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公开(公告)号：US11016446B2
公开(公告)日：2021-05-25
申请号：US16752897
申请日：2020-01-27
Applicant: Seiko Instruments Inc.
Inventor： Satoshi Sakai , Tetsuya Nobe
Abstract: A timepiece includes a stepping motor having a rotor and a coil, and a drive circuit that applies a first drive pulse having a stable stationary position at a rotor rotation angle of 90 degrees or less from a reference position and a second drive pulse having the stable stationary position at a rotor rotation angle of 90 degrees or more from the reference position, as a pulse for driving the rotor, to the coil. When a period during which the pulse is not applied to the coil is assumed as a waiting period, the drive circuit generates the waiting period after a first application of the second drive pulse after an application of the pulse to the coil is started and rotates the rotor by one or more turns without passing through the waiting period at at least one predetermined timing after the waiting period.
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公开(公告)号：US09971304B2
公开(公告)日：2018-05-15
申请号：US15237896
申请日：2016-08-16
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Satoshi Sakai , Katsuya Mugishima , Tomohiro Ihashi , Kenji Ogasawara
Abstract: A timepiece movement includes a second light emitting element, a second light receiving element, and a second wheel & pinion that drives a second hand and that has a first second wheel transmittable portion and a second second wheel transmittable portion through which light is transmittable, A control unit detects a position of the second wheel & pinion by causing the second light receiving element to receive the transmitted light emitted from the second light emitting element and transmitted through the first second wheel transmittable portion or the second second wheel transmittable portion, and a second detection wheel has a second detection wheel transmittable portion through which the transmitted light is transmittable. The control unit detects a transmitting time point at which the transmitted light is transmitted through the first second wheel transmittable portion or concurrently through the second second wheel transmittable portion and the second detection wheel transmittable portion. After the transmitting time point, when the second detection wheel transmittable portion is located at other positions except for a second detection position where the second detection wheel transmittable portion is located at the transmitting time point, the control unit causes the second light emitting element to stop light emitting.
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公开(公告)号：US20130172719A1
公开(公告)日：2013-07-04
申请号：US13719315
申请日：2012-12-19
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Satoshi Sakai , Akira Takakura
IPC: A61B5/0408 , A61B5/00 , A61B5/04 , A61B5/0245
CPC classification number: A61B5/04085 , A61B5/0006 , A61B5/02438 , A61B5/0245 , A61B5/04012 , A61B5/0428 , A61B5/6823 , A61B5/6831 , A61B5/742 , A61B2560/0412
Abstract: A biometric information detecting apparatus including: a pair of electrodes coming into contact with a surface of a living body; and a circuit board to which a pair of the electrodes are connected and configured to detect biometric information on the basis of a potential difference generated between a pair of the electrodes, the circuit board including an electrode connecting pattern Co which a pair of the electrodes are electrically connected, and a detection circuit unit configured to detect the biometric information on the basis of the potential difference; and a GND pattern provided on the circuit board between the electrode connecting pattern and the detection circuit unit.
Abstract translation: 一种生物体信息检测装置，包括：与生物体的表面接触的一对电极; 以及电路板，一对电极被连接并配置成基于在一对电极之间产生的电位差来检测生物信息，所述电路板包括一对电极的电极连接图案Co 以及检测电路单元，其被配置为基于所述电位差检测所述生物信息; 以及设置在电极基板上的电极连接图案与检测电路单元之间的GND图案。
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公开(公告)号：US10712712B2
公开(公告)日：2020-07-14
申请号：US15867307
申请日：2018-01-10
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Satoshi Sakai , Tomohiro Ihashi
Abstract: A timepiece capable of selecting a timepiece mode and a chronograph mode includes an hour hand and a minute hand which indicate current time in a case where the timepiece mode is, selected. A main control unit performs control so as to start measuring time by simultaneously starting hand operations of the hour hand and the minute hand in a case where the chronograph mode is selected. When the hand operation of one of the hands is stopped, the control unit performs control so as to indicate the time when the hand operation of the one hand is stopped, and to continue to measure the time by continuing the hand operation of the other hand.
