| 摘要 |
<p>The optical disc comprises a substrate layer (2), a read-only data layer (3) having a pit/land data structure including user data and control data arranged in tracks on the substrate layer (2), and a nonlinear layer (4) with a super-resolution structure disposed on the data layer, wherein the control data are correctly readable only by including a reverse rotation of the disc. The control data include in particular a protection code for the disc, for example a copy protection code, so that the user data of the disc are only readable after reading of the control data.</p> |
