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    Multi-carrier transmission systems and methods using subcarrier relocation and guard interval insertion
    62.
    发明授权
    Multi-carrier transmission systems and methods using subcarrier relocation and guard interval insertion 有权
    多载波传输系统和使用子载波重定位和保护间隔插入的方法

    公开(公告)号：US07480336B2

    公开(公告)日：2009-01-20

    申请号：US10703646

    申请日：2003-11-07

    Applicant: Jun-Hyun Park ,  Dong-Kyu Kim

    Inventor： Jun-Hyun Park ,  Dong-Kyu Kim

    IPC: H04L27/28 ,  H04K1/10

    CPC classification number: H04L27/2607

    Abstract: There is provided a multi-carrier transmission system which includes: an encoder for converting a data sequence into encoded symbols corresponding to respective sub-carriers; a first shifter for rearranging the encoded symbols to define a guard interval length; an inverse fast Fourier transform (IFFT) unit for inverse fast Fourier transforming the rearranged encoded symbols; a second shifter for processing the transformed symbols to effect a frequency shift to compensate for a frequency shift effected by the IFFT unit; and a guard interval inserter for interleaving symbol replicas with the processed symbols according to the guard interval length. The data transmission system of the present invention performs sub-carrier relocation function and guard interval insertion function using relatively simple elements in order to reduce the data processing time. As a result, the transmission efficiency of the entire communication system is enhanced.

    Abstract translation: 提供了一种多载波传输系统，其包括：编码器，用于将数据序列转换成对应于各个子载波的编码符号; 第一移位器，用于重排编码符号以定义保护间隔长度; 用于快速傅立叶逆变换重排编码符号的快速傅立叶逆变换（IFFT）单元; 第二移位器，用于处理变换的符号以实现频移以补偿由IFFT单元实现的频移; 以及保护间隔插入器，用于根据保护间隔长度与已处理符号交织符号副本。 本发明的数据传输系统使用相对简单的元素执行副载波重定位功能和保护间隔插入功能，以减少数据处理时间。 结果，提高了整个通信系统的传输效率。

    POWER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME
    63.
    发明申请
    POWER SUPPLY DEVICE AND IMAGE FORMING APPARATUS HAVING THE SAME 有权
    电源装置和具有该电源装置的图像形成装置

    公开(公告)号：US20080304851A1

    公开(公告)日：2008-12-11

    申请号：US12014256

    申请日：2008-01-15

    Applicant: Dong-kyu KIM ,  Min-seon Kim

    Inventor： Dong-kyu KIM ,  Min-seon Kim

    IPC: G03G15/00

    CPC classification number: G03G15/80 ,  G03G2215/01 ,  Y10T307/297

    Abstract: A power supply includes a transformer to transform an input voltage into an output driving voltage for one of a plurality of components of an image forming apparatus, and an output converter to detect the driving voltage being output from the transformer, to amplify the detected driving voltage according to a power control signal, and to output the amplified driving voltage to at least one remaining component in the plurality of components of the image forming apparatus. The power supply can not only control high voltage outputs individually, but also reduces the number of switching transformers being used, as it uses at least one shared switching transformer.

    Abstract translation: 电源包括变压器，用于将输入电压变换为图像形成装置的多个部件中的一个的输出驱动电压;以及输出转换器，用于检测从变压器输出的驱动电压，以放大检测到的驱动电压 并且将放大的驱动电压输出到图像形成装置的多个分量中的至少一个剩余分量。 电源不仅可以单独控制高压输出，还可以减少正在使用的开关变压器的数量，因为它使用至少一个共享开关变压器。

    Low friction type anti-fouling paint
    65.
    发明申请
    Low friction type anti-fouling paint 有权
    低摩擦型防污漆

    公开(公告)号：US20080021132A1

    公开(公告)日：2008-01-24

    申请号：US11640746

    申请日：2006-12-18

    Applicant: Dong Kyu Kim

    Inventor： Dong Kyu Kim

    IPC: C09D5/16

    CPC classification number: C09D5/1662

    Abstract: Provided is a low friction type anti-fouling paint. The anti-fouling paint includes prepolymer fluid formed of 10% to 30% NCO mythylene diisocyanate of 100 wt %; and resin fluid formed of polyoxylpropylenediamine of about 42 wt % to 48 wt % for adjusting an elongation and a tensile strength of a paint film, polyethertriamine of about 8 wt % to 10 wt % having a molecular weight of 5,000 for adjusting a curing time, polydiphenyltriamine of about 15 wt % to 20 wt % for adjusting a curing physical property and increasing the elongation, a modified silicone fluid of about 8 wt % to 12 wt % for increasing a slip and an anti fouling property, a filler of about 5 wt % to 9 wt % for increasing an abrasion resistance, an adhesion promoter of about 1 wt % to 2 wt %, and a pigment of about 1 wt % to 2 wt %.

