DTV television transmitter/receiver and method of processing data in DTV transmitter/receiver

摘要

A DTV transmitter includes a pre-processor pre-processing enhanced data, a data formatter generating enhanced data packets including known data, a multiplexer multiplexing the enhanced data packets with main data packets, a data randomizer randomizing the multiplexed data packets, an RS encoder RS-encoding the randomized data packets, and a data interleaver interleaving the RS-coded data packets, where a plurality of known data sequences are included in the interleaved enhanced data packets. Finally, the DTV transmitter further includes an enhanced encoder which codes each block of enhanced data placed between any two of the known data sequences and bypasses the interleaved main data packets.

主权项

1. A digital broadcast transmitter comprising:
a byte-bit converter configured to convert enhanced data bytes into bit units and output enhanced data bits; a first encoder configured to encode each of the enhanced data bits at a code rate of 1/H, wherein H is an integer greater than 1; a deinterleaver configured to deinterleave enhanced data corresponding to the encoded enhanced data bits; a removing unit configured to remove Reed Solomon (RS) parity data place holders inserted in pre-determined positions within enhanced data packets including the deinterleaved enhanced data; a second encoder configured to perform non-systematic RS encoding on the enhanced data packets from which the RS parity data place holders are removed in order to insert RS parity data in the enhanced data packets; and an interleaver configured to interleave data in the RS-encoded enhanced data packets, wherein an output of the interleaver comprises a first data group including rows having a length of 207 bytes, wherein an ith row in the first data group has N consecutive Moving Picture Experts Group (MPEG) header bytes, wherein an input of the interleaver comprises a second data group including rows having a length of 207 bytes, wherein a jth row in the second data group has M consecutive MPEG header bytes, wherein N>M, and wherein i, j, M and N are integers greater than 1.