Servo control using digital signal processing for optical disk drive

CAFC
  • US 8,416,651 B2
  • Filed: 11/22/2010
  • Issued: 04/09/2013
  • Est. Priority Date: 01/25/2001
  • Status: Expired due to Fees
First Claim
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1. A digital servo for an optical disk drive, comprising:

  • an analog-to-digital converter for converting low-pass filtered and gain-adjusted versions of photodetector output signals into digital signals; and

    a digital signal processor configured to receive the digital signals, the digital signal processor being further configured to determine a focus error signal (FES) and a tracking error signal (TES) from the digital signals, the digital signal processor being further configured to process TES and FES through servo algorithms to produce tracking and focus control signals.

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