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11. 发明公开

EP1821407A1 OFDM channel estimation systems 有权转让
标题翻译：系统zur OFDM-Kanalschätzung
公开(公告)号：EP1821407A1
公开(公告)日：2007-08-22
申请号：EP06075405.8
申请日：2006-02-21
申请人： Frontier Silicon Limited
发明人： McNally, Conor
IPC分类号： H03H17/04 , H04L25/02
CPC分类号： H03H17/0416 , H04L5/0007 , H04L5/0048 , H04L25/022 , H04L25/0226 , H04L25/0232 , H04L27/2647
摘要： A digital filter, the filter comprising: an input to receive complex-valued input samples; an up-sampler coupled to said input to provide an up-sampled output comprising an increased number of said input samples; a filter coupled to said up-sampler to filter said up-sampled output and provide a filtered output; a phase rotation estimator coupled to said input and to said filtered output to estimate a phase rotation of a said input sample by said filter; and a phase compensator coupled to said filtered output and to said phase rotation estimator to compensate said filtered output for said estimated phase rotation.
摘要翻译：一种数字滤波器，所述滤波器包括：用于接收复值输入样本的输入; 上采样器，耦合到所述输入端以提供包括增加数量的所述输入采样的上采样输出; 滤波器，耦合到所述上采样器以对所述上采样输出进行滤波并提供滤波输出; 相位旋转估计器，耦合到所述输入和所述滤波输出，以估计所述滤波器对所述输入样本的相位旋转; 以及耦合到所述滤波输出和所述相位旋转估计器的相位补偿器，用于补偿所述估计相位旋转的所述滤波输出。

12. 发明公开

EP0275136A2 Multichannel decimation/interpolation filter 失效
标题翻译： Mehrkanaliges dezimierendes / interpolierendes过滤器。
公开(公告)号：EP0275136A2
公开(公告)日：1988-07-20
申请号：EP88300015.0
申请日：1988-01-05
申请人： Hewlett-Packard Company
发明人： Morton, Douglas W.
IPC分类号： H03H17/04
CPC分类号： H03H17/0416 , H03H2218/06
摘要： A multichannel, digital filter capable of operation in either decimation or interpolation mode. In a preferred arrangement, the filter includes means for receiving and storing data representing the number of channels M, the number of passes N for each channel, and mode data representing decimation or interpolation mode. The multichannel filter receives a sequence of digital input values comprising time multiplexed samples from M input channels [1-8], and filters the input values from each channel to produce filtered output data for each channel. The filter includes N serially connected digital low pass filters for each channel. Low pass filter n + 1 is executed only half as often as low pass filter n, thereby providing a decimation or interpolation function, depending on the mode data. Novel means are described for sequencing the low pass filters and for storing the state variables of such filters. Means are also provided in decimation mode for outputting either a single pass N or all passes greater than or equal to N.
摘要翻译：能够以抽取或插值模式进行操作的多通道数字滤波器。在优选的布置中，滤波器包括用于接收和存储表示通道数M，每个通道的通过次数N以及表示抽取或插值模式的模式数据的数据的装置。多通道滤波器接收包括来自M个输入通道[1-8]的时分复用采样的数字输入值序列，并对来自每个通道的输入值进行滤波，以产生每个通道的滤波输出数据。该滤波器包括用于每个通道的N个串行连接的数字低通滤波器。低通滤波器n + 1仅执行低通滤波器n的一半，从而根据模式数据提供抽取或插值功能。描述了对低通滤波器进行排序和存储这种滤波器的状态变量的新颖手段。还提供了用于输出单程N或大于或等于N的全部通过的抽取模式的装置。

13. 发明授权

EP1289143B1 Variable sample rate recursive digital filter 有权
标题翻译：递归数字滤波器具有可变的采样速率
公开(公告)号：EP1289143B1
公开(公告)日：2008-12-17
申请号：EP02254993.5
申请日：2002-07-16
申请人： TEKTRONIX, INC.
发明人： Ferguson, Kevin M.
IPC分类号： H03H17/02 , H03H17/04
CPC分类号： H03H17/0294 , H03H17/0416

14. 发明授权

EP0275136B1 Multichannel decimation/interpolation filter 失效
标题翻译：多通道抽取/插值滤波器。
公开(公告)号：EP0275136B1
公开(公告)日：1995-09-06
申请号：EP88300015.0
申请日：1988-01-05
申请人： Hewlett-Packard Company
发明人： Morton, Douglas W.
IPC分类号： H03H17/04
CPC分类号： H03H17/0416 , H03H2218/06

