Patent ID: 7720356

Claim:
An optical disk storing a data structure for managing reproduction by a reproduction apparatus of video data having multiple reproduction paths, comprising: one or more management files for managing reproduction of the video data by the reproducing apparatus, the management file being separate from a clip file storing the video data, each clip file being associated with one of the one or more management files, each clip file of the multiple reproduction paths being associated with one of the multiple reproduction paths, the management file storing at least one entry point map associated with one of the multiple reproduction paths, each entry point map identifying a plurality of entry points in the video data for the associated reproduction path, the entry point map mapping an address of an entry point in the video data to a presentation time stamp of the entry point, wherein the entry point map includes path change information for managing changing of reproduction paths by the reproducing apparatus, the path change information having a plurality of fields, each field associated with at least one of the plurality of entry points, and the path change information includes a field for identifying whether changing reproduction paths is permitted or not in relation to the associated entry point and another field for identifying where changing reproduction path is permitted in relation to the associated entry point, the another field identifying an entry point in a current reproduction path where changing reproduction paths is permitted if the field identifies that changing reproduction paths is permitted.