Patents by Inventor Masatoshi Takeda
Masatoshi Takeda 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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Publication number: 20240179392Abstract: A photographing apparatus includes a camera; a light-emitting device provided in the vicinity of the camera; a human sensor that detects a photographic subject; first light emission control means for controlling light emission of the light-emitting device in accordance with a first mode when the photographic subject is detected; detection means for detecting that a photograph-taking timing has arrived when an interocular distance of the photographic subject in an image generated by the camera in accordance with the first mode becomes at least a prescribed distance; and second light emission control means for controlling light emission of the light-emitting device, at the photograph-taking timing, in accordance with a second mode in which a light emission intensity is higher than in the first mode.Type: ApplicationFiled: February 6, 2024Publication date: May 30, 2024Applicant: NEC CorporationInventors: Teito SUZUKI, Masatoshi Takeda, Ryo Hachiya
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Publication number: 20240146066Abstract: In a power grid stabilization system, a second energy storage system has a larger energy storage capacity than a first energy storage system. A bidirectional AC/DC converter is connected between an AC power grid and a pair of input and output terminals of the first energy storage system. A first bidirectional DC/DC converter is connected between the pair of input and output terminals of the first energy storage system and a pair of input and output terminals of the second energy storage system.Type: ApplicationFiled: June 1, 2021Publication date: May 2, 2024Applicant: Mitsubishi Electric CorporationInventors: Frederick PAGE, Yoshiyuki KONO, Kazuyori TAHATA, Shuhei FUJIWARA, Shinji TOMINAGA, Masatoshi TAKEDA
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Patent number: 11930265Abstract: A photographing apparatus includes a camera; a light-emitting device provided in the vicinity of the camera; a human sensor that detects a photographic subject; first light emission control means for controlling light emission of the light-emitting device in accordance with a first mode when the photographic subject is detected; detection means for detecting that a photograph-taking timing has arrived when an interocular distance of the photographic subject in an image generated by the camera in accordance with the first mode becomes at least a prescribed distance; and second light emission control means for controlling light emission of the light-emitting device, at the photograph-taking timing, in accordance with a second mode in which a light emission intensity is higher than in the first mode.Type: GrantFiled: March 6, 2020Date of Patent: March 12, 2024Assignee: NEC CORPORATIONInventors: Teito Suzuki, Masatoshi Takeda, Ryo Hachiya
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Publication number: 20240014669Abstract: A power storage apparatus of one embodiment includes a storage bank including a plurality of power storage elements connected to each other; and one or plurality of first cells. The storage bank and the one or plurality of first cells are connected in series to each other. Each first cell includes a pair of input/output nodes, a bridge circuit including at least two semiconductor switching elements, and a power storage element connected to the pair of input/output nodes via the bridge circuit. A storage capacity of the power storage element of each first cell is smaller than a storage capacity of the storage bank.Type: ApplicationFiled: November 11, 2020Publication date: January 11, 2024Applicant: Mitsubishi Electric CorporationInventors: Yoshiyuki KONO, Shuhei FUJIWARA, Kazuyori TAHATA, Frederick PAGE, Shinji TOMINAGA, Masatoshi TAKEDA
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Patent number: 11451214Abstract: A control device for an active filter connected in parallel with a load at an installation point with respect to an AC power supply provided in a power system includes a harmonic voltage detector to detect an m-order harmonic voltage (m is an integer not less than two) included in a voltage of the installation point, a phase corrector to correct a phase of the detected m-order harmonic voltage in accordance with whether an m-order harmonic impedance when an AC power supply side is seen from the installation point is capacitive or inductive, a command value generator to generate a first compensation command value for compensating for the m-order harmonic voltage included in the voltage of the installation point based on the m-order harmonic voltage after the correction, and an output controller to control an output of the active filter based on a first compensation command value.Type: GrantFiled: December 18, 2018Date of Patent: September 20, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Masatoshi Takeda, Tomohiko Tatsumi, Shinichi Ogusa, Akihiro Matsuda
