Patent ID: 8085878

Claim:
A receiver for receiving a broadcast signal, the receiver comprising: a tuner for tuning the broadcast signal, the broadcast signal including a parade that includes a collection of data groups having same Forward Error Correction (FEC) parameters, wherein the collection of data groups includes mobile data, signaling information and known data sequences, wherein each of the data groups includes data blocks, wherein a first known data sequence of the known data sequences is located in a third data block of the data blocks, wherein a second known data sequence and a third known data sequence of the known data sequences are located in a fourth data block of the data blocks, wherein a fourth known data sequence, a fifth known data sequence and a sixth known data sequence of the known data sequences are located in a fifth data block, a sixth data block and a seventh data block of the data blocks, and wherein the first known data sequence, the third known data sequence, the fourth known data sequence, the fifth known data sequence and the sixth known data sequence are located in the data blocks with a same pattern and are spaced specific segments apart; a demodulator for demodulating the broadcast signal; a signaling information decoder for decoding the signaling information, wherein the signaling information includes first information identifying the parade and second information indicating a first assigned data group number for the parade to which a first assigned data group belongs; and a decoder configured to decode the demodulated broadcast signal.