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    TIMEPIECE
    2.
    发明公开
    TIMEPIECE 有权
    钟

    公开(公告)号：EP3128378A1

    公开(公告)日：2017-02-08

    申请号：EP15773718.0

    申请日：2015-03-24

    申请人： Citizen Holdings Co., Ltd. ,  Citizen Watch Co., Ltd.

    发明人： KATO, Akira ,  IMAMURA, Kazuya ,  MORITA, Shoichiro ,  YANO, Yuji

    IPC分类号： G04C3/00

    摘要： Whether a bright state or a dark state is established is determined each time a motor is driven one step, based on a presence or absence of a passing of light through a detection hole (305a) disposed in a detection wheel (305) that rotates associated with rotations of a hand wheel coupled with the motor. A switching position X is identified at which the dark state is switched to the bright state when the dark state is determined and thereafter the bright state is determined. A position one step after the identified switching position X is set to be a reference position X+1 of the hand wheel. The reference positions X+1 and X-1 can thereby be set after a driving mechanism is assembled.

    摘要翻译： 基于光是否通过布置在旋转相关的检测轮（305）中的检测孔（305a），每次驱动电机一步时确定是否建立亮状态或暗状态 随着与马达耦合的手轮旋转。 当暗状态被确定并且此后明亮状态被确定时，识别切换位置X，在切换位置X处，暗状态被切换到明状态。 在所识别的切换位置X之后一步的位置被设置为手轮的参考位置X + 1。 由此可以在组装驱动机构之后设定参考位置X + 1和X-1。