Patents by Inventor Takahiro Yoshikawa

Takahiro Yoshikawa 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: 10811554
    Abstract: A high detectivity infrared photodetector is provided. An infrared photodetector 10 includes n-type semiconductor layers 3 and 5 and a photoelectric conversion layer 4. The photoelectric conversion layer 4 includes quantum dots 411, a barrier layer 42, and a single-sided barrier layer 43. The single-sided barrier layer 43 is inserted between the barrier layer 42 and the n-type semiconductor layer 5 and has a wider band gap than does the barrier layer 42. Letting y be an energy level difference between the bottom of the conduction band of the single-sided barrier layer 43 and the bottom of the conduction band of the n-type semiconductor layer 5, z be a voltage in volts applied to the photoelectric conversion layer 4, and d be a thickness in nanometers of the photoelectric conversion layer 4, the infrared photodetector 10 satisfies y?27×exp(0.64×z/(d×10000)).
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: October 20, 2020
    Assignees: SHARP KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYO
    Inventors: Hirofumi Yoshikawa, Takahiro Doe, Yasuhiko Arakawa
  • Patent number: 10810786
    Abstract: A three-dimensional data creation method includes: creating first three-dimensional data from information detected by a sensor; receiving encoded three-dimensional data that is obtained by encoding second three-dimensional data; decoding the received encoded three-dimensional data to obtain the second three-dimensional data; and merging the first three-dimensional data with the second three-dimensional data to create third three-dimensional data.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: October 20, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Toru Matsunobu, Takahiro Nishi, Tadamasa Toma, Toshiyasu Sugio, Satoshi Yoshikawa, Tatsuya Koyama
  • Patent number: 10793139
    Abstract: A control apparatus is provided for a vehicle that includes (i) an engine serving as a drive power source, (ii) a motor/generator serving as the drive power source and (iii) a mechanically-operated transmission mechanism that constitutes a part of a power transmitting path between the drive power source and drive wheels of the vehicle. The control apparatus includes a shift control portion is configured, when an input torque inputted to the mechanically-operated transmission mechanism is to be controlled in process of a coasting shift-down action executed in the mechanically-operated transmission mechanism, to determine an upper limit value of the input torque inputted to the mechanically-operated transmission mechanism in the process of the coasting shift-down action, such that the determined upper limit value is lower during operation of the engine than during stop of the engine.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: October 6, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Jun Goto, Kenta Kumazaki, Kazuyuki Shiiba, Tooru Matsubara, Masato Yoshikawa, Takahiro Kimura
  • Publication number: 20200301207
    Abstract: An optical member is disclosed that can achieve a liquid crystal display apparatus having excellent durability and having a high color rendering property. An optical member according to the present invention includes, in the stated order: a first barrier layer; a wavelength conversion layer; and a second barrier layer. The wavelength conversion layer includes a matrix and a wavelength conversion material dispersed in the matrix. An emission spectrum of light to be extracted from the optical member has a peak having an intensity Gp in a wavelength band of from 515 nm to 550 nm, and a peak having an intensity Rp in a wavelength band of from 605 nm to 650 nm, and an average value Ave of intensities in a wavelength band of from 570 nm to 600 nm in the emission spectrum and an average value of Gp and Rp satisfy the following expression (1): Ave?0.1×{(Gp+Rp)/2}??(1).
    Type: Application
    Filed: March 15, 2017
    Publication date: September 24, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takahiro Yoshikawa, Kozo Nakamura, Kazuhito Hosokawa
  • Publication number: 20200258298
    Abstract: A display method is a display method performed by a display device that operates in conjunction with a mobile object, and includes: determining which one of first surrounding information, which is video showing a surrounding condition of the mobile object and is generated using two-dimensional information, and second surrounding information, which is video showing the surrounding condition of the mobile object and is generated using three-dimensional data, is to be displayed, based on a driving condition of the mobile object; and displaying the one of the first surrounding information and the second surrounding information that is determined to be displayed.
