Patents by Inventor Alexander R. Deas

Alexander R. Deas 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).

  • Memory management apparatus that replaces defective storage locations with functional storage locations
    Patent number: 6065090
    Abstract: A device for replacing defective storage locations with working storage locations comprises receiving means for receiving an incoming address for accessing a storage location, comparing means for comparing the incoming address with all of the addresses of known defective storage locations, and directing means for directing accesses to an alternative location when the incoming address matches one of the addresses of known defective storage locations. There is one alternative storage location and one comparing means for each known defective storage location. In this invention only a portion of the incoming address is used in the comparing means. In addition, each of the comparing means may use a different portion of the address for accessing a storage location.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: May 16, 2000
    Assignee: Memory Corporation PLC
    Inventor: Alexander R. Deas