Patents by Inventor Tosimasa Suga

Tosimasa Suga 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).

  • Virtual computer diagnostic system with comparative monitoring of timestamped controller check signals and timestamped commands of individual virtual machines
    Patent number: 4811276
    Abstract: Operating systems of virtual machines periodically issue diagnostic instructions during the normal operation. A virtual machine control monitor selects the earliest one of monitoring times for virtual machines and sets it in the clock facility in a bare machine. If the monitor receives the diagnostic command from a virtual machine before expiration of the monitoring time, it re-sets the clock facility. Otherwise, the monitor issues a machine check interrupt command to the virtual machine in which the monitoring time has expired.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: March 7, 1989
    Assignee: Hitachi, Ltd.
    Inventor: Tosimasa Suga