Patents by Inventor Yukihisa Taike

Yukihisa Taike 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).

  • Electronic device
    Patent number: 7531995
    Abstract: An electronic device includes: a DC power source which supplies a first DC supply voltage; a DC voltage converter which is enabled or disabled in response to a first control signal, and which converts the first DC supply voltage into a second DC supply voltage different from the first DC supply voltage, when the DC voltage converter is enabled; a switch which selects and supplies either the first DC supply voltage or the second DC supply voltage as an output in response to a second control signal; a DC voltage regulator which is enabled or disabled in response to a third control signal, and which converts the DC supply voltage selected by the switch into a third supply voltage lower than the selected DC supply voltage when said DC voltage regulator is enabled; a control unit which provides the second control signal to the switch; and a loading which utilizes the third DC supply voltage.
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: May 12, 2009
    Assignee: Fujitsu Limited
    Inventors: Yasushi Hara, Akira Shiba, Yukihisa Taike
  • Electronic device
    Publication number: 20080054862
    Abstract: An electronic device includes: a DC power source which supplies a first DC supply voltage; a DC voltage converter which is enabled or disabled in response to a first control signal, and which converts the first DC supply voltage into a second DC supply voltage different from the first DC supply voltage, when the DC voltage converter is enabled; a switch which selects and supplies either the first DC supply voltage or the second DC supply voltage as an output in response to a second control signal; a DC voltage regulator which is enabled or disabled in response to a third control signal, and which converts the DC supply voltage selected by the switch into a third supply voltage lower than the selected DC supply voltage when said DC voltage regulator is enabled; a control unit which provides the second control signal to the switch; and a loading which utilizes the third DC supply voltage.
    Type: Application
    Filed: August 15, 2007
    Publication date: March 6, 2008
    Applicant: Fujitsu Limited
    Inventors: Yasushi Hara, Akira Shiba, Yukihisa Taike