| 摘要 |
PROBLEM TO BE SOLVED: To permit reproducing operation of an optical recording medium up to a certain time through combination with a recording/reproducing apparatus in view of keeping security by recording a file information when content of password reproduced from an optical recording medium is matched with the content of input password and thereafter permitting information reproduction to an optical recording medium. SOLUTION: When the reproduced password is matched with an input password, TOC is recorded to TOC of an optical recording medium 1 as a file information based on the content of PMA read from the optical recording medium 1, a readable message for an operator is output to a personal computer, and thereby data is read from the optical recording medium 1 and then reproduced. A firmware corresponding to the part for reading PMA and password is added to the existing apparatus and or is modified. In the optical recording medium 1, TOC and readout part are not recorded, position of PMA corresponds to the position other than the address position described in an orange book and the password is recorded.
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