公开(公告)号：US20050141623A1

公开(公告)日：2005-06-30

申请号：US10862610

申请日：2004-06-07

申请人： Jae-Hun Cho ,  Sang-Ho Kim ,  Chan-Yul Kim ,  Jun-Ho Koh ,  Yun-Je Oh

发明人： Jae-Hun Cho ,  Sang-Ho Kim ,  Chan-Yul Kim ,  Jun-Ho Koh ,  Yun-Je Oh

IPC分类号： H04L29/10 ,  H04N7/12 ,  H04N7/24

CPC分类号： H04L12/413 ,  H04L65/607 ,  H04N21/23608 ,  H04N21/4344 ,  H04N21/43632

摘要： Disclosed is a transport stream transmission apparatus, for example an MPEG Motion Picture Experts Group)—transport stream transmission apparatus. The transmission apparatus comprising a transmitter including a first media independent interface to generate a data stream, the data stream having a preamble and at least one transport stream, and a first physical layer device to receive a data frame from the first media independent interface, a back plane board to receive the data frame from the transmitter, and enable distribution of the received data frame to individual subscribers, and a second media independent interface to receive at least one transport stream from the second physical layer device, and enable individual subscribers to received transport stream, wherein the second media independent interface includes a second physical layer device to identify a preamble of the data frame received from the back plane board, perform a clock recovery operation, and generate at least one transport stream of the data frame.

摘要翻译： 公开了传输流传输装置，例如MPEG运动图像专家组） - 传输流传输装置。 传输设备包括发射机，其包括用于生成数据流的第一媒体独立接口，所述数据流具有前导码和至少一个传输流，以及第一物理层设备，用于从所述第一媒体独立接口接收数据帧; 背板接收来自发射机的数据帧，并且使接收到的数据帧能够分配给各个用户;以及第二媒体独立接口，用于从第二物理层设备接收至少一个传输流，并使各个用户能够接收 传输流，其中所述第二媒体独立接口包括第二物理层设备，以识别从所述背板接收的数据帧的前同步码，执行时钟恢复操作，并且生成所述数据帧的至少一个传输流。

公开(公告)号：US20050002670A1

公开(公告)日：2005-01-06

申请号：US10771793

申请日：2004-02-04

申请人： Jong-Kwon Kim ,  Yun-Je Oh ,  Jun-Ho Koh

发明人： Jong-Kwon Kim ,  Yun-Je Oh ,  Jun-Ho Koh

IPC分类号： H01S5/50 ,  G02B6/293 ,  H04J14/02

CPC分类号： H04J14/02 ,  H04B10/506 ,  H04J14/0221

摘要： A multi-wavelength light source unit for optical communication system is disclosed. The light source includes a demultiplexer for demultiplexing a multiplexed light signal into a plurality of lights having different wavelengths and a multiplexer that receives the demultiplexed lights and multiplexes the demultiplexed lights into the multiplexed light signal. Input ports of the multiplexer are respectively port-to-port connectable to each one of a plurality of output ports of the demultiplexer. The light source unit includes a plurality of semiconductor optical amplifiers amplifying the demultiplexed lights output form the demultiplexer, and a plurality of beam splitters for splitting the amplified demultiplexed lights into two parts, so as to provide the respective input ports of the multiplexer with a split part of the lights, while to transmit the other part of the lights out of the beam splitters.

摘要翻译： 公开了一种用于光通信系统的多波长光源单元。 光源包括用于将复用的光信号解复用为具有不同波长的多个光的解复用器，以及接收解复用的光并将解复用的光复用到复用的光信号中的多路复用器。 多路复用器的输入端口分别是可连接到解复用器的多个输出端口中的每一个的端口到端口。 光源单元包括放大从解复用器输出的解复用光的多个半导体光放大器和用于将放大的解复用光分成两部分的多个分束器，以便将多路复用器的相应输入端口分配 部分灯光，同时将其他部分的光线从光束分离器传出。

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：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。

公开(公告)号：US07564877B2

公开(公告)日：2009-07-21

申请号：US11147703

申请日：2005-06-08

申请人： Jae-Hun Cho ,  Jun-Ho Koh ,  Sang-Ho Kim ,  Kwan-Woong Song ,  Young-Hun Joo ,  Yun-Je Oh

发明人： Jae-Hun Cho ,  Jun-Ho Koh ,  Sang-Ho Kim ,  Kwan-Woong Song ,  Young-Hun Joo ,  Yun-Je Oh

IPC分类号： H04J3/02

CPC分类号： H03K19/1776 ,  H03K19/17744

摘要： A field programmable gate array (FPGA) for multiplexing data and enable signals input from a plurality of input ports and outputting the multiplexed signal to one output port is disclosed. The FPGA includes a plurality of memories, which are connected to the input ports, for storing the input data and enable signals, respectively, and outputting one-shot signals at trailing edges of the enable signals; and a finite state machine (FSM) for sequentially reading the data signals stored in the memories in an order of the one-shot signals input from the memories.

