Patents by Inventor Yousuke Nakagawa
Yousuke Nakagawa 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: 20230152359Abstract: In leakage detecting device (10) that detects an electric leakage from a high-voltage unit in which power storage unit (20) and a load are connected by a power supply line in a state of being insulated from an earth, Y capacitor (CY) is connected between the earth and a current path between power storage unit (20) and the load. Drive unit (11) of leakage detecting device (10) outputs a rectangular wave voltage to the current path between power storage unit (20) and the load via driving coupling capacitor (Cd1) to charge or discharge Y capacitor (CY). Leakage detector (12) determines presence or absence of the electric leakage between the current path and the earth according to a time transition in which the voltage at the measurement point of the current path changed according to charging or discharging of Y capacitor (CY) converges to an original voltage.Type: ApplicationFiled: November 19, 2020Publication date: May 18, 2023Inventor: YOUSUKE NAKAGAWA
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Patent number: 11489347Abstract: A voltage measurement unit measures voltages of the plurality of cells connected in series. A plurality of discharge circuits are connected in parallel to the plurality of cells, respectively. A controller controls, based on the voltages of the plurality of cells detected by voltage measurement unit, the plurality of discharge circuits to make the voltages or capacities of the plurality of cells equal to a target value. The controller determines a number of cells to be discharged among the plurality of cells in accordance with an allowable temperature of a substrate having the plurality of discharge circuits.Type: GrantFiled: November 16, 2018Date of Patent: November 1, 2022Assignee: SANYO Electric Co., Ltd.Inventors: Yousuke Nakagawa, Masanori Ito, Masato Nakayama, Hidetsugu Mukae
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Patent number: 11444469Abstract: In order to improve safety while suppressing a decrease in efficiency of an equalizing process between a plurality of cells, controller executes an equalizing process between a plurality of cells by controlling a plurality of discharge circuits based on voltages of the plurality of cells measured by voltage measurement unit. Anomaly determination circuit determines whether or not the voltage of each of cells measured by voltage measurement unit is within a normal range. Controller includes, for each first cycle, a first discharge suspension period during which the voltages of the plurality of cells are measured without an influence of the equalizing process during execution of the equalizing process between the plurality of cells and includes, for each second cycle longer than the first cycle, a second discharge suspension period during which a determination result according to anomaly determination circuit is fixed.Type: GrantFiled: April 5, 2019Date of Patent: September 13, 2022Assignee: SANYO Electric Co., Ltd.Inventors: Masato Nakayama, Hidetsugu Mukae, Yousuke Nakagawa, Masanori Ito
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Publication number: 20220106935Abstract: At least one of nozzle holes is provided as a non-circular nozzle hole where the ratio of the longest diameter to the shortest diameter of an outlet opening portion is greater than 1. A virtual non-circular cone and a virtual circular cone are defined for each of the non-circular nozzle hole and a circular nozzle hole where the ratio of the longest diameter to the shortest diameter of the outlet opening portion is 1. At least two adjacent nozzle holes are formed such that the virtual non-circular cone does not interfere with the virtual circular cone or the virtual non-circular cone.Type: ApplicationFiled: December 17, 2021Publication date: April 7, 2022Inventors: Hiroki KANETA, Hajime KATAOKA, Masayuki NIWA, Noritsugu KATOU, Yousuke NAKAGAWA, Masahiro OOKUMA, Sao YOSHIDOME, Gen TAKAI
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Publication number: 20210234378Abstract: In order to improve safety while suppressing a decrease in efficiency of an equalizing process between a plurality of cells, controller executes an equalizing process between a plurality of cells by controlling a plurality of discharge circuits based on voltages of the plurality of cells measured by voltage measurement unit. Anomaly determination circuit determines whether or not the voltage of each of cells measured by voltage measurement unit is within a normal range. Controller includes, for each first cycle, a first discharge suspension period during which the voltages of the plurality of cells are measured without an influence of the equalizing process during execution of the equalizing process between the plurality of cells and includes, for each second cycle longer than the first cycle, a second discharge suspension period during which a determination result according to anomaly determination circuit is fixed.Type: ApplicationFiled: April 5, 2019Publication date: July 29, 2021Inventors: MASATO NAKAYAMA, HIDETSUGU MUKAE, YOUSUKE NAKAGAWA, MASANORI ITO
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Publication number: 20200412134Abstract: A voltage measurement unit measures voltages of the plurality of cells connected in series. A plurality of discharge circuits are connected in parallel to the plurality of cells, respectively. A controller controls, based on the voltages of the plurality of cells detected by voltage measurement unit, the plurality of discharge circuits to make the voltages or capacities of the plurality of cells equal to a target value. The controller determines a number of cells to be discharged among the plurality of cells in accordance with an allowable temperature of a substrate having the plurality of discharge circuits.Type: ApplicationFiled: November 16, 2018Publication date: December 31, 2020Applicant: SANYO Electric Co., Ltd.Inventors: Yousuke Nakagawa, Masanori Ito, Masato Nakayama, Hidetsugu Mukae
