公开(公告)号：US20060023799A1

公开(公告)日：2006-02-02

申请号：US11178117

申请日：2005-07-08

申请人： Kyong Kang ,  Woo Kim ,  In Choi ,  Byoung Kim ,  Yong Suh

发明人： Kyong Kang ,  Woo Kim ,  In Choi ,  Byoung Kim ,  Yong Suh

IPC分类号： H04K1/10 ,  H03D1/00 ,  H03D1/04

CPC分类号： H04L25/022 ,  H04L25/0212 ,  H04L25/03159 ,  H04L2025/03496 ,  H04L2025/03522 ,  H04L2025/03617 ,  H04N5/211 ,  H04N5/4401

摘要： Channel Equalization of a digital TV is disclosed. In channel equalization for restoring an original signal from a digital TV reception signal having passed through a channel, the present invention includes estimating an impulse response of the channel from a received signal having passed through the channel using conjugate-gradient algorithm, finding an equalizer coefficient in a frequency domain using the estimated impulse response of the channel, outputting a signal equalized by multiplying a signal resulting from transforming the received signal into the frequency domain by the found equalizer coefficient, and predicting to remove an amplified noise of the equalized signal using the conjugate-gradient algorithm in a time domain. Accordingly, the variation of the channel impulse response according to time can be tracked in the dynamic channel having fast channel variation as well as the static channel, whereby equalizing performance can be enhanced.

摘要翻译： 数字电视的频道均衡被公开。 在用于从已经通过信道的数字TV接收信号恢复原始信号的信道均衡中，本发明包括使用共轭梯度算法从已经通过信道的接收信号估计信道的脉冲响应，找到均衡器系数 在使用所述信道的所述估计的脉冲响应的频域中，通过将由所述接收信号变换为频域而得到的信号乘以所述均衡器系数，输出均衡的信号，并且使用所述均衡信号来预测去除所述均衡信号的放大噪声 在时域中的共轭梯度算法。 因此，可以在具有快速信道变化的动态信道以及静态信道中跟踪根据时间的信道脉冲响应的变化，从而可以提高均衡性能。

公开(公告)号：US20070153888A1

公开(公告)日：2007-07-05

申请号：US11613923

申请日：2006-12-20

申请人： Byoung Kim ,  In Choi ,  Woo Kim ,  Jae Kim ,  Yong Suh ,  Hyoung Lee ,  Jong Kim

发明人： Byoung Kim ,  In Choi ,  Woo Kim ,  Jae Kim ,  Yong Suh ,  Hyoung Lee ,  Jong Kim

IPC分类号： H03H7/30 ,  H04K1/10

CPC分类号： H04L25/0212 ,  H04H20/30 ,  H04H20/57 ,  H04H40/18 ,  H04L25/03159 ,  H04L27/0014 ,  H04L27/2605 ,  H04L2025/03414 ,  H04N5/211 ,  H04N5/4401 ,  H04N21/2383 ,  H04N21/4382

摘要： A DTV receiver includes a tuner, a demodulator, a known sequence detector, and a frequency domain equalizer. The tuner initially receives a broadcast signal including valid data in which a known data sequence is periodically repeated. The demodulator demodulates the broadcast signal, and the known sequence detector detects the known data sequence from the demodulated signal. The frequency domain equalizer compensates channel distortion of the demodulated broadcast signal in a frequency domain using the detected known data sequence. In addition, the DTV receiver may further include a time domain equalizer which compensates channel distortion of the time domain signal, or a noise canceller which removes a predicted noise from the time domain signal.

