Patents by Inventor Shinya Matsushita

Shinya Matsushita 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).

  • Patent number: 10432106
    Abstract: A power conversion device includes a printed wiring board on which an alternating-current power-supply input part, a converter circuit part to convert alternating-current power to direct-current power, an inverter circuit part to convert direct-current power converted by the converter circuit part to alternating-current power, an alternating-current power-supply output part to output alternating-current power converted by the inverter circuit part, and a conductive pattern to electrically connect the alternating-current power-supply input part, the converter circuit part, the inverter circuit part, and the alternating-current power-supply output part to one another are provided, and a busbar that has a plate-like shape with a plane direction thereof perpendicular to a plane direction of the printed wiring board, is arranged to overlap the conductive pattern in plan view, and includes two or more connecting portions that are in contact with the conductive pattern.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: October 1, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventor: Shinya Matsushita
  • Publication number: 20190174627
    Abstract: A multilayer circuit board includes a laminate of insulating layers, conductive patterns each provided at an interlayer in the laminate, a via conductor extending through at least one of the insulating layers, and external terminals on a lower main surface of the laminate. A shield electrode layer connected to a ground potential is provided on at least one side surface of the laminate. At least one surrounding conductive pattern surrounding an element to be shielded is provided at an interlayer between corresponding ones of the insulating layers. Both ends of the surrounding conductive pattern are connected to the shield electrode layer.
    Type: Application
    Filed: February 7, 2019
    Publication date: June 6, 2019
    Inventor: Shinya MATSUSHITA
  • Patent number: 10310205
    Abstract: An electronic apparatus includes: a hosing including a first facing wall portion and a second facing wall portion which face each other; a cable provided in the housing; and a restriction portion, provided between the first facing wall portion and the second facing wall portion, configured to restrict the first facing wall portion and the second facing wall portion to approach with each other and to retain the cable.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: June 4, 2019
    Assignee: Fujitsu Client Computing Limited
    Inventors: Haruka Tsukasaki, Yutaka Sato, Shinya Matsushita
  • Patent number: 10208991
    Abstract: A heat pump device includes an inverter control unit for controlling an inverter. The inverter control unit includes a constraint-energization control unit that, during operation standby of a compressor, determines whether heating to the compressor is necessary, on the basis of a refrigeration stagnation amount in the compressor, and, when having determined that heating to the compressor is necessary, selects, according to the refrigeration stagnation amount, any one of direct-current energization for supplying a direct-current voltage to the motor and high-frequency energization for supplying a high-frequency voltage having a frequency higher than a frequency during a normal operation to the motor, so as to output a constraint energization command for carrying out constraint energization of the motor; and a driving-signal generating unit that generates a driving signal on the basis of the constraint energization command.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: February 19, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazunori Hatakeyama, Syota Kamiya, Kenta Yuasa, Shinya Matsushita, Shinsaku Kusube, Tsutomu Makino
  • Patent number: 10168745
    Abstract: An information processing apparatus includes: a display unit; a circuit board; a power supply cable coupled to the circuit board; a coupling cable including an overlapping portion that overlaps with the power supply cable as viewed in a thicknesswise direction of the circuit board and coupled to the display unit; and a projection projecting from the circuit board and disposed between the power supply cable and the overlapping portion.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: January 1, 2019
    Inventors: Takashi Abe, Takashi Iijima, Shinya Matsushita
  • Publication number: 20180316274
    Abstract: A power conversion device includes a printed wiring board on which an alternating-current power-supply input part, a converter circuit part to convert alternating-current power to direct-current power, an inverter circuit part to convert direct-current power converted by the converter circuit part to alternating-current power, an alternating-current power-supply output part to output alternating-current power converted by the inverter circuit part, and a conductive pattern to electrically connect the alternating-current power-supply input part, the converter circuit part, the inverter circuit part, and the alternating-current power-supply output part to one another are provided, and a busbar that has a plate-like shape with a plane direction thereof perpendicular to a plane direction of the printed wiring board, is arranged to overlap the conductive pattern in plan view, and includes two or more connecting portions that are in contact with the conductive pattern.
    Type: Application
    Filed: January 21, 2016
    Publication date: November 1, 2018
    Inventor: Shinya MATSUSHITA
  • Patent number: 10110992
    Abstract: A terminal device includes: a first housing including a first opening and a second opening through which sound of a speaker is output; a second housing which is turnably coupled to the first housing and closes the first opening based on a turn angle relative to the first housing; and a closing member which closes the second opening in a state where the first opening is opened by the second housing.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: October 23, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Yutaka Sato, Shinya Matsushita, Haruka Tsukasaki
  • Publication number: 20180081138
    Abstract: An electronic apparatus includes: a hosing including a first facing wall portion and a second facing wall portion which face each other; a cable provided in the housing; and a restriction portion, provided between the first facing wall portion and the second facing wall portion, configured to restrict the first facing wall portion and the second facing wall portion to approach with each other and to retain the cable.
