公开(公告)号：US20090129450A1

公开(公告)日：2009-05-21

申请号：US11579657

申请日：2005-05-12

申请人： Ho-Min Eum ,  Yong-Tae Lee ,  Seung-Won Kim ,  Heung-Mook Kim ,  Jae-Hyun Seo ,  Sung-Ik Park ,  Soo-In Lee

发明人： Ho-Min Eum ,  Yong-Tae Lee ,  Seung-Won Kim ,  Heung-Mook Kim ,  Jae-Hyun Seo ,  Sung-Ik Park ,  Soo-In Lee

IPC分类号： H04L25/52

CPC分类号： H04H20/02 ,  H03J7/04 ,  H04B7/15528 ,  H04H20/67 ,  H04H20/72 ,  H04W56/00

摘要： Provided is a frequency synchronizing apparatus and method that can synchronize frequencies between receiving signals and transmitting signals by extracting a carrier error and sampling timing error information in a synchronization process of the receiving signal from a main transmitter or another repeater and reflecting them in the transmitting signal in an on-channel repeater. The apparatus includes a carrier recovery means for compensating a carrier frequency error of a receiving signal; a timing recovery means for compensating a sampling timing error of the receiving signal; a carrier error reflecting means for reflecting the carrier frequency error extracted from the carrier recovery means to a transmitting signal; and a timing error reflecting means for reflecting the sampling timing error extracted from the timing recovery means to the transmitting signal. The present invention is used to form an on-channel repeating network in any transmission system including a digital television broadcasting system.

摘要翻译： 提供一种频率同步装置和方法，其可以通过在来自主发射机或另一个中继器的接收信号的同步处理中提取载波误差和采样定时误差信息来同步接收信号和发射信号之间的频率并将其反射到发射信号中 在一个通道中继器。 该装置包括用于补偿接收信号的载波频率误差的载波恢复装置; 定时恢复装置，用于补偿接收信号的采样定时误差; 用于将从载波恢复装置提取的载波频率误差反映到发射信号的载波误差反射装置; 以及定时误差反映装置，用于将从定时恢复装置提取的采样定时误差反映到发射信号。 本发明用于在包括数字电视广播系统的任何传输系统中形成一个同信道重复网络。

公开(公告)号：US07301994B2

公开(公告)日：2007-11-27

申请号：US10839315

申请日：2004-05-04

申请人： Sung-Ik Park ,  Yong-Tae Lee ,  Jae-Hyun Seo ,  Seung-Won Kim ,  Soo-In Lee

发明人： Sung-Ik Park ,  Yong-Tae Lee ,  Jae-Hyun Seo ,  Seung-Won Kim ,  Soo-In Lee

IPC分类号： H04B3/36

CPC分类号： H04H20/72 ,  H04H20/02 ,  H04N5/40

摘要： Provided is a modulation apparatus that can reduce time delay of on-channel repeaters in a terrestrial digital television broadcasting system. The time delay is caused by a filter during the modulation operation in the on-channel repeaters. The modulation apparatus of the present research includes: a baseband signal forming unit for forming a baseband signal by combining the output signals of an equalization unit with the pre-defined field/segment synchronization signals in the on-channel repeaters; a pilot inserting unit for inserting a pilot signal to the baseband signal; an up-sampling unit for up-sampling the baseband signal with the pilot signal; a VSB filtering unit for filtering the up-sampled baseband signal based on a Window technique and/or an Equi-Ripple filter to thereby form an in-phase (I) signal and a quadrature (Q) signal; an up-converting unit for up-converting the frequencies of the filtered I and Q signals to frequencies of an intermediate frequency (IF) band; an adding unit for adding the up-converted I and Q signals and converting a resultant signal into a digital VSB signal of the IF band; and a digital-to-analogue converting unit for converting the digital signal of the IF band to an analogue signal.

