Patent ID: 6535530
Filing Date: 2003-03-18
Classification: H04N

Abstract:
A demultiplexing apparatus comprising:means for separating a program association table from an MPEG2 transport stream and storing the same in a memory; means for analyzing the program association table to obtain a packet identifier in a program map table relating to a desired program; means for separating the program table from the transport stream and storing the same in the memory; means for analyzing the program map table to obtain packet identifiers of transport stream packets for transmitting object composition information, object description information, and M pieces of audio visual object data, respectively, as well as analyzing the program map table to obtain correspondences between the packet identifiers of M pieces of object data and an identifier od_id of audio visual object data in the object composition information; information analysis means for separating object composition information, object description information, and M pieces of object data from the transport stream with referring to the respective packet identifiers, and storing the same in the respective memories; decoding means for decoding M pieces of object data; and means for composing the M pieces of decoded object data in accordance with the composition information with referring to the correspondence between the packet identifiers and the identifier od_id.