公开(公告)号：US20120133855A1

公开(公告)日：2012-05-31

申请号：US13090186

申请日：2011-04-19

Applicant: Sang-Woo WHANGBO ,  Yong-Su LEE ,  Doo-Hee JUNG ,  Cheol-Gon LEE

Inventor： Sang-Woo WHANGBO ,  Yong-Su LEE ,  Doo-Hee JUNG ,  Cheol-Gon LEE

IPC: G02F1/136

CPC classification number: G02F1/1343 ,  G02F1/13439 ,  G02F1/136227 ,  G02F2001/134345 ,  G02F2201/40

Abstract: A liquid crystal display (LCD) is provided that includes: a first substrate; a gate line formed on the first substrate; a data line intersecting the gate line to define a pixel; a thin-film transistor (TFT) connected to the gate line and the data line and formed in the pixel; a sustain electrode line including a first sustain electrode that passes through the pixel, so as to divide the pixel into a first region and a transparent second region, and a second sustain electrodes that extend perpendicularly from the first sustain electrode; and a first pixel electrode connected to the TFT, disposed in the first region.

Abstract translation: 提供一种液晶显示器（LCD），包括：第一基板; 形成在第一基板上的栅极线; 与栅极线相交以限定像素的数据线; 连接到栅极线和数据线并形成在像素中的薄膜晶体管（TFT）; 维持电极线，其包括穿过所述像素的第一维持电极，以将像素划分为第一区域和透明第二区域;以及第二维持电极，其从所述第一维持电极垂直延伸; 以及连接到TFT的第一像素电极，设置在第一区域中。

公开(公告)号：US20120114055A1

公开(公告)日：2012-05-10

申请号：US13291689

申请日：2011-11-08

Applicant: Yong-Su LEE ,  Young-Il Kim ,  Cheol-Hye Cho ,  Sung-Hee Kim ,  Young-Soo Park ,  Dae-Geun Park ,  Sun-Sim Chun ,  Yeon-Joon Chung ,  Won Ryu

Inventor： Yong-Su LEE ,  Young-Il Kim ,  Cheol-Hye Cho ,  Sung-Hee Kim ,  Young-Soo Park ,  Dae-Geun Park ,  Sun-Sim Chun ,  Yeon-Joon Chung ,  Won Ryu

IPC: H04L5/12

CPC classification number: H04L27/265 ,  H04L27/0008 ,  H04L27/0012 ,  H04L27/22 ,  H04L27/38

Abstract: A technology is provided capable of improving the efficiency of an OFDM system by obtaining the performance in Bit Error Rate (BER) in a wireless communication using OFDM and determining the minimum FFT input bit that produces a SNR difference of 0.1 dB or below with respect to a theoretical BER graph at a desired performance.

Abstract translation: 提供了能够通过使用OFDM获得无线通信中的比特误码率（BER）的性能并且确定相对于以下的方式产生0.1dB或更低的SNR差的最小FFT输入比特来提高OFDM系统的效率的技术 理想的BER图形，以期望的性能。

公开(公告)号：US08170147B2

公开(公告)日：2012-05-01

申请号：US11721139

申请日：2005-09-06

Applicant: Yong-Su Lee ,  Youn-Ok Park ,  Eon-Young Hong

Inventor： Yong-Su Lee ,  Youn-Ok Park ,  Eon-Young Hong

IPC: H04L25/06

CPC classification number: H04B1/7176 ,  H04B1/7183 ,  H04L25/06 ,  H04L27/2655

Abstract: An apparatus and method for canceling a DC offset efficiently removes the DC offset by calculating the DC offset after acquiring synchronization in a terminal receiver used for an orthogonal frequency division multiplexing system. The apparatus for canceling the DC offset includes an adding/averaging unit (130), an accumulator (140), a synchronization determiner (150), and a pulse density modulation signal generator (160). The adding and averaging the added input data signals over one frame. The accumulator (140) outputs a DC offset control value by successively accumulating the DX offsets calculated from the adding and averaging unit. The synchronization determiner (150) determines whether to output the DC offset control value provided by the accumulator (140) based on synchronization information. The pulse density modulation signal generator (160) generates a digital pulse density modulation signal based on a representative value provided by the synchronization determiner (150).

Abstract translation: 用于消除DC偏移的装置和方法通过在用于正交频分复用系统的终端接收机中获取同步之后计算DC偏移来有效地去除DC偏移。 用于消除DC偏移的装置包括加法/平均单元（130），累加器（140），同步确定器（150）和脉冲密度调制信号发生器（160）。 在一帧内添加和平均添加的输入数据信号。 累加器（140）通过连续积累从加法和平均单元计算的DX偏移量来输出DC偏移控制值。 同步确定器（150）基于同步信息确定是否输出由累加器（140）提供的DC偏移控制值。 脉冲密度调制信号发生器（160）根据由同步确定器（150）提供的代表值产生数字脉冲密度调制信号。

公开(公告)号：US07940858B2

公开(公告)日：2011-05-10

申请号：US11635475

申请日：2006-12-07

Applicant: Yong-Su Lee ,  Youn-Ok Park ,  Young-Jo Bang ,  Kyung-Yeol Sohn ,  Jae-Gun Jung