摘要翻译： DTV接收机包括调谐器，解调器，已知序列检测器和频域均衡器。 调谐器最初接收包括有效数据的广播信号，其中周期性重复已知的数据序列。 解调器解调广播信号，已知序列检测器根据解调信号检测已知数据序列。 频域均衡器使用检测到的已知数据序列来补偿频域中解调的广播信号的信道失真。 此外，DTV接收机还可以包括补偿时域信号的信道失真的时域均衡器，或者从时域信号中去除预测噪声的噪声消除器。

公开(公告)号：US20060034362A1

公开(公告)日：2006-02-16

申请号：US11116629

申请日：2005-04-27

申请人： Byoung Kim ,  In Choi ,  Kyung Kang ,  Yong Suh ,  Woo Kim

发明人： Byoung Kim ,  In Choi ,  Kyung Kang ,  Yong Suh ,  Woo Kim

IPC分类号： H03H7/30 ,  H04K1/10 ,  H04B7/08 ,  H04B1/10

CPC分类号： H04L25/03159 ,  H04B7/0842 ,  H04B7/0845 ,  H04L2025/03426

摘要： The present invention provides an apparatus for channel equalization and method thereof, by which a digital signal received via a plurality of antennas is equalized. The present invention includes receiving digital transmission signals using a plurality of antennas, respectively, initializing equalizer coefficients and equalizing the received signals respectively, adding the equalized signals together, predicting a noise amplified in the equalizing step, and generating a final output signal by removing the predicted noise from a value resulting from adding the equalized signals together. Therefore, the present invention performs equalization using a plurality of antennas, thereby enhancing the signal to noise ratio of the final output and facilitating the equalization of the severely distorted channel.

摘要翻译： 本发明提供了一种用于信道均衡的装置及其方法，通过多路天线接收的数字信号被均衡。 本发明包括分别使用多个天线接收数字传输信号，初始化均衡器系数并分别均衡接收的信号，将均衡的信号相加在一起，预测在均衡步骤中放大的噪声，并通过去除 将来自将均衡信号相加在一起的值预测的噪声。 因此，本发明使用多个天线执行均衡，从而提高最终输出的信噪比，并且有助于严重失真的信道的均衡。

公开(公告)号：US20070230580A1

公开(公告)日：2007-10-04

申请号：US11674099

申请日：2007-02-12

申请人： Byoung Kim ,  In Choi ,  Kyung Kang ,  Kook Kwak ,  Woo Kim

发明人： Byoung Kim ,  In Choi ,  Kyung Kang ,  Kook Kwak ,  Woo Kim

IPC分类号： H04N11/04

CPC分类号： 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

摘要： 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.

摘要翻译： 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：US20070058081A1

公开(公告)日：2007-03-15

申请号：US11595666

申请日：2006-11-08

申请人： Joon Kim ,  Sung Hong ,  In Choi ,  Kyung Kang ,  Jong Shin ,  Byoung Kim ,  Woo Kim ,  Jae Kim

发明人： Joon Kim ,  Sung Hong ,  In Choi ,  Kyung Kang ,  Jong Shin ,  Byoung Kim ,  Woo Kim ,  Jae Kim

IPC分类号： H04N5/00

CPC分类号： H04N5/21 ,  H04L2025/0349 ,  H04N5/211

摘要： Disclosed are a channel equalizer and digital television receiver using the same. The equalizer comprises a channel estimator, a channel distortion compensator and noise canceller. The channel estimator estimates an impulse response of a transmission channel from a received signal. The channel distortion compensator transforms and processes the received signal and the estimated impulse response. The noise canceller predicts and eliminates amplified noise generated during equalization.

摘要翻译： 公开了使用其的信道均衡器和数字电视接收机。 均衡器包括信道估计器，信道失真补偿器和噪声消除器。 信道估计器从接收信号估计传输信道的脉冲响应。 信道失真补偿器对接收到的信号和估计的脉冲响应进行变换和处理。 噪声消除器预测并消除均衡期间产生的放大噪声。

公开(公告)号：US20070162835A1

公开(公告)日：2007-07-12

申请号：US11564821

申请日：2006-11-29

申请人： In Choi ,  Kyung Kang ,  Kook Kwak ,  Byoung Kim ,  Woo Kim ,  Jae Kim ,  Hyoung Lee ,  Jong Kim

发明人： In Choi ,  Kyung Kang ,  Kook Kwak ,  Byoung Kim ,  Woo Kim ,  Jae Kim ,  Hyoung Lee ,  Jong Kim

