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1. 发明授权

US06785043B2 Dispersion-compensated optical fiber amplifier 有权
标题翻译：色散补偿光纤放大器
公开(公告)号：US06785043B2
公开(公告)日：2004-08-31
申请号：US10236158
申请日：2002-09-06
申请人： Seong-Taek Hwang , Kwan-Woong Song , Sung-Tae Kim , Young-Hoon Joo , Sung-Jin Park
发明人： Seong-Taek Hwang , Kwan-Woong Song , Sung-Tae Kim , Young-Hoon Joo , Sung-Jin Park
IPC分类号： H01S300
CPC分类号： H01S3/06754 , H01S3/0057 , H01S3/0064 , H01S3/06758 , H01S3/094003
摘要： Disclosed is a dispersion-compensated optical-fiber amplifier including a circulator for outputting an optical signal received at a first terminal to a second terminal, while outputting an optical signal received at the second terminal to a third terminal; a first amplifier for amplifying the optical signal from the second terminal and an optical signal reapplied thereto; a dispersion-compensating fiber for compensating for a dispersion occurring in the optical signal received from the first amplifier and an optical signal reapplied thereto; a second amplifier for amplifying the optical signal from the dispersion-compensating fiber and an optical signal reapplied thereto; a splitter installed on the dispersion-compensating fiber and adapted to output to the dispersion-compensating fiber, an optical signal applied thereto and an optical signal reapplied thereto, while outputting a pumping light applied to one end thereof and adapted to pump both the first and second amplifiers to the other end thereof without allowing the pumping light to pass through the dispersion-compensating fiber; and, a reflector for reflecting back an optical signal from the second amplifier, so that the reflected optical signal is reapplied to the second amplifier, the splitter, the first amplifier, and the circulator, in this order.
摘要翻译：公开了一种色散补偿光纤放大器，包括：循环器，用于将在第一端子处接收的光信号输出到第二端子，同时将在第二端子接收的光信号输出到第三端子; 用于放大来自第二端子的光信号的第一放大器和重新施加到其上的光信号; 用于补偿从第一放大器接收的光信号中出现的色散的色散补偿光纤和重新施加于其上的光信号; 用于放大来自色散补偿光纤的光信号的第二放大器和重新应用于其的光信号; 分散器，其安装在色散补偿光纤上并且适于输出到色散补偿光纤，施加到色散补偿光纤的光信号和重新施加到其上的光信号，同时输出施加到色散补偿光纤的一端的泵浦光，并且适于泵浦第一和第二放大器到另一端，而不允许泵浦光通过色散补偿光纤; 以及用于反射来自第二放大器的光信号的反射器，使得反射的光信号按照该顺序重新施加到第二放大器，分路器，第一放大器和循环器。

2. 发明授权

US06867912B2 Wide-band erbium-doped fiber amplifier and wavelength division multiplexing optical transmission system 失效
标题翻译：宽带掺铒光纤放大器和波分复用光传输系统
公开(公告)号：US06867912B2
公开(公告)日：2005-03-15
申请号：US10279528
申请日：2002-10-24
申请人： Seong-Taek Hwang , Young-Hoon Joo
发明人： Seong-Taek Hwang , Young-Hoon Joo
IPC分类号： H01S3/10 , G02B6/00 , H01S3/06 , H01S3/067 , H01S3/094 , H01S3/0941 , H01S3/00
CPC分类号： H04B10/291 , H01S3/067 , H04B2210/256 , H04B2210/258
摘要： An erbium-doped fiber amplifier and a wavelength division multiplexing optical transmission system equipped with the same are disclosed. The wavelength division multiplexing optical transmission system includes a transmission stage having a first C/L fiber amplifier for amplifying combined C and L-band optical signals, an optical repeater having at least one second C/L fiber amplifier for amplifying the optical signals transmitted from a single mode fiber of a predetermined length, and a dispersion compensating fiber of a predetermined length for compensating dispersions of the amplified optical signals. The system also includes a reception stage having a third C/L fiber amplifier for amplifying the optical signals transmitted from a single mode fiber of a predetermined length, and a receiver for separating the amplified optical signals from the third C/L fiber amplifier into C-band optical signals and L-band optical signals band by band and de-multiplexing the separated amplified optical signals.
摘要翻译：公开了掺铒光纤放大器和配备有掺铒光纤放大器的波分复用光传输系统。波分复用光传输系统包括具有用于放大组合C和L波段光信号的第一C / L光纤放大器的发射级，具有至少一个第二C / L光纤放大器的光中继器，用于放大从预定长度的单模光纤和预定长度的色散补偿光纤，用于补偿放大的光信号的分散。该系统还包括具有第三C / L光纤放大器的接收级，用于放大从预定长度的单模光纤传输的光信号，以及用于将放大的光信号与第三C / L光纤放大器分离成C 带式光信号和L波段光信号，并对分离的放大光信号进行解复用。

