Circuit arrangement for adjusting a pulse frequency of a quartz-

Horology: time measuring systems or devices – Regulating means – For adjusting the frequency or beat

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368200, G04B 1712

Patent

active

044615825

ABSTRACT:
In a circuit arrangement for adjusting a pulse frequency of a quartz-controlled clock or watch there are present a pulse generator, a multi-stage frequency divider arranged behind said pulse generator and in front of a counter, as well as adjustable means for adding clock pulses in front of at least one predeterminable frequency divider stage during a counting cycle, and adjustable means for subtracting a clock pulse between a frequency divider stage of higher frequency and a frequency divider stage of lower frequency in a counting cycle. The higher-frequency frequency divider stages are developed as fixed, pre-settable counters, and between the pre-settable counter and the next following frequency divider stage the adjustable means for subtracting a clock pulse are arranged. In this way the current consumption of the circuit arrangement can be kept small since its elements oscillate only with a relatively low frequency.

REFERENCES:
patent: 4015419 (1977-04-01), Morokawa et al.
patent: 4101838 (1978-07-01), Aihara et al.
patent: 4119726 (1980-04-01), Bykosky et al.
patent: 4247932 (1981-01-01), Kodama
patent: 4378167 (1983-03-01), Aizawa

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