    Abstract translation: 提供了低摩擦型防污涂料。 防污涂料包括由10％至30％的100重量％的NCO亚甲基二异氰酸酯形成的预聚物流体; 由聚氧乙烯基二胺形成的树脂流体为约42重量％至48重量％，用于调节涂膜的伸长率和拉伸强度，聚合三聚胺约为8重量％至10重量％，分子量为5000，用于调节固化时间， 用于调节固化物理性能和增加伸长率的约15重量％至20重量％的聚二苯基三胺，用于增加滑动和防止结垢性能的约8重量％至12重量％的改性硅氧烷流体，约5重量％ ％至9重量％，增加耐磨性，约1重量％至2重量％的粘合促进剂和约1重量％至2重量％的颜料。

    Liquid crystal display
    68.
    发明申请
    Liquid crystal display 有权
    液晶显示器

    公开(公告)号：US20070018927A1

    公开(公告)日：2007-01-25

    申请号：US11444185

    申请日：2006-05-31

    Applicant: Dong-kyu Kim

    Inventor： Dong-kyu Kim

    IPC: G09G3/36

    CPC classification number: G09G3/3659 ,  G02F1/13624 ,  G02F1/1393 ,  G02F2001/134345 ,  G09G3/3696 ,  G09G2300/0443 ,  G09G2320/028

    Abstract: A liquid crystal display (LCD) which can provide uniform vertical and horizontal visibility while improving lateral visibility is provided. The LCD includes a first insulating substrate, first and second gate lines which are formed on the first insulating substrate, and a data line which is insulated from the first and second gate lines and intersects the first and second gate lines. The LCD also includes first and second thin film transistors (TFTs) which are formed in each pixel and are connected to the first and second gate lines, respectively, and to the data line, first sub-pixel electrodes which are connected to the first TFT, and a second sub-pixel electrode which is separated from the first sub-pixel electrodes by predetermined gaps and is connected to the second TFT. The LCD includes a second insulating substrate which faces the first insulating substrate, a common electrode which is formed on the second insulating substrate and comprises a plurality of domain dividers, and a liquid crystal layer which is interposed between the first and second insulating substrates, wherein a display region of the second sub-pixel electrode is divided into 4 domain groups by the domain dividers, and the 4 domain groups have substantially the same area.

    Abstract translation: 提供了一种能够提供均匀的垂直和水平可视性同时提高侧向可视性的液晶显示器（LCD）。 LCD包括第一绝缘基板，形成在第一绝缘基板上的第一和第二栅极线以及与第一和第二栅极线绝缘并与第一和第二栅极线相交的数据线。 LCD还包括分别形成在每个像素中并分别连接到第一和第二栅极线的第一和第二薄膜晶体管（TFT），并且与数据线相连，第一和第二薄膜晶体管连接到第一TFT 以及第二子像素电极，其通过预定间隙与第一子像素电极分离并连接到第二TFT。 LCD包括面向第一绝缘基板的第二绝缘基板，形成在第二绝缘基板上并包括多个畴分隔件的公共电极以及介于第一和第二绝缘基板之间的液晶层，其中 第二子像素电极的显示区域由分割器划分为4个域组，并且4个域组具有大致相同的面积。

    Multi-transceiver system and methods of compensating offset frequency
    69.
    发明申请
    Multi-transceiver system and methods of compensating offset frequency 有权
    多收发机系统和偏移频率补偿方法

    公开(公告)号：US20060135077A1

    公开(公告)日：2006-06-22

    申请号：US11246397

    申请日：2005-10-11

    Applicant: Dong-Kyu Kim

    Inventor： Dong-Kyu Kim

    IPC: H04B17/00

    CPC classification number: H04B17/21

    Abstract: Disclosed is a multi-transceiver system adapted to estimate a frequency offset on basis of a test signal and a reference signal. Transceivers in the multi-transceiver system are adapted to transmit signals compensated with the frequency offsets.

    Abstract translation: 公开了一种适于基于测试信号和参考信号估计频率偏移的多收发器系统。 多收发器系统中的收发器适用于传输用频率补偿补偿的信号。

    Orthogonal frequency division multiplexing receiver where FFT Window position recovery interlocks with sampling clock adjustment and method thereof
    70.
    发明授权
    Orthogonal frequency division multiplexing receiver where FFT Window position recovery interlocks with sampling clock adjustment and method thereof 有权
    FFT窗口位置恢复与采样时钟调整互锁的正交频分复用接收器及其方法

    公开(公告)号：US06853616B1

    公开(公告)日：2005-02-08

    申请号：US09555046

    申请日：1998-11-24

    Applicant: Dong-kyu Kim ,  Sang-hyun Do ,  Hyung-jin Choi

    Inventor： Dong-kyu Kim ,  Sang-hyun Do ,  Hyung-jin Choi

    IPC: H04J11/00 ,  H04B3/04 ,  H04L27/26

    CPC classification number: H04L27/2665 ,  H04L27/2662

    Abstract: An OFDM receiver for interlocking FFT window position recovery with sampling clock control, and a method thereof are provided. This method includes the steps of: extracting a pilot signal from fast-Fourier-transformed OFDM received signals, and detecting inter-pilot phase differences; averaging the detected phase differences for a symbol and normalizing the mean phase difference by dividing it into reference values corresponding to phase differences generated when FFT window errors of at least one sample exist; and simultaneously controlling the FFT window position offset using a value obtained by rounding off the normalized value, and the sampling clock offset using the difference between the round-off value and the normalized value.

    Abstract translation: 提供了一种用于使FFT窗口位置恢复与采样时钟控制互锁的OFDM接收器及其方法。 该方法包括以下步骤：从快速傅里叶变换的OFDM接收信号中提取导频信号，并检测导频间的相位差; 对于符号的检测到的相位差进行平均，并将平均相位差归一化，将其分成对应于存在至少一个样本的FFT窗口误差时产生的相位差的参考值; 并且使用通过舍入归一化值而获得的值以及使用舍入值与归一化值之间的差来采样时钟偏移来同时控制FFT窗口位置偏移。

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