公开(公告)号：US08411801B2

公开(公告)日：2013-04-02

申请号：US12676883

申请日：2008-05-06

申请人： Sung-Ik Park ,  Heung-Mook Kim ,  So-Ra Park ,  Yong-Tae Lee ,  Jong-Soo Lim ,  Soo-In Lee

发明人： Sung-Ik Park ,  Heung-Mook Kim ,  So-Ra Park ,  Yong-Tae Lee ,  Jong-Soo Lim ,  Soo-In Lee

IPC分类号： H04L27/06 ,  H04B1/10

CPC分类号： H04L25/0212 ,  H04B7/155 ,  H04L25/022 ,  H04L25/0224 ,  H04L25/0228 ,  H04L25/0246

摘要： Provided is an apparatus and method for estimating inverse channel of a repeater's receiving channel, which ensures stability and causality by generating a time-domain filter coefficient having information on an inverse channel of repeater's receiving channel from a signal transmitted from a main transmitter or another repeater. The apparatus includes: a channel estimator for estimating a channel established by a transmission path from a received signal; an inverse minimum phase filter coefficient generator for generating inverse channel of a minimum phase channel from the estimated channel, and converting the inverse channel of the minimum phase channel into a time-domain filter coefficient; an inverse group delay filter coefficient generator for generating a time-domain filter coefficient by using the estimated channel and the minimum phase channel; and a combiner for generating an inverse channel of a receiving channel in a time domain by combining the filter coefficient and the filter coefficient.

摘要翻译： 提供了一种用于估计中继器的接收信道的反向信道的装置和方法，其通过从从主发射机或另一个中继器发送的信号生成具有关于中继器的接收信道的反向信道的信息的时域滤波器系数来确保稳定性和因果关系 。 该装置包括：信道估计器，用于从接收信号估计由传输路径建立的信道; 反相最小相位滤波器系数发生器，用于从估计的信道产生最小相位信道的反向信道，并将最小相位信道的反向信道转换为时域滤波器系数; 逆群延迟滤波器系数发生器，用于通过使用估计信道和最小相位信道来产生时域滤波器系数; 以及组合器，用于通过组合滤波器系数和滤波器系数来在时域中产生接收信道的反向信道。

公开(公告)号：US08401040B2

公开(公告)日：2013-03-19

申请号：US11299214

申请日：2005-12-08

申请人： Woong-Shik You ,  Joon-Young Jung ,  Yong-Seong Cho ,  Han-Seung Koo ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Woong-Shik You ,  Joon-Young Jung ,  Yong-Seong Cho ,  Han-Seung Koo ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04H20/28

CPC分类号： H04L12/2801 ,  H04L12/2854

摘要： Provided is apparatus and method for transforming cable channel. The apparatus includes a data mixing unit for receiving and mixing a band data and a first broadband data, to thereby generate a second broadband data of a broadband cable channel, and a channel adapting unit for dividing a band data from the second broadband data received through the broadband cable channel, bypassing the second broadband data to a first subscriber apparatus and transmitting the band data to a second subscriber apparatus.

摘要翻译： 提供了用于转换有线电视频道的装置和方法。 该装置包括：数据混合单元，用于接收和混合频带数据和第一宽带数据，从而产生宽带有线频道的第二宽带数据;以及信道适配单元，用于将频带数据与从第 宽带电缆信道，绕过第二宽带数据到第一用户设备，并将频带数据发送到第二用户设备。

公开(公告)号：US08170470B2

公开(公告)日：2012-05-01

申请号：US12669815

申请日：2007-11-09

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

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

IPC分类号： H04B3/36 ,  H04B17/02 ,  H04B7/15 ,  H04B7/14

CPC分类号： H04B7/15585 ,  H04B1/525

摘要： Provided are an on-channel repeater for repeating an output signal the same as an input signal on channel by removing feedback signals caused by low isolation of a transmission/reception antenna by converting a transmitted Radio Frequency (RF) signal into a signal of a predetermined band and subtracting a replica of the feedback signal from the converted signal, and by compensating for channel distortion of a reception signal by estimating an inverse of reception channel from a signal acquired by removing the feedback signal, and an on-channel repeating method.

