A method for program component multiplexing and identification

摘要

A method for program components multiplexing and identification, comprising: Multiplexer generates a sequence of transport packet and associated program element information tables (PEIT). The header of a transport packet which carries the PEIT section includes a unique PEIT indicator. The de-multiplexer first locates the PEIT sections by a unique PEIT indicator contained in the transport packet header. At the program entry point, the de-multiplexer utilizes the corresponding program element identifier (PEID) of the program specific information (PSI) to search for the required transport packet that contains PSI. Based on the program structure obtained, de-multiplexer locates and extracts the needed elementary streams from the system multiplex by searching for the associated PEIDs within the PEIT, and send them to the matched elementary stream decoder for further decoding. The techniques mentioned in this invention improve the program element identification and transmission efficiency.