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公开(公告)号：US20180035138A1
公开(公告)日：2018-02-01
申请号：US15730461
申请日：2017-10-11
Applicant: LG ELECTRONICS INC.
Inventor： Jongseob BAEK , Jaehyung KIM , Woosuk KO , Sungryong HONG
IPC: H04N21/236 , H04N21/6379 , H04N21/438 , H04N21/434 , H04N21/2383 , H04L1/00 , H04L5/00 , H04N21/85 , H03M13/27 , H04N21/234 , H04N7/08
CPC classification number: H04N21/236 , H03M13/09 , H03M13/1102 , H03M13/152 , H03M13/255 , H03M13/27 , H03M13/2742 , H03M13/2906 , H04L1/0071 , H04L5/0007 , H04N7/08 , H04N21/234 , H04N21/2383 , H04N21/434 , H04N21/4382 , H04N21/6379 , H04N21/85
Abstract: A method is provided for transmitting broadcast signals. Service data is encoded. The encoded service data is mapped to symbols onto constellations. Data cells are frequency interleaved in a symbol among the symbols in at least one frame unit using an interleaving sequence. The interleaving sequence is generated based on a main interleaving-sequence and a symbol offset value. The interleaving sequence is generated by operating the main interleaving-sequence with the symbol offset value. The data cells are included in the symbol with a symbol index and a frame unit with a frame unit index. The frequency interleaving of the data cells operates on a frame basis. The frequency interleaving of the data cells is reset when a first frame unit is changed to a second frame unit. Data is modulated in the at least one frame unit by an Orthogonal Frequency Division Multiplexing (OFDM) scheme. The broadcast signals carrying the modulated data are transmitted.
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公开(公告)号：US20180026819A1
公开(公告)日：2018-01-25
申请号：US15722768
申请日：2017-10-02
Applicant: LG ELECTRONICS INC.
Inventor： Jaehyung KIM , Chulkyu MUN , Woosuk KO , Jongseob BAEK , Sungryong HONG
CPC classification number: H04L27/265 , H04L1/0041 , H04L1/0042 , H04L1/0045 , H04L1/0071 , H04L5/0023 , H04L5/005 , H04L27/2602 , H04L27/2607 , H04L27/2611 , H04L27/2613 , H04L27/2647 , H04L27/2655 , H04L27/2665 , H04W72/005
Abstract: A broadcast signal transmitter is provided that includes an input formatter, a Forward Error Correction (FEC) encoder, a constellation mapper, a time interleaver, a framer and a waveform generator. The input formatter input processes input data to output Physical Layer Pipe (PLP) data. The FEC encoder performs FEC encoding on the PLP data. The constellation mapper performs constellation mapping on the PLP data. The time interleaver is configured to time interleave the PLP data. The framer is configured to generate a signal frame comprising the PLP data. The waveform generator is configured to generate a transmission broadcast signal comprising the signal frame. A number of carriers of the signal frame is determined by the equation: NoC=NoC_max−k*Δ, wherein NoC is the number of carriers, NoC_max is a maximum number of carriers, k is a reducing coefficient, and Δ is a control unit value.
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公开(公告)号：US20180026818A1
公开(公告)日：2018-01-25
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
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.
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公开(公告)号：US20170373894A1
公开(公告)日：2017-12-28
申请号：US15673058
申请日：2017-08-09
Applicant: LG ELECTRONICS INC.
Inventor： Jaehyung KIM , Woosuk KO , Chulkyu MUN , Sungryong HONG
CPC classification number: H04L27/2601 , H04L1/0041 , H04L1/0042 , H04L1/0071 , H04L1/0075 , H04L25/0232 , H04L27/2611 , H04L27/2613 , H04L27/265 , H04L27/2656 , H04L27/2662 , H04L27/2666 , H04L2001/0093
Abstract: A broadcast signal transmitter is disclosed. A broadcast signal transmitter according to an embodiment of the present invention comprises an input formatting module performing baseband formatting and outputting at least one Physical Layer Pipe (PLP) data; a BICM module error-correction processing the PLP data; a framing & interleaving module interleaving the PLP data and generating a signal frame; and a waveform generating module inserting a preamble into the signal frame and generating a broadcast signal by performing OFDM modulation.
