Patent ID: 9641370
Date: 2017-05-02
CPC Classifications: H04B,H04L

Claim:
1. A method for transmitting broadcast signals, the method comprising: encoding service data corresponding to each of a plurality of data transmission path, wherein each of the data transmission path carries at least one service component; mapping the encoded service data onto constellations; encoding physical signaling data; building at least one signal frame including the encoded physical signaling data and the mapped service data, wherein the encoded physical signaling data is located before the mapped service data; modulating the at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme; and transmitting the broadcast signals carrying the at least one modulated signal frame, wherein a signal frame includes service information which supports rapid channel scans and service acquisition, wherein the service information includes information about each service in the signal frame, wherein the service information is located after the encoded physical signaling data, and wherein the encoded physical signaling data further includes information indicating whether or not the service information is in the signal frame.