IPC分类号： H03M13/00

CPC分类号： H03M13/27 ,  H03M13/2936 ,  H03M13/3972 ,  H04H20/31 ,  H04H20/95 ,  H04H60/07 ,  H04N19/30 ,  H04N21/23614 ,  H04N21/2383 ,  H04N21/4345 ,  H04N21/4348 ,  H04N21/4382 ,  H04N21/8126

摘要： A DTV transmitter includes a pre-processor pre-processing enhanced data, a data formatter generating enhanced data packets including the pre-processed data and inserting known data place holders to the data packets, and a multiplexer multiplexing the enhanced data packets with main data packets. It further includes an RS encoder which RS-codes the multiplexed data packets, and a data interleaver which interleaves the RS-coded data packets. The RS encoder adds systematic RS parity data to each main data packet and adds non-systematic RS parity place holders to each enhanced data packet. The RS encoder adds the RS parity place holders such that the RS parity place holders are placed after the enhanced data within each interleaved enhanced data packet.

摘要翻译： 数字电视发射机包括预处理器预处理增强数据，数据格式化器生成包括预处理数据的增强数据分组并将已知数据占位符插入到数据分组，以及复用多路复用增强数据分组与主数据分组 。 它还包括对复用的数据分组进行RS编码的RS编码器，以及交织RS编码的数据分组的数据交织器。 RS编码器将系统RS奇偶校验数据添加到每个主数据分组，并将非系统RS奇偶校验位保持器添加到每个增强数据分组。 RS编码器加上RS奇偶校验位置保持器，使得RS奇偶校验位置保持器放置在每个交织的增强数据分组内的增强数据之后。

公开(公告)号：US20070153933A1

公开(公告)日：2007-07-05

申请号：US11611744

申请日：2006-12-15

申请人： Hyoung Gon Lee ,  In Choi ,  Kook Kwak ,  Byoung Kim ,  Jong Kim ,  Woo Kim ,  Jae Kim

发明人： Hyoung Gon Lee ,  In Choi ,  Kook Kwak ,  Byoung Kim ,  Jong Kim ,  Woo Kim ,  Jae Kim

IPC分类号： H04L23/02 ,  H04L27/00

CPC分类号： 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

摘要： 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.

摘要翻译： 数字电视发射机包括预处理器扩展原始增强数据，数据格式化器生成包括扩展增强数据的增强数据分组并将已知数据占位符插入到数据分组中，多路复用多路复用增强数据分组与主数据分组，包括主数据 以及RS编码器，将系统RS奇偶校验数据添加到每个主数据分组，并将非系统RS奇偶校验数据保持器添加到每个增强数据分组。 它还包括交织RS编码的数据分组的数据交织器，产生知识数据符号的已知数据生成器，将交织的数据分组转换为符号的转换器，以及处理转换的符号的符号处理器。 符号处理器去除表示空数据的符号，以N / M的速率对表示原始增强数据的符号进行编码，并用已知数据符号代替表示知识数据占位符的符号。

公开(公告)号：US20070140257A1

公开(公告)日：2007-06-21

申请号：US11612365

申请日：2006-12-18

申请人： Hyoung Gon Lee ,  In Choi ,  Kook Kwak ,  Byoung Kim ,  Jong Kim ,  Woo Kim ,  Jae Kim

发明人： Hyoung Gon Lee ,  In Choi ,  Kook Kwak ,  Byoung Kim ,  Jong Kim ,  Woo Kim ,  Jae Kim

IPC分类号： H04L12/56 ,  H04L12/28

CPC分类号： H04N19/61 ,  H03M13/151 ,  H03M13/23 ,  H03M13/2933

摘要： A DTV transmitter includes a pre-processor expanding original enhanced data, a data formatter generating enhanced data packets and inserting known data into the data packets, a multiplexer multiplexing the enhanced data packets with main data packets, a data randomizer randomizing the multiplexed data packets, an RS encoder RS-coding the randomized data packets, and a data interleaver interleaving the RS-coded data packets. The DTV transmitter further includes a byte-symbol converter converting the interleaved data packets into corresponding symbols, and a symbol processor encoding symbols representing the original enhanced data.

