Patents by Inventor Dick K. Hardin

Dick K. Hardin 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).

  • Shared storage for multiple processor systems
    Patent number: 4313161
    Abstract: A system is provided that includes a plurality of processors connected to a shared storage via an asynchronous storage interface that includes various interface logic and a ring counter that performs polling of the processors for access to the shared storage. The ring utilizes a "lookahead" feature that bypasses stages in the ring to speed up responses to request signals from the processor. The logic uses the clock from the particular processor accessing the shared memory at any point in time.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: January 26, 1982
    Assignee: International Business Machines Corporation
    Inventors: Dick K. Hardin, Frederic J. Puttlitz
  • Synchronous microcode generated interface for system of microcoded data processors
    Patent number: 4128876
    Abstract: An interface comprising normal asynchronous I/O interface hardware in combination with certain additional synchronizing connections is provided between a microcoded central processing unit (CPU) and a microcoded secondary processor (such as a floating point processor) for enabling these processors to function conjointly under common timing control as though they were natively attached to each other insofar as the execution of their respective microcodes is concerned.
    Type: Grant
    Filed: April 28, 1977
    Date of Patent: December 5, 1978
    Assignee: International Business Machines Corporation
    Inventors: Richard N. Ames, Dick K. Hardin, Joel C. Leininger, George P. Taylor