公开(公告)号：US09756334B2

公开(公告)日：2017-09-05

申请号：US14254606

申请日：2014-04-16

Applicant: LG ELECTRONICS INC.

Inventor： In Hwan Choi ,  Young Mo Gu ,  Kyung Won Kang ,  Kook Yeon Kwak

IPC: H04N7/12 ,  H04N19/88 ,  H04L1/00 ,  H04L27/02 ,  H04N5/44 ,  H04N21/235 ,  H04N21/236 ,  H04N21/2383 ,  H04N21/434 ,  H04N21/435 ,  H04N21/438 ,  H04L29/06

CPC classification number: H04N19/88 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/006 ,  H04L1/0071 ,  H04L27/02 ,  H04L65/607 ,  H04N5/4401 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/2383 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/4382

Abstract: A digital television system performing modulation/demodulation by VSB (vestigial side band) is provided. The invention includes a VSB transmitter including an additional error correction encoder designed such that a signal mapping of a TCM encoder is considered, a multiplexer (MUX), a TCM encoder operating in correspondence with state transition processes of the additional error correction encoder, and a signal transmission part including an RF converter. The invention further includes a VSB receiver including a signal receiver part receiving a signal transmitted from the transmitter, a TCM decoder, a signal processing part including a derandomizer, and an additional error correction decoder part.

公开(公告)号：US09185366B2

公开(公告)日：2015-11-10

申请号：US14282711

申请日：2014-05-20

Applicant: LG ELECTRONICS INC.

Inventor： Kyung Won Kang ,  In Hwan Choi

IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/00 ,  H04L1/00 ,  H04L25/03 ,  H04N5/44 ,  H04N21/2383 ,  H04N21/438 ,  H04N19/30 ,  H04N19/467

CPC classification number: H04N19/467 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0071 ,  H04L25/03012 ,  H04L2025/03382 ,  H04N5/4401 ,  H04N7/26372 ,  H04N19/30 ,  H04N19/89 ,  H04N21/2383 ,  H04N21/4382

Abstract: A method of processing a digital television (DTV) signal is disclosed. Herein, the DTV signal is generated by performing Reed-Solomon (RS) encoding on additional data, multiplexing the RS-encoded additional data with main data, RS encoding the multiplexed additional and main data, interleaving the RS-encoded additional and main data, trellis encoding the interleaved additional and main data, and transmitting a Radio Frequency (RF) DTV signal including the trellis-encoded additional and main data. The method to process the DTV signal includes receiving the DTV signal including the additional data multiplexed with the main data through an antenna, in which signaling information is periodically inserted in the additional data. The received DTV signal is demodulated including performing channel equalization on the demodulated DTV signal. Trellis decoding is performed on the channel-equalized DTV signal. Further, the additional data from the trellis-decoded DTV signal is extracted including removing dummy data from the extracted additional data.

Abstract translation: 公开了一种处理数字电视（DTV）信号的方法。 这里，通过对附加数据执行Reed-Solomon（RS）编码，将RS编码的附加数据与主数据进行多路复用，对多路复用的附加和主数据进行RS编码，交织RS编码的附加和主数据来生成DTV信号， 网格编码交织的附加和主数据，以及发送包括网格编码的附加和主数据的射频（RF）DTV信号。 处理DTV信号的方法包括通过天线接收包括与主数据多路复用的附加数据的DTV信号，其中信令信息被周期地插入到附加数据中。 所接收的DTV信号被解调，包括在解调的DTV信号上执行信道均衡。 在信道均衡的DTV信号上进行网格解码。 此外，提取来自网格解码的DTV信号的附加数据，包括从提取的附加数据中去除伪数据。

公开(公告)号：USRE46476E1

公开(公告)日：2017-07-11

申请号：US14450412

申请日：2014-08-04

Applicant: LG ELECTRONICS INC.