    Type: Application
    Filed: August 29, 2017
    Publication date: March 22, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Haruka Tsukasaki, Yutaka Sato, Shinya Matsushita
  • Publication number: 20180084336
    Abstract: A terminal device includes: a first housing including a first opening and a second opening through which sound of a speaker is output; a second housing which is turnably coupled to the first housing and closes the first opening based on a turn angle relative to the first housing; and a closing member which closes the second opening in a state where the first opening is opened by the second housing.
    Type: Application
    Filed: June 8, 2017
    Publication date: March 22, 2018
    Applicant: FUJITSU LIMITED
    Inventors: Yutaka Sato, Shinya Matsushita, Haruka Tsukasaki
  • Patent number: 9910457
    Abstract: An expansion device includes: a housing onto which an electronic device including a first connector is placed; a second connector, provided on the housing, configured to couple to the first connector; and a positioning member, including a projecting portion that projects from the housing, configured to displace, by a sliding operation with the electronic device being engaged, from a standby position in which the positioning member is restricted to sink into the housing to a coupling position in which the positioning member is allowed to sink into the housing and the first connector and the second connector are capable of coupling with each other.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: March 6, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Haruka Tsukasaki, Shinya Matsushita
  • Patent number: 9903629
    Abstract: A heat pump device includes: a compressor including a compression mechanism compressing a refrigerant and a motor driving the compression mechanism; an inverter unit applying a voltage for driving the motor; an inverter control unit generating a driving signal for driving the inverter unit; and temperature sensors detecting temperatures of the compressor, wherein the inverter control unit includes a normal operation mode in which a refrigerant is compressed by performing a normal operation of the compressor and a heating operation mode in which a heating operation of the compressor is performed by applying, to the motor, a high-frequency voltage, and in the heating operation mode, the inverter control unit determines an amplitude and a phase of a voltage command for generating the high-frequency voltage on a basis of a temperatures detected by the temperature sensors and a necessary amount of heat specified in advance.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: February 27, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shota Kamiya, Kazunori Hatakeyama, Kenta Yuasa, Shinya Matsushita, Shinsaku Kusube, Tsutomu Makino
  • Patent number: 9851754
    Abstract: An information processing device includes: a case; a base member that includes an attachment hole and a positioning hole, and that is provided inside the case; a switch that is fixed to the base member; a button member that includes an operation button that moves toward and away from the switch; an anchor member that is provided at the button member, and that includes an insertion tab that is inserted into the attachment hole and a claw that projects out from a leading end side of the insertion tab and that is hooked onto an edge portion of the attachment hole; and a positioning protrusion that is provided at the button member, and that is inserted into the positioning hole, the positioning hole being formed in an elongated hole shape extending along a projection direction of the claw.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: December 26, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Takashi Abe, Takashi Iijima, Shinya Matsushita
  • Patent number: 9829226
    Abstract: An object of the present invention is to maintain a heating amount constant when a compressor is heated at the time of shutdown of the compressor, regardless of the influences of production tolerance and environment variations. An inverter control unit causes an inverter to generate a high-frequency AC voltage having a de-energized section in which a voltage applied from the inverter to a motor is zero between a section in which the voltage is positive and a section in which the voltage is negative. At this time, the inverter control unit detects a value of a current flowing to the inverter in a detection section residing from immediately before a start of the de-energized section to immediately after an end of the de-energized section, and causes the inverter to generate a high-frequency AC voltage adjusted according to the detected current value.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: November 28, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazunori Hatakeyama, Takuya Shimomugi, Shinya Matsushita, Shinsaku Kusube, Tsutomu Makino
  • Patent number: 9829234
    Abstract: A heat pump device includes an inverter control unit outputting PWM signals to an inverter; a current detection unit detecting a current value flowing in the inverter and outputting the current value after reducing a current value having a first frequency or higher in detected current value; and a drive-signal stop unit that, when the current value output from the current detection unit is equal to or larger than an interruption level, stops output of PWM signals to the inverter. Particularly, the inverter control unit generates a voltage command value such that the voltage command value becomes a value equal to or larger than a lower limit determined according to the first frequency and generates PWM signals based on generated voltage command value and a carrier signal, thereby causing a voltage output time to the motor to be a predetermined time or longer.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: November 28, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazunori Hatakeyama, Syota Kamiya, Kenta Yuasa, Shinya Matsushita, Shinsaku Kusube, Tsutomu Makino
