Patent ID: 7616688

Claim:
A method of processing a digital television (DTV) signal in a DTV receiver, the method comprising: receiving the DTV signal in the DTV receiver, the DTV signal comprising normal data and robust data multiplexed with the normal data, wherein the normal data result from performing forward error correction (FEC) operation once and the robust data result from pre-processing original robust data before multiplexing with the normal data by coding the original robust data for first FEC and periodically inserting predefined sequences into the robust data coded for the first FEC, and further coding the pre-processed robust data for second FEC after multiplexing the pre-processed original robust data with the normal data; and performing channel equalization in the DTV receiver on the robust data in the DTV signal using the predefined sequences such that the channel equalized robust data have enhanced ghost cancellation performance; and Reed-Soloman (RS) decoding the channel equalized robust data in the DTV receiver.