Patents by Inventor Katsuhiko Hayashi

Katsuhiko Hayashi 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: 10173720
    Abstract: A sensor device includes two sensor parts and an ECU. An output division of one of the two sensor parts stops output of an output signal when a detected internal abnormality is a first abnormality. Further, when the detected internal abnormality is a second abnormality that is different from the first abnormality, the output division controls an abnormality signal to take a value indicative of the second abnormality. An abnormality determiner determines either of a signal obtainment abnormality or the first abnormality of the sensor part when the output signal is not obtained from the one of the sensor parts, or determines the second abnormality of the one of the sensor parts when the obtained output signal includes the abnormality signal having a value indicative of the second abnormality. Such determination, thus, enables the abnormality determiner to classify an abnormality caused in the sensor parts.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: January 8, 2019
    Assignee: DENSO CORPORATION
    Inventors: Takaharu Kozawa, Shuji Kuramitsu, Kouichi Nakamura, Masaya Taki, Toshimitsu Sakai, Katsuhiko Hayashi
  • Patent number: 10146052
    Abstract: The present disclosure provides a virtual image display apparatus, head-up display system, and vehicle that distribute a spatially divided parallax image between a left eye and right eye of a user appropriately. The virtual image display apparatus according to the present disclosure includes a display device configured to spatially divide with a first pitch and to output right-eye images and left-eye images, first optical members periodically disposed with a second pitch, distributing light based on the output from the display device between a right-eye direction and a left-eye direction, and a second optical member configured to reflect or refract, by positive power, the light distributed between the right-eye direction and the left-eye direction by the first optical members. The first pitch is narrower than the second pitch.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: December 4, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masahiro Kasano, Kouki Ichihashi, Yosuke Asai, Katsuhiko Hayashi
  • Publication number: 20180309083
    Abstract: A planar light source emits planar light by power supplied from a mounting member. The planar light source includes an engaging part, a planar-light-emitting panel having a light-emitting surface, and a connecting unit disposed between the engaging part and the planar-light-emitting panel. The engaging part forms a portion of a power supply path for supplying power from the mounting member to the planar-light-emitting panel. The planar-light-emitting panel includes a planar-light-emitting tile and a translucent plate, where one main surface of the planar-light-emitting tile includes a light-emitting region. The planar-light-emitting panel emits, in a lighting state, the planar light from the light-emitting region of the planar-light-emitting tile through the translucent plate. An output of the planar light from the planar light source is adjusted by pressing the light-emitting surface.
    Type: Application
    Filed: October 6, 2016
    Publication date: October 25, 2018
    Inventor: Katsuhiko Hayashi
  • Publication number: 20180272693
    Abstract: The power supply unit includes a circuit substrate including a first layer that is a surface layer being conductive, a first wiring pattern formed of the first layer, a second layer that is conductive, and a second wiring pattern formed of the second layer, and first and second capacitors formed on the first layer. The first capacitor includes a first terminal and a second terminal. The second capacitor includes a third terminal and a fourth terminal. The circuit substrate includes a first electrode connecting the first terminal of the first capacitor to the first wiring pattern, a second electrode connecting the second terminal of the first capacitor to the second wiring pattern, a third electrode connecting the third terminal of the second capacitor to the second wiring pattern, and a fourth electrode connecting the fourth terminal of the second capacitor to the first wiring pattern.
    Type: Application
    Filed: March 13, 2018
    Publication date: September 27, 2018
    Inventor: Katsuhiko HAYASHI
  • Patent number: 10077069
    Abstract: A sensor device includes a main sensor, a sub sensor, and an Electronic Control Unit (ECU). The ECU has a torque calculator that sets, as a steering torque, a main steering torque that is calculated based on a main sensor signal when a main output signal is normal. During a transition period between an abnormality detection and an abnormality establishment regarding the main output signal, the torque calculator calculates the steering torque based on (i) a sub steering torque calculated based on a sub sensor signal and (ii) a prior-to-abnormality-detection main steering torque. In such manner, even when abnormality is detected in a part of the sensor signals, a fluctuation of the steering torque due to, or accompanying, the switching of the steering torque calculation to a normal signal only calculation is prevented.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: September 18, 2018
    Assignee: DENSO CORPORATION
    Inventors: Shuji Kuramitsu, Katsuhiko Hayashi, Takaharu Kozawa, Kouichi Nakamura, Masaya Taki, Toshimitsu Sakai
  • Publication number: 20180251729
    Abstract: A problem of this invention it to provide a method for differentiate a primordial germ cell into a functional GV stage oocyte by in vitro culture. This invention relates to a method for differentiating a primordial germ cell into a functional GV stage oocyte by in vitro culture, comprising: (a) a step of producing a secondary follicle by culturing the primordial germ cell and supporting cells adjacent to the primordial germ cells under conditions that eliminate the effects of estrogen or a factor having a similar function to estrogen; (b) a step of partially dissociating cells between a granulosa cell layer and a thecal cell layer, wherein an oocyte, the granulosa cell layer, and the thecal cell layer constitute the produced secondary follicle; and (c) a step of differentiating the oocyte into a functional GV stage oocyte by culturing the oocyte, the granulosa cell layer, and the thecal cell layer that constitute the secondary follicle in a medium containing a high-molecular-weight compound.
