Patents by Inventor Craig A. Parris

Craig A. Parris 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).

  • Hard disk drive infant mortality test
    Patent number: 6408406
    Abstract: A functional test for determining whether a hard disk drive has experienced an early-life failure. The test retrieves values of a selected set of stored historical performance parameters of the hard disk drive, then compares the retrieved values against a set of associated performance thresholds. If any of the selected set of stored historical performance parameters exceeds the associated performance threshold, the hard disk drive is marked as defective. The test also performs a set of non-destructive read/write tests to selected regions of the hard disk drive, generating a set of results. The non-destructive read/write test results are then compared against an associated performance threshold. If the results of the non-destructive read/write tests exceed the associated performance threshold, the hard disk drive is marked as defective.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: June 18, 2002
    Assignee: Western Digital Technologies, Inc.
    Inventor: Craig A. Parris