Patents by Inventor Atsushi Naito
Atsushi Naito has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11954812Abstract: A preprocessing device includes processing circuitry configured to acquire coordinate information of respective vertexes of a polygon for inside/outside determination and the coordinate information of the respective vertexes of the polygon for inside/outside determination and rotate a coordinate to be determined and the polygon for inside/outside determination as preprocessing of determination processing of determining whether the coordinate to be determined exists inside or outside the polygon for inside/outside determination, and output coordinate information of respective vertexes of the rotated polygon for inside/outside determination and the rotated coordinate to be determined as rotated coordinate information.Type: GrantFiled: September 12, 2019Date of Patent: April 9, 2024Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Kazuhiro Miyahara, Tatsuro Kimura, Ichibe Naito, Atsushi Isomura, Tomoya Ikeda
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Publication number: 20230165485Abstract: A biological activity detection sensor is provided that includes a motion detection sensor that detects motion of a living body, a tremor sensor that detects a tremor of the living body, and a base member that can be mounted on the living body. The base member includes a first member that is deformable in accordance with a mounted state on the living body, and a second member that is less deformable than the first member. The tremor sensor is provided in the first member, and the motion detection sensor is provided in the second member.Type: ApplicationFiled: January 19, 2023Publication date: June 1, 2023Inventors: Naoki KAWARA, Atsushi NAITO, Yutaka TAKAMARU
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Publication number: 20230148908Abstract: An action state estimation apparatus is provided that includes a sampling portion, a statistic calculation portion, an action state model storage, and an estimation calculation portion. The sampling portion samples a displacement measurement signal within a predetermined time and generates displacement measurement data. The statistic calculation portion calculates a statistic of the displacement measurement data. The action state model storage stores an action state model modeled by associating the statistic with a loaded state of a muscle of the test subject. The estimation calculation portion estimates the loaded state by setting the statistic as an input vector and using the action state model.Type: ApplicationFiled: January 19, 2023Publication date: May 18, 2023Inventors: Tatsuhiko MATSUMOTO, Atsushi NAITO, Naoki KAWARA, Yutaka TAKAMARU
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Publication number: 20230148906Abstract: An action state estimation apparatus is provided that includes a sampling portion, an action state model storage, and an estimation calculation portion. The sampling portion samples a displacement measurement signal within a predetermined time and generates displacement measurement data based on the sampled displacement measurement signal. The action state model storage stores an action state model modeled by associating the displacement measurement data with a loaded state of a muscle of the test subject. The estimation calculation portion then estimates the loaded state by setting the displacement measurement data as an input vector and using the action state model.Type: ApplicationFiled: January 19, 2023Publication date: May 18, 2023Inventors: Tatsuhiko MATSUMOTO, Atsushi NAITO, Naoki KAWARA, Yutaka TAKAMARU
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Publication number: 20220287594Abstract: A physical activity monitoring device is provided that includes a muscle activity sensor, an acceleration sensor, and a computation unit. The acceleration sensor can be attached to a leg and can output a first monitoring signal corresponding to an activity of the leg. The muscle activity sensor can be attached to the leg and can output a second monitoring signal corresponding to an activity of a muscle and/or a tendon of the leg. The computation unit can detect the load condition of the body of a wearer or user that includes the body position of the wearer or user by using the first monitoring signal and the second monitoring signal.Type: ApplicationFiled: June 2, 2022Publication date: September 15, 2022Inventors: Yutaka TAKAMARU, Atsushi NAITO, Naoki KAWARA
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Patent number: 11437181Abstract: A metal film includes portions that are opposed to each other and located away from each other between the first winding and the second winding. The metal film includes the first linear part that is thermally coupled to a housing. The average value of electric resistance per unit length in the peripheral direction of the first linear part of the metal film is greater than an average value of electric resistance per unit length of locations other than the first linear part.Type: GrantFiled: March 25, 2020Date of Patent: September 6, 2022Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Hiroshi Fukasaku, Shunsuke Ambo, Junya Kaida, Yoshiki Nagata, Takashi Kawashima, Kenji Hayakawa, Yoshikazu Hayashi, Atsushi Naito
