公开(公告)号：US20050255497A1

公开(公告)日：2005-11-17

申请号：US11022490

申请日：2004-12-22

申请人： Yu Ryun ,  Byoung Kim ,  Han Lee ,  Dong Lee ,  Yoon Lee

发明人： Yu Ryun ,  Byoung Kim ,  Han Lee ,  Dong Lee ,  Yoon Lee

IPC分类号： C12N1/21 ,  C12N9/90 ,  C12N15/61 ,  C12P19/24 ,  C12Q1/68 ,  C07H21/04 ,  C12N15/74 ,  C12P13/04 ,  C12P21/06

CPC分类号： C12P19/24 ,  C12N9/90

摘要： Disclosed are a novel gene coding for L-arabinose isomease derived from Thermotoga neapolitana 5068, a thermostable arabinose isomerase expressed from the said gene, a recombinant expression vector containing the said gene, a microorganism transformed with the said expression vector, a process for preparing thermostable arabinose isomerase from the said transformant and a process for preparing D-tagatose employing the said enzyme. Since the recombinant arabinose isomerase is highly thermostable and can produce tagatose with high yield at high temperature, it can be efficiently applied in pharmaceutical and food industries.

摘要翻译： 公开了编码从所述基因表达的热稳定性阿拉伯糖异构酶Thermotoga neapolitana 5068的L-阿拉伯糖异构酶的新基因，含有所述基因的重组表达载体，用所述表达载体转化的微生物，制备耐热性的方法 所述转化体的阿拉伯糖异构酶和使用所述酶制备D-塔格糖的方法。 由于重组阿拉伯糖异构酶是高度热稳定的，可以在高温下以高产率生产塔格糖，因此可有效应用于制药和食品工业。

公开(公告)号：US20080013616A1

公开(公告)日：2008-01-17

申请号：US11775662

申请日：2007-07-10

申请人： Jong Kim ,  In Choi ,  Kook Kwak ,  Byoung Kim ,  Won Song ,  Jin Kim ,  Hyoung Lee

发明人： Jong Kim ,  In Choi ,  Kook Kwak ,  Byoung Kim ,  Won Song ,  Jin Kim ,  Hyoung Lee

IPC分类号： H04L27/01 ,  H03M13/15

CPC分类号： H04H20/57 ,  H04H40/27 ,  H04L25/0212 ,  H04L27/0014 ,  H04L2027/0038 ,  H04L2027/0067 ,  H04N21/235 ,  H04N21/26606 ,  H04N21/4345 ,  H04N21/435 ,  H04N21/4623

摘要： A channel equalizer includes a channel estimator, a coefficient calculator, a multiplier, and an error remover. The channel estimator estimates a channel impulse response (CIR) of input data in which a known data sequence is periodically inserted. The coefficient calculator calculates equalization coefficients using estimated CIR, and the multiplier multiplies the input data with the equalization coefficients for channel equalization. The error removes estimates a residual carrier phase error of the channel-equalized input data and removes the estimated phase error from the input data.

摘要翻译： 信道均衡器包括信道估计器，系数计算器，乘法器和误差去除器。 信道估计器估计周期性地插入已知数据序列的输入数据的信道脉冲响应（CIR）。 系数计算器使用估计CIR计算均衡系数，乘法器将输入数据与用于信道均衡的均衡系数相乘。 误差消除估计信道均衡输入数据的残留载波相位误差，并从输入数据中消除估计的相位误差。

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.

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。

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。

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：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。

公开(公告)号：US20070076586A1

公开(公告)日：2007-04-05

申请号：US11543049

申请日：2006-10-05

申请人： Jin Kim ,  Young Kim ,  Ho Hong ,  In Choi ,  Kook Kwak ,  Hyoung Lee ,  Byoung Kim ,  Jin Kim ,  Jong Kim ,  Won Song

发明人： Jin Kim ,  Young Kim ,  Ho Hong ,  In Choi ,  Kook Kwak ,  Hyoung Lee ,  Byoung Kim ,  Jin Kim ,  Jong Kim ,  Won Song

IPC分类号： H04J11/00

CPC分类号： H04H20/55 ,  H04H20/95 ,  H04L1/0065 ,  H04L1/0071 ,  H04L1/0083 ,  H04L2001/0093

摘要： A digital broadcast transmitting/receiving system and a method for processing data are disclosed. The method for processing data may enhance the receiving performance of the receiving system by performing additional coding and multiplexing processes on the traffic information data and transmitting the processed data. Thus, robustness is provided to the traffic information data, thereby enabling the data to respond strongly against the channel environment which is always under constant and vast change.

公开(公告)号：US20070076584A1

公开(公告)日：2007-04-05

申请号：US11541561

申请日：2006-10-03

申请人： Jin Kim ,  Young Kim ,  Ho Hong ,  In Choi ,  Kook Kwak ,  Hyoung Lee ,  Byoung Kim ,  Jin Kim ,  Jong Kim ,  Won Song

发明人： Jin Kim ,  Young Kim ,  Ho Hong ,  In Choi ,  Kook Kwak ,  Hyoung Lee ,  Byoung Kim ,  Jin Kim ,  Jong Kim ,  Won Song

IPC分类号： H04J11/00

CPC分类号： H04H20/55 ,  G08G1/092 ,  H04H20/95 ,  H04L1/0041 ,  H04L1/0059 ,  H04L1/0061 ,  H04L1/0072 ,  H04N21/235 ,  H04N21/23608 ,  H04N21/435

摘要： A digital broadcast transmitting/receiving system and a method for processing data are disclosed. The method for processing data may enhance the receiving performance of the receiving system by performing additional coding and multiplexing processes on the traffic information data and transmitting the processed data. Thus, robustness is provided to the traffic information data, thereby enabling the data to respond strongly against the channel environment which is always under constant and vast change.

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。