Apparatus for discriminating optical recording media of different thicknesses from each other and reproducing information therefrom

Apparatus for discriminating optical recording media of different thicknesses from each other and reproducing information therefrom

  • CN 1,105,380 C
  • Filed: 08/07/1996
  • Issued: 04/09/2003
  • Est. Priority Date: 11/30/1995
  • Status: Active Grant
First Claim
Patent Images

1. one kinds be used to differentiate different optical recording medias (1) and from the optical recording media the device of information reproduction, comprising:

  • Optical-head apparatus (10,111), be used for from have different-thickness optical recording media (1) pick up the required control signal of information reproduction;

    Identification device (13,113,213,313), it differentiates the type of said optical recording media (1) according to the control signal of being picked up by said optical-head apparatus (10);

    WithTranscriber (18,118,218,318), it is according to said identification device (13,113,213,313) identification result, go up information reproduction by said optical-head apparatus (10) from said optical recording media (1), wherein be used to the identification device of differentiating (13,113,213,313) employed said control signal is a focus error signal.

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