Patent ID: 8675757

Claim:
A digital television (DTV) transmitting system for processing digital broadcast data, the DTV transmitting system comprising: a randomizer for randomizing enhanced data; an encoder for encoding each bit of the randomized enhanced data at a coding rate of ½ in order to output data symbols; a symbol to byte converter for converting the data symbols to data bytes; a deinterleaver for deinterleaving the data bytes; a Reed-Solomon (RS) encoder for RS-coding enhanced data packets including the deinterleaved data bytes to add RS parity data; a data interleaver for interleaving data of the RS-coded enhanced data packets, wherein the interleaved data comprise a known data sequence; a trellis encoder for trellis coding the interleaved data at a coding rate of ⅔, wherein at least one memory of the trellis encoder is initialized at a start of the known data sequence; and a transmitting unit for transmitting a digital broadcast signal including the trellis-encoded data.