    Type: Application
    Filed: September 16, 2016
    Publication date: September 6, 2018
    Inventors: Yayoi OBATA, Yuji HIRAO, Katsuhiko HAYASHI
  • Patent number: 10053141
    Abstract: A communication system includes a sensor apparatus transmitting a sensor signal including detection information of a detection target as a digital signal and a microcomputer receiving the sensor signal through a signal line and performing a control operation at a predetermined operation cycle based on the sensor signal that is received. The microcomputer transmits, to the sensor apparatus, a synchronization signal which is synchronized with the predetermined operation cycle of the microcomputer. The sensor apparatus transmits the sensor signal at a predetermined constant cycle except when the synchronization signal transmitted by the microcomputer is received. The sensor apparatus changes a transmission timing of the sensor signal corresponding to the synchronization signal when the synchronization signal transmitted by the microcomputer is received.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: August 21, 2018
    Assignee: DENSO CORPORATION
    Inventors: Takashi Suzuki, Hideki Kabune, Katsuhiko Hayashi, Takaharu Kozawa
  • Publication number: 20180229761
    Abstract: In a rotation detecting apparatus, while a switch is in an on state so that electrical power is supplied from a power source to a controller via the switch, the controller receives, as a first output signal, an output signal output from an output unit of a first rotation sensor, and receives, as a second output signal, an output signal output from an output unit of the second rotation sensor. The first output signal includes at least the first rotational information and the second rotational information based on the first rotation sensor, and the second output signal includes at least the first rotational information and the second rotational information based on the second rotation sensor. The controller determines whether there is a malfunction in each of the first and second rotation sensors as a function of the first output signal and the second output signal.
    Type: Application
    Filed: February 8, 2018
    Publication date: August 16, 2018
    Inventors: Toshihiro Fujita, Takaharu Kozawa, Shuhei Miyachi, Katsuhiko Hayashi, Shuji Kuramitsu, Koichi Nakamura, Yuki Watanabe, Atsuko Oka, Masaya Taki, Toshimitsu Sakai
  • Patent number: 9938496
    Abstract: This invention provides a method of producing an epiblast-like cell (EpiLC) from a pluripotent stem cell, which comprises culturing the pluripotent stem cell in the presence of activin A; a method of producing a primordial germ cell-like (PGC-like) cell a pluripotent stem cell, which comprises culturing the EpiLC obtained by the method above in the presence of BMP4 and LIF. Also provided are a cell population containing PGC-like cells as obtained by the method, and reagent kits for the EpiLC- and PGC-like cell-induction from a pluripotent stem cell.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: April 10, 2018
    Assignee: KYOTO UNIVERSITY
    Inventors: Mitinori Saitou, Katsuhiko Hayashi
  • Publication number: 20180088327
    Abstract: Head-up display projects an image on transparent windshield to cause an observer to visually recognize a virtual image. Head-up display includes screen, optical system displays the image. Optical system projects the image displayed by screen on windshield. Driving unit moves screen. Optical system forms an intermediate image between optical systems, the intermediate image being larger than the image of screen.
    Type: Application
    Filed: December 4, 2017
    Publication date: March 29, 2018
    Inventors: SATOSHI KUZUHARA, MASAFUMI SUEYOSHI, HIROAKI OKAYAMA, KATSUHIKO HAYASHI
  • Patent number: 9912270
    Abstract: A motor drive device includes: a drive circuit unit having a plurality pair of switching elements and a plurality pair of free wheel diodes connected in parallel to the plurality pair of switching elements respectively; and a controller that turns on/off the switching elements. The controller performs a synchronous rectification control in which at least one pair of the switching elements is complementarily turned on/off, or performs an asynchronous rectification control in which the synchronous rectification control is not performed. The controller has a variation restriction portion that restricts a variation in current that is caused by a switch from one of the synchronous rectification control and the asynchronous rectification control to the other.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: March 6, 2018
    Assignee: DENSO CORPORATION
    Inventors: Katsuhiko Hayashi, Takashi Suzuki
  • Publication number: 20180039077
    Abstract: A head-up display projects an image on a windshield to allow a viewer to visually observe a virtual image. The head-up display includes a display device, a relay optical system, and a projection optical system. The display device displays an image. The relay optical system provides the image displayed by the display device as an intermediate image. The projection optical system reflects the intermediate image provided by the relay optical system to project the intermediate image on the windshield.
