Patents by Inventor Shuji Nakamura

Shuji Nakamura 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).

  • Publication number: 20190260324
    Abstract: A rotary electric device control device controls driving of a rotary electric device including a plurality of winding sets. The rotary electric device control device includes: a plurality of drive circuits; and a plurality of control units. The control units include signal output units for outputting control signals to the drive circuits corresponding to the control units, respectively, and communicate with each other. The control units include: one master control unit; and at least one slave control unit. An electric power steering device includes: a rotary electric device control device; the rotary electric device that outputs an assist torque for assisting a steering operation of a steering wheel by a driver; and a power transmission unit that transmits a driving force of the rotary electric device to a drive target.
    Type: Application
    Filed: May 7, 2019
    Publication date: August 22, 2019
    Inventors: Shuji KURAMITSU, Koichi NAKAMURA, Atsuko OKA, Masaya TAKI, Hideki KABUNE, Yuki WATANABE, Toshimitsu SAKAI, Yosuke OGI
  • Publication number: 20190256129
    Abstract: A rotary electric machine control device for controlling driving of a rotary electric machine including a plurality of winding sets, includes: a plurality of drive circuits; and a plurality of control units, each of which includes: an individual current limit value calculation unit; a current limit value calculation unit; and a control signal calculation unit. The current limit value calculation unit switches between a current limit value sharing mode and a current limit value non-sharing mode. An electric power steering device includes: the rotary electric machine control device; the rotary electric machine that outputs an assist torque for assisting a steering operation of a steering wheel by a driver; and a power transmission unit that transmits a driving force of the rotary electric machine to a drive target.
    Type: Application
    Filed: May 7, 2019
    Publication date: August 22, 2019
    Inventors: Atsuko OKA, Shuji KURAMITSU, Koichi NAKAMURA, Nobuyori NAKAJIMA, Go ENDOH, Yosuke OGI
  • Publication number: 20190256130
    Abstract: A rotary electric device control device for controlling driving of a rotary electric device including a plurality of winding sets, includes: a plurality of drive circuits; and a plurality of control units that include signal output units for outputting control signals to the drive circuits corresponding to the control units, respectively. The one of the control units generates a control signal according to a command value calculated by each system, a host system detection value relating to a detection value of a host system, and another system detection value relating to another detection value of another system. An electric power steering device includes: the rotary electric device control device; the rotary electric device that outputs an assist torque for assisting a steering operation of a steering wheel by a driver; and a power transmission unit that transmits a driving force of the rotary electric device to a drive target.
    Type: Application
    Filed: May 7, 2019
    Publication date: August 22, 2019
    Inventors: Shuji KURAMITSU, Koichi NAKAMURA, Atsuko OKA, Masaya TAKI, Hideki KABUNE
  • Patent number: 10384712
    Abstract: If abnormalities of the sensor part are detected, the power-source control section temporarily stops the electric power supply from the sensor power source to the sensor part so that the sensor power source voltage Vs which is the voltage between the sensor power source and the sensor part falls. In addition, after electric power supply to the sensor part resumes, and the sensor part is recovered from the abnormalities, then, the power source control section continues the electric power supply from the sensor power source to the sensor part. When the sensor part is not recovered from the abnormalities, the power source control section stops the electric power supply from the sensor power source to the sensor part.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: August 20, 2019
    Assignee: DENSO CORPORATION
    Inventors: Katsuhiko Hayashi, Takaharu Kozawa, Shuji Kuramitsu, Kouichi Nakamura, Masaya Taki, Toshimitsu Sakai
  • Patent number: 10384656
