Patents by Inventor Minekazu Maruoka

Minekazu Maruoka 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).

  • Control system for input/output apparatus
    Patent number: 4327409
    Abstract: A control system for a plurality of I/O apparatuses used for transferring data between a main memory and an I/O apparatus controlling device through a channel control device. If an error occurs in the data transfer, no response signal is sent to the I/O apparatus controlling device from the channel control device and the absence of the response signal is detected by time supervision in the supervising circuit in the I/O apparatus controlling device, so that only the portion of the I/O apparatus related to the error is stopped.
    Type: Grant
    Filed: August 31, 1979
    Date of Patent: April 27, 1982
    Assignee: Fujitsu Limited
    Inventors: Minekazu Maruoka, Tatsushi Hirotani