公开(公告)号：US20080056292A1

公开(公告)日：2008-03-06

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

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。

公开(公告)号：US20070133667A1

公开(公告)日：2007-06-14

申请号：US11635721

申请日：2006-12-07

申请人： Eun-Seok Jin ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Eun-Seok Jin ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04B3/46 ,  G01R29/26

CPC分类号： H04B3/462 ,  H04H40/18 ,  H04L7/0004 ,  H04L7/033

摘要： A timing lock detection apparatus and method for digital broadcasting receiver are provided. The apparatus includes: a discrete value generator for cyclically selecting a discrete signal value from a continuous timing error signal; a differential calculator for obtaining a difference between the currently selected timing error signal value and a previously selected timing error signal that is a timing jitter signal; a sign variation detector for detecting variation in a sign of the timing jitter signal; a lock control signal generator for discriminating a period based on the detected sign changing time, and controlling a lock step of the loop filter according to a convergence mode of the timing jitter signal at each period; and a lock detection signal generator for generating a lock signal or an unlock signal according to whether the timing jitter signal reaches a steady state and using the current lock step signal.

摘要翻译： 提供了一种用于数字广播接收机的定时锁定检测装置和方法。 该装置包括：离散值发生器，用于从连续定时误差信号周期性地选择离散信号值; 用于获得当前选择的定时误差信号值与作为定时抖动信号的先前选择的定时误差信号之间的差的差分计算器; 用于检测定时抖动信号的符号变化的符号变化检测器; 锁定控制信号发生器，用于基于检测到的符号变化时间来识别周期，并且根据每个周期的定时抖动信号的收敛模式来控制环路滤波器的锁定步骤; 以及锁定检测信号发生器，用于根据定时抖动信号是否达到稳定状态并使用当前锁定步骤信号产生锁定信号或解锁信号。

公开(公告)号：US20070058680A1

公开(公告)日：2007-03-15

申请号：US11493418

申请日：2006-07-26

申请人： Dong-Joon Choi ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Dong-Joon Choi ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04J1/00

CPC分类号： H04N7/17309 ,  H04H20/79 ,  H04H60/97 ,  H04L12/2801 ,  H04N21/4363 ,  H04N21/4381 ,  H04N21/6118

摘要： Provided are an apparatus and a method for multimedia data transmission in a cable network using a broadband and physical layer frame structure. The apparatus includes an external network matching module for transmitting data inputted/outputted from/to an external network to a Data Over Cable Service Interface Specification (DOCSIS) Media Access Control (MAC) layer, a DOCSIS MAC processor for transmitting the data from the external network matching module to a corresponding destination, a first downstream physical layer processor for handling an existing standard transmission in the data from the DOCSIS MAC processor, a second downstream physical layer processor for dealing with a new broadband transmission in the data from the DOCSIS MAC processor, and an upstream physical layer processor for providing received data to the DOCSIS MAC processor.

摘要翻译： 提供了一种使用宽带和物理层帧结构在有线网络中进行多媒体数据传输的装置和方法。 该装置包括外部网络匹配模块，用于将从外部网络输入/输出的数据发送到数据有线服务接口规范（DOCSIS）媒体访问控制（MAC）层，用于从外部传送数据的DOCSIS MAC处理器 网络匹配模块到相应的目的地，用于处理来自DOCSIS MAC处理器的数据中的现有标准传输的第一下游物理层处理器，用于处理来自DOCSIS MAC处理器的数据中的新的宽带传输的第二下游物理层处理器 以及用于向DOCSIS MAC处理器提供接收的数据的上游物理层处理器。

公开(公告)号：US07944964B2

公开(公告)日：2011-05-17

申请号：US11634495

申请日：2006-12-06

申请人： Jae-Ho Lee ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Jae-Ho Lee ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H03H7/30

CPC分类号： H04L25/0307 ,  H04L2025/0349 ,  H04L2025/0363 ,  H04L2025/03656 ,  H04L2025/03687 ,  H04L2025/037

摘要： A decision feedback equalizing apparatus selectively using a feedback filter and a method thereof are provided. The apparatus includes: an equalizing unit including a feed forward filter (FFF) for correcting a distorted transmission channel by receiving a match-filtered signal and a feedback filter (FBF) for reducing inter symbol interference ISI of the corrected transmission channel for driving only the FFF in a blind mode and driving the FFF and the FBF in a decision directed mode; a diverge/converge determining unit for determining whether the decision feedback equalizing apparatus is diverged or converged using a unit square error obtained through a least unit square algorithm; and a filter controlling unit for controlling the equalizing unit in a blind mode if the decision feedback equalizing apparatus is determined as divergence, and for controlling the equalizing unit in a decision directed mode if the decision feedback equalizing apparatus is determined as convergence.

