公开(公告)号：US10587367B2

公开(公告)日：2020-03-10

申请号：US15971238

申请日：2018-05-04

Applicant: LG ELECTRONICS INC.

Inventor： Jongwoong Shin ,  Woosuk Ko ,  Jaehyung Kim ,  Jongseob Baek ,  Sungryong Hong

IPC: H04L1/00 ,  H04L27/26 ,  H04B1/10 ,  H04L12/18 ,  H04J11/00 ,  H04L1/04 ,  H04L5/00

Abstract: A broadcast signal transmitter includes a first Forward Error Correction (FEC) encoder configured to encode core layer data, a second FEC encoder configured to encode enhanced layer data, an injection level controller configured to control power ratio between the encoded core layer data and the encoded enhanced layer data, a combiner configured to combine the core layer data and the enhanced layer data and to output Layered Division Multiplexing (LDM) data, a power normalizer configured to normalize power of the outputted LDM data, a time interleaver configured to time-interleave the LDM data, a framer configured to generate a signal frame comprising a preamble and the time-interleaved LDM data, the preamble carrying signaling information, and a modulator configured to perform Orthogonal Frequency Division Multiplexing (OFDM) modulation on the generated signal frame.

公开(公告)号：US10411738B2

公开(公告)日：2019-09-10

申请号：US15182220

申请日：2016-06-14

Applicant: LG ELECTRONICS INC.

Inventor： Jongseob Baek ,  Seoyoung Back ,  Woosuk Ko ,  Sungryong Hong

IPC: H04L1/00 ,  H04L27/26 ,  H04B7/06 ,  H03M13/27 ,  H04B7/0456 ,  H04L29/06 ,  H03M13/11 ,  H04L1/08 ,  H04B7/0413

Abstract: The present invention provides a method of transmitting broadcast signals. The method includes, formatting, by an input formatting block, input streams into plural PLPs (Physical Layer Pipes); encoding, by an encoder, data in the plural PLPs; processing, by a framing and interleaving block, the encoded data in the plural PLPs to output at least one signal frame; and waveform modulating, by a waveform generation block, data in the at least one signal frame and transmitting, by the waveform generation block, broadcast signals having the waveform modulated data.

公开(公告)号：US10291357B2

公开(公告)日：2019-05-14

申请号：US15056716

申请日：2016-02-29

Applicant: LG ELECTRONICS INC.

Inventor： Jongseob Baek ,  Woosuk Ko ,  Sungryong Hong

IPC: H04L1/00 ,  H04L1/04 ,  H04L5/00 ,  H04L27/26 ,  H04L29/06 ,  H04W72/04 ,  H04B7/0413

Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals, the apparatus comprises an encoder to encode service data, a frame builder to build at least one signal frame including the encoded service data, wherein a signal frame includes at least one preamble symbol and at least one sub-frame, a frequency interleaver to frequency interleave data in at least one of the preamble and a sub-frame in the at least one signal frame by using a different interleaving sequence generated based on an interleaving sequence and a symbol offset, a modulator to modulate the frequency interleaved data by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter to transmit the broadcast signals having the modulated data.

公开(公告)号：US10263739B2

公开(公告)日：2019-04-16

申请号：US15428443

申请日：2017-02-09

Applicant: LG ELECTRONICS INC.

Inventor： Jongseob Baek ,  Woosuk Ko ,  Sungryong Hong

IPC: H04L5/00 ,  H04L1/00 ,  H04W4/06 ,  H04L27/26 ,  H04B7/0413

Abstract: An apparatus for transmitting broadcast signals includes an encoder to encode service data, a mapper to map the encoded service data, and a time interleaver to interleave the mapped service data. The time interleaver includes a cell interleaver to interleave cells in a FEC block of the mapped service data, where the cell interleaver performs linearly writing the cells in the FEC block into a memory and randomly reading the cells in the FEC block according to a permutation sequence. The permutation sequence varies in every FEC block by using a shift value. The apparatus also includes a block interleaver to interleave the cell interleaved service data, where the block interleaver includes column-wise writing FEC blocks of the cell interleaved service data into a TI memory, and diagonal-wise reading the FEC blocks from the TI memory by skipping a part of cells included in the TI memory, and a convolutional interleaver to interleave the block interleaved service data.

