会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Frequency synchronization apparatus and method in OFDM system
    • OFDM系统中的频率同步装置和方法
    • US08275059B2
    • 2012-09-25
    • US12477269
    • 2009-06-03
    • Bon Young KooHyung Jin ChoiSe Bin ImJung In Kim
    • Bon Young KooHyung Jin ChoiSe Bin ImJung In Kim
    • H04L27/28
    • H04L27/2657H04L27/2676H04L27/2688
    • A frequency synchronization apparatus includes: a correlating unit that obtains a first correlation value by correlating a known reference guard interval of an OFDM symbol and a reference copy interval corresponding to the reference guard interval, and obtains a second correlation value by correlating the estimate guard interval and an estimate copy interval corresponding to the estimate guard interval; a determining unit that compares the first and second correlation values to determine a first case where the first correlation value is larger by a pre-set magnification than the second correlation value, a second case where the second correlation value is larger by a pre-set magnification than the first correlation value, and a third case which is not the first case nor the second case; and a frequency offset estimating unit that estimates a frequency offset by using a correlation value corresponding to any one of the first to third.
    • 频率同步装置包括:相关单元,通过将OFDM符号的已知参考保护间隔与对应于参考保护间隔的参考复制间隔相关联来获得第一相关值,并且通过将估计保护间隔 以及对应于估计保护间隔的估计复制间隔; 确定单元,其比较所述第一和第二相关值,以确定所述第一相关值比所述第二相关值大预定倍数的第一情况,所述第二相关值大于预设值的第二情况 并且不是第一种情况的第三种情况也不是第二种情况; 以及频率偏移估计单元,其通过使用与第一至第三中的任一个相对应的相关值来估计频率偏移。
    • 2. 发明申请
    • FREQUENCY SYNCHRONIZATION APPARATUS AND METHOD IN OFDM SYSTEM
    • OFDM系统中的频率同步装置和方法
    • US20100142632A1
    • 2010-06-10
    • US12477269
    • 2009-06-03
    • Bon Young KooHyung Jin ChoiSe Bin ImJung In Kim
    • Bon Young KooHyung Jin ChoiSe Bin ImJung In Kim
    • H04L27/28
    • H04L27/2657H04L27/2676H04L27/2688
    • A frequency synchronization apparatus includes: a correlating unit that obtains a first correlation value by correlating a known reference guard interval of an OFDM symbol and a reference copy interval corresponding to the reference guard interval, and obtains a second correlation value by correlating the estimate guard interval and an estimate copy interval corresponding to the estimate guard interval; a determining unit that compares the first and second correlation values to determine a first case where the first correlation value is larger by a pre-set magnification than the second correlation value, a second case where the second correlation value is larger by a pre-set magnification than the first correlation value, and a third case which is not the first case nor the second case; and a frequency offset estimating unit that estimates a frequency offset by using a correlation value corresponding to any one of the first to third.
    • 频率同步装置包括:相关单元,通过将OFDM符号的已知参考保护间隔与对应于参考保护间隔的参考复制间隔相关联来获得第一相关值,并且通过将估计保护间隔 以及对应于估计保护间隔的估计复制间隔; 确定单元,其比较所述第一和第二相关值,以确定所述第一相关值比所述第二相关值大预定倍数的第一情况,所述第二相关值大于预设值的第二情况 并且不是第一种情况的第三种情况也不是第二种情况; 以及频率偏移估计单元,其通过使用与第一至第三中的任一个相对应的相关值来估计频率偏移。
    • 5. 发明授权
    • Signal duty detecting apparatus and motor driving apparatus having the same
    • 信号占空比检测装置和具有该信号功率检测装置的马达驱动装置
    • US08928268B2
    • 2015-01-06
    • US13585335
    • 2012-08-14
    • Bon Young Koo
    • Bon Young Koo
    • H02P1/30
    • H02P27/08G01R29/023H02P6/15
    • There are provided a signal duty detecting apparatus detecting a duty of a pulse width modulation (PWM) signal by counting a signal, among signals present in a preset period of the PWM signal, having a predetermined level or higher and a motor driving apparatus having the same. The signal duty detecting apparatus includes: a level detector detecting levels of an input signal; a counter counting the levels detected by the level detector; and a duty calculator calculating a duty of the input signal based on the levels counted by the counter.
