公开(公告)号：US06724219B1

公开(公告)日：2004-04-20

申请号：US09882499

申请日：2001-06-15

Applicant: Chun-Sup Kim ,  Ara Bicakci ,  Cormac S. Conroy ,  Sang-Soo Lee

Inventor： Chun-Sup Kim ,  Ara Bicakci ,  Cormac S. Conroy ,  Sang-Soo Lee

IPC: H04B303

CPC classification number: H04L25/0278 ,  H04L1/0001 ,  H04L25/028

Abstract: A line driver for coupling a data transceiver to a transmission line having a load impedance via a transformer with a turns ratio of 1:n includes an input port for receiving an input signal voltage from the data transceiver, an output port for supplying an output signal voltage to the transformer, and an amplifier circuit for amplifying the input signal voltage. The amplifier circuit includes a first output stage, a second output stage coupled to the output port, an output resistor coupled to the first output stage, a feedback path from the first output stage to an input of the amplifier circuit, and a line matching network coupled between the first output stage and the second output stage, for compensating variations in the load impedance, so that a synthesized output impedance of the line driver substantially matches an actual load impedance Z of the transmission line.

Abstract translation: 用于将数据收发器耦合到具有匝数比为1：n的变压器的具有负载阻抗的传输线的线路驱动器包括用于从数据收发器接收输入信号电压的输入端口，用于提供输出信号的输出端口 变压器的电压和用于放大输入信号电压的放大器电路。 放大器电路包括第一输出级，耦合到输出端的第二输出级，耦合到第一输出级的输出电阻，从第一输出级到放大器电路的输入的反馈路径，以及线匹配网络 耦合在第一输出级和第二输出级之间，用于补偿负载阻抗的变化，使得线路驱动器的合成输出阻抗基本上与传输线的实际负载阻抗Z匹配。

公开(公告)号：US06603356B1

公开(公告)日：2003-08-05

申请号：US10047960

申请日：2002-01-14

Applicant: Chun-Sup Kim ,  Ara Bicakci ,  Sang-Soo Lee

Inventor： Chun-Sup Kim ,  Ara Bicakci ,  Sang-Soo Lee

IPC: H03F326

CPC classification number: H03F1/308 ,  H03F3/3064

Abstract: A method and circuit control a quiescent current of an amplifier including a preamplifier, error amplifiers, and output devices driven by the error amplifiers, the error amplifiers having an input-referred offset voltage. The method includes (a) applying a calibration voltage to an input of the error amplifiers, (b) calibrating a quiescent current of the output devices by changing the calibration voltage so that the calibrated quiescent current has a predetermined current value, the calibration voltage corresponding to the calibrated quiescent current being set as a correction voltage, and (c) operating the amplifier with the correction voltage applied to the input of the error amplifiers. The circuit includes a correction voltage generator supplying a correction voltage to the error amplifier input, a quiescent current detector detecting the quiescent current, and a calibration circuit adjusting the correction voltage so that the quiescent current is calibrated to a predetermined current value.

Abstract translation: 一种方法和电路控制包括由误差放大器驱动的前置放大器，误差放大器和输出装置的放大器的静态电流，误差放大器具有输入参考偏移电压。 该方法包括（a）将校准电压施加到误差放大器的输入端，（b）通过改变校准电压来校准输出装置的静态电流，使得校准的静态电流具有预定的电流值，校准电压对应 将校正的静态电流设置为校正电压，以及（c）使用施加到误差放大器的输入的校正电压来操作放大器。 该电路包括校正电压发生器，其向误差放大器输入端提供校正电压，静态电流检测器检测静态电流;校准电路调节校正电压，使得静态电流被校准到预定电流值。

公开(公告)号：US06498534B1

公开(公告)日：2002-12-24

申请号：US09882497

申请日：2001-06-15

Applicant: Chun-Sup Kim ,  Sang-Soo Lee

Inventor： Chun-Sup Kim ,  Sang-Soo Lee

IPC: H03G320

CPC classification number: H03F1/025 ,  H03F1/0277 ,  H03G3/3026

Abstract: A variable-gain amplifier circuit includes an input port, an output port, and first and second amplifiers coupled therebetween. The first amplifier includes a first amplifier path having a first amplification factor, effective when the input signal has a voltage level in a first range, and a second amplifier path having a second amplification factor greater than the first amplification factor, effective when the input signal has a voltage level in a second range including voltages of a first polarity greater than that in the first range. The second amplifier includes a third amplifier path having the first amplification factor, effective when the input signal has a voltage level in a third range, and a fourth amplifier path having the second amplification factor, effective when the input signal has a voltage level in a fourth range including voltages of a second polarity greater than that in the third range.