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Publication number: 20220141380Abstract: A photographing apparatus includes a camera; a light-emitting device provided in the vicinity of the camera; a human sensor that detects a photographic subject; first light emission control means for controlling light emission of the light-emitting device in accordance with a first mode when the photographic subject is detected; detection means for detecting that a photograph-taking timing has arrived when an interocular distance of the photographic subject in an image generated by the camera in accordance with the first mode becomes at least a prescribed distance; and second light emission control means for controlling light emission of the light-emitting device, at the photograph-taking timing, in accordance with a second mode in which a light emission intensity is higher than in the first mode.Type: ApplicationFiled: March 6, 2020Publication date: May 5, 2022Applicant: NEC CorporationInventors: Teito SUZUKI, Masatoshi TAKEDA, Ryo HACHIYA
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Publication number: 20220006445Abstract: A control device for an active filter connected in parallel with a load at an installation point with respect to an AC power supply provided in a power system includes a harmonic voltage detector to detect an m-order harmonic voltage (m is an integer not less than two) included in a voltage of the installation point, a phase corrector to correct a phase of the detected m-order harmonic voltage in accordance with whether an m-order harmonic impedance when an AC power supply side is seen from the installation point is capacitive or inductive, a command value generator to generate a first compensation command value for compensating for the m-order harmonic voltage included in the voltage of the installation point based on the m-order harmonic voltage after the correction, and an output controller to control an output of the active filter based on a first compensation command value.Type: ApplicationFiled: December 18, 2018Publication date: January 6, 2022Applicant: Mitsubishi Electric CorporationInventors: Masatoshi TAKEDA, Tomohiko TATSUMI, Shinichi OGUSA, Akihiro MATSUDA
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Patent number: 10283692Abstract: A power generation system includes: a heat source having a temperature being changed over time; a flow passage through which a heat medium heated by the heat source passes; a power generation device including a power generation element and a first electrode, the power generation element being electrically polarized by temperature change thereof depending on temperature change of the heat medium, the first electrode extracting electric power from the power generation element; a temperature detection device being disposed on an upstream side relative to the power generation device in the flow passage and detecting the temperature of the heat medium; a voltage application device that applies voltage to the power generation element; and a control device that activates the voltage application device when the temperature increase of the heat medium has been detected and deactivates the voltage application unit when the temperature decrease of the heat medium has been detected.Type: GrantFiled: November 20, 2014Date of Patent: May 7, 2019Assignees: DAIHATSU MOTOR CO., LTD., NATIONAL UNIVERSITY CORPORATION NAGAOKA OF TECHNOLOGYInventors: Satoru Yamanaka, Yoonho Kim, Takashi Ogawa, Akira Nakajima, Juyoung Kim, Hirohisa Tanaka, Tadachika Nakayama, Masatoshi Takeda, Noboru Yamada, Koichi Niihara
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Patent number: 9979325Abstract: A power-generating system includes a heat source which is able to produce temporal temperature variation; a first device which is able to produce temporal temperature variation based on the temperature change of the heat source and in which polarization occurs; a second device for taking out a net generating power from the first device; a temperature sensor that detects the temperature of the first device; a voltage application device that applies a voltage to the first device; and a control unit for activating the voltage application device on detecting an increase in temperature of the first device and for stopping the voltage application device on detecting a decrease in temperature of the first device by the temperature sensor.Type: GrantFiled: June 28, 2013Date of Patent: May 22, 2018Assignees: DAIHATSU MOTOR CO., LTD., National University Corporation Nagaoka University of TechnologyInventors: Yoonho Kim, Satoru Yamanaka, Juyoung Kim, Hirohisa Tanaka, Tadachika Nakayama, Masatoshi Takeda, Noboru Yamada, Koichi Niihara
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Patent number: 9780283Abstract: A thermoelectric conversion element that can efficiently make a temperature difference across a thermoelectric conversion material is provided. In the thermoelectric conversion element, on a first surface of a thermoelectric conversion module comprising a P-type thermoelectric element, an N-type thermoelectric element, and an electrode, a thermally conductive resin layer A and a thermally conductive resin layer B having a lower thermal conductivity than the thermally conductive resin layer A are provided in an alternating manner so as to be in direct contact with the first surface, and on a second surface on the opposite side of the first surface of the thermoelectric conversion module, a thermally conductive resin layer a and a thermally conductive resin layer b having a lower thermal conductivity than the thermally conductive resin layer a are provided in an alternating manner so as to be in direct contact with the second surface.Type: GrantFiled: March 18, 2014Date of Patent: October 3, 2017Assignees: NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGY, LINTEC CORPORATIONInventors: Masatoshi Takeda, Tsuyoshi Mutou, Takeshi Kondo