3. 发明授权

US06888671B2 Optical amplifier device and bidirectional wavelength division multiplexing optical communication system using the same 失效
标题翻译：光放大器器件和双向波分复用光通信系统使用相同
公开(公告)号：US06888671B2
公开(公告)日：2005-05-03
申请号：US10047707
申请日：2002-01-15
申请人： Young-Hoon Joo , Seong-Taek Hwang , Seong-Ha Kim , Gyu-Woong Lee
发明人： Young-Hoon Joo , Seong-Taek Hwang , Seong-Ha Kim , Gyu-Woong Lee
IPC分类号： H01S3/06 , G02B6/293 , H01S3/067 , H04B10/00 , H04B10/2519 , H04B10/29 , H04B10/297 , H04J14/00 , H04J14/02 , H01S3/00
CPC分类号： H04B10/2971 , H04B10/25133
摘要： Disclosed is a bi-direcional wavelength-division multiplexing optical communication system including a first optical transmitter/receiver unit for transmitting a forward optical signal composed of a plurality of channels respectively allocated with wavelengths having a desired wavelength space while receiving a reverse optical signal composed of a plurality of channels respectively allocated with wavelengths each interleaved between associated ones of the wavelengths of the forward optical signal, a second optical transmitter/receiver unit for transmitting the reverse optical signal while receiving the forward optical signal, an optical fiber coupled between the first and second optical transmitter/receiver units, the optical fiber serving as a transmission medium for the forward and reverse optical signals, and an optical amplifier device arranged on the optical fiber and adapted to interleave the channels of the forward and reverse optical signals, bi-directionally received via the optical fiber, in accordance with the wavelengths of the channels, to amplify an interleaved optical signal generated in accordance with the interleaving operation, to split the amplified optical signal into the forward and reverse optical signals in accordance with wavelengths, and to bi-directionally transmit the split forward and reverse optical signals via the optical fiber.
摘要翻译：公开了一种双向波分多路复用光通信系统，包括：第一光发射机/接收机单元，用于发送由分别分配有具有期望波长空间的波长的多个信道组成的正向光信号，同时接收由分别分配有在前向光信号的相关联的波长之间交织的波长的多个信道，用于在接收正向光信号的同时发送反向光信号的第二光发送器/接收器单元，耦合在第一和第第二光发射机/接收机单元，用作正向和反向光信号的传输介质的光纤，以及布置在光纤上的光放大器装置，用于将正向和反向光信号的信道双向交织通过o接收根据信道的波长，放大根据交织操作产生的交错光信号，根据波长将放大的光信号分离成正向和反向光信号，并且双向传输通过光纤分离正向和反向光信号。

