Digital broadcasting system and data processing method

A method of processing broadcast data in a broadcast transmitter, the method comprising:

• performing, by a Reed Solomon (RS) encoder, RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data and signaling information data describing rating information of the mobile service data, thereby forming an RS frame;
• dividing the RS frame into a plurality of groups, wherein each of the groups includes a portion of data included in the RS frame, a plurality of known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, 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
• transmitting a broadcast signal including the plurality of groups,
• wherein the FIC data and the TPC data are positioned between a first known data sequence and a second known data sequence among the plurality of known data sequences with each group.

A broadcast transmitter comprising:

• a Reed Solomon (RS) encoder for performing RS encoding and Cyclic Redundancy Check (CRC) encoding on mobile service data and signaling information data describing rating information of the mobile service data, thereby forming an RS frame;
• a group formatting means for dividing the RS frame into a plurality of groups, wherein each of the groups includes a portion of data included in the RS frame, a plurality of known data sequences, fast information channel (FIC) data, and transmission parameter channel (TPC) data, 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
• a transmitting means for transmitting a broadcast signal including the plurality of groups,
• wherein the FIC data and the TPC data are positioned between a first known data sequence and a second known data sequence among the plurality of known data sequences with each group.

A method of processing broadcast data in a broadcast receiver, the method comprising:

• receiving a broadcast signal, the broadcast signal comprising fast information channel (FIC) data, transmission parameter channel (TPC) data, mobile service data, signaling information data describing rating information of the mobile service data, and a plurality of known data sequences, wherein the mobile service data and the signaling information data are encapsulated into at least one of RS frames, 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;
• demodulating the received broadcast signal;
• compensating channel distortion generated in the demodulated broadcast signal based upon at least one of the plurality of known data sequences;
• obtaining the signaling information data describing the rating information of the mobile service data from the channel distortion compensated broadcast signal;
• and
• determining a display of the mobile service data,
• wherein at least two of the plurality of known data sequences have different lengths.

A broadcast receiver comprising:

• a tuner for receiving a broadcast signal, the broadcast signal comprising fast information channel (FIC) data, transmission parameter channel (TPC) data, mobile service data, signaling information data describing rating information of the mobile service data, and a plurality of known data sequences, wherein the mobile service data and the signaling information data are encapsulated into at least one of RS frames, 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;
• a demodulator for demodulating the received broadcast signal;
• an equalizer for compensating channel distortion generated in the demodulated broadcast signal based upon at least one of the plurality of known data sequences;
• and
• a handler for obtaining the signaling information data describing the rating information of the mobile service data from the channel distortion compensated broadcast signal, and determining a display of the mobile service data,
• wherein at least two of the plurality of known data sequences have different lengths.