Patent
1977-04-19
1979-01-09
Witkowski, Stanley J.
58 23BA, 58 23D, 58 855, G04B 2708, G04C 300
Patent
active
041331699
ABSTRACT:
An electronic timepiece havng an integrated electronic circuit including a quartz crystal oscillator, connected to a multi-stage divider, which divider supplies various outputs of various frequencies to corrector circuits, a logic circuit and a motor control circuit. The motor control circuit includes a switch to allow the timepiece to be stopped by resetting at least one stage of the divider. One of the terminals of the motor is connected to one of the stages of the divider to allow the control of the frequency of the signal issued from this stage, and, therefore, the frequency of the quartz oscillator.
REFERENCES:
patent: 3754391 (1973-08-01), Fujita
patent: 3792577 (1974-02-01), Fujita
patent: 3823545 (1974-07-01), Vittoz et al.
patent: 3842585 (1974-10-01), Lupoli
patent: 3852951 (1974-12-01), Sauthier
patent: 3895486 (1975-07-01), Hammer et al.
patent: 3901022 (1975-08-01), Cleusix et al.
patent: 3916612 (1975-11-01), Morokawa et al.
patent: 3922844 (1975-12-01), Sakamoto
patent: 3937003 (1976-02-01), Busch et al.
patent: 3998044 (1976-12-01), Yamauchi et al.
patent: 4014164 (1977-03-01), Fujita
patent: 4022013 (1977-05-01), Kamijo
patent: 4030283 (1977-06-01), Sauthier et al.
R. G. Hibberd, Integrated Circuits, Texas Instruments Electronics Series, McGraw-Hill Book Company, pp. 1-11.
Hersberger Pierre
Scherrer Igor
Ebauches S.A.
Witkowski Stanley J.
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