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51. 发明申请

US20070258432A1 Single wavelength Bi-directional RoF link apparatus for signal transmission in TDD wireless system 有权
标题翻译：单波长双向RoF链路设备，用于TDD无线系统中的信号传输
公开(公告)号：US20070258432A1
公开(公告)日：2007-11-08
申请号：US11642260
申请日：2006-12-20
申请人： Jae-Hoon Lee , Byung-Jik Kim , Seong-Taek Hwang , Sang-Ho Kim
发明人： Jae-Hoon Lee , Byung-Jik Kim , Seong-Taek Hwang , Sang-Ho Kim
IPC分类号： H04B7/212
CPC分类号： H04B10/25758 , H04B7/2606
摘要： A single wavelength bi-directional RoF link apparatus for signal transmission in a TDD wireless system includes a main donor for receiving an RF signal of downstream data from an upper layer, electrooptic converting the received RF signal to an optical signal, and transmitting the converted optical signal via an optical fiber in response to a TDD switching signal received from the upper layer, or receiving an optical signal of upstream data via the optical fiber, opto-electric converting the received optical signal to an RF signal in response to the TDD switching signal received from the upper layer, and transmitting the converted optical signal to the main donor; and a remote for receiving the optical signal of the downstream data via the optical fiber from the main donor, opto-electric converting the received optical signal to an RF signal, and emitting the converted RF signal to a terminal via an antenna in response to a TDD switching signal generated by a switch timing signal generation circuit, or receiving an RF signal of upstream data from the terminal, electro-optic converting the received RF signal to an optical signal in response to the TDD switching signal generated by the switch timing signal generation circuit, and transmitting the converted optical signal to the main donor via the optical fiber.
摘要翻译：在TDD无线系统中用于信号传输的单波长双向RoF链路装置包括：主要供体，用于从上层接收下行数据的RF信号，将所接收的RF信号电光转换成光信号，并将转换后的光响应于从上层接收的TDD切换信号，或经由光纤接收上行数据的光信号，经由光纤发送信号，响应于TDD切换信号将接收到的光信号光电转换为RF信号从上层接收，并将转换的光信号发送到主供体; 以及遥控器，用于经由来自主施体的光纤接收下行数据的光信号，将所接收的光信号光电转换成RF信号，并响应于一个天线经由天线将转换的RF信号发射到终端 TDD切换信号，或者从终端接收上行数据的RF信号，根据切换定时信号生成产生的TDD切换信号将接收的RF信号电光转换为光信号并且经由光纤将转换后的光信号发送到主供体。

52. 发明授权

US07271949B2 Multi-wavelength light source and wavelength division multiplexing system using the same 失效
标题翻译：多波长光源和波分复用系统使用相同
公开(公告)号：US07271949B2
公开(公告)日：2007-09-18
申请号：US10853969
申请日：2004-05-26
申请人： Sang-Ho Kim , Seong-Taek Hwang
发明人： Sang-Ho Kim , Seong-Taek Hwang
IPC分类号： H04B10/17
CPC分类号： H04J14/02 , H01S3/06754 , H01S3/06795 , H01S3/08086 , H01S3/1608 , H01S3/1613 , H01S3/1616
摘要： A multi-wavelength light source includes an amplifier for generating light over a wide wavelength range; and, an optical fiber grating including a plurality of gratings formed on an optical fiber in in parallel with each other, thereby dividing the light inputted from the amplifier into respective channels having different wavelengths to reflect the divided channels to the amplifier. The amplifier amplifies each channel reflected in the gratings.
摘要翻译：多波长光源包括用于在宽波长范围内产生光的放大器; 以及包括形成在光纤上的多个光栅彼此并联的光纤光栅，从而将从放大器输入的光分成具有不同波长的各个通道，以将分离的通道反射到放大器。放大器放大在光栅中反射的每个通道。

