TRANSMISSION METHOD, TRANSMISSION APPARATUS, RECEIVING METHOD, AND RECEIVING APPARATUS FOR A DIGITAL MULTIMEDIA BROADCAST SERVICE

摘要

A transmission apparatus for a broadcast service according to the present invention comprises: a sync layer (SL) packetizer which receives a basic layer elementary stream and an enhanced layer elementary stream and generates SL packets for each stream; a packetized elementary stream (PES) packetizer which converts each of the SL packets into PES packets; a first TS multiplexer unit which multiplexes the PES packets and outputs a basic layer transport stream; and a second TS multiplexer unit which multiplexes the PES packets, and outputs an enhanced layer transport stream, wherein said second TS multiplexer unit inserts, into the enhanced layer transport stream, a descriptor containing information on whether or not the enhanced layer transport stream is dependent on the basic layer transport stream.