摘要翻译： 提供了一种可以减少地面数字电视广播系统中的通道中继器的时间延迟的调制装置。 在通道中继器的调制操作期间，时间延迟是由滤波器引起的。 本研究的调制装置包括：基带信号形成单元，用于通过将均衡单元的输出信号与在线通道中继器中的预定义的场/段同步信号组合来形成基带信号; 导频插入单元，用于将导频信号插入到基带信号中; 用于使用导频信号对基带信号进行上采样的上采样单元; VSB滤波单元，用于基于Window技术和/或Equi-Ripple滤波器对上采样基带信号进行滤波，从而形成同相（I）信号和正交（Q）信号; 上变频单元，用于将滤波的I和Q信号的频率上变频到中频（IF）频带的频率; 加法单元，用于将上变频的I和Q信号相加，并将结果信号转换成IF频带的数字VSB信号; 以及用于将IF频带的数字信号转换为模拟信号的数模转换单元。

公开(公告)号：US20070041434A1

公开(公告)日：2007-02-22

申请号：US10577532

申请日：2004-10-29

申请人： Sung-Ik Park ,  Yong-Tae Lee ,  Jae-Hyun Seo ,  Seung-Won Kim ,  Soo-In Lee

发明人： Sung-Ik Park ,  Yong-Tae Lee ,  Jae-Hyun Seo ,  Seung-Won Kim ,  Soo-In Lee

IPC分类号： H04B3/36

CPC分类号： H04H20/06 ,  H04B7/15564 ,  H04N5/211 ,  H04N5/38

摘要： Provided is an on-channel repeater and method thereof. The on-channel repeating apparatus includes: a receiving unit for receiving a Radio Frequency (RF) broadcast signal; a demodulating unit for converting the RF signal into a baseband signal; an equalizing unit for equalizing the baseband signal to generate an equalized baseband signal; a modulating unit for converting the equalized baseband signal into an RF signal; and a transmitting unit for transmitting the RF signal.

摘要翻译： 提供一种同频中继器及其方法。 所述在线中继装置包括：接收单元，用于接收射频（RF）广播信号; 解调单元，用于将RF信号转换成基带信号; 用于均衡基带信号以产生均衡的基带信号的均衡单元; 调制单元，用于将均衡的基带信号转换成RF信号; 以及发送单元，用于发送RF信号。

公开(公告)号：US20050094750A1

公开(公告)日：2005-05-05

申请号：US10832901

申请日：2004-04-26

申请人： Sung-Ik Park ,  Yong-Tae Lee ,  Jae-Hyun Seo ,  Seung-Won Kim ,  Soo-In Lee

发明人： Sung-Ik Park ,  Yong-Tae Lee ,  Jae-Hyun Seo ,  Seung-Won Kim ,  Soo-In Lee

IPC分类号： H04N7/015 ,  H04B1/10 ,  H04H20/06 ,  H04L27/06 ,  H04L27/14 ,  H04N5/21 ,  H04N5/38 ,  H04N5/455

CPC分类号： H04H20/06 ,  H04B7/15564 ,  H04N5/211 ,  H04N5/38

摘要： Provided is a demodulation apparatus capable of reducing time delay of an on-channel repeater in a terrestrial digital television (TV) broadcasting system and a demodulation method thereof. The demodulation method includes the steps of a) converting an analogue intermediate frequency (IF) signal into a digital IF signal; b) generating an in-phase (I) signal and a quadrature (Q) signal by converting the frequency of the digital IF signals and down-converting the frequencies of the pilot components of the I and Q signals so that the center frequencies of the I and Q signals could be shifted to 0; c) filtering the down-converted I and Q signals and maximizing signal-to-noise ratio; d) up-converting the filtered I and Q signals into baseband signals in which the center frequencies of the filtered I and Q signals are placed in baseband and shifting the frequency of the pilot components of the filtered I and Q signals to 0; and e) adding up the up-converted I and Q signals to restore the signals into baseband signals for broadcasting.

