Patent ID: 8098694

Claim:
A digital broadcast receiver, comprising: a tuner configured to receive broadcasting data having enhanced data and main data, the broadcasting data being generated by a digital broadcast transmitter comprising: reed solomon frame encoding the enhanced data by a reed solomon frame encoder, block processing the reed solomon frame encoded enhanced data by a block processor, formatting the block processed enhanced data into a data group by a group formatter, the data group having a plurality of regions, the data group including a first, a second, and a third region, the second region being positioned between the first and third regions, the first and third regions including the enhanced data, main data, and parity bytes, and the second region including the enhanced data, MPEG header bytes and RS parity bytes, packet formatting the group formatted enhanced data by a packet formatter, multiplexing the packet formatted enhanced data with main data by a multiplexer, and post processing the multiplexed data by a post processor, the group including known data; a demodulator configured to perform demodulating on the enhanced data based on the known data; and a decoder configured to perform decoding on the demodulated enhanced data, wherein the demodulator comprises: an equalizer configured to channel-equalize the enhanced data based on the known data; a block decoder configured to perform soft decision decoding on the channel-equalized enhanced data; and a reed solomon frame decoder configured to perform an inverse process of the reed solomon frame encoder included in the digital broadcast transmitter.