Patents by Inventor Darell S. Whitaker

Darell S. Whitaker 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).

  • Method and apparatus for error recovery in arrays
    Patent number: 5177744
    Abstract: Method and apparatus for error recovery in primary storage is provided by backup storage that stores a complete copy of primary storage. When a parity error is detected, the backup storage is used to replace data in the primary storage or the parity of primary storage. This apparatus is controlled by a processor controller which makes this replacement by comparing the primary storage, backup storage, and the primary parity storage. If after re-execution of the operation errors are still detected, the processor controller copies the data from primary storage to a second storage and retries the operation.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: January 5, 1993
    Assignee: International Business Machines Corporation
    Inventors: Brian K. Cesare, Timothy J. Slegel, Darell S. Whitaker