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    • 61. 发明授权
    • System and method to adjust searcher threshold parameter of rake receiver
    • 调整rake接收机的搜索器阈值参数的系统和方法
    • US07283578B2
    • 2007-10-16
    • US10377453
    • 2003-02-28
    • Che-Li LinSheng-Jie Chen
    • Che-Li LinSheng-Jie Chen
    • H04B1/69H04B1/707H04B1/713
    • H04B1/70755H04B1/7113H04B1/7115H04B1/7117H04B1/712
    • This present invention is a system and method to adjust a searcher threshold parameter of a RAKE receiver. The adjusting system includes a searcher, a power estimator, and a parameter control apparatus. When the searcher finds and acquires a new path signal, the power estimator will estimate the power of the new path signal and that of the other path signals. The parameter control apparatus will calculate and monitor the power ratio corresponding to the new path signal. If the power ratio remains smaller than a predetermined power ratio parameter for a first predetermined times, the parameter control apparatus will increase the value of the threshold parameter. If the power ratio remains unchanged for a second predetermined times, the parameter control apparatus will lower the value of the threshold parameter. After that, the searcher will acquire the path signals among the multipath signal being searched in accordance with the adjusted threshold parameter. With this adjusted threshold parameter, the present invention can improve the sensitivity of the searcher, acquire the correct path signals in various environments, and provide the correct position of the path signal to the RAKE receiver.
    • 本发明是一种调整RAKE接收机的搜索者阈值参数的系统和方法。 调整系统包括搜索器,功率估计器和参数控制装置。 当搜索者发现并获取新的路径信号时,功率估计器将估计新路径信号的功率和其他路径信号的功率。 参数控制装置将计算并监视与新路径信号对应的功率比。 如果第一预定次数的功率比保持小于预定功率比参数,则参数控制装置将增加阈值参数的值。 如果功率比在第二预定时间内保持不变,则参数控制装置将降低阈值参数的值。 之后,搜索器将根据调整后的阈值参数获得被搜索的多径信号之间的路径信号。 利用该调整后的阈值参数,本发明可以提高搜索者的灵敏度,在各种环境中获取正确的路径信号,并将路径信号的正确位置提供给RAKE接收机。
    • 62. 发明授权
    • Method for WCDMA frame synchronization and related device
    • WCDMA帧同步方法及相关设备
    • US07254163B2
    • 2007-08-07
    • US10707663
    • 2003-12-31
    • Sheng-Jie ChenChe-Li Lin
    • Sheng-Jie ChenChe-Li Lin
    • H04B1/00H04J3/06
    • H04B1/70775H04B1/70735H04B1/7083H04B1/709
    • A method for performing frame synchronization in a WCDMA system includes first, correlating a received signal with a plurality of predetermined correlators to obtain a plurality of frame synchronization correlation results, then, coherently combining frame synchronization correlation results with a slot synchronization phase when a test phase difference is less than a threshold phase difference, or, coherently combining frame synchronization correlation results with a linear combination of slot synchronization phases when the test phase difference is greater than or equal to the threshold phase difference. The slot synchronization phase is determined by correlating the received signal with a slot synchronization sequence. Lastly, the method determines a frame boundary of the received signal based on the coherent combination results. The method accommodates for a changing signal to noise ratio to improve frame synchronization speed and accuracy.
