Patent ID: 7929529
Filing Date: 2011-04-19
Classification: H04H,H04L,H04N,H04W

Abstract:
1. A digital broadcast transmitter, comprising: a Reed-Solomon (RS) encoder to perform RS encoding of a supplementary data stream; an interleaver to interleave the RS-encoded supplementary data stream; and a multiplexer to construct a transmission stream comprising supplementary data packets formed from the interleaved supplementary data stream and normal data packets formed from a normal stream so that a predetermined supplementary data packet of the supplementary data packets is positioned at a predetermined position in a frame of the transmission stream, wherein: the multiplexer constructs the transmission stream so that the transmission stream comprises repeatedly arranged groups of packets; each of the groups of packets comprises a predetermined number of data packets; and the predetermined supplementary data packet positioned at the predetermined position in the frame is positioned at a predetermined position in one of the groups of packets.