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    Automatic gain control apparatus and method in orthogonal frequency division multiplexing
    5.
    发明授权
    Automatic gain control apparatus and method in orthogonal frequency division multiplexing 有权
    自动增益控制装置和方法在正交频分复用中

    公开(公告)号：US07782977B2

    公开(公告)日：2010-08-24

    申请号：US10583164

    申请日：2004-12-17

    申请人： Yong-Su Lee ,  Youn-Ok Park ,  Jun-Woo Kim ,  Dae-Ho Kim

    发明人： Yong-Su Lee ,  Youn-Ok Park ,  Jun-Woo Kim ,  Dae-Ho Kim

    IPC分类号： H04K1/02

    CPC分类号： H03G3/3089 ,  H04L25/061 ,  H04L27/2647

    摘要： Disclosed is an automatic gain control device in an orthogonal frequency division multiplexing system. A variable gain amplifier controls a gain of an input signal; an energy calculator calculates an energy of the input signal; a truncator accumulates the calculated energies, finds an average thereof, and generates a DC offset of the input signal; a subtracter subtracts a predefined reference value from the DC offset, and outputs a signal; and an RC filter feeds the value output by the subtracter back to the variable gain amplifier so that the value output by the subtracter may be used for an automatic gain control. The predefined reference value given to be 4.Ov is a reference power generated based on a saturation to RMS ratio for minimizing the bit error rate of the orthogonal frequency division multiplexing system.

    摘要翻译： 公开了一种正交频分复用系统中的自动增益控制装置。 可变增益放大器控制输入信号的增益; 能量计算器计算输入信号的能量; 截断器累积计算出的能量，找到其平均值，并产生输入信号的DC偏移; 减法器从DC偏移中减去预定义的参考值，并输出信号; 并且RC滤波器将减法器输出的值馈送到可变增益放大器，使得减法器输出的值可用于自动增益控制。 给定为4.0V的预定义参考值是基于用于使正交频分复用系统的误码率最小化的饱和度与RMS比率产生的参考功率。

    Method for Automatic Gain Control Before Initial Synchronization in Ofdm System and Apparatus Thereof
    6.
    发明申请
    Method for Automatic Gain Control Before Initial Synchronization in Ofdm System and Apparatus Thereof 有权
    Ofdm系统初始同步之前的自动增益控制方法及其设备

    公开(公告)号：US20080056394A1

    公开(公告)日：2008-03-06

    申请号：US11791442

    申请日：2005-06-24

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

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

    IPC分类号： H04L27/08 ,  H04L27/28

    CPC分类号： H03G3/3078 ,  H04L27/2647 ,  H04L27/2662

    摘要： 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.

    摘要翻译： 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，其验证输入块的初始同步 样本（k）信号已被执行; 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。

    Thin film transistor and thin film transistor array panel
    7.
    发明授权
    Thin film transistor and thin film transistor array panel 有权
    薄膜晶体管和薄膜晶体管阵列面板

    公开(公告)号：US08653515B2

    公开(公告)日：2014-02-18

    申请号：US13367076

    申请日：2012-02-06

    申请人： Yong-Su Lee ,  Yoon Ho Khang ,  Se Hwan Yu ,  Chong Sup Chang

    发明人： Yong-Su Lee ,  Yoon Ho Khang ,  Se Hwan Yu ,  Chong Sup Chang

    IPC分类号： H01L29/10

    CPC分类号： H01L29/458 ,  H01L29/45 ,  H01L29/78618 ,  H01L29/7869

    摘要： Provided is a thin film transistor and thin film transistor panel array. The thin film transistor includes: a substrate; a gate electrode disposed on the substrate; a semiconductor layer disposed on the substrate and partially overlapping with the gate electrode; a source electrode and a drain electrode spaced apart from each other with respect to a channel region of the semiconductor layer; an insulating layer disposed between the gate electrode and the semiconductor layer; and a barrier layer disposed between the semiconductor layer and the source electrode and between the semiconductor layer and the drain electrode, in which the barrier layer comprises graphene. An ohmic contact is provided based on the type of material used for the semiconductor layer.

    摘要翻译： 提供了一种薄膜晶体管和薄膜晶体管阵列阵列。 薄膜晶体管包括：基板; 设置在所述基板上的栅电极; 设置在所述基板上并与所述栅电极部分重叠的半导体层; 源电极和漏电极相对于半导体层的沟道区彼此分开; 设置在所述栅电极和所述半导体层之间的绝缘层; 以及设置在所述半导体层和所述源电极之间以及所述半导体层和所述漏电极之间的阻挡层，其中所述阻挡层包括石墨烯。 基于用于半导体层的材料的类型提供欧姆接触。

    Method of controlling power of access uplink using relay station and system thereof
    8.
    发明授权
    Method of controlling power of access uplink using relay station and system thereof 有权
    使用中继站控制上行链路功率的方法及其系统

    公开(公告)号：US08200274B2

    公开(公告)日：2012-06-12

    申请号：US12513273

    申请日：2007-10-31

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

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

    IPC分类号： H04B7/00

    CPC分类号： H04W52/146 ,  H04B7/15528 ,  H04W52/241 ,  H04W52/362 ,  H04W52/46 ,  H04W52/50

    摘要： 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.

    摘要翻译： 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。

    Liquid crystal display
    10.
    发明授权
    Liquid crystal display 有权
    液晶显示器

    公开(公告)号：US08553192B2

    公开(公告)日：2013-10-08

    申请号：US13090186

    申请日：2011-04-19

    申请人： Sang-Woo Whangbo ,  Yong-Su Lee ,  Doo-Hee Jung ,  Cheol-Gon Lee

    发明人： Sang-Woo Whangbo ,  Yong-Su Lee ,  Doo-Hee Jung ,  Cheol-Gon Lee

    IPC分类号： G02F1/1343

    CPC分类号： G02F1/1343 ,  G02F1/13439 ,  G02F1/136227 ,  G02F2001/134345 ,  G02F2201/40

    摘要： 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.

    摘要翻译： 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。