Patent ID: 7751446
Filing Date: 2010-07-06
Classification: H04H,H04L

Abstract:
1. A method of processing main and enhanced data in a DTV transmitting system, the method comprising: pre-coding first enhanced data having a high priority by coding the first enhanced data for forward error correction (FEC) at a first coding rate; pre-codinq second enhanced data having a low priority by coding the second enhanced data for forward error correction (FEC) at a second coding rate; generating enhanced data packets including the pre-coded first and second enhanced data; multiplexing the enhanced data packets with main data packets including the main data; RS-coding the multiplexed data packets in a first RS encoder, the first RS encoder coding each main data packet by a systematic RS encoding scheme and coding each enhanced data packet by a non-systematic RS encoding scheme; and interleaving the RS-coded enhanced and main data packets in a first data interleaver, wherein the first data interleaver outputs a group of interleaved data packets including first, second and third data regions, the second data region being located between the first and third data regions and including a plurality of consecutive enhanced data packets.