| 摘要 |
PROBLEM TO BE SOLVED: To enable a user to make reproducing of many and diversified kinds of digital audio disks and to enable a disk manufacturer to utilize the same disk by different methods. SOLUTION: A DVD(digital versatile disk) encoding circuit 34 records >=1 musical pieces, bonus information on the musical pieces, interactive data for accessing the bonus information and a disk identifier indicating the DVD enhanced audio disk to the DVD enhanced audio disk. A control section 63 on a reproducing side decides whether to receive the input of the interactive data or not in accordance with the disk identifier and permits the reproducing of the bonus information when the correct interactive data is inputted in the case of the decision to accept the same. |
