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公开(公告)号：US20200313583A1
公开(公告)日：2020-10-01
申请号：US16801816
申请日：2020-02-26
Applicant: Seiko Instruments Inc.
Inventor： Tetsuya NOBE , Satoshi SAKAI , Kazumi SAKUMOTO , Kosuke YAMAMOTO , Akihito OKUMURA
Abstract: A motor driving apparatus including a driving circuit for supplying a first pulse with which a first coil included in a two-phase stepping motor generates a first magnetic flux, a second pulse with which a second coil included in the stepping motor generates a second magnetic flux opposite to the first magnetic flux, a third pulse with which the first coil generates the second magnetic flux, and a fourth pulse with which the second coil generates the first magnetic flux, to the stepping motor. The driving circuit supplies the second pulse, the third pulse, and the fourth pulse in this order to the stepping motor in a state of being stopped to start the stepping motor, and supplies the first pulse, the second pulse, the third pulse, and the fourth pulse in this order to the stepping motor after starting to continuously drive the stepping motor.
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公开(公告)号：US20190103789A1
公开(公告)日：2019-04-04
申请号：US16144063
申请日：2018-09-27
Applicant: Seiko Instruments Inc.
Inventor： Kosuke YAMAMOTO , Shinji KINOSHITA
Abstract: Provided herein is a method for producing a stator for motors, and a stator for motors with which heat deformation due to laser irradiation at the time of forming a non-magnetic region can be reduced. A method for producing a stator for motors includes an unmagnetizing step of forming a non-magnetic region in a magnetic sheet material, and a working step of working a part of the non-magnetic region in the magnetic sheet material so as to form a hole for a rotor of a motor.
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13.发明申请COMMUNICATION SYSTEM, ELECTRONIC DEVICE, ELECTRONIC TIMEPIECE, COMMUNICATION METHOD 审中-公开通信系统，电子设备，电子时钟，通信方法公开(公告)号：US20160080076A1
公开(公告)日：2016-03-17
申请号：US14854947
申请日：2015-09-15
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Tomohiro IHASHI , Kenji OGASAWARA , Akira TAKAKURA , Kazumi SAKUMOTO , Tamotsu MAESAWA , Kazuhiro KOYAMA , Kosuke YAMAMOTO , Ayumi MATSUMOTO
IPC: H04B10/079 , H04B10/116
CPC classification number: H04B10/116 , H04B10/1141
Abstract: To receive data normally in communication by an optical signal by an electronic device which transmits data even when a transmission frequency differs. An electronic device transmits a transmission-frequency measurement signal for measuring a transmission frequency of data and transmits the data by using a light source which transmits an optical signal. An electronic timepiece specifies the transmission frequency of data based on the transmission-frequency measurement signal received by a solar battery which receives the optical signal and receiving the data by the solar battery based on the specified transmission frequency.
Abstract translation: 即使在发送频率不同的情况下，也可以通过发送数据的电子设备通过光信号正常接收数据。 电子设备发送用于测量数据的发送频率的发送频率测量信号，并通过使用发送光信号的光源发送数据。 电子钟表基于由太阳能电池接收的发送频率测量信号指定数据的发送频率，该太阳能电池接收光信号并基于指定的发送频率接收太阳能电池的数据。
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Patent Agency Ranking
14.发明申请公开(公告)号：US20190286064A1
公开(公告)日：2019-09-19
申请号：US16298061
申请日：2019-03-11
Applicant: Seiko Instruments Inc.
Inventor： Kosuke YAMAMOTO
Abstract: A hand position identification device includes a rotation detection unit that detects a rotation state of a rotor by using an induced voltage generated in a motor for rotating a hand, a storage unit that stores a timing information piece relating to a timing at which the induced voltage exceeds a predetermined threshold, and a control unit that compares a first timing information piece stored in the storage unit and obtained in a case where the hand is located at a first position, with a second timing information piece obtained in a case where the hand is located at a second position, and that identifies the second position as an identified position in a case where a difference between the first timing information piece and the second timing information piece is equal to or more than a predetermined amount.
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公开(公告)号：US20170212477A1
公开(公告)日：2017-07-27
申请号：US15412646
申请日：2017-01-23
Applicant: Seiko Instruments Inc.
