Patents by Inventor Tomoo Shirota

Tomoo Shirota 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).

  • Access control method and computer system
    Patent number: 8301845
    Abstract: An access control method for a computer system in which a plurality of clusters share a storage unit, includes predefining an access instruction with exclusive right in addition to an access instruction that is issued with respect to the storage unit from the plurality of clusters, and monitoring, in the storage unit, based on the access instruction with exclusive right transferred from an arbitrary cluster, an access state of an other cluster and executing access instructions with exclusion if a region accessed by an access instruction from the other cluster overlaps a region accessed by the access instruction with exclusive right.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: October 30, 2012
    Assignee: Fujitsu Limited
    Inventor: Tomoo Shirota
  • Access control and computer system
    Publication number: 20100082908
    Abstract: An access control method for a computer system in which a plurality of clusters share a storage unit, includes predefining an access instruction with exclusive right in addition to an access instruction that is issued with respect to the storage unit from the plurality of clusters, and monitoring, in the storage unit, based on the access instruction with exclusive right transferred from an arbitrary cluster, an access state of an other cluster and executing access instructions with exclusion if a region accessed by an access instruction from the other cluster overlaps a region accessed by the access instruction with exclusive right.
    Type: Application
    Filed: July 31, 2009
    Publication date: April 1, 2010
    Applicant: Fujitsu Limited
    Inventor: Tomoo Shirota
  • Firmware Update Method And Update Program
    Publication number: 20080163190
    Abstract: In a storage device including a processor, the validity of data, which is stored in the storage device and does not include firmware used by the processor, is verified, and the firmware is updated while backing up the data, the validity of which is verified, with a battery connected to the storage device.
    Type: Application
    Filed: September 28, 2007
    Publication date: July 3, 2008
    Applicant: Fujitsu Limited
    Inventors: Tomoo Shirota, Teruo Satou