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公开(公告)号：US20180278247A1
公开(公告)日：2018-09-27
申请号：US15926158
申请日：2018-03-20
Applicant: Seiko Epson Corporation
Inventor： Akira SHIRAO
CPC classification number: H03K17/223 , G04G19/06 , G04G99/003 , G06F1/26 , H03K17/002 , H03K17/22 , H03K17/284 , H03K21/02
Abstract: Provided are an electronic circuit and electronic timepiece that can initialize internal circuits even if chattering occurs when a battery is installed. In the electronic circuit, when the initialization state hold signal is input, the initialization control circuit continues outputting the initialization control signal at the first level until the clock signal is output; and when the initialization state hold signal is input and the clock signal is output, outputs the initialization control signal at the second level cancelling the initialization process to the initialization circuit.
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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
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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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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公开(公告)号：US08982675B2
公开(公告)日：2015-03-17
申请号：US13199499
申请日：2011-08-31
Applicant: Kazuo Kato , Akira Takakura , Toshitaka Fukushima , Keisuke Tsubata , Hisao Nakamura , Tomohiro Ihashi , Yoshinori Sugai , Eriko Noguchi , Satoshi Sakai , Takanori Hasegawa
Inventor： Kazuo Kato , Akira Takakura , Toshitaka Fukushima , Keisuke Tsubata , Hisao Nakamura , Tomohiro Ihashi , Yoshinori Sugai , Eriko Noguchi , Satoshi Sakai , Takanori Hasegawa
IPC: G04C23/00 , G04C17/00 , G05F1/00 , G06F3/038 , H02J1/10 , G04C10/02 , G04G19/06 , H02J7/00 , H02J7/34
Abstract: A power supply unit has a first power supply circuit that supplies a voltage to a load driving unit and a second power supply circuit that supplies a voltage to circuits other than the load driving unit. A first switching unit connects any one of a power supply that supplies a power supply voltage and a voltage step-down circuit that supplies a step-down voltage of the power supply voltage to the first power supply circuit. A second switching unit connects any one of the power supply and the voltage step-down circuit to the second power supply circuit. A control unit controls the connection by the first switching unit and the connection by the second switching unit to switch the voltage supplied to the first power supply circuit and the voltage supplied to the second power supply circuit in accordance with properties of the load driving unit.
Abstract translation: 电源单元具有向负载驱动单元提供电压的第一电源电路和向负载驱动单元以外的电路提供电压的第二电源电路。 第一开关单元连接提供电源电压的电源中的任一个和向第一电源电路提供电源电压的降压电压的降压电路。 第二开关单元将电源和降压电路中的任一个连接到第二电源电路。 控制单元通过第一开关单元控制连接和第二开关单元的连接，以根据负载驱动单元的特性来切换提供给第一电源电路的电压和提供给第二电源电路的电压。
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公开(公告)号：US20140204720A1
公开(公告)日：2014-07-24
申请号：US14161235
申请日：2014-01-22
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Kotaro WATANABE , Makoto MITANI
Abstract: There are provided a constant voltage circuit that features low current consumption and stable operation, and an analog electronic clock provided with the constant voltage circuit. The constant voltage circuit includes a differential amplifier circuit which is turned on/off by a predetermined signal and which controls the voltage of a gate of an output transistor on the basis of a reference voltage and a feedback voltage that are received, a switch circuit which is connected to an output terminal of the differential amplifier circuit and which is turned on/off by a predetermined signal, and a voltage holding circuit which is connected between the gate of the output transistor and a power supply terminal and which has a resistor and a capacitor connected in series. An analog electronic clock provided with the foregoing constant voltage circuit that supplies a voltage to at least an oscillation circuit and a frequency division circuit.
Abstract translation: 提供了具有低电流消耗和稳定运行的恒压电路，以及配有恒压电路的模拟电子时钟。 恒压电路包括通过预定信号导通/截止的差分放大电路，并根据接收到的基准电压和反馈电压来控制输出晶体管的栅极的电压;开关电路， 连接到差分放大器电路的输出端并通过预定信号导通/截止;以及电压保持电路，连接在输出晶体管的栅极和电源端之间，并具有电阻和 电容串联连接。 具有上述恒压电路的模拟电子时钟，其向至少一个振荡电路和分频电路提供电压。
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Patent Agency Ranking
公开(公告)号：US20130194898A1
公开(公告)日：2013-08-01
申请号：US13738073
申请日：2013-01-10
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Kazuo KATO , Akira TAKAKURA , Tomohiro IHASHI , Takanori HASEGAWA , Toshitaka FUKUSHIMA
IPC: G04G19/06
Abstract: There is provided an electronic timepiece that includes a solar panel which receives light to generate electric power, is operated with the electric power supplied from a secondary battery charged with output voltage of the solar panel, and includes a normal mode in which clock display is performed on a display unit and a power saving mode in which clock display on the display unit is stopped, based on illuminance detection of the solar panel, the electronic timepiece including: a mode control unit which switches cycles of the illuminance detection, by setting a cycle of the illuminance detection of the normal mode as a first cycle (for example, one minute), and a cycle of the illuminance detection of the power saving mode as a second cycle (for example, two seconds).
