Patents by Inventor Masataka Yoshimura

Masataka Yoshimura 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: 20200274422
    Abstract: A temperature sensor in a rotating electric machine is disposed or installed on a surface of a temperature detection object. The temperature detection object, i.e., an installation portion, has a thickness. The temperature sensor has an inner case housing a detector element. The inner case is made of resin. The inner case has a thickness. A temperature detecting device has an outer case housing the temperature sensor. The outer case is made of resin. A linear expansion coefficient of the outer case is, within a certain temperature range including a threshold temperature for a protection of the rotating electric machine, is smaller than an average of linear expansion coefficients of the installation portion and the inner case.
    Type: Application
    Filed: February 25, 2020
    Publication date: August 27, 2020
    Applicant: DENSO CORPORATION
    Inventors: Takaharu MUROOKA, Masataka YOSHIMURA
  • Patent number: 10378922
    Abstract: A rotation angle detection apparatus includes a magnet that is provided to a rotating shaft of a rotating body and rotates with the rotating shaft to generate magnetic flux and a magnetic sensor that is provided at a distance from the magnet and detects a magnetic flux interlinked with the magnetic sensor. The rotation angle detection apparatus has a magnet magnetic flux detection circuit that detects a magnet magnetic flux generated from the magnet, a disturbance magnetic flux detection circuit that detects a disturbance magnetic flux, which is a magnetic flux other than the magnet magnetic flux and is interlinked with the magnetic sensor, and a correction circuit that corrects a result of detection of the magnetic sensor based on a result of detection of the magnet magnetic flux detection circuit and a result of detection of the disturbance magnetic flux detection circuit.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: August 13, 2019
    Assignee: DENSO CORPORATION
    Inventors: Takuya Kawamura, Hirofumi Kinjou, Toru Wakimoto, Hideaki Nakayama, Masataka Yoshimura
  • Publication number: 20190235318
    Abstract: A liquid crystal display device includes: a liquid crystal display panel that includes red color filters, green color filters, and blue color filters; and an illumination device that illuminates the liquid crystal display panel with white light. The illumination device includes light-emitting elements that emit blue light, a green phosphor that absorbs a portion of the blue light emitted from the light-emitting elements and then emits green light, and a red phosphor that absorbs a portion of the blue light emitted from the light-emitting elements and then emits red light. The blue color filters are made of a colored material that contains a dye, and the chromaticity values x and y of the white light emitted from the illumination device satisfy the relationships 0.24<x and 0.24<y.
    Type: Application
    Filed: February 25, 2019
    Publication date: August 1, 2019
    Inventors: MASATSUGU MASUDA, HIDEAKI FUJII, TAKESHI KAWAHARA, TOSHIYUKI TANAKA, KENICHI YOSHIMURA, MAKOTO YOSHIMURA, MASATAKA MIYATA, TAKEHIRO SHIOMOTO
  • Patent number: 10006784
    Abstract: A correction circuit stores data for obtaining coefficients of a relational expression indicating a relationship between a disturbance magnetic flux and a rotational angle error. Then, the coefficients are obtained from the data for obtaining the coefficients, and a detection result of a magnetic sensor is corrected based on the coefficients obtained, a relational expression, and a detection result of a disturbance magnetic flux detection circuit. Since it is possible to obtain the rotational angle error with respect to the disturbance magnetic flux from the coefficient obtained and the relational expression, it is not necessary to store the data indicating the relationship between the disturbance magnetic flux and the rotational angle error for all of the disturbance magnetic flux value in disturbance magnetic flux regions that may be applied.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: June 26, 2018
    Assignee: DENSO CORPORATION
    Inventors: Takuya Kawamura, Hirofumi Kinjou, Toru Wakimoto, Hideaki Nakayama, Masataka Yoshimura
  • Publication number: 20170363444
    Abstract: A rotation angle detection apparatus includes a magnet that is provided to a rotating shaft of a rotating body and rotates with the rotating shaft to generate magnetic flux and a magnetic sensor that is provided at a distance from the magnet and detects a magnetic flux interlinked with the magnetic sensor. The rotation angle detection apparatus has a magnet magnetic flux detection circuit that detects a magnet magnetic flux generated from the magnet, a disturbance magnetic flux detection circuit that detects a disturbance magnetic flux, which is a magnetic flux other than the magnet magnetic flux and is interlinked with the magnetic sensor, and a correction circuit that corrects a result of detection of the magnetic sensor based on a result of detection of the magnet magnetic flux detection circuit and a result of detection of the disturbance magnetic flux detection circuit.
