high frequency time standard signal, certain of said divider stages producing timekeeping signals representative of actual time in response to said low frequency time standard signal, and a division ratio adjustment circuit adapted to effect an adjustment of the low frequency signal in response to said high frequency signal. The adjustment circuit produces an adjustment setting signal indicative of the division ratio adjustment. Display elements are coupled to the certain divider stages, the display elements displaying actual time in response to the timekeeping signals.

REFERENCES:
patent: 3795099 (1974-03-01), Tsuruishi
patent: 3823545 (1974-07-01), Vittoz et al.

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