| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for reproducing multiple kinds of data by synchronization, by which multiple related kinds of data are reproduced from one disk by synchronization. SOLUTION: When multiple kinds of data recorded in multiple data recording areas 12 and 15 being different in disk usage or data format are related, identification data which indicates that information are related is recorded in TOCs 11 and 14. The identification data are recorded when producing the disk when the disk is exclusively for reproduction and the disk is provided as the recorded one. In the case of recording, reproducing or recording other data while reproducing one data, recording is performed in the disk or a memory so as to obtain synchronization in related data and to extend a time base when at least one data is being read.
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