利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

52 条记录 (耗时 0.036 秒)

    Duobinary optical transmission apparatus using a semiconductor optical amplifier
    1.
    发明授权
    Duobinary optical transmission apparatus using a semiconductor optical amplifier 失效
    使用半导体光放大器的二元光传输装置

    公开(公告)号：US07257330B2

    公开(公告)日：2007-08-14

    申请号：US10691359

    申请日：2003-10-22

    申请人： Gyu-Woong Lee ,  Sung-Kee Kim ,  Seong-Taek Hwang ,  Yun-Je Oh

    发明人： Gyu-Woong Lee ,  Sung-Kee Kim ,  Seong-Taek Hwang ,  Yun-Je Oh

    IPC分类号： H04B10/04 ,  H04B10/12 ,  G02F1/01 ,  G02F1/03

    CPC分类号： H04B10/25137 ,  H04B10/505 ,  H04B10/5055 ,  H04B10/5167

    摘要： Disclosed is a duobinary optical transmission apparatus using a semiconductor optical amplifier (SOA). The duobinary optical transmission apparatus includes a light source for generating a carrier wave; a duobinary precoder for encoding an input (non return to zero) electric signal; a semiconductor optical amplification unit to amplify the encoded signal from the duobinary precoder, wherein the amplification unit receives an optical amplification gain difference that varies with a bias current combined with the encoded signal; and an optical band pass filter for receiving a phase-modulated optical signal from the semiconductor optical amplification unit, filtering the received optical signal to a prescribed bandwidth, and thereby generates a duobinary optical signal.

    摘要翻译： 公开了使用半导体光放大器（SOA）的二元光传输装置。 二元光传输装置包括用于产生载波的光源; 用于对输入（不归零）电信号进行编码的二进制预编码器; 半导体光放大单元，用于放大来自双二进制预编码器的编码信号，其中放大单元接收随着与编码信号组合的偏置电流而变化的光放大增益差; 以及光学带通滤波器，用于从半导体光放大单元接收相位调制的光信号，将接收到的光信号过滤到规定的带宽，从而产生双二进制的光信号。

    ROF link apparatus capable of stable TDD wireless service
    2.
    发明申请
    ROF link apparatus capable of stable TDD wireless service 失效
    能够稳定TDD无线服务的ROF链路装置

    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。

    Optical transmission device
    4.
    发明申请
    Optical transmission device 审中-公开
    光传输装置

    公开(公告)号：US20050058461A1

    公开(公告)日：2005-03-17

    申请号：US10843233

    申请日：2004-05-10

    申请人： Han-Lim Lee ,  Hoon Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Sung-Kee Kim ,  Gyu-Woong Lee

    发明人： Han-Lim Lee ,  Hoon Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Sung-Kee Kim ,  Gyu-Woong Lee

    IPC分类号： G02F1/035 ,  H04B10/2507 ,  H04B10/2513 ,  H04B10/2537 ,  H04B10/516 ,  H04B10/61 ,  H04B10/04

    CPC分类号： H04B10/505 ,  H04B10/5055 ,  H04B10/5167

    摘要： A duobinary optical transmission device that uses a duobinary optical transmission technique is disclosed. The duobinary optical transmission device may use an X-cut Mach-Zehnder interferometer type modulator. The duobinary optical transmission device includes a light source that outputs a carrier wave. A duobinary encoder encodes an input non-return-to-zero (NRZ) electrical signal. A low pass filter (LPF) converts the encoded signal into a 3-level electrical signal. An optical intensity modulator modulates the phase and light intensity of the carrier wave according to the 3-level electrical signal and outputs a 2-level optical duobinary signal. The optical intensity modulator may be an X-cut optical intensity modulator including a substrate; an optical waveguide formed on the substrate, and an electrode for applying an electric field.

    摘要翻译： 公开了一种使用双二进制光传输技术的双向光传输装置。 双向光传输装置可以使用X切割马赫 - 曾德干涉仪型调制器。 二元光传输装置包括输出载波的光源。 二进制编码器对输入的不归零（NRZ）电信号进行编码。 低通滤波器（LPF）将编码信号转换为3级电信号。 光强调制器根据3电平电信号调制载波的相位和光强，并输出2电平的光双二进制信号。 光强度调制器可以是包括衬底的X切割光强度调制器; 形成在基板上的光波导和用于施加电场的电极。

    ROF link apparatus capable of stable TDD wireless service
    5.
    发明授权
    ROF link apparatus capable of stable TDD wireless service 失效
    能够稳定TDD无线服务的ROF链路装置

    公开(公告)号：US07733825B2

    公开(公告)日：2010-06-08

    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： H04W4/00 ,  H04L12/56

    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。

    Bi-directional add/drop node
    6.
    发明申请
    Bi-directional add/drop node 审中-公开
    双向添加/删除节点

    公开(公告)号：US20050141894A1

    公开(公告)日：2005-06-30

    申请号：US10860717

    申请日：2004-06-03

    申请人： Sung-Kee Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Sung-Bum Park

    发明人： Sung-Kee Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Sung-Bum Park

    IPC分类号： H04B10/03 ,  H04B10/00 ,  H04B10/038 ,  H04B10/07 ,  H04B10/079 ,  H04B10/2507 ,  H04B10/275 ,  H04B10/29 ,  H04J14/02

