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公开(公告)号：US20200328618A1
公开(公告)日：2020-10-15
申请号：US16305659
申请日：2017-02-02
Inventor： Takahiro OHORI , Hideki TAMURA , Yusuke TANJI , Shingo OKAURA
IPC: H02J50/12 , H02J7/00 , H02J50/80 , B60L53/122
Abstract: A contactless power feeding system includes: a primary circuit for supplying primary power to a power feeding coil; and a primary control circuit for controlling the primary circuit. The primary control circuit acquires, from a secondary control circuit, a secondary measured value and a secondary target value of secondary power received by a power receiving coil. The primary control circuit performs control processing and update processing alternately and repeatedly. The control processing is processing of controlling the primary circuit to bring the primary measured value into conformity with a primary target value. The update processing is processing of updating the primary target value. The update processing includes processing of calculating the primary target value based on transfer efficiency to be determined by the primary measured value and the secondary measured value and on the secondary target value.
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公开(公告)号：US20180283643A1
公开(公告)日：2018-10-04
申请号：US15927762
申请日：2018-03-21
Inventor： Takahiro FUKUI , Masanobu MURAKAMI , Takahiro OHORI
CPC classification number: F21S45/10 , F21S41/141 , F21S45/43 , F21V23/02 , F21Y2115/10
Abstract: A lighting device includes an output adjustment circuit, a smoothing circuit and a control circuit. The smoothing circuit receives a binary rotation detection signal according to the rotation of a fan and smooths the rotation detection signal to produce a smoothed signal. The control circuit detects a rotation malfunction of the fan when the smoothed signal is greater than or equal to an upper limit threshold over first predetermined time or when the smoothed signal is smaller than or equal to a lower limit threshold over second predetermined time.
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公开(公告)号：US20170098649A1
公开(公告)日：2017-04-06
申请号：US15380642
申请日：2016-12-15
Inventor： Takahiro OHORI , Chikashi HAYASHI , Manabu YANAGIHARA
IPC: H01L27/095 , H01L27/098 , H01L27/06
CPC classification number: H01L27/095 , H01L21/8252 , H01L27/0605 , H01L27/0629 , H01L27/0883 , H01L27/098 , H01L29/2003 , H01L29/205 , H01L29/42316 , H01L29/778 , H01L29/7786 , H01L29/78 , H01L29/872
Abstract: A semiconductor device includes: a first semiconductor layer stacked body including a compound semiconductor; a first field-effect transistor element including a first drain electrode, a first source electrode, and a first gate electrode that are provided on the first semiconductor layer stacked body; a second semiconductor layer stacked body including a compound semiconductor; and a second field-effect transistor element including a second drain electrode, a second source electrode, and a second gate electrode that are provided on the second semiconductor layer stacked body. The second gate electrode forms a Schottky junction or a p-n junction with the second semiconductor layer stacked body, the second drain electrode is connected to the first drain electrode, the second source electrode is connected to the first gate electrode, and the second gate electrode is connected to the first source electrode.
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4.发明公开公开(公告)号：US20230305047A1
公开(公告)日：2023-09-28
申请号：US18015056
申请日：2021-07-20
Inventor： Kazunori KIDERA , Tatsuo KOGA , Takahiro OHORI , Keita KANAMORI , Kazuya OHSHIMA
IPC: G01R31/00
CPC classification number: G01R31/002
Abstract: An arc detection device includes an obtainer and a determiner. The obtainer obtains a measurement result for a voltage applied to one target power supply line among a plurality of power supply lines to which power is supplied from a DC power source. The determiner determines, based on a component of a specific frequency band in the measurement result for the voltage obtained by the obtainer, whether there is a possibility of an arc fault occurring in the plurality of power supply lines.
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公开(公告)号：US20180288846A1
公开(公告)日：2018-10-04
申请号：US15935039
申请日：2018-03-25
Inventor： Takahiro OHORI , Takahiro FUKUI , Masanobu MURAKAMI
CPC classification number: H05B33/0845 , B60Q1/0017 , B60Q1/1407 , B60Q1/1415 , H02P7/18 , H05B33/0809 , H05B33/0842
Abstract: In a power supply, a first output terminal and a second output terminal are electrically connected to each other, and a first common terminal and a second common terminal are electrically connected to each other. When a value of a consumption current of a motor is equal to or smaller than a value of a maximum output current of a second constant voltage circuit, the second constant voltage circuit keeps a second voltage at a steady voltage value. When the value of the consumption current of the motor is larger than the value of the maximum output current, the second constant voltage circuit control the second voltage to have a value smaller than a value of the first voltage, and a first constant voltage circuit supplies a differential current which corresponds to a difference between the consumption current of the motor and the maximum output current of the second constant voltage circuit.
