Patents by Inventor Takaai Hiramatsu

Takaai Hiramatsu 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).

  • Condition variable to synchronize high level communication between processing threads
    Patent number: 6026427
    Abstract: The method and apparatus of this invention provide a condition variable that has a time-out capability for an operating system that does not have one. A condition variable allows concurrent programming and provides high level communication between threads. The condition variable allows threads to wait within a mutex and allows broadcast signals to wake up waited threads. The condition variable is implemented by using counters to count the number of waited threads, the number of signals being sent to the waited threads, and semaphore, and means for mutually locking the thread to access the counters.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: February 15, 2000
    Inventors: Kazunori Nishihara, Takaai Hiramatsu