Electronic timepiece, movement, and motor control circuit
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United States of America Patent
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Aug 30, 2022
Grant Date -
Sep 10, 2020
app pub date -
Mar 6, 2020
filing date -
Mar 8, 2019
priority date (Note) -
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Abstract
An electronic timepiece enables driving by appropriate drive conditions even when the load on a motor changes. The electronic timepiece includes a motor having a coil; a driver that is controlled to an on state supplying drive current to the coil, and an off state not supplying the drive current; a driver controller configured to control the driver to the on state or the off state based on a control parameter and current value through the coil; and a control parameter setter configured to maintain or change the control parameter based on the on state or the off state control state of the driver controller.
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