    • 一种用于在WCDMA系统中执行帧同步的方法包括首先将接收信号与多个预定相关器相关联以获得多个帧同步相关结果,然后在测试阶段相干地将帧同步相关结果与时隙同步相结合 差值小于阈值相位差,或者当测试相位差大于或等于阈值相位差时,将帧同步相关结果与时隙同步相位的线性组合相干组合。 通过将接收的信号与时隙同步序列相关联来确定时隙同步相位。 最后,该方法基于相干组合结果确定接收信号的帧边界。 该方法适应变化的信噪比,从而提高帧同步速度和精度。
    • 63. 发明授权
    • Rake finger receiver and method therefor in a spread spectrum communication system
    • 耙指接收机及其方法在扩频通信系统中
    • US07200133B2
    • 2007-04-03
    • US10285435
    • 2002-11-01
    • Che-Li Lin
    • Che-Li Lin
    • H04B7/216
    • H04B1/7085H04B1/7117H04B2201/7071
    • A rake finger receiver and control method therefor, for use in a wireless spread communication system. The rake finger receiver includes a multiplexer, a searcher, a first switch fabric, a rake fingers and tracking pool, a second switch fabric, a combiner, a decoder, a channel estimator, and a rake finger controller. One searcher is used to serve multiple antennas of a base station so as to reduce the system complexity. The number of the rake fingers assigned for processing multipath components associated with a radio link is determined dynamically. Thus, the resource is utilized efficiently.
    • 一种用于无线传播通信系统的耙指接收机及其控制方法。 耙指接收器包括多路复用器,搜索器,第一交换结构,耙指和跟踪池,第二交换结构,组合器,解码器,信道估计器和耙指控制器。 一个搜索器用于服务于基站的多个天线,以便降低系统的复杂度。 分配用于处理与无线电链路相关联的多路径分量的耙指的数量被动态地确定。 因此,资源被有效利用。
    • 64. 发明申请
    • Orthogonal frequency division multiplexing receiver capable of canceling impulse interference
    • 能消除脉冲干扰的正交频分复用接收机
    • US20070030913A1
    • 2007-02-08
    • US11196353
    • 2005-08-04
    • Che-Li Lin
    • Che-Li Lin
    • H04K1/10
    • H04L27/2647H04L1/0047H04L1/0065H04L1/0071H04L25/0204
    • An orthogonal frequency-division multiplexing (OFDM) receiver that has a capability for canceling impulse interference is introduced in the present invention. The OFDM receiver includes an impulse noise remover for receiving incoming signals and canceling the impulse interference and a demodulator to demodulate the incoming signals. The impulse noise remover includes an analog-to-digital converter (ADC) that converts the incoming signals into multiple signal points, a delay line for temporarily storing the signal points, a signal processor for calculating a summation of a number of the signals points, a thresholder for checking if an input level provided by the signal processor according to the summation is greater than a predetermined threshold and a switch for replacing values of the signal points influenced by the impulse interference by zeros if the input level is greater than the predetermined threshold.
    • 在本发明中引入了具有消除脉冲干扰能力的正交频分复用(OFDM)接收机。 OFDM接收机包括用于接收输入信号并消除脉冲干扰的脉冲噪声去除器和解调器来解调输入信号。 脉冲噪声去除器包括将输入信号转换成多个信号点的模数转换器(ADC),用于临时存储信号点的延迟线,用于计算多个信号点的求和的信号处理器, 用于检查由信号处理器提供的根据求和的输入电平是否大于预定阈值的阈值,以及用于如果输入电平大于预定阈值,用于替换受脉冲干扰影响的信号点的值的开关 。
    • 65. 发明申请
    • SOURCE DRIVER AND THE DATA SWITCHING CIRCUIT THEREOF
    • 源驱动器及其数据切换电路
    • US20070013640A1
    • 2007-01-18
    • US11162837
    • 2005-09-26
    • Che-Li LinChang-San Chen
    • Che-Li LinChang-San Chen
    • G09G3/36
    • G09G3/3688G09G3/3614G09G2310/0289G09G2330/021
    • A data switching circuit is provided, which reduces power consumption of the source drivers when used together with a dot inversion driving method. The circuit comprises a control unit and a switching unit. Wherein, the control unit provides a switching signal. The switching unit has 2N input terminals and 2N output terminals and receives the switching signal. Assume that N is a positive integer and 1≦i≦N. When the switching signal is in a first state, the switching unit connects the (2i−1)th input terminal and the (2i−1)th output terminal, and connects the 2ith input terminal and the 2ith output terminal. When the switching signal is in a second state, the switching unit connects the 2ith input terminal and the (2i−1)th output terminal, and connects the (2i−1)th input terminal and the 2ith output terminal.
