Electronic timepiece

Details Electronic timepiece Electronic timepiece

1978-10-18

1981-11-10

Witkowski, S. J.

Horology: time measuring systems or devices

Regulating means

For adjusting the frequency or beat

368200, 368184, G04B 1712, G04B 1716, G04B 1700

Patent

active

043002242

ABSTRACT:
An electronic timepiece comprising a fundamental frequency oscillator, a plurality of frequency divider stages, a timekeeping mechanism and display, includes circuitry for resetting and setting selective stages of the divider and thereby adding or subtracting timing pulses which are delivered to the timekeeping mechanism. A non-volatile memory stores data which terminates whether a divider stage is to be set or reset. Additionally, a plurality of circuit elements are selectively inserted to modify the circuit of the oscillator and to provide frequency adjustment. External contacts are provided for the inputting of data to memory and for measuring timing rate against an external standard.

REFERENCES:
patent: 3646371 (1972-02-01), Flad
patent: 3895486 (1975-07-01), Hammer et al.
patent: 4016508 (1977-04-01), Kobori
patent: 4020626 (1977-05-01), Kuwabara et al.

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