Patent ID: 9544088
Date: 2017-01-10
CPC Classifications: H04H,H04L,H04N

Claim:
1. A method of transmitting a broadcast signal in a broadcast signal transmitter, the method comprising: Forward Error Correction (FEC) encoding first layer data; FEC encoding second layer data; combining the FEC encoded first layer data and second layer data; building a frame including the combined FEC encoded first layer data and second layer data, and signaling data; inserting pilot data into the built frame; modulating data of the built frame by an Orthogonal Frequency Division Multiplexing (OFDM) method; inserting a first OFDM symbol and a second OFDM symbol in front of the modulated built frame in a time domain; and transmitting the broadcast signal including the built frame, wherein a postfix of the first OFDM symbol and a prefix of the second OFDM symbol are sequentially positioned in the time domain, wherein the signaling data includes type information for at least one physical layer pipe (PLP) of the first layer data, excluding at least one PLP of the second layer data.