Patents by Inventor Shin-ichiro Mochizuki

Shin-ichiro Mochizuki 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).

  • Loosely coupled compound computer system using lock and semaphore mechanism for performing exclusive control of shared resource which is accessed through a distinct bus
    Patent number: 5592673
    Abstract: Exclusive control using a semaphore mechanism of a specific computer is executed, and P and V operation instructions for the semaphore mechanism are issued according to a use request and use end information of a shared resource from another computer or the specific computer. Whether or not enabling information for the use request is informed to a use request source computer is determined according to the value of a semaphore variable. For this reason, even when a use of the shared resource is not enabled, enabling information is merely not sent back to another computer or the specific computer as the request source computer, and a lock server mechanism can be prevented from being set in an execution waiting state according to the unsuccessful P operation instruction.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: January 7, 1997
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroaki Kurabayashi, Shin-ichiro Mochizuki