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11. 发明授权

US08009742B2 Method and system for retransmitting internet protocol packet for terrestrial digital multimedia broadcasting service 失效
标题翻译：用于地面数字多媒体广播业务重传互联网协议报文的方法和系统
公开(公告)号：US08009742B2
公开(公告)日：2011-08-30
申请号：US11900873
申请日：2007-09-12
申请人： Sung-Kee Kim , Do-In Choi , Yong-Gyoo Kim , Yun-Je Oh , Seong-Taek Hwang
发明人： Sung-Kee Kim , Do-In Choi , Yong-Gyoo Kim , Yun-Je Oh , Seong-Taek Hwang
IPC分类号： H04N11/02 , H04N7/20 , H04N7/173 , H04N7/16 , H04J3/16
CPC分类号： H04L65/607 , H04L65/608 , H04N21/234318 , H04N21/4307 , H04N21/64707
摘要： A system and method for retransmitting an Internet protocol packet for terrestrial digital multimedia broadcasting (DMB) service are provided, in which a PES packetizer and an MPEG-2 TS multiplexer are removed; video, audio, and data signals are individually carried by RTP packets; and a receiver extracts object clock reference (OCR) included in a MPEG-4 SL, and synchronizes a system clock and controls buffers by means of the OCR.
摘要翻译：提供了一种用于重新发送用于地面数字多媒体广播（DMB）业务的因特网协议分组的系统和方法，其中PES分组器和MPEG-2TS多路复用器被去除; 视频，音频和数据信号由RTP包分别承载; 并且接收器提取包含在MPEG-4SL中的对象时钟参考（OCR），并且通过OCR同步系统时钟并控制缓冲器。

12. 发明授权

US07257330B2 Duobinary optical transmission apparatus using a semiconductor optical amplifier 失效
标题翻译：使用半导体光放大器的二元光传输装置
公开(公告)号：US07257330B2
公开(公告)日：2007-08-14
申请号：US10691359
申请日：2003-10-22
申请人： Gyu-Woong Lee , Sung-Kee Kim , Seong-Taek Hwang , Yun-Je Oh
发明人： Gyu-Woong Lee , Sung-Kee Kim , Seong-Taek Hwang , Yun-Je Oh
IPC分类号： H04B10/04 , H04B10/12 , G02F1/01 , G02F1/03
CPC分类号： H04B10/25137 , H04B10/505 , H04B10/5055 , H04B10/5167
摘要： Disclosed is a duobinary optical transmission apparatus using a semiconductor optical amplifier (SOA). The duobinary optical transmission apparatus includes a light source for generating a carrier wave; a duobinary precoder for encoding an input (non return to zero) electric signal; a semiconductor optical amplification unit to amplify the encoded signal from the duobinary precoder, wherein the amplification unit receives an optical amplification gain difference that varies with a bias current combined with the encoded signal; and an optical band pass filter for receiving a phase-modulated optical signal from the semiconductor optical amplification unit, filtering the received optical signal to a prescribed bandwidth, and thereby generates a duobinary optical signal.
摘要翻译：公开了使用半导体光放大器（SOA）的二元光传输装置。二元光传输装置包括用于产生载波的光源; 用于对输入（不归零）电信号进行编码的二进制预编码器; 半导体光放大单元，用于放大来自双二进制预编码器的编码信号，其中放大单元接收随着与编码信号组合的偏置电流而变化的光放大增益差; 以及光学带通滤波器，用于从半导体光放大单元接收相位调制的光信号，将接收到的光信号过滤到规定的带宽，从而产生双二进制的光信号。

