公开(公告)号：US07826430B2

公开(公告)日：2010-11-02

申请号：US11983483

申请日：2007-11-09

申请人： Jae-Hoon Lee ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Sang-Ho Kim

发明人： Jae-Hoon Lee ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Sang-Ho Kim

IPC分类号： H04J3/00 ,  H04J3/06

CPC分类号： H04J14/02 ,  H04J3/0682 ,  H04W88/085

摘要： A method and apparatus for transmitting data to an Access Point (AP) and a Mobile Station (MS) in a Time Division Duplex (TDD) optical repeater. A main donor generates a control frame for controlling a remote, upon receipt of data from the AP, and transmits the control frame to the remote during a non-downlink transmission period. The remote analyzes the control frame received from the main donor, detects sync information about a downlink signal and an uplink signal, and remote control information from the analyzed control frame, performs a control operation according to the detected remote control information, and generates a status frame for notifying the main donor of the status of the remote upon receipt of data from the MS. The status frame is transmitted from the remote to the main donor during a non-uplink transmission period.

摘要翻译： 一种用于向时分双工（TDD）光中继器中的接入点（AP）和移动台（MS）发送数据的方法和装置。 在从AP接收到数据时，主要供体生成用于控制远程的控制帧，并且在非下行链路传输周期期间将控制帧发送到远程。 遥控器分析从主供体接收到的控制帧，检测关于下行链路信号和上行链路信号的同步信息，以及来自分析的控制帧的遥控信息，根据检测到的遥控信息执行控制操作，并且生成状态 框架，用于在从MS接收到数据时通知主要供体的远程状态。 在非上行链路传输期间，状态帧从远端发送到主供体。

公开(公告)号：US07773887B2

公开(公告)日：2010-08-10

申请号：US11642260

申请日：2006-12-20

申请人： Jae-Hoon Lee ,  Byung-Jik Kim ,  Seong-Taek Hwang ,  Sang-Ho Kim

发明人： Jae-Hoon Lee ,  Byung-Jik Kim ,  Seong-Taek Hwang ,  Sang-Ho Kim

IPC分类号： H04B10/00 ,  H04B10/24 ,  H04J14/00

CPC分类号： H04B10/25758 ,  H04B7/2606

摘要： A single wavelength bi-directional RoF link apparatus for signal transmission in a TDD wireless system includes a main donor for receiving an RF signal of downstream data from an upper layer, electrooptic converting the received RF signal to an optical signal, and transmitting the converted optical signal via an optical fiber in response to a TDD switching signal received from the upper layer, or receiving an optical signal of upstream data via the optical fiber, opto-electric converting the received optical signal to an RF signal in response to the TDD switching signal received from the upper layer, and transmitting the converted optical signal to the main donor; and a remote for receiving the optical signal of the downstream data via the optical fiber from the main donor, opto-electric converting the received optical signal to an RF signal, and emitting the converted RF signal to a terminal via an antenna in response to a TDD switching signal generated by a switch timing signal generation circuit, or receiving an RF signal of upstream data from the terminal, electro-optic converting the received RF signal to an optical signal in response to the TDD switching signal generated by the switch timing signal generation circuit, and transmitting the converted optical signal to the main donor via the optical fiber.

摘要翻译： 用于TDD无线系统中的信号传输的单波长双向RoF链路装置包括：主要供体，用于从上层接收下行数据的RF信号，将所接收的RF信号电光转换为光信号，并将转换后的光 响应于从上层接收的TDD切换信号，或经由光纤接收上行数据的光信号，经由光纤发送信号，响应于TDD切换信号将接收到的光信号光电转换为RF信号 从上层接收，并将转换的光信号发送到主供体; 以及遥控器，用于经由来自主施体的光纤接收下行数据的光信号，将所接收的光信号光电转换成RF信号，并响应于一个天线经由天线将转换的RF信号发射到终端 TDD切换信号，或者从终端接收上行数据的RF信号，根据切换定时信号生成产生的TDD切换信号将接收的RF信号电光转换为光信号 并且经由光纤将转换后的光信号发送到主供体。

公开(公告)号：US07733825B2

公开(公告)日：2010-06-08

申请号：US11514440

申请日：2006-09-01

申请人： Sang-Ho Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Gyu-Woong Lee ,  Hoon Kim ,  Sung-Kee Kim ,  Han-Lim Lee ,  Jae-Hoon Lee ,  Yong-Gyoo Kim ,  Dae-Eun Choi

