发明名称 Stepping motor control circuit and analog electronic timepiece
摘要 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.
申请公布号 US2011235472(A1) 申请公布日期 2011.09.29
申请号 US201113065664 申请日期 2011.03.25
申请人 HASEGAWA TAKANORI 发明人 HASEGAWA TAKANORI
分类号 G04C3/14;H02P8/38 主分类号 G04C3/14
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