Inventor： Yong-Su Lee ,  Youn-Ok Park ,  Young-Jo Bang ,  Kyung-Yeol Sohn ,  Jae-Gun Jung

IPC: H04L27/00 ,  H04B7/06

CPC classification number: H01Q1/246 ,  H01Q3/267 ,  H04B17/14 ,  H04L27/2626

Abstract: In a calibration apparatus in a communication system, a modulation unit calculates a reference signal by modulating a downlink signal, and a digital Intermediate Frequency (IF) unit converts the reference signal to an intermediate frequency signal. An up-converter converts the intermediate frequency signal to a Radio Frequency (RF) signal, and a down-converter generates a received signal for each of the paths from the RF signal to be transmitted through each path. A calibrator calculates a correction value for each path and a delay value by using the reference signal and the received signal for each path.

Abstract translation: 在通信系统中的校准装置中，调制单元通过调制下行链路信号来计算参考信号，并且数字中频（IF）单元将参考信号转换为中频信号。 上变频器将中频信号转换成射频（RF）信号，下变频器从RF信号中产生每个路径的接收信号，以通过每个路径传输。 校准器通过使用参考信号和每个路径的接收信号来计算每个路径的校正值和延迟值。

公开(公告)号：US07746966B2

公开(公告)日：2010-06-29

申请号：US11791442

申请日：2005-06-24

Applicant: Yong-Su Lee ,  Youn-Ok Park ,  Jun-Woo Kim ,  Young-Jo Bang

Inventor： Yong-Su Lee ,  Youn-Ok Park ,  Jun-Woo Kim ,  Young-Jo Bang

IPC: H04L27/08

CPC classification number: H03G3/3078 ,  H04L27/2647 ,  H04L27/2662

Abstract: The present invention relates to a method for automatic gain control (AGC) before an initial synchronization of a mobile station modem in OFDM system, and an apparatus thereof. The AGC apparatus includes: an initial synchronization inspector that verifies whether an initial synchronization for an input block sample (k) signal has been performed; a frame divider that divides a frame into predetermined intervals B(k) for the input block sample(k) signal in the case that the initial synchronization has not been performed; a reference value inspector that compares a difference value Pref−Pcalc, between a predetermined reference value Pref and sample data average energy Pcalc, with a predetermined value; a count controller that increases or decreases the count when the difference value Pref−Pcalc compared by the reference value inspector is greater or less than the predetermined value; a count inspector that inspects whether the count is greater or less than 0 when the input block sample (k) reaches a maximum value MAX; and a gain controller which increases or decreases the gain, level by level, according to the count inspection result of the count inspector.

Abstract translation: 本发明涉及OFDM系统中的移动台调制解调器的初始同步之前的自动增益控制（AGC）的方法及其装置。 AGC装置包括：初始同步检查器，其验证是否已经执行了输入块样本（k）信号的初始同步; 在没有执行初始同步的情况下，对于输入块样本（k）信号将帧划分成预定间隔B（k）的帧分割器; 参考值检查器，将预定参考值Pref和采样数据平均能量Pcalc之间的差值Pref-Pcalc与预定值进行比较; 当由参考值检查器比较的差值Pref-Pcalc大于或小于预定值时增加或减少计数的计数控制器; 当输入块样本（k）达到最大值MAX时，检查计数是否大于或小于0的计数检查器; 以及根据计数检查员的计数检查结果逐级增加或减少增益的增益控制器。

公开(公告)号：US20100158173A1

公开(公告)日：2010-06-24

申请号：US12616980

申请日：2009-11-12

Applicant: Yong Su LEE ,  Young-Il Kim ,  Wenbo Wang ,  Zheng Kan

Inventor： Yong Su LEE ,  Young-Il Kim ,  Wenbo Wang ,  Zheng Kan

IPC: H04B15/00 ,  H04B17/00 ,  H04B1/10

CPC classification number: H04L25/0212 ,  H04L25/022 ,  H04L25/0226

Abstract: Provided is a method and system for estimating a channel in a wireless communication system. An interference coefficient is calculated based on a known structure of a pilot, and a channel value in a frequency domain is estimated. A channel value in a time domain is obtained by transforming the channel value in the frequency domain and the channel delay values are subtracted from the channel value in the time domain, thereby cancelling interference.

Abstract translation: 提供了一种用于估计无线通信系统中的信道的方法和系统。 基于导频的已知结构计算干扰系数，估计频域中的信道值。 通过对频域中的信道值进行变换来获得时域中的信道值，并且从时域中的信道值中减去信道延迟值，从而消除干扰。

公开(公告)号：US20100153479A1

公开(公告)日：2010-06-17

申请号：US12549309

申请日：2009-08-27

Applicant: Yong Su LEE ,  Young-il KIM ,  Seungkwon CHO

Inventor： Yong Su LEE ,  Young-il KIM ,  Seungkwon CHO

IPC: G06F17/14

CPC classification number: G06F17/142 ,  H04L27/2665 ,  H04L27/2678

Abstract: Disclosed are a fast Fourier transform (FFT) start point setting apparatus, and a method thereof. An FFT start point according to a synchronization acquisition result is moved to a CP direction by a predetermined sample offset and perform FFT.