    Abstract: A brake pedal device includes a pedal bracket, an operation pedal, an intermediate lever, and a coupling link. The pedal bracket includes a first side plate member and a second side plate member secured to a dash panel and arranged at interval in a vehicle width direction, and is fastened and secured with respect to a vehicle body side bracket located on a vehicle rear side by a nut and a bolt at one location. The first side plate member and the second side plate member include a deformation allowing part and a deformation allowing part between a first support shaft located on a rearward side among the first support shaft and a second support shaft, and an attachment/securing part and an attachment/securing part.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: August 20, 2019
    Assignees: TOYODA IRON WORKS CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiro Tsuguma, Hiroaki Tsuzuki, Shuji Nakamura, Hirotaka Shinada
  • Patent number: 10371955
    Abstract: Provided is a high decorative illumination device that utilizes a lenticular lens sheet. An illumination device includes a lenticular lens sheet and an LED light source. The lenticular lens sheet is curved in an X direction, and a convex surface is formed in a concave shape. The LED light source is positioned inside the convex surface of the lenticular lens sheet. First and second reflection components from first and second bright points which are acquired by reflecting irradiation light rays from the LED light source from plano-convex cylindrical lenses are incident on left and right eyes of an observer who observes the illumination device. The observer observes a virtual image as if a light emitter is present in a position in which the first and second reflection components cross each other.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: August 6, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Samito Nakamura, Hiromi Takenoshita, Daisaku Abiru, Shuji Ono
  • Patent number: 10368470
    Abstract: A reactor unit includes reactors; and a cooler. The reactors are disposed in at least one line on a reactor cooling surface that is one of outer surfaces of the cooler. The cooler has a cooling medium flow passage that is in contact with an inner surface on a reverse side of the reactor cooling surface. The cooling medium flows linearly from an inlet portion to an outlet portion of the cooling medium flow passage. A direction in which the cooling medium flows inside the cooling medium flow passage is same as a direction in which the reactors are disposed in the at least one line. Cooling fins are provided on the inner surface on the reverse side of the reactor cooling surface. A longitudinal direction of each cooling fin is same as the direction in which the cooling medium flows inside the cooling medium flow passage.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: July 30, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Ikuhiro Nakamura, Shuji Kawamura, Kozo Matsuura, Koji Katano, Hiroyuki Sekine
  • Patent number: 10351166
    Abstract: A sensor device includes a first sensor section and a second sensor section, and the first sensor section has sensor elements and an output circuit for generating and transmitting an output signal including signals that respectively correspond to sensing values from the two sensor elements, and the second sensor section has sensor elements and an output circuit for generating and transmitting an output signal including signals that respectively correspond to sensing values from the two sensor elements. The sensor device further includes an ECU that has an abnormality determiner for determining abnormality of the sensor sections, and a calculator, thereby enabling a continuation of abnormality monitoring of a normal sensor section, even when a part of the sensor sections is abnormal.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: July 16, 2019
    Assignee: DENSO CORPORATION
    Inventors: Koichi Nakamura, Katsuhiko Hayashi, Takaharu Kozawa, Shuji Kuramitsu, Masaya Taki, Toshimitsu Sakai
  • Patent number: 10344764
    Abstract: An axial blower includes: a housing including a wind tunnel; an impeller that is disposed in the wind tunnel and includes a plurality of blades; and a motor that includes a rotation shaft and is secured to the housing, the impeller being secured to the rotation shaft. When an angle between a chord of the blade at a cross-sectional surface of the blade cut by a virtual cylindrical surface centering the rotation shaft, and a surface perpendicular to the rotation shaft is defined as a mounting angle, the blade includes an intermediate part between an inside diameter side part and an outside diameter side part of the blade, and this intermediate part has a mounting angle equal to or larger than a mounting angle of the inside diameter side part, and larger than a mounting angle of the outside diameter side part.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: July 9, 2019
    Assignee: SANYO DENKI CO., LTD.
