APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING BROADCASTING SIGNAL

摘要

PURPOSE: An apparatus and method for transmitting/receiving a broadcasting signal are provided to increase the use efficiency of data resource according to a service grade. CONSTITUTION: A basic first service stream is generated by processing first service stream(S210). A second service stream is processed in the first service stream(S220). A third service stream is processed by generating an added hierarchical signal(S230). A hierarchical modulation signal is generated by modulating the basic first layer signal(S240).