摘要翻译： 提供了能够减少地面数字电视（TV）广播系统中的同频中继器的时间延迟的解调装置及其解调方法。 解调方法包括以下步骤：a）将模拟中频（IF）信号转换成数字IF信号; b）通过转换数字IF信号的频率并对I和Q信号的导频分量的频率进行下变频来产生同相（I）信号和正交（Q）信号，使得 I和Q信号可以转移到0; c）对下变频的I和Q信号进行滤波并使信噪比最大化; d）将经滤波的I和Q信号上变频成基带信号，其中将滤波的I和Q信号的中心频率置于基带中，并将滤波的I和Q信号的导频分量的频率移位到0; e）将上变频的I和Q信号相加，将信号恢复成基带信号进行广播。

公开(公告)号：US08681847B2

公开(公告)日：2014-03-25

申请号：US13057164

申请日：2008-11-28

申请人： Jae-Hyun Seo ,  Heung-Mook Kim ,  Soo-In Lee

发明人： Jae-Hyun Seo ,  Heung-Mook Kim ,  Soo-In Lee

IPC分类号： H03H7/30 ,  H03H7/40 ,  H03K5/159

CPC分类号： H04L27/261 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/03159 ,  H04L27/2647 ,  H04L27/2657 ,  H04L27/2662 ,  H04L2025/03414

摘要： Provided is a channel equalizing apparatus and method for improving channel equalization performance in an Orthogonal Frequency Division Multiplexing (OFDM) reception system applied to digital broadcasting or a communication system. The apparatus, includes: a channel estimating unit for performing channel estimation by using a pilot signal of a frequency domain; a digital filtering unit for changing a characteristic of a channel in a time domain based on an estimated channel estimation result; and a channel equalizing unit for performing channel equalization of a frequency domain on the signal after changing the channel characteristic.

摘要翻译： 提供了一种用于改善应用于数字广播或通信系统的正交频分复用（OFDM）接收系统中的信道均衡性能的信道均衡装置和方法。 该装置包括：信道估计单元，用于通过使用频域的导频信号进行信道估计; 数字滤波单元，用于基于估计的信道估计结果来改变时域中的信道的特性; 以及信道均衡单元，用于在改变信道特性之后对信号进行频域的信道均衡。

公开(公告)号：US08638860B2

公开(公告)日：2014-01-28

申请号：US11575242

申请日：2005-09-15

申请人： Sung-Hoon Kim ,  Kum-Ran Ji ,  Jae-Young Lee ,  Seung-Won Kim ,  Soo-In Lee ,  Chieteuk Ahn

发明人： Sung-Hoon Kim ,  Kum-Ran Ji ,  Jae-Young Lee ,  Seung-Won Kim ,  Soo-In Lee ,  Chieteuk Ahn

IPC分类号： H04N7/12 ,  H04N11/02 ,  H04N11/04

CPC分类号： H04N21/2383 ,  H04N19/61 ,  H04N21/4382

摘要： Provided is a Vestigial Side Band Digital Television (DTV) transmitter/receiver based on Advanced Television System Committee A/53. The invention provides DTV transmitter/receiver having a dual stream structure through generation of robust data which has a transmission rate a fourth as fast as that of normal data, and a method thereof. The DTV transmitter includes: input means for receiving digital video data stream including normal and robust data; encoding means for performing ¼ rate coding on the digital video data stream so that one bit can be transmitted through two symbols; and transmitting means for modulating/transmitting output signals of the encoding means. This invention can reduce SNR and satisfy TOV of robust data by performing additional FEC on robust data, transmitting/receiving ¼ rate coded robust data, which are capable of transmitting one-bit data for two symbols, and improving decoding ability of an equalizer and a trellis decoder of a DTV receiver.