发明人： Sang-Ho Kim ,  Yun-Je Oh ,  Seong-Taek Hwang ,  Byung-Jik Kim ,  Gyu-Woong Lee ,  Hoon Kim ,  Sung-Kee Kim ,  Han-Lim Lee ,  Jae-Hoon Lee ,  Yong-Gyoo Kim ,  Dae-Eun Choi

IPC分类号： H04W4/00 ,  H04L12/56

CPC分类号： H04W88/085

摘要： A radio over fiber (ROF) link apparatus capable of a stable TDD wireless service for a time division duplexing (TDD) baseband signal includes a central access platform (CAP) for receiving various kinds of data including the TDD baseband signal from upper layers, multiplexing the data, electro-optically converting the multiplexed data, and transmitting the converted data as downstream data through an optical fiber, and opto-electrically converting upstream data received through the optical fiber, demultiplexing the converted upstream data, and transmitting the demultiplexed upstream data to the respective upper layers, and a remote access unit (RAU) for receiving the downstream data through the optical fiber, opto-electrically converting the received downstream data to the multiplexed data, demultiplexing the multiplexed data, performing a wireless access process of the demultiplexed data, and transmitting the wireless access processed data to a wireless local area network (WLAN) service terminal through an antenna.

摘要翻译： 能够对TDD时基双工（TDD）基带信号进行稳定的TDD无线业务的无线电光纤（ROF）链路装置包括用于从上层接收包括TDD基带信号的各种数据的中央接入平台（CAP） 数据，电光转换多路复用数据，并通过光纤将转换后的数据作为下行数据发送，并对通过光纤接收的上行数据进行光电转换，对转换的上行数据进行解复用，并将解复用的上行数据发送到 各自的上层以及用于通过光纤接收下游数据的远程访问单元（RAU），将接收到的下游数据光电转换为多路复用数据，解复用多路复用数据，执行解复用数据的无线接入处理 ，并将无线接入处理的数据发送到无线局域网（WLAN）服务 e端子通过天线。

公开(公告)号：US20100026639A1

公开(公告)日：2010-02-04

申请号：US12347421

申请日：2008-12-31

申请人： Jae-Hoon Lee ,  Seiki Takahashi ,  Bong-Hyun You ,  Byoung-Jun Lee

发明人： Jae-Hoon Lee ,  Seiki Takahashi ,  Bong-Hyun You ,  Byoung-Jun Lee

IPC分类号： G06F3/041

CPC分类号： G06F3/0412

摘要： A liquid crystal display includes a liquid crystal panel that has a plurality of pixels and a plurality of sensors, and a touch sensing circuit that compares a sensing voltage detected by at least one sensor with a reference voltage that corresponds to the at least one sensor to determine the at least one sensor is touched. A level of the reference voltage is calibrated by taking operation characteristics of the sensors into consideration.

摘要翻译： 液晶显示器包括具有多个像素和多个传感器的液晶面板，以及将由至少一个传感器检测到的感测电压与对应于至少一个传感器的参考电压进行比较的触摸感测电路， 确定至少有一个传感器被触摸。 通过考虑传感器的操作特性来校准参考电压的电平。

公开(公告)号：US07394441B2

公开(公告)日：2008-07-01

申请号：US11269293

申请日：2005-11-08

申请人： Jae-Hoon Lee

发明人： Jae-Hoon Lee

IPC分类号： G09G3/30 ,  G09G3/10

CPC分类号： G09G3/3283 ,  G09G2310/0248 ,  G09G2310/027 ,  G09G2310/0289

摘要： There is provided a display apparatus including a data drive IC. The data drive IC includes a current-mode analog to digital converter (DAC) comprising a plurality of dynamic circuits (instead of conventional level shifters). In response to an enable signal received, each of the dynamic circuits convert a bit of an image data signal received from a signal input circuit into a high voltage level and outputs the resulting signal to a current switch that outputs current to a current node connected to a pixel. The data drive IC including the dynamic circuit has reduced chip area and reduced power consumption (compared to conventional ones comprising a plurality of level-shifters).