53. 发明申请

US20070147273A1 ROF link system for supporting various services 有权
标题翻译： ROF链路系统支持各种业务
公开(公告)号：US20070147273A1
公开(公告)日：2007-06-28
申请号：US11633838
申请日：2006-12-05
申请人： Han-Lim Lee , Seong-Taek Hwang , Byung-Jik Kim , Gyu-Woong Lee , Hoon Kim , Jae-Hoon Lee , Yong-Gyoo Kim , Sang-Ho Kim , Sung-Kee Kim
发明人： Han-Lim Lee , Seong-Taek Hwang , Byung-Jik Kim , Gyu-Woong Lee , Hoon Kim , Jae-Hoon Lee , Yong-Gyoo Kim , Sang-Ho Kim , Sung-Kee Kim
IPC分类号： H04J3/00
CPC分类号： H04B10/25758 , H04H20/69 , H04H20/71 , H04W88/085 , H04W88/10
摘要： Disclosed is a radio-over-fiber (ROF) system for supporting various services, the system comprising: a central access platform (CAP) for providing time division duplexing (TDD), frequency division duplexing (FDD), and broadcasting services, converting a TDD downward signal and FDD/broadcasting downward signals into optical signals, respectively, transmitting the converted optical signals to a remote access unit (RAU), converting a TDD upward signal and an FDD upward signal, which have been transmitted as optical signals from the RAU, into electric signals, respectively, and using an optical circulator in order to separate upward and downward signals from each other; and the RAU for converting the TDD downward signal and FDD/broadcasting downward signals transmitted from the CAP into electric signals, respectively, converting the TDD upward signal and FDD upward signal to be transmitted to the CAP into optical signals, respectively, and using an optical circulator in order to separate upward and downward signals from each other, wherein the RAU includes a plurality of signal filtering/separating/combining units, which wirelessly emit the TDD downward signal and FDD/broadcasting downward signals, having been converted into electric signals, through an antenna, and which separate wirelessly-received TDD upward signal and FDD upward signal from each other.
摘要翻译：公开了用于支持各种业务的无线电光纤（ROF）系统，该系统包括：用于提供时分双工（TDD），频分双工（FDD）和广播服务的中央接入平台（CAP） TDD向下信号和FDD /广播向下信号分别转换成光信号，将转换后的光信号发送到远程接入单元（RAU），转换已经作为光信号从RAU发送的TDD上行信号和FDD向上信号分别变成电信号，并使用光循环器，以便彼此分离上下信号; 以及分别将从CAP发送的TDD向下信号和FDD /广播向下信号转换成电信号的RAU，分别将TDD向上信号和FDD向上信号转换为发送到CAP的光信号，并使用光循环器，以便彼此分离上下信号，其中RAU包括多个信号滤波/分离/组合单元，其经过转换成电信号无线地发射TDD向下信号和FDD /广播向下信号，通过天线，并且将无线接收的TDD上行信号和FDD上行信号彼此分离。

54. 发明授权

US06975448B2 Automatic gain controller of optical fiber amplifier 失效
标题翻译：光纤放大器自动增益控制器
公开(公告)号：US06975448B2
公开(公告)日：2005-12-13
申请号：US10719140
申请日：2003-11-21
申请人： Se-Hong Park , Sang-Ho Kim , Kwan-Woong Song , Seong-Taek Hwang , Tae-Sung Park
发明人： Se-Hong Park , Sang-Ho Kim , Kwan-Woong Song , Seong-Taek Hwang , Tae-Sung Park
IPC分类号： H01S3/10 , H01S3/00 , H01S3/067 , H01S3/13 , H01S3/131 , H04B10/17
CPC分类号： H04B10/2942 , H01S3/06754 , H01S3/10015 , H01S3/1301
摘要： An automatic gain controller for controlling gain values of an optical fiber amplifier. The automatic gain controller includes a first opto-electric conversion unit for converting a portion of optical signals that are input into the optical fiber amplifier into electrical signals to output the converted electrical signals. A second opto-electric conversion unit converts a portion of output optical signals output from the optical fiber amplifier into electrical signals and then outputs the converted electrical signals. A transient suppressing unit generates pulse typed waveforms when a change in channel number is generated during monitoring outputs of the first opto-electric conversion unit, and a comparing unit compares the sum of output signals of the transient suppressing unit and output signals of the first opto-electric conversion unit with output signals of the second opto-electric conversion unit. A control unit outputs pump control signals in response to the output signals of the transient suppressing unit and output signals of the comparing unit, and a first pumping light source unit supplies pumping light to the optical fiber amplifier in response to the inputting of the pump control signals.
摘要翻译：一种用于控制光纤放大器的增益值的自动增益控制器。自动增益控制器包括：第一光电转换单元，用于将输入到光纤放大器的光信号的一部分转换成电信号，以输出转换的电信号。第二光电转换单元将从光纤放大器输出的输出光信号的一部分转换为电信号，然后输出转换的电信号。当在第一光电转换单元的监视输出期间产生通道号的变化时，瞬态抑制单元产生脉冲类型波形，比较单元比较瞬态抑制单元的输出信号和第一光电转换单元的输出信号之和电转换单元，其具有第二光电转换单元的输出信号。控制单元响应瞬态抑制单元的输出信号和比较单元的输出信号输出泵控制信号，第一泵浦光源单元响应于泵控制的输入向泵浦光提供泵浦光信号。

