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21. 发明申请

US20070206708A1 CHANNEL EQUALIZER AND METHOD OF PROCESSING BROADCAST SIGNAL IN RECEIVING SYSTEM 有权
标题翻译：信道均衡器和接收系统中广播信号的处理方法
公开(公告)号：US20070206708A1
公开(公告)日：2007-09-06
申请号：US11681554
申请日：2007-03-02
申请人： Byoung Kim , In Choi , Kook Kwak
发明人： Byoung Kim , In Choi , Kook Kwak
IPC分类号： H04L27/06 , H04B1/10
CPC分类号： H04L25/022 , H04L1/0047 , H04L1/0054 , H04L1/0057 , H04L1/0059 , H04L1/0065 , H04L1/007 , H04L1/0071 , H04L25/03159 , H04L2001/0093 , H04L2025/03522 , H04N7/163 , H04N21/235 , H04N21/2383 , H04N21/4345 , H04N21/435 , H04N21/4382 , H04N21/4623
摘要： A channel equalizer includes an overlap unit, an estimator, a calculator, a compensator, and a save unit. The overlap unit overlaps a group of data packets in a broadcast signal. The group data packets include a head, a body, and a tail, and a known data sequence is periodically included in the body. The estimator estimates a CIR of each data region the body using the known data sequence, and it further estimates CIRs of data regions in the head or tail using the CIRs obtained for the data regions in the body. The calculator calculates equalization coefficients based on the CIRs estimated by the estimator, and the compensator compensates channel distortion of the overlapped data using the equalization coefficients. The save unit saves the compensated data.
摘要翻译：信道均衡器包括重叠单元，估计器，计算器，补偿器和保存单元。重叠单元与广播信号中的一组数据分组重叠。组数据分组包括头，身体和尾巴，并且已知的数据序列被周期地包括在体内。估计器使用已知数据序列估计身体的每个数据区域的CIR，并且还使用为身体中的数据区域获得的CIR来估计头部或尾部中的数据区域的CIR。计算器基于由估计器估计的CIR来计算均衡系数，并且补偿器使用均衡系数来补偿重叠数据的信道失真。保存单元保存补偿数据。

22. 发明申请

US20070230580A1 CHANNEL EQUALIZER AND METHOD OF PROCESSING BROADCAST SIGNAL IN DTV RECEIVING SYSTEM 有权
标题翻译：频道均衡器和数字电视接收系统中处理广播信号的方法
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。

23. 发明申请

US20070058081A1 Channel equalizer and digital television receiver using the same 有权
标题翻译：信道均衡器和数字电视接收机使用相同
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。

24. 发明申请

US20060034362A1 Apparatus for channel equalization using multi antenna and method thereof 有权
标题翻译：用于使用多天线的信道均衡的装置及其方法
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。

25. 发明申请

US20060023799A1 Apparatus for channel equalization and method thereof 有权
标题翻译：信道均衡装置及其方法
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。

26. 发明申请

US20080008473A1 WDM-PON system with optical wavelength alignment function 有权
公开(公告)号：US20080008473A1
公开(公告)日：2008-01-10
申请号：US11824297
申请日：2007-06-29
申请人： Byoung Kim , Jae Park , Hyeong Lee , Jae Yang
发明人： Byoung Kim , Jae Park , Hyeong Lee , Jae Yang
IPC分类号： H04J14/00
CPC分类号： H04J14/02 , G02B6/12004 , G02B6/12007 , G02B6/1228 , G02B6/124 , G02B6/29322 , G02B6/29395 , G02B6/29398 , G02B6/305 , G02B2006/12135 , H04J14/0227 , H04J14/0246 , H04J14/025 , H04J14/0282
摘要： A PLC-based wavelength-tunable WDM-PON system with an optical wavelength alignment function, the WDM-PON system comprises: a PLC platform formed on a silicon substrate; a semiconductor chip comprising an active region generating light and a passive region located in front of the active region for vertically coupling the light generated in the active region; a planar lightwave circuit (PLC) waveguide; one portion of a PLC platform where the semiconductor chip is surface mounted; waveguide Bragg grating (WBG) formed at a predetermined location of the PLC waveguide; a directional coupler transferring an optical power by permitting the passive region to approach the PLC waveguide; a heater terminal, which is formed on the WBG; and a V-groove for attaching an optical fiber to another end of the PLC waveguide. Accordingly, a WDM-PON system having a function of realizing a cost-effective optical wavelength alignment can be provided.

