|
| A disc drive detects and uses the information
included in a header of a sector positioned near a track change between a land
track and a groove track. |
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· |
A land track and a groove track are switched successively and alternately
every spiral track. |
| |
· |
A sector among plural sectors arranged along the spiral track, which positions
directly before a track change, includes a header having information indicating
such track change. |
| |
· |
A Optical disc device detects the information of a track change and thereby
controls a tracking. |
[References] |
| · |
DVD Specifications for Rewritable Disc: Part 1 Version 1.0, 2.0,
Index 5.2.4 |
[Offering Patent] |
| · |
USP6,172,961 |
| · |
Others (JP, GB, FR, KR, TW, CN) |
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