Second adjustment system in an electronic watch

Details Second adjustment system in an electronic watch Second adjustment system in an electronic watch

1975-08-29

1978-06-20

Jackmon, E. S.

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

Patent

active

040954064

ABSTRACT:
Second adjustment system in an electronic watch employing a quartz oscillator as a time base. The watch comprises a standard oscillating circuit including the quartz oscillator, a divider, a driving circuit, and a converter. The divider produces several oscillatory output signals of different frequency so as to produce diverse time signals. A time signal selection switch selects output among these outputs. The selected output time signal corresponds to the signal required for adjusting a time delay or a time advance of the seconds indicated by the watch. An incorrect time is corrected during normal watch operation by this second adjustment system.

REFERENCES:
patent: 3576099 (1971-04-01), Walton
patent: 3733803 (1973-05-01), Hiraga et al.
patent: 3762152 (1973-10-01), Marz
patent: 3789600 (1974-02-01), Champan
patent: 3792577 (1974-02-01), Fujita
patent: 3810354 (1974-05-01), Naikaido
patent: 3841081 (1974-10-01), Komaki
patent: 3854277 (1974-12-01), Samejima
patent: 3975896 (1976-08-01), Kasama

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