    Inventors: Toshiyuki Nakamura, Shuji Miyazawa
  • Patent number: 10343714
    Abstract: A sensor device includes sensors and an Electronic Control Unit (ECU). The sensors include sensor elements, a signal comparator, and a signal transmitter. The signal comparator compares a first main detection value from one of the sensor elements, and a first sub detection value from the other of the sensor elements. When the first main detection value matches the first sub detection value, the signal transmitter generates and transmits an output signal that includes a first main signal corresponding to the first main detection value without including a first sub signal corresponding to the first sub detection value. In such manner, the responsiveness of the sensor device may be improved, without deteriorating a reliability of the output signals from the sensor sections.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: July 9, 2019
    Assignee: DENSO CORPORATION
    Inventors: Koutarou Nakashima, Shuji Kuramitsu, Kouichi Nakamura, Masaya Taki, Toshimitsu Sakai, Takaharu Kozawa, Katsuhiko Hayashi
  • Publication number: 20190207043
    Abstract: A physical vapor deposition (e.g., sputter deposition) method for III-nitride tunnel junction devices uses metal-organic chemical vapor deposition (MOCVD) to grow one or more light-emitting or light-absorbing structures and electron cyclotron resonance (ECR) sputtering to grow one or more tunnel junctions. In another method, the surface of the p-type layer is treated before deposition of the tunnel junction on the p-type layer. In yet another method, the whole device (including tunnel junction) is grown using MOCVD and the p-type layers of the III-nitride material are reactivated by lateral diffusion of hydrogen through mesa sidewalls in the III-nitride material, with one or more lateral dimensions of the mesa that are less than or equal to about 200 ?m. A flip chip display device is also disclosed.
    Type: Application
    Filed: August 17, 2017
    Publication date: July 4, 2019
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Benjamin P. Yonkee, Asad J. Mughal, David Hwang, Erin C. Young, James S. Speck, Steven P. DenBaars, Shuji Nakamura
  • Patent number: 10328972
    Abstract: In a rotation detecting apparatus, a sensor includes a sensor element outputting a measurement value representing rotation of a detection target, and a circuit module. The circuit module includes a rotational angle calculator calculating, based on the measurement value, rotational angle information indicative of a rotational angle of the detection target. The rotational angle calculator generates a rotational angle signal including the rotational angle information. The circuit module includes a rotation number calculator calculating, based on the measurement value, rotation number information representing the number of rotations of the detection target. The rotation number calculator generates a rotation number signal including the rotation number information. An output unit outputs, as an output signal, a series of the rotational angle signal and the rotation number signal.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: June 25, 2019
    Assignee: DENSO CORPORATION
    Inventors: Toshihiro Fujita, Hideki Kabune, Katsuhiko Hayashi, Takaharu Kozawa, Shuhei Miyachi, Koichi Nakamura, Yuki Watanabe, Atsuko Oka, Shuji Kuramitsu, Toshimitsu Sakai, Masaya Taki
  • Publication number: 20190165213
    Abstract: A III-Nitride LED which utilizes n-type III-Nitride layers for current spreading on both sides of the device. A multilayer dielectric coating is used underneath the wire bond pads, both LED contacts are deposited in one step, and the p-side wire bond pad is moved off of the mesa. The LED has a wall plug efficiency or External Quantum Efficiency (EQE) over 70%, a fractional EQE droop of less than 7% at 20 A/cm2 drive current and less than 15% at 35 A/cm2 drive current. The LEDs can be patterned into an LED array and each LED can have an edge dimension of between 5 and 50 ?m. The LED emission wavelength can be below 400 nm and aluminum can be added to the n-type III-Nitride layers such that the bandgap of the n-type III-nitride layers is larger than the LED emission photon energy.
    Type: Application
    Filed: August 17, 2017
    Publication date: May 30, 2019
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Benjamin P. Yonkee, Erin C. Young, James S. Speck, Steven P. DenBaars, Shuji Nakamura
  • Patent number: 10300944
    Abstract: A sensor device including a first output circuit generating and outputting a first output signal that is generated as a signal sequence from a first main signal based on a detection value of a first main sensor element to a first sub signal based on a detection value of a first sub sensor element, a second output circuit generating and outputting a second output signal that is generated as a signal sequence from a second main signal based on a detection value of a second main sensor element to a second sub signal based on a detection value of a second sub sensor element, and an abnormality determiner determining abnormality of the device based on the first output signal and the second output signal.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: May 28, 2019
    Assignee: DENSO CORPORATION
    Inventors: Takaharu Kozawa, Shuji Kuramitsu, Koichi Nakamura, Katsuhiko Hayashi, Masaya Taki, Toshimitsu Sakai
  • Publication number: 20190152524
    Abstract: In a rotation detecting apparatus, each of first and second sensor elements measures rotation of a detection target. A circuit module includes first and second rotational angle calculators each calculating, based on a corresponding one of a first measurement value of the first sensor element and a second measurement value of the second sensor element, a rotational angle of the detection target. The circuit module includes first and second rotation number calculators each calculating, based on the corresponding one of the first measurement value and the second measurement value, a rotation number of the detection target. The circuit module includes first and second communicators each outputting, to a controller, a rotational angle signal based on the rotational angle and a rotation number signal based on the rotation number. A package packages the first and second sensor elements, and is mounted to a circuit board separately from the controller.