摘要翻译： 数字电视发射机包括预处理器扩展原始增强数据，数据格式化器生成增强数据分组并将已知数据插入到数据分组中，多路复用增强数据分组与主数据分组，数据随机化器随机化多路复用数据分组， 对随机化数据分组进行RS编码的RS编码器，以及交织RS编码数据分组的数据交织器。 DTV发射机还包括将交错数据分组转换为对应符号的字节符号转换器，以及编码表示原始增强数据的符号的符号处理器。

公开(公告)号：US20070104284A1

公开(公告)日：2007-05-10

申请号：US11456760

申请日：2006-07-11

申请人： Byoung Gill Kim ,  In Choi ,  Woo Kim ,  Jae Kim ,  Hyoung Lee ,  Jong Kim

发明人： Byoung Gill Kim ,  In Choi ,  Woo Kim ,  Jae Kim ,  Hyoung Lee ,  Jong Kim

IPC分类号： H04L23/02

CPC分类号： H04L27/04 ,  H04L1/006 ,  H04L1/007

摘要： A digital television (DTV) transmitter and a method of processing known data in the DTV transmitter are disclosed. The method of processing known data in a digital television (DTV) transmitter includes generating a known data sequence, trellis-encoding the known data sequence, the trellis-encoded known data sequence having upper, middle, and lower bits, wherein at least one of the upper, middle, and lower bits has an m-sequence property, and mapping the trellis-encoded known data sequence into one of 2-level, 4-level, and 8-level data sequences, wherein the mapped data sequence has substantially an m-sequence property, wherein a data sequence has an m-sequence property when a peak value among auto-correlation values of the data sequence having a length of N is 1 and all the off-peak auto-correlation values are −1/N.

摘要翻译： 公开了一种数字电视（DTV）发射机和处理DTV发射机中的已知数据的方法。 处理数字电视（DTV）发射机中的已知数据的方法包括：生成已知数据序列，对已知数据序列进行网格编码，具有上，中，低位的网格编码的已知数据序列，其中至少一个 上位，中位和低位具有m序列属性，并且将网格编码的已知数据序列映射为2级，4级和8级数据序列之一，其中映射的数据序列具有基本上 m序列特性，其中当长度为N的数据序列的自相关值中的峰值为1并且所有非高峰自相关值为-1 / N时，数据序列具有m序列特性 。

公开(公告)号：US20050129145A1

公开(公告)日：2005-06-16

申请号：US11010030

申请日：2004-12-10

申请人： Woo Kim ,  In Choi ,  Young Hong

发明人： Woo Kim ,  In Choi ,  Young Hong

IPC分类号： H04N7/015 ,  H03D1/24 ,  H04L27/06

CPC分类号： H04L27/06

摘要： There is provided a system for a signal transfer between a VSB broadcast reception chip and an enhanced data processing chip in an E8-VSB reception system compatible with an ATSC VSB reception system of a related art. The system includes a VSB receiver and an E8-VSB data processor. The VSB receiver converts a received broadcast signal of a predetermined channel into a digital baseband signal having a period of a first symbol clock, performs a channel equalizing, a noise removal, and an error correction, and outputs error-corrected data and a synchronization signal with an N times faster speed than the first symbol clock. The E8-VSB data processor receives the first symbol clock and a second symbol clock N times faster than the first symbol clock from the VSB receiver, extracts only enhanced data from the data depending on a synchronization signal outputted in synchronization with the second symbol clock, and performs an E8-VSB decoding and error correction.

摘要翻译： 提供了一种用于在与现有技术的ATSC VSB接收系统兼容的E8-VSB接收系统中的VSB广播接收芯片和增强型数据处理芯片之间的信号传送系统。 该系统包括一个VSB接收器和一个E8-VSB数据处理器。 VSB接收器将接收到的预定信道的广播信号转换成具有第一符号时钟周期的数字基带信号，执行信道均衡，噪声去除和纠错，并输出纠错数据和同步信号 速度比第一个符号时钟快了N倍。 E8-VSB数据处理器从VSB接收机接收比第一符号时钟快N倍的第一符号时钟和第二符号时钟，仅根据与第二符号时钟同步输出的同步信号从数据中提取增强数据， 并执行E8-VSB解码和纠错。