公开(公告)号：US07171118B2

公开(公告)日：2007-01-30

申请号：US10410561

申请日：2003-04-09

申请人： Sang-Ho Kim ,  Yun-Je Oh ,  Jun-Ho Koh ,  Byung-Jik Kim

发明人： Sang-Ho Kim ,  Yun-Je Oh ,  Jun-Ho Koh ,  Byung-Jik Kim

IPC分类号： H04J14/00 ,  H04B10/08

CPC分类号： H04Q11/0062 ,  H04Q11/0071 ,  H04Q2011/0039 ,  H04Q2011/0045 ,  H04Q2011/0079 ,  H04Q2011/0088

摘要： Disclosed are an apparatus and a method for shortening a processing time at each node in an optical network. A transmission optical cross-connect (OXC) determines a transmission rate corresponding to the transmission speed of the signal to be transmitted. An optical receiver and an optical transmitter are stabilized by means of the transmission rate. In addition, a transmission OXC transmits the transmission rate to an OXC aligned between the transmission OXC and the receiving OXC, thereby stabilizing the OXC. Each of the OXCs detects the transmission speed of the optical signal to be received so that a time required for converting the transmission speed is reduced.

摘要翻译： 公开了一种缩短光网络中每个节点处理时间的装置和方法。 传输光交叉连接（OXC）确定与要传输的信号的传输速度相对应的传输速率。 光接收机和光发射机通过传输速率稳定。 此外，传输OXC将传输速率传输到在传输OXC和接收OXC之间对齐的OXC，从而使OXC稳定。 每个OXC检测要接收的光信号的传输速度，从而减少转换传输速度所需的时间。

公开(公告)号：US06738553B2

公开(公告)日：2004-05-18

申请号：US09921184

申请日：2001-08-02

申请人： Byung-Jik Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Jun-Ho Koh ,  Sang-Ho Kim

发明人： Byung-Jik Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Jun-Ho Koh ,  Sang-Ho Kim

IPC分类号： G02B600

CPC分类号： G02B6/3582 ,  G02B6/3598

摘要： Disclosed is an opto-electrical cross connect device of high density including a shelf having a plurality of guide rails at its inner portions; a switch motherboard disposed on the rear surface of the shelf; an electric crosspoint switch positioned on the front surface of the switch motherboard; a plurality of switch connectors positioned on the front surface of the switch motherboard; an optical transceiver board mounted in the guide rail of the shelf; and, a transceiver connector disposed at the rear end of the optical transceiver board for connecting to the switch connector of the switch motherboard.

摘要翻译： 公开了一种高密度的光电交叉连接装置，包括在其内部具有多个导轨的搁板; 设置在搁板后表面上的开关母板; 位于开关母板的前表面上的电交叉点开关; 位于开关母板的前表面上的多个开关连接器; 安装在搁架的导轨中的光收发板; 以及设置在光收发板的后端的收发器连接器，用于连接到开关母板的开关连接器。

公开(公告)号：US07130543B2

公开(公告)日：2006-10-31

申请号：US10043617

申请日：2002-01-10

申请人： Kyu-Hyoung Cho ,  Yun-Je Oh ,  Jun-Ho Koh ,  Byung-Jik Kim ,  Chan-Youl Kim ,  Chang-Hyun Lee

发明人： Kyu-Hyoung Cho ,  Yun-Je Oh ,  Jun-Ho Koh ,  Byung-Jik Kim ,  Chan-Youl Kim ,  Chang-Hyun Lee

IPC分类号： H04B10/00

CPC分类号： H04B10/6932

摘要： A bit rate-independent optical receiver ensures transparency with respect to changes of the transmission format and its associated bit rate in relation to an optical communications system. The optical receiver includes an opto-electric converter for converting an input optical signal into an electric signal, an amplifier circuit for amplifying the electrical signal, a bit rate-sensing circuit for generating a sensing signal with a voltage level determined on the basis of the bit rate of the electrical signal, a bit rate-recognition circuit for generating a recognition signal further amplified from the sensing signal, and a clock/data recovery circuit for reproducing a clock signal and data from the amplified electrical signal in accordance with a control signal. A controller determines a bit rate corresponding to the voltage level of the recognition signal by referring to a look-up table of the bit rate to the voltage level and provides the clock/data recovery circuit with the control signal representative of the bit rate.