    Type: Application
    Filed: April 6, 2017
    Publication date: May 23, 2019
    Inventors: Toshihiro FUJITA, Katsuhiko HAYASHI, Takaharu KOZAWA, Shuhei MIYACHI, Koichi NAKAMURA, Yuki WATANABE, Atsuko OKA, Shuji KURAMITSU, Toshimitsu SAKAI, Masaya TAKI
  • Publication number: 20190144030
    Abstract: A motor control apparatus include: multiple motor drive circuits that drives at least one motor; multiple microcomputers that include a drive signal generator, and a drive timing generator; and multiple clock generation circuits. The microcomputers include a synchronization signal transmitter microcomputer as at least one microcomputer that transmits a synchronization signal synchronized with the drive timing of an own microcomputer and synchronizing the drive timing of the microcomputers. The microcomputers include a synchronization signal receiver microcomputer as at least one microcomputer that receives the synchronization signal transmitted from the synchronization signal transmitter microcomputer.
    Type: Application
    Filed: January 9, 2019
    Publication date: May 16, 2019
    Inventors: Toshimitsu SAKAI, Masaya TAKI, Shuji KURAMITSU, Koichi NAKAMURA
  • Publication number: 20190144028
    Abstract: A synchronization signal generating portion of a transmitter microcomputer generates a synchronization signal that is synchronized with a drive timing of the own microcomputer and also causes to synchronize the drive timing of microcomputers, and transmits to a receiver microcomputer. A timing corrector of the receiver microcomputer is capable of correcting the drive timing of the own microcomputer so as to synchronize with the received synchronization signal, and includes a timing determiner which determines whether the received synchronization signal is normal or abnormal. The receiver microcomputer permits the timing correction if the synchronization signal is determined to be normal in the timing determination, and prohibits timing correction and drives the motor asynchronously with the transmitter microcomputer if the synchronization signal is determined to be abnormal.
    Type: Application
    Filed: January 9, 2019
    Publication date: May 16, 2019
    Inventors: Masaya TAKI, Shuji KURAMITSU, Koichi NAKAMURA, Toshimitsu SAKAI
  • Publication number: 20190144029
    Abstract: A motor control apparatus includes: multiple motor drive circuits that drive at least one motor; and multiple microcomputers that are operated by a microcomputer power source and include a drive signal generator that generates a motor drive signal. The microcomputers include at least one microcomputer including a stop determiner that determines that operation of an own microcomputer is about to be stopped and transmits information as a stop determination signal. A microcomputer having received the stop determination signal from at least one different microcomputer actually stops operation of an own microcomputer.
    Type: Application
    Filed: January 9, 2019
    Publication date: May 16, 2019
    Inventors: Masaya TAKI, Toshimitsu SAKAI, Koichi NAKAMURA, Shuji KURAMITSU
  • Patent number: D851506
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: June 18, 2019
    Assignee: OMRON Corporation
    Inventors: Shuji Kawahara, Kayo Nakamura, Naotsugu Ueda
  • Patent number: D853911
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: July 16, 2019
    Assignee: Mazda Motor Corporation
    Inventors: Koji Miyamoto, Shuji Sakata, Hiroaki Yokoi, Takayuki Nakamura, Masahiro Kagekata, Yumi Kumagai