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公开(公告)号：US20170332111A1
公开(公告)日：2017-11-16
申请号：US15634532
申请日：2017-06-27
Applicant: LG ELECTRONICS INC.
Inventor： Chulkyu MUN , Jaehyung KIM , Hochul JUNG , Woosuk KO , Sungryong HONG
IPC: H04N21/2383 , H04L27/26 , H04B7/0413 , H04H20/33 , H04N21/2389
CPC classification number: H04N21/2383 , H04B7/0413 , H04H20/33 , H04L27/2602 , H04L27/2618 , H04N21/2389
Abstract: A method for transmitting broadcast signals by an apparatus for transmitting broadcast signals, the method includes encoding data corresponding to each of data pipes; encoding signaling data; building at least one signal frame including the encoded data and the encoded signaling data; modulating data of the at least one signal frame by an Orthogonal Frequency Division Multiplex (OFDM) scheme; performing Peak to Average Power Ratio (PAPR) reduction for the modulated data using a tone reservation algorithm based on a Fast Fourier Transform (FFT) size; and transmitting time domain broadcast signals carrying the modulated data of the at least one signal frame, wherein the at least one signal frame comprises signaling symbols and data symbols, wherein a set of carriers in the signaling symbols and a set of carriers in the data symbols are reserved for the PAPR reduction, respectively.
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Patent Agency Ranking
公开(公告)号：US20170324597A1
公开(公告)日：2017-11-09
申请号：US15656796
申请日：2017-07-21
Applicant: LG ELECTRONICS INC.
Inventor： Jaehyung KIM , Woosuk KO , Chulkyu MUN , Sungryong HONG
CPC classification number: H04L27/2601 , H04L1/0041 , H04L1/0042 , H04L1/0071 , H04L1/0075 , H04L25/0232 , H04L27/2611 , H04L27/2613 , H04L27/265 , H04L27/2656 , H04L27/2662 , H04L27/2666 , H04L2001/0093
Abstract: A broadcast signal receiver is disclosed. A broadcast signal receiver according to an embodiment of the present invention comprises a synchronization & demodulation module performing signal detection and OFDM demodulation on a received broadcast signal; a frame parsing & deinterleaving module performing parsing and deinterleaving of a signal frame of the broadcast signal; a demapping & decoding module performing conversion of data of at least one Physical Layer Pipe (PLP) of the broadcast signal into the bit domain and FEC decoding of the converted PLP data; and an output processing module outputting a data stream by receiving the at least one PLP data.
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公开(公告)号：US20170214562A1
公开(公告)日：2017-07-27
申请号：US15416754
申请日：2017-01-26
Applicant: LG ELECTRONICS INC.
Inventor： Chulkyu MUN , Jaehyung KIM , Sungryong HONG , Jongseob BAEK , Byounggill KIM , Woosuk KO
CPC classification number: H04L27/2626 , H04L1/0009 , H04L1/0047 , H04L1/0057 , H04L1/0058 , H04L1/0065 , H04L1/007 , H04L1/0071 , H04L1/0072 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L7/0278 , H04L27/2614 , H04L2001/0093
Abstract: The present in provides a method for transmitting a broadcast signal. The method for transmitting a broadcast signal according to the present invention may comprise the steps of: encoding data pipe (DP) data corresponding to each of a plurality of DPs which transmit at least one service or service component; generating at least one signal frame by mapping the encoded DP data to data symbols; modulating data present in the at least one signal frame by means of an OFDM scheme; and transmitting a broadcast signal including the modulated data.
