Patents by Inventor Frederic J. Puttlitz

Frederic J. Puttlitz 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