Calibration storage methods for a digital focus and tracking servo system with calibration

  • US 7,196,979 B2
  • Filed: 09/10/2001
  • Issued: 03/27/2007
  • Est. Priority Date: 01/25/2001
  • Status: Active Grant
First Claim
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1. A method of maintaining operating parameters for an optical disk drive, comprising:

  • providing a digital signal processor configured to receive digitized optical sensor signals from an optical pickup unit and form a focusing error signal (FES) and a tracking error signal (TES) from the digitized optical sensor signals, the digital signal processor configured with servo algorithms that process TES and FES to adjust focus and tracking in the optical disk drive;

    calibrating operating parameters of the servo algorithms to form calibrated parameters;

    storing the calibrated parameters; and

    operating the servo algorithms with the calibrated parameters.

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