Patents by Inventor Dave Helsel

Dave Helsel 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).

  • Head fly height by using the applied peak area ratio to determine signal PW50
    Patent number: 6735027
    Abstract: The present invention includes a circuit and method for determining fly height based upon the PW50. A signal is used to provide a measure of PW50 by detecting the peak height and the area of the signal. The ratio of the peak height and area provides an indication of PW50 and correspondingly, the fly height.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: May 11, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: Dave Helsel, James Aralis, Dino J. Pollalis
  • HEAD FLY HEIGHT BY USING THE APPLIED PEAK AREA RATIO TO DETERMINE SIGNAL PW50
    Publication number: 20010050826
    Abstract: The present invention includes a circuit and method for determining fly height based upon the PW50. A signal is used to provide a measure of PW50 by detecting the peak height and the area of the signal. The ratio of the peak height and area provides an indication of PW50 and correspondingly, the fly height.
    Type: Application
    Filed: June 2, 1998
    Publication date: December 13, 2001
    Inventors: DAVE HELSEL, JAMES ARALIS, DINO J. POLLALIS