Patents by Inventor Masamitu Nomura

Masamitu Nomura 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 controlling shared data among computers
    Patent number: 5363498
    Abstract: A method of controlling data which is stored into a common storage in a multiprocessor system having a common storage which can be accessed from a plurality of computers is disclosed. Particularly, a method of controlling shared data using an extended storage as a common storage is disclosed. The copy of the data of a part of or all of a shared data set in an input/output device and the copy data control information to control the copied data are stored into the common extended storage. In the case of accessing the data in the common extended storage, the mutual exclusion among a plurality of computers and the consistency control of the data are realized by referring to the control information stored in the common extended storage.
    Type: Grant
    Filed: February 4, 1991
    Date of Patent: November 8, 1994
    Assignees: Hitachi, Ltd., Hitachi Seibu Soft Ware Co., Ltd., Hitachi Software Engineering Co., Ltd.
    Inventors: Taketoshi Sakuraba, Toshiaki Arai, Nobuo Yamamoto, Masamitu Nomura, Kazuo Imai, Michio Tandai, Toru Yamamoto