Patents by Inventor Kohsei Goto

Kohsei Goto 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).

  • Current sensor using mirror MOSFET and PWM inverter incorporating the same
    Patent number: 7138778
    Abstract: A current sensor has a power MOSFET Q1, connected between an electric load and a power supply, for controlling current that flows through said electric load, a mirror MOSFET Q2, connected in parallel to said power MOSFET Q1, in which a portion of the current flowing through said power MOSFET flows, and a current detection resistor RC connected between a source electrode of said power MOSFET and a source electrode of said mirror MOSFET. An inverting amplifier circuit CP of the current sensor 3 inverts and amplifies the voltage signal, which has been converted to voltage by the current detection resistor RC, and outputs the signal, thereby converting positive and negative voltages generated across the current detection resistor RC to a positive voltage.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: November 21, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Shinichi Fujino, Junichi Sakano, Toshiyuki Innami, Kohsei Goto
  • Current sensor using mirror MOSFET and PWM inverter incorporating the same
    Patent number: 7112935
    Abstract: A current sensor has a power MOSFET Q1, connected between an electric load and a power supply, for controlling current that flows through said electric load, a mirror MOSFET Q2, connected in parallel to said power MOSFET Q1, in which a portion of the current flowing through said power MOSFET flows, and a current detection resistor RC connected between a source electrode of said power MOSFET and a source electrode of said mirror MOSFET. An inverting amplifier circuit CP of the current sensor 3 inverts and amplifies the voltage signal, which has been converted to voltage by the current detection resistor RC, and outputs the signal, thereby converting positive and negative voltages generated across the current detection resistor RC to a positive voltage.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: September 26, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Shinichi Fujino, Junichi Sakano, Toshiyuki Innami, Kohsei Goto
  • Current sensor using mirror MOSFET and PWM inverter incorporating the same
    Publication number: 20060038523
    Abstract: A current sensor has a power MOSFET Q1, connected between an electric load and a power supply, for controlling current that flows through said electric load, a mirror MOSFET Q2, connected in parallel to said power MOSFET Q1, in which a portion of the current flowing through said power MOSFET flows, and a current detection resistor RC connected between a source electrode of said power MOSFET and a source electrode of said mirror MOSFET. An inverting amplifier circuit CP of the current sensor 3 inverts and amplifies the voltage signal, which has been converted to voltage by the current detection resistor RC, and outputs the signal, thereby converting positive and negative voltages generated across the current detection resistor RC to a positive voltage.
    Type: Application
    Filed: October 18, 2005
    Publication date: February 23, 2006
    Applicant: HITACHI, LTD.
    Inventors: Shinichi Fujino, Junichi Sakano, Toshiyuki Innami, Kohsei Goto
  • Plasma display panel
    Publication number: 20040178809
    Abstract: A current sensor has a power MOSFET Q1, connected between an electric load and a power supply, for controlling current that flows through said electric load, a mirror MOSFET Q2, connected in parallel to said power MOSFET Q1, in which a portion of the current flowing through said power MOSFET flows, and a current detection resistor RC connected between a source electrode of said power MOSFET and a source electrode of said mirror MOSFET. An inverting amplifier circuit CP of the current sensor 3 inverts and amplifies the voltage signal, which has been converted to voltage by the current detection resistor RC, and outputs the signal, thereby converting positive and nega tive voltages generated across the current detection resistor RC to a positive voltage.
    Type: Application
    Filed: December 18, 2003
    Publication date: September 16, 2004
    Inventors: Shinichi Fujino, Junichi Sakano, Toshiyuki Innami, Kohsei Goto