4. 发明授权

US10152472B2 Apparatus and method for generating summary data of E-book or E-note 有权
公开(公告)号：US10152472B2
公开(公告)日：2018-12-11
申请号：US13559021
申请日：2012-07-26
申请人： Jeong-Wan Park , Seong-Taek Hwang , Jung-Rim Kim
发明人： Jeong-Wan Park , Seong-Taek Hwang , Jung-Rim Kim
IPC分类号： G06F17/00 , G06F17/27 , G06F17/30
摘要： An apparatus and method for generating summary data of an e-book or e-note, the method including if input data is received, recognizing a type of the input data, extracting a character region in the e-book or e-note corresponding to the recognized input data type, storing page information corresponding to the extracted character region, and generating summary data by using the page information corresponding to the character region when the generation of the summary data is requested, thereby allowing a user to preview summary content handwritten by the user on the e-book or e-note at a glance.

5. 发明授权

US09449418B2 Method and apparatus for creating animation message 有权
标题翻译：用于创建动画消息的方法和装置
公开(公告)号：US09449418B2
公开(公告)日：2016-09-20
申请号：US13012201
申请日：2011-01-24
申请人： Dong-Hyuk Lee , Mu-Sik Kwon , Sang-Wook Oh , Do-Hyeon Kim , Hee-Bum Ahn , Seong-Taek Hwang
发明人： Dong-Hyuk Lee , Mu-Sik Kwon , Sang-Wook Oh , Do-Hyeon Kim , Hee-Bum Ahn , Seong-Taek Hwang
IPC分类号： G06T13/00 , G06T13/80 , G06F3/041
CPC分类号： G06T13/80 , G06F3/041
摘要： A method for creating an animation message includes generating input information containing information regarding input time and input coordinates according to input order of drawing information input through a touch screen; dividing an image containing the drawing information and background information into a plurality of blocks; creating an animation message by mapping the input information to the plurality of blocks so that the drawing information can be sequentially reproduced according to the input order; allocating a parity bit per pre-set block range of the animation message in order to detect an error occurring in the animation message; and transmitting the created animation message.
摘要翻译：一种用于创建动画消息的方法包括根据输入通过触摸屏输入的绘图信息的顺序产生包含关于输入时间和输入坐标的信息的输入信息; 将包含绘图信息和背景信息的图像分割成多个块; 通过将输入信息映射到多个块来创建动画消息，使得可以根据输入的顺序顺序地再现绘图信息; 为每个动画消息的预设块范围分配奇偶校验位，以便检测动画消息中出现的错误; 并发送所创建的动画消息。

6. 发明授权

US08320681B2 Method and apparatus for recognizing characters 有权
标题翻译：用于识别字符的方法和装置
公开(公告)号：US08320681B2
公开(公告)日：2012-11-27
申请号：US12487378
申请日：2009-06-18
申请人： Hyun-Soo Kim , Seong-Taek Hwang , Sang-Wook Oh , Sang-Ho Kim , Yun-Je Oh , Hee-Won Jung , Sung-Cheol Kim
发明人： Hyun-Soo Kim , Seong-Taek Hwang , Sang-Wook Oh , Sang-Ho Kim , Yun-Je Oh , Hee-Won Jung , Sung-Cheol Kim
IPC分类号： G06K9/62
CPC分类号： G06K9/78 , G06K9/2081 , G06K9/228 , G06K9/325 , G06K9/723 , G06K2209/01
摘要： Disclosed is a method and an apparatus for recognizing characters using an image. A camera is activated according to a character recognition request and a preview mode is set for displaying an image photographed through the camera in real time. An auto focus of the camera is controlled and an image having a predetermined level of clarity is obtained for character recognition from the images obtained in the preview mode. The image for character recognition is character-recognition-processed so as to extract recognition result data. A final recognition character row is drawn that excludes non-character data from the recognition result data. A first word is combined including at least one character of the final recognition character row and a predetermined maximum number of characters. A dictionary database that stores dictionary information on various languages using the first word is searched, so as to provide the user with the corresponding word.
摘要翻译：公开了一种使用图像识别字符的方法和装置。根据字符识别请求激活相机，并且设置用于实时显示通过相机拍摄的图像的预览模式。控制相机的自动对焦，并且从在预览模式中获得的图像中获得具有预定水平的清晰度的图像以进行字符识别。用于字符识别的图像被字符识别处理，以便提取识别结果数据。绘制从识别结果数据排除非字符数据的最终识别字符行。组合第一个字，包括最终识别字符行的至少一个字符和预定的最大字符数。搜索使用第一个单词存储各种语言的字典信息的词典数据库，以向用户提供对应的单词。