    • 提供一种信号占空比检测装置,通过对存在于PWM信号的预设周期中的信号中的信号进行计数来检测脉宽调制(PWM)信号的占空比,具有预定电平或更高级别的电机驱动装置以及具有 相同。 信号占空比检测装置包括:电平检测器,检测输入信号的电平; 计数由电平检测器检测到的电平的计数器; 以及占空比计算器,其基于由计数器计数的电平来计算输入信号的占空比。
    • 7. 发明授权
    • Motor driving apparatus and method
    • 电机驱动装置及方法
    • US08593089B2
    • 2013-11-26
    • US13421490
    • 2012-03-15
    • Bon Young Koo
    • Bon Young Koo
    • H02P6/16
    • H02P6/08H02P6/16H02P6/17
    • There are provided a motor driving apparatus and method. The motor driving apparatus includes: a speed detecting unit detecting a rotation speed of a motor according to an edge of a hall signal, and counting a preset clock signal while allocating a weighted value thereto according to a preset reference count value at the time of counting the clock signal based on the detected speed; a position calculating unit calculating a rotation position of the motor according to a count value of the speed detecting unit; and a driving unit driving the motor according to position information of the motor calculated by the position calculating unit.
    • 提供了一种电动机驱动装置和方法。 电动机驱动装置包括:速度检测单元,根据门厅信号的边缘检测电动机的转速,并且在计数时对预设的时钟信号进行计数,同时根据计数时的预设基准计数值向其分配加权值 基于检测速度的时钟信号; 位置计算单元,根据速度检测单元的计数值来计算电动机的旋转位置; 以及驱动单元,其根据由所述位置计算单元计算出的所述电动机的位置信息来驱动所述电动机。
    • 8. 发明授权
    • Time-domain IQ mismatch detection apparatus of OFDM receiver
    • OFDM接收机的时域IQ失配检测装置
    • US07903771B2
    • 2011-03-08
    • US11947508
    • 2007-11-29
    • Young Ha ChoKyung Uk KimBon Young Koo
    • Young Ha ChoKyung Uk KimBon Young Koo
    • H03D1/04
    • H04L27/2647H04B1/30H04L27/3863
    • A time-domain IQ mismatch detection apparatus for detecting mismatch between an I-channel signal and a Q-channel signal in unit of a sample included in a symbol of an OFDM signal comprises: a first delayer which delays an input I-channel signal by one sample interval; a second delayer which delays an input Q-channel signal by one sample interval; a first phase mismatch detector which multiplies a currently-input I-channel signal with a currently-input Q-channel signal and output a result thereof; a second phase mismatch detector which multiplies the currently-input I-channel signal and the delayed Q-channel signal and output a result thereof; a third phase mismatch detector which multiplies the delayed I-channel signal with the currently-input Q-channel signal and output a result thereof; and a phase error arithmetic unit which outputs a phase error value calculated using the outputs of the first, second and third phase mismatch detectors.
    • 用于检测包含在OFDM信号的符号中的样本的I信道信号和Q信道信号之间的失配的时域IQ失配检测装置包括:第一延迟器,其将输入的I信道信号延迟 一个采样间隔; 第二延迟器,其将输入Q信道信号延迟一个采样间隔; 第一相位不匹配检测器,其将当前输入的I信道信号与当前输入的Q信道信号相乘并输出其结果; 第二相位不匹配检测器,其将当前输入的I信道信号和延迟的Q信道信号相乘并输出其结果; 第三相位不匹配检测器,将延迟的I信道信号与当前输入的Q信道信号相乘,并输出其结果; 以及相位误差运算单元,输出使用第一,第二和第三相位不匹配检测器的输出计算出的相位误差值。