摘要翻译： 提供一种同信道中继器，用于通过将发送的射频（RF）信号转换为预定的信号的信号，通过消除由发送/接收天线的低隔离引起的反馈信号来重复与信道上的输入信号相同的输出信号 并且从经转换的信号中减去反馈信号的副本，并且通过从通过去除反馈信号获取的信号估计接收信道的反向来补偿接收信号的信道失真，以及通道重复方法。

公开(公告)号：US08077791B2

公开(公告)日：2011-12-13

申请号：US11995274

申请日：2006-07-11

申请人： Sung-Hoon Kim ,  Jae-Young Lee ,  Seung-Won Kim ,  Soo-In Lee ,  Chieteuk Ahn ,  Ho-Kyoung Lee ,  Chang-Joong Kim

发明人： Sung-Hoon Kim ,  Jae-Young Lee ,  Seung-Won Kim ,  Soo-In Lee ,  Chieteuk Ahn ,  Ho-Kyoung Lee ,  Chang-Joong Kim

IPC分类号： H04L23/02

CPC分类号： H03M13/39

摘要： Provided is a method for searching for an optimal coder suitable to a dual stream transmission method of a DTV transceiving apparatus, and an encoder and a decoder employing the optimal coder searching method. The optimal coder searching method includes the steps of: a) determining a mixed pattern of normal stream and robust stream; b) determining a trellis structure of the robust stream which is applied to the mixed pattern based on how coders are connected; c) forming a dual stream trellis by mixing a trellis of the normal stream, which is a normal stream trellis, and a trellis of the robust stream, which is a robust stream trellis; d) computing a free distance at departing points of the dual stream trellis structure based on a dual stream free distance computation termination condition; and e) determining the optimal coder based on the free distance.

摘要翻译： 提供了一种用于搜索适合DTV收发装置的双流传输方法的最佳编码器的方法，以及采用最佳编码器搜索方法的编码器和解码器。 最优编码器搜索方法包括以下步骤：a）确定正常流和鲁棒流的混合模式; b）基于编码器如何连接来确定施加到混合模式的鲁棒流的网格结构; c）通过混合作为正常流网格的正常流的网格和作为鲁棒流网格的鲁棒流的网格来形成双流网格; d）基于双流自由距离计算终止条件在双流网格结构的离开点处计算自由距离; 以及e）基于所述自由距离来确定所述最佳编码器。

公开(公告)号：US07856590B2

公开(公告)日：2010-12-21

申请号：US10594464

申请日：2005-04-01

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： H03M13/03

CPC分类号： H03M13/256 ,  H03M13/253 ,  H03M13/2732 ,  H03M13/2936 ,  H03M13/356 ,  H04L1/006 ,  H04L1/007 ,  H04L1/0071

摘要： Provided are a Vestigial Side Band (VSB) Digital Television (DTV) transmitter and receiver based on the Advanced Television System Committee (ATSC) A/53, and a method thereof. The present invention provides 8-VSB DTV transmitter and receiver that can improve reception performance of the receiver by transmitting and double streams formed of normal data and robust data without increasing an average power level, regardless of the ratio of the normal data and robust data, by including an encoding unit for performing 16-state trellis coding on the robust data when a data stream includes robust data, and a method thereof.

