Patents by Inventor Kenji Matabe

Kenji Matabe 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 automatically testing an extended buffer memory
    Patent number: 5416920
    Abstract: In an extended buffer memory shared among a plurality of processors and operable to carry out a data transfer operation to and from one of the plurality of processors which is logically connected to the extended buffer memory, each of a plurality of connection information indicating means indicates whether or not each of the plurality of processors is logically connected to the extended buffer memory. Test information indicating means indicates, by test information having a predetermined logic value, that one of the processors is capable of carrying out a test. The test information having the predetermined logic value is capable of setting the test information indicating means when all of the plurality of connection information indicating means indicates that all of the plurality of processors are logically disconnected from the extended buffer memory.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: May 16, 1995
    Assignee: NEC Corporations
    Inventors: Koji Saito, Kenji Matabe