13. 发明申请

US20070053311A1 ROF link apparatus capable of stable TDD wireless service 失效
标题翻译：能够稳定TDD无线服务的ROF链路装置
公开(公告)号：US20070053311A1
公开(公告)日：2007-03-08
申请号：US11514440
申请日：2006-09-01
申请人： Sang-Ho Kim , Yun-Je Oh , Seong-Taek Hwang , Byung-Jik Kim , Gyu-Woong Lee , Hoon Kim , Sung-Kee Kim , Han-Lim Lee , Jae-Hoon Lee , Yong-Gyoo Kim , Dae-Eun Choi
发明人： Sang-Ho Kim , Yun-Je Oh , Seong-Taek Hwang , Byung-Jik Kim , Gyu-Woong Lee , Hoon Kim , Sung-Kee Kim , Han-Lim Lee , Jae-Hoon Lee , Yong-Gyoo Kim , Dae-Eun Choi
IPC分类号： H04J3/00
CPC分类号： H04W88/085
摘要： A radio over fiber (ROF) link apparatus capable of a stable TDD wireless service for a time division duplexing (TDD) baseband signal includes a central access platform (CAP) for receiving various kinds of data including the TDD baseband signal from upper layers, multiplexing the data, electro-optically converting the multiplexed data, and transmitting the converted data as downstream data through an optical fiber, and opto-electrically converting upstream data received through the optical fiber, demultiplexing the converted upstream data, and transmitting the demultiplexed upstream data to the respective upper layers, and a remote access unit (RAU) for receiving the downstream data through the optical fiber, opto-electrically converting the received downstream data to the multiplexed data, demultiplexing the multiplexed data, performing a wireless access process of the demultiplexed data, and transmitting the wireless access processed data to a wireless local area network (WLAN) service terminal through an antenna.
摘要翻译：能够对TDD时基双工（TDD）基带信号进行稳定的TDD无线业务的无线电光纤（ROF）链路装置包括用于从上层接收包括TDD基带信号的各种数据的中央接入平台（CAP）数据，电光转换多路复用数据，并通过光纤将转换后的数据作为下行数据发送，并对通过光纤接收的上行数据进行光电转换，对转换的上行数据进行解复用，并将解复用的上行数据发送到各自的上层以及用于通过光纤接收下游数据的远程访问单元（RAU），将接收到的下游数据光电转换为多路复用数据，解复用多路复用数据，执行解复用数据的无线接入处理，并将无线接入处理的数据发送到无线局域网（WLAN）服务 e端子通过天线。

14. 发明授权

US06891651B2 EML transmitter applying band stop filter 失效
标题翻译： EML发射机应用带阻滤波器
公开(公告)号：US06891651B2
公开(公告)日：2005-05-10
申请号：US10619318
申请日：2003-07-14
申请人： Sung-Kee Kim , Gyu-Woong Lee , Yun-Je Oh , Seong-Taek Hwang
发明人： Sung-Kee Kim , Gyu-Woong Lee , Yun-Je Oh , Seong-Taek Hwang
IPC分类号： G02F1/015 , H01S5/00 , H01S5/022 , H01S5/042 , H01S5/14 , H04B10/2507 , H04B10/2543 , H04B10/40 , H04B10/50 , H04B10/516 , H04B10/60 , H04B10/61 , G02F1/01
CPC分类号： H01S5/146 , H01S5/005 , H01S5/0064 , H01S5/02216 , H01S5/02284 , H01S5/0427
摘要： An EML transmitter having a band stop filter to improve the transmission characteristics before and after the transmission is provided. This is achieved by improving the chirp characteristics and the extinction ratio during the transmission of optical signals using an EML. The inventive EML transmitter includes: an EML for generating transmission light; a first lens for focusing optical signal outputs from the EML to prevent loss of the optical signals; a second lens for focusing the optical signals into a core portion of an optical line; and, a band stop filter for removing the D.C. component from the optical signals outputted by the EML.
摘要翻译：提供具有带通滤波器以提高传输前后的传输特性的EML发射机。这是通过使用EML在光信号传输期间改进啁啾特性和消光比来实现的。本发明的EML发射机包括：用于产生传输光的EML; 用于聚焦来自EML的光信号输出的第一透镜，以防止光信号的损失; 第二透镜，用于将光信号聚焦到光线路的芯部; 以及用于从EML输出的光信号中去除直流分量的带阻滤波器。

15. 发明申请

US20050058461A1 Optical transmission device 审中-公开
标题翻译：光传输装置
公开(公告)号：US20050058461A1
公开(公告)日：2005-03-17
申请号：US10843233
申请日：2004-05-10
申请人： Han-Lim Lee , Hoon Kim , Yun-Je Oh , Seong-Taek Hwang , Sung-Kee Kim , Gyu-Woong Lee
发明人： Han-Lim Lee , Hoon Kim , Yun-Je Oh , Seong-Taek Hwang , Sung-Kee Kim , Gyu-Woong Lee
IPC分类号： G02F1/035 , H04B10/2507 , H04B10/2513 , H04B10/2537 , H04B10/516 , H04B10/61 , H04B10/04
CPC分类号： H04B10/505 , H04B10/5055 , H04B10/5167
摘要： A duobinary optical transmission device that uses a duobinary optical transmission technique is disclosed. The duobinary optical transmission device may use an X-cut Mach-Zehnder interferometer type modulator. The duobinary optical transmission device includes a light source that outputs a carrier wave. A duobinary encoder encodes an input non-return-to-zero (NRZ) electrical signal. A low pass filter (LPF) converts the encoded signal into a 3-level electrical signal. An optical intensity modulator modulates the phase and light intensity of the carrier wave according to the 3-level electrical signal and outputs a 2-level optical duobinary signal. The optical intensity modulator may be an X-cut optical intensity modulator including a substrate; an optical waveguide formed on the substrate, and an electrode for applying an electric field.
摘要翻译：公开了一种使用双二进制光传输技术的双向光传输装置。双向光传输装置可以使用X切割马赫 - 曾德干涉仪型调制器。二元光传输装置包括输出载波的光源。二进制编码器对输入的不归零（NRZ）电信号进行编码。低通滤波器（LPF）将编码信号转换为3级电信号。光强调制器根据3电平电信号调制载波的相位和光强，并输出2电平的光双二进制信号。光强度调制器可以是包括衬底的X切割光强度调制器; 形成在基板上的光波导和用于施加电场的电极。