15. 发明公开

EP0275136A3 Multichannel decimation/interpolation filter 失效
标题翻译：多通道十进制/插值滤波器
公开(公告)号：EP0275136A3
公开(公告)日：1989-12-06
申请号：EP88300015.0
申请日：1988-01-05
申请人： Hewlett-Packard Company
发明人： Morton, Douglas W.
IPC分类号： H03H17/04
CPC分类号： H03H17/0416 , H03H2218/06
摘要： A multichannel, digital filter capable of operation in either decimation or interpolation mode. In a preferred arrangement, the filter includes means for receiving and storing data representing the number of channels M, the number of passes N for each channel, and mode data representing decimation or interpolation mode. The multichannel filter receives a sequence of digital input values comprising time multiplexed samples from M input channels [1-8], and filters the input values from each channel to produce filtered output data for each channel. The filter includes N serially connected digital low pass filters for each channel. Low pass filter n + 1 is executed only half as often as low pass filter n, thereby providing a decimation or interpolation function, depending on the mode data. Novel means are described for sequencing the low pass filters and for storing the state variables of such filters. Means are also provided in decimation mode for outputting either a single pass N or all passes greater than or equal to N.

16. 发明专利

JP4159318B2 Variable sample rate recursive digital filter and filtering method 有权
公开(公告)号：JP4159318B2
公开(公告)日：2008-10-01
申请号：JP2002221582
申请日：2002-07-30
申请人：テクトロニクス・インコーポレイテッドTektronix,Inc.
发明人：ケヴィン・エム・ファーガソン
IPC分类号： H03H17/00 , H04N5/14 , H03H17/02 , H03H17/04 , H03H17/06 , H03H21/00
CPC分类号： H03H17/0294 , H03H17/0416

17. 发明专利

JPS5765918A Sampling frequency converter 失效
标题翻译：采样频率转换器
公开(公告)号：JPS5765918A
公开(公告)日：1982-04-21
申请号：JP14275080
申请日：1980-10-13
申请人： Victor Co Of Japan Ltd
发明人： KASUGA MASAO
IPC分类号： H03H17/00 , H03H17/02 , H03H17/04 , H03H17/06
CPC分类号： H03H17/0288 , H03H17/0416
摘要： PURPOSE:To make a filter small-scale, by cascading a finite impulse response digital filter and an infinite impulse response digital filter between an interpolator and a thinner. CONSTITUTION:The signal sampled by a sampling frequency f1 is inputted to an interpolator 2, and a zero point is inserted to this signal. A low-pass filter 3 is provided to take out a signal of a frequency f1/2 or below of required components from the frequency spectrum of the signal obtained as the result. In the low-pass filter 3, a finite impulse response digital filter which is a noncyclic digital filter and has the end of the pass band lower than the half of f1 and the end of the attenuation band slightly higher than the half of f1 and an infinite impulse response digital filter which is a cyclic filter and has the end of the pass band slightly lower than the half of f1 and the end of the attenuation band slightly lower then the half of f1 are cascaded. The output of the low-pass filter 3 is thinned by a sampling frequency f2.
摘要翻译：目的：通过级联有限冲击响应数字滤波器和内插器与较薄的无限脉冲响应数字滤波器，实现小尺寸滤波。构成：由采样频率f1采样的信号被输入到内插器2，零点被插入到该信号中。提供低通滤波器3，从作为结果获得的信号的频谱中取出所需分量的频率f1 / 2或更低的信号。在低通滤波器3中，作为非循环数字滤波器的有限脉冲响应数字滤波器，其通带的结束低于f1的一半，衰减频带的末端略高于f1的一半，无限脉冲响应数字滤波器，其是循环滤波器，并且通带的结束略低于f1的一半，并且衰落频带的末端略低于f1的一半。低通滤波器3的输出被采样频率f2减薄。

