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    • 1. 发明授权
    • Wireless communication system and method using multiple antennas
    • 使用多个天线的无线通信系统和方法
    • US07406337B2
    • 2008-07-29
    • US10778340
    • 2004-02-17
    • Sung-jin KimJianjun LiHo-jin KimEung-sun Kim
    • Sung-jin KimJianjun LiHo-jin KimEung-sun Kim
    • H04B1/38H04M1/00
    • H04B7/0636H04B7/0452H04B7/0634H04W52/262H04W52/42
    • A wireless communication system, and method using multiple antennas, includes a base station that applies predetermined weight vectors to multi-user signals and transmits the multi-user signals through a plurality of transmission antennas, and a plurality of mobile stations that receive and process the multi-user signals, wherein each mobile station includes a signal reception unit that processes the multi-user signals, and a feedback signal generation unit that estimates channel characteristics, over which the multi-user signals have been transmitted, from the multi-user signals, classifies a plurality of weight vectors to be applied to the estimated channel characteristics into a plurality of sets such that vectors orthogonal to one another are classified into a single set, selects a set maximizing a transmission capacity from among the classified sets, and feeds back weight indexes of weight vectors included in the selected set and weighted channel information to the base station.
    • 一种使用多个天线的无线通信系统和方法,包括对多用户信号应用预定权重向量并通过多个发送天线发送多用户信号的基站,以及接收和处理多个用户信号的多个移动台 多用户信号,其中每个移动站包括处理多用户信号的信号接收单元,以及反馈信号生成单元,其从多用户信号估计多用户信号已被发送的信道特性 将要应用于估计的信道特性的多个权重向量分类为多个集合,使得彼此正交的矢量被分类为单个集合,从分类集合中选择最大化传输容量的集合,并且反馈 所选择的集合中包括的加权向量的权重索引和加权的信道信息到基站。
    • 3. 发明授权
    • Very high speed digital subscriber line receiver, and programmable gain amplifier and narrow-band noise remover thereof
    • 超高速数字用户线接收器,以及可编程增益放大器及其窄带噪声去除器
    • US06459727B1
    • 2002-10-01
    • US09289991
    • 1999-04-13
    • Myeon-kyun ChoEung-sun Kim
    • Myeon-kyun ChoEung-sun Kim
    • H04B138
    • H03G3/3052H03G3/3089H04B1/1036H04B3/04H04L27/2647
    • A very high digital subscriber line (VDSL) receiver, and a programmable gain amplifier (PGA) and a narrow-band noise remover thereof. The VDSL receiver includes: a first programmable gain amplifier (PGA) for controlling gain to output a signal having a predetermined amplitude and amplifying the input signal according to the controlled gain; a narrow-band noise remover for detecting the narrow-band noise from the output signal of the first PGA, modeling the narrow-band noise to remove the noise from the output signal of the first PGA if the narrow-band noise is detected, and outputting the inherent output signal of the first PGA if the narrow-band signal is not detected; a second PGA for amplifying the output signal from the narrow-band noise remover based on the gain controlled by the first PGA if narrow-band noise exists, and outputting the inherent output signal of the narrow-band noise remover without amplification if narrow-band noise is not detected; an equalizer for compensating for the deteriorated characteristics of the output signal from the second PGA; and a slicer for converting the output signal of the equalizer into a digital signal. Thus, a desired level of the input signal can be maintained against sudden inflow of an external interference signal, so that error generated by sudden change in power can be prevented. Accordingly, a VDSL system adopting the receiver can function normally regardless of inflow of a high-power signal.
    • 非常高的数字用户线(VDSL)接收机和可编程增益放大器(PGA)及其窄带噪声去除器。 VDSL接收机包括:第一可编程增益放大器(PGA),用于控制增益以输出具有预定幅度的信号,并根据受控增益放大输入信号; 窄带噪声去除器,用于从第一PGA的输出信号中检测窄带噪声,对窄带噪声进行建模,如果检测到窄带噪声,则从第一PGA的输出信号中消除噪声;以及 如果未检测到窄带信号,则输出第一PGA的固有输出信号; 第二PGA,如果存在窄带噪声,则基于由第一PGA控制的增益来放大来自窄带噪声去除器的输出信号,并且如果窄带噪声去除器输出窄带噪声去除器的固有输出信号, 没有检测到噪音; 均衡器,用于补偿来自第二PGA的输出信号的劣化特性; 以及用于将均衡器的输出信号转换为数字信号的限幅器。 因此,可以保持输入信号的期望水平以防止外部干扰信号的突然流入,从而可以防止由突然的功率变化产生的误差。 因此,采用接收机的VDSL系统可以正常工作,而不管高功率信号的流入。
    • 6. 发明申请
    • Method and system for displaying a menu which has an icon
    • 用于显示具有图标的菜单的方法和系统
    • US20060103662A1
    • 2006-05-18
    • US10985867
    • 2004-11-12
    • Eung-sun Kim
    • Eung-sun Kim
    • G09G5/02
    • H04N21/47217H04N5/44543H04N9/87H04N21/42219H04N21/4312
    • A menu displaying system and method having an icon for editing image data in an AV (Audio and Video) device, the AV device having a recording medium capable of storing image data and audio data, and which is capable of reproducing image data and audio data. The method comprises steps for displaying icons and additional information corresponding to the image data stored at the recording medium, selecting one of the icons displayed, and reproducing image data corresponding to the selected icon. A corresponding program stored at the AV device having a recording media such as a hard disc drive, is then reproduced upon a menu screen such that image data stored at the AV device can be easily observed.
