Patents by Inventor Chih-Yuan Pei

Chih-Yuan Pei 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).

  • Memory system architecture
    Patent number: 6226732
    Abstract: A memory architecture includes a virtual memory system and a physical memory system. For one mode of operation all memory accesses are performed within the virtual memory system. For a second mode of operation, accesses within a range of shadowed addresses are redirected to the physical memory system. Addresses outside of the range of shadowed addresses are still performed by the virtual memory system.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: May 1, 2001
    Assignee: Hitachi Micro Systems, Inc.
    Inventors: Chih-Yuan Pei, Kimihiro Sugino