Patents by Inventor Randal K. Mullin

Randal K. Mullin 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).

  • Predictive historical cache memory
    Patent number: 5285527
    Abstract: A cache memory functioning as a circular buffer for use as a part historical, part predictive cache memory is provided. A first register contains data having a value corresponding to a cache memory location of a last instruction executed by a processor and a second register contains data having a value corresponding to a memory location in the cache memory of a last prefetched instruction. Prefetching of instructions from a main memory to the cache memory is disabled if the difference between the values in the first and second pointer registers exceeds a predetermined amount.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: February 8, 1994
    Assignee: Northern Telecom Limited
    Inventors: William R. Crick, Walter J. Jager, Michael L. Takefman, Randal K. Mullin