Broadcasting signal receiver and method for transmitting/receiving broadcasting signal

Abstract

A broadcasting signal receiver and a method for transmitting/receiving a broadcasting signal are disclosed. An identifier of a cell is configured in second program table information or signaling information of the broadcasting signal. If the cell is changed, channel information of the changed cell can be obtained from second program table information in which transmission channel information of each cell for a broadcasting program is configured. Accordingly, the broadcasting signal receiver can continuously output the program although the cell is changed.

What is claimed is: 
     
       1. A method of transmitting a broadcast signal, the method comprising:
 encoding mobile data;   forming data groups including the encoded mobile data, known data sequences, signaling information and placeholder bytes for main data, MPEG-2 headers and non-systematic Reed-Solomon (RS) parity,   wherein each of the data groups further includes a plurality of regions and the signaling information is inserted into a specific region of the plurality of regions, and   wherein at least two of the known data sequences have different lengths;   deinterleaving data in each of the data groups;   removing the placeholder bytes for the main data and the non-systematic RS parity in the deinterleaved data and replacing the placeholder bytes for the MPEG-2 headers in the deinterleaved data with MPEG-2 headers to output data packets;   multiplexing main data packets including the main data and the data packets to generate multiplexed data packets;   randomizing the main data in the multiplexed data packets;   performing systematic RS encoding on the main data packets in the multiplexed data packets and non-systematic RS encoding on the data packets in the multiplexed data packets, wherein the non-systematic RS encoding includes inserting 20 bytes of RS forward error correction (FEC) data obtained from the non-systematic RS encoding into a pre-determined parity byte location within each mobile data packet; and   transmitting the broadcast signal including the data groups during slots, the slots being time periods for multiplexing the mobile data and the main data.   
     
     
       2. The method of  claim 1 , wherein randomizing the main data in the multiplexed data packets includes randomizing the MPEG-2 headers in the multiplexed data packets. 
     
     
       3. The method of  claim 1 , further comprising interleaving main data in the systematic RS encoded main data packets and mobile data in the non-systematic RS encoded data packets as an inverse process of the deinterleaving. 
     
     
       4. The method of  claim 1 , further comprising block processing the encoded mobile data for encoding with a specific code rate of either 1/2 or 1/4. 
     
     
       5. An apparatus for transmitting a broadcast signal, the apparatus comprising:
 a first encoder configured to encode mobile data;   a group formatter configured to form data groups including the encoded mobile data, known data sequences, signaling information and placeholder bytes for main data, MPEG-2 headers and non-systematic Reed-Solomon (RS) parity,   wherein each of the data groups includes a plurality of regions and the signaling information is inserted into a specific region of the plurality of regions, and   wherein at least two of the known data sequences have different lengths;   a deinterleaver configured to deinterleave data in the each of the data groups;   a packet formatter configured to remove the placeholder bytes for the main data and the non-systematic RS parity in the deinterleaved data and replace the placeholder bytes for the MPEG-2 headers in the deinterleaved data with MPEG-2 headers to output data packets;   a multiplexer configured to multiplex main data packets including the main data and the data packets to generate multiplexed data packets;   a randomizer configured to randomize the main data in the multiplexed data packets;   a second encoder configured to perform systematic RS encoding on the main data packets in the multiplexed data packets and non-systematic RS encoding on the data packets in the multiplexed data packets, wherein the non-systematic RS encoding includes inserting 20 bytes of RS forward error correction (FEC) data obtained from the non-systematic RS encoding into a pre-determined parity byte location within each mobile data packet; and   a transmission unit configured to transmit the broadcast signal including the data groups during slots, the slots being time periods for multiplexing the mobile data and the main data.   
     
     
       6. The apparatus of  claim 5 , wherein the randomizer is further configured to randomize the MPEG-2 headers in the multiplexed data packets. 
     
     
       7. The apparatus of  claim 5 , further comprising an interleaver configured to interleave main data in the systematic RS encoded main data packets and mobile data in the non-systematic RS encoded data packets as an inverse process of the deinterleaver. 
     
     
       8. The apparatus of  claim 5 , further comprising a block processor configured to block process the encoded mobile data for encoding with a specific code rate of either 1/2 or 1/4. 
     
