公开(公告)号：US09442465B2

公开(公告)日：2016-09-13

申请号：US14938968

申请日：2015-11-12

Applicant: SEIKO INSTRUMENTS INC.

Inventor： Kosuke Yamamoto ,  Kenji Ogasawara ,  Kazuhiro Koyama ,  Kazumi Sakumoto ,  Tamotsu Maesawa ,  Tomohiro Ihashi ,  Ayumi Matsumoto ,  Akira Takakura

IPC: G04C10/02 ,  G04G19/00 ,  G04G19/06 ,  G04G17/02 ,  G04G3/00

CPC classification number: G04G19/06 ,  G04C10/02 ,  G04G3/00 ,  G04G17/02 ,  G04G19/00 ,  G04G19/08 ,  G04G19/10

Abstract: An electronic timepiece includes a solar power source, a voltage stabilizer circuit that generates a constant voltage by using power supplied from the solar power source, and a control circuit that clocks the time by driving a rotating body at first hand operation speed and at second hand operation speed which is faster than the first hand operation speed. The control circuit selects a voltage of the solar power source so as to drive the rotating body in a case of the first hand operation speed, and selects at least any one voltage of the constant voltage and the voltage of the solar power source so as to drive the rotating body in a case of the second hand operation speed.

Abstract translation: 电子钟表包括：太阳能电源，通过使用从太阳能电源供给的电力产生恒定电压的稳压电路;以及控制电路，其通过以第一手操作速度驱动旋转体和秒针来控制时间 操作速度比第一手操作速度快。 控制电路在第一手操作速度的情况下选择太阳能源的电压以驱动旋转体，并且选择太阳能源的恒定电压和电压的至少一个电压，以便 在二手操作速度的情况下驱动旋转体。

公开(公告)号：US08721170B2

公开(公告)日：2014-05-13

申请号：US13713060

申请日：2012-12-13

Applicant: Seiko Instruments Inc.

Inventor： Saburo Manaka ,  Kenji Ogasawara ,  Kazumi Sakumoto ,  Keishi Honmura ,  Kosuke Yamamoto

IPC: G04B18/00

CPC classification number: G04C3/143 ,  G04B99/00

Abstract: A rotation detection unit configured to detect the condition of rotation of a stepping motor on the basis of an induced signal generated in a drive coil of the stepping motor in a detection period in which the condition of rotation of the stepping motor is detected and a control unit configured to rotationally drive the stepping motor by supplying a drive signal to the drive coil of the stepping motor within the driving period in which the stepping motor is rotationally driven are provided. The driving period and part of the detection period are configured to overlap with each other in a first time interval, and the control unit stops supply of the drive signal to the drive coil of the stepping motor in the first time interval.

Abstract translation: 一种旋转检测单元，被配置为在检测步进电动机的旋转条件的检测时段中，基于在步进电动机的驱动线圈中产生的感应信号来检测步进电动机的旋转状态， 通过在步进电动机旋转驱动的驱动期间内设置驱动步进电动机的驱动信号的单元，该驱动信号被提供给步进电动机的驱动线圈。 驱动期间和检测期间的一部分被配置为在第一时间间隔内彼此重叠，并且控制单元在第一时间间隔内停止向步进电机的驱动线圈供应驱动信号。