Patents by Inventor Norihiko Fudeyasu

Norihiko Fudeyasu 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).

  • Microcomputer enabling an erase/write program of a flash memory to interrupt by transferring interrupt vectors from a boot ROM to a RAM
    Patent number: 6154837
    Abstract: A microcomputer including a boot ROM that stores a boot program for transferring from an outside source to a RAM an erase/write program for rewriting a flash ROM. A CPU transfers the boot program from the boot ROM to the RAM, and executes it in a boot mode, and relocates the entire interrupt vectors excluding a reset interrupt vector to the RAM in the boot mode, with the reset interrupt vector remaining in the boot ROM. This enables the erase/write program transferred to the RAM to execute interrupt processings which cannot be carried out in a conventional microcomputer.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: November 28, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Norihiko Fudeyasu, Nobusuke Abe