Patents by Inventor Hidebumi Miyata

Hidebumi Miyata 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).

  • Computer system including a dual memory configuration which supports on-line memory extraction and insertion
    Patent number: 5787464
    Abstract: A computer system and method for enabling memory expansion without shutting off the computer system are disclosed. The computer system has a dual memory configuration and supports memory insertion and extraction while being on-line. The memory content of one system may be copied to the memory of another system according to a predetermined priority or after a predetermined delay. Memory may be used efficiently during the insertion or extraction by securing a status management table expansion area in an expanded portion of memory. Memory may be expanded in computer systems that do not have an open memory slot by replacing the installed memory with a memory having a larger capacity.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: July 28, 1998
    Assignees: Hitachi, Ltd., Hitachi Process Computer Engineering, Inc.
    Inventors: Ryokichi Yoshizawa, Takeshi Miyao, Shigenori Kaneko, Tomoaki Nakamura, Hidebumi Miyata