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Patent Agency Ranking
公开(公告)号：US20230280387A1
公开(公告)日：2023-09-07
申请号：US18017691
申请日：2021-07-20
Inventor： Tatsuo KOGA , Kazunori KIDERA , Kazuya OHSHIMA , Takahiro OHORI , Keita KANAMORI
CPC classification number: G01R31/086 , G06F30/27
Abstract: An anomaly detection device that detects an anomaly in an object, the anomaly detection device includes: an analyzer that performs frequency analysis of sensing data obtained from a sensor that senses a physical quantity of the object; and a determiner that determines whether an anomaly is occurring in the object based on an output result output from a trained model by inputting frequency analysis data of the sensing data obtained from the sensor to the trained model that has been trained based on at least one of frequency analysis data of sensing data of the physical quantity obtained when the object is in a normal state or frequency analysis data of sensing data of the physical quantity obtained when the object is in an anomalous state.
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公开(公告)号：US20230268740A1
公开(公告)日：2023-08-24
申请号：US18017140
申请日：2021-07-20
Inventor： Takahiro OHORI , Kazunori KIDERA , Tatsuo KOGA , Kazuya OHSHIMA , Keita KANAMORI
IPC: H02J3/38
CPC classification number: H02J3/38
Abstract: A power distribution system includes: a power distribution network that includes one or more connections to which a load is connectable; and a plurality of power supplies capable of supplying power to the power distribution network. Power is supplied to the power distribution network from at least one power supply of the plurality of power supplies. Adjacent power supplies included in the plurality of power supplies are arranged with a gap therebetween, and a connection included in the one or more connections is positioned in the gap.
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公开(公告)号：US20230253167A1
公开(公告)日：2023-08-10
申请号：US18015134
申请日：2021-09-08
Inventor： Kazunori KIDERA , Tatsuo KOGA , Takahiro OHORI
CPC classification number: H01H1/0015 , H02H3/093
Abstract: An arc detection system includes an obtainer and a determiner. The obtainer obtains a measurement result for current flowing in a power supply line to which power is supplied from a DC power source. The determiner determines, based on a component of a specific frequency band in the measurement result for the current obtained by the obtainer, whether an arc fault has occurred. The determiner determines that the arc fault has occurred when a specific time for which the component of the specific frequency band is at least a threshold is longer than an occurrence time in which an arc can occur when a device is attached to or detached from the power supply line.
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公开(公告)号：US20180283637A1
公开(公告)日：2018-10-04
申请号：US15936779
申请日：2018-03-27
Inventor： Masanobu MURAKAMI , Takahiro FUKUI , Takahiro OHORI
IPC: F21S41/19 , F21S41/141 , H05B33/08
Abstract: The lighting device lights an illumination load in which a first light source block and a second light source block are coupled in series. The lighting device includes a switch unit coupled in parallel with the second light source block. The switch unit includes a series circuit of a switching element and a resistor. The lighting device keeps the switching element off to set a state of the illumination load to a first state. The lighting device keeps the switching element on to set the state of the illumination load to a second state. The resistor has its resistance allowing a value of a voltage across the switch unit to be smaller than a value of a voltage across the second light source block which causes the second light source block to light while the switching element is on.
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公开(公告)号：US20180211878A1
公开(公告)日：2018-07-26
申请号：US15925050
申请日：2018-03-19
Inventor： Takahiro OHORI , Ayanori IKOSHI , Hiroto YAMAGIWA , Manabu YANAGIHARA
IPC: H01L21/8232 , H01L27/06 , H01L27/095 , H01L27/098 , H01L29/778 , H01L29/808 , H01L29/812 , H01L29/868 , H01L29/872
CPC classification number: H01L21/8232 , H01L21/822 , H01L27/04 , H01L27/06 , H01L27/095 , H01L27/098 , H01L29/1066 , H01L29/2003 , H01L29/42316 , H01L29/747 , H01L29/778 , H01L29/7786 , H01L29/808 , H01L29/812 , H01L29/861 , H01L29/868 , H01L29/872
Abstract: A semiconductor device includes: a first bidirectional switch element including a first gate electrode, a second gate electrode, a first electrode, and a second electrode; a first field-effect transistor including a third gate electrode, a third electrode, and a fourth electrode; and a second field-effect transistor including a fourth gate electrode, a fifth electrode, and a sixth electrode. The first electrode is electrically connected to the third gate electrode, the first gate electrode is electrically connected to the third electrode, the second electrode is electrically connected to the fourth gate electrode, the second gate electrode is electrically connected to the fifth electrode, and the fourth electrode is electrically connected to the sixth electrode.
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