55. 发明申请

US20050185259A1 Broadband light source 有权
标题翻译：宽带光源
公开(公告)号：US20050185259A1
公开(公告)日：2005-08-25
申请号：US10858913
申请日：2004-06-02
申请人： Sang-Ho Kim , Seong-Taek Hwang , Se-Hong Park , Kwan-Woong Song , Gyu-Woong Lee
发明人： Sang-Ho Kim , Seong-Taek Hwang , Se-Hong Park , Kwan-Woong Song , Gyu-Woong Lee
IPC分类号： H01S3/10 , G02B6/26 , G02F1/35 , H01S3/00 , H01S3/067 , H01S3/094 , H01S5/00 , H04J14/00
CPC分类号： H04B10/506 , H01S3/005 , H01S3/0078 , H01S3/06758 , H01S3/06766 , H01S3/0677 , H01S3/094011 , H01S3/094023 , H01S5/0064 , H04B10/294
摘要： A broadband light source includes an optical amplifier having amplifying mediums connected in series outputs an amplified spontaneous emission light over a wide wavelength range forward or backward. A circulator connected in series to the optical amplifier returns back to the amplifier spontaneous emission light outputted backwardly from the amplifier. A first pumping means located between the circulator and the optical amplifier pumps a pumping light to the optical amplifier, and a second pumping means located after the optical amplifier pumps a pumping light to the optical amplifier.
摘要翻译：宽带光源包括具有串联连接的放大介质的光放大器，其在宽波长范围内向前或向后输出放大的自发发射光。与光放大器串联连接的环行器返回到从放大器向后输出的放大器自发发射光。位于循环器和光学放大器之间的第一泵送装置将泵浦光泵送到光放大器，以及位于光放大器将泵浦光泵送到光放大器之后的第二泵装置。

56. 发明授权

US08417057B2 Method of compensating for distortion in text recognition 有权
标题翻译：补偿文字识别失真的方法
公开(公告)号：US08417057B2
公开(公告)日：2013-04-09
申请号：US12705238
申请日：2010-02-12
申请人： Sang-Wook Oh , Seong-Taek Hwang , Hyun-Soo Kim , Sang-Ho Kim , Guee-Sang Lee , Soo-Hyung Kim , Hyung-Jeong Yang , Eui-Chul Kim
发明人： Sang-Wook Oh , Seong-Taek Hwang , Hyun-Soo Kim , Sang-Ho Kim , Guee-Sang Lee , Soo-Hyung Kim , Hyung-Jeong Yang , Eui-Chul Kim
IPC分类号： G06K9/40
CPC分类号： G06K9/32 , G06K9/342 , G06K2009/363 , G06K2209/01
摘要： A method of compensating for distortion in text recognition is provided, which includes extracting a text region from an image; estimating the form of an upper end of the extracted text region; estimating the form of a lower end of the extracted text region; estimating the form of left and right sides of the extracted text region; estimating a diagram constituted in the form of the estimated upper end, lower end, left and right sides, and including a minimum area of the text region; and transforming the text region constituting the estimated diagram into a rectangular diagram using an affine transform.
摘要翻译：提供了补偿文本识别中的失真的方法，其中包括从图像中提取文本区域; 估计提取的文本区域的上端的形式; 估计提取的文本区域的下限的形式; 估计提取的文本区域的左侧和右侧的形式; 估计以估计的上端，下端，左右两侧的形式构成的图，并且包括文本区的最小面积; 以及使用仿射变换将构成估计图的文本区域变换为矩形图。