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Patent number: 9947266Abstract: A retention unit which retains input data, and a light emission control unit which compensates a value of a drive current that flows to a light emission element based on the input data which is retained in the retention unit, are provided in each pixel unit of a display device. While the light emission control unit displays input data of an image of an Nth frame during a light emission period TL (N) by driving the light emission element, input data of an image of an (N+1)th frame is written to the retention unit which becomes a pair together with the light emission control unit, as processing in a write processing period TS (N+1) of the (N+1)th frame.Type: GrantFiled: December 13, 2013Date of Patent: April 17, 2018Assignee: Sharp Kabushiki KaishaInventors: Yousuke Nakagawa, Kazuhiro Maeda
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Patent number: 9922612Abstract: Upon each detection of an image switch by a display switch detection portion (27) included in a display control circuit (200), a selection frequency determination portion (23) makes a determination for each row corresponding to a scanning signal line as to whether or not the row includes any pixel with a middle tone. Further, a scanning signal output control portion (26) performs drive control such that any scanning signal line corresponding to a row without such a pixel is selected at intervals of one frame period. This results in reduced power consumption in selecting the scanning signal lines.Type: GrantFiled: June 14, 2016Date of Patent: March 20, 2018Assignee: Sharp Kabushiki KaishaInventors: Yousuke Nakagawa, Kazuhiro Maeda
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Publication number: 20170361296Abstract: A fuel reformer for producing a steam reforming reaction between fuel and water on a reforming catalyst includes a fuel injection part that injects and supplies fuel into the reforming catalyst, and an injection control part that controls an injection amount of fuel by the fuel injection part. The injection control part controls the injection amount in order that a temperature of the reforming catalyst is not lower than a preset given temperature. The fuel reformer further includes a temperature obtaining part that measures or estimates the temperature of the reforming catalyst, and a target value calculation part that calculates a target value of the injection amount, such that the temperature of the reforming catalyst after fuel is injected by the fuel injection part is equal to or higher than the given temperature. The fuel injection part is controlled such that the injection amount coincides with the target value.Type: ApplicationFiled: December 21, 2015Publication date: December 21, 2017Inventors: Kenji AOYAGI, Yousuke NAKAGAWA
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Publication number: 20170333843Abstract: A fuel reformer for producing a steam reforming reaction between fuel and water on a reforming catalyst includes a fuel injection part that injects and supplies fuel into the reforming catalyst, a temperature measurement part that measures a temperature of the reforming catalyst, and a determination part that determines whether a process for recovering the reforming catalyst is necessary. The determination by the determination part is made based on a temperature change of the reforming catalyst when the steam reforming reaction is produced.Type: ApplicationFiled: December 21, 2015Publication date: November 23, 2017Applicant: DENSO CORPORATIONInventors: Kenji AOYAGI, Yousuke NAKAGAWA
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Patent number: 9614501Abstract: A pulse generation circuit is configured with a plurality of transistors of a single conductivity type. The pulse generation circuit includes: an output unit including a current limiting element configured to supply, by a predetermined current, a first voltage from a first power supply line supplied with the first voltage to an output terminal, the output unit being configured to perform a bootstrap operation that outputs the first voltage to the output terminal in response to a received input signal; and an output control unit configured to initiate the bootstrap operation when the output terminal transitions to the first voltage, and after the output terminal transitions to the first voltage, terminate the bootstrap operation and perform control so as to output the first voltage from the current limiting element to the output terminal.Type: GrantFiled: October 21, 2013Date of Patent: April 4, 2017Assignee: Sharp Kabushiki KaishaInventors: Kazuhiro Maeda, Yousuke Nakagawa
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Patent number: 9514697Abstract: When there are a plurality of rows with the same display content, a scanning order calculating portion (23) provided in a display control circuit (200) determines addresses sequentially such that scanning signal lines corresponding to the rows are selected at the same time. A scanning order setting portion (24) controls an address output portion (26) such that the scanning signal lines are selected in such an order, and also controls digital image signals DV outputted by output frame memory (22). In this case, the number of changes in potential for video signal lines can be reduced by the number of rows selected at the same time, resulting in reduced power consumption for driving the video signal lines.Type: GrantFiled: May 22, 2013Date of Patent: December 6, 2016Assignee: Sharp Kabushiki KaishaInventors: Kazuhiro Maeda, Yousuke Nakagawa
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Patent number: 9488521Abstract: In a method of operating an optical sensor circuit (11) in accordance with one embodiment of the present invention, main reset is performed prior to sensing of incident light with use of a PIN diode (4) and, between the main reset and next main reset, auxiliary reset is performed so that a potential of a cathode terminal of the PIN diode (4) is reduced within a predetermined range within which storage of carriers is not induced in an intrinsic region of the PIN diode (4).Type: GrantFiled: December 5, 2012Date of Patent: November 8, 2016Assignee: Sharp Kabushiki KaishaInventors: Kazuhiro Maeda, Hiroaki Sugiyama, Yousuke Nakagawa, Yasuhiro Sugita