Inventor： Kosuke YAMAMOTO
Abstract: There is provided an analog timepiece including an hour hand, a minute hand, and a second hand which are rotated by a unit step operation of a stepping motor. The analog timepiece includes a rotor that rotates the hour hand, the minute hand, and the second hand, and that has a magnetic polarity, a stator that includes magnetic pole portions disposed around the rotor, coils that excite the magnetic pole portions, and a control unit that controls each unit step of the rotor in accordance with each pulse group by applying a pulse group including a rotary pulse for rotating the rotor and a braking pulse for braking rotation of the rotor, which is applied before the rotary pulse is applied, to the coil.
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16.发明申请公开(公告)号：US20160266554A1
公开(公告)日：2016-09-15
申请号：US15035691
申请日：2014-10-17
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Kenji OGASAWARA , Akira TAKAKURA , Kazumi SAKUMOTO , Tamotsu MAESAWA , Kazuhiro KOYAMA , Tomohiro IHASHI , Kosuke YAMAMOTO , Ayumi MATSUMOTO
Abstract: An electronic device includes at least an acquisition unit, an input unit, a time correction amount calculation unit, and a transmitting unit. A timepiece includes at least a receiving unit, a power storage unit, a drive unit, and a control unit. The input unit receives an input of the time displayed by the display unit of the timepiece. The time correction amount calculation unit calculates a time correction amount for correcting the time of the timepiece from a difference between the time, the input of which is received by the input unit and the current time acquired by the acquisition unit. The transmitting unit transmits the time correction amount to the timepiece by using light. The receiving unit receives the time correction amount. The power storage unit stores electricity by using power converted from the light. The drive unit drives the indicating hand. The control unit corrects the time displayed by the indicating hand, based on the time correction amount received, by the receiving unit . The control unit controls a power storage period in the power storage unit and a receiving period in the receiving unit so as to receive the time correction amount in the receiving period.
Abstract translation: 电子设备至少包括获取单元，输入单元，时间校正量计算单元和发送单元。 钟表至少包括接收单元，蓄电单元，驱动单元和控制单元。 输入单元接收由钟表的显示单元显示的时间的输入。 时间校正量计算单元根据由输入单元接收的时间与由获取单元获取的当前时间之间的差来计算用于校正时钟的时间的时间校正量。 发送单元通过使用光将时间校正量发送到时计。 接收单元接收时间校正量。 电力存储单元通过使用从光转换的电力来存储电力。 驱动单元驱动指示手。 控制单元基于由接收单元接收的时间校正量来校正由指示手显示的时间。 控制单元控制蓄电单元的蓄电期间和接收单元的接收期间，以便在接收期间内接收时间校正量。
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17.发明申请公开(公告)号：US20140071795A1
公开(公告)日：2014-03-13
申请号：US14013146
申请日：2013-08-29
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Saburo MANAKA , Kenji OGASAWARA , Kazumi SAKUMOTO , Keishi HONMURA , Kosuke YAMAMOTO , Satoshi SAKAI
Abstract: A rotation detection circuit detects an induced current flowing through a drive coil of a stepping motor in a detection section divided into a plurality of sections, and detects a rotation state of the stepping motor on the basis of a pattern indicating whether or not the induced current exceeds a predetermined reference value in each of the sections. A control unit selects a drive pulse corresponding to the rotation state detected by the rotation detection unit, and supplies a drive current to a drive coil to rotatably drive the stepping motor. The rotation detection unit carries out detection by selecting a detection direction of the induced current in the sections after the first section on the basis of whether or not the induced current exceeding each of a plurality of reference values is detected plural times in the first section.
Abstract translation: 旋转检测电路检测在划分为多个部分的检测部中流过步进电动机的驱动线圈的感应电流，并且基于表示感应电流的图案来检测步进电动机的旋转状态 在每个部分中超过预定的参考值。 控制单元选择与由旋转检测单元检测到的旋转状态对应的驱动脉冲，并向驱动线圈提供驱动电流以可旋转地驱动步进电机。 旋转检测单元基于在第一部分中是否检测到多个参考值中的每一个以上的感应电流被多次检测，在第一部分之后的部分中选择感应电流的检测方向来进行检测。
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18.发明申请公开(公告)号：US20130170328A1
公开(公告)日：2013-07-04
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: G04C3/14
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。
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