Patents by Inventor Akiko Ootoshi

Akiko Ootoshi 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).

  • Clock supply method and information processing apparatus
    Patent number: 8140918
    Abstract: A clock supply method for supplying a clock to a plurality of processing units includes supplying a clock from a first clock supply unit to processing units forming a first group as a primary clock and to processing units forming a second group as a standby clock; supplying a clock from a second clock supply unit including a clock source different from that of the first clock supply unit to the processing units forming the second group as a primary clock and to the processing units forming the first group as a standby clock; and when a processing unit in the first or second group detects an abnormality of the primary clock, switching the standby clock into use in place of the primary clock being supplied to the processing units that has detected the abnormality belongs; wherein the first and second clock supply units supply clocks with the same frequency.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: March 20, 2012
    Assignee: Fujitsu Limited
    Inventors: Hideharu Kanaya, Akiko Ootoshi, Takashi Koguchi, Kensuke Ishida
  • CLOCK SUPPLY METHOD AND INFORMATION PROCESSING APPARATUS
    Publication number: 20100229034
    Abstract: A clock supply method for supplying a clock to a plurality of processing units includes supplying a clock from a first clock supply unit to processing units forming a first group as a primary clock and to processing units forming a second group as a standby clock; supplying a clock from a second clock supply unit including a clock source different from that of the first clock supply unit to the processing units forming the second group as a primary clock and to the processing units forming the first group as a standby clock; and when a processing unit in the first or second group detects an abnormality of the primary clock, switching the standby clock into use in place of the primary clock being supplied to the processing units that has detected the abnormality belongs; wherein the first and second clock supply units supply clocks with the same frequency.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 9, 2010
    Applicant: Fujitsu Limited
    Inventors: Hideharu KANAYA, Akiko Ootoshi, Takashi Koguchi, Kensuke Ishida