Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals

摘要

A method and an apparatus for transmitting broadcast signals thereof. The apparatus comprises an encoder for 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 for broadcast services, an encoder for encoding signaling data, wherein the signaling data includes static data and dynamic data, a frame builder for building signal frames, wherein each of signal frames includes the encoded service data and the encoded signaling data, wherein each of signal frames belongs to one of the broadcast services, wherein the static data remain constant in the signal frames belonging to the broadcast service in a duration of a super frame and the dynamic data changes by the signal frames, a modulator for modulating the signal frames by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter for transmitting the broadcast signals carrying the modulated signal frames.

主权项

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 for broadcast services; encoding signaling data, wherein a protection level of the signaling data is determined based on a variable size of the signaling data; padding zero bits to the encoded signaling data; LDPC encoding the zero padded signaling data by appending parity bits, wherein a size of the padded zero bits is related to the variable size of the signaling data; building signal frames, wherein each of signal frames includes the encoded service data and the LDPC encoded signaling data; modulating the signal frames by an OFDM (Orthogonal Frequency Division Multiplex) scheme; and transmitting the broadcast signals carrying the modulated signal frames.