Multi-standard optical disk reading apparatus and method of reading using same

  • US 5,959,280 A
  • Filed: 01/16/1997
  • Issued: 09/28/1999
  • Est. Priority Date: 01/16/1997
  • Status: Expired due to Term
First Claim
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1. An optical disk reading method comprising:

  • loading an optical disk;

    directly sensing the disk by a sensing device to detect the total number of data layers of the optical disk;

    ,processing a detection signal from the sensing device by a central processing unit;

    referring the processed signal to stored data about a standard of various optical disks to identify the type and standard of the optical disk; and

    setting modulation of servomechanism means dependent upon the identified optical disk standard;

    the servomechanism means including;

    a focusing lens servo to modulate position of a focusing lens; and

    a tracking servo to modulate movement of a pickup.

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