DIGITAL BROADCASTING SYSTEM AND METHOD OF PROCESSING DATA

摘要

A service multiplexer of a digital broadcasting system includes a null da ta generator, a mobile service multiplexer, a main service multiplexer, and a multiplexer. The null data generator may generate null data. The mobile se rvice multiplexer may multiplex and output compression encoded mobile servic e data, additional data for a mobile service, and null data at a pre-determi ned first data rate. The main service multiplexer may multiplex and output c ompression encoded main service data and additional data for a main service at a pre-determined second data rate. The multiplexer may multiplex the outp ut data of the main service multiplexer and the output data of the mobile se rvice multiplexer at a pre-determined third data rate and transmitting the m ultiplexed data to at least one transmitter located at a remote position.