18. 发明申请

WO2015052598A1 MULTI-BRANCH DOWN CONVERTING FRACTIONAL RATE CHANGE FILTER 审中-公开
标题翻译：多分支下转换分数变化滤波器
公开(公告)号：WO2015052598A1
公开(公告)日：2015-04-16
申请号：PCT/IB2014/063436
申请日：2014-07-25
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
发明人： HIND, Joleen , LAPORTE, Pierre-Andre
IPC分类号： H03H17/02 , H03H17/06
CPC分类号： H04L25/0262 , H03H17/0275 , H03H17/0416 , H03H17/0621 , H03H17/0685 , H03H2220/06
摘要： A method of filtering an input sample stream having a downsampling rate is disclosed to generate an output sample stream having an upsampling rate that is less than the downsampling rate. The input sample stream is input to a rate change filter having multiple filter branches. The input sample stream is filtered at each of the multiple filter branches to output filtered sample substreams. Each of the multiple filter branches have filter coefficients corresponding to a different phase of the filter response. The filtered sample substreams are stored in a memory and the stored filtered sample substreams are combined to generate the output sample stream.
摘要翻译：公开了一种对具有下采样率的输入采样流进行滤波的方法，以产生具有小于下采样率的上采样速率的输出采样流。输入采样流被输入到具有多个滤波器分支的速率变化滤波器。输入样本流在多个滤波器分支中的每一个处进行滤波以输出滤波后的样本子流。多个滤波器分支中的每一个具有对应于滤波器响应的不同相位的滤波器系数。经滤波的样本子流存储在存储器中，并且存储的过滤样本子流被组合以产生输出样本流。

19. 发明申请

WO99016169A1 COMB FILTER 审中-公开
标题翻译：梳状滤波器
公开(公告)号：WO99016169A1
公开(公告)日：1999-04-01
申请号：PCT/DE1998/002453
申请日：1998-08-21
IPC分类号： H03H17/00 , H03H17/02 , H03H17/04
CPC分类号： H03H17/045 , H03H17/0251 , H03H17/0416
摘要： The invention relates to a comb filter consisting of integrators (I1, I2, I3) connected in series, to which a digital data flow with high scanning rate is fed in order to supply a digital data flow with a lower scanning rate. The most significant bits of the digital data flow are reset in the first and second integrators (I1, I2), whereby the resetting of the bits in the first integrator (I1) is stored in a counter (Z). The count of the counter (Z) is fed to the most significant bits of the last integrator (I3) during reset time.
摘要翻译：本发明涉及串联连接的积分器，梳状滤波器（I1，I2，I3），被供给以高采样率的数字数据流，以提供一个数字数据流的低采样率的。数字数据流的最显著位是在第一和第二积分器（I1，I2）被复位，在第一积分器（I1）中的比特的复位被存储在计数器（Z）。计数器（Z）的计数被送到复位时间的最后积分器（I3）的最显著位。

20. 发明申请

WO2004023075A1 METHODS AND APPARATUS FOR GENERATING A SINUSOIDAL MOTOR DRIVE SIGNAL FOR A MEMS GYROSCOPE 审中-公开
标题翻译：用于生成MEMS陀螺仪的SINUSOIDAL电机驱动信号的方法和装置
公开(公告)号：WO2004023075A1
公开(公告)日：2004-03-18
申请号：PCT/US2003/028358
申请日：2003-09-08
申请人： HONEYWELL INTERNATIONAL INC.
发明人： WHITE, Stanley, A.
IPC分类号： G01C19/56
CPC分类号： H03H17/0444 , G01C19/56 , H03H17/0285 , H03H17/0294 , H03H17/0416 , Y10T74/12 , Y10T74/1225 , Y10T74/1229 , Y10T74/1257 , Y10T74/1275 , Y10T74/1282
摘要： An apparatus is described which reduces a time delay and a resultant phase shift in a gyroscope motor drive signal (90). The motor drive signal originates from a numerically controlled oscillator (32) whose output (60) is sampled at a predetermined rate. The apparatus includes a first element (108) which upsamples the oscillator output signal samples and a band pass filter (100) configured to receive an output from the first element and remove spectral components from the output of the first element. The apparatus further includes a third element (102) which generates a tuning parameter, β'0 (166), for tuning of the band pass filter and a scaling multiplier (112) configured to normalize an output of the filter.
摘要翻译：描述了减少陀螺仪电机驱动信号（90）中的时间延迟和结果相移的装置。电动机驱动信号源自以数量控制的振荡器（32），其输出（60）以预定速率被采样。该装置包括对振荡器输出信号采样进行上采样的第一元件（108）和被配置为接收来自第一元件的输出并从第一元件的输出去除频谱分量的带通滤波器（100）。该装置还包括产生用于调整带通滤波器的调谐参数β'0（166）的第三元件（102）和被配置为使滤波器的输出归一化的缩放乘数器（112）。

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