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Patent Agency Ranking
公开(公告)号：US10037009B2
公开(公告)日：2018-07-31
申请号：US15237881
申请日：2016-08-16
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Katsuya Mugishima , Satoshi Sakai , Kenji Ogasawara , Tomohiro Ihashi
IPC: G04C3/14
Abstract: A power saving movement includes a center wheel and pinion driving a minute hand and minute detection wheel. A gear ratio of the center wheel/pinion with respect to the minute detection wheel is 1/M. The minute detection wheel has N minute detection portions which are disposed on the same rotation trajectory as the center wheel & pinion. N and M are integers. The minute detection wheel transmittable portions are disposed at an interval of 360°/N. A pair of the center wheel transmittable portions are disposed in parallel at an unequal angular interval of a center axle of the center wheel & pinion. An angular interval of the center wheel transmittable portions adjacent to each other in the circumferential direction of the center axle of the center wheel & pinion is set to magnification of 360°/(M×N).
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公开(公告)号：US09971310B2
公开(公告)日：2018-05-15
申请号：US15237868
申请日：2016-08-16
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Satoshi Sakai , Katsuya Mugishima , Tomohiro Ihashi , Kenji Ogasawara
CPC classification number: G04C3/146 , G04B27/001 , G04C3/14
Abstract: A timepiece movement includes a center wheel & pinion that drives a minute hand, a second wheel & pinion arranged coaxially with a center axle of the center wheel & pinion, a first light emitting element arranged on one side in an axial direction of the center axle with respect to the center wheel & pinion and the second wheel & pinion, and a first light receiving element arranged on the other side in the axial direction of the center axle across the second wheel & pinion, and that detects light emitted from the first light emitting element. The center wheel & pinion has a first center wheel transmittable portion through which the light emitted from the first light emitting element is transmittable, and a second center wheel transmittable portion which is disposed on a rotation trajectory of the first center wheel transmittable portion and through which the light emitted from the first light emitting element is transmittable. The second wheel & pinion has a first second wheel transmittable portion which is disposed on the rotation trajectory of the first center wheel transmittable portion and the second center wheel transmittable portion when viewed in the axial direction of the center axle and through which the light emitted from the first light emitting element is transmittable.
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7.发明授权公开(公告)号：US09190941B2
公开(公告)日：2015-11-17
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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8.发明授权公开(公告)号：US09182746B2
公开(公告)日：2015-11-10
申请号：US14013120
申请日：2013-08-29
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Kosuke Yamamoto , Saburo Manaka , Kazumi Sakumoto , Kenji Ogasawara , Keishi Honmura , Satoshi Sakai
Abstract: A stepping motor control circuit includes: a rotation detection unit that detects a induced signal exceeding a predetermined reference threshold voltage which is generated by a stepping motor in a detection section divided into at least three sections, and detects a rotation state on the basis of a pattern indicating whether the induced signal exceeding a reference threshold voltage is detected in each of the sections; and a control unit that selects a main drive pulse depending on the rotation state detected by the rotation detection unit from a plurality of main drive pulses which are different from each other in energy, and drives the stepping motor. When the induced signal exceeding a reference threshold voltage is not detected in an initial section, the rotation detection unit detects the induced signal by shifting an end position of at least one section other than the initial section to a rear side by a predetermined amount.
Abstract translation: 步进电机控制电路包括：旋转检测单元，其检测超过由划分为至少三个部分的检测部中由步进电机产生的预定参考阈值电压的感应信号，并基于 指示在每个部分中是否检测到超过参考阈值电压的感应信号的模式; 以及控制单元，其根据由旋转检测单元检测的旋转状态，从能量彼此不同的多个主驱动脉冲中选择主驱动脉冲，并驱动步进电机。 当在初始部分中没有检测到超过参考阈值电压的感应信号时，旋转检测单元通过将除了初始部分之外的至少一个部分的结束位置向后侧移动预定量来检测感应信号。
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公开(公告)号：US11424702B2
公开(公告)日：2022-08-23
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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