57. 发明授权

US07660531B2 Remote access unit and radio-over-fiber network using same 失效
标题翻译：远程访问单元和使用相同的光纤网络
公开(公告)号：US07660531B2
公开(公告)日：2010-02-09
申请号：US11607700
申请日：2006-12-01
申请人： Jae-Hoon Lee , Seong-Taek Hwang , Byung-Jik Kim , Gyu-Woong Lee , Hoon Kim , Sang-Ho Kim , Yong-Gyoo Kim , Sung-Kee Kim , Han-Lim Lee
发明人： Jae-Hoon Lee , Seong-Taek Hwang , Byung-Jik Kim , Gyu-Woong Lee , Hoon Kim , Sang-Ho Kim , Yong-Gyoo Kim , Sung-Kee Kim , Han-Lim Lee
IPC分类号： H04B10/24 , H04J4/00 , H04M1/00
CPC分类号： H04B10/25758
摘要： A remote access unit (RAU) apparatus, coupled to a central station (CS) of an RoF network through at least one optical fiber, and which RAU apparatus includes at least one antenna, includes: first and second antenna ports coupled to the at least one antenna; first and second optical fiber ports coupled to the at least one optical fiber; a first coupler for decoupling a first downstream signal of a first duplexing method and a second downstream signal of a second duplexing method, which are input through the first optical fiber port; a circulator for outputting the first downstream signal input from the first coupler to the first antenna port and outputting a first upstream signal of the first duplexing method input from the first antenna port to the second optical fiber port; and a second coupler for outputting the second downstream signal input from the first coupler to the second antenna port and outputting a second upstream signal of the second duplexing method input from the second antenna port to the second optical fiber port.
摘要翻译：一种远程接入单元（RAU）装置，其通过至少一个光纤耦合到RoF网络的中心站（CS），并且所述RAU设备包括至少一个天线，包括：耦合到所述至少一个天线的第一和第二天线端口一个天线耦合到所述至少一个光纤的第一和第二光纤端口; 用于去耦第一双工方法的第一下行信号和通过第一光纤端口输入的第二双工方法的第二下行信号的第一耦合器; 输出从第一耦合器输入的第一下行信号到第一天线端口的循环器，并输出从第一天线端口输入到第二光纤端口的第一双工方式的第一上行信号; 以及第二耦合器，用于将从第一耦合器输入的第二下行信号输出到第二天线端口，并输出从第二天线端口输入到第二光纤端口的第二双工方法的第二上行信号。

58. 发明申请

US20080159743A1 Method and system for controlling remote in a TDD optical repeater 有权
标题翻译：用于在TDD光中继器中控制远端的方法和系统
公开(公告)号：US20080159743A1
公开(公告)日：2008-07-03
申请号：US11983483
申请日：2007-11-09
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： H04J14/02 , H04J14/08
CPC分类号： H04J14/02 , H04J3/0682 , H04W88/085
摘要： A method and apparatus for transmitting data to an Access Point (AP) and a Mobile Station (MS) in a Time Division Duplex (TDD) optical repeater. A main donor generates a control frame for controlling a remote, upon receipt of data from the AP, and transmits the control frame to the remote during a non-downlink transmission period. The remote analyzes the control frame received from the main donor, detects sync information about a downlink signal and an uplink signal, and remote control information from the analyzed control frame, performs a control operation according to the detected remote control information, and generates a status frame for notifying the main donor of the status of the remote upon receipt of data from the MS. The status frame is transmitted from the remote to the main donor during a non-uplink transmission period.
摘要翻译：一种用于向时分双工（TDD）光中继器中的接入点（AP）和移动台（MS）发送数据的方法和装置。在从AP接收到数据时，主要供体生成用于控制远程的控制帧，并且在非下行链路传输周期期间将控制帧发送到远程。遥控器分析从主供体接收到的控制帧，检测关于下行链路信号和上行链路信号的同步信息，以及来自分析的控制帧的遥控信息，根据检测到的遥控信息执行控制操作，并且生成状态框架，用于在从MS接收到数据时通知主要供体的远程状态。在非上行链路传输期间，状态帧从远端发送到主供体。