摘要翻译： 提供了基于高级电视系统委员会（ATSC）A / 53的残留边带（VSB）数字电视（DTV）发射机和接收机及其方法。 本发明提供8-VSB数字电视发射机和接收机，无论普通数据和鲁棒数据的比例如何，都可以通过发送和正常数据和鲁棒数据形成的双流来提高接收机的接收性能，而不增加平均功率电平， 通过在数据流包含鲁棒数据时，包括用于对鲁棒数据执行16状态网格编码的编码单元及其方法。

公开(公告)号：US20100311323A1

公开(公告)日：2010-12-09

申请号：US12599457

申请日：2007-11-09

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

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

IPC分类号： H04B17/02

CPC分类号： H04B7/15585

摘要： Provided are an on-channel repeater and an on-channel repeating method. The on-channel repeater includes: a receiving means for receiving a Radio Frequency (RF) signal; a subtracting means for subtracting a replica of feedback signals from the signal received by the receiving means; a replica generating means for calculating the replica based on the signal acquired from the subtraction in the subtracting means and feeding back the replica to the subtracting means; an inverse channel estimating means for estimating inverse of a reception channel based on the signal acquired from the subtraction in the subtracting means and generating filter tab coefficients; a first adaptive filtering means for compensating for channel distortion of the signal subtracted by the subtracting means based on the filter tab coefficients generated in the inverse channel estimating means; and a transmitting means for converting a signal whose channel distortion is compensated by the first adaptive filtering means into an RF signal and performing radio transmission.

摘要翻译： 提供了一个通道内中继器和一个通道间重复方法。 所述同频中继器包括：接收装置，用于接收射频（RF）信号; 减法装置，用于从接收装置接收的信号中减去反馈信号的副本; 复制产生装置，用于基于从减法装置中减法获得的信号计算副本，并将副本反馈给减法装置; 反向信道估计装置，用于基于从减法装置中的减法获得的信号估计接收信道的反向，并产生滤波器标签系数; 第一自适应滤波装置，用于基于在反向信道估计装置中产生的滤波器选项卡系数来补偿由减法装置减去的信号的信道失真; 以及发送装置，用于将由第一自适应滤波装置补偿的信道失真的信号转换为RF信号并执行无线电发送。

公开(公告)号：US07782937B2

公开(公告)日：2010-08-24

申请号：US10553667

申请日：2004-04-14

申请人： Kug-Jin Yun ,  Suk-Hee Cho ,  Chung-Hyun Ahn ,  Soo-In Lee

发明人： Kug-Jin Yun ,  Suk-Hee Cho ,  Chung-Hyun Ahn ,  Soo-In Lee

IPC分类号： H04N7/12

CPC分类号： H04N7/17318 ,  H04N13/161 ,  H04N13/178 ,  H04N13/194 ,  H04N19/132 ,  H04N19/162 ,  H04N19/187 ,  H04N19/25 ,  H04N19/31 ,  H04N19/33 ,  H04N19/597 ,  H04N21/2181 ,  H04N21/234318 ,  H04N21/234327 ,  H04N21/23439 ,  H04N21/2365 ,  H04N21/2368 ,  H04N21/4341 ,  H04N21/4347 ,  H04N21/6125 ,  H04N21/6175 ,  H04N21/6437 ,  H04N21/6581 ,  H04N21/816 ,  H04N21/85406

摘要： Provided is a system and method for broadcasting stereoscopic video data to users on the Internet based on Moving Picture Experts Group (MPEG)-4. The system includes: an encoding server for receiving stereoscopic video data, audio data, and Object Descriptor/Binary Format for Scene (OD/BIFS), which is information for controlling a content, and encoding the data into elementary stream (ES) having an MPEG-4 structure; a web server for receiving from the client any one among two-dimensional video display mode, field-shuttering video display mode and frame-shuttering video display mode; and a streaming server for generating a RTP (RTP) packet for real-time data transmission on the Internet by multiplexing the ES based on the display mode inputted into the web server, and transmitting the RTP packet to the client.