公开(公告)号：US07412164B2

公开(公告)日：2008-08-12

申请号：US10425699

申请日：2003-04-29

申请人： Jeong-Seok Choi ,  Yun-Je Oh ,  Jun-Ho Koh ,  Chang-Hyun Lee ,  Byung-Jik Kim ,  Jeong-Rok Park

发明人： Jeong-Seok Choi ,  Yun-Je Oh ,  Jun-Ho Koh ,  Chang-Hyun Lee ,  Byung-Jik Kim ,  Jeong-Rok Park

IPC分类号： H04B10/00

CPC分类号： H04L1/22

摘要： A photoelectric cross-connect system for an optical-communication system minimizes service recovery time when an error is generated. A plurality of nodes are connected by an optical-transmission line wherein each nodes automatically recognizes a data rate of an input signal and communicates over a redundant channel with an adjacent node when there is a certain type of error. An optical-receiving unit receives an optical signal performs O/E conversion. A main optical-transmitting unit recovers clock and data signals according to the converted signal and sets a data rate according to the converted signal for subsequent transmission; a redundant optical-transmitting unit recovers a clock and data according to the converted signal and sets a data rate according to the converted signal for subsequent transmission A switch provides selectively connection state between the optical-receiving unit and the main optical-transmitting unit and between the optical-receiving unit and the redundant optical-transmitting unit.

摘要翻译： 用于光通信系统的光电交叉连接系统在产生错误时将服务恢复时间最小化。 多个节点通过光传输线连接，其中每个节点自动识别输入信号的数据速率，并且当存在某种类型的错误时，通过冗余信道与相邻节点进行通信。 光接收单元接收执行O / E转换的光信号。 主光传输单元根据转换的信号恢复时钟和数据信号，并根据转换的信号设置数据速率用于随后的传输; 冗余光传输单元根据转换的信号恢复时钟和数据，并根据转换的信号设置数据速率用于后续发送。A交换机选择性地提供光接收单元和主光传输单元之间的连接状态，以及 光接收单元和冗余光发射单元。

公开(公告)号：US07120848B2

公开(公告)日：2006-10-10

申请号：US10358535

申请日：2003-02-05

申请人： Yong-Deok Kim ,  Yun-Je Oh ,  Jun-Ho Koh ,  Han-Lim Lee ,  Byung-Jik Kim ,  Chan-Youl Kim

发明人： Yong-Deok Kim ,  Yun-Je Oh ,  Jun-Ho Koh ,  Han-Lim Lee ,  Byung-Jik Kim ,  Chan-Youl Kim

IPC分类号： H03M13/00

CPC分类号： H04L1/0047

摘要： The provided forward error correction (FEC) apparatus for a transmission system includes a low pass filter (LPF) passing only a low frequency component of an input signal having a predetermined transmission rate; an AC power meter converting an energy value of an signal output from the LPF into a DC voltage value; a logarithm amplifier converting the exponentially varying DC voltage value from the AC power meter into a linear logarithmically varying DC voltage value; a digital signal processor (DSP) determining the transmission rate of the input signal according to a magnitude of the linear DC voltage value and outputting a control signal according to the transmission rate; a clock generator receiving the control signal and generating a clock signal according to the control signal; and a FEC module receiving the clock signal and performing FEC operation on the received signal. A method for FEC is also provided.

摘要翻译： 所提供的用于传输系统的前向纠错（FEC）装置包括仅通过具有预定传输速率的输入信号的低频分量的低通滤波器（LPF）; 将从LPF输出的信号的能量值转换为DC电压值的AC功率计; 对数放大器将来自AC功率计的指数变化的DC电压值转换成线性对数变化的DC电压值; 数字信号处理器（DSP），根据线性DC电压值的大小确定输入信号的传输速率，并根据传输速率输出控制信号; 接收所述控制信号并根据所述控制信号产生时钟信号的时钟发生器; 以及FEC模块，接收时钟信号并对接收到的信号执行FEC操作。 还提供了一种用于FEC的方法。

