Patent ID: 8082484

Claim:
A digital television (DTV) transmitter for processing broadcast data, the DTV transmitter comprising: a pre-coder for pre-coding enhanced data for forward error correction (FEC); a packet formatter for generating enhanced data packets including the pre-coded enhanced data; a first Reed-Solomon (RS) encoder for RS-coding the enhanced data packets with a non-systematic RS encoding scheme, wherein 47th, 48th, 49th, 50th and 51st bytes in at least one of the RS-coded enhanced data packets are non-systematic parity data; a data interleaver for interleaving data in the RS-coded enhanced data packets; a trellis encoder for trellis-encoding the interleaved data, at least one memory included in the trellis encoder being initialized at a start of a known data sequence; and a multiplexer for multiplexing segment synchronization data and field synchronization data with the trellis-encoded data.