Patent ID: 8472544

Claim:
A transmitter for transmitting enhanced data, the transmitter comprising: a processor for processing the enhanced data, the processor comprising: a first encoder for encoding the enhanced data for forward error correction (FEC) using a Reed-Solomon (RS) method; a second encoder for convolutional-coding the encoded enhanced data to symbols, interleaving the symbols and converting the interleaved symbols to bytes; and a data de-interleaver for de-interleaving the bytes outputted from the second encoder to output de-interleaved data; a third encoder for RS encoding the de-interleaved data by adding RS parity data to the de-interleaved data; a data interleaver for interleaving the RS encoded data; a trellis encoder for trellis encoding the interleaved data; and a transmitter for transmitting the trellis-encoded data, wherein the trellis-encoded data have a data structure, wherein the data structure includes data segments, each of the data segments comprising 207 bytes, wherein a known data sequence is included in N bytes in a K-th data segment and in M bytes in a (K+1)th data segment of the data structure, wherein the trellis encoder includes a multiplexer for selecting an initialization bit when a start bit of the known data sequence is inputted to the trellis encoder, wherein MPEG header bytes are included in L bytes in a J-th data segment of the data structure, wherein J, K, L, M and N are natural numbers, wherein L is smaller than N or M, and wherein N is not equal to M.