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Publication number: 20210259581Abstract: A muscle activity observation apparatus that includes a sensor module and a detection module. The sensor module includes a piezoelectric sensor. Moreover, the piezoelectric sensor has an output that changes in accordance with a tremor of a tendon or a muscle, and an output that changes in accordance with contraction and relaxation of the tendon or the muscle. A detector of the detection module detects an activity state of the tendon or the muscle using a tremor signal and a contraction-relaxation signal output from the piezoelectric sensor.Type: ApplicationFiled: May 10, 2021Publication date: August 26, 2021Inventors: Atsushi Naito, Naoki Kawara, Yutaka Takamaru
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Patent number: 11097592Abstract: An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power. The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.Type: GrantFiled: March 30, 2017Date of Patent: August 24, 2021Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Fumihiro Kagawa, Atsushi Naito, Yoshiki Nagata, Shunsuke Ambo, Keiji Yashiro, Kazuhiro Shiraishi
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Publication number: 20210231115Abstract: An electric compressor including a rotary shaft, a compression part, an electric motor, an inverter circuit, a filter element disposed on an input side of the inverter circuit, the filter element including a capacitor connected in parallel to a direct current power source, a holder holding the filter element, a resistor having a lead portion electrically connected to the capacitor, and a housing having an inverter accommodation chamber in which the inverter circuit, the holder, and the capacitor are accommodated. The holder includes a metal plate having an internally threaded screw hole. The resistor is held by the holder the metal plate interposed therebetween with a bolt screwed into the internal threaded screw hole. The holder is fixed to the housing. The holder is interposed between the lead portion and the housing. An insulating heat transfer member is interposed between the metal plate and the housing.Type: ApplicationFiled: January 25, 2021Publication date: July 29, 2021Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Atsushi NAITO, Keiji YASHIRO, Kazuhiro SHIRAISHI, Yusuke KINOSHITA
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Patent number: 11056262Abstract: The present disclosure provides an inductive element capable of lowering a Q-value. An inductive element includes a first cover and a second cover covering an annular core, and a first winding and a second winding wound around a region of the core, the first cover and the second cover. The first cover covers a part of an inner circumferential surface of the core, a part of an outer circumferential surface and an end surface on one end side in an axial direction. The second cover covers a part of the inner circumferential surface of the core, a part of the outer circumferential surface an end surface on the other end side in the axial direction.Type: GrantFiled: June 20, 2018Date of Patent: July 6, 2021Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TOKIN CorporationInventors: Michitaka Itaya, Toshiaki Oka, Koki Harada, Yukiyasu Yamauchi, Takuma Terui, Takeshi Harasawa, Atsushi Naito, Keiji Yashiro, Kazuhiro Shiraishi
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Patent number: 11025141Abstract: An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.Type: GrantFiled: March 30, 2017Date of Patent: June 1, 2021Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Fumihiro Kagawa, Atsushi Naito, Yoshiki Nagata, Shunsuke Ambo, Keiji Yashiro, Kazuhiro Shiraishi
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Publication number: 20200321836Abstract: An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.Type: ApplicationFiled: March 30, 2017Publication date: October 8, 2020Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Fumihiro KAGAWA, Atsushi NAITO, Yoshiki NAGATA, Shunsuke AMBO, Keiji YASHIRO, Kazuhiro SHIRAISHI
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Publication number: 20200312532Abstract: A metal film includes portions that are opposed to each other and located away from each other between the first winding and the second winding. The metal film includes the first linear part that is thermally coupled to a housing. The average value of electric resistance per unit length in the peripheral direction of the first linear part of the metal film is greater than an average value of electric resistance per unit length of locations other than the first linear part.Type: ApplicationFiled: March 25, 2020Publication date: October 1, 2020Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Hiroshi FUKASAKU, Shunsuke AMBO, Junya KAIDA, Yoshiki NAGATA, Takashi KAWASHIMA, Kenji HAYAKAWA, Yoshikazu HAYASHI, Atsushi NAITO
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Publication number: 20200298654Abstract: An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power. The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.Type: ApplicationFiled: March 30, 2017Publication date: September 24, 2020Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Fumihiro KAGAWA, Atsushi NAITO, Yoshiki NAGATA, Shunsuke AMBO, Keiji YASHIRO, Kazuhiro SHIRAISHI
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Patent number: 10541590Abstract: A fluid machine includes a housing including a suction port through which fluid is drawn, an electric motor accommodated in the housing, and a drive device configured to drive the electric motor. The drive device includes a circuit board, a heat-generating component, and a metal member. The circuit board includes a pattern wire. The circuit board is opposed to an outer surface of the housing. The heat-generating component is located between the circuit board and the outer surface of the housing and spaced apart from the circuit board. The heat-generating component generates electromagnetic noise. The metal member is at least partially located between the circuit board and the heat-generating component. The metal member is configured to transmit heat from the heat-generating component to the housing and absorb or block the electromagnetic noise.Type: GrantFiled: March 29, 2017Date of Patent: January 21, 2020Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Fumihiro Kagawa, Atsushi Naito, Yusuke Kinoshita