    • 一种具有用于在AV(音频和视频)设备中编辑图像数据的图标的菜单显示系统和方法,该AV设备具有能够存储图像数据和音频数据的记录介质,并且能够再现图像数据和音频数据 。 该方法包括用于显示与存储在记录介质上的图像数据相对应的图标和附加信息的步骤,选择显示的图标之一,并再现对应于所选图标的图像数据。 然后,在菜单屏幕上再现存储在具有诸如硬盘驱动器之类的记录介质的AV设备上的相应程序,使得可以容易地观察存储在AV设备中的图像数据。
    • 7. 发明申请
    • Analog and digital broadcasting receiver
    • 模拟和数字广播接收机
    • US20050198683A1
    • 2005-09-08
    • US10989457
    • 2004-11-17
    • Eung-sun Kim
    • Eung-sun Kim
    • H04N5/46H04N7/16H04N7/173
    • H04N5/46H04N5/64H04N21/42638
    • An analog and digital receiver includes an analog broadcasting receiver section for receiving and reproducing analog broadcasting signals, and a digital broadcasting receiver section for receiving and reproducing digital broadcasting signals, which receiver sections are installed within a single housing. The analog and digital receiver include an analog tuner for selecting an analog broadcasting and a digital tuner for selecting a digital broadcasting, wherein an output stage of the digital tuner is wire-connected to an input stage of the analog tuner or an output stage of the analog tuner is wire-connected to an input stage of the digital tuner.
    • 模拟和数字接收机包括用于接收和再现模拟广播信号的模拟广播接收器部分,以及用于接收和再现数字广播信号的数字广播接收器部分,该接收机部分安装在单个外壳内。 模拟和数字接收机包括用于选择模拟广播的模拟调谐器和用于选择数字广播的数字调谐器,其中数字调谐器的输出级有线连接到模拟调谐器的输入级或者输出级 模拟调谐器有线连接到数字调谐器的输入级。
    • 9. 发明授权
    • Apparatus for receiving digital subscriber line signal having resilience to HAM radio interference and method therefor
    • 用于接收具有HAM无线电干扰弹性的数字用户线路信号的装置及其方法
    • US06654430B1
    • 2003-11-25
    • US09417687
    • 1999-10-13
    • Eung-sun KimMyeon-kyun ChoKi-ho KimChong-dae YimKyu-min KangGi-hong Im
    • Eung-sun KimMyeon-kyun ChoKi-ho KimChong-dae YimKyu-min KangGi-hong Im
    • H03D104
    • H04B1/1036
    • A digital subscriber line receiving apparatus having resilience to HAM radio interference noise and a method therefore includes an automatic gain controller for amplifying a received signal level to a signal level having a predetermined magnitude, a timing recoverer for recovering timing from a signal output from the automatic gain controller, an equalizer for removing interference noise from a signal received from the timing recoverer, a slicer for detecting a digital value from a signal received from the equalizer, an initialization controller for resetting the receiving apparatus and initializing the automatic gain controller, the timing recoverer, and the equalizer when the signal to noise ratio of the output signal of the equalizer is smaller than a reference signal to noise ratio, and an update controller for preventing automatic gain controller and equalizer from being initialized by the initialization controller when HAM radio interference noise is detected in the received signal.
    • 一种具有HAM无线电干扰噪声的弹性的数字用户线路接收装置,其方法包括:一个自动增益控制器,用于将接收信号电平放大到具有预定幅度的信号电平;一个定时恢复器,用于从自动 增益控制器,用于从从定时恢复器接收的信号中去除干扰噪声的均衡器,用于从从均衡器接收的信号中检测数字值的限幅器,用于复位接收装置和初始化自动增益控制器的初始化控制器, 并且当均衡器的输出信号的信噪比小于参考信噪比时的均衡器,以及当HAM无线电干扰时用于防止自动增益控制器和均衡器被初始化控制器初始化的更新控制器 在接收到的符号中检测到噪声 al。