Abstract translation: 可变增益放大器电路包括输入端口，输出端口以及耦合在其间的第一和第二放大器。 第一放大器包括具有第一放大因子的第一放大器路径，当输入信号具有在第一范围内的电压电平时有效;以及第二放大器路径，具有大于第一放大因子的第二放大系数，当输入信号 具有包括第一极性大于第一范围的电压的第二范围内的电压电平。 第二放大器包括具有第一放大因子的第三放大器路径，当输入信号具有第三范围内的电压电平时有效;以及第四放大器路径，具有第二放大因子，当输入信号具有第 第四范围包括大于第三范围的第二极性的电压。

公开(公告)号：US20140079401A1

公开(公告)日：2014-03-20

申请号：US14118922

申请日：2012-05-25

Applicant: Han-Hyub Lee ,  Jie-Hyun Lee ,  Eon-Sang Kim ,  Sang-Soo Lee

Inventor： Han-Hyub Lee ,  Jie-Hyun Lee ,  Eon-Sang Kim ,  Sang-Soo Lee

IPC: H04B10/079 ,  H04J14/02

CPC classification number: H04J14/0242 ,  H04B10/0795 ,  H04B10/2587 ,  H04J14/02 ,  H04J2014/0253

Abstract: A wavelength-division multiplexing optical communication system and a method for measuring optical performance of an output signal for the system. The optical communication system includes: a service-provider device; a local node; and a plurality of subscriber devices. The service-provider device includes: a plurality of first optical transceivers; a first optical multiplexer/demultiplexer (OD/OM) connected to the plurality of first optical transceivers; and a seed-light source providing seed light. Each subscriber device includes a second optical transceiver. The local node connects the service-provider device and the plurality of subscriber devices to each other using a DWDM link comprising: a second multiplexer/demultiplexer (OD/OM); and a single-mode optical fiber for transmission. Here, the optical intensity of an output signal of the second optical transceiver is determined by compensating for the value of the loss caused when the output signal passes through the second OD/OM of the local node.

Abstract translation: 一种波分复用光通信系统和用于测量该系统的输出信号的光学性能的方法。 光通信系统包括：服务提供者设备; 一个本地节点; 和多个订户设备。 服务提供者设备包括：多个第一光收发器; 连接到所述多个第一光收发器的第一光复用器/解复用器（OD / OM）; 和提供种子光的种子光源。 每个用户设备包括第二光收发器。 本地节点使用DWDM链路将服务提供商设备和多个用户设备彼此连接，包括：第二多路复用器/解复用器（OD / OM）; 和用于传输的单模光纤。 这里，通过补偿当输出信号通过本地节点的第二OD / OM时引起的损耗的值来确定第二光收发器的输出信号的光强度。

公开(公告)号：US08243223B2

公开(公告)日：2012-08-14

申请号：US12649892

申请日：2009-12-30

Applicant: Sang-Soo Lee

Inventor： Sang-Soo Lee

IPC: G02F1/1333

CPC classification number: G02F1/133308

Abstract: A liquid crystal display device includes a liquid crystal panel; a backlight unit disposed under the liquid crystal panel and including a light source and an optical sheet, the optical sheet including a protrusion extending from two opposite sides; and a bottom frame under the backlight unit and including a counter part, the counter part including an opening such that the protrusion is inserted into the opening.