Abstract translation: 公开了一种快速傅里叶变换（FFT）起点设定装置及其方法。 根据同步捕获结果的FFT起始点通过预定的采样偏移移动到CP方向，并执行FFT。

公开(公告)号：US20100128819A1

公开(公告)日：2010-05-27

申请号：US11721139

申请日：2005-09-06

Applicant: Yong-Su Lee ,  Youn-OK Park ,  Eon-Young Hong

Inventor： Yong-Su Lee ,  Youn-OK Park ,  Eon-Young Hong

IPC: H04L25/06

CPC classification number: H04B1/7176 ,  H04B1/7183 ,  H04L25/06 ,  H04L27/2655

Abstract: An apparatus and method for canceling a DC offset efficiently removes the DC offset by calculating the DC offset after acquiring synchronization in a terminal receiver used for an orthogonal frequency division multiplexing system. The apparatus for canceling the DC offset includes an adding/averaging unit (130), an accumulator (140), a synchronization determiner (150), and a pulse density modulation signal generator (160). The adding and averaging the added input data signals over one frame. The accumulator (140) outputs a DC offset control value by successively accumulating the DX offsets calculated from the adding and averaging unit. The synchronization determiner (150) determines whether to output the DC offset control value provided by the accumulator (140) based on synchronization information. The pulse density modulation signal generator (160) generates a digital pulse density modulation signal based on a representative value provided by the synchronization determiner (150).

Abstract translation: 用于消除DC偏移的装置和方法通过在用于正交频分复用系统的终端接收机中获取同步之后计算DC偏移来有效地去除DC偏移。 用于消除DC偏移的装置包括加法/平均单元（130），累加器（140），同步确定器（150）和脉冲密度调制信号发生器（160）。 在一帧内添加和平均添加的输入数据信号。 累加器（140）通过连续积累从加法和平均单元计算的DX偏移量来输出DC偏移控制值。 同步确定器（150）基于同步信息确定是否输出由累加器（140）提供的DC偏移控制值。 脉冲密度调制信号发生器（160）根据由同步确定器（150）提供的代表值产生数字脉冲密度调制信号。

公开(公告)号：US20100069110A1

公开(公告)日：2010-03-18

申请号：US12513273

申请日：2007-10-31

Applicant: Yong-Su Lee ,  Jung-Hoon Oh ,  Young-Il Kim

Inventor： Yong-Su Lee ,  Jung-Hoon Oh ,  Young-Il Kim

IPC: H04B7/005 ,  H04B17/00

CPC classification number: H04W52/146 ,  H04B7/15528 ,  H04W52/241 ,  H04W52/362 ,  H04W52/46 ,  H04W52/50

Abstract: Provided are a method of controlling power of an access uplink using a relay station (RS) and a system thereof. When a base station (BS) decides that the subject of power control of the access uplink is itself, the BS generates a message for power control of the access uplink based on channel quality measurement information reported from the RS and transmits the power control message to a subscriber station (SS), and when the BS decides that the subject of power control of the access uplink is the RS, the RS generates a message for power control of the access uplink based on channel quality measurement information and transmits the power control message to the SS. Thus, fast power control of the access uplink can be performed.

Abstract translation: 提供一种使用中继站（RS）及其系统来控制接入上行链路的功率的方法。 当基站（BS）确定接入上行链路的功率控制的对象本身时，BS基于从RS报告的信道质量测量信息生成用于接入上行链路的功率控制的消息，并将功率控制消息发送到 用户站（SS），并且当BS决定接入上行链路的功率控制对象为RS时，RS基于信道质量测量信息生成用于接入上行链路的功率控制的消息，并且发送功率控制消息 到SS。 因此，可以执行接入上行链路的快速功率控制。

公开(公告)号：US20090285112A1

公开(公告)日：2009-11-19

申请号：US12437179

申请日：2009-05-07

Applicant: Yong-su Lee ,  Hyukjoon Lee ,  Hyun Park ,  Young-Il Kim ,  Young-Hoon Choi

Inventor： Yong-su Lee ,  Hyukjoon Lee ,  Hyun Park ,  Young-Il Kim ,  Young-Hoon Choi

IPC: H04L12/26

CPC classification number: H04B7/2606

Abstract: A method of managing a relay path in a mobile multi-hop relay (MMR) environment is provided. A relay station (RS) discovers a link quality of neighboring RSs, which is necessary for managing a path, and reports the link quality to a base station (BS). The BS selects an optimal path having a tree-structure based on the reported link quality and informs the RS. Thus, wireless resources can be efficiently used.

Abstract translation: 提供了一种在移动多跳中继（MMR）环境中管理中继路径的方法。 中继站（RS）发现管理路径所必需的相邻RS的链路质量，并向基站（BS）报告链路质量。 基于报告的链路质量，BS选择具有树结构的最优路径并通知RS。 因此，可以有效地使用无线资源。