Inventor： In Hwan Choi ,  Kyung Won Kang ,  Kook Yeon Kwak

IPC: H03M13/00 ,  H03M13/25 ,  H04N21/235 ,  H04N21/434 ,  H04N21/81 ,  H03M13/35 ,  H04N21/435 ,  H04N21/236

CPC classification number: H03M13/256 ,  H03M13/356 ,  H03M13/6538 ,  H04N21/235 ,  H04N21/236 ,  H04N21/434 ,  H04N21/4345 ,  H04N21/435 ,  H04N21/8126

Abstract: A DTV transmitter includes a pre-processor pre-processing enhanced data, a data formatter generating enhanced data packets including the pre-processed enhanced data, and a multiplexer multiplexing the enhanced data packets with main data packets. The transmitter further includes an RS encoder RS-coding the multiplexed packets by adding systematic RS parity data to each main data packet and by adding non-systematic RS parity place holders to each enhanced data packet, and a data interleaver interleaving the RS-coded packets. The non-systematic RS parity place holders are placed after the enhanced data within each interleaved enhanced data packet, and a sequence of known data place holders is periodically included in the interleaved enhanced data packets.

公开(公告)号：US08526508B2

公开(公告)日：2013-09-03

申请号：US13718738

申请日：2012-12-18

Applicant: LG Electronics Inc.

Inventor： Byoung Gill Kim ,  In Hwan Choi ,  Kyung Won Kang ,  Kook Yeon Kwak ,  Woo Chan Kim

IPC: H04N5/44

CPC classification number: H03M13/2792 ,  H03M13/2906 ,  H03M13/2936 ,  H03M13/6538 ,  H04L1/0041 ,  H04L12/189 ,  H04L25/0212 ,  H04L25/0232 ,  H04L25/03159 ,  H04N5/21 ,  H04N5/38 ,  H04N5/40 ,  H04N5/455 ,  H04N7/12 ,  H04N19/00933 ,  H04N19/89 ,  H04N19/895 ,  H04N21/236 ,  H04N21/23614 ,  H04N21/631

Abstract: A method of processing broadcast data in a transmitting system includes randomizing enhanced data; Reed-Solomon (RS) encoding and Cyclic Redundancy Check encoding the randomized enhanced data to build an RS frame; encoding the enhanced data in the built RS frame at a coding rate of at least ½ or ¼; first interleaving the encoded enhanced data; deinterleaving the first interleaved enhanced data; first multiplexing enhanced data packets including the deinterleaved enhanced data with main data packets including main data; randomizing the main data in the multiplexed enhanced and main data packets; second interleaving the enhanced data in the multiplexed enhanced and main data packets and the randomized main data to output a data group having the interleaved enhanced data and the interleaved main data; trellis encoding data in the data group in a trellis encoding unit; and second multiplexing the trellis-encoded data with field synchronization data and segment synchronization data.

Abstract translation: 在发送系统中处理广播数据的方法包括随机化增强数据; Reed-Solomon（RS）编码和循环冗余校验编码随机增强数据构建RS帧; 以至少½或¼的编码速率对建立的RS帧中的增强数据进行编码; 首先交织编码的增强数据; 解交织第一交错增强数据; 首先将包括主数据包在内的包括解交织的增强数据的增强数据包复用在一起，包括主数据; 随机化多路复用增强主数据包中的主数据; 在多路复用的增强和主数据分组和随机化主数据中对增强数据进行第二交织，以输出具有交织增强数据和交错主数据的数据组; 网格编码单元中的数据组中的网格编码数据; 并且利用字段同步数据和段同步数据对网格编码数据进行第二次复用。

公开(公告)号：US10277255B2

公开(公告)日：2019-04-30

申请号：US14864490

申请日：2015-09-24

Applicant: LG ELECTRONICS INC.

Inventor： Byoung Gill Kim ,  In Hwan Choi ,  Kyung Won Kang ,  Kook Yeon Kwak ,  Woo Chan Kim

IPC: H03M13/27 ,  H04L25/02 ,  H04L25/03 ,  H04N19/89 ,  H04N19/895 ,  H03M13/29 ,  H04L1/00 ,  H04L12/18 ,  H04N21/236 ,  H04N21/63 ,  H04N5/38 ,  H04N7/12 ,  H03M13/00 ,  H04N5/40 ,  H04N5/455 ,  H04N5/21

Abstract: A channel equalizer includes a first transformer, an estimator, an average calculator, a second transformer, a coefficient calculator, a compensator, and a third transformer. The first transformer converts normal data into frequency domain data, where a known data sequence is periodically repeated in the normal data. The estimator estimates channel impulse responses (CIR) during known data intervals adjacent to each normal data block. The average calculator calculates an average value of the CIRs. The second transformer converts the average value into frequency domain data. The coefficient calculator calculates equalization coefficients using the average value, and the compensator compensates channel distortion of each normal data block using the coefficients. The third transformer converts the compensated data block into time domain data.

