公开(公告)号：USD553077S1

公开(公告)日：2007-10-16

申请号：US29268463

申请日：2006-11-07

Applicant: Dong Kyu Kim ,  Beom Ku Han ,  Chang Soo Lee

Designer： Dong Kyu Kim ,  Beom Ku Han ,  Chang Soo Lee

公开(公告)号：USD539787S1

公开(公告)日：2007-04-03

申请号：US29251485

申请日：2006-01-09

Applicant: Dong Kyu Kim ,  Yang Jic Lee ,  Beom Ku Han ,  Chang Hwan Hwang

Designer： Dong Kyu Kim ,  Yang Jic Lee ,  Beom Ku Han ,  Chang Hwan Hwang

公开(公告)号：US20070041459A1

公开(公告)日：2007-02-22

申请号：US11501964

申请日：2006-08-10

Applicant: Hae-Dong Yeon ,  Jae-Yong Lee ,  Yun-Sang Park ,  Bong-Gee Song ,  Dong-Kyu Kim ,  Dong-Joon Shin

Inventor： Hae-Dong Yeon ,  Jae-Yong Lee ,  Yun-Sang Park ,  Bong-Gee Song ,  Dong-Kyu Kim ,  Dong-Joon Shin

IPC: H04K1/10

CPC classification number: H04L27/2624

Abstract: A Peak-to-Average Power Ratio (PAPR) reduction apparatus and method in an OFDM communication system are provided. In the PAPR reduction method, magnitude and phase components are extracted from transmission sample data. Peaks having magnitude components exceeding a threshold are detected by comparing the extracted magnitude components with the threshold. The highest of the peaks is detected and compared with the threshold. If the highest peak is greater than the threshold, the highest peak is updated.

Abstract translation: 提供了一种OFDM通信系统中的峰值平均功率比（PAPR）降低装置和方法。 在PAPR缩小方法中，从传输样本数据中提取幅度和相位分量。 通过将所提取的幅度分量与阈值进行比较来检测具有超过阈值的幅度分量的峰值。 检测最高峰，并将其与阈值进行比较。 如果最高峰值大于阈值，则更新最高峰。

公开(公告)号：US20060182015A1

公开(公告)日：2006-08-17

申请号：US11339455

申请日：2006-01-25

Applicant: Dong-Kyu Kim

Inventor： Dong-Kyu Kim

IPC: H04J11/00

CPC classification number: H04L27/2657 ,  H04L25/022 ,  H04L27/2679 ,  H04L2025/03414

Abstract: An Orthogonal Frequency Division Multiplexing (OFDM) signal receiving apparatus and method of estimating a common phase error (CPE) using data subcarriers (and pilot subcarriers) instead of only pilot subcarriers. In the OFDM signal receiver, a channel measurement unit estimates a channel from a fast-Fourier-transformed signal to generate information about good subcarrier indexes as channel state information (CSI). A Common Phase Error (CPE) estimation unit estimates good pilot subcarriers and good data subcarriers from an equalized signal output from an equalizer (EQ) based on the channel state information (CSI), calculates the first and second common phase errors from the estimated pilot and data subcarriers respectively, and combines the first and second common phase errors to generate a final common phase error.

公开(公告)号：US20060146947A1

公开(公告)日：2006-07-06

申请号：US11300099

申请日：2005-12-14

Applicant: Dong-Kyu Kim

Inventor： Dong-Kyu Kim

IPC: H04K1/10

CPC classification number: H04L27/2662 ,  H04L27/2678

Abstract: A circuit for detecting a guard interval in an orthogonal frequency division multiplication (OFDM) communication system, using two successive autocorrelation calculations for a received sample train. The circuit determines a guard interval by calculating the maximum correlation value first autocorrelation calculation step (delaying an OFDM signal by the length of valid data N, the useful data duration); and a second autocorrelation calculation step (delaying the OFDM signal by a guard interval detection period (N+G1), the sum of the valid data length (N) and the minimum guard interval (GI)). Performing two autocorrelation calculation steps provides improved detection of the guard interval, being free from noises and distortions and producing the maximum correlation value and position more distinctly.

Abstract translation: 一种用于在正交频分乘法（OFDM）通信系统中检测保护间隔的电路，对接收到的采样列使用两个连续的自相关计算。 电路通过计算最大相关值第一自相关计算步骤（延迟OFDM信号有效数据N的长度，有用数据持续时间）来确定保护间隔; 和第二自相关计算步骤（通过保护间隔检测周期（N + G 1）延迟OFDM信号，有效数据长度（N）和最小保护间隔（GI）的总和）。 执行两个自相关计算步骤提供了保护间隔的改进的检测，没有噪声和失真，并且更明显地产生最大相关值和位置。

公开(公告)号：US07012881B2

公开(公告)日：2006-03-14

申请号：US09750128

申请日：2000-12-29

Applicant: Dong Kyu Kim

Inventor： Dong Kyu Kim

IPC: H04J11/00

CPC classification number: H04L27/2657 ,  H04L27/261 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2686

Abstract: A timing and frequency offset estimation method for OFDM use an analytic tone in calculating timing offset estimation and a frequency offset estimation. An analytic tone includes a signal that contains only one subcarrier and has characteristics of a uniform magnitude and a uniform phase rotation. The estimation algorithm with an analytic tone is based correlation function. By changing the interval between two samples in correlation, the maximum estimation range for the frequency offset can be extended to ±N/2 subcarrier spacing, where N is the number of total subcarriers. Thus, the frequency synchronization scheme for OFDM systems has a wider range and a more simple complexity than traditional ones requiring separate fine and coarse synchronization.

