Patent ID: 8520743

Claim:
A method of processing broadcast data in a digital television (DTV) transmitting system, the method comprising: randomizing enhanced data; performing RS-CRC (Reed-Solomon-Cyclic Redundancy Check) encoding on the randomized enhanced data; forming data groups, wherein at least one of the data groups includes the RS-CRC encoded enhanced data; inserting a main data place holder and an MPEG header place holder into the at least one of the data groups; deinterleaving data of the data groups; removing the main data place holder and replacing the MPEG header place holder with an MPEG header to output enhanced data packets; and transmitting a transmission frame including the enhanced data packets, wherein the at least one of the data groups includes ten regions, wherein at least two of the ten regions include equal number of segments, wherein a third region of the ten regions includes a first known data sequence, wherein a fourth region of the ten regions includes a second known data sequence and a third known data sequence, wherein a fifth region of the ten regions includes a fourth known data sequence, wherein a sixth region of the ten regions includes a fifth known data sequence, and wherein a seventh region of the ten regions includes a sixth known data sequence.