Patents by Inventor Peter L. Desyllas

Peter L. Desyllas 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).

  • Two level store with many-to-one mapping scheme
    Patent number: 4380797
    Abstract: A data processing system has a two-level storage system in which data items are copied from a main store into a smaller, faster slave store on demand. The mapping of the main store on to the slave store is a many-to-one mapping so that situations will occur where two required data items cannot both be present simultaneously in the slave store because they map on to the same location. The system has special logic which detects this situation and, upon detection, temporarily suspends the use of the slave store and instead uses a smaller first-in first-out area of storage.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: April 19, 1983
    Assignee: International Computers Ltd.
    Inventors: Peter L. Desyllas, Barry G. Radley, Alasdair Rawsthorne, John R. Eaton, John E. Murray