7. 发明授权

US08290277B2 Method and apparatus for setting a lip region for lip reading 有权
标题翻译：用于设置唇部读数的唇部区域的方法和装置
公开(公告)号：US08290277B2
公开(公告)日：2012-10-16
申请号：US12646600
申请日：2009-12-23
申请人： Seong-Taek Hwang , Jin-Young Kim
发明人： Seong-Taek Hwang , Jin-Young Kim
IPC分类号： G06K9/46
CPC分类号： G06K9/00248
摘要： A method for setting a lip region of a face included in an image, including setting a first region and a second region in an image including a face, identifying contrast information of the first region, setting a threshold for binarization using the contrast information, and binarizing the second region based on the threshold. A region in which a pixel having an identical binary value continuously distributed within a predetermined number of ranges in the binarized image is set as an eye candidate object. An eye region is then extracted from the eye candidate object based on geometric characteristic of an eye region in an image, and the lip region is set with reference to the extracted eye region based on geometric information of the eye region and the lip region.
摘要翻译：一种用于设置包括在图像中的脸部的唇部区域的方法，包括在包括脸部的图像中设置第一区域和第二区域，识别第一区域的对比度信息，使用对比度信息设置二值化阈值，以及基于阈值二值化第二区域。将其中在二值化图像中的预定数量范围内连续分布的相同二进制值的像素设置为候选对象的区域。然后基于图像中的眼睛区域的几何特征，从眼睛候选物体中提取眼睛区域，并且基于眼睛区域和唇部区域的几何信息，参照提取的眼睛区域设定唇部区域。

8. 发明授权

US08149933B2 Method and apparatus for subchannel assignment for suppressing interantenna interference in OFDMA system 有权
标题翻译：用于抑制OFDMA系统中的天线间干扰的子信道分配的方法和装置
公开(公告)号：US08149933B2
公开(公告)日：2012-04-03
申请号：US12040023
申请日：2008-02-29
申请人： Shuangfeng Han , Seong-Taek Hwang , Zhunhui Zhou , Jing Wang , Ming Zhao , Zheng Xu
发明人： Shuangfeng Han , Seong-Taek Hwang , Zhunhui Zhou , Jing Wang , Ming Zhao , Zheng Xu
IPC分类号： H04K1/10
CPC分类号： H04L27/2601 , H04L5/0023 , H04L5/0032 , H04L5/0037 , H04L5/0062 , H04L5/023
摘要： Disclosed is a method and an apparatus for subchannel assignment for suppressing inter-antenna interference in an Orthogonal Frequency Division Multiplexing Access (OFDMA) system based distributed wireless communication system equipped with antennas that are randomly distributed in a geographical manner and can simultaneously communicate with multiple Subscriber Stations (SSs). The method includes selecting and obtaining access to distributed antennas which satisfy the data transmission rate that an SS requires and with which the SS can communicate; re-queuing a distributed antenna having the maximum transmitted power within the same cell in high priority; and assigning subchannels to the relevant distributed antennas in an order from the relevant distributed antenna having the high priority.
摘要翻译：公开了一种用于抑制基于正交频分复用接入（OFDMA）系统的分布式无线通信系统中的天线间干扰的方法和装置，所述分布式无线通信系统配备有以地理方式随机分布并可同时与多个用户通信的天线车站（SS）。该方法包括：选择和获得满足SS要求的数据传输速率并与SS通信的分布式天线; 将具有最高发送功率的分布式天线重新排队在高优先级的同一小区内; 以及从具有高优先级的相关分布式天线的顺序向相关的分布式天线分配子信道。

