Patents by Inventor Kunikazu Kawashima

Kunikazu Kawashima 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 tightly-coupled multiprocessing units
    Patent number: 4663709
    Abstract: A control system for serializing reference/update operations on shared data stored in a main storage between a plurality of tightly coupled multiprocessing units. Under multiprocessing with a mechanism for serialized use of shared resources by locking operations, the system allows any desired processing unit to be disabled at any desired time on condition that the processing of the entire multiprocessing be continued without interruption, whichever processing unit may be performing whatever processing.
    Type: Grant
    Filed: October 4, 1984
    Date of Patent: May 5, 1987
    Assignee: NEC Corporation
    Inventors: Ichinori Fujiwara, Kunikazu Kawashima, Takashi Tobe, deceased