公开(公告)号：US10263642B2

公开(公告)日：2019-04-16

申请号：US16166978

申请日：2018-10-22

Applicant: LG ELECTRONICS INC.

Inventor： Jongseob Baek ,  Woosuk Ko ,  Seoyoung Back ,  Sungryong Hong

IPC: H03M13/27 ,  H04L1/00 ,  H04L5/00 ,  H04B1/16 ,  H04L12/18 ,  G06F11/10 ,  H03M13/25 ,  H03M13/00 ,  H03M13/11 ,  H03M13/15

Abstract: The present invention provides a method of transmitting broadcast signals. The method includes, formatting, by an input formatting block, input streams into plural PLPs (Physical Layer Pipes); encoding, by an encoder, data in the plural PLPs; time interleaving, by a time interleaver, the encoded data in the plural PLPs, wherein the time interleaving includes: cell interleaving, by a cell interleaver, the encoded data by permuting cells in a FEC (Forward Error Correction) block in the plural PLPs; frame mapping, by a framer, the time interleaved data onto at least one signal frame; and waveform modulating, by a waveform block, the mapped data in the at least one signal frame and transmitting, by the waveform block, broadcast signals having the modulated data.

公开(公告)号：US10158517B2

公开(公告)日：2018-12-18

申请号：US15694048

申请日：2017-09-01

Applicant: LG ELECTRONICS INC.

Inventor： Jongseob Baek ,  Woosuk Ko ,  Sungryong Hong

IPC: H04J1/00 ,  H04L27/26 ,  H04L1/00 ,  H04L5/00

Abstract: A method for transmitting broadcast signals includes encoding service data; mapping the encoded service data to symbols; building a signal frame including the symbols; and frequency interleaving the symbols in the signal frame. After an interleaving sequence is generated based on a toggle bit, a basic interleaving sequence, and a symbol offset, it is checked whether or not an address of the generated interleaving sequence is within a range of an OFDM symbol being frequency-interleaved. After checking the address, the symbols are frequency interleaved using the interleaving sequence, and when the FFT size is 32K, a single permutation is applied to the basic interleaving sequence, and when the FFT size is 8K or 16K, different permutations are applied to the basic interleaving sequence.

公开(公告)号：US10103829B2

公开(公告)日：2018-10-16

申请号：US15398281

申请日：2017-01-04

Applicant: LG ELECTRONICS INC.

Inventor： Jinyong Choi ,  Byounggill Kim ,  Woochan Kim ,  Jaehyung Kim ,  Woosuk Ko ,  Sungryong Hong ,  Chulkyu Mun ,  Jaeho Hwang ,  Jongseob Baek ,  Kookyeon Kwak ,  Sangchul Moon

IPC: H04H20/44 ,  H04L1/00 ,  H04L5/00 ,  H04B7/0413

Abstract: The present invention provides a method of transmitting broadcast signals. The method includes, formatting input streams into Data Pipe, DP, data; Low-Density Parity-Check, LDPC, encoding the DP data according to a code rate; bit interleaving the LDPC encoded DP data; mapping the bit interleaved DP data onto constellations according to one of QAM (Quadrature Amplitude Modulation), NUQ (Non-Uniform QAM) or NUC (Non-Uniform Constellation); Multi-Input Multi-Output, MIMO, encoding the mapped DP data by using a MIMO encoding matrix having a MIMO encoding parameter; building at least one signal frame by mapping the MIMO encoded DP data; and modulating data in the built signal frame by an Orthogonal Frequency Division Multiplexing, OFDM, method and transmitting the broadcast signals having the modulated data.

