Patents by Inventor John R. Burchfiel, Jr.

John R. Burchfiel, Jr. 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).

  • Cycle control for a microprocessor with multi-speed control stores
    Patent number: 4366540
    Abstract: A system for controlling the cycle time of a central processing unit having associated control store memory units for the storage of information is provided. The system includes a plurality of control store memory locations disposed within the control store memory units for the storage of information. A plurality of control store memory locations are operable at varying speeds and are accessible by the central processing unit. Circuitry is provided for addressing one of the plurality of control store memory locations responsive to address information contained within the information stored within the plurality of control store memory locations. The addressed information selects the next successive control store memory location to be addressed by a central processing unit.
    Type: Grant
    Filed: February 12, 1981
    Date of Patent: December 28, 1982
    Assignee: International Business Machines Corporation
    Inventors: Neil C. Berglund, John R. Burchfiel, Jr.