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Publication number: 20160284307Abstract: Upon each detection of an image switch by a display switch detection portion (27) included in a display control circuit (200), a selection frequency determination portion (23) makes a determination for each row corresponding to a scanning signal line as to whether or not the row includes any pixel with a middle tone. Further, a scanning signal output control portion (26) performs drive control such that any scanning signal line corresponding to a row without such a pixel is selected at intervals of one frame period. This results in reduced power consumption in selecting the scanning signal lines.Type: ApplicationFiled: June 14, 2016Publication date: September 29, 2016Inventors: Yousuke NAKAGAWA, Kazuhiro MAEDA
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Patent number: 9401119Abstract: Upon each detection of an image switch by a display switch detection portion (27) included in a display control circuit (200), a selection frequency determination portion (23) makes a determination for each row corresponding to a scanning signal line as to whether or not the row includes any pixel with a middle tone. Further, a scanning signal output control portion (26) performs drive control such that any scanning signal line corresponding to a row without such a pixel is selected at intervals of one frame period. This results in reduced power consumption in selecting the scanning signal lines.Type: GrantFiled: May 22, 2013Date of Patent: July 26, 2016Assignee: Sharp Kabushiki KaishaInventors: Yousuke Nakagawa, Kazuhiro Maeda
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Publication number: 20150325168Abstract: A retention unit which retains input data, and a light emission control unit which compensates a value of a drive current that flows to a light emission element based on the input data which is retained in the retention unit, are provided in each pixel unit of a display device. While the light emission control unit displays input data of an image of an Nth frame during a light emission period TL (N) by driving the light emission element, input data of an image of an (N+1)th frame is written to the retention unit which becomes a pair together with the light emission control unit, as processing in a write processing period TS (N+1) of the (N+1)th frame.Type: ApplicationFiled: December 13, 2013Publication date: November 12, 2015Inventors: Yousuke NAKAGAWA, Kazuhiro MAEDA
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Publication number: 20150295565Abstract: A pulse generation circuit is configured with a plurality of transistors of a single conductivity type. The pulse generation circuit includes: an output unit including a current limiting element configured to supply, by a predetermined current, a first voltage from a first power supply line supplied with the first voltage to an output terminal, the output unit being configured to perform a bootstrap operation that outputs the first voltage to the output terminal in response to a received input signal; and an output control unit configured to initiate the bootstrap operation when the output terminal transitions to the first voltage, and after the output terminal transitions to the first voltage, terminate the bootstrap operation and perform control so as to output the first voltage from the current limiting element to the output terminal.Type: ApplicationFiled: October 21, 2013Publication date: October 15, 2015Applicant: Sharp Kabushiki KaishaInventors: Kazuhiro Maeda, Yousuke Nakagawa
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Patent number: 9146635Abstract: Provided is a touch panel-equipped display device (10) including: a touch panel (14); a display part (12) including source bus lines (25); a source bus line potential switching part that switches the potential of each source bus line (25) in a source bus line potential switching period (54) that is a partial period of a vertical blanking period (51); and a sensing part that performs sensing for a touch panel in a sensing period (53) that is a period in the vertical blanking period (51) other than the partial period.Type: GrantFiled: April 9, 2012Date of Patent: September 29, 2015Assignee: SHARP KABUSHIKI KAISHAInventors: Yousuke Nakagawa, Kazuhiro Maeda
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Patent number: 9141244Abstract: The touch panel (1a) of the present invention includes a plurality of driver electrodes (2), a plurality of detection electrodes (3) that extend in the column direction, and a complementary electrode (4), which extends in the direction in which the driver electrodes extend, and which forms a parasitic capacitance that corresponds to capacitance components that are not affected during detection of an object to be detected that comes into contact with or approaches the detection surface among the parasitic capacitances formed in the gaps between the driver electrodes (2) and the detection electrodes (3), in the gap from the detection electrodes (3).Type: GrantFiled: April 9, 2012Date of Patent: September 22, 2015Assignee: SHARP KABUSHIKI KAISHAInventors: Kazuhiro Maeda, Yousuke Nakagawa
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Patent number: 9081459Abstract: The touch panel of the present invention is a touch panel (1) that applies drive signals to drive electrodes (2) and carries out detection on the basis of the variation in the amount of charge that has been induced on detection electrodes (3), and is configured such that when drive signals are being applied to the drive electrodes, complementary signals having a different phase from the drive signals are applied to complementary electrodes (4), and the complimentary electrodes (4) are configured such that the amplitude (?Vcm) of the complimentary signals satisfies the following formula: ?Vcm=??VdrĂ—(Cfo+Ccr)/Ccm.Type: GrantFiled: April 9, 2012Date of Patent: July 14, 2015Assignee: SHARP KABUSHIKI KAISHAInventors: Kazuhiro Maeda, Yousuke Nakagawa