Abstract translation: 提供了一种电子钟表，其包括接收光以产生电力的太阳能电池板，利用从充电了太阳能电池板的输出电压的二次电池供电的电力进行操作，并且包括执行时钟显示的正常模式 在基于太阳能面板的照度检测的显示单元和显示单元的时钟显示停止的省电模式下，电子钟表包括：模式控制单元，其通过设置周期来切换照度检测的周期 作为第一周期（例如，一分钟）的正常模式的照度检测的周期，以及作为第二周期（例如两秒）的省电模式的照度检测的周期。
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公开(公告)号：US09857774B2
公开(公告)日：2018-01-02
申请号：US15149287
申请日：2016-05-09
Applicant: SEIKO EPSON CORPORATION
Inventor： Masaya Ninomiya
Abstract: A semiconductor device includes: a secondary battery; a constant voltage generation circuit that is driven in accordance with the secondary battery; a control logic circuit that is driven with a constant voltage generated by the constant voltage generation circuit and controls the constant voltage generation circuit; and a starting circuit that outputs a control signal for operating the constant voltage generation circuit in correspondence to an initialization signal input from outside in a case in which the constant voltage generation circuit is stopped.
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公开(公告)号：US20160018788A1
公开(公告)日：2016-01-21
申请号：US14797416
申请日：2015-07-13
Applicant: Seiko Instruments Inc.
Inventor： Makoto MITANI , Kotaro WATANABE
IPC: G04F5/04
Abstract: To provide an analog electronic timepiece which prevents a crystal oscillation circuit from malfunctioning even if a battery voltage is lowered at motor loading. An analog electronic timepiece is equipped with a crystal vibrator, an oscillation circuit, a frequency division circuit, a constant voltage circuit, an output control circuit, and a motor. The analog electronic timepiece is configured in such a manner that the constant voltage circuit has a voltage holding circuit connected between a gate of an output transistor and a power supply terminal, and the oscillation circuit and the frequency division circuit are operated with a constant voltage generated by the constant voltage circuit as a power supply.
Abstract translation: 为了提供即使在电动机负载下电池电压降低的情况下也能防止晶体振荡电路发生故障的模拟电子钟表。 模拟电子钟表配备有晶体振子，振荡电路，分频电路，恒压电路，输出控制电路和电动机。 模拟电子钟表被配置成使得恒压电路具有连接在输出晶体管的栅极和电源端子之间的电压保持电路，并且以产生的恒定电压来操作振荡电路和分频电路 由恒压电路作为电源。
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公开(公告)号：US20130194896A1
公开(公告)日：2013-08-01
申请号：US13738059
申请日：2013-01-10
Applicant: Seiko Instruments Inc.
Inventor： Kazuo KATO , Akira TAKAKURA , Tomohiro IHASHI , Takanori HASEGAWA , Toshitaka FUKUSHIMA
IPC: G04G19/06
Abstract: According to an electronic timepiece of the invention, when a secondary battery is in an uncharged state and an oscillation circuit, a display unit, and a CPU are restored from an inoperable state to a normally charged state which makes the respective members to be operable, the electronic timepiece activates and oscillates the oscillation circuit when a secondary battery voltage reaches a predetermined first voltage (for example, 0.9 V), and cancels a reset of the CPU when the secondary battery voltage reaches a predetermined second voltage (for example, 1.2 V), and starts a time-of-day display on the display unit when the secondary battery voltage reaches a predetermined third voltage (2.2 V).
Abstract translation: 根据本发明的电子钟表，当二次电池处于不充电状态并且振荡电路，显示单元和CPU从不可操作状态恢复到使各个部件可操作的正常充电状态时， 当二次电池电压达到预定的第一电压（例如0.9V）时，电子钟表激活并振荡振荡电路，并且当二次电池电压达到预定的第二电压（例如，1.2V）时，该电子表被取消CPU的复位 ），并且当二次电池电压达到预定的第三电压（2.2V）时，在显示单元上开始日时显示。
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公开(公告)号：US5001685A
公开(公告)日：1991-03-19
申请号：US304289
申请日：1989-01-24
Applicant: Motomu Hayakawa
Inventor： Motomu Hayakawa
IPC: G04G19/06
CPC classification number: G04G19/06
Abstract: An electronic wristwatch including an a.c. generator having an output which is rectified using a half-wave rectifier. The half-wave rectified output of the generator is stored in a capacitor serving as a secondary power supply. Booster circuitry is operable for increasing and decreasing the voltage of the secondary power supply which is then applied across an auxiliary capacitor used for powering the wristwatch. Additional circuitry provides a suitable voltage across the auxiliary capacitor for driving the watch when the voltage across the secondary power supply is at or below a predetermined level. A pair of detecting circuits detect the maximum and minimum permissible voltage levels of the secondary power supply and auxiliary capacitor.
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