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Patent number: 9671809Abstract: In a reactive power compensation device, a control unit controls a magnitude of reactive power to be output by a reactive power output unit, based on a detected system voltage and one or more control parameters in a first operation mode. In a second operation mode, the control unit changes the magnitude of the reactive power to be output by the reactive power output unit to a power system in an output change period, calculates system impedances of the power system at a plurality of detection time points within the output change period, based on change amounts of the system voltage detected at the plurality of detection time points and corresponding change amounts of the reactive power, and, when a variation in the calculated system impedances is within an acceptable range, adjusts the one or more control parameters, based on the calculated system impedances.Type: GrantFiled: March 19, 2014Date of Patent: June 6, 2017Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Akihiro Matsuda, Shinichi Ogusa, Masatoshi Takeda
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Patent number: 9627997Abstract: A power-generating system includes a heat source which is able to produce temporal temperature variation, a first device in which polarization occurs based on the temperature change of the heat source, and a second device for taking out a net generating power from the first device, wherein 80% or higher of the total surface area of the first device is heated and/or cooled with the heat source.Type: GrantFiled: August 28, 2012Date of Patent: April 18, 2017Assignees: DAIHATU MOTOR CO., LTD, NATIONAL UNIVERSITY COORORATION NAGAOKA UNIVERSITY OF TECHNOLOGYInventors: Yoonho Kim, Juyoung Kim, Satoru Yamanaka, Takeshi Serizawa, Hirohisa Tanaka, Tadachika Nakayama, Masatoshi Takeda, Noboru Yamada, Koichi Niihara
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Publication number: 20160284963Abstract: A thermoelectric conversion element that can efficiently make a temperature difference across a thermoelectric conversion material is provided. In the thermoelectric conversion element, on a first surface of a thermoelectric conversion module comprising a P-type thermoelectric element, an N-type thermoelectric element, and an electrode, a thermally conductive resin layer A and a thermally conductive resin layer B having a lower thermal conductivity than the thermally conductive resin layer A are provided in an alternating manner so as to be in direct contact with the first surface, and on a second surface on the opposite side of the first surface of the thermoelectric conversion module, a thermally conductive resin layer a and a thermally conductive resin layer b having a lower thermal conductivity than the thermally conductive resin layer a are provided in an alternating manner so as to be in direct contact with the second surface.Type: ApplicationFiled: March 18, 2014Publication date: September 29, 2016Applicants: NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGY, LINTEC CORPORATIONInventors: Masatoshi TAKEDA, Tsuyoshi MUTOU, Takeshi KONDO
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Publication number: 20160284964Abstract: A power generation system includes: a heat source having a temperature being changed over time; a flow passage through which a heat medium heated by the heat source passes; a power generation device including a power generation element and a first electrode, the power generation element being electrically polarized by temperature change thereof depending on temperature change of the heat medium, the first electrode extracting electric power from the power generation element; a temperature detection device being disposed on an upstream side relative to the power generation device in the flow passage and detecting the temperature of the heat medium; a voltage application device that applies voltage to the power generation element; and a control device that activates the voltage application device when the temperature increase of the heat medium has been detected and deactivates the voltage application unit when the temperature decrease of the heat medium has been detected.Type: ApplicationFiled: November 20, 2014Publication date: September 29, 2016Applicants: DAIHATSU MOTOR CO., LTD., NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGYInventors: Satoru YAMANAKA, Yoonho KIM, Takashi OGAWA, Akira NAKAJIMA, Juyoung KIM, Hirohisa TANAKA, Tadachika NAKAYAMA, Masatoshi TAKEDA, Noboru YAMADA, Koichi NIIHARA
