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公开(公告)号：US20190086873A1
公开(公告)日：2019-03-21
申请号：US16135535
申请日：2018-09-19
Applicant: Seiko Instruments Inc.
Inventor： Akihito OKUMURA , Ryosuke ISOGAI , Kosuke YAMAMOTO
Abstract: A timepiece includes a voltage detection unit that detects a voltage applied to a stepping motor for driving an indicating hand, and that outputs a voltage detection result, and a drive control unit that controls a rotor to perform reverse rotation by using a reverse rotation pulse including a first pulse whose polarity is the same as that of a normal rotation pulse for causing the rotor of the stepping motor to perform normal rotation, a second pulse whose polarity is reverse to that of the first pulse, and a third pulse whose polarity is reverse to that of the second pulse, and to control the rotor to perform the reverse rotation by using the third pulse having a pulse width set in accordance with the voltage detection result.
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2.发明申请公开(公告)号：US20140071794A1
公开(公告)日：2014-03-13
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：US20210091694A1
公开(公告)日：2021-03-25
申请号：US17004363
申请日：2020-08-27
Applicant: Seiko Instruments Inc.
Inventor： Akihito OKUMURA , Kosuke YAMAMOTO , Kenji OGASAWARA , Tomohiro IHASHI
Abstract: A stepping motor control device is configured to drive a stepping motor by applying a normal drive pulse or a fixed pulse having an energy larger than that of the normal drive pulse. The stepping motor control device includes a determination unit configured to, based on whether or not a pulse applied to the stepping motor before the normal drive pulse is the fixed pulse, determine whether or not to add a degaussing pulse is applied to the normal drive pulse, the degaussing pulse being a pulse for canceling a residual magnetic flux generated in a stator of the stepping motor when the fixed pulse; and a drive control unit configured to, based on a determination result of the determination unit, drive the stepping motor with the normal drive pulse to which the degaussing pulse is added.
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4.发明申请公开(公告)号：US20200225619A1
公开(公告)日：2020-07-16
申请号：US16734873
申请日：2020-01-06
Applicant: Seiko Instruments Inc,.
Inventor： Kosuke YAMAMOTO , Shinji KINOSHITA , Ryosuke ISOGAI
Abstract: A stator includes a magnetic body having a through-hole, a magnetoresistive portion disposed around the through-hole to generate a magnetic pole around the through-hole in a case where a coil is excited, and a non-magnetic portion disposed at a position different from a position of the magnetoresistive portion around the through-hole by means of thermal melting, and formed to have lower magnetic permeability than the magnetic body.
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公开(公告)号：US20160080078A1
公开(公告)日：2016-03-17
申请号：US14854931
申请日：2015-09-15
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Kenji OGASAWARA , Akira TAKAKURA , Kazumi SAKUMOTO , Tamotsu MAESAWA , Kazuhiro KOYAMA , Tomohiro IHASHI , Kosuke YAMAMOTO , Ayumi MATSUMOTO
IPC: H04B10/114
CPC classification number: H04B10/114 , H04B10/116
Abstract: To perform stable communication in communication by an optical signal. An electronic device includes a display part having a light source which transmits an optical signal, a direction detection part detecting a direction of a display screen of the display part and a controller transmitting data by the optical signal from the display part to an electronic timepiece when the direction of the display screen detected by the detection part becomes a predetermined direction.
Abstract translation: 通过光信号进行通信的稳定通信。 一种电子设备包括具有发送光信号的光源的显示部分，检测显示部分的显示屏幕的方向的方向检测部分以及通过光信号将数据从显示部分发送到电子钟表的控制器， 由检测部检测到的显示画面的方向成为规定的方向。
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Patent Agency Ranking
6.发明申请公开(公告)号：US20130182542A1
公开(公告)日：2013-07-18
申请号：US13737032
申请日：2013-01-09
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Kosuke YAMAMOTO , Akira TAKAKURA , Kenji OGASAWARA , Saburo MANAKA , Kazumi SAKUMOTO , Keishi HONMURA
Abstract: A control circuit selects a drive pulse group corresponding to the detected voltage of a power cell from among plural drive pulse groups each including plural types of main drive pulses, and selects a drive pulse according to the detected condition of rotation of a stepping motor from among main drive pulses included in the selected drive pulse group or a correction drive pulse having larger energy than the main drive pulses. When the control circuit selects a main drive pulse initially by selecting the drive pulse group, the control circuit selects the main drive pulse having the largest energy in the selected drive pulse group. A drive pulse group selection circuit drives the stepping motor by the main drive pulse in the drive pulse group selected by the control circuit or the correction drive pulse via a main drive pulse output circuit and a correction drive pulse output circuit.
Abstract translation: 控制电路从包括多种主驱动脉冲的多个驱动脉冲组中选择对应于功率单元的检测电压的驱动脉冲组，并根据检测到的步进电机的旋转条件从 包括在所选择的驱动脉冲组中的主驱动脉冲或具有比主驱动脉冲更大的能量的校正驱动脉冲。 当控制电路首先通过选择驱动脉冲组选择主驱动脉冲时，控制电路选择所选择的驱动脉冲组中具有最大能量的主驱动脉冲。 驱动脉冲组选择电路通过主驱动脉冲输出电路和校正驱动脉冲输出电路，通过由控制电路选择的驱动脉冲群中的主驱动脉冲或校正驱动脉冲来驱动步进电机。
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7.发明申请公开(公告)号：US20210091607A1
公开(公告)日：2021-03-25
申请号：US17022918
申请日：2020-09-16
Applicant: Seiko Instruments Inc.
Inventor： Kosuke YAMAMOTO , Shinji KINOSHITA , Hitoshi TAKEUCHI , Tatsuya OMURA
Abstract: A stator includes a magnetic plate material that has a main plate surface that is a surface to face a main plate of a movement when assembled to the main plate and that has a rotor accommodating hole formed in a part thereof; and a non-magnetic region that is made non-magnetic by applying chromium on the main plate surface around the rotor accommodating hole and irradiating the chromium with a laser from the main plate surface side.
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公开(公告)号：US20190286062A1
公开(公告)日：2019-09-19
申请号：US16298275
申请日：2019-03-11
Applicant: Seiko Instruments Inc.
Inventor： Kosuke YAMAMOTO , Osamu Hirano
Abstract: A hand position control device includes a mode switching unit that is capable of switching between a normal hand movement mode and a manual hand position setting mode and a control unit that sets a pulse width of a driving pulse to be output to a coil of a motor that rotates a hand and sets a manual pulse width of the driving pulse in the manual hand position setting mode to be larger than a normal pulse width of the driving pulse in the normal hand movement mode.
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9.发明申请公开(公告)号：US20170108833A1
公开(公告)日：2017-04-20
申请号：US15295477
申请日：2016-10-17
Applicant: Seiko Instruments Inc.
Inventor： Kosuke YAMAMOTO , Shinji KINOSHITA
Abstract: A stepping motor includes a rotor that is used in rotating an indicating hand, and a stator that configures a magnetic path, that is made of an alloy containing Fe, Ni, and Cr, and in which a Cr-diffusion region whose Cr-concentration is 14 mass % or greater is disposed in a portion whose cross-sectional area in the magnetic path is smaller than a cross-sectional area of other portions.
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公开(公告)号：US20160139569A1
公开(公告)日：2016-05-19
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
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。
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