Abstract translation: 液晶显示装置包括液晶面板; 设置在所述液晶面板的下方并包括光源和光学片的背光单元，所述光学片包括从两个相对侧延伸的突出部; 以及在所述背光单元下方的底框，并且包括对置部，所述对置部包括开口，使得所述突起插入所述开口中。

公开(公告)号：US20120163819A1

公开(公告)日：2012-06-28

申请号：US13334108

申请日：2011-12-22

Applicant: Sil-Gu MUN ,  Eui-Suk Jung ,  Sang-Soo Lee

Inventor： Sil-Gu MUN ,  Eui-Suk Jung ,  Sang-Soo Lee

IPC: H04J14/00

CPC classification number: H04J14/0282 ,  H04B10/25753 ,  H04J14/0257 ,  H04W88/08

Abstract: A data transmission apparatus for use in a separate-type base station is provided. The data transmission apparatus includes: a digital unit configured to generate first data that includes transmission method information indicating a selected transmission method and data to be transmitted; a time-division synchronization control unit configured to, in response to the selected transmission method being time-division multiplexing (TDM), generate second data by including synchronization information for transmitting the first data using TDM in the first data; and a wavelength conversion unit configured to convert at least one of the first data and the second data into one or more wavelength optical signals using a predefined wavelength or a predefined group of wavelengths and transmit the wavelength optical signals to one or more radio stations.

Abstract translation: 提供了一种用于分离式基站中的数据传输装置。 数据发送装置包括：数字单元，被配置为生成包括指示所选择的发送方法和要发送的数据的发送方法信息的第一数据; 时分同步控制单元，被配置为响应于所选择的传输方法是时分复用（TDM），通过在第一数据中包括使用TDM发送第一数据的同步信息来生成第二数据; 以及波长转换单元，被配置为使用预定波长或预定波长组将所述第一数据和所述第二数据中的至少一个转换成一个或多个波长光信号，并将所述波长光信号发射到一个或多个无线电台。

公开(公告)号：US20050141582A1

公开(公告)日：2005-06-30

申请号：US10880766

申请日：2004-06-28

Applicant: Sang-Soo Lee ,  Heuk Park ,  Hyunwoo Cho ,  Sang-Kyu Lim ,  Je-Soo Ko

Inventor： Sang-Soo Lee ,  Heuk Park ,  Hyunwoo Cho ,  Sang-Kyu Lim ,  Je-Soo Ko

IPC: H04B10/04 ,  G02F2/00 ,  H01S3/067 ,  H01S3/097 ,  H01S3/30 ,  H03D9/00 ,  H04B10/145

CPC classification number: H01S3/302 ,  G02F2/002 ,  H01S3/067 ,  H03D9/00 ,  H04B10/50

Abstract: An apparatus and a method for generating an optical carrier is disclosed. The apparatus includes: a light source generating a pump light; a SBS generator for stimulated Brillouin scattering the pump light to generate a stokes light from the light source; an attenuator for controlling an amplitude of the pump light from the light source to generate an amplitude controlled pump light; and a detector for heterodyne beating the stokes light and the amplitude controlled pump light to generate an optical carrier.

Abstract translation: 公开了一种用于产生光学载体的装置和方法。 该装置包括：产生泵浦光的光源; 用于受激布里渊的SBS发生器将泵浦光散射以产生来自光源的斯托克斯光; 衰减器，用于控制来自光源的泵浦光的振幅，以产生振幅控制的泵浦光; 以及用于外差打击斯托克斯光和振幅控制的泵浦光的检测器，以产生光学载体。

公开(公告)号：US06424664B1

公开(公告)日：2002-07-23

申请号：US09497344

申请日：2000-02-03

Applicant: Wang-Yuhl Oh ,  Joon-Hak Bang ,  Sang-Soo Lee ,  Hyun-Jae Lee ,  Je-Soo Ko ,  Wan-Seok Seo

Inventor： Wang-Yuhl Oh ,  Joon-Hak Bang ,  Sang-Soo Lee ,  Hyun-Jae Lee ,  Je-Soo Ko ,  Wan-Seok Seo

IPC: H01S330

CPC classification number: H01S3/302 ,  H01S3/067 ,  H01S3/06791 ,  H01S3/08086 ,  H01S3/1608

Abstract: Disclosed is a Brillouin erbium-fiber laser system producing multiwavelengths with a dual spacing of 10 GHz and 20 GHz. The Brillouin erbium-fiber laser system includes: a Sagnac reflector generating even- and odd-order Strokes waves by launching input lights, a first unit forming a first resonator with the Sagnac reflector, wherein the first unit is coupled to a first directional coupler in the Sagnac reflector, a second unit forming a second resonator with the Sagnac reflector, wherein the second unit is coupled to the first directional coupler in the Sagnac reflector, and a third unit for inputting Brillouin pump light into one of first and the second units, whereby the optical fiber laser system outputs multiwavelengths with a dual spacing.

