Patent ID: 8306384
Filing Date: 2012-11-06
Classification: G11B,H04N

Abstract:
1. A non-transitory information recording medium on which a stream is recorded, the stream having plural access units and including at least one of video and audio, wherein each of the access units has basic data and extension data related to the basic data, the basic data is audio data that can be decoded into a completed state without requiring the extension data, and the extension data is audio data for improving the quality of data generated from the basic data, information indicating that the extension data is included in each of the access units is recorded in an area, included in each of the access units, which cannot be identified by the decoder which decodes only the basic data, and in the case where a Packetized Elementary Stream (PES) packet in a PES includes the extension data, the PES packet includes (i) information indicating that the extension data is included in the PES packet and (ii) a stream ID (stream_id), the PES including at least one of the access units, in the case where the PES packet includes the basic data, the PES packet includes (i) information indicating that the extension data is not included in the PES packet and (ii) the stream ID (stream_id), in the case where the stream ID (stream_id) is equal to a predetermined value, the PES packet includes a stream ID extension (stream_id_extension) field, in the case where the stream ID (stream_id) is not equal to the predetermined value, the PES packet does not include the stream ID extension (stream_id_extension) field, the stream ID extension (stream_id_extension) field includes either the information indicating that the extension data is included in the PES packet or the information indicating that the extension data is not included in the PES packet, and the predetermined value is a value which indicates extension_stream_id.