公开(公告)号：US06944405B2

公开(公告)日：2005-09-13

申请号：US09953637

申请日：2001-09-17

申请人： Han-Lim Lee ,  Byung-Jik Kim ,  Jun-Ho Koh ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Han-Lim Lee ,  Byung-Jik Kim ,  Jun-Ho Koh ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H04B10/00 ,  H04B10/27 ,  H04Q3/52 ,  H04Q11/00 ,  H04Q11/04 ,  H04B10/08 ,  H04B17/00

CPC分类号： H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0039 ,  H04Q2011/0045

摘要： This invention provides an optical transmission with a demultiplexer for demultiplexing an input optical signal into optical signals of different channels and a multiplexer for multiplexing the optical signals outputted from the demultiplexer. The optical cross-connect device includes: N BICDR (Bit Rate Independent Clock and Data Recovery) receivers each for receiving the associated optical signals outputted from the demultiplexer, for converting the associated optical signal into an electrical signal and reproducing clocks and data based on the bit rate of the electrical signal; a switchboard with a cross-connect switch for receiving output signals from the respective N BICDR receiver; N bit rate discriminating units for receiving the output signals from the N BICDR receivers, respectively, thereby outputting bit rate discriminating signals associated with the N BICDR receivers, respectively; a temperature sensing unit for outputting a temperature sensing signal; and, a central processing unit for receiving the bit rate discriminating signals from the N bit rate discriminating unit, along with the temperature sensing signal from the temperature sensing unit, for compensating each of the received bit rate discriminating signals with a temperature-dependent bit rate value read out, based on the temperature sensing signal, from a memory, and for controlling the bit rate of the associated BICDR receiver based on the compensated bit rate.

摘要翻译： 本发明提供了一种具有解复用器的光传输器，用于将输入光信号解复用为不同信道的光信号，以及复用器，用于复用从解复用器输出的光信号。 光交叉设备包括：N个BICDR（比特率独立时钟和数据恢复）接收机，每个接收器用于接收从解复用器输出的相关联的光信号，用于将相关联的光信号转换成电信号，并基于该信号再现时钟和数据 比特率的电信号; 具有交叉连接开关的交换机，用于接收来自相应N BICDR接收机的输出信号; N比特率鉴别单元，用于分别从N个BICDR接收机接收输出信号，从而分别输出与N个BICDR接收机相关联的比特率鉴别信号; 用于输出温度感测信号的温度检测单元; 以及用于从温度感测单元接收来自N比特率鉴别单元的比特率鉴别信号的中央处理单元，用于以温度依赖比特率对每个接收的比特率鉴别信号进行补偿 基于温度感测信号从存储器读出，并且用于基于补偿的比特率来控制相关联的BICDR接收器的比特率。

公开(公告)号：US08594424B2

公开(公告)日：2013-11-26

申请号：US12632118

申请日：2009-12-07

申请人： Seong-Taek Hwang ,  Sang-Wook Oh ,  Hyun-Soo Kim ,  Sang-Ho Kim ,  Hee-Min Kwon ,  Yun-Je Oh ,  Byung-Jik Kim

发明人： Seong-Taek Hwang ,  Sang-Wook Oh ,  Hyun-Soo Kim ,  Sang-Ho Kim ,  Hee-Min Kwon ,  Yun-Je Oh ,  Byung-Jik Kim

IPC分类号： G06K9/34 ,  G06K9/00

CPC分类号： H04N5/225 ,  G06K9/228 ,  G06K9/723 ,  G06K2209/01

摘要： An apparatus and method for recognizing characters of an image captured using a camera in a mobile terminal are provided, wherein an image of a signboard is captured, a text area is extracted from the captured image of the signboard, characters are recognized from the extracted text area, similar characters up to a predetermined priority level are generated for each recognized character of the extracted text area, location information of an area within a predetermined range from a current position of a user is acquired, store names are extracted from the location information, text is generated by combining the similar characters according to weights, the text are compared with the extracted store names, and a comparison result is output.

