Patents by Inventor Mikihiro KUMON

Mikihiro KUMON 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).

  • Complex power management device and communication device
    Patent number: 9203313
    Abstract: A complex power management device includes DC/DC converters and a common reference line connected in common to the DC/DC converters. Each of the DC/DC converters includes a first switch element and inductor connected in series between first and second nodes, a second switch element, one end of which is connected to a third node that is a connection point of the first switch element and the inductor and the other end of which is connected to the corresponding ground terminal, and an output voltage adjustment circuit, which exclusively controls an ON/OFF state of the first and second switch elements based on a voltage of a fourth node that is the other end of the second switch element. The common reference line is connected to a fifth node that is provided on a wire connecting the second switch element of each of the DC/DC converters to the ground terminal.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: December 1, 2015
    Assignee: TDK CORPORATION
    Inventors: Toshiyuki Abe, Hironori Chiba, Mikihiro Kumon, Hiroshi Tuji
  • COMPLEX POWER MANAGEMENT DEVICE AND COMMUNICATION DEVICE
    Publication number: 20140333274
    Abstract: A complex power management device includes DC/DC converters and a common reference line connected in common to the DC/DC converters. Each of the DC/DC converters includes a first switch element and inductor connected in series between first and second nodes, a second switch element, one end of which is connected to a third node that is a connection point of the first switch element and the inductor and the other end of which is connected to the corresponding ground terminal, and an output voltage adjustment circuit, which exclusively controls an ON/OFF state of the first and second switch elements based on a voltage of a fourth node that is the other end of the second switch element. The common reference line is connected to a fifth node that is provided on a wire connecting the second switch element of each of the DC/DC converters to the ground terminal.
    Type: Application
    Filed: May 8, 2014
    Publication date: November 13, 2014
    Applicant: TDK CORPORATION
    Inventors: Toshiyuki ABE, Hironori CHIBA, Mikihiro KUMON, Hiroshi TUJI