| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for reproducing an optical disk having additional functions, such as protection of copyrights, and selective reproduction permission of recorded information, by using a so-called BCA. SOLUTION: The control information in reproducing main information on the BCA 9 as an auxiliary information recording segment disposed in the innermost peripheral section 1S of an optical disk is previously recorded as bar codes and the main information is reproduced in accordance with this reproducing information. Address recording regions 76 for at least one sector component are made to remain at plural tracks 8A to 8E disposed at the BCA and exact tracking servo control is executed by reproducing addresses at reproducing. |