     
       9. A method of transmitting a broadcast signal in a broadcast transmitter, the method comprising:
 randomizing broadcast service data for a broadcast service, the broadcast service data including a first table;   encoding the randomized broadcast service data;   encoding signaling data for signaling the broadcast service data;   generating a frame including the encoded broadcast service data, the encoded signaling data, and known data information, at least two of the known data information having different patterns,   wherein the frame includes at least one area including the encoded broadcast service data, the at least one area is classified based on attributes of the at least one area, and   wherein the encoded signaling data are included in the frame separately from the encoded broadcast service data; and   transmitting the generated frame,   wherein the broadcast service data includes signaling information, the signaling information is carried in a signaling table, and   wherein the signaling table includes:
 an identifier identifying a type of the first table included in the broadcast service data; and 
 a version number that is changed when information in the first table is changed. 
   
     
     
       10. A broadcast transmitter for transmitting a broadcast signal, the broadcast transmitter comprising:
 a randomizer configured to randomize broadcast service data for a broadcast service, the broadcast service data including a first table;   a first encoder configured to encode the randomized broadcast service data;   a second encoder configured to encode signaling data for signaling the broadcast service data;   a frame generator configured to generate a frame including the encoded broadcast service data, the encoded signaling data, and known data information, at least two of the known data information having different patterns,   wherein the frame includes at least one area including the encoded broadcast service data, the at least one area is classified based on attributes of the at least one area, and   wherein the encoded signaling data are included in the frame separately from the encoded broadcast service data; and   at least one antenna configured to transmit the generated frame,   wherein the broadcast service data includes signaling information, the signaling information is carried in a signaling table, and   wherein the signaling table includes:
 an identifier identifying a type of the first table included in the broadcast service data; and 
 a version number that is changed when information in the first table is changed. 
   
     
     
       11. The method of claim 9,
 wherein the first table includes information about a broadcast stream for the broadcast service, the broadcast stream related to an Radio Frequency (RF) channel which is identified based on geographic area,   wherein the first table further includes major channel number information and minor channel number information,   the major channel number information representing a major channel number of the broadcast service, the minor channel number information representing a minor channel number of the broadcast service.   
     
     
       12. The broadcast transmitter of claim 10,
 wherein the first table includes information about a broadcast stream for the broadcast service, the broadcast stream related to an Radio Frequency (RF) channel which is identified based on geographic area,   wherein the first table further includes major channel number information and minor channel number information,   the major channel number information representing a major channel number of the broadcast service, the minor channel number information representing a minor channel number of the broadcast service.   
     
     
       13. A method of receiving a broadcast signal in a broadcast receiver, the method comprising:
 receiving a frame;   parsing the frame including broadcast service data for a broadcast service, signaling data for signaling the broadcast service data and known data information, at least two of the known data information having different patterns, the broadcast service data including a first table,   wherein the frame includes at least one area including the broadcast service data, the at least one area is classified based on attributes of the at least one area,   wherein the signaling data are included in the frame separately from the broadcast service data;   decoding the broadcast service data;   decoding the signaling data; and   de-randomizing the decoded broadcast service data,   wherein the broadcast service data includes signaling information, the signaling information is carried in a signaling table, wherein the signaling table includes:
 an identifier identifying a type of the first table included in the broadcast service data; and 
 a version number that is changed when information in the first table is changed. 
   
     
     
       14. A broadcast receiver for receiving a broadcast signal, the broadcast receiver comprising:
 a tuner configured to receive a frame;   a frame parser configured to parse the frame including broadcast service data for a broadcast service, signaling data for signaling the broadcast service data and known data information, at least two of the known data information having different patterns, the broadcast service data including a first table,   wherein the frame includes at least one area including the broadcast service data, the at least one area is classified based on attributes of the at least one area,   wherein the signaling data are included in the frame separately from the broadcast service data;   a first decoder configured to decode the broadcast service data;   a second decoder configured to decode the signaling data; and   a de-randomizer configured to de-randomize the decoded broadcast service data,   wherein the broadcast service data includes signaling information, the signaling information is carried in a signaling table, wherein the signaling table includes:
 an identifier identifying a type of the first table included in the broadcast service data; and 
 a version number that is changed when information in the first table is changed. 
   
     
     
       15. The method of claim 13,
 wherein the first table includes information about a broadcast stream for the broadcast service, the broadcast stream related to an Radio Frequency (RF) channel which is identified based on geographic area,   wherein the first table further includes major channel number information and minor channel number information,   the major channel number information representing a major channel number of the broadcast service, the minor channel number information representing a minor channel number of the broadcast service.   
     
     
       16. The broadcast receiver of claim 14,
 wherein the first table includes information about a broadcast stream for the broadcast service, the broadcast stream related to an Radio Frequency (RF) channel which is identified based on geographic area,   wherein the first table further includes major channel number information and minor channel number information,   the major channel number information representing a major channel number of the broadcast service, the minor channel number information representing a minor channel number of the broadcast service.