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：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：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：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：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：US06580553B2

公开(公告)日：2003-06-17

申请号：US10046355

申请日：2002-01-14

申请人： Chan-Youl Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Jun-Ho Koh

发明人： Chan-Youl Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Jun-Ho Koh

IPC分类号： H01S300

CPC分类号： H01S3/06754 ,  H01S3/10015 ,  H01S3/1301

摘要： An automatic gain control device of an optical fiber amplifier that outputs a compensation signal to control a gain value of the optical fiber amplifier is disclosed. The device includes: a first optical detector for partially converting an input optical signal to the optical fiber amplifier into a first electrical signal; a second optical detector for partially converting an output optical signal from the optical fiber amplifier into a second electrical signal; a first programmable amplifier having a first gain value set based on a first control signal, the first programmable amplifier inputting the first electrical signal and amplifying it at the first gain value to output a first amplified signal; a second programmable amplifier having a second gain value set based on a second control signal, the second programmable amplifier inputting the second electrical signal and amplifying it at the second gain value to output a second amplified signal; a proportional-integral derivative (PID) for outputting the compensation signal, the compensation signal corresponding to the difference between the power level of the first amplified signal and the power level of the second electrical signal; and, a controller for outputting the second control signal to the second programmable amplifier such that it has the second gain value based on a third gain value and for varying the first gain value of the first programmable amplifier until the first electrical signal and second amplified signal become the same in power level, thereby changing the gain value of the optical fiber amplifier to the third gain value.

摘要翻译： 公开了一种输出补偿信号以控制光纤放大器的增益值的光纤放大器的自动增益控制装置。 该装置包括：第一光学检测器，用于将输入光信号部分地转换成光纤放大器为第一电信号; 第二光学检测器，用于将来自光纤放大器的输出光信号部分地转换成第二电信号; 第一可编程放大器，具有基于第一控制信号设定的第一增益值，第一可编程放大器输入第一电信号并以第一增益值放大第一增益值，以输出第一放大信号; 第二可编程放大器，具有基于第二控制信号设定的第二增益值，第二可编程放大器输入第二电信号并以第二增益值放大第二增益值，以输出第二放大信号; 用于输出所述补偿信号的比例积分微分（PID），所述补偿信号对应于所述第一放大信号的功率电平与所述第二电信号的功率电平之差; 以及控制器，用于将第二控制信号输出到第二可编程放大器，使得其具有基于第三增益值的第二增益值，并且用于改变第一可编程放大器的第一增益值，直到第一电信号和第二放大信号 在功率电平上变得相同，从而将光纤放大器的增益值改变为第三增益值。

公开(公告)号：US07218863B2

公开(公告)日：2007-05-15

申请号：US10638453

申请日：2003-08-11

申请人： Chang-Hyun Lee ,  Chan-Yul Kim ,  Yun-Je Oh ,  Jun-Ho Koh

发明人： Chang-Hyun Lee ,  Chan-Yul Kim ,  Yun-Je Oh ,  Jun-Ho Koh

IPC分类号： H04B10/04

CPC分类号： H04B10/504 ,  H04B10/58

摘要： An optical transmission system for optimizing the bias of a laser diode during an SCM analog optical transmission includes an optical transmitter for converting a baseband electric signal into an optical signal using a laser diode according to the set bias and outputting the optical signal through an optical line, an optical receiver for converting the optical signal transmitted from the optical transmitter into the baseband electric signal, a recovery unit for detecting an error generated according to the bias of the laser diode on the basis of the electric signal converted by the optical receiver, and a bias adjuster for optimally adjusting the bias of the laser diode on the basis of a value of the error detected by the reproducer.

