Patents by Inventor Spurgeon G. Hogan

Spurgeon G. Hogan 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).

  • Cache control for concurrent access
    Patent number: 4169284
    Abstract: The disclosure enables concurrent access to a cache by main storage and a processor by means of a cache control which provides two cache access timing cycles during each processor storage request cycle. The cache is accessible to the processor during one of the cache timing cycles and is accessible to main storage during the other cache timing cycle. No alternately accessible modules, buffering, delay, or interruption is provided for main storage line transfers to the cache.
    Type: Grant
    Filed: March 7, 1978
    Date of Patent: September 25, 1979
    Assignee: International Business Machines Corporation
    Inventors: Spurgeon G. Hogan, Carleton E. Werve, Edward C. Wong