摘要翻译： 提供了一种包括数据驱动IC的显示装置。 数据驱动IC包括包括多个动态电路（而不是常规电平转换器）的电流模式模数转换器（DAC）。 响应于接收的使能信号，每个动态电路将从信号输入电路接收的图像数据信号的一位转换为高电压电平，并将所得到的信号输出到电流开关，该电流开关将电流输出到连接到 一个像素 包括动态电路的数据驱动IC具有减少的芯片面积和降低的功耗（与包括多个电平移位器的传统IC相比）。

公开(公告)号：US20080133991A1

公开(公告)日：2008-06-05

申请号：US11945352

申请日：2007-11-27

申请人： Jae-Hoon Lee

发明人： Jae-Hoon Lee

IPC分类号： G06F11/25

CPC分类号： G01R31/31715 ,  G01R31/318572

摘要： Noise may cause malfunction and reduction of yield in semiconductor devices operating with a low supply voltage, and a logic test is generally performed for testing characteristics of input/output pads. In the logic test, High Level Input Voltage (VIH), Low Level Input Voltage (VIL), and Input Signal Fault Detection may be considered. In a normal operation mode, the noise propagates through a logic chain by toggling of the test logic circuit, and a circuit can prevent the noise propagation using logical operations. Thus, a characteristic degradation due to the noise propagation may be reduced.

摘要翻译： 在低电源电压下工作的半导体器件的噪声可能导致误动作和降低产量，通常执行逻辑测试以测试输入/输出焊盘的特性。 在逻辑测试中，可以考虑高电平输入电压（VIH），低电平输入电压（VIL）和输入信号故障检测。 在正常工作模式下，通过切换测试逻辑电路，噪声通过逻辑链传播，电路可以通过逻辑运算来防止噪声传播。 因此，由于噪声传播引起的特性劣化可能降低。

公开(公告)号：US20080117961A1

公开(公告)日：2008-05-22

申请号：US11974402

申请日：2007-10-12

申请人： Shuangfeng Han ,  Seong-Taek Hwang ,  Hoon Kim ,  Sang-Ho Kim ,  Jae-Hun Cho ,  Jae-Hoon Lee ,  Ki-Uk Song

发明人： Shuangfeng Han ,  Seong-Taek Hwang ,  Hoon Kim ,  Sang-Ho Kim ,  Jae-Hun Cho ,  Jae-Hoon Lee ,  Ki-Uk Song

IPC分类号： H04L27/00

CPC分类号： H04W52/42 ,  H04B7/043 ,  H04B7/0617 ,  H04B7/0691 ,  H04L1/0625 ,  H04L1/0668 ,  H04W52/04

摘要： Disclosed is an apparatus and method for adaptively allocating transmission power for beamforming combined with orthogonal space-time block codes (OSTBC) in a distributed wireless communication system, the apparatus comprising: a plurality of sub-arrays for beamforming, which are geographically distributed and each of which comprises a plurality of distributed antennas placed in random groups; and a central processing unit for identifying performances of subsets by applying a predetermined power allocation scheme according to subsets which can be obtained by combining the sub-arrays, by means of a Nakagami fading parameter and information about large-scale fading of each of the sub-arrays, fed back from a receiving party, for determining a subset having a best performance as an optimal subset according to the identified performances, and for performing power allocation based on the subset set as the optimal subset.

摘要翻译： 公开了一种用于在分布式无线通信系统中自适应地分配与正交空时块码（OSTBC）组合的波束成形的发射功率的装置和方法，该装置包括：多个用于波束成形的子阵列，其在地理上分布并且每个 其中包括放置在随机组中的多个分布式天线; 以及中央处理单元，用于通过应用根据可以通过组合子阵列获得的子集的预定功率分配方案，通过Nakagami衰落参数和关于每个子级的大规模衰落的信息来应用子集的性能 - 从接收方反馈的用于根据所识别的性能确定具有最佳性能的子集作为最佳子集的子阵列，以及用于基于所述子集作为所述最佳子集执行功率分配。

公开(公告)号：US07375700B2

公开(公告)日：2008-05-20

申请号：US11230971

申请日：2005-09-20

申请人： Seong-Taek Hwang ,  Jae-Hoon Lee ,  Young-Sik Kim ,  Ji-Chai Jeong ,  Jung-Woo Baek ,  Young-Je Sung

发明人： Seong-Taek Hwang ,  Jae-Hoon Lee ,  Young-Sik Kim ,  Ji-Chai Jeong ,  Jung-Woo Baek ,  Young-Je Sung

IPC分类号： H01Q1/50 ,  H01Q1/24

CPC分类号： H01Q9/40 ,  H01Q5/50 ,  H01Q9/0485

摘要： A wideband monopole antenna assembly includes a substrate having an antenna connector, a wideband monopole antenna positioned on the substrate, and a feeder unit positioned on the rear surface of the substrate for supporting the antenna with a part thereof bent at a predetermined angle. The wideband monopole antenna has a feeder portion shorter than conventional antennas for compactness of the antenna.