59. 发明申请

US20070022460A1 Remote access unit and optical network for bidirectional wireless communication using the same 失效
标题翻译：远程访问单元和光网络，用于双向无线通信
公开(公告)号：US20070022460A1
公开(公告)日：2007-01-25
申请号：US11395806
申请日：2006-03-31
申请人： Yong-Gyoo Kim , Seong-Taek Hwang , Byung-Jik Kim , Gyu-Woong Lee , Hoon Kim , Sang-Ho Kim , Sung-Kee Kim , Han-Lim Lee , Jae-Hoon Lee
发明人： Yong-Gyoo Kim , Seong-Taek Hwang , Byung-Jik Kim , Gyu-Woong Lee , Hoon Kim , Sang-Ho Kim , Sung-Kee Kim , Han-Lim Lee , Jae-Hoon Lee
IPC分类号： H04N7/173
CPC分类号： H04L5/26 , H04B10/25758 , H04W16/26
摘要： Disclosed is a remote access unit for transmitting and receiving upstream and downstream data in which channels having different transmission scheme are multiplexed, and an optical network for bi-directional wireless communication using same. The remote access unit includes an antenna for receiving the downstream data and wirelessly transmitting same and for receiving the upstream data and providing same to the remote access unit, a switch for outputting downstream time division channels of the downstream data to the antenna and for receiving upstream time division channels of the upstream data from the antenna, and a controller for controlling the switch in order to prevent the upstream and downstream time division channels from overlapping.
摘要翻译：公开了一种用于发送和接收上行和下行数据的远程访问单元，其中具有不同传输方案的信道被复用，以及用于使用其的双向无线通信的光网络。远程接入单元包括：天线，用于接收下行数据并进行无线发送，并用于接收上行数据并将其提供给远程接入单元;开关，用于向下游天线输出下游数据的下行时分信道，并用于接收上游来自天线的上行数据的时分信道，以及用于控制交换机的控制器，以防止上游和下游时分信道重叠。

60. 发明申请

US20060239303A1 Method of performing periodical synchronization for ensuring start of super frame in residential Ethernet system 审中-公开
标题翻译：确保住宅以太网系统中超帧启动的周期性同步方法
公开(公告)号：US20060239303A1
公开(公告)日：2006-10-26
申请号：US11410422
申请日：2006-04-25
申请人： Jae-Hun Cho , Jong-Ho Yoon , Kwan-Soo Lee , Yun-Je Oh , Jun-Ho Koh , Si-Hai Wang , Sang-Ho Kim
发明人： Jae-Hun Cho , Jong-Ho Yoon , Kwan-Soo Lee , Yun-Je Oh , Jun-Ho Koh , Si-Hai Wang , Sang-Ho Kim
IPC分类号： H04J3/06 , H04J3/12 , H04J3/02
CPC分类号： H04J3/1682 , H04J3/0638
摘要： Disclosed is a method of performing a periodical synchronization at a predetermined transmission link for ensuring a start of a super frame in a residential Ethernet system. The method includes the steps of ensuring a start of a first predetermined super frame at the predetermined transmission link, transmitting Sync frames and Async frames through a predetermined number (N-1) of super frames, in which N is a total number of the super frames, and controlling an Async frame to be transmitted at an end point of the (N-1) super frames in such a manner that a start of a next super frame (Nth super frame) is strictly ensured, thereby maintaining a synchronization for the start of the super frame.
摘要翻译：公开了一种在预定的传输链路上执行周期性同步的方法，以确保在住宅以太网系统中启动超帧。该方法包括以下步骤：确保在预定传输链路上开始第一预定超帧，通过预定数量（N-1）超帧传输同步帧和异步帧，其中N是超级帧的总数帧，并且控制在（N-1）个超帧的终点处发送的异步帧，使得下一个超帧（N ^{超帧）的开始是严格的从而保持超帧开始的同步。}

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