Patents by Inventor Yohei Koike

Yohei Koike 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: 8565991
    Abstract: A working fluid medium temperature control system comprises an actuator operable on a working fluid medium, a pump for the working fluid medium, a fluid passage structure for the working fluid medium, an electric motor drivingly connected to the pump, and a control unit for the electric motor, the control unit including an inverter and an inverter controller. The inverter and the electric motor are integrated in such a way that the inverter is in heat transfer communication with the electric motor. The fluid passage structure is in heat transfer communication with the inverter.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: October 22, 2013
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takayuki Bitou, Koh Uchida, Katsuhiro Suda, Taisuke Ueda, Toru Inoue, Yoshikazu Takahashi, Hideyuki Kita, Yohei Koike, Nariaki Tazawa
  • Patent number: 8494183
    Abstract: A switching section causes the first amplification section to amplify the expansion left audio signal and supply the amplified expansion left audio signal to the first speaker terminal and causing the second amplification section to amplify the expansion right audio signal and supply the amplified expansion right audio signal to the second speaker terminal when the Bi-Amp function is not used. The switching section causes the first amplification section to amplify the left audio signal for Bi-Amp and supply the amplified left audio signal for Bi-Amp the first speaker terminal and causing the second amplification section to amplify the right audio signal for Bi-Amp and supply the amplified right audio signal for Bi-Amp to the second speaker terminal when the Bi-Amp function is used.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: July 23, 2013
    Assignee: Onkyo Corporation
    Inventors: Tadaharu Sunaga, Susumu Koaze, Junichi Kobayashi, Norio Etoh, Yataro Yajima, Shintaro Jo, Ayako Nakatani, Yohei Koike
  • Publication number: 20110190986
    Abstract: A working fluid medium temperature control system comprises an actuator operable on a working fluid medium, a pump for the working fluid medium, a fluid passage structure for the working fluid medium, an electric motor drivingly connected to the pump, and a control unit for the electric motor, the control unit including an inverter and an inverter controller. The inverter and the electric motor are integrated in such a way that the inverter is in heat transfer communication with the electric motor. The fluid passage structure is in heat transfer communication with the inverter.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 4, 2011
    Inventors: Takayuki Bitou, Koh Uchida, Katsuhiro Suda, Taisuke Ueda, Toru Inoue, Yoshikazu Takahashi, Hideyuki Kita, Yohei Koike, Nariaki Tazawa
  • Patent number: 7978865
    Abstract: An audio processing apparatus comprising: channel determination section for determining which one of a combination of the first left audio signal and the first right audio signal and a combination of the second left audio signal and the second right audio signal is included in multichannel audio data; and switching section for causing the first amplification section to amplify the first left audio signal and supply the amplified first left audio signal to the first speaker terminal and causing the second amplification section to amplify the first right audio signal and supply the amplified first right audio signal to the second speaker terminal when the combination of the first left audio signal and the first right audio signal is determined to be included; and causing the first amplification section to amplify the second left audio signal and supply the amplified second left audio signal to the third speaker terminal and causing the second amplification section to amplify the second right audio signal and su
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: July 12, 2011
    Assignee: Onkyo Corporation
    Inventors: Tadaharu Sunaga, Norio Etoh, Yataro Yajima, Shintaro Jo, Ayako Nakatani, Yohei Koike
  • Publication number: 20110142262
    Abstract: A switching section causes the first amplification section to amplify the expansion left audio signal and supply the amplified expansion left audio signal to the first speaker terminal and causing the second amplification section to amplify the expansion right audio signal and supply the amplified expansion right audio signal to the second speaker terminal when the Bi-Amp function is not used. The switching section causes the first amplification section to amplify the left audio signal for Bi-Amp and supply the amplified left audio signal for Bi-Amp the first speaker terminal and causing the second amplification section to amplify the right audio signal for Bi-Amp and supply the amplified right audio signal for Bi-Amp to the second speaker terminal when the Bi-Amp function is used.