公开(公告)号：US20060002359A1

公开(公告)日：2006-01-05

申请号：US11147900

申请日：2005-06-08

Applicant: Dong-Kyu Kim ,  Yong-Je Lim

Inventor： Dong-Kyu Kim ,  Yong-Je Lim

IPC: H04J1/00

CPC classification number: H04L27/2657 ,  H04L5/023 ,  H04L27/2646

Abstract: Provided are an orthogonal frequency division multiple assess (OFDMA) system and a method for controlling frequency offsets of subscribers in uplink communication. The OFDMA system solves a problem that the system performance is deteriorated in uplink communications because subscriber stations have different carrier frequency offsets. Each subscriber station compensates for a frequency offset thereof in response to a frequency offset control signal provided by a base station and then transmits an uplink frame to the base station. The base station compensates for an average frequency offset using the uplink frame, which has a small frequency offset shift because each subscriber station compensates for the frequency offset thereof previously, and thus the frequency offset of each subscriber station can be correctly compensated to prevent inter-carrier interference.

Abstract translation: 提供了一种正交频分多重评估（OFDMA）系统和用于控制上行链路通信中用户频偏的方法。 OFDMA系统解决了上行链路通信中的系统性能恶化的问题，因为用户站具有不同的载波频率偏移。 每个用户站响应于由基站提供的频率偏移控制信号来补偿其偏移量，然后向基站发送上行链路帧。 基站由于每个用户站先前补偿了其偏移量而使用具有小的频偏偏移的上行链路帧来补偿平均频率偏移，因此可以正确地补偿每个用户站的频率偏移， 载波干扰。

公开(公告)号：US5729309A

公开(公告)日：1998-03-17

申请号：US760253

申请日：1996-12-05

Applicant: Byoung-Sun Na ,  Dong-Kyu Kim

Inventor： Byoung-Sun Na ,  Dong-Kyu Kim

IPC: G02F1/1333 ,  G02F1/13 ,  G02F1/1362 ,  G02F1/1343

CPC classification number: G02F1/1309 ,  G02F2001/136263

Abstract: A liquid crystal display according to this invention has at least two repair lines. A first repair line crosses twice the data lines lying on the center portion of the substrate and once the some data lines which a second repair line crosses twice among the remainings. The data lines not lying on the center portion is shorter than the remaining data lines so that they do not cross the first repair line.

Abstract translation: 根据本发明的液晶显示器具有至少两条维修线。 第一修复线穿过位于基板中心部分的数据线的两倍，并且一次第二修复线在剩余部分之间跨过两次的一些数据线。 不位于中心部分的数据线比剩余的数据线短，使得它们不穿过第一修复线。

公开(公告)号：US5625476A

公开(公告)日：1997-04-29

申请号：US580703

申请日：1995-12-29

Applicant: Dong-kyu Kim

Inventor： Dong-kyu Kim

IPC: G02F1/1339 ,  G02F1/1345 ,  G02F1/136 ,  G02F1/1368

CPC classification number: G02F1/1345 ,  G02F1/1368

Abstract: A method for forming a common transfer contact of a liquid crystal display between a common electrode substrate and a thin film transistor substrate includes the steps of printing a seal pattern of a proper sealant on the common electrode substrate, assembling the common electrode substrate and the thin film transistor substrate by means of the seal pattern, cutting the common electrode substrate along a properly defined cutting line, and dotting the gap between the common electrode substrate and the thin film transistor substrate with an electrically conductive liquid-phase substance of a high viscosity to penetrate the gap by capillary action to thereby establish a common transfer contact between the common electrode substrate and the thin film transistor when being hardened.

Abstract translation: 在公共电极基板和薄膜晶体管基板之间形成液晶显示器的公共转印接触的方法包括以下步骤：在公共电极基板上印刷适当的密封剂的密封图案，组装公共电极基板和薄的 通过密封图案切割薄膜晶体管基板，沿着适当限定的切割线切割公共电极基板，并用高粘度的导电液相物质将公共电极基板和薄膜晶体管基板之间的间隙点划线 通过毛细作用渗透间隙，从而在硬化时在公共电极基板和薄膜晶体管之间建立共同的转移接触。

公开(公告)号：US20230144035A1

公开(公告)日：2023-05-11

申请号：US18150138

申请日：2023-01-04

Applicant: Dong Kyu KIM ,  Sung CHOI ,  WON-IL KIM ,  VISION VR INC.

Inventor： Dong Kyu KIM ,  WON-IL KIM

IPC: G06T13/80 ,  G06F3/0482 ,  G06T13/40

CPC classification number: G06T13/80 ,  G06F3/0482 ,  G06T13/40 ,  G06T2200/24

Abstract: Provided are a method and device for providing interactive virtual reality content capable of increasing user immersion by naturally connecting an idle image to a branched image. The method includes providing an idle image including options, wherein an actor in the idle image performs a standby operation, while the actor performs the standby operation, receiving a user selection for an option, providing a connection image, and providing a corresponding branched image according to the selection of the user, wherein a portion of the actor in the connection image is processed by computer graphics, and the actor performs a connection operation so that a first posture of the actor at a time point at which the selection is received is smoothly connected to a second posture of the actor at a start time point of the branched image.