Patent ID: 8098646

Claim:
A method of receiving a broadcast signal, the method comprising: receiving the broadcast signal including a transmission frame, wherein the transmission frame includes a parade of data groups, wherein the parade is a collection of data groups having same forward error correction (FEC) codes, wherein the data groups include a plurality of regions, wherein a first region of the plurality of regions is a center of a data group, wherein a second region of the plurality of regions is concentric about the first region, wherein a third region of the plurality of regions is concentric about the first region and the second region, wherein a fourth region of the plurality of regions is concentric about the first region, the second region and the third region, wherein the data groups include mobile service data, fast information channel (FIC) data, transmission parameter channel (TPC) data, and a plurality of known data sequences, wherein the plurality of known data sequences is inserted into the first region and the second region of the plurality of regions, wherein the FIC data includes information for rapid mobile service acquisition, and wherein the TPC data includes FIC version information for indicating an update of the FIC data and Reed-Solomon (RS) frame mode information; demodulating the received broadcast signal; and decoding the demodulated broadcast signal to build RS frames according to the RS frame mode information, wherein, when the RS frame mode information indicates a single mode, the parade carries a primary RS frame for the plurality of regions of the data groups, wherein, when the RS frame mode information indicates a dual mode, the parade carries a primary RS frame for the first region and the second region of the plurality of regions and carries a secondary RS frame for the third region and the fourth region of the plurality of regions, wherein the RS frames carry an ensemble that is a collection of same quality of services, wherein each of the RS frames includes a plurality of packets, and wherein the plurality of packets includes a signaling information table having access information of an Internet protocol (IP) stream for the mobile service data.