摘要翻译： 宽带单极天线组件包括具有天线连接器的基板，位于基板上的宽带单极天线，以及位于基板的后表面上的馈电单元，用于支撑天线，其一部分以预定角度弯曲。 宽带单极天线具有比常规天线更短的馈电部分，用于天线的紧凑性。

公开(公告)号：US20080040090A1

公开(公告)日：2008-02-14

申请号：US11888535

申请日：2007-08-02

申请人： Jae-Hoon Lee

发明人： Jae-Hoon Lee

IPC分类号： G06F17/50 ,  G06F9/45

CPC分类号： G06F17/5009 ,  G06F2217/62 ,  G06F2217/66 ,  G06F2217/84

摘要： A method and an apparatus for indirectly simulating a semiconductor integrated circuit (IC) are described. A circle chain is formed using input pins and output pins to provide an intellectual property (IP) core model that substitutes for a real IP core circuit. A test bench for the IP core model is generated, the semiconductor IC that includes the IP core model is integrated using the generated test bench, and the semiconductor IC is simulated.

摘要翻译： 描述用于间接模拟半导体集成电路（IC）的方法和装置。 使用输入引脚和输出引脚形成环形链，以提供替代真实IP核心电路的知识产权（IP）核心模型。 生成IP核心模型的测试台，使用生成的测试台集成了包含IP核模型的半导体IC，模拟半导体IC。

公开(公告)号：US20070258432A1

公开(公告)日：2007-11-08

申请号：US11642260

申请日：2006-12-20

申请人： Jae-Hoon Lee ,  Byung-Jik Kim ,  Seong-Taek Hwang ,  Sang-Ho Kim

发明人： Jae-Hoon Lee ,  Byung-Jik Kim ,  Seong-Taek Hwang ,  Sang-Ho Kim

IPC分类号： H04B7/212

CPC分类号： H04B10/25758 ,  H04B7/2606

摘要： A single wavelength bi-directional RoF link apparatus for signal transmission in a TDD wireless system includes a main donor for receiving an RF signal of downstream data from an upper layer, electrooptic converting the received RF signal to an optical signal, and transmitting the converted optical signal via an optical fiber in response to a TDD switching signal received from the upper layer, or receiving an optical signal of upstream data via the optical fiber, opto-electric converting the received optical signal to an RF signal in response to the TDD switching signal received from the upper layer, and transmitting the converted optical signal to the main donor; and a remote for receiving the optical signal of the downstream data via the optical fiber from the main donor, opto-electric converting the received optical signal to an RF signal, and emitting the converted RF signal to a terminal via an antenna in response to a TDD switching signal generated by a switch timing signal generation circuit, or receiving an RF signal of upstream data from the terminal, electro-optic converting the received RF signal to an optical signal in response to the TDD switching signal generated by the switch timing signal generation circuit, and transmitting the converted optical signal to the main donor via the optical fiber.

摘要翻译： 在TDD无线系统中用于信号传输的单波长双向RoF链路装置包括：主要供体，用于从上层接收下行数据的RF信号，将所接收的RF信号电光转换成光信号，并将转换后的光 响应于从上层接收的TDD切换信号，或经由光纤接收上行数据的光信号，经由光纤发送信号，响应于TDD切换信号将接收到的光信号光电转换为RF信号 从上层接收，并将转换的光信号发送到主供体; 以及遥控器，用于经由来自主施体的光纤接收下行数据的光信号，将所接收的光信号光电转换成RF信号，并响应于一个天线经由天线将转换的RF信号发射到终端 TDD切换信号，或者从终端接收上行数据的RF信号，根据切换定时信号生成产生的TDD切换信号将接收的RF信号电光转换为光信号 并且经由光纤将转换后的光信号发送到主供体。