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Publication number: 20160225973Abstract: Provided are a power generation element including a power generation material indicated by the following general formula (1), and a power generation system using the power generation element: (AxB1-x)NbO3 (1), where A and B are mutually different and represent at least one element selected from rare-earth elements, alkaline-earth metals, alkaline metals, Cd, and Bi, and x represents an atomic proportion in a numerical range of 0<x?1. The configuration provides a power generation material that enables sufficient power generation performance even in a high temperature range, a power generation element including the power generation material, and a power generation system using the power generation element.Type: ApplicationFiled: September 9, 2014Publication date: August 4, 2016Applicants: DAIHATSU MOTOR CO., LTD., NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGYInventors: Juyoung KIM, Yoonho KIM, Takashi Ogawa, Satoru YAMANAKA, Akira NAKAJIMA, Hirohisa TANAKA, Tadachika NAKAYAMA, Masatoshi TAKEDA, Noboru YAMADA, Koichi NIIHARA
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Patent number: 9190597Abstract: A power-generating system includes a heat source having a temperature that goes up and down over time; a first device that undergoes electric polarization due to a temperature change of the heat source; and a second device that takes out an electric power from the first device.Type: GrantFiled: March 30, 2011Date of Patent: November 17, 2015Assignee: DAIHATSU MOTOR CO., LTD.Inventors: Yoonho Kim, Takeshi Serizawa, Hirohisa Tanaka, Tadachika Nakayama, Masatoshi Takeda, Noboru Yamada, Koichi Niihara
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Patent number: 9081406Abstract: Three-phase thyristor switched capacitors are delta-connected to three-phase AC buses. Each thyristor switched capacitor includes a reactor, a capacitor, and a thyristor switch that are electrically connected in series. The thyristor switches of the three phases are arranged so that the terminal-to-terminal distance between respective thyristor switches of respective phases are not uniform. The three-phase thyristor switched capacitors are configured so that the thyristor switched capacitors of two of the three phases having a shortest terminal-to-terminal distance therebetween are opposite to each other in terms of connection order in which the thyristor switch and the capacitor are electrically connected along a loop path made up of the delta-connected thyristor switched capacitors.Type: GrantFiled: December 6, 2012Date of Patent: July 14, 2015Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Osamu Mori, Masatoshi Takeda, Shinichi Ogusa
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Publication number: 20150054473Abstract: In a reactive power compensation device, a control unit controls a magnitude of reactive power to be output by a reactive power output unit, based on a detected system voltage and one or more control parameters in a first operation mode. In a second operation mode, the control unit changes the magnitude of the reactive power to be output by the reactive power output unit to a power system in an output change period, calculates system impedances of the power system at a plurality of detection time points within the output change period, based on change amounts of the system voltage detected at the plurality of detection time points and corresponding change amounts of the reactive power, and, when a variation in the calculated system impedances is within an acceptable range, adjusts the one or more control parameters, based on the calculated system impedances.Type: ApplicationFiled: March 19, 2014Publication date: February 26, 2015Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Akihiro MATSUDA, Shinichi MATSUDA, Masatoshi TAKEDA
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Publication number: 20150001989Abstract: A power-generating system includes a heat source which is able to produce temporal temperature variation; a first device which is able to produce temporal temperature variation based on the temperature change of the heat source and in which polarization occurs; a second device for taking out a net generating power from the first device; a detection unit that detects the temperature of the first device; an electric field application unit that applies an electric field to the first device; and a control unit for activating the electric field application unit when the temperature detected by the detection unit is the Curie temperature of the first device or higher.Type: ApplicationFiled: August 28, 2012Publication date: January 1, 2015Applicants: Daihatsu Motor Co., Ltd., National University Corporation Nagaoka University of TechnologyInventors: Yoonho Kim, Juyoung Kim, Takeshi Serizawa, Hirohisa Tanaga, Tadachika Nakayama, Masatoshi Takeda, Noboru Yamada, Koichi Niihara, Kyohei Ogawa, Satoshi Ishizawa, Masashi Shida
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Publication number: 20140225474Abstract: A power-generating system includes a heat source which is able to produce temporal temperature variation, a first device in which polarization occurs based on the temperature change of the heat source, and a second device for taking out a net generating power from the first device, wherein 80% or higher of the total surface area of the first device is heated and/or cooled with the heat source.Type: ApplicationFiled: August 28, 2012Publication date: August 14, 2014Applicants: DAIHATSU MOTOR CO., LTD., NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGYInventors: Yoonho Kim, Juyoung Kim, Satoru Yamanaka, Takeshi Serizawa, Hirohisa Tanaka, Tadachika Nakayama, Masatoshi Takeda, Noboru Yamada, Koichi Niihara