27. 发明申请

US20080002777A1 Video data communication method and apparatus for improving transmission efficiency 有权
标题翻译：用于提高传输效率的视频数据通信方法和装置
公开(公告)号：US20080002777A1
公开(公告)日：2008-01-03
申请号：US11820881
申请日：2007-06-20
申请人： Gyung Hwang , Young Kim , Soo Koo , Young Jung , Byoung Kim
发明人： Gyung Hwang , Young Kim , Soo Koo , Young Jung , Byoung Kim
IPC分类号： H04N11/02
CPC分类号： H04N21/631 , H04N21/234327 , H04N21/2381
摘要： A video data communication method and apparatus for a data communication that enable improving video quality, at a recipient device, and transmission efficiency by transmitting video data using both contention free transmission mechanism and priority-based transmission mechanism are provided. A video data transmission method ion includes dividing video data into different types of slices; assigning different transport priorities to slice types in accordance with importance for recovering, at a recipient device, the video data; and transmitting the slices on the basis of the transport priorities.
摘要翻译：提供了一种用于数据通信的视频数据通信方法和装置，其通过使用无争用传送机制和基于优先级的传输机制发送视频数据，能够在接收方设备改善视频质量和传输效率。视频数据传输方法离子包括将视频数据划分成不同类型的片; 根据在收件人设备处恢复视频数据的重要性，将切片类型分配不同的传输优先级; 以及基于传输优先级来传送片段。

28. 发明申请

US20070183788A1 Feed-forward current injection circuits and semiconductor optical amplifier structures for downstream optical signal reuse method 有权
标题翻译：前馈电流注入电路和下游光信号复用方法的半导体光放大器结构
公开(公告)号：US20070183788A1
公开(公告)日：2007-08-09
申请号：US11651262
申请日：2007-01-09
申请人： Byoung Kim , Mahn Park , Seung Cho , Woo Lee , Jie Lee , Geon Jeong , Chul Kim
发明人： Byoung Kim , Mahn Park , Seung Cho , Woo Lee , Jie Lee , Geon Jeong , Chul Kim
IPC分类号： H04B10/00
CPC分类号： H01S5/50 , H01S5/06812 , H04J14/02 , H04J14/0282
摘要： A reflective semiconductor optical amplifier (RSOA) and an operating system based on a downstream optical signal reuse method with feed-forward current injection are provided. The RSOA has two active regions and includes a reflecting plane that reflects an input optical signal; and an optical amplifying semiconductor including a rear portion, which is positioned at a side of the reflecting plane and to which a signal having polarity opposite to that of the input optical signal is injected, and a front portion, which is positioned at a side opposite to the side of the rear portion facing the reflecting plane and which the input optical signal is passed though and a signal used to modulate a reflected input optical signal from the reflecting plane to an output optical signal is injected into.
摘要翻译：提供反射半导体光放大器（RSOA）和基于具有前馈电流注入的下行光信号重用方法的操作系统。 RSOA具有两个有效区域，并且包括反射输入光信号的反射平面; 以及光学放大半导体，其包括位于反射面的一侧并且具有与输入光信号的极性相反的信号的后部的后部，以及位于相反侧的一侧的前部到后面的面向反射面的一侧，并且输入光信号通过，并且将用于将反射的输入光信号从反射平面调制到输出光信号的信号被注入。

