Patent ID: 8315337

Claim:
A broadcast receiving system comprising: a tuner for receiving a broadcast signal including a transmission frame, wherein a parade of data groups are received during slots within the transmission frame, the slots being basic time periods for multiplexing of mobile data and main data, wherein the data groups of the parade are assigned to the transmission frame, a total number of the data groups assigned to the transmission frame being a multiple of five, wherein a plurality of consecutive data groups in the parade are assigned to be spaced apart from one another within the transmission frame, wherein each of the data groups includes the mobile data, a transmission parameter, known data sequences and a plurality of regions including data blocks, wherein a first region of the plurality of regions includes a fourth data block, a fifth data block, a sixth data block and a seventh data block of the data blocks, wherein a second region of the plurality of regions includes a third data block and an eighth data block of the data blocks, wherein a third region of the plurality of regions includes a second data block and a ninth data block of the data blocks, wherein a fourth region of the plurality of regions includes a first data block and a tenth data block of the data blocks, wherein a first known data sequence of the known data sequences is located in the third data block of the data blocks, wherein a second known data sequence of the known data sequences and a third known data sequence of the known data sequences are located in the fourth data block of the data blocks, wherein a fourth known data sequence of the known data sequences is located in the fifth data block of the data blocks, wherein a fifth known data sequence of the known data sequences is located in the sixth data block of the data blocks, and wherein a sixth known data sequence of the known data sequences is located in the seventh data block of the data blocks; a demodulator for demodulating the broadcast signal; a transmission parameter detector for detecting the transmission parameter; a block decoder for symbol-decoding the mobile data included in the received broadcast signal in block units based upon the detected transmission parameter; and a Reed-Solomon (RS) frame decoder for building two-dimensional RS frames by gathering RS frame portions including the symbol-decoded mobile data, wherein a size of at least one of the two-dimensional RS frames is (187+P)×(N+2), wherein P and N are integers.