    Type: Application
    Filed: April 28, 2020
    Publication date: August 13, 2020
    Inventors: Tatsuya KOYAMA, Takahiro NISHI, Toshiyasu SUGIO, Tadamasa TOMA, Satoshi YOSHIKAWA, Toru MATSUNOBU
  • Publication number: 20200236364
    Abstract: A video encoding method of performing scalable encoding on input video includes: determining a total number of layers of the scalable encoding to be less than or equal to a maximum layer count determined according to a frame rate; and performing the scalable encoding on the input video to generate a bitstream, using the determined total number of layers.
    Type: Application
    Filed: April 8, 2020
    Publication date: July 23, 2020
    Inventors: Kengo TERADA, Takahiro NISHI, Hisao SASAI, Satoshi YOSHIKAWA
  • Patent number: 10719984
    Abstract: A display method is a display method performed by a display device that operates in conjunction with a mobile object, and includes: determining which one of first surrounding information, which is video showing a surrounding condition of the mobile object and is generated using two-dimensional information, and second surrounding information, which is video showing the surrounding condition of the mobile object and is generated using three-dimensional data, is to be displayed, based on a driving condition of the mobile object; and displaying the one of the first surrounding information and the second surrounding information that is determined to be displayed.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: July 21, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Tatsuya Koyama, Takahiro Nishi, Toshiyasu Sugio, Tadamasa Toma, Satoshi Yoshikawa, Toru Matsunobu
  • Publication number: 20200226794
    Abstract: A three-dimensional data creation method in a client device includes: creating three-dimensional data of a surrounding area of the client device using sensor information that is obtained through a sensor equipped in the client device and indicates a surrounding condition of the client device; estimating a self-location of the client device using the three-dimensional data created; and transmitting the sensor information obtained to a server or an other client device.
    Type: Application
    Filed: March 24, 2020
    Publication date: July 16, 2020
    Inventors: Toshiyasu SUGIO, Takahiro NISHI, Tadamasa TOMA, Toru MATSUNOBU, Satoshi YOSHIKAWA, Tatsuya KOYAMA
  • Publication number: 20200216364
    Abstract: An oriented ceramic sintered body production method includes (a) a step of preparing a ceramic compact before firing into an oriented ceramic sintered body; and (b) a step of obtaining an oriented ceramic sintered body by sandwiching the ceramic compact between a pair of releasing sheets, placing the ceramic compact and the releasing sheets in a hot press firing furnace, and hot press firing the ceramic compact while applying a pressure by a pair of punches through the pair of releasing sheets, wherein each of the releasing sheets is a releasing sheet such that, after the releasing sheet is sandwiched between PET films, is then placed and vacuum-packed on a stainless steel sheet, and is isostatically pressed at 200 kg/cm2, a surface of the releasing sheet on the side opposite from the stainless steel sheet has a profile curve with a maximum profile height Pt of 0.8 ?m or less.
    Type: Application
    Filed: March 13, 2020
    Publication date: July 9, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Morimichi WATANABE, Kei SATO, Kiyoshi MATSUSHIMA, Takahiro MAEDA, Jun YOSHIKAWA, Tsutomu NANATAKI
  • Patent number: 10676091
    Abstract: A control apparatus for a vehicle includes a vehicle driving control portion configured to permit reverse driving of the vehicle in a reverse direction while the automatic transmission is placed in a forward-drive low-speed gear position, with the motor/generator being operated in a negative direction to generate a negative torque, and a transmission shifting control portion configured to implement a control for promotion to establish the forward-drive low-speed gear position, when switching from forward driving of the vehicle to its reverse driving of the vehicle is required in the process of a shifting action of the automatic transmission to the forward-drive low-speed gear position. The transmission shifting control portion implements the control for promotion to establish the forward-drive low-speed gear position, according to a state of control of the engaging-side coupling device to be brought into its engaged state for establishing the forward-drive low-speed gear position.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: June 9, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Hisashi Ishihara, Takahiro Kimura, Masato Yoshikawa, Nobufusa Kobayashi, Kenta Kumazaki, Kazuomi Okasaka, Atsushi Kayukawa, Daisuke Suyama, Mitsuru Maeda
