Patents Represented by Attorney, Agent or Law Firm Davin Stockwell
  • Patent number: 6724564
    Abstract: A disk drive and methods for preventing a coil in a voice coil motor from overheating due to the application of excess current. The disk drive comprises a servo control system. The servo control system is adapted for applying a current to a coil of the voice coil motor thereby causing the voice coil motor to move the head according to a seek distance. The servo control system generates a plurality of seek profiles for each of a plurality of seek distances and a plurality of current limits for the plurality of seek profiles. Each of the plurality of seek profiles defines a plan for controlling the current to be applied to the coil while the voice coil motor is operated over the seek distance. The plurality of current limits each define a maximum current allowed while controlling the current to be applied to the coil.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: April 20, 2004
    Assignee: Western Digital Technologies, Inc.
    Inventors: Raffi Codilian, David D. T. Nguyen, David L. Whitaker