摘要翻译： 提供了一种基于运动图像专家组（MPEG）-4在互联网上向用户广播立体视频数据的系统和方法。 该系统包括：用于接收立体视频数据，音频数据和用于场景的对象描述符/二进制格式（OD / BIFS）的编码服务器，其是用于控制内容的信息，并且将数据编码为具有 MPEG-4结构; 用于从客户端接收二维视频显示模式，场快门视频显示模式和帧快门视频显示模式之一的网络服务器; 以及流式传输服务器，用于通过基于输入到web服务器的显示模式复用ES来生成用于在因特网上实时数据传输的RTP（RTP）分组，并将RTP分组发送给客户端。

公开(公告)号：US07773665B2

公开(公告)日：2010-08-10

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： H04L25/60 ,  H03D3/24

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：US07739518B2

公开(公告)日：2010-06-15

申请号：US11483999

申请日：2006-07-10

申请人： Han-Seung Koo ,  Joon-Young Jung ,  Eun-Jung Kwon ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Han-Seung Koo ,  Joon-Young Jung ,  Eun-Jung Kwon ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： G06F11/30 ,  G06F12/14

CPC分类号： G06F21/575 ,  H04L63/1441

摘要： Provided is a method for securing cable modem (CM) following a Data Over Cable Service Interface Specification (DOCSIS) against physical security attacks. The method includes the steps of: a) classifying information to be stored in the DOCSIS CM based on a requirement degree of confidentiality and anti-alteration; b) storing the information in a non-volatile memory of the DOCSIS CM when the information is absolute confidential information, but processing a mechanism for deleting the information stored in the non-volatile memory in case that attacks by a hacker is sensed; c) storing the information in the non-volatile memory of the DOCSIS CM when the information is middle-level security information; and d) storing the information in a write-once (WO) memory of the DOCSIS CM when the information is absolute anti-alteration information.

摘要翻译： 提供了一种用于保护电缆调制解调器（CM）的方法，该电缆调制解调器（CM）遵循电缆数据服务接口规范（DOCSIS），防止物理安全攻击。 该方法包括以下步骤：a）根据需要的机密性和抗变形度对DOCSIS CM中存储的信息进行分类; b）当信息是绝对机密信息时，将信息存储在DOCSIS CM的非易失性存储器中，但是在感测到黑客的攻击的情况下处理用于删除存储在非易失性存储器中的信息的机制; c）当信息是中级安全信息时，将信息存储在DOCSIS CM的非易失性存储器中; 以及d）当所述信息是绝对抗变换信息时，将信息存储在DOCSIS CM的一次写入（WO）存储器中。

公开(公告)号：US07738478B2

公开(公告)日：2010-06-15

申请号：US11644211

申请日：2006-12-22

申请人： Seung-Eun Hong ,  Ho-Jin Kwon ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Seung-Eun Hong ,  Ho-Jin Kwon ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04L12/28 ,  G01R31/08

CPC分类号： H04L12/2801 ,  H04L41/12

摘要： An apparatus for determining a downstream topology in a hybrid-fiber-coaxial network includes: a signal branching unit for branching a signal received from a cable modem termination system into a plurality of branched signals; a plurality of signal selecting units for selectively receiving a frequency band signal corresponding to a specific downstream channel among the plurality of branched signals; a downstream topology determining unit for analyzing a downstream ambiguity resolution frequency list contained in a channel information message of a downstream primary channel received from the cable modem termination system, collecting in parallel channel information messages with respect to a plurality of downstream channels, and determining a downstream topology at a high speed using the collected channel information messages; and a plurality of packet generating units for setting downstream channel frequency bands of the signal selecting units under control of the downstream topology determining unit, and sending the channel information messages of the collected downstream channels to the downstream topology determining unit.

摘要翻译： 一种用于确定混合光纤同轴网络中的下游拓扑的装置包括：信号分支单元，用于将从电缆调制解调器终端系统接收的信号分支为多个分支信号; 多个信号选择单元，用于选择性地接收与所述多个分支信号中的特定下游信道相对应的频带信号; 用于分析包含在从所述电缆调制解调器终端系统接收的下游主信道的信道信息消息中的下游模糊度分辨率频率列表的下游拓扑确定单元，针对多个下行信道并行收集信道信息消息，并且确定 使用收集的信道信息消息高速下行拓扑; 以及多个分组产生单元，用于在所述下游拓扑确定单元的控制下设置所述信号选择单元的下行信道频带，并将所收集的下行信道的信道信息消息发送到所述下游拓扑确定单元。