    • 提供数据切换电路,当与点反转驱动方法一起使用时,其降低了源极驱动器的功耗。 电路包括控制单元和开关单元。 其中,控制单元提供切换信号。 开关单元具有2N个输入端子和2N个输出端子,并接收开关信号。 假设N是正整数,1 <= i <= N。 当切换信号处于第一状态时,切换单元连接(2i-1)输入端子和(2i-1)输出端子,并连接 2i 输入端子和第2i 输出端子。 当切换信号处于第二状态时,切换单元连接第2i 输入端和(2i-1)输出端,并将(2i- 1)输入端子和第2i 输出端子。
    • 68. 发明申请
    • METHOD FOR WCDMA FRAME SYNCHRONIZATION AND RELATED DEVICE
    • 用于WCDMA帧同步和相关设备的方法
    • US20050147157A1
    • 2005-07-07
    • US10707663
    • 2003-12-31
    • Sheng-Jie ChenChe-Li Lin
    • Sheng-Jie ChenChe-Li Lin
    • H04B1/707H04B1/69
    • H04B1/70775H04B1/70735H04B1/7083H04B1/709
    • A method for performing frame synchronization in a WCDMA system includes first, correlating a received signal with a plurality of predetermined correlators to obtain a plurality of frame synchronization correlation results, then, coherently combining frame synchronization correlation results with a slot synchronization phase when a test phase difference is less than a threshold phase difference, or, coherently combining frame synchronization correlation results with a linear combination of slot synchronization phases when the test phase difference is greater than or equal to the threshold phase difference. The slot synchronization phase is determined by correlating the received signal with a slot synchronization sequence. Lastly, the method determines a frame boundary of the received signal based on the coherent combination results. The method accommodates for a changing signal to noise ratio to improve frame synchronization speed and accuracy.
    • 一种用于在WCDMA系统中执行帧同步的方法包括首先将接收信号与多个预定相关器相关联以获得多个帧同步相关结果,然后在测试阶段相干地将帧同步相关结果与时隙同步相结合 差值小于阈值相位差,或者当测试相位差大于或等于阈值相位差时,将帧同步相关结果与时隙同步相位的线性组合相干组合。 通过将接收的信号与时隙同步序列相关联来确定时隙同步相位。 最后,该方法基于相干组合结果确定接收信号的帧边界。 该方法适应变化的信噪比,从而提高帧同步速度和精度。
    • 69. 发明授权
    • Control method for eliminating deficient display and a display device using the same and driving circuit using the same
    • 用于消除不良显示的控制方法和使用该显示装置的显示装置以及使用其的驱动电路
    • US08325173B2
    • 2012-12-04
    • US11832656
    • 2007-08-02
    • Che-Li Lin
    • Che-Li Lin
    • G06F3/038
    • G09G3/3688G09G3/3677G09G2310/0245G09G2330/06
    • A control method for eliminating deficient display and a display device using the same and a driving circuit are provided herein. The display device includes a display panel, source driver, and a control device. The display panel includes a plurality of pixels. The source driver is used to provide a pixel voltage to the pixel. The control device determines whether to provide a first voltage to the pixels, and controls the source driver whether to provide the pixel voltage to the pixel, according to a control signal. When a system voltage of the display device is less than a predefined voltage, the control device controls the source driver to stop providing the pixel voltage to the pixel, and provides a first voltage to the pixel.
    • 本发明提供一种消除缺陷显示的控制方法和使用该控制方法的显示装置和驱动电路。 显示装置包括显示面板,源驱动器和控制装置。 显示面板包括多个像素。 源驱动器用于向像素提供像素电压。 控制装置根据控制信号确定是否向像素提供第一电压,并且控制源驱动器是否向像素提供像素电压。 当显示装置的系统电压小于预定电压时,控制装置控制源极驱动器停止向像素提供像素电压,并向像素提供第一电压。