16. 发明申请

US20080064425A1 Transmission method using scalable video coding and mobile communication system using same 审中-公开
标题翻译：使用可扩展视频编码和移动通信系统的传输方法采用相同的方式
公开(公告)号：US20080064425A1
公开(公告)日：2008-03-13
申请号：US11801731
申请日：2007-05-10
申请人： Yong-Gyoo Kim , Do-In Choi , Sung-Kee Kim , Yun-Je Oh , Seong-Taek Hwang
发明人： Yong-Gyoo Kim , Do-In Choi , Sung-Kee Kim , Yun-Je Oh , Seong-Taek Hwang
IPC分类号： H04Q7/20 , H04B1/66
CPC分类号： H04N21/6405 , H04L1/0003 , H04L1/0009 , H04L1/0045 , H04L5/0007 , H04L5/0046 , H04L5/006 , H04N19/164 , H04N19/187 , H04N19/67 , H04N21/234327 , H04N21/234363 , H04N21/234381 , H04N21/2383 , H04N21/2402 , H04N21/2662 , H04W4/06
摘要： A mobile communication system for providing a multicast/broadcast service is disclosed. The mobile communication systems comprise a base station that encodes video data of the mobile communication system into scalable bit streams and adaptively modulates and channel codes the scalable bit streams. A mobile communication terminal receives, demodulates and channel decodes the scalable bit streams transmitted from the base station and performs a process for scalable decoding the bit streams according to reception sensitivity. Overall system efficiency can be improved while increasing a transmission rate using scalable video coding according to channel characteristics between the mobile communication terminal and the base station in the multicast/broadcast service. Quality of service (QoS) can be provided based on the performance of the mobile communication terminal.
摘要翻译：公开了一种用于提供组播/广播服务的移动通信系统。移动通信系统包括：基站，其将移动通信系统的视频数据编码成可缩放比特流，并自适应地对可缩放比特流进行调制和信道编码。移动通信终端接收对从基站发送的可缩放比特流进行解调和信道解码，并根据接收灵敏度执行用于对比特流进行可扩展解码的处理。可以根据多播/广播服务中的移动通信终端与基站之间的信道特性，使用可伸缩视频编码来提高传输速率，从而提高整体系统效率。可以基于移动通信终端的性能来提供服务质量（QoS）。

17. 发明申请

US20060171721A1 Label remover and label swapper using the same 审中-公开
标题翻译：标签去除器和使用相同的标签交换器
公开(公告)号：US20060171721A1
公开(公告)日：2006-08-03
申请号：US11185108
申请日：2005-07-20
申请人： Sung-Kee Kim , Hoon Kim , Yun-Je Oh , Seong-Taek Hwang
发明人： Sung-Kee Kim , Hoon Kim , Yun-Je Oh , Seong-Taek Hwang
IPC分类号： H04B10/04
CPC分类号： H04L45/00 , H04B10/2937
摘要： A label remover, and the method using the same, renders photoelectric conversion becomes unnecessary and improves using conditions and transmission quality. The label remover includes: (a) an oscillator for outputting a driving signal having a third frequency f3; (b) a double-sided band converter for (i) receiving an optical signal modulated based on a data signal of an intermediate frequency fm and frequency-modulated based on a label signal so as to indicate a first frequency f1 and a second frequency f2; and (ii) frequency-transiting the received optical signal so that each of the first and second frequencies is transited to at least two frequencies including the intermediate frequency fm; and (c) a band passer filter for filtering the frequency-transited optical signal to remove frequencies except the intermediate frequency fm.
摘要翻译：标签去除器及其使用方法使光电转换变得不必要，并且改善了使用条件和传输质量。标签去除器包括：（a）用于输出具有第三频率f 3的驱动信号的振荡器; （b）双面频带转换器，用于（i）接收基于中频fm的数据信号调制并基于标号信号进行频率调制的光信号，以指示第一频率f 1和第二频率 f 2; 和（ii）对所接收的光信号进行频率转换，使得第一和第二频率中的每一个被转换到包括中频fm的至少两个频率; 和（c）带通滤波器，用于对频率转换的光信号进行滤波以除去中间频率fm以外的频率。