  • Patent number: 10679406
    Abstract: A display method is a display method performed by a display device that operates in conjunction with a mobile object, and includes: determining which one of first surrounding information, which is video showing a surrounding condition of the mobile object and is generated using two-dimensional information, and second surrounding information, which is video showing the surrounding condition of the mobile object and is generated using three-dimensional data, is to be displayed, based on a driving condition of the mobile object; and displaying the one of the first surrounding information and the second surrounding information that is determined to be displayed.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: June 9, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Tatsuya Koyama, Takahiro Nishi, Toshiyasu Sugio, Tadamasa Toma, Satoshi Yoshikawa, Toru Matsunobu
  • Patent number: 10681380
    Abstract: The image encoding method includes: encoding an image including a block by performing, in at least one of intra prediction, inter prediction, and an in-loop filter, a non-linear process by which the input-output relationship becomes non-linear; and encoding an operation parameter of a non-linear filter to be used in the non-linear process.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: June 9, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kengo Terada, Takahiro Nishi, Tadamasa Toma, Satoshi Yoshikawa
  • Patent number: 10661781
    Abstract: A vehicle control apparatus includes: a state determining portion configured to determine whether an engine is in a first operational state corresponding to a normal operation state or a second operational state corresponding to an engine stop state in which the engine is stopped and/or a catalyst warming-up state in which the engine is operated to warm up a catalyst; and a shift control portion configured, in process of a shifting action of a transmission mechanism, to control at least an engaging pressure of an engaging coupling device as one of a plurality of coupling devices of the transmission mechanism, which is to be placed in an engaged state upon completion of the shifting action, such that the engaging pressure of the engaging coupling device is controlled to be lower when the engine is in the second operational state, than when the engine is in the first operational state.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: May 26, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koji Sugiyama, Shinichi Sasade, Kazuyuki Shiiba, Tooru Matsubara, Masato Yoshikawa, Takahiro Kimura
  • Patent number: 10655030
    Abstract: The present invention relates to a water-based ink including a pigment, a water-insoluble polymer, an organic solvent and a surfactant, in which the organic solvent includes at least a glycol ether which has a viscosity of from 2.0 to 7.0 mPa·s and a vapor pressure from 0.01 to 7.0 hPa as measured at 20° C., and a content of a glycol ether having a viscosity of not less than 6.0 mPa·s as measured at 20° C. as a component of the glycol ether in the water-based ink is from 0 to 5% by mass; the surfactant includes a silicone-based surfactant and a content of the silicone-based surfactant in the water-based ink is from 0.005 to 0.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: May 19, 2020
    Assignee: KAO CORPORATION
    Inventors: Hirotaka Takeno, Yuki Wakabayashi, Kaname Mitsuyoshi, Takahiro Yoshikawa
  • Patent number: 10652547
    Abstract: A video encoding method of performing scalable encoding on input video includes: determining a total number of layers of the scalable encoding to be less than or equal to a maximum layer count determined according to a frame rate; and performing the scalable encoding on the input video to generate a bitstream, using the determined total number of layers.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: May 12, 2020
    Assignee: SUN PATENT TRUST
    Inventors: Kengo Terada, Takahiro Nishi, Hisao Sasai, Satoshi Yoshikawa
  • Publication number: 20200116921
    Abstract: The present invention provides an optical sheet for a light guide plate type liquid crystal display, including a low refractive index layer having an extremely low refractive index. The optical sheet A12 for a light guide plate type liquid crystal display (1000) according to the present invention includes a first optical film (light guide plate) (1010), a low refractive index layer (20), and a second optical film (reflection plate) (1020) laminated in this order, and the low refractive index layer (20) has a refractive index of 1.25 or less.
