Patents by Inventor Hirotaka Kotsuji

Hirotaka Kotsuji 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: 7012818
    Abstract: In a switching power supply device, the operating voltage is supplied to the power-factor improvement control circuit when the switching power supply device is operating under normal operating load. Thereby, the booster chopper circuit is controlled by the power-factor improvement control circuit so as to improve the power factor of the device. By contrast, during the non-oscillation period while the switching control circuit is in the intermittent oscillation mode when the power consumption is small, the voltage induced in the auxiliary winding drops. Accordingly, the voltage of the auxiliary power supply also drops. Furthermore, when the driving voltage to be supplied to the power-factor improvement control circuit is reduced below the operating voltage thereof by the voltage reduction circuit, the power-factor improvement control circuit stops functioning, thereby reducing power consumption accordingly.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: March 14, 2006
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hirotaka Kotsuji, Saburou Kitano
  • Publication number: 20060020216
    Abstract: A portable-type health management terminal 100 provided with a communication function and a management device 200 installed in a health management center are connected via a communication network N, wherein the health management terminal 100 is provided with a sensing unit that can sense medical information or an input device into which information about a state of health can be input, wherein the state of health is identified based on the information obtained from the sensing unit or the input device, and wherein these pieces of information are stored in a storage device, and are transmitted to the management device 200 through a communication module. The management device 200 stores the information that is received in a storage device 210, and manages the change in an individual's state of health based on the information that is stored.
    Type: Application
    Filed: July 19, 2005
    Publication date: January 26, 2006
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Yoshihiro Oishi, Hirotaka Kotsuji, Shinichi Higuchi, Fumihiko Aoki
  • Publication number: 20040141339
    Abstract: In a switching power supply device, the operating voltage is supplied to the power-factor improvement control circuit when the switching power supply device is operating under normal operating load. Thereby, the booster chopper circuit is controlled by the power-factor improvement control circuit so as to improve the power factor of the device. By contrast, during the non-oscillation period while the switching control circuit is in the intermittent oscillation mode when the power consumption is small, the voltage induced in the auxiliary winding drops. Accordingly, the voltage of the auxiliary power supply also drops. Furthermore, when the driving voltage to be supplied to the power-factor improvement control circuit is reduced below the operating voltage thereof by the voltage reduction circuit, the power-factor improvement control circuit stops functioning, thereby reducing power consumption accordingly.
    Type: Application
    Filed: December 29, 2003
    Publication date: July 22, 2004
    Inventors: Hirotaka Kotsuji, Saburou Kitano