29. 发明申请

US20070147837A1 Method of increasing number of subscribers using time division duplexing technology in wavelength division multiplexing/Ethernet passive optical network system 审中-公开
标题翻译：波分复用/以太网无源光网络系统中使用时分双工技术的用户数量增加的方法
公开(公告)号：US20070147837A1
公开(公告)日：2007-06-28
申请号：US11634507
申请日：2006-12-06
申请人： Jeong Yoo , Byoung Kim , Bokrae Jung , Jaegwan Kim , Namuk Kim , Minho Kang
发明人： Jeong Yoo , Byoung Kim , Bokrae Jung , Jaegwan Kim , Namuk Kim , Minho Kang
IPC分类号： H04J14/00
CPC分类号： H04J14/0226 , H04J3/1694 , H04J14/0227 , H04J14/0246 , H04J14/0247 , H04J14/025 , H04J14/0252 , H04J14/0282 , H04J2014/0253
摘要： Provided is a method of increasing the number of subscribers using a time division duplexing (TDD) technology in a wavelength division multiplexing (WDM)/Ethernet passive optical network (WE-PON) system, and more particularly, a method of increasing the number of subscribers admissible per wavelength using a TDD technology. In an existing WE-PON, due to an amplitude squeezing effect (ASE) in an optical network terminal (ONT) and an optical output power restriction in an optical line terminal (OLT), there is a disadvantage in that 4 or more subscribers cannot be simultaneously accommodated per wavelength. However, the present invention enables accommodation of a maximum of 16 subscribers per wavelength by applying a TDD technology to a medium access control (MAC) protocol. Point-to-multipoint services can be provided without the need of an additional header for classifying upstream and downstream window sizes in a downstream bandwidth used in an existing WDM-PON loopback technique using dynamic band allocation (DBA) applied to a conventional E-PON MAC protocol and scheduling algorithm. In addition, a DBA and threshold adjustment mechanism are provided to compensate for a downstream bandwidth decrease caused by application of the TDD technology.
摘要翻译：提供了一种在波分多路复用（WDM）/以太网无源光网络（WE-PON）系统中增加使用时分复用（TDD）技术的用户数量的方法，更具体地说，用户可以使用TDD技术在每个波长上接受许可。在现有的WE-PON中，由于光网络终端（ONT）中的振幅挤压效应（ASE）和光线路终端（OLT）中的光输出功率限制，存在4个以上用户不能每个波长同时容纳。然而，本发明能够通过将TDD技术应用于媒体接入控制（MAC）协议来容纳每个波长最多16个用户。可以提供点到多点服务，而不需要用于在现有的WDM-PON环回技术中使用的动态频带分配（DBA）中使用的下行带宽中的上行和下行窗口大小进行分类的附加报头，所述动态频带分配（DBA）应用于常规E-PON MAC协议和调度算法。另外，提供DBA和阈值调整机制来补偿由TDD技术的应用引起的下行带宽减少。

30. 发明申请

US20060098697A1 Wavelength tunable light source module for wavelength division multiplexing passive optical network system 审中-公开
标题翻译：波长可调光源模块，用于波分复用无源光网络系统
公开(公告)号：US20060098697A1
公开(公告)日：2006-05-11
申请号：US11120919
申请日：2005-05-02
申请人： Byoung Kim , Woo Lee , Jae Park
发明人： Byoung Kim , Woo Lee , Jae Park
IPC分类号： H01S3/10
CPC分类号： H01S5/0612 , H01S5/02284 , H01S5/02415
摘要： Disclosed is a wavelength tunable light source module for wavelength division multiplexing passive optical network systems, which is capable of being realizing at low costs, increasing utility of wavelength resources, and facilitating mass production. The wavelength tunable light source module comprising: a temperature adjustment unit for raising or lowering ambient temperature according to heat generation or heat absorption caused by an electrical signal, a support block attached to the temperature adjustment unit and having a structure for fixing a laser diode, and a TO-can type distributed feedback laser diode mounted on the temperature adjustment unit by the support block and having an operation wavelength varied according to the ambient temperature adjusted by the temperature adjustment unit.
摘要翻译：公开了一种用于波分复用无源光网络系统的波长可调光源模块，其能够以低成本实现，增加波长资源的效用并促进批量生产。该波长可调光源模块包括：温度调节单元，用于根据由电信号引起的发热或吸热而升高或降低环境温度;附接到温度调节单元的支撑块，并具有用于固定激光二极管的结构; 以及通过支撑块安装在温度调节单元上并具有根据由温度调节单元调节的环境温度而变化的工作波长的TO-can型分布式反馈激光二极管。

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