摘要翻译： 提供了选择性地使用反馈滤波器的判定反馈均衡装置及其方法。 该装置包括：均衡单元，包括用于通过接收匹配滤波信号来校正失真传输信道的前馈滤波器（FFF）和用于减少仅用于驱动的​​纠错传输信道的符号间干扰ISI的反馈滤波器（FBF） FFF处于盲模式，并以决策导向模式驱动FFF和FBF; 分散/收敛确定单元，用于使用通过最小单位平方算法获得的单位平方误差来确定判定反馈均衡装置是否发散或收敛; 以及滤波器控制单元，如果判定反馈均衡装置被确定为发散，则以盲模式控制均衡单元，并且如果判定反馈均衡装置被确定为收敛则用于以判决指导模式控制均衡单元。

公开(公告)号：US07933322B2

公开(公告)日：2011-04-26

申请号：US11635721

申请日：2006-12-07

申请人： Eun-Seok Jin ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Eun-Seok Jin ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04B3/46

CPC分类号： H04B3/462 ,  H04H40/18 ,  H04L7/0004 ,  H04L7/033

摘要： A timing lock detection apparatus and method for digital broadcasting receiver are provided. The apparatus includes: a discrete value generator for cyclically selecting a discrete signal value from a continuous timing error signal; a differential calculator for obtaining a difference between the currently selected timing error signal value and a previously selected timing error signal that is a timing jitter signal; a sign variation detector for detecting variation in a sign of the timing jitter signal; a lock control signal generator for discriminating a period based on the detected sign changing time, and controlling a lock step of the loop filter according to a convergence mode of the timing jitter signal at each period; and a lock detection signal generator for generating a lock signal or an unlock signal according to whether the timing jitter signal reaches a steady state and using the current lock step signal.

摘要翻译： 提供了一种用于数字广播接收机的定时锁定检测装置和方法。 该装置包括：离散值发生器，用于从连续定时误差信号周期性地选择离散信号值; 用于获得当前选择的定时误差信号值与作为定时抖动信号的先前选择的定时误差信号之间的差的差分计算器; 用于检测所述定时抖动信号的符号的变化的符号变化检测器; 锁定控制信号发生器，用于基于检测到的符号变化时间来识别周期，并且根据每个周期的定时抖动信号的收敛模式来控制环路滤波器的锁定步骤; 以及锁定检测信号发生器，用于根据定时抖动信号是否达到稳定状态并使用当前锁定步骤信号产生锁定信号或解锁信号。

公开(公告)号：US07669224B2

公开(公告)日：2010-02-23

申请号：US11630160

申请日：2004-12-30

申请人： Han-Seung Koo ,  O-Hyung Kwon ,  Woongshik You ,  Soo-in Lee

发明人： Han-Seung Koo ,  O-Hyung Kwon ,  Woongshik You ,  Soo-in Lee

IPC分类号： H04N7/22

CPC分类号： H04H20/69 ,  H04H60/97 ,  H04J14/0298 ,  H04N7/10 ,  H04N7/17309 ,  H04N7/22 ,  H04N21/4402 ,  H04N21/6118

摘要： Provided is an outdoor optical node unit (ONU) and method for converting/combining frequencies, and an apparatus and method for converting/combining frequencies in a cable television headend system. The optical node unit (ONU) includes: a downstream optic-to-electric converting unit for converting a downstream optic signal transferred through an optical cable network from a headend system to a downstream electric signal; a down frequency converting and combining unit for isolating the downstream electric signal to a broadcasting signal transmitted as a coaxial cable usable frequency band (In-Band signal) and a band signal higher than the coaxial cable usable frequency band (Super-Band (SB) signal), isolating each of channel signals in the SB signal, converting the isolated channel signals to downstream signals in a coaxial cable usable frequency band, and combining each of the frequency-converted downstream signals with the In-Band signal to generate a coaxial cable usable frequency band downstream signal; an up/down band isolating unit for outputting each of the coaxial cable usable frequency band downstream signals inputted from the down frequency converting and combining unit to a corresponding coaxial cable, or dividing an upstream signal transferred through a coaxial cable from each of subscriber's sub cells to a cable TV upstream frequency band signal and In-Band upstream channel band signal (IUC band signal) which is other upstream channel in a coaxial cable usable frequency band excepting the cable TV upstream frequency band, and outputting the cable TV upstream frequency band signal and the IUC band signal to an upstream frequency converting and combining unit; an upstream frequency converting and combining unit for converting the upstream signals which are the cable TV upstream frequency band signal and the IUC band signal inputted from the up/down band isolating unit to channels not overlapped in the coaxial cable usable frequency band, combining the converted channel signals to generate a coaxial cable usable frequency band upstream electric signal; an up electric-to-optic converting unit for receiving the optical cable usable frequency band upstream electric signal, converting the optical cable usable frequency band upstream electric signal to an upstream optical signal, and outputting the upstream optical signal to the headend system through an optical cable network; and a local oscillating unit for generating local oscillating signal for frequency-conversion, and providing the generated local oscillating signal to the down frequency converting and combining unit or the up frequency converting and combining unit.

