| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems such as reading error of reproduced signal due to the wobbling of prepits, complication of base mastering work and deterioration of replica producing yield, in an optical recording medium provided with lands/grooves. SOLUTION: The wobble pit is arranged in such a manner that rear edge positions of the pit before wobbling are aligned in the radial direction and front edges are aligned with an internal of the minimum pit length or the longer. Consequently, expansion of the reproducing margin, simplification of the base mastering work and improvement of the replica producing yield are attained. |