    Type: Application
    Filed: February 8, 2011
    Publication date: June 16, 2011
    Inventors: Tadaharu SUNAGA, Susumu KOAZE, Junichi KOBAYASHI, Norio ETOH, Yataro YAJIMA, Shintaro JO, Ayako NAKATANI, Yohei KOIKE
  • Publication number: 20100195848
    Abstract: An audio processing apparatus comprising: channel determination section for determining which one of a combination of the first left audio signal and the first right audio signal and a combination of the second left audio signal and the second right audio signal is included in multichannel audio data; and switching section for causing the first amplification section to amplify the first left audio signal and supply the amplified first left audio signal to the first speaker terminal and causing the second amplification section to amplify the first right audio signal and supply the amplified first right audio signal to the second speaker terminal when the combination of the first left audio signal and the first right audio signal is determined to be included; and causing the first amplification section to amplify the second left audio signal and supply the amplified second left audio signal to the third speaker terminal and causing the second amplification section to amplify the second right audio signal and su
    Type: Application
    Filed: September 22, 2009
    Publication date: August 5, 2010
    Inventors: Tadaharu SUNAGA, Norio Etoh, Yataro Yajima, Shintaro Jo, Ayako Nakatani, Yohei Koike
  • Patent number: 7477036
    Abstract: In a motor-driven power steering apparatus for converting rotation of an electric motor into a linear stroke of a rack shaft by an interposition of a power transmission mechanism and steering a tire wheel connected to the rack shaft, there is provided a motor slip detecting means for previously determining a cumulative rotational speed of the electric motor corresponding to a maximum stroke displacement amount of the rack shaft, integrating the rotational speed of the electric motor, and estimating that slip or idle running is generated in a rotational force transmission system from the electric motor to the rack shaft, where the integral rotational speed of the electric motor becomes more than a prescribed cumulative rotational speed.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: January 13, 2009
    Assignee: Showa Corporation
    Inventors: Yohei Koike, Takahiro Kasuga
  • Patent number: 7080711
    Abstract: In a rack and pinion type motor-driven power steering apparatus, the motor-driven power steering apparatus is provided with a rack position detecting means for detecting a position of the rack, a rack speed arithmetically operating means for calculating a moving speed (s) of the rack, a memory means for storing a relation between a predetermined rack speed (s) near a stroke end of the rack and a motor damping control start rack position in which a distance from the stroke end is farther in accordance with the rack speed (s) as a relation curve (C) of a coordinate map A collating means is provided for collating with the relation curve (C) between the rack speed (s) stored in the memory means and the motor damping control start rack position so as to determine whether or not a point coordinate (s, p) of the combination between the rack speed (s) calculated by the rack speed arithmetically operating means and the rack position (p) detected by the rack position detecting means gets over the relation curve (C).
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: July 25, 2006
    Assignee: Showa Corporation
    Inventors: Yohei Koike, Takahiro Kasuga
  • Publication number: 20060022619
    Abstract: In a motor-driven power steering apparatus for converting rotation of an electric motor into a linear stroke of a rack shaft by an interposition of a power transmission mechanism and steering a tire wheel connected to the rack shaft, there is provided a motor slip detecting means for previously determining a cumulative rotational speed of the electric motor corresponding to a maximum stroke displacement amount of the rack shaft, integrating the rotational speed of the electric motor, and estimating that slip or idle running is generated in a rotational force transmission system from the electric motor to the rack shaft, where the integral rotational speed of the electric motor becomes more than a prescribed cumulative rotational speed.
    Type: Application
    Filed: March 7, 2005
    Publication date: February 2, 2006
    Inventors: Yohei Koike, Takahiro Kasuga
  • Publication number: 20050280389
    Abstract: In a rack and pinion type motor-driven power steering apparatus, the motor-driven power steering apparatus is provided with a rack position detecting means for detecting a position of the rack, a rack speed arithmetically operating means for calculating a moving speed (s) of the rack, a memory means for storing a relation between a predetermined rack speed (s) near a stroke end of the rack and a motor damping control start rack position in which a distance from the stroke end is farther in accordance with the rack speed (s) as a relation curve (C) of a coordinate map A collating means is provided for collating with the relation curve (C) between the rack speed (s) stored in the memory means and the motor damping control start rack position so as to determine whether or not a point coordinate (s, p) of the combination between the rack speed (s) calculated by the rack speed arithmetically operating means and the rack position (p) detected by the rack position detecting means gets over the relation curve (C).
    Type: Application
    Filed: December 15, 2004
    Publication date: December 22, 2005
    Inventors: Yohei Koike, Takahiro Kasuga