Recorded medium, reproducing apparatus, recording apparatus, and reproducing method and recording method

摘要

By packetizing main data to be recorded in a program area while providing each of the packets with a header (packet property) for managing the data length of individual packets, and further providing a management area (packet index) for batched management of a pack in managing the pack of a plurality of aggregated packets, reproduction of the header (packet property) included in the individual packs at the time of access and reproduction of the management area (packet index) on the inner circle in advance enable access to the individual packets included in the whole pack (that is, the aggregated packets).