Patents by Inventor Tien Quang Le

Tien Quang Le 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).

  • Disk drive servo control techniques for predicting an off-track condition utilizing an estimation filter
    Patent number: 7558016
    Abstract: A disk drive comprising a moveable head, a disk, and a servo controller to control track following operations including implementing an estimation filter is disclosed. The disk includes a plurality of tracks in which a substantial majority of the tracks include a plurality of servo sectors utilized in track following operations. The servo controller implements an estimation filter and performs operations that include: determining a current position estimate of the moveable head relative to the track; predicting a subsequent position estimate of the moveable head relative to the track based upon the current position estimate; and determining whether the predicted subsequent position exceeds an error threshold.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: July 7, 2009
    Assignee: Western Digital Technologies, Inc.
    Inventors: Tien Quang Le, Duc T. Phan