    Type: Application
    Filed: January 13, 2016
    Publication date: December 21, 2017
    Applicant: DENSO CORPORATION
    Inventors: Takuya KAWAMURA, Hirofumi KINJOU, Toru WAKIMOTO, Hideaki NAKAYAMA, Masataka YOSHIMURA
  • Publication number: 20170346429
    Abstract: A controller-integrated rotating electrical machine incudes a rotating electrical machine and a control device. The rotating electrical machine is equipped with a stator and a rotor. The control device is equipped with a control circuit for an inverter circuit and an angle position sensing device which works to measure an angular position of the rotor. The control device has first substrate on which the control circuit is mounted and a second substrate on which the angle position sensing device is mounted. The first substrate is located closer to the rotating electrical machine than the angle position sensing device is in an axial direction of the controller-integrated rotating electrical machine. This minimizes adverse effects of magnetic flux, as generated by the rotating electrical machine, on operation of the angle position sensing device, thereby enhancing a measurement accuracy of the angle positon sensing device.
    Type: Application
    Filed: May 30, 2017
    Publication date: November 30, 2017
    Applicant: DENSO CORPORATION
    Inventors: Hiroshi INAMURA, Yuki SUZUKI, Koji KONDO, Nobuhiro ASANO, Yuki MAWATARI, Masataka YOSHIMURA
  • Publication number: 20170317562
    Abstract: A rotating electric machine integrated with a controller includes a rotating electric machine provided with a stator having three phase stator windings, a power converter configuring the control circuit of the rotating electric machine, a control board equipped with electronic components, and a plurality of modules provided with a plurality of switching elements controlled by the control circuit. At least one of the modules is provided with the switching elements controlling the two different sets of stator windings, and a detection element detecting a state of the module.
    Type: Application
    Filed: April 26, 2017
    Publication date: November 2, 2017
    Applicant: DENSO CORPORATION
    Inventors: Nobuhiro ASANO, Yuki MAWATARI, Koji KONDO, Hiroshi INAMURA, Masataka YOSHIMURA, Yuki SUZUKI
  • Publication number: 20160265942
    Abstract: A correction circuit stores data for obtaining coefficients of a relational expression indicating a relationship between a disturbance magnetic flux and a rotational angle error. Then, the coefficients are obtained from the data for obtaining the coefficients, and a detection result of a magnetic sensor is corrected based on the coefficients obtained, a relational expression, and a detection result of a disturbance magnetic flux detection circuit. Since it is possible to obtain the rotational angle error with respect to the disturbance magnetic flux from the coefficient obtained and the relational expression, it is not necessary to store the data indicating the relationship between the disturbance magnetic flux and the rotational angle error for all of the disturbance magnetic flux value in disturbance magnetic flux regions that may be applied.
    Type: Application
    Filed: March 4, 2016
    Publication date: September 15, 2016
    Applicant: DENSO CORPORATION
    Inventors: Takuya KAWAMURA, Hirofumi KINJOU, Toru WAKIMOTO, Hideaki NAKAYAMA, Masataka YOSHIMURA
  • Patent number: 9081920
    Abstract: The present invention enables structural optimization having a high degree of freedom, such as the allowance of a change in topology in a material domain ?, and provides clear expression of the shape of optimum structures. The present invention defines a level set function ?; updates the level set function ?, under a predetermined constraint condition, so as to bring a performance of a structure, such as a rigidity, close to a target value; moves the boundary ?? between the material domain ? and a void domain; allows a change in topology in the material domain ?, which is associated with the update of the level set function ?, to form a new void domain in the material domain ?; and moves the boundary ?? between the new void domain and the material domain ?.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: July 14, 2015
    Assignee: KYOTO UNIVERSITY
    Inventors: Takayuki Yamada, Shinji Nishiwaki, Kazuhiro Izui, Masataka Yoshimura
  • Publication number: 20110270587
    Abstract: The present invention enables a shape of an optimum structure to be clearly represented, and structural optimization having a high degree of freedom such as the allowance of a change in topology in a material domain ? to be performed. The present invention sets a level set function ?; under a predetermined constraint condition, updates the level set function ? so as to bring a performance of a structure, such as a rigidity, close to a target value; moves a boundary ?? between the material domain ? and a void domain; allows a change in topology in the material domain ?, which is associated with the update of the level set function ?, to form a new void domain in the material domain ?; and moves a boundary ?? between the new void domain and the material domain ?.