    Type: Application
    Filed: January 30, 2018
    Publication date: April 16, 2020
    Applicant: NITTO DENKO CORPORATION
    Inventors: Daisuke Hattori, Kozo Nakamura, Takahiro Yoshikawa
  • Patent number: 10597021
    Abstract: A control apparatus for a vehicle includes a control portion configured to control an input torque to an automatic transmission such that a value representing a rotating state of an input rotary member of the automatic transmission coincides with a target value; a racing determining portion configured to determine whether a rotating speed of an engine is predicted to exceed a predetermined rotating speed when control is provided such that the value representing the rotating state of the input rotary member of the automatic transmission coincides with the target value during a power-on shift-down action of the automatic transmission; and an output limiting portion configured to limit the output torque of the engine to a predetermined torque or less if the rotating speed of the engine is predicted to exceed the predetermined rotating speed during the power-on shift-down action of the automatic transmission.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: March 24, 2020
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Munehiro Katsumata, Hiromichi Kimura, Kazuyuki Shiiba, Tooru Matsubara, Takeshi Kitahata, Kenta Kumazaki, Nobufusa Kobayashi, Masato Yoshikawa, Takahiro Kimura, Daisuke Suyama, Kazuomi Okasaka
  • Patent number: 10583825
    Abstract: A control apparatus for a hybrid vehicle, having an engine, an electric motor, and an automatic transmission which is placed in a selected speed position with engagement of selected at least one of coupling devices, includes: an input torque control portion controlling the electric motor for controlling an input torque transmitted to the automatic transmission during a shifting action of the automatic transmission, based on output torque of the engine and torque transmitted through the coupling devices, such that a value representing a rotating state of an automatic transmission input rotary member coincides with a target value. The input torque control portion controls the input torque to be not smaller than a predetermined lower limit, when a running state of the hybrid vehicle is switched from a power-on state to a power-off state during a shift-down action of the automatic transmission in the power-on state.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: March 10, 2020
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Munehiro Katsumata, Hiromichi Kimura, Kazuyuki Shiiba, Tooru Matsubara, Takeshi Kitahata, Kenta Kumazaki, Nobufusa Kobayashi, Masato Yoshikawa, Takahiro Kimura, Daisuke Suyama, Kazuomi Okasaka
  • Publication number: 20200058468
    Abstract: An antenna according to an aspect includes: a dielectric window having a first surface and a second surface, the second surface having an annular recessed surface and a flat surface surrounded by the recessed surface; a slot plate; a dielectric plate; a heat transfer member made of metal and having an upper surface and a lower surface opposing each other; a cooling jacket; and a heater, in which the upper surface includes a plurality of first regions and a second region, the cooling jacket is mounted on the plurality of first regions, the second region is recessed further toward the lower surface side than the plurality of first regions, the heater is mounted on the second region, and each of the plurality of first regions is provided at a position at least partially overlapping with the flat surface when viewed in a direction parallel to a central axis.
    Type: Application
    Filed: January 4, 2018
    Publication date: February 20, 2020
    Applicant: Tokyo Electron Limited
    Inventors: Kazuki TAKAHASHI, Yuki KAWADA, Naoki MATSUMOTO, Takahiro SENDA, Koji KOYAMA, Shohei FUKANO, Jun YOSHIKAWA, Hiroyuki KONDO, Takashi MINAKAWA
  • Patent number: 10543831
    Abstract: A control apparatus for a vehicle provided with a motor/generator functioning as a drive power source, and a mechanically operated transmission mechanism which constitutes a part of a power transmitting path between the motor/generator and drive wheels, the control apparatus including a motor/generator control portion configured to implement a regenerative torque control of the motor/generator so as to generate a regenerative torque according to a braking operation by an operator of the vehicle in a decelerating run of the vehicle, and a transmission shifting control portion configured to initiate a shift-down action of the mechanically operated transmission mechanism after a rate of change of the regenerative torque has been held within a predetermined range for at least a predetermined length of time, where a determination to implement the shift-down action is made in the process of the regenerative torque control of the motor/generator according to the braking operation.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: January 28, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenta Kumazaki, Hiromichi Kimura, Kazuyuki Shiiba, Tooru Matsubara, Takeshi Kitahata, Nobufusa Kobayashi, Masato Yoshikawa, Masayuki Baba, Shun Sato, Takahiro Kawaguchi