Patent ID: 7949930
Filing Date: 2011-05-24
Classification: G10L,G11B,H04N

Abstract:
1. An information recording medium on which a stream, having plural access units and which includes at least one of image and audio, is recorded, wherein: each of the access units has a first packet which includes a header and basic data, and a second packet which includes a header and extension data related to the basic data; the basic data is data that is decodable in a completed state without requiring the extension data and the extension data is data for improving the quality of data generated from the basic data; the header of the first packet holds first information, which indicates that the first packet is a packet that includes the basic data, in a stream id extension field; and the header of the second packet holds second information, which indicates that the second packet is a packet that includes the extension data, in a stream id extension field.