公开(公告)号：US20070133672A1

公开(公告)日：2007-06-14

申请号：US11634495

申请日：2006-12-06

申请人： Jae-Ho Lee ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Jae-Ho Lee ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H03H7/30

CPC分类号： H04L25/0307 ,  H04L2025/0349 ,  H04L2025/0363 ,  H04L2025/03656 ,  H04L2025/03687 ,  H04L2025/037

摘要： A decision feedback equalizing apparatus selectively using a feedback filter and a method thereof are provided. The apparatus includes: an equalizing unit including a feed forward filter (FFF) for correcting a distorted transmission channel by receiving a match-filtered signal and a feedback filter (FBF) for reducing inter symbol interference ISI of the corrected transmission channel for driving only the FFF in a blind mode and driving the FFF and the FBF in a decision directed mode; a diverge/converge determining unit for determining whether the decision feedback equalizing apparatus is diverged or converged using a unit square error obtained through a least unit square algorithm; and a filter controlling unit for controlling the equalizing unit in a blind mode if the decision feedback equalizing apparatus is determined as divergence, and for controlling the equalizing unit in a decision directed mode if the decision feedback equalizing apparatus is determined as convergence.

摘要翻译： 提供了选择性地使用反馈滤波器的判定反馈均衡装置及其方法。 该装置包括：均衡单元，包括用于通过接收匹配滤波信号来校正失真传输信道的前馈滤波器（FFF）和用于减少仅用于驱动的​​纠错传输信道的符号间干扰ISI的反馈滤波器（FBF） FFF处于盲模式，并以决策导向模式驱动FFF和FBF; 分散/收敛确定单元，用于使用通过最小单位平方算法获得的单位平方误差来确定判定反馈均衡装置是否发散或收敛; 以及滤波器控制单元，如果判定反馈均衡装置被确定为发散，则以盲模式控制均衡单元，并且如果判定反馈均衡装置被确定为收敛则用于以判决指导模式控制均衡单元。

公开(公告)号：US20070124354A1

公开(公告)日：2007-05-31

申请号：US11541213

申请日：2006-09-29

申请人： Eung-Don Lee ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Eung-Don Lee ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： G06F15/00

CPC分类号： G06F1/0353

摘要： A method for composing a lookup table and searching indexes thereof is provided. The method includes the steps of: a) composing a lookup table using a symmetry of a sine and a cosine function; b) changing and setting a gain of a DCO by reflecting a lookup table size in the DCO; c) transforming an absolute value of a DCO output to an integer value; d) determining a range of the integer value of the DCO output; e) searching indexes of a sine and an cosine function according to the range of the integer value of the DCO output; and f) correcting a sign of a lookup table value corresponding to the searched index of the sine function and a sign of a lookup table value corresponding to the searched index of the cosine function according to the range of integers of the DCO output.

摘要翻译： 提供了一种组合查找表和搜索索引的方法。 该方法包括以下步骤：a）使用正弦和余弦函数的对称来构成查找表; b）通过反映DCO中的查找表大小来更改和设置DCO的增益; c）将DCO输出的绝对值转换为整数值; d）确定DCO输出的整数值的范围; e）根据DCO输出的整数值的范围，搜索正弦和余弦函数的索引; 以及f）根据所述DCO输出的整数的范围，校正与搜索到的正弦函数的索引相对应的查找表值的符号和与所搜索的余弦函数的索引相对应的查找表值的符号。

公开(公告)号：US20060130110A1

公开(公告)日：2006-06-15

申请号：US11212153

申请日：2005-08-25

申请人： Yong-Seong Cho ,  Woongshik You ,  O-Hyung Kwon ,  Soo-In Lee

发明人： Yong-Seong Cho ,  Woongshik You ,  O-Hyung Kwon ,  Soo-In Lee

IPC分类号： H04N7/173 ,  H04N7/16

CPC分类号： H04N21/6118 ,  H04L12/66 ,  H04N7/163 ,  H04N21/23614 ,  H04N21/4181 ,  H04N21/42676 ,  H04N21/4344 ,  H04N21/4348 ,  H04N21/436 ,  H04N21/437

摘要： An apparatus for receiving MPEG-2 A/V data by using a cable MODE is disclosed. The apparatus includes: a cable MODEM for separating broadcasting data and broadcasting supplementary data by demodulating an input signal; and a multiplexer for multiplexing the separated broadcasting data from the cable MODEM with broadcasting data inputted from other input source, and outputting the multiplexed broadcasting data to an external cable card.

摘要翻译： 公开了一种通过使用电缆MODE来接收MPEG-2A / V数据的装置。 该装置包括：电缆MODEM，用于通过解调输入信号来分离广播数据和广播补充数据; 以及多路复用器，用于将来自电缆MODEM的分离的广播数据与从其他输入源输入的广播数据进行复用，并将多路复用的广播数据输出到外部有线电视卡。