摘要翻译： 提供一种用于识别在移动终端中使用相机拍摄的图像的字符的装置和方法，其中捕获招牌的图像，从所述招牌的所捕获的图像中提取文本区域，从所提取的文本中识别字符 为所提取的文本区域的每个识别字符生成直到预定优先级的类似字符，获取来自用户的当前位置的预定范围内的区域的位置信息，从位置信息中提取存储名称， 通过根据权重组合相似的字符来生成文本，将文本与提取的商店名称进行比较，并输出比较结果。

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。

公开(公告)号：US20080219670A1

公开(公告)日：2008-09-11

申请号：US12074999

申请日：2008-03-06

申请人： Sang-Ho Kim ,  Seong-Taek Hwang ,  Yun-Je Oh ,  Byung-Jik Kim

发明人： Sang-Ho Kim ,  Seong-Taek Hwang ,  Yun-Je Oh ,  Byung-Jik Kim

IPC分类号： H04B10/00 ,  H04B10/24

CPC分类号： H04B10/25758

摘要： Disclosed is an RoF system providing an HD wireless communication service. The RoF system includes the base station for transmitting and receiving each of the TDD/FDD individual signals and TDD/FDD combined signals, channel-combining downstream signals for a TDD scheme with downstream signals for an FDD scheme, and generating TDD/FDD mode control signals; a base station donor for receiving downstream RF signals from the base station, converting the resultant signals into downstream optical signals, outputting the converted signals, and delivering upstream optical signals, which are input to the remote station from the wireless terminals, to the base station; and the remote station for switching a corresponding duplexing mode operation according to wireless service channel states of the wireless terminals, converting the downstream optical signals transmitted from the base station donor into service RF signals, amplifying the converted service RF signals, and providing the amplified service RF signals to the wireless terminals through antennas.

摘要翻译： 公开了提供HD无线通信服务的RoF系统。 RoF系统包括用于发送和接收每个TDD / FDD单独信号和TDD / FDD组合信号的基站，用于TDD方案的下行信号与用于FDD方案的下行信号的信道合并，以及生成TDD / FDD模式控制 信号; 用于从基站接收下行RF信号的基站施加器，将所得到的信号转换成下行光信号，输出转换的信号，以及将从远端站输入的上行光信号从无线终端传送到基站 ; 以及远程站，用于根据无线终端的无线服务信道状态切换对应的双工模式操作，将从基站捐赠者发送的下行光信号转换成服务RF信号，放大转换后的服务RF信号，并提供放大服务 RF信号通过天线到无线终端。

公开(公告)号：US08417116B2

公开(公告)日：2013-04-09

申请号：US12074999

申请日：2008-03-06

申请人： Sang-Ho Kim ,  Seong-Taek Hwang ,  Yun-Je Oh ,  Byung-Jik Kim

发明人： Sang-Ho Kim ,  Seong-Taek Hwang ,  Yun-Je Oh ,  Byung-Jik Kim

IPC分类号： H04B10/00 ,  H04B10/24

CPC分类号： H04B10/25758

摘要： Disclosed is an RoF system providing an HD wireless communication service. The RoF system includes the base station for transmitting and receiving each of the TDD/FDD individual signals and TDD/FDD combined signals, channel-combining downstream signals for a TDD scheme with downstream signals for an FDD scheme, and generating TDD/FDD mode control signals; a base station donor for receiving downstream RF signals from the base station, converting the resultant signals into downstream optical signals, outputting the converted signals, and delivering upstream optical signals, which are input to the remote station from the wireless terminals, to the base station; and the remote station for switching a corresponding duplexing mode operation according to wireless service channel states of the wireless terminals, converting the downstream optical signals transmitted from the base station donor into service RF signals, amplifying the converted service RF signals, and providing the amplified service RF signals to the wireless terminals through antennas.

摘要翻译： 公开了提供HD无线通信服务的RoF系统。 RoF系统包括用于发送和接收每个TDD / FDD单独信号和TDD / FDD组合信号的基站，用于TDD方案的下行信号与用于FDD方案的下行信号的信道合并，以及生成TDD / FDD模式控制 信号; 用于从基站接收下行RF信号的基站施加器，将所得到的信号转换成下行光信号，输出转换的信号，以及将从远端站输入的上行光信号从无线终端传送到基站 ; 以及远程站，用于根据无线终端的无线服务信道状态切换相应的双工模式操作，将从基站捐赠者发送的下行光信号转换成服务RF信号，放大转换后的服务RF信号，并提供放大服务 RF信号通过天线到无线终端。