Abstract translation: 公开了一种布里渊铒光纤激光系统，其产生具有10GHz和20GHz的双间隔的多波长。 布里渊铒光纤激光系统包括：Sagnac反射器，通过发射输入光产生偶数和奇数阶冲击波，第一单元与Sagnac反射器形成第一谐振器，其中第一单元耦合到第一定向耦合器 Sagnac反射器，形成具有Sagnac反射器的第二谐振器的第二单元，其中第二单元耦合到Sagnac反射器中的第一定向耦合器，以及第三单元，用于将布里渊泵浦光输入第一和第二单元之一， 由此光纤激光系统以双重间隔输出多波长。

公开(公告)号：US20120169909A1

公开(公告)日：2012-07-05

申请号：US12981970

申请日：2010-12-30

Applicant: Jeff RYSINSKI ,  Yibing Michelle Wang ,  Sang-Soo Lee

Inventor： Jeff RYSINSKI ,  Yibing Michelle Wang ,  Sang-Soo Lee

IPC: H04N5/335

CPC classification number: H04N5/374 ,  H03M1/1033 ,  H03M1/123 ,  H03M1/56 ,  H04N5/378 ,  H04N17/002

Abstract: An image processing system includes a pixel array including a plurality of regular pixel columns and at least one test pixel column, a plurality of column analog-to-digital converters (ADCs) configured to correspond to the regular pixel columns and convert analog input signals into digital signals, and a switching block configured to provide output signals of the regular pixel columns to input ends of the corresponding column ADCs in a normal mode, and provide in common an output signal of the test pixel column to the input ends of the column ADCs in a test mode, wherein the test pixel column generates signals having a minute voltage different from one row to another row.

Abstract translation: 图像处理系统包括：像素阵列，包括多个规则像素列和至少一个测试像素列;多个列模数转换器（ADC），被配置为对应于规则像素列并将模拟输入信号转换成 数字信号和切换块，被配置为提供常规像素列的输出信号以在正常模式下输入相应的列ADC的端部，并且共同提供测试像素列的输出信号到列ADC的输入端 在测试模式中，其中测试像素列产生具有不同于一行至另一行的微小电压的信号。

公开(公告)号：US20120155876A1

公开(公告)日：2012-06-21

申请号：US13333119

申请日：2011-12-21

Applicant: Seung-Hyun Cho ,  Han-Hyub Lee ,  Jie-Hyun Lee ,  Jong-Hoon Lee ,  Eun-Gu Lee ,  Eui-Suk Jung ,  Sang-Soo Lee

Inventor： Seung-Hyun Cho ,  Han-Hyub Lee ,  Jie-Hyun Lee ,  Jong-Hoon Lee ,  Eun-Gu Lee ,  Eui-Suk Jung ,  Sang-Soo Lee

IPC: H04J14/02 ,  H04J14/06

CPC classification number: H04J14/0282 ,  H04B10/506

Abstract: A seed light module for a WDM-PON system is provided. The seed light module includes a reflector configured to reflect a part of seed light that is generated from a light source generator, and an optical attenuator configured to attenuate the intensity of the reflected seed light and provide the attenuated seed light, which corresponds to a signal generated by attenuating the intensity of the reflected seed light, to the light source generator.

Abstract translation: 提供了一种用于WDM-PON系统的种子光模块。 种子光模块包括被配置为反射从光源发生器产生的种子光的一部分的反射器，以及光衰减器，被配置为衰减反射种子光的强度并提供对应于信号的衰减种子光 通过将反射的种子光的强度衰减而产生到光源发生器。