Step motor drive unit and analog electronic timepiece

Details Step motor drive unit and analog electronic timepiece Step motor drive unit and analog electronic timepiece

2007-10-16

2007-10-16

Paumen, Gary F. (Department: 2833)

Horology: time measuring systems or devices

Electrical time base

Solid state oscillating circuit type

C368S160000, C318S696000

Reexamination Certificate

active

11353468

ABSTRACT:
To make it possible by a simple constitution to perform a forcible rotation drive by a correction drive pulse and obtain a demagnetization effect. In a case where a control circuit has judged on the basis of a detection signal from a rotation detection circuit106that a motor has not rotated by a drive by a 1st normal drive pulse of a predetermined energy, after it has forcibly rotation-driven the motor by a correction drive pulse whose energy is larger than the 1st normal drive pulse, it rotation-drives the motor by a 2nd normal drive pulse whose polarity differs from the correction drive pulse and whose energy is larger than the 1st normal drive pulse.

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