Patents by Inventor Norikazu Ohsaki

Norikazu Ohsaki 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).

  • Inverter control device and method with multiple switching circuit control methods
    Patent number: 8564972
    Abstract: An inverter control device drives one of the two switching circuits with a fixed conduction width and changes the control method of the other switching circuit between pulse-width modulation, phase control method, and drive signal width control method by phase control method according to an output state, to implement highly accurate control at low output while suppressing heat generation of a switching element.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: October 22, 2013
    Assignee: Panasonic Corporation
    Inventors: Norikazu Ohsaki, Yoshiaki Tanaka, Yoshiyuki Tabata
  • INVERTER CONTROL DEVICE AND INVERTER CONTROL METHOD
    Publication number: 20120120687
    Abstract: An inverter control device drives one of the two switching circuits with a fixed conduction width and changes the control method of the other switching circuit between pulse-width modulation, phase control method, and drive signal width control method by phase control method according to an output state, to implement highly accurate control at low output while suppressing heat generation of a switching element.
    Type: Application
    Filed: May 24, 2010
    Publication date: May 17, 2012
    Applicant: Panasonic Corporation
    Inventors: Norikazu Ohsaki, Yoshiaki Tanaka, Yoshiyuki Tabata