Patents by Inventor Minoru Shibamiya

Minoru Shibamiya 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 method and apparatus for dynamically switching a logical session
    Patent number: 5721817
    Abstract: A control method and apparatus for dynamically switching a logical session in an information processing system having a network control system configuration in which a plurality of terminal devices are connected to a plurality of central processing units via at least one communication control processor.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: February 24, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Jun'ichi Kurihara, Toshio Hirosawa, Minoru Shibamiya
  • System for dynamically switching logical sessions between terminal device and a processor which stops its operation to another working processor under control of communication control processor
    Patent number: 5499342
    Abstract: A control method and apparatus for dynamically switching a logical session in an information processing system having a network control system configuration in which a plurality of terminal devices are connected to a plurality of central processing units via at least one communication control processor.
    Type: Grant
    Filed: May 1, 1992
    Date of Patent: March 12, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Jun'ichi Kurihara, Toshio Hirosawa, Minoru Shibamiya
  • Network control system for dynamically switching a logical connection between an identified terminal device and an indicated processing unit
    Patent number: 5121486
    Abstract: A control method and apparatus for dynamically switching a logical session in an information processing system having a network control system configuration in which a plurality of terminal devices are connected to a plurality of processing units via at least one communication control processer.
    Type: Grant
    Filed: November 18, 1988
    Date of Patent: June 9, 1992
    Assignee: Hitachi, Ltd
    Inventors: Jun'ichi Kurihara, Toshio Hirosawa, Minoru Shibamiya
  • Virtual storage system and method permitting setting of the boundary between a common area and a private area at a page boundary
    Patent number: 4991082
    Abstract: An area boundary between a system common area and a job private area is set at any page boundary independently from a segment boundary, and for the segment (boundary segment) containing the area boundary, a page table is prepared for each virtual address space. Thus, virtual pages which are not used as the system common area in the bondary segment can be used by jobs as job private areas.The real page is fixedly allocated to the virtual page belonging to the system common area in the boundary segment. Thus, it is not necessary to simultaneously update page tables for the system common area. Those virtual pages may be subjects of dynamic allocation of the virtual storage.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: February 5, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Yasufumi Yoshizawa, Taketoshi Sakuraba, Toshiaki Arai, Toshiyuki Kinoshita, Minoru Shibamiya, Takashige Kubo