Movement and electronic timepiece
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United States of America Patent
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Nov 2, 2021
Grant Date -
Oct 3, 2019
app pub date -
Mar 28, 2019
filing date -
Mar 29, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
A movement includes a driver having ON and OFF states, and outputting a drive signal to a coil of a motor, a lower limit detector detecting that a current flowing through the coil is less than a lower limit, a drive controller bringing the driver into the ON state based on a result of the lower limit detector, and bringing the driver into the OFF state based on an elapsed time from the ON state, a polarity switcher switching a polarity of the drive signal when an elapsed time from the OFF state of the driver satisfies a switching condition, and a drive stopper stopping driving of the driver when the OFF time satisfies a stopping condition.
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