摘要翻译： 一种用于在SCM模拟光传输期间优化激光二极管的偏置的光传输系统包括：光发射机，用于根据设定的偏置，使用激光二极管将基带电信号转换为光信号，并通过光线路输出光信号 用于将从光发送器发送的光信号转换为基带电信号的光接收器，用于根据由光接收器转换的电信号来检测根据激光二极管的偏置产生的误差的恢复单元;以及 偏置调节器，用于基于由再现器检测到的误差的值来最佳地调整激光二极管的偏置。

公开(公告)号：US06829436B2

公开(公告)日：2004-12-07

申请号：US09750365

申请日：2000-12-28

申请人： Jun-Ho Koh ,  Sang-Ho Kim ,  Byung-Jik Kim ,  Kwang-Jin Yang

发明人： Jun-Ho Koh ,  Sang-Ho Kim ,  Byung-Jik Kim ,  Kwang-Jin Yang

IPC分类号： H04J1402

CPC分类号： H04J3/0685 ,  H04J2203/0032 ,  H04J2203/0089 ,  H04L25/0262 ,  H04Q11/0005 ,  H04Q11/0478

摘要： A cross-connect device in an optical network which includes a demultiplexer for demultiplexing an input optical signal by channels; a plurality of arbitrary transmission optical receivers for converting the optical channel signals received from the demultiplexer to electrical signals and for recovering a clock signal and data according to a reference clock signal generated at the transmission rate of the electrical signals; a cross-connect switch for path-routing the electrical signals received from the arbitrary transmission optical receivers; a controller for controlling the path-routing of the cross-connect switch; a plurality of arbitrary transmission optical transmitters for converting the electrical signal received from each output port of the cross-connect switch to an optical signal; and, a multiplexer for multiplexing the optical signals received from the arbitrary transmission optical transmitters onto one stand of optical fiber.

摘要翻译： 一种光网络中的交叉连接装置，包括用于通过信道解复用输入光信号的解复用器; 多个任意传输光接收机，用于将从解复用器接收的光信道信号转换为电信号，并根据以电信号的传输速率产生的参考时钟信号来恢复时钟信号和数据; 交叉连接开关，用于对从任意传输光接收器接收的电信号进行路径路由; 用于控制交叉连接交换机的路径路由的控制器; 多个任意传输光发射机，用于将从交叉连接交换机的每个输出端口接收的电信号转换为光信号; 以及多路复用器，用于将从任意传输光发射机接收的光信号复用到光纤的一个支架上。

公开(公告)号：US08451859B2

公开(公告)日：2013-05-28

申请号：US11384723

申请日：2006-03-20

申请人： Sang-Ho Kim ,  Jun-Ho Koh ,  Kyung-Ho Chae ,  Yun-Je Oh

发明人： Sang-Ho Kim ,  Jun-Ho Koh ,  Kyung-Ho Chae ,  Yun-Je Oh

IPC分类号： H04J3/16

CPC分类号： H04L65/605 ,  H04L12/1854 ,  H04L12/189 ,  H04L29/06027 ,  H04L65/103 ,  H04L65/104 ,  H04L65/4076 ,  H04W4/18 ,  H04W80/00

摘要： A packet type retransmission system for DMB services includes a DMB device for receiving multimedia data from a content provider, for converting the multimedia data to DMB data for DMB transmission, and for transmitting the DMB data. A broadcasting transfer medium transfers the DMB data transmitted through the DMB device. A DMB-IP converter receives the DMB data transferred through the broadcasting transfer media and converts the DMB data to packet based data. An IP based multimedia transmitting device outputs the packet based multimedia data converted through the DMB-IP converter to user devices.

摘要翻译： 用于DMB服务的分组类型重传系统包括用于从内容提供商接收多媒体数据的DMB设备，用于将多媒体数据转换为用于DMB传输的DMB数据，以及用于发送DMB数据。 广播传送介质传送通过DMB设备发送的DMB数据。 DMB-IP转换器接收通过广播传送介质传送的DMB数据，并将DMB数据转换为基于数据包的数据。 基于IP的多媒体发送设备将通过DMB-IP转换器转换的基于分组的多媒体数据输出到用户设备。