公开(公告)号：US10097392B2

公开(公告)日：2018-10-09

申请号：US15654329

申请日：2017-07-19

Applicant: LG Electronics Inc.

Inventor： Jongseob Baek ,  Jongwoong Shin ,  Jaehyung Kim ,  Woosuk Ko ,  Sungryong Hong

IPC: H04L27/26 ,  H04L1/00 ,  H04L5/00 ,  H03M13/27 ,  H03M13/09 ,  H03M13/11 ,  H03M13/15 ,  H03M13/25 ,  H03M13/29

Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder for encoding service data, a mapper for mapping the encoded service data into a plurality of OFDM (Orthogonal Frequency Division Multiplex) symbols to build at least one signal frame, a frequency interleaver for frequency interleaving data in the at least one signal frame by using a different interleaving-seed which is used for every OFDM symbol pair comprised of two sequential OFDM symbols, a modulator for modulating the frequency interleaved data by an OFDM scheme and a transmitter for transmitting the broadcast signals having the modulated data, wherein the different interleaving-seed is generated based on a cyclic shifting value and wherein an interleaving seed is variable based on an FFT size of the modulating.

公开(公告)号：US10063289B2

公开(公告)日：2018-08-28

申请号：US15603035

申请日：2017-05-23

Applicant: LG ELECTRONICS INC.

Inventor： Jongseob Baek ,  Woosuk Ko ,  Sungryong Hong

IPC: H04B7/0413 ,  H04H60/73 ,  H04L1/00 ,  H04L27/26 ,  H04H60/11

CPC classification number: H04L27/2649 ,  H04B7/0413 ,  H04H60/11 ,  H04H60/73 ,  H04L1/0042 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0071 ,  H04L1/0075 ,  H04L27/2626 ,  H04L2001/0093

Abstract: A method for transmitting broadcast signals encodes service data corresponding to each of a plurality of physical paths and time interleaves the encoded service data by using each Time Interleaving (TI) block in an interleaving frame. In the time interleaving, each TI block includes a number of actual Forward Error Correction (FEC) blocks having the encoded service data, and further includes a number of virtual FEC blocks equal to a difference between the number of actual FEC blocks of each TI block and a maximum number of actual FEC blocks. The time interleaving is performed by acquiring a cell position by using a row index, a column index and a twisting parameter, and when the acquired cell position is corresponding to a virtual cell in the number of virtual FEC blocks, the acquired cell position is skipped during a reading operation of the time interleaving.

公开(公告)号：US10057098B2

公开(公告)日：2018-08-21

申请号：US15723979

申请日：2017-10-03

Applicant: LG ELECTRONICS INC.

Inventor： Jongseob Baek ,  Woosuk Ko ,  Sungryong Hong ,  Jaehyung Kim ,  Byeongkook Jeong

IPC: H04L27/00 ,  H04L27/26 ,  H04L1/00 ,  H04N19/30 ,  H03M13/27 ,  H04L5/00 ,  H04L1/06

CPC classification number: H04L27/2602 ,  H03M13/1102 ,  H03M13/152 ,  H03M13/255 ,  H03M13/2707 ,  H03M13/2721 ,  H03M13/2906 ,  H03M13/618 ,  H03M13/6362 ,  H04L1/0041 ,  H04L1/0042 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0058 ,  H04L1/0071 ,  H04L1/06 ,  H04L5/0007 ,  H04L5/0023 ,  H04L27/26 ,  H04L2001/0093 ,  H04N19/30

Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals comprises an encoder for encoding DP (Data Pipe) data corresponding to each of a plurality of DPs, a mapper for mapping the encoded DP data onto constellations, a time interleaver for time interleaving the mapped DP data at DP level, a frame builder for building at least one signal frame including the time interleaved DP data, a modulator for modulating data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter for transmitting the broadcast signals having the modulated data.