    CPC分类号： H04J14/0227 ,  H04J14/0208 ,  H04J14/0216 ,  H04J14/0241 ,  H04J14/0283

    摘要： A bi-directional add/drop node employed in a bi-directional path-switching network linked by an optical fiber in a loop form is disclosed. The bi-directional add/drop node has a first terminal point and a second terminal point for receiving channels over the optical fiber such that odd channels are inputted through the first terminal point are outputted through the second terminal point and even channels are inputted through the second terminal point are outputted through the first terminal point. The bi-directional add/drop node comprises, a circulation section for circulating the even and odd channels in a predetermined direction, a first input-output section located between the circulation section and the first terminal point wherein the first input-output section outputs the odd channels inputted from the first terminal point to the circulation section through a first input line and outputs the even channels inputted from the circulation section to the first terminal point through a first output line, and a second input-output section positioned between the circulation section and the second terminal point, wherein the second input-output section outputs the even channels inputted from the second terminal point to the circulation section through a second input line and outputs the odd channels inputted from the circulation section to the second terminal point through a second output line.

    摘要翻译： 公开了一种在由光纤以环形形式链接的双向路径交换网络中采用的双向加/减节点。 双向分插节点具有用于在光纤上接收信道的第一终端点和第二终端点，使得通过第一终端点输入奇数信道，并通过第二终端点输入偶数信道 第二终点通过第一终点输出。 双向分插节点包括：循环部分，用于沿预定方向循环偶数和奇数通道;第一输入 - 输出部分，位于循环部分和第一终点之间，其中第一输入 - 输出部分输出 通过第一输入线从第一终端点输入到循环部的奇数通道，并且通过第一输出线将从循环部输入的偶数通道输出到第一终点;以及位于循环部之间的第二输入输出部 和第二终点，其中第二输入 - 输出部分通过第二输入线将从第二终端点输入的偶数通道输出到循环部分，并且通过第二输出部分将从循环部分输入的奇数通道输出到第二终点 输出线。

    Duobinary optical transmission apparatus
    7.
    发明授权
    Duobinary optical transmission apparatus 失效
    双色光传输​​装置

    公开(公告)号：US07362978B2

    公开(公告)日：2008-04-22

    申请号：US10458150

    申请日：2003-06-10

    申请人： Sung-Kee Kim ,  Han-Lim Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

    发明人： Sung-Kee Kim ,  Han-Lim Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

    IPC分类号： H04B10/04 ,  H04B10/12

    CPC分类号： H04B10/503 ,  H04B10/505 ,  H04B10/5055 ,  H04B10/5167

    摘要： Disclosed is a duobinary optical transmission apparatus. The duobinary optical transmission apparatus uses the crossed phase characteristics of a duobinary signal without using a feedback-type precoder and an electric LPF, and is thereby not affected by Pseudo-Random Bit Sequence (PRBS), and is very resistant to wavelength division characteristics. In addition to a drive amplifier, a Mach-Zehnder-interferometer-type optical intensity modulator (MZ MOD), and a laser source for generating a carrier wave, the duobinary optical transmission apparatus further includes a toggle flip-flop (T.FF) and an AND gate to separate a group of ‘1’ from input data signal in such a way that the input data signal is modulated to make each signal have a different phase.

    摘要翻译： 公开了一种二元光传输装置。 双二进制光传输装置使用双二进制信号的交叉相位特性，而不使用反馈型预编码器和电LPF，因此不受伪随机比特序列（PRBS）的影响，并且非常耐波分复用特性。 除了驱动放大器，马赫 - 曾德干涉仪型光强度调制器（MZ MOD）和用于产生载波的激光源之外，双二进制光传输装置还包括一个切换触发器（T.FF） 以及与门分离一组“1”与输入数据信号，使得输入数据信号被调制以使每个信号具有不同的相位。

    Precoder and optical duo-binary transmission apparatus using the same
    9.
    发明授权
    Precoder and optical duo-binary transmission apparatus using the same 失效
    预编码器和光二进制二进制传输装置使用

    公开(公告)号：US07193539B2

    公开(公告)日：2007-03-20

    申请号：US10807048

    申请日：2004-03-23

    申请人： Sung-Kee Kim ,  Han-Lim Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

    发明人： Sung-Kee Kim ,  Han-Lim Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

    IPC分类号： H03M5/00

    CPC分类号： H03M5/06 ,  G11B20/10 ,  H03M13/00

    摘要： A precoder for an optical duo-binary transmission apparatus disposing the precoder before a time division multiplexer includes a judgment unit for judging whether an odd number or even number of ‘1’s exist in data input signals of N channels inputted at an nth time of channel input. Further included in the precoder is a toggle unit for toggling an output signal of the judgment unit when the judgment is odd, and for determining an output value for one of the channels. The precoder also has an output unit for determining output values of other channels according to a respective data input signal and a predetermined channel from among the N channels.

    摘要翻译： 用于在时分多路复用器之前配置预编码器的光二元传输装置的预编码器包括判断单元，用于判断是否存在在n第n个输入的N个信道的数据输入信号中的奇数或偶数个“1” 频道输入时间。 进一步包括在预编码器中的是用于当判断为奇数时用于切换判断单元的输出信号并且用于确定一个通道的输出值的切换单元。 预编码器还具有输出单元，用于根据相应的数据输入信号和N个信道中的预定信道来确定其它信道的输出值。