Patents by Inventor Kazuhiro Hyuga

Kazuhiro Hyuga 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).

  • Method of and system for verifying operation concurrence in maintenance/replacement of twin CPUs
    Patent number: 5737513
    Abstract: A method of verifying operation concurrence in maintenance/replacement of twin CPUs employed in a dual-CPU computer wherein a replacement CPU with an initial fault may have been installed by mistake during on-line maintenance/replacement work and a system therefor are disclosed whereby a failure which, without the method and the system, would occur due to the initial fault of the replacement CPU during a dual subsystem synchronous operation carried out thereafter by the computer can be prevented from entailing a system down on both the subsystems.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: April 7, 1998
    Assignees: Hitachi, Ltd., Hitachi Information & Control Systems Inc.
    Inventors: Koji Matsuda, Yoshihiro Miyazaki, Soichi Takaya, Kazuhiro Hyuga, Nobuo Akeura, Shinichiro Yamaguchi, Naoto Miyazaki, Satoru Kayukawa