摘要翻译： 提供了基于先进电视系统委员会A / 53的残留边带数字电视（DTV）发射机/接收机。 本发明提供具有双流结构的DTV发射机/接收机及其方法，该DTV发射机/接收机通过生成具有与正常数据相同的速度的传输速率的鲁棒数据。 DTV发射机包括：用于接收包括正常和鲁棒数据的数字视频数据流的输入装置; 编码装置，用于对数字视频数据流执行¼速率编码，使得可以通过两个符号发送一个比特; 以及发送装置，用于调制/发送编码装置的输出信号。 本发明可以通过对鲁棒数据，发送/接收速率编码的鲁棒数据执行额外的FEC来降低SNR并满足鲁棒数据的TOV，该数据能够传送两个符号的一位数据，提高均衡器的解码能力和 网格解码器的DTV接收机。

公开(公告)号：US08483269B2

公开(公告)日：2013-07-09

申请号：US12096198

申请日：2006-12-11

申请人： Sung-Hoon Kim ,  Byung-Jun Bae ,  Kug-Jin Yun ,  Jae-Young Lee ,  Seung-Won Kim ,  Chung-Hyun Ahn ,  Nam-Ho Hur ,  Soo-In Lee ,  Chieteuk Ahn

发明人： Sung-Hoon Kim ,  Byung-Jun Bae ,  Kug-Jin Yun ,  Jae-Young Lee ,  Seung-Won Kim ,  Chung-Hyun Ahn ,  Nam-Ho Hur ,  Soo-In Lee ,  Chieteuk Ahn

IPC分类号： H04N7/12

CPC分类号： H04N13/161 ,  H04H20/30 ,  H04H20/95 ,  H04N13/194 ,  H04N19/597 ,  H04N21/235 ,  H04N21/23614 ,  H04N21/2362 ,  H04N21/2365 ,  H04N21/4347 ,  H04N21/4348 ,  H04N21/435 ,  H04N21/845

摘要： Provided is a system and method for transmitting and receiving 3D video based on digital broadcasting. The system includes: an encoder for generating 2D ES and 3D supplementary ES by encoding 2D video and 3D supplementary data; a packetizer for generating 2D video PES and 3D supplementary PES by packetizing the 2D video ES and the 3D supplementary ES; a PSI generator for generating a PSI; a TS generator for generating 2D video TS and 3D supplementary TS for the 2D video PES and the 3D supplementary PES; a multiplexer for multiplexing the transport streams to transmit the 2D video TS as a normal stream and transmit the 3D supplementary TS, the PSI TS and 3D video synch data TS as robust stream; and a modulator for modulating the multiplexed TS according to a DTV specification and transmitting the modulated TS.

摘要翻译： 提供了一种用于基于数字广播发送和接收3D视频的系统和方法。 该系统包括：通过编码2D视频和3D补充数据生成2D ES和3D补充ES的编码器; 用于通过打包2D视频ES和3D补充ES来生成2D视频PES和3D补充PES的打包器; 用于产生PSI的PSI发生器; 用于生成用于2D视频PES和3D补充PES的2D视频TS和3D辅助TS的TS生成器; 多路复用器，用于复用传输流以将2D视频TS作为普通流传输，并将3D补充TS，PSI TS和3D视频同步数据TS作为鲁棒流传输; 以及调制器，用于根据DTV规范调制多路复用的TS，并发送调制的TS。

公开(公告)号：US08180005B2

公开(公告)日：2012-05-15

申请号：US12096641

申请日：2006-11-07

申请人： Ju-Yeun Kim ,  Young-Su Kim ,  Jae-Hwui Bae ,  Hyun Lee ,  Jong-Soo Lim ,  Soo-In Lee

发明人： Ju-Yeun Kim ,  Young-Su Kim ,  Jae-Hwui Bae ,  Hyun Lee ,  Jong-Soo Lim ,  Soo-In Lee