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Patent number: 10277116Abstract: This on-vehicle power conversion apparatus is provided with: a power conversion circuit to which DC power is inputted; and a noise reduction unit that is configured to reduce common-mode noise and normal-mode noise which are included in the DC power and that is provided to the input side of the power conversion circuit. The noise reduction unit is provided with: a core having a first core part and a second core part; a common-mode chalk coil having a first winding wire wound around the first core part and a second winding wire wound around the second coil part; and a smoothing capacitor that constitutes a low-pass filter circuit cooperatively with the common-mode chalk coil. The power conversion apparatus is further provided with a damping unit provided at a position intersecting the magnetic path of a magnetic flux leakage.Type: GrantFiled: March 30, 2017Date of Patent: April 30, 2019Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Atsushi Naito, Fumihiro Kagawa, Yoshiki Nagata, Shunsuke Ambo, Keiji Yashiro, Kazuhiro Shiraishi
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Publication number: 20190089243Abstract: This on-vehicle power conversion apparatus is provided with: a power conversion circuit to which DC power is inputted; and a noise reduction unit that is configured to reduce common- mode noise and normal-mode noise which are included in the DC power and that is provided to the input side of the power conversion circuit. The noise reduction unit is provided with: a core having a first core part and a second core part; a common-mode chalk coil having a first winding wire wound around the first core part and a second winding wire wound around the second coil part; and a smoothing capacitor that constitutes a low-pass filter circuit cooperatively with the common-mode chalk coil. The power conversion apparatus is further provided with a damping unit provided at a position intersecting the magnetic path of a magnetic flux leakage.Type: ApplicationFiled: March 30, 2017Publication date: March 21, 2019Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Atsushi NAITO, Fumihiro KAGAWA, Yoshiki NAGATA, Shunsuke AMBO, Keiji YASHIRO, Kazuhiro SHIRAISHI
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Publication number: 20190006079Abstract: The present disclosure provides an inductive element capable of lowering a Q-value. An inductive element includes a first cover and a second cover covering an annular core, and a first winding and a second winding wound around a region of the core, the first cover and the second cover. The first cover covers a part of an inner circumferential surface of the core, a part of an outer circumferential surface and an end surface on one end side in an axial direction. The second cover covers a part of the inner circumferential surface of the core, a part of the outer circumferential surface an end surface on the other end side in the axial direction.Type: ApplicationFiled: June 20, 2018Publication date: January 3, 2019Inventors: Michitaka ITAYA, Toshiaki OKA, Koki HARADA, Yukiyasu YAMAUCHI, Takuma TERUI, Takeshi HARASAWA, Atsushi NAITO, Keiji YASHIRO, Kazuhiro SHIRAISHI
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Patent number: 10003241Abstract: A vehicle inverter device is configured to convert DC power to AC power. The vehicle inverter device includes a circuit having switching elements and a noise reducer. The noise reducer is provided on an input side of the circuit and is configured to reduce common mode noise and normal mode noise contained in the DC power. The noise reducer is configured by a common mode choke coil, which includes a core, a first winding wound about a first winding portion of the core, and a second winding wound about a second winding portion of the core.Type: GrantFiled: June 28, 2016Date of Patent: June 19, 2018Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Atsushi Naito, Yoshiki Nagata, Fumihiro Kagawa, Shunsuke Ambo
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Publication number: 20170288512Abstract: A fluid machine includes a housing including a suction port through which fluid is drawn, an electric motor accommodated in the housing, and a drive device configured to drive the electric motor. The drive device includes a circuit board, a heat-generating component, and a metal member. The circuit board includes a pattern wire. The circuit board is opposed to an outer surface of the housing. The heat-generating component is located between the circuit board and the outer surface of the housing and spaced apart from the circuit board. The heat-generating component generates electromagnetic noise. The metal member is at least partially located between the circuit board and the heat-generating component. The metal member is configured to transmit heat from the heat-generating component to the housing and absorb or block the electromagnetic noise.Type: ApplicationFiled: March 29, 2017Publication date: October 5, 2017Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Fumihiro KAGAWA, Atsushi NAITO, Yusuke KINOSHITA