公开(公告)号：USRE46393E1

公开(公告)日：2017-05-02

申请号：US14296325

申请日：2014-06-04

Applicant: LG ELECTRONICS INC.

Inventor： Hyoung Gon Lee ,  In Hwan Choi ,  Kook Yeon Kwak ,  Byoung Gill Kim ,  Jong Moon Kim ,  Woo Chan Kim ,  Jae Hyung Kim

IPC: H04L27/00 ,  H03M13/25 ,  H03M13/00 ,  H04N21/2383 ,  H04H20/86 ,  H04H60/11 ,  H04N21/235 ,  H04N21/438 ,  H04H20/30 ,  H04L27/02 ,  H04N21/435

CPC classification number: H03M13/256 ,  H03M13/1515 ,  H03M13/253 ,  H03M13/611 ,  H03M13/6356 ,  H03M13/6362 ,  H04H20/30 ,  H04H20/86 ,  H04H60/11 ,  H04L27/02 ,  H04N21/235 ,  H04N21/2383 ,  H04N21/435 ,  H04N21/4382

Abstract: A DTV transmitter includes a pre-processor expanding original enhanced data, a data formatter generating enhanced data packets including the expanded enhanced data and inserting known data place holders into the data packets, a multiplexer multiplexing the enhanced data packets with main data packets including main data, and an RS encoder adding systematic RS parity data to each main data packet and adding non-systematic RS parity data holders to each enhanced data packet. It further includes a data interleaver interleaving the RS-coded data packets, a known data generator generating know data symbols, a converter converting the interleaved data packet into symbols, and a symbol processor processing the converted symbols. The symbol processor removes symbols representing the null data, encodes symbols representing the original enhanced data at a rate of N/M, and replaces symbols representing the know data place holders with known data symbols.

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。

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.