Patents by Inventor Marcel Dignum

Marcel Dignum 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).

  • Apparatus and method for sharing a unified memory bus between external cache memory and primary memory
    Patent number: 6065097
    Abstract: A computer system includes a central processing unit with an internal memory controller. The internal memory controller interacts with an external cache and a primary memory through a single unified memory bus. The internal memory controller generates a shared row address that is applied to the unified memory bus during an address fetching operation to simultaneously access a row in primary memory and an address in external cache. The internal memory controller may also generate a shared column address that is applied to the unified memory bus during a data return operation to simultaneously specify a column in primary memory and an address in external cache.
    Type: Grant
    Filed: August 29, 1996
    Date of Patent: May 16, 2000
    Assignee: Sun Microsystems, Inc.
    Inventors: Gary F. Feierbach, Yanhua Sun, Marcel Dignum, Norman Hayes, Saed Muhssin