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

Patent metadata

Field	Value
Publication number	US-9294325-B2
Application number	US-201414495249-A
Country	US
Kind code	B2
Filing date	Sep 24, 2014
Priority date	Sep 25, 2013
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals, 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, an encoder for encoding signaling data, a frame builder for building at least one signal frame including the encoded service data, a modulator for modulating the at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter for transmitting the broadcast signals carrying the at least one modulated signal frame.

First claim

What is claimed is:

1. A method for transmitting broadcast signals, the method comprising:
encoding service data corresponding to a Physical Layer Pipe;
first encoding signaling data;
padding zero bits to the first encoded signaling data; and
second encoding the zero padded signaling data by appending parity bits,
wherein a size of the padded zero bits is calculated based on a size of information bits and parity data of the first encoded signaling data and a size of information bits of the second encoding;
building at least one signal frame including the encoded service data and the encoded signaling 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.

2. The method of claim 1 , the encoding the signaling data further including:
permuting the parity bits in the second encoded signaling data;
puncturing the second encoded signaling data including the permuted parity bits; and
mapping the punctured signaling data into constellation symbols.

3. The method of claim 2 , wherein the puncturing the second encoded signaling data performs:
puncturing at least one of the permuted parity bits based on a permutation order, wherein the permutation order is determined based on a code rate, wherein the code rate is determined based on a size of the signaling data, and the encoding the signaling data further includes removing the inserted zero bits.

4. The method of claim 3 , the permuting the parity bits further including:
interleaving the permuted parity bits based on a permutation pattern.

5. The apparatus for transmitting broadcast signals, the apparatus comprising:
data encoder to encode service data corresponding to a Physical Layer Pipe;
a first encoder to first encode the signaling data; and
an inserter to pad zero bits to the first encoded signaling data;
a second encoder to second encode the zero padded signaling data by appending parity bits,
wherein a size of the padded zero bits is calculated based on a size of information bits and parity data of the first encoded signaling data and a size of information bits of the second encoding
a frame builder to build at least one signal frame including the encoded service data;
a modulator to modulate the at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme; and
a transmitter to transmit the broadcast signals carrying the at least one modulated signal frame.

6. The apparatus of claim 5 , wherein the second encoder to encode the signaling data further performing:
permuting the parity bits;
puncturing at least one of the permuted parity bits based on a permutation order, wherein the permutation order is determined based on a code rate, wherein the code rate is determined based on a size of the signaling data; and
a remover for removing the inserted zero bits.

7. The apparatus of claim 6 , wherein the permuting the parity bits performs interleaving the permuted parity bits based on a permutation pattern.

Assignees

• Lg Electronics Inc

Inventors

• Shin Jongwoong
• Kim Jinwoo
• Ko Woosuk
• Hwang Jaeho
• Hong Sungryong

Classifications

• H04N21/4348

  Demultiplexing of additional data and video streams · CPC title

• H04L27/2627 Primary

  Modulators · CPC title

• H04N5/067

  Arrangements or circuits at the transmitter end · CPC title

• H04L27/2626

  Arrangements specific to the transmitter only · CPC title

• H04L1/0071

  Use of interleaving (interleaving per se H03M13/27) · CPC title