Patent Catalogue

Tracking method for disc consisting of single spiral land and groove tracks with radially shifted sector header

Method of tracking a disc that a land track and a groove track is alternately connected and the sector header is radially shifted.

  • Enables easy detection of the land and groove connecting point by comparing a polarity of tracking error signal at a connecting point to it at the immediately preceding sector header.
  • Enables continuous recording or reproduction over the entire surface of the disc.


  • DVD Specifications for Rewritable Disc: Part I, Index 2.6.3,,, 5.1.1, 5.1.3,; Fig.,, ; Annex L

[Offering Patent]

  • USP 5,946,285

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