IPC分类号： H04B7/10

CPC分类号： H04B7/0814 ,  H04L25/03012 ,  H04L2025/03426 ,  H04L2025/03535

摘要： Provided are an apparatus and method for selecting an optimal signal using auxiliary equalization in a diversity receiver. The optimal signal selecting apparatus includes: a plurality of sync recovery units for extracting sync information from baseband signals, which are candidate signals, except a baseband signal selected as a current optimal signal a plurality of auxiliary equalizers for channel-equalizing the candidate signals based on the extracted sync information; a plurality of SNR measuring units for measuring signal-to-noise ratios (SNRs) of the candidate signals inputted to the auxiliary equalizers and the candidates signals equalized in the auxiliary equalizers; and an optimal signal selector for selecting an optimal candidate signal from the candidate signals by using the extracted sync information and the measured SNRs, and replacing the optimal signal with the optimal candidate signal when reception quality of the current optimal signal is poor.

摘要翻译： 提供了一种用于在分集接收机中使用辅助均衡来选择最佳信号的装置和方法。 最佳信号选择装置包括：多个同步恢复单元，用于从作为候选信号的基带信号中提取同步信息，除了选择为当前最优信号的基带信号，多个辅助均衡器，用于对候选信号进行信道均衡，基于 提取的同步信息; 多个SNR测量单元，用于测量输入到辅助均衡器的候选信号的信噪比（SNR）和在辅助均衡器中均衡的候选信号; 以及最优信号选择器，用于通过使用所提取的同步信息和测量的SNR从候选信号中选择最佳候选信号，并且当当前最佳信号的接收质量差时，用最佳候选信号替换最佳信号。

公开(公告)号：US20110268193A1

公开(公告)日：2011-11-03

申请号：US12681421

申请日：2008-09-29

申请人： Suk-Hee Cho ,  Namho Hur ,  Jin-Woong Kim ,  Soo-In Lee

发明人： Suk-Hee Cho ,  Namho Hur ,  Jin-Woong Kim ,  Soo-In Lee

IPC分类号： H04N7/26 ,  H04N7/30

CPC分类号： H04N19/59 ,  H04N19/122 ,  H04N19/51 ,  H04N19/597 ,  H04N19/70

摘要： Provided are encoding and decoding methods for a single-view video or a multi-view video and apparatuses thereof. The multi-view encoding method includes performing motion and disparity estimation based on a base image, a supplementary image, and a reference image, generating residual data using the reference image and the motion and disparity estimated data, down sampling the residual data, and transforming and quantizing the down sampled residual data using a discrete cosine transformation (DCT) method.

摘要翻译： 提供了用于单视图视频或多视图视频的编码和解码方法及其装置。 多视图编码方法包括基于基本图像，补充图像和参考图像来执行运动和视差估计，使用参考图像和运动和视差估计数据生成残差数据，对剩余数据进行下采样，以及转换 并使用离散余弦变换（DCT）方法量化下采样残差数据。

公开(公告)号：US20110241743A1

公开(公告)日：2011-10-06

申请号：US13133382

申请日：2009-12-08

申请人： Ho-Min Eum ,  Heung-Mook Kim ,  Soo-In Lee

发明人： Ho-Min Eum ,  Heung-Mook Kim ,  Soo-In Lee

IPC分类号： H03L7/00

CPC分类号： H04L7/02

摘要： Provided are an apparatus and method for synchronizing a timing clock between a transmission signal and a reception signal. The apparatus for synchronizing a timing clock includes a timing restorer configured to restore a timing clock based on a digital input data; and a timing clock synchronizer configured to synchronize the timing clock based on timing information and a timing restoration signal restored in the timing restorer.

摘要翻译： 提供了一种用于在发送信号和接收信号之间同步定时时钟的装置和方法。 用于同步定时时钟的装置包括定时恢复器，其被配置为基于数字输入数据恢复定时时钟; 以及定时时钟同步器，被配置为基于定时信息和在定时恢复器中恢复的定时恢复信号同步定时时钟。