Information recording medium, multiplexer, and decoder

An information recording medium in which data is recorded, the data being generated by assigning different packet identifiers to (i) one of coded video data and coded audio data, and (ii) table data regarding the coded data, and packet-multiplexing the coded data and the table data,

• wherein the table data has a main descriptor which includes:
• sub-descriptors, each of which includes a sub-tag value representing a type of side information representing a parameter for decoding the coded data, and the side information;
• and a main tag value representing a set of the sub-descriptors, and
• the sub-descriptors are stored in an order defined by a predetermined storage rule.

A decoder which obtains data that is generated by assigning different packet identifiers to (i) one of coded video data and coded audio data, and (ii) table data regarding the coded data, and packet-multiplexing the coded data and the table data, said decoder comprising:

• a de-multiplexing unit operable to de-multiplex the coded data and the table data from the packet-multiplexed data, by referring to the packet identifiers;
• an information analyzing unit operable to analyze a sub-descriptor identified by a main tag value stored in the de-multiplexed table data, and extract side information of the analyzed sub-descriptor;
• and
• a data decoding unit operable to decode the coded data based on the extracted side information.

A multiplexing method of generating data by assigning different packet identifiers to (i) one of coded video data and coded audio data, and (ii) table data regarding the coded data, and packet-multiplexing the coded data and the table data, said method comprising steps of:

• generating sub-descriptors, each of which includes a sub-tag value representing a type of side information, and the side information, the side information representing a parameter for decoding the coded data;
• generating a main descriptor which includes the sub-descriptors generated in said generating of the sub-descriptors, and a main tag value representing a set of the sub-descriptors;
• and
• generating the table data, by associating the main descriptor generated in said generating of the main descriptor, with the packet identifier of the coded data,
• wherein in said generating of the sub-descriptors, the sub-descriptors are outputted in an order defined by a predetermined storage rule.

A decoding method of obtaining data that is generated by assigning different packet identifiers to (i) one of coded video data and coded audio data, and (ii) table data regarding the coded data, and packet-multiplexing the coded data and the table data, said method comprising steps of:

• de-multiplexing the coded data and the table data from the packet-multiplexed data, by referring to the packet identifiers;
• analyzing a sub-descriptor identified by a main tag value stored in the de-multiplexed table data, and extract side information of the analyzed sub-descriptor;
• and
• decoding the coded data based on the extracted side information.