Patent ID: 7409702
Filing Date: 2008-08-05
Classification: H04N

Abstract:
1. A method of identifying programs in a digital video communication system, comprising: generating an auxiliary program association table (PAT) and an auxiliary program map table (PMT), wherein the auxiliary PAT and auxiliary PMT relate at least one program identifier (PID) to a program; packetizing the auxiliary PAT and auxiliary PMT and identifying packets containing the auxiliary PAT and auxiliary PMT using a designated PID; encoding the designated PID as private descriptor in a network information table (NIT); and wherein the auxiliary PAT and the auxiliary PMT are different from a conventional PAT and a conventional PMT, and, wherein the auxiliary PAT and auxiliary PMT relate at least one program identifier (PID) to at least one portion of a program encrypted with a non-legacy encryption to distinguish the at least one portion of the program encrypted with the non-legacy encryption from the at least one portion of the program encrypted with a legacy encryption.