Patent ID: 8370893
Filing Date: 2013-02-05
Classification: H04H,H04N

Abstract:
1. A circuit for a digital television receiver for use in a digital television broadcast system in which a plurality of digital data streams can be provided in 1) respective streams of television broadcast packets forming the lowest layer of a layered digital television structure, the layer of the layered television structure immediately above the lowest layer including a plurality of transport streams, each transport stream including one or more of said streams of television broadcast packets, and also in 2) respective streams of Internet protocol packets forming the lowest layer of a layered Internet protocol structure, at least the stream of television broadcast packets being broadcast with a plurality of tables indicating where data of one layer of one structure can be found in another layer of one or other of the two structures, the circuit including a processor configured to: compare a first transport stream in which a selected stream of television broadcast packets are present with other transport streams in the layered digital television structure; judge if one of the other transport streams is identical to the first transport stream; conclude that said one of the other transport streams also contains the selected stream of television broadcast packets if said one of the other transport streams is identical to said first transport stream; and if none of the other transport streams is judged to be identical to the first transport stream, determine from the plurality of tables and from the stream of Internet protocol packets containing the digital television data of the selected stream of television broadcast packets, in which other stream of television broadcast packets the television data of the selected stream of television broadcast packets is found.