Patents by Inventor Fimitomo Ohsawa

Fimitomo Ohsawa 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).

  • Simulation method, system and article of manufacture
    Patent number: 8670967
    Abstract: A simulation system, method, and article of manufacture. A simulation system has a discrete and a continuous portion. The discrete portion further has a peripheral emulator in communication with the continuous portion of the simulation system. A portion of a peripheral emulator is separated and is caused to operate in a thread of a continuous system. The continuous system and the peripheral are in loose synchronization and therefore sparsely communicate with each other. The configuration significantly reduces the frequency of inter-thread communications between the continuous system and the discrete system that are performed in response to a continuous clock in a simulation system including the continuous system and the discrete system, thereby reducing communication cost. Accordingly, the operation speed of the simulation system can be increased.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: March 11, 2014
    Assignee: International Business Machines Corporation
    Inventors: Hideaki Komatsu, Fimitomo Ohsawa, Shuichi Shimizu
  • SIMULATION METHOD, SYSTEM AND ARTICLE OF MANUFACTURE
    Publication number: 20120029893
    Abstract: A simulation system, method, and article of manufacture. A simulation system has a discrete and a continuous portion. The discrete portion further has a peripheral emulator in communication with the continuous portion of the simulation system. A portion of a peripheral emulator is separated and is caused to operate in a thread of a continuous system. The continuous system and the peripheral are in loose synchronization and therefore sparsely communicate with each other. The configuration significantly reduces the frequency of inter-thread communications between the continuous system and the discrete system that are performed in response to a continuous clock in a simulation system including the continuous system and the discrete system, thereby reducing communication cost. Accordingly, the operation speed of the simulation system can be increased.
    Type: Application
    Filed: March 10, 2010
    Publication date: February 2, 2012
    Applicant: International Business Machines Corporation
    Inventors: Hideaki Komatsu, Fimitomo Ohsawa, Shuichi Shimizu