    Type: Application
    Filed: July 17, 2009
    Publication date: November 3, 2011
    Inventors: Takayuki Yamada, Shinji Nishiwaki, Kazuhiro Izui, Masataka Yoshimura
  • Patent number: 7336757
    Abstract: A CCD shift register capable of switching between two-phase driving and three-phase driving in which crosstalk among clock signal lines is reduced and a decrease in transfer efficiency is prevented. Transfer electrodes disposed at regular intervals along a channel region are supplied with clock signals through clock signal lines. Three pairs of clock signal lines that are supplied with an in-phase clock signal at three-phase driving are disposed next to each other. One pair of odd-numbered clock signal lines supplied with an in-phase clock signal at two-phase driving is disposed next to each other, and one pair of even-numbered clock signal lines supplied with an in-phase clock signal at two-phase driving is disposed next to each other.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: February 26, 2008
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Masataka Yoshimura, Masaaki Ohashi
  • Publication number: 20070239411
    Abstract: The optimal design support system is to design a structure that outputs a desired load or displacement to a portion by using elastic deformation when a load or displacement is applied to a predetermined portion.
    Type: Application
    Filed: July 13, 2005
    Publication date: October 11, 2007
    Applicant: KYOTO UNIVERSITY
    Inventors: Shinsuke Yamashita, Masakazu Kobayashi, Shinji Nishiwaki, Kazuhiro Izui, Masataka Yoshimura, Naohide Tomita
  • Publication number: 20060186949
    Abstract: A CCD shift register capable of switching between two-phase driving and three-phase driving in which crosstalk among clock signal lines is reduced and a decrease in transfer efficiency is prevented. Transfer electrodes disposed at regular intervals along a channel region are supplied with clock signals through clock signal lines. Three pairs of clock signal lines that are supplied with an in-phase clock signal at three-phase driving are disposed next to each other. One pair of odd-numbered clock signal lines supplied with an in-phase clock signal at two-phase driving is disposed next to each other, and one pair of even-numbered clock signal lines supplied with an in-phase clock signal at two-phase driving is disposed next to each other.
    Type: Application
    Filed: February 21, 2006
    Publication date: August 24, 2006
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Masataka Yoshimura, Masaaki Ohashi
  • Patent number: 6597237
    Abstract: A reference potential generator for maintaining a regulated potential even when a power supply potential decreases. When the power supply potential decreases and a potential difference between the power supply potential and a potential at a node of a first circuit becomes lower than a threshold value of an inverter transistor, the inverter transistor is deactivated. This decreases a gate potential of a transistor, which is connected to the inverter transistor, to the ground potential and activates the transistor. In this manner, current is supplied from the power supply potential to a node of a second circuit through the transistor. As a result, the potential (reference potential) at a node of the second circuit increases. This prevents the reference potential from being decreased.
    Type: Grant
    Filed: June 20, 2002
    Date of Patent: July 22, 2003
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Masataka Yoshimura
  • Publication number: 20020196073
    Abstract: A reference potential generator for maintaining a regulated potential even when a power supply potential decreases. When the power supply potential decreases and a potential difference between the power supply potential and a potential at a node of a first circuit becomes lower than a threshold value of an inverter transistor, the inverter transistor is deactivated. This decreases a gate potential of a transistor, which is connected to the inverter transistor, to the ground potential and activates the transistor. In this manner, current is supplied from the power supply potential to a node of a second circuit through the transistor. As a result, the potential (reference potential) at a node of the second circuit increases. This prevents the reference potential from being decreased.
    Type: Application
    Filed: June 20, 2002
    Publication date: December 26, 2002
    Inventor: Masataka Yoshimura