Patent ID: 6434146
Filing Date: 2002-08-13
Classification: H04N

Abstract:
A method for demultiplexing and synchronizing digital transport packets from an isochronous interface, wherein each of the transport packets includes a packet identifier (PID) to identify a digital program to which it corresponds, the method comprising:forwarding transport packets having previously designated PIDS; for each of the forwarded transport packets, generating a local header that includes a transport sequence field; storing a transport sequence time stamp (TSTS) value in the transport sequence field in response to the PID corresponding to the forwarded transport packet indicating that the forwarded transport packet was received, wherein the TSTS value corresponds to a count of the number of packets received; and reading the transport sequence time stamp value from the local header, and transmitting the transport packet to an isochronous interface output while keeping the relative time position of the packets intact.