9. 发明授权

US08041222B2 Radio over fiber link apparatus of time division duplex scheme 有权
标题翻译：时分双工方式的光纤链路装置无线电
公开(公告)号：US08041222B2
公开(公告)日：2011-10-18
申请号：US11953911
申请日：2007-12-11
申请人： Han-Lim Lee , Hoon Kim , Seong-Taek Hwang
发明人： Han-Lim Lee , Hoon Kim , Seong-Taek Hwang
IPC分类号： H04B10/00
CPC分类号： H04J14/02 , H04B10/25758 , H04W88/085
摘要： A radio over fiber link apparatus for transmitting/receiving radio frequency up/downlink signals in a TDD mobile communication system. The radio over fiber link apparatus includes a center site for receiving radio frequency signals from an access point of the mobile communication system. The center site has a first electro-optic converter for converting the radio frequency signals into optical signals, bias control of the first electro-optic converter being performed based on the switching of TDD signals; and a remote for transmitting the radio frequency signals to a mobile communication terminal through an antenna. The remote site has a first photoelectric converter for converting the optical signals transmitted through an optical fiber from the center site into radio frequency signals.
摘要翻译：一种用于在TDD移动通信系统中发送/接收射频上行/下行链路信号的无线电光纤链路装置。光纤链路装置的无线电装置包括用于从移动通信系统的接入点接收射频信号的中心站点。中心站点具有用于将射频信号转换为光信号的第一电光转换器，基于TDD信号的切换执行第一电光转换器的偏置控制; 以及用于通过天线将射频信号发送到移动通信终端的遥控器。远程站点具有第一光电转换器，用于将通过光纤传输的光信号从中心位置转换成射频信号。

10. 发明授权

US07995924B2 Method and system for generating switching control signal separating transmission signal in optical repeater employing TDD scheme 失效
标题翻译：采用TDD方案的光中继器生成切换控制信号分离传输信号的方法和系统
公开(公告)号：US07995924B2
公开(公告)日：2011-08-09
申请号：US12001632
申请日：2007-12-12
申请人： Jae-Hoon Lee , Seong-Taek Hwang , Byung-Jik Kim , Sang-Ho Kim
发明人： Jae-Hoon Lee , Seong-Taek Hwang , Byung-Jik Kim , Sang-Ho Kim
IPC分类号： H04B10/22 , H04J14/08
CPC分类号： H04W88/085 , H04Q11/0067 , H04Q2011/0088
摘要： Disclosed are a method and a system for generating switching control signal separating transmission signal on an access point and a mobile communication terminal in an optical repeater employing, for example, a TDD scheme. The method includes the steps of generating a control signal for generating a switching control signal in transmitting data from the AP and transmitting the control information to a remote during an idle time interval, detecting synchronization information on the downlink signal and time-delay information from the control information, delaying a time interval between the synchronization information and a starting point of the downlink signal, generating the switching control signal for the downlink signal according to the transmission time information of the downlink signal, and performing a switching operation according to the switching control signal and setting a downlink path.
摘要翻译：公开了一种用于在采用例如TDD方案的光中继器中产生在接入点和移动通信终端上分离传输信号的切换控制信号的方法和系统。该方法包括以下步骤：在空闲时间间隔期间产生用于产生切换控制信号以从AP发送数据并将控制信息发送给远端，检测下行链路信号的同步信息和来自控制信息，延迟同步信息和下行链路信号的起始点之间的时间间隔，根据下行链路信号的发送时间信息生成下行链路信号的切换控制信号，根据切换控制进行切换动作信号并设置下行链路路径。

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