Patents by Inventor Michael J. Dhuey

Michael J. Dhuey 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 mapping unit for decoding address signals
    Patent number: 4774652
    Abstract: A memory mapping unit which permits a computer to run programs designed to provide 32-bit or 24-bit address signals to address a 32-bit addressable memory. When a CPU generates a 32-bit address, that address is passed through to provide a 32-bit physical address. However, when the CPU generates a 24-bit address, the most significant bits are processed by the memory mapping unit to provide a remapped 32-bit physical address. The memory mapping unit is implemented on a single semiconductor chip using gate-array technology.
    Type: Grant
    Filed: February 18, 1987
    Date of Patent: September 27, 1988
    Assignee: Apple Computer, Inc.
    Inventors: Michael J. Dhuey, Ronald R. Hochsprung