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    • 52. 发明授权
    • Flexible diversity combine receiver architecture for digital television
    • 灵活的分集结合了数字电视的接收机架构
    • US07792221B2
    • 2010-09-07
    • US11306865
    • 2006-01-13
    • Che-Li Lin
    • Che-Li Lin
    • H03D1/00
    • H04N5/4401H04B7/0837H04L1/0036H04L1/06H04L2001/0096H04N21/426H04N21/4305H04N21/4382H04N21/44209H04N21/4622
    • A method of generating a smoothed transport stream to an MPEG decoder for a diversity combine digital television receiver includes generating a plurality of synchronization clocks and demodulated signals according to a plurality of digital television signals received from a plurality of antennas; monitoring a signal quality associated with each of the digital television signals; combining at least demodulated signals having a signal quality being greater than a predetermined threshold to thereby form a combined signal; generating transport stream packets according to the combined signal; selecting a synchronization signal corresponding to a digital television signal having a signal quality being greater than a second predetermined threshold as a selected synchronization signal; and generating a smoothed transport stream having packets being uniformly spaced according to the transport stream packets and the selected synchronization signal.
    • 一种为分集组合数字电视接收机生成MPEG解码器的平滑传输流的方法包括根据从多个天线接收的多个数字电视信号产生多个同步时钟和解调信号; 监视与每个数字电视信号相关联的信号质量; 至少组合信号质量大于预定阈值的解调信号,从而形成组合信号; 根据组合信号生成传输流分组; 选择与具有大于第二预定阈值的信号质量的数字电视信号相对应的同步信号作为选择的同步信号; 以及产生具有根据传输流分组和所选同步信号均匀间隔的分组的平滑传输流。
    • 55. 发明申请
    • RESET SIGNAL FILTER
    • 复位信号滤波器
    • US20100026357A1
    • 2010-02-04
    • US12344198
    • 2008-12-24
    • Cheng-Hsun ChanChe-Li Lin
    • Cheng-Hsun ChanChe-Li Lin
    • H03K3/02
    • H03K17/22H03K5/1252
    • A reset signal filter includes a power voltage detector and a reset signal detector or includes only one reset signal detector. The power voltage detector includes a comparators and a basic logic gates (e.g. AND gate, OR gate, inverter, etc). The reset signal detector includes a comparator, N flip flops connected in series, an AND gate, an OR gate, a multiplexer and an output flip flop. The reset signal filter receives a first reset signal generated by a power voltage detector or a Schmitt trigger buffer and utilizes N flip flops to register the signal level of the first reset signal for N clock periods. Then the reset signal filter determines if the first rest signal is changed during N clock periods, and outputs a second reset signal.
    • 复位信号滤波器包括电源电压检测器和复位信号检测器,或仅包括一个复位信号检测器。 电源电压检测器包括比较器和基本逻辑门(例如,与门,或门,反相器等)。 复位信号检测器包括比较器,串联连接的N个触发器,与门,或门,复用器和输出触发器。 复位信号滤波器接收由电源电压检测器或施密特触发缓冲器产生的第一复位信号,并利用N个触发器在N个时钟周期内对第一复位信号的信号电平进行寄存。 然后,复位信号滤波器确定在N个时钟周期期间是否改变第一个静止信号,并输出第二个复位信号。
    • 59. 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。
    • 60. 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。