18. 发明授权

US07362978B2 Duobinary optical transmission apparatus 失效
标题翻译：双色光传输装置
公开(公告)号：US07362978B2
公开(公告)日：2008-04-22
申请号：US10458150
申请日：2003-06-10
申请人： Sung-Kee Kim , Han-Lim Lee , Yun-Je Oh , Seong-Taek Hwang
发明人： Sung-Kee Kim , Han-Lim Lee , Yun-Je Oh , Seong-Taek Hwang
IPC分类号： H04B10/04 , H04B10/12
CPC分类号： H04B10/503 , H04B10/505 , H04B10/5055 , H04B10/5167
摘要： Disclosed is a duobinary optical transmission apparatus. The duobinary optical transmission apparatus uses the crossed phase characteristics of a duobinary signal without using a feedback-type precoder and an electric LPF, and is thereby not affected by Pseudo-Random Bit Sequence (PRBS), and is very resistant to wavelength division characteristics. In addition to a drive amplifier, a Mach-Zehnder-interferometer-type optical intensity modulator (MZ MOD), and a laser source for generating a carrier wave, the duobinary optical transmission apparatus further includes a toggle flip-flop (T.FF) and an AND gate to separate a group of ‘1’ from input data signal in such a way that the input data signal is modulated to make each signal have a different phase.
摘要翻译：公开了一种二元光传输装置。双二进制光传输装置使用双二进制信号的交叉相位特性，而不使用反馈型预编码器和电LPF，因此不受伪随机比特序列（PRBS）的影响，并且非常耐波分复用特性。除了驱动放大器，马赫 - 曾德干涉仪型光强度调制器（MZ MOD）和用于产生载波的激光源之外，双二进制光传输装置还包括一个切换触发器（T.FF）以及与门分离一组“1”与输入数据信号，使得输入数据信号被调制以使每个信号具有不同的相位。

19. 发明申请

US20080062998A1 Method and system for retransmitting Internet Protocol packet for terrestrial digital multimedia broadcasting service 失效
标题翻译：用于地面数字多媒体广播业务重传互联网协议报文的方法和系统
公开(公告)号：US20080062998A1
公开(公告)日：2008-03-13
申请号：US11900873
申请日：2007-09-12
申请人： Sung-Kee Kim , Do-In Choi , Yong-Gyoo Kim , Yun-Je Oh , Seong-Taek Hwang
发明人： Sung-Kee Kim , Do-In Choi , Yong-Gyoo Kim , Yun-Je Oh , Seong-Taek Hwang
IPC分类号： H04L12/28 , H04N11/02
CPC分类号： H04L65/607 , H04L65/608 , H04N21/234318 , H04N21/4307 , H04N21/64707
摘要： A system and method for retransmitting an Internet protocol packet for terrestrial digital multimedia broadcasting (DMB) service are provided, in which a PES packetizer and an MPEG-2 TS multiplexer are removed; video, audio, and data signals are individually carried by RTP packets; and a receiver extracts object clock reference (OCR) included in a PEG-4 SL, and synchronizes a system clock and controls buffers by means of the OCR.
摘要翻译：提供了一种用于重新发送用于地面数字多媒体广播（DMB）业务的因特网协议分组的系统和方法，其中PES分组器和MPEG-2TS多路复用器被去除; 视频，音频和数据信号由RTP包分别承载; 并且接收器提取包括在PEG-4SL中的对象时钟参考（OCR），并且通过OCR同步系统时钟并控制缓冲器。

20. 发明授权

US07193539B2 Precoder and optical duo-binary transmission apparatus using the same 失效
标题翻译：预编码器和光二进制二进制传输装置使用
公开(公告)号：US07193539B2
公开(公告)日：2007-03-20
申请号：US10807048
申请日：2004-03-23
申请人： Sung-Kee Kim , Han-Lim Lee , Yun-Je Oh , Seong-Taek Hwang
发明人： Sung-Kee Kim , Han-Lim Lee , Yun-Je Oh , Seong-Taek Hwang
IPC分类号： H03M5/00
CPC分类号： H03M5/06 , G11B20/10 , H03M13/00
摘要： A precoder for an optical duo-binary transmission apparatus disposing the precoder before a time division multiplexer includes a judgment unit for judging whether an odd number or even number of ‘1’s exist in data input signals of N channels inputted at an nth time of channel input. Further included in the precoder is a toggle unit for toggling an output signal of the judgment unit when the judgment is odd, and for determining an output value for one of the channels. The precoder also has an output unit for determining output values of other channels according to a respective data input signal and a predetermined channel from among the N channels.
摘要翻译：用于在时分多路复用器之前配置预编码器的光二元传输装置的预编码器包括判断单元，用于判断是否存在在n第n个输入的N个信道的数据输入信号中的奇数或偶数个“1” 频道输入时间。进一步包括在预编码器中的是用于当判断为奇数时用于切换判断单元的输出信号并且用于确定一个通道的输出值的切换单元。预编码器还具有输出单元，用于根据相应的数据输入信号和N个信道中的预定信道来确定其它信道的输出值。

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