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Optical disc audio reproduction device having track playback monitoring system

  • US 5,249,166 A
  • Filed: 02/12/1993
  • Issued: 09/28/1993
  • Est. Priority Date: 02/12/1993
  • Status: Expired due to Fees
First Claim
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1. Apparatus for reproducing audio signals encoded on optical discs as audio tracks and monitoring playbacks of said audio tracks encoded on said optical discs by said apparatus, comprising:

  • signal detection means for detecting data signals encoded on an optical disc as a collection of numbered audio tracks, said encoded data signals corresponding to each of said audio tracks having an audio data component and a non-audio data component which contains information identifying said optical disc;

    track selection means for selecting one of said audio tracks encoded on said optical disc for playback;

    first memory means electrically connected to said track selection means, said first memory means storing a number corresponding to said audio track selected with said track selection means;

    servo control means electrically connected to said track selection means, said servo control means positioning said signal detection means and rotating said optical disc in response to selection of one of said audio tracks by said track selection means such that said signal detection means reads said encoded data signals corresponding to said selected audio track;

    demodulation means for separating said audio and non-audio data components of said encoded data signal detected by said signal detection means;

    second memory means for storing said information identifying said optical disc contained in said non-audio data component;

    said audio data component separated by said demodulation means being transmittable to a sound system for audible reproduction of said selected audio track and said information identifying said optical disc contained in said non-audio data component separated by said demodulation means being transmitted to said second memory means; and

    third memory means for storing, for each optical disc track selected by said track selection means, said number stored in said first memory means by said track selection means and said information identifying said optical disc stored in said second memory means by said demodulation means.

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