Stepping motor control circuit and analog electronic timepiece
AssigneeSeiko Instruments Inc.
InventorTakanori Hasegawa
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AssigneeSeiko Instruments Inc.
InventorTakanori Hasegawa
Estimating the term…
A stepping motor control circuit and an analog electronic timepiece which can detect a rotation state including intermediate stopping more accurately are provided. A rotation detection circuit, in detecting whether or not an induction signal generated by the rotation of a stepping motor exceeds a predetermined reference threshold voltage during a detection period having a plurality of sections, detects whether or not the induction signal with inverted polarity exceeds a predetermined reference threshold voltage during a predetermined section, and a control unit immediately performs a drive control of the stepping motor with a correction drive pulse when it is determined that there is a sign of intermediate stopping of the stepping motor based on a result of detection by the rotation detection circuit.
A stepping motor control circuit comprising:
Dependencies are inferred from the claim text.