Digital broadcasting system and data processing method

Abstract

A digital broadcasting system and a method of processing data are disclosed, which are robust to error when mobile service data are transmitted. To this end, additional encoding is performed for the mobile service data, whereby it is possible to strongly cope with fast channel change while giving robustness to the mobile service data.

What is claimed is: 
     
       1. A broadcast transmitter comprising:
 a Reed-Solomon (RS) frame encoder for generating an RS frame by adding RS parity data and Cyclic Redundancy Check (CRC) data to an RS frame payload, the RS frame payload comprising a plurality of mobile and handheld (M/H) transport packets, each of the plurality of M/H transport packets including an M-byte header, k stuffing bytes, and an (N-M-k)-byte payload, wherein the (N-M-k)-byte payload includes mobile service data, wherein N and M are natural numbers, and k is equal to or greater than 0; 
 a group formatter for mapping a portion of the RS frame into at least one region of a group that includes a plurality of regions and adding known data sequences, fast information channel (FIC) data and transmission parameter channel (TPC) data to the group, wherein the FIC data contains information for rapid mobile service acquisition, and wherein the TPC data contains FIC version information for identifying an update of the FIC data; and 
 a modulator for modulating a broadcast signal including the group. 
 
     
     
       2. The broadcast transmitter of  claim 1 , wherein the M-byte header includes field information. 
     
     
       3. The broadcast transmitter of  claim 2 , wherein the field information comprises error indication information indicating whether an error is included in the M/H transport packet. 
     
     
       4. The broadcast transmitter of  claim 2 , wherein the field information comprises stuffing indication information indicating whether the k stuffing bytes are included in the M/H transport packet. 
     
     
       5. The broadcast transmitter of  claim 1 , wherein a value of M is 2. 
     
     
       6. The broadcast transmitter of  claim 1 , further comprising:
 a first encoder for encoding the RS frame with a first code encoding scheme; and 
 a second encoder for encoding the FIC data and the TPC data with a second code encoding scheme. 
 
     
     
       7. The broadcast transmitter of  claim 6 , wherein the first code encoding scheme is a Serial Concatenated Convolutional Code (SCCC) encoding scheme, and wherein the second code encoding scheme is a Parallel Concatenated Convolutional Code (PCCC) encoding scheme. 
     
     
       8. A method of processing broadcast data in a broadcast transmitter, the method comprising:
 generating, by a Reed-Solomon (RS) frame encoder, an RS frame by adding RS parity data and Cyclic Redundancy Check (CRC) data to an RS frame payload, the RS frame payload comprising a plurality of mobile and handheld (M/H) transport packets, each of the plurality of M/H transport packets including an M-byte header, k stuffing bytes, and an (N-M-k)-byte payload, wherein the (N-M-k)-byte payload includes mobile service data, wherein N and M are natural numbers, and k is equal to or greater than 0; 
 mapping, by a group formatter, a portion of the RS frame into at least one region of a group that includes a plurality of regions and adding known data sequences, fast information channel (FIC) data and transmission parameter channel (TPC) data to the group, wherein the FIC data contains information for rapid mobile service acquisition, and wherein the TPC data contains FIC version information for identifying an update of the FIC data; and 
 modulating, by a modulator, a broadcast signal including the group. 
 
     
     
       9. The method of  claim 8 , wherein the M-byte header includes field information. 
     
     
       10. The method of  claim 9 , wherein the field information comprises error indication information indicating whether an error is included in the M/H transport packet. 
     
     
       11. The method of  claim 9 , wherein the field information comprises stuffing indication information indicating whether the k stuffing bytes are included in the M/H transport packet. 
     
     
       12. The method of  claim 8 , wherein a value of M is 2. 
     
     
       13. The method of  claim 8 , further comprising:
 encoding the RS frame with a first code encoding scheme; and 
 encoding the FIC data and the TPC data with a second code encoding scheme. 
 
     
     
       14. The method of  claim 13 , wherein the first code encoding scheme is a Serial Concatenated Convolutional Code (SCCC) encoding scheme, and wherein the second code encoding scheme is a Parallel Concatenated Convolutional Code (PCCC) encoding scheme. 
     
     
       15. A method of transmitting a broadcast signal in a broadcast transmitter, the method comprising:
 formatting broadcast service data for a service and service signaling data to output data packets, wherein each data packet includes a header and a payload, the header including type information indicating a type of the data packet;   encoding data of the data packets to add first parity data;   interleaving the encoded data;   encoding transmission parameter data for signaling the broadcast service data to add second parity data; and   transmitting a signal frame including the interleaved data and the encoded transmission parameter data,   wherein the signal frame is configured to multiple sub-frames that are concatenated in time,   wherein the transmission parameter data include information related to at least one of the multiple sub-frames, and   wherein the service signaling information includes service type information and hidden information for the service.    
     
     
       16. A broadcast transmitter for transmitting a broadcast signal, the broadcast transmitter comprising:
 a service multiplexer to format broadcast service data for a service and service signaling data to output data packets, wherein each data packet includes a header and a payload, the header including type information indicating a type of the data packet;   a first encoder to encode data of the data packets to add first parity data;   an interleaver to interleave the encoded data;   a second encoder to encode transmission parameter data for signaling the broadcast service data to add second parity data; and   a transmitting unit to transmit a signal frame including the interleaved data and the encoded transmission parameter data, wherein the signal frame is configured to multiple sub-frames that are concatenated in time,   wherein the transmission parameter data include information related to at least one of the multiple sub-frames, and   wherein the service signaling data include service type information and hidden information for the service.    
     
     
       17. The method of claim 15, wherein the transmission parameter data further include information to identify a number of the first parity data.  
     
     
       18. The broadcast transmitter of claim 16, wherein the transmission parameter data further include information to identify a number of the first parity data.