Patent ID: 8355451
Filing Date: 2013-01-15
Classification: H03M,H04L,H04N

Abstract:
1. A method of processing a digital broadcast signal for transmitting the digital broadcast signal, the method comprising: Reed-Solomon (RS) encoding enhanced service data for each column of at least one RS frame payload and adding a Cyclic Redundancy Check (CRC) checksum byte at a right end of each row of the at least one RS frame payload to build at least one RS frame; forming data groups including the enhanced service data in the built RS frame and a plurality of known data sequences, wherein forming the data groups comprises: deinterleaving data in each of the data groups including the enhanced service data and the place holder for the non-systematic RS parity; and multiplexing the enhanced service data in each of the formed data groups with main service data, wherein: each of the data groups having the multiplexed enhanced and main service data includes first segments, second segments and third segments, the second segments, having enhanced service data and a plurality of known data sequences, are positioned between the first and third segments, at least two of the plurality of known data sequences having different patterns, the first segments have enhanced service data and main service data, the third segments have enhanced service data and main service data, the enhanced service data in the first, second and third segments are encoded by non-systematic RS encoding, and the main service data in the first and third segments are encoded by systematic RS encoding.