Patent ID: 8090038
Filing Date: 2012-01-03
Classification: H04L,H04N

Abstract:
1. A method of transmitting a broadcast signal in a transmitter, the method comprising: performing, at a Reed-Solomon (RS) frame encoder, RS encoding on enhanced data to build an RS frame, wherein an RS frame payload including the enhanced data is RS encoded by adding RS parity bytes to each column of the RS frame payload, and the RS-encoded RS frame payload is cyclic redundancy check (CRC) encoded by adding CRC bytes to each row of the RS-encoded RS frame payload; encoding, at a block processor, data in the built RS frame, wherein the data in the built RS frame are encoded to symbols, the symbols are interleaved, and the interleaved symbols are converted to bytes; forming, at a group formatting unit, a data group including the encoded data, wherein the formed data group includes a first, second and third area of the encoded data, wherein the second area is located between the first and third areas and known data sequences are inserted in the second area; de-interleaving, at a data de-interleaver, data in the formed data group; and forming, at a packet formatter, data packets including the de-interleaved data.