Patent ID: 8300821

Claim:
A broadcast transmitter comprising: a Reed Solomon (RS) encoder for performing RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data to package the mobile service data into an RS frame which belongs to an ensemble including a service map table (SMT) that includes Internet Protocol (IP) access information of the mobile service data and encryption information of the mobile service data, wherein the mobile service data are encrypted according to the encryption information of the mobile service data before the RS encoding; a group formatting unit for mapping a portion of the RS frame into at least one data block of a group that comprises a plurality of data blocks, a plurality of known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, wherein the FIC data includes cross layer information for mobile service acquisition, wherein the TPC data includes FIC version information for indicating an update of the FIC data, wherein the FIC data and the TPC data are included in a fourth data block of the plurality of data blocks, and wherein a first known data sequence, a third known data sequence, a fourth known data sequence, a fifth known data sequence and a sixth known data sequence of the plurality of known data sequences are spaced 16 segments apart; and a transmitting unit for transmitting a broadcast signal including the group, wherein the SMT further includes IP access information for accessing to an IP stream of key information for decryption of the mobile service data.