| 摘要 |
Recording data to be recorded on an optical disc such as a DVD has at least one video title set having content data files having a video object data set, a video title set information file for the video title set and video manager information. The recording data also has a volume file system information having data relating to file identification for enabling location of content data files. In order to inhibit copying by a file-by-file copying apparatus data relating to file identification in the volume information for at least one of the content data files is caused to be incorrect, for example altered The incorrect information may be at least one of a file start address, a file length, incorrect error detection data, a pointer to a corrupt video title set information file rather than the correct video title set information file.
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