Patents by Inventor Shigezumi Matsui

Shigezumi Matsui 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).

  • Software debugging system for writing a logical address conversion data into a trace memory of an emulator
    Patent number: 4954942
    Abstract: The microprocessor has an address converting buffer to convert logical addresses into physical addresses and a signal generator representing the timing for the microprocessor to retrieve conversion information from an external memory and write it into the address converting buffer. With this configuration, it is possible to determine the logical address from the physical address that was output to an external circuit, without the microprocessor outputting the logical address directly to the external circuit.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: September 4, 1990
    Assignee: Hitachi Ltd.
    Inventors: Satoshi Masuda, Ikuya Kawasaki, Shigezumi Matsui