Patent ID: 8711960

Claim:
A method of processing broadcast data in a transmitting system, the method comprising: performing, by a Reed-Solomon (RS) frame encoder, RS encoding and cyclic redundancy check (CRC) encoding on an RS frame payload that has (N*Kc) bytes of enhanced data, thereby generating an RS frame, wherein N is a column size of the RS frame payload and Kc is a row size of the RS frame payload; encoding, by a block processor, data in the RS frame at a coding rate of G/H, wherein G<H; outputting a first data group based on the encoded data, the first data group comprising L packets having enhanced data, known data sequences, and signaling information, but no main data, wherein L is greater than 1; multiplexing enhanced data packets including data of the first data group with main data packets including the main data; interleaving, by an interleaver, data in the multiplexed enhanced and main data packets to output a second data group having first, second and third regions, the second region being positioned between the first and third regions, the first and third regions including main data and enhanced data, the second region including enhanced data, known data sequences, and signaling information, but no main data; trellis encoding data in the second data group; and modulating a broadcast signal including the trellis-encoded data.