Patent ID: 7779337
Filing Date: 2010-08-17
Classification: H04N

Abstract:
1. A DTV transmitting system for processing digital broadcast data, the DTV transmitting system comprising: a signal generator for generating a first data group comprising first, second, and third regions, the second region being positioned between the first and third regions, the first and third regions including main data, RS parity data but no enhanced data, the second region including enhanced data, a plurality of known data sequences, signaling information, and RS parity data but no main data; an interleaver for interleaving the first data group to generate a second data group having fourth, fifth and sixth regions, the fifth region being positioned between the fourth and sixth regions, the fifth region including enhanced data, regularly spaced known data sequences, signaling information, and RS parity data but no main data, wherein the fourth region comprises a plurality of segments, an jth segment having main data and M consecutive enhanced data bytes, an (i+1)th segment having main data and L consecutive enhanced data bytes, an (i+2)th segment having main data and K consecutive enhanced data bytes, wherein M<L<K, wherein the sixth region comprises a plurality of segments, a jth segment having main data and X consecutive enhanced data bytes, a (j+1)th segment having main data and Y consecutive enhanced data bytes, a (j+2)th segment having main data and Z consecutive enhanced data bytes, and wherein X>Y>Z; a trellis encoder for trellis encoding the second data group; and a modulator for modulating a broadcast signal including the trellis-encoded second data group for data transmission.