Patents by Inventor Daishi Gouko

Daishi Gouko 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).

  • PWM circuit control method
    Patent number: 7313005
    Abstract: In the PWM circuit of the present invention, a PWM counter counts clock signals. A reference value setting register sets a comparative reference value for determining a duty ratio of a PWM signal. A comparator generates the PWM signals based on a comparative result of the comparative reference value and a count value of the PWM counter. A delay device delays the PWM signal. A switching device switchably outputs the output of the comparator and the output of the delay device in order of time sequence. Thereby, the pulse phase of the PWM signal can be adjusted.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: December 25, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsuji Azuma, Daishi Gouko
  • PWM circuit control method
    Publication number: 20050285582
    Abstract: In the PWM circuit of the present invention, a PWM counter counts clock signals. A reference value setting register sets a comparative reference value for determining a duty ratio of a PWM signal. A comparator generates the PWM signals based on a comparative result of the comparative reference value and a count value of the PWM counter. A delay device delays the PWM signal. A switching device switchably outputs the output of the comparator and the output of the delay device in order of time sequence. Thereby, the pulse phase of the PWM signal can be adjusted.
    Type: Application
    Filed: June 23, 2005
    Publication date: December 29, 2005
    Inventors: Katsuji Azuma, Daishi Gouko