    Type: Application
    Filed: October 10, 2017
    Publication date: February 8, 2018
    Inventors: SATOSHI KUZUHARA, MASAFUMI SUEYOSHI, HIROAKI OKAYAMA, KATSUHIKO HAYASHI
  • Patent number: 9878736
    Abstract: A communication system includes at least one sensor apparatus including at least one sensing element and a transmission circuit, and a microcomputer including a reception circuit and a differential calculator. The sensing element detects a sensor value indicating a physical quantity of a detection target, and the transmission circuit transmits, as a digital signal, a sensor signal including information indicative of the sensor value at a predetermined transmission cycle. The reception circuit receives the sensor signal through a signal line and updates last time sensor value with present time sensor value. The differential calculator calculates, at a predetermined calculation cycle, a time differential value by performing a time differential calculation to the updated using time information provided separate from the sensor value.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: January 30, 2018
    Assignee: DENSO CORPORATION
    Inventors: Masaya Taki, Toshimitsu Sakai, Shuji Kuramitsu, Kouichi Nakamura, Takaharu Kozawa, Katsuhiko Hayashi
  • Publication number: 20170291640
    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: Application
    Filed: April 4, 2017
    Publication date: October 12, 2017
    Inventors: Toshihiro Fujita, Hideki Kabune, Katsuhiko Hayashi, Takaharu Kozawa, Shuhei Miyachi, Koichi Nakamura, Yuki Watanabe, Atsuko Oka, Shuji Kuramitsu, Toshimitsu Sakai, Masaya Taki
  • Patent number: 9774442
    Abstract: A communication device includes: a plurality of sensors, each of which includes at least one sensor element that detects information relating to a single detection target and an output circuit that generates an output signal based on a detection signal of the sensor element and transmits the output signal; and a controller that acquires the output signal. One of the sensors transmits the output signal to the controller at an output timing that is shifted, by a predetermined period shorter than a length of one period of the output signal, from another output timing when another one of the sensors transmits the output signal.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: September 26, 2017
    Assignee: DENSO CORPORATION
    Inventors: Takaharu Kozawa, Hideki Kabune, Toshihiro Fujita, Katsuhiko Hayashi, Kouichi Nakamura, Shuji Kuramitsu, Toshimitsu Sakai, Masaya Taki
  • Patent number: 9651792
    Abstract: The present disclosure provides an image display apparatus having excellent light converging characteristics. The image display apparatus includes: a liquid crystal prism element including a prism array in which a plurality of prisms are arranged, a liquid crystal layer laminated on the prism array, and electrodes provided at position corresponding to the respective prisms which form the prism array; a control section configured to control a voltage to be applied to each electrode; and a position detection section configured to detect a viewing position of a user. The control section is able to apply the same or different voltages to the respective electrodes provided at the positions corresponding to the respective prisms, on the basis of a result of the detection of the viewing position by the position detection section.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: May 16, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Katsuhiko Hayashi, Shuji Inoue
  • Publication number: 20170072991
    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: Application
    Filed: September 2, 2016
    Publication date: March 16, 2017
    Inventors: Katsuhiko Hayashi, Takaharu Kozawa, Shuji Kuramitsu, Kouichi Nakamura, Masaya Taki, Toshimitsu Sakai
  • Patent number: 9581859
    Abstract: An optical deflector which deflects incident light, includes an optical deflection element which deflects the incident light when a distribution of internal refraction indexes of the optical deflection element is modulated. The light incident on the optical deflection element is emitted from the optical deflection element after passing through the optical deflection element a plurality of times.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: February 28, 2017
    Assignee: PANASONIC CORPORATION
    Inventors: Shinichi Shikii, Keiji Sugiyama, Katsuhiko Hayashi
  • Publication number: 20170050670
    Abstract: A sensor device includes a main sensor, a sub sensor, and an Electronic Control Unit (ECU). The ECU has a torque calculator that sets, as a steering torque, a main steering torque that is calculated based on a main sensor signal when a main output signal is normal. During a transition period between an abnormality detection and an abnormality establishment regarding the main output signal, the torque calculator calculates the steering torque based on (i) a sub steering torque calculated based on a sub sensor signal and (ii) a prior-to-abnormality-detection main steering torque. In such manner, even when abnormality is detected in a part of the sensor signals, a fluctuation of the steering torque due to, or accompanying, the switching of the steering torque calculation to a normal signal only calculation is prevented.
    Type: Application
    Filed: August 16, 2016
    Publication date: February 23, 2017
    Inventors: Shuji Kuramitsu, Katsuhiko Hayashi, Takaharu Kozawa, Kouichi Nakamura, Masaya Taki, Toshimitsu Sakai
  • Publication number: 20170045283
    Abstract: A damper apparatus possible to suppress abnormal sounds immediately after the locking of gears has been released is provided. In a first lock mechanism of the damper apparatus, a first arcuate outer-peripheral part peripherally adjacent to a teeth-missing gear in a drive gear enters a portion of a plurality of teeth in which some teeth are narrowed in the axial direction to restrain a sector gear, the teeth being meshed with the drive gear in the sector gear. In the tooth nearest to the first arcuate outer-peripheral part in the teeth-missing gear, the curvature of a first tooth flank on the side opposite the first arcuate outer-peripheral part is less than the curvature of a second tooth flank on the first arcuate outer peripheral part side, and the tooth has a curved surface continuous from the first tooth flank to the second tooth flank.
    Type: Application
    Filed: April 22, 2015
    Publication date: February 16, 2017
    Applicant: NIDEC SANKYO CORPORATION
    Inventors: Shunji SAITO, Katsuhiko HAYASHI