发明授权
US06233210B1 Optical drive error tracking method and apparatus 有权
光驱误差跟踪方法及装置

  • 专利标题: Optical drive error tracking method and apparatus
  • 专利标题(中): 光驱误差跟踪方法及装置
  • 申请号: US09169368
    申请日: 1998-10-09
  • 公开(公告)号: US06233210B1
    公开(公告)日: 2001-05-15
  • 发明人: David L. Schell
  • 申请人: David L. Schell
  • 主分类号: G11B713
  • IPC分类号: G11B713
Optical drive error tracking method and apparatus
摘要:
A method and apparatus provides an improved optical storage disk player. An improved method and apparatus for obtaining a tracking error signal for an optical disk player is disclosed which is general across the various data formats found in CD audio disks, CD-ROMs, and digital video disks. The present invention uses a photodetector with at least four active areas to sense the reflected laser beam. A differential amplitude tracking error signal is generated by comparing the signal strength in the different active areas.
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