Patent ID: 8068517

Claim:
A method of processing a digital television (DTV) signal in a DTV receiver, the method comprising: receiving the DTV signal through an antenna, the DTV signal comprising enhanced data and main data; demodulating the received DTV signal; channel equalizing the demodulated DTV signal; and trellis decoding channel-equalized DTV signal, wherein the DTV signal is generated in a DTV transmitter, and wherein generating the DTV signal in the DTV transmitter comprises: randomizing enhanced data; first Reed-Solomon (RS) encoding the randomized enhanced data; convolutional encoding the first RS-encoded enhanced data; deinterleaving the convolutional encoded enhanced data; second RS encoding the deinterleaved enhanced data; interleaving the second RS-encoded enhanced data; trellis encoding the interleaved enhanced data; and transmitting the DTV signal comprising the trellis-encoded enhanced data.