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).
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Patent number: 8565991Abstract: 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: GrantFiled: January 31, 2011Date of Patent: October 22, 2013Assignee: Nissan Motor Co., Ltd.Inventors: Takayuki Bitou, Koh Uchida, Katsuhiro Suda, Taisuke Ueda, Toru Inoue, Yoshikazu Takahashi, Hideyuki Kita, Yohei Koike, Nariaki Tazawa
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Patent number: 8494183Abstract: 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: GrantFiled: February 8, 2011Date of Patent: July 23, 2013Assignee: Onkyo CorporationInventors: Tadaharu Sunaga, Susumu Koaze, Junichi Kobayashi, Norio Etoh, Yataro Yajima, Shintaro Jo, Ayako Nakatani, Yohei Koike
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Publication number: 20110190986Abstract: 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: ApplicationFiled: January 31, 2011Publication date: August 4, 2011Inventors: Takayuki Bitou, Koh Uchida, Katsuhiro Suda, Taisuke Ueda, Toru Inoue, Yoshikazu Takahashi, Hideyuki Kita, Yohei Koike, Nariaki Tazawa
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Patent number: 7978865Abstract: 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 suType: GrantFiled: September 22, 2009Date of Patent: July 12, 2011Assignee: Onkyo CorporationInventors: Tadaharu Sunaga, Norio Etoh, Yataro Yajima, Shintaro Jo, Ayako Nakatani, Yohei Koike
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Publication number: 20110142262Abstract: 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: ApplicationFiled: February 8, 2011Publication date: June 16, 2011Inventors: Tadaharu SUNAGA, Susumu KOAZE, Junichi KOBAYASHI, Norio ETOH, Yataro YAJIMA, Shintaro JO, Ayako NAKATANI, Yohei KOIKE
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Publication number: 20100195848Abstract: 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 suType: ApplicationFiled: September 22, 2009Publication date: August 5, 2010Inventors: Tadaharu SUNAGA, Norio Etoh, Yataro Yajima, Shintaro Jo, Ayako Nakatani, Yohei Koike
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Patent number: 7477036Abstract: 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: GrantFiled: March 7, 2005Date of Patent: January 13, 2009Assignee: Showa CorporationInventors: Yohei Koike, Takahiro Kasuga
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Patent number: 7080711Abstract: 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: GrantFiled: December 15, 2004Date of Patent: July 25, 2006Assignee: Showa CorporationInventors: Yohei Koike, Takahiro Kasuga
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Publication number: 20060022619Abstract: 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: ApplicationFiled: March 7, 2005Publication date: February 2, 2006Inventors: Yohei Koike, Takahiro Kasuga
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Publication number: 20050280389Abstract: 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: ApplicationFiled: December 15, 2004Publication date: December 22, 2005Inventors: Yohei Koike, Takahiro Kasuga