Patent ID: 7664113
Filing Date: 2010-02-16
Classification: H04N

Abstract:
1. A method for system multiplexing and program component identification, the system including a multiplexer and a de-multiplexer, comprising: generating a sequence of transport packets and associated program element information tables (PEIT) at the multiplexer, the multiplexer periodically collecting a sequence of packets of multiple program elements to a PEIT interval buffer, wherein a Program Element information Table (PEIT) is inserted to the PEIT interval buffer for describing position and count of individual program elements contained in the buffer, and wherein a header of a transport packets carrying a PEIT section includes a unique PEIT indicator; and locating the PEIT sections by a unique PEIT indicator contained in the transport packet header at the de-multiplexer, the de-multiplexer utilizing a corresponding program element identifier (PEID) of a program specific information (PSI) to search for a required transport packet that contains the PSI, wherein the PSI is then parsed and a complete program structure composed of various elementary streams is re-constructed, and wherein based on the program structure obtained, the de-multiplexer locates and extracts the needed elementary streams from the multiplexed stream by searching for the associated PEID's in the PEIT, and send the elementary streams to a matched elementary stream decoder for decoding,