Patents by Inventor Junichi Iguma

Junichi Iguma 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).

  • Priority control apparatus for a bus in a bus control system having input/output devices
    Patent number: 4583160
    Abstract: A bus control system in which priority for the use of a bus is set in the order of an I/O device, a hardware operation unit and a data processing unit so that the use of the bus by the data processing unit is suppressed during the continuous processing operation of the hardware operation unit in order to allow high speed processing of the hardware operation unit and to allow interruption by the I/O device to permit the use of bus with higher priority without stopping the processing of the higher priority I/O device.
    Type: Grant
    Filed: March 8, 1985
    Date of Patent: April 15, 1986
    Assignee: Hitachi, Ltd.
    Inventor: Junichi Iguma