摘要翻译： 公开了一种用于多路复用数据并使能从多个输入端口输入的信号并将复用的信号输出到一个输出端口的现场可编程门阵列（FPGA）。 FPGA包括连接到输入端口的多个存储器，用于分别存储输入数据和使能信号，并在使能信号的后沿输出单触发信号; 以及用于按照从存储器输入的单触发信号的顺序顺序读取存储在存储器中的数据信号的有限状态机（FSM）。

公开(公告)号：US07388888B2

公开(公告)日：2008-06-17

申请号：US10861058

申请日：2004-06-04

申请人： Seung-Jin Lee ,  Jae-Hun Cho ,  Yun-Je Oh ,  Jun-Ho Koh

发明人： Seung-Jin Lee ,  Jae-Hun Cho ,  Yun-Je Oh ,  Jun-Ho Koh

IPC分类号： H04J3/04

CPC分类号： H04Q11/0067 ,  H04L12/64 ,  H04Q2011/0064

摘要： A broadcast/communication convergence system and method for transmitting and receiving Ethernet data by an optical network unit (ONU) performing a time division multiplexing (TDM) operation and switching by a network switch. A resultant signal is transmitted to a corresponding subscriber set-top box (SSTB), and data from the SSTB is provided to the network switch. A length of an Ethernet data frame is provided from the network switch, and an encapsulation generates and inserts data length information into an Ethernet data frame, for transmission to the SSTB. The SSTB carries out a TDM operation for a signal transmitted from the ONU, and separates the signal into Ethernet and broadcast data. A framing bit is detected based on a result of the separated signals, the length information is detected. A preamble bit and a start-of-field delimiter (SFD) are inserted into the recognized Ethernet data to recover the original Ethernet data.

摘要翻译： 一种广播/通信会聚系统和方法，用于通过执行时分复用（TDM）操作的光网络单元（ONU）和通过网络交换机切换来发送和接收以太网数据。 结果信号被发送到相应的用户机顶盒（SSTB），并且来自SSTB的数据被提供给网络交换机。 从网络交换机提供一长度的以太网数据帧，封装生成并将数据长度信息插入到以太网数据帧中，以传输到SSTB。 SSTB对从ONU发送的信号进行TDM操作，并将信号分离成以太网和广播数据。 基于分离信号的结果检测成帧位，检测长度信息。 将前导码位和起始字段分隔符（SFD）插入识别的以太网数据中以恢复原始以太网数据。

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：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：US20060174315A1

公开(公告)日：2006-08-03

申请号：US11331989

申请日：2006-01-13

申请人： Kwan-lae Kim ,  Jeong-Rok Park ,  Jeong-Seok Choi ,  Chang-Sup Shim ,  Yun-Je Oh ,  Jun-Ho Koh

发明人： Kwan-lae Kim ,  Jeong-Rok Park ,  Jeong-Seok Choi ,  Chang-Sup Shim ,  Yun-Je Oh ,  Jun-Ho Koh

IPC分类号： H04N7/00 ,  H04N11/00 ,  H04N7/16

CPC分类号： G09B5/02 ,  G09B21/009 ,  H04N21/235 ,  H04N21/435 ,  H04N21/44012 ,  H04N21/84

摘要： A system having a transmitter and a receiver provides sign language video data in a broadcasting-communication convergence system. A transmitter extracts data, to which a sign language is to be applied, from the multimedia data, converts the extracted data into motion data, converts the motion data into an avatar motion schema indicative of avatar motion data, converts the avatar motion schema into metadata, multiplexes the multimedia data and the metadata, and transmits the multiplexed data. A receiver receives the multiplexed data, demultiplexes the received multiplexed data, extracts an avatar motion schema using the metadata, generates sign language video data by controlling a motion of an avatar through the avatar motion schema, multiplexes the sign language video data and the multimedia data, and transmits the multiplexed data to a display unit.

摘要翻译： 具有发射机和接收机的系统在广播通信收敛系统中提供手语视频数据。 发射机从多媒体数据中提取要应用手语的数据，将所提取的数据转换为运动数据，将运动数据转换为表示化身运动数据的化身运动模式，将化身运动模式转换为元数据 复用多媒体数据和元数据，并发送复用数据。 接收器接收多路复用数据，解复用接收的多路复用数据，使用元数据提取化身运动模式，通过化身运动模式控制化身的运动来生成手语视频数据，多路复用手语视频数据和多媒体数据 并将多路复用数据发送到显示单元。

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。