Patents by Inventor Dennis C. Kastl

Dennis C. Kastl 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).

  • MR head thermal asperity recovery
    Patent number: 5898532
    Abstract: A disc drive data recovery system for recovering data from a magnetic disc having asperities is disclosed. The data recovery system includes a magnetoresistive head for reading magnetically encoded data from the magnetic disc and providing in response a signal indicative of the magnetically encoded data. Contact between the magnetoresistive head and an asperity corrupts the signal such that the signal contains thermal asperity noise. The data recovery system includes an asperity recovery filter coupled to the magnetoresistive head for receiving the signal from the magnetoresistive head and reducing the thermal asperity noise in the signal.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: April 27, 1999
    Assignee: Seagate Technology Inc.
    Inventors: Ke Du, Deanne S. Grover, Jim R. Shaver, Dennis C. Kastl