  • Patent number: 9772131
    Abstract: A heat pump device capable of efficiently and reliably preventing a liquid refrigerant from stagnating in a compressor an air conditioner, a heat pump water heater, a refrigerator, and a freezing machine including the heat pump device. The configuration is such that, when the compressor is under operation standby, a high-frequency voltage synchronizing with a carrier signal is supplied to the compressor motor to carry out the locked energization of the compressor motor. From respective inter-phase voltages, respective phase voltages, or respective phase currents of the compressor motor for a plurality of high-frequency energization cycles, the detection values for one high-frequency energization cycle are restored. A power value calculated using the restored detection values for one high-frequency energization cycle is controlled to coincide with a heating power command necessary for discharging the liquid refrigerant stagnated in the compressor to the outside of the compressor.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: September 26, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kazunori Hatakeyama, Shota Kamiya, Kenta Yuasa, Shinya Matsushita, Shinsaku Kusube
  • Patent number: 9746216
    Abstract: A heat pump device includes: a compressor that compresses a refrigerant; a motor that drives the compressor; a wiring switching unit that switches a wiring structure of the motor; an inverter that applies a desired voltage to the motor; and an inverter control unit that generates a PWM signal for driving the inverter, that includes, as an operation mode, a heating operation mode in which a heating operation is performed on the compressor and a normal operation mode in which a refrigerant is compressed by performing a normal operation on the compressor, and that controls a switching operation of the wiring switching unit in accordance with an operation mode.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: August 29, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takashi Yamakawa, Kazunori Hatakeyama, Shota Kamiya, Shinya Matsushita, Shinsaku Kusube, Tsutomu Makino
  • Patent number: 9739515
    Abstract: A heat pump device includes a compressor including a compression mechanism that compresses a refrigerant and a motor that drives the compression mechanism, an inverter that applies a voltage for driving the motor, a converter that applies a voltage to the inverter, an inverter control unit that generates a driving signal for driving the inverter, and a converter control unit that generates a driving signal for driving the converter. The inverter control unit includes a heating-operation-mode control unit that controls a driving-signal generating unit such that the driving-signal generating unit outputs, as inverter driving signals, PWM signals for heating the compressor without rotationally driving the motor by feeding a high-frequency current that the motor cannot follow in a heating operation mode.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: August 22, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shota Kamiya, Kazunori Hatakeyama, Kenta Yuasa, Shinya Matsushita, Shinsaku Kusube, Tsutomu Makino
  • Patent number: 9651289
    Abstract: An adder adds a phase ?plus, which is n times a size of 60 degrees, to a phase output from a phase switching unit and outputs the phase as a voltage command phase ?. A voltage generation unit generates voltage command value based on the voltage command phase output by the adder and outputs the command value. A drive-signal generation unit, based on an output from the voltage generation unit generates drive signals corresponding to respective switching elements of an inverter, and outputs respective generated drive signals to the corresponding switching elements of the inverter, and generates a high-frequency AC voltage in the inverter.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: May 16, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazunori Hatakeyama, Takuya Shimomugi, Shinya Matsushita, Naoki Wakuta, Tsutomu Makino, Shinsaku Kusube
  • Patent number: 9618249
    Abstract: A voltage-command correction-value computation unit outputs a correction value for correcting a voltage command value according to a bus voltage. A multiplier calculates a voltage command value acquired by correcting the voltage command value based on the correction value. A voltage-command generation unit generates and outputs three-phase voltage command values based on the corrected voltage command value calculated by the multiplier and a phase. A PWM-signal generation unit generates six drive signals corresponding to switching elements of an inverter based on the three-phase voltage command values outputted by the voltage-command generation unit and a carrier signal. The PWM-signal generation unit outputs the generated drive signals to the corresponding switching elements of the three-phase inverter, to cause the inerter to generate a high-frequency AC voltage.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: April 11, 2017
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazunori Hatakeyama, Shinya Matsushita, Shinsaku Kusube, Tsutomu Makino
  • Publication number: 20170052567
    Abstract: An information processing apparatus includes: a display unit; a circuit board; a power supply cable coupled to the circuit board; a coupling cable including an overlapping portion that overlaps with the power supply cable as viewed in a thicknesswise direction of the circuit board and coupled to the display unit; and a projection projecting from the circuit board and disposed between the power supply cable and the overlapping portion.
    Type: Application
    Filed: June 20, 2016
    Publication date: February 23, 2017
    Applicant: FUJITSU LIMITED
    Inventors: TAKASHI ABE, TAKASHI IIJIMA, Shinya Matsushita