Patents by Inventor Ross Schwensen Wilson

Ross Schwensen Wilson 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 write head demagnetization
    Patent number: 7411756
    Abstract: An apparatus and method for demagnetizing a write head of a disc drive. Under control of a clock oscillator, synthetic demagnetizing pulses are generated and applied to a writer-driver bridge. Also under control of the clock oscillator, a write current produced by the writer-driver bridge incorporates the demagnetizing pulses and ramps down to about zero. The train of demagnetizing pulses and the write current ramp down demagnetizes the head, reducing write head magnetic bias that may influence the proximate read head of the disc drive head.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: August 12, 2008
    Assignee: Agere Systems, Inc.
    Inventors: Ross Schwensen Wilson, Carl F. Elliott