Digital broadcasting system and method of processing data

摘要

A digital broadcasting system and a method of processing data are disclosed. The method of processing data of a transmitting system includes generating signaling information including service-related transmission parameters of mobile service data, packetizing the generated signaling information to a predetermined data packet format, primarily multiplexing the packetized signaling information and a mobile service data packet including the mobile service data, and secondarily multiplexing the primarily multiplexed data packets and a main service data packet including main service data, thereby transmitting the secondarily multiplexed data packets to at least one transmitter located in a remote site.

主权项

1. A digital broadcast receiver, comprising:
a tuner configured to receive a broadcast signal comprising mobile service data, wherein the broadcast signal is transmitted from a broadcast transmitter by:
generating a Reed-Solomon (RS) frame by RS-encoding an RS frame payload with an RS code of (187+P, 187) and Cyclic Redundancy Check (CRC)-encoding the RS-encoded RS frame payload, thereby adding P bytes of first parity data at bottom ends of columns of the RS frame payload and adding 2 bytes of CRC data at right ends of rows of the RS frame payload including the first parity data, wherein the RS frame payload includes mobile service data, and wherein P is one of 24, 36, and 48,mapping, by a group formatter, a portion of the RS frame into at least one region of a first data group that has a plurality of regions, the first data group including a plurality of segments, wherein a number of mobile service data in an Nth segment of the first data group is less than a number of mobile service data in an (N+1)th segment of the first data group, wherein the number of mobile service data in the (N+1)th segment of the first data group is less than a number of mobile service data in an (N+2)th segment of the first data group, wherein the first data group further includes signaling information on a transmission parameter, and wherein the signaling information includes an RS code mode field indicating the RS code for the RS frame,trellis-encoding, by a trellis encoder, data being outputted from the group formatter, the trellis encoder having at least one memory that is initialized at each start of known data sequences, andmultiplexing the trellis-encoded data with field synchronization data and segment synchronization data; a demodulator configured to perform demodulating on the broadcast signal; and a decoder configured to perform decoding on the demodulated broadcast signal.