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公开(公告)号：US20170149592A1
公开(公告)日：2017-05-25
申请号：US15398123
申请日：2017-01-04
Applicant: LG ELECTRONICS INC.
Inventor： Byounggill KIM , Jaehyung KIM , Jaeho HWANG , Woosuk KO , Sungryong HONG
CPC classification number: H04L27/2613 , H04L1/0057 , H04L1/0065 , H04L1/0071 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L27/2628 , H04L2001/0093 , H04W4/06
Abstract: The present invention provides a method of transmitting broadcast signals. The method includes, demultiplexing input streams into plural PLPs (Physical Layer Pipes); encoding data of the each PLPs according to each physical layer profiles, wherein the physical layer profiles are configurations based on reception condition, wherein the each physical layer profiles include: LDPC (Low Density Parity Check) encoding the data of the PLP, bit interleaving the LDPC encoded data of the PLP; building plural signal frames by mapping the encoded data of the each PLPs, wherein each signal frame belongs to one of the physical layer profiles, wherein a super frame includes at least two built signal frames; and modulating data in the built plural signal frames by OFDM (Orthogonal Frequency Division Multiplexing) method and transmitting the broadcast signals having the modulated data,
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公开(公告)号：US20170142497A1
公开(公告)日：2017-05-18
申请号：US15419489
申请日：2017-01-30
Applicant: LG ELECTRONICS INC.
Inventor： Woochan KIM , Sungryong HONG , Woosuk KO , Jaeho HWANG , Byounggill KIM , Jaehyung KIM
IPC: H04N21/81 , H04L29/06 , H04N21/61 , H04N21/2383 , H04N21/438
CPC classification number: H04N21/814 , H04L69/22 , H04N5/38 , H04N7/08 , H04N21/2383 , H04N21/4382 , H04N21/6112 , H04N21/615
Abstract: A method for transmitting a broadcast signal, the method includes encoding data pipe (DP) data corresponding to each of a plurality of DPs; mapping the encoded DP data to data symbols to generate at least one signal frame; modulating data in the at least one signal frame using an orthogonal frequency division multiplex (OFDM) scheme; inserting a preamble at a beginning of each of the at least one signal frame in a time domain; and transmitting a broadcast signal having the preamble and the modulated data of the at least one signal frame, wherein the preamble includes a wake-up indicator which wakes up a receiver to decode a DP for an emergency alert table (EAT) and acquire the EAT.
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公开(公告)号：US20170126251A1
公开(公告)日：2017-05-04
申请号：US15402838
申请日：2017-01-10
Applicant: LG Electronics Inc.
Inventor： Jongseob BAEK , Byounggill KIM, I , Woochan KIM , Jaehyung KIM , Sungryong HONG , Chulkyu MUN , Jinyong CHOI , Jaeho HWANG , Kookyeon KWAK , Woosuk KO
CPC classification number: H03M13/2792 , H03M13/1102 , H04L1/0041 , H04L1/0042 , H04L1/0045 , H04L1/0048 , H04L1/0057 , H04L1/0058 , H04L1/0071 , H04L1/0083 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L27/2613 , H04L27/2627 , H04L2001/0093
Abstract: A method and an apparatus for transmitting broadcast signals thereof are disclosed. The method for transmitting broadcast signals includes encoding DP data according to a code rate, wherein the encoding further includes LDPC encoding the DP data according to the code rate, bit interleaving the LDPC encoded DP data, mapping the bit interleaved DP data onto constellations, MIMO (Multi Input Multi Output) encoding the mapped DP data, and time interleaving the MIMO encoded DP data; building at least one signal frame by arranging the encoded DP data; and modulating data in the built signal frame by OFDM method and transmitting the broadcast signals having the modulated data, wherein the step of modulating includes inserting CPs in the built signal frame based on a CP set which includes information about locations of CPs, wherein the CP set is defined based on FFT size.
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