公开(公告)号：US10070151B2

公开(公告)日：2018-09-04

申请号：US14597065

申请日：2015-01-14

Applicant: LG ELECTRONICS INC.

Inventor： In Hwan Choi ,  Kyung Won Kang ,  Kook Yeon Kwak ,  Young Jin Hong ,  Sung Ryong Hong

IPC: H04N7/12 ,  H04N19/66 ,  H04B1/68 ,  H04N21/236 ,  H04N21/2383 ,  H04N21/262 ,  H04N21/434 ,  H04N21/438 ,  H04N21/6547 ,  H04N19/46

Abstract: A digital television (DTV) transmitter and a method of coding data in the DTV transmitter method are disclosed. A pre-processor pre-processes the enhanced data by coding the enhanced data for forward error correction (FEC) and expanding the FEC-coded enhanced data. A data formatter generates one or more groups of enhanced data packets, each enhanced data packet including the pre-processed enhanced data. And, a packet multiplexer generates at least one burst of enhanced data by multiplexing the one or more groups of enhanced data packets. Herein, each burst of enhanced data includes at least one group of enhanced data packets. The DTV transmitter may further include a scheduler which generates first and second control signals to control operations of the data formatter and the packet multiplexer, respectively.

公开(公告)号：US09185413B2

公开(公告)日：2015-11-10

申请号：US13938700

申请日：2013-07-10

Applicant: LG ELECTRONICS INC.

Inventor： Byoung Gill Kim ,  In Hwan Choi ,  Kyung Won Kang ,  Kook Yeon Kwak ,  Woo Chan Kim

IPC: H04N19/89 ,  H04L25/02 ,  H04L25/03 ,  H04N19/895 ,  H04N5/38 ,  H03M13/29 ,  H04N7/12 ,  H03M13/00 ,  H04N5/40 ,  H04N5/455 ,  H04N5/21 ,  H04N21/236

CPC classification number: H03M13/2792 ,  H03M13/2906 ,  H03M13/2936 ,  H03M13/6538 ,  H04L1/0041 ,  H04L12/189 ,  H04L25/0212 ,  H04L25/0232 ,  H04L25/03159 ,  H04N5/21 ,  H04N5/38 ,  H04N5/40 ,  H04N5/455 ,  H04N7/12 ,  H04N19/00933 ,  H04N19/89 ,  H04N19/895 ,  H04N21/236 ,  H04N21/23614 ,  H04N21/631

Abstract: A channel equalizer includes a first transformer, an estimator, an average calculator, a second transformer, a coefficient calculator, a compensator, and a third transformer. The first transformer converts normal data into frequency domain data, where a known data sequence is periodically repeated in the normal data. The estimator estimates channel impulse responses (CIR) during known data intervals adjacent to each normal data block. The average calculator calculates an average value of the CIRs. The second transformer converts the average value into frequency domain data. The coefficient calculator calculates equalization coefficients using the average value, and the compensator compensates channel distortion of each normal data block using the coefficients. The third transformer converts the compensated data block into time domain data.

Abstract translation: 信道均衡器包括第一变压器，估计器，平均计算器，第二变压器，系数计算器，补偿器和第三变压器。 第一变压器将正常数据转换成频域数据，其中在正常数据中周期性地重复已知的数据序列。 估计器在与每个正常数据块相邻的已知数据间隔期间估计信道脉冲响应（CIR）。 平均计算器计算CIR的平均值。 第二变压器将平均值转换为频域数据。 系数计算器使用平均值计算均衡系数，并且补偿器使用系数补偿每个正常数据块的信道失真。 第三变压器将补偿数据块转换为时域数据。