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1. 发明授权

US08537944B2 Apparatus with a plurality of filters 有权
标题翻译：具有多个过滤器的装置
公开(公告)号：US08537944B2
公开(公告)日：2013-09-17
申请号：US11937606
申请日：2007-11-09
申请人： Andreas Menkhoff
发明人： Andreas Menkhoff
IPC分类号： H04B1/10
CPC分类号： H04B1/0483 , H03H17/0276 , H03H17/0294 , H03H2017/0295
摘要： An apparatus comprises a filter unit comprising a plurality of different filters each configured to filter a first signal when selected. The apparatus may further comprise a control unit configured to select one of the plurality of filters depending on a strength of the first signal. Related methods may also be performed.
摘要翻译：一种装置包括滤波器单元，其包括多个不同的滤波器，每个滤波器被配置为当选择时对第一信号进行滤波。该装置还可以包括控制单元，其被配置为根据第一信号的强度来选择多个滤波器中的一个。还可以执行相关方法。

2. 发明授权

US5621675A Digital decimation and compensation filter system 失效
标题翻译：数字抽取和补偿滤波系统
公开(公告)号：US5621675A
公开(公告)日：1997-04-15
申请号：US333403
申请日：1994-11-02
申请人： Alfredo R. Linz , Glen Brown
发明人： Alfredo R. Linz , Glen Brown
IPC分类号： G06F7/02 , H03H17/02 , H03H17/06 , H03K23/68 , G06F17/10
CPC分类号： H03H17/0664 , G06F7/026 , H03H17/0276 , H03H17/0288 , H03H17/0671 , H03K23/68
摘要： This invention is for a multi-stage digital decimation filter, which includes a sinc.sup.6 filter, a half-band linear phase FIR filter and a symmetric, linear phase, FIR filter and a digital compensation filter. The multi-stage decimation filter down-samples the output of a sigma-delta modulator by a factor of about 64. The compensation filter provides compensation for rolloff introduced by the multi-stage decimation filter.
摘要翻译：本发明涉及一种多级数字抽取滤波器，它包括一个sinc6滤波器，一个半波段线性相位FIR滤波器和一个对称线性相位FIR滤波器和一个数字补偿滤波器。多级抽取滤波器将Σ-Δ调制器的输出下采样约64倍。补偿滤波器为多级抽取滤波器引入的滚降提供补偿。

3. 发明授权

US07577696B2 Multirate filter as well as display system and mobile telephone comprising said multirate filter 有权
标题翻译：多速率滤波器以及包括所述多速率滤波器的显示系统和移动电话
公开(公告)号：US07577696B2
公开(公告)日：2009-08-18
申请号：US10537066
申请日：2003-12-04
申请人： Alphons Antonius Maria Lambertus Bruekers , Antonius Adrianus Cornelis Maria Kalker
发明人： Alphons Antonius Maria Lambertus Bruekers , Antonius Adrianus Cornelis Maria Kalker
IPC分类号： G06F17/10
CPC分类号： H03H17/0275 , H03H17/0276 , H03H17/0685
摘要： A multirate filter according to the invention comprises, a) an input unit (10) for receiving an input signal (Sin) and for providing a plurality of intermediate signals (IS1, IS2) in response to said input signal, b) a filter unit (20) coupled to the input unit (10), and c) an output unit (30) coupled to the filter unit (20), for generating an output signal (Sout). The filter unit (20) comprises at least a first and a second filter module (21, 22), with a transfer function H0(z) and a transfer function H1(z) respectively, which are mutually related according to the relations H0(z)=c0(HB(z)+Mα,ψHB(z)) and, H1(z)=c1(HB(z)+Mα,ψHB(z)) wherein, Mα,ψ(HB(z))=αz−2ψHB*(z−1), and wherein Formula (I), being the z-transform of hb[m]. The multirate filter comprises a combination unit (11) coupled to said filter modules (21, 22) for generating a first combination signal (Ssum) and a second combination signal (Sdiff).
摘要翻译：根据本发明的多速率滤波器包括：a）用于接收输入信号（Sin）并响应于所述输入信号提供多个中间信号（IS1，IS2）的输入单元（10），b）滤波器单元（20），以及c）耦合到所述滤波器单元（20）的输出单元（30），用于产生输出信号（Sout）。滤波器单元（20）至少包括具有传递函数H0（z）和传递函数H1（z）的第一和第二滤波器模块（21,22），它们分别根据关系H0（（HB（z）+ Malpha，psiHB（z））和H1（z）= c1（HB（z）+ Malpha，psiHB（z））其中，Malpha，psi（HB（z））= alphaz-2psiHB *（z-1），其中式（I）是hb [m]的z变换。多速率滤波器包括耦合到所述滤波器模块（21,22）的组合单元（11），用于产生第一组合信号（Ssum）和第二组合信号（Sdiff）。

4. 发明申请

US20080043889A1 Exponentiated Polyphase Digital Filter 有权
标题翻译：指数多相数字滤波器
公开(公告)号：US20080043889A1
公开(公告)日：2008-02-21
申请号：US11465605
申请日：2006-08-18
申请人： Andreas Menkhoff
发明人： Andreas Menkhoff
IPC分类号： H04B1/10
CPC分类号： H03H17/0277 , H03H17/0275 , H03H17/0276
摘要： The structure of a digital filter is provided through exponentiation of a polyphase digital filter. This exponentiation may be accomplished by determining an expression for the polyphase digital filter in terms of its polyphase components, and raising the expression for the polyphase digital filter to a power. The polyphase components are then arranged in a structure based on this exponentiated expression.
摘要翻译：通过多相数字滤波器的取幂来提供数字滤波器的结构。该取幂可以通过根据多相数据分量确定多相数字滤波器的表达式，并将多相数字滤波器的表达式提高到功率来实现。然后将多相分量以基于该取幂表达式的结构排列。

5. 发明授权

US6000834A Audio sampling rate conversion filter 失效
标题翻译：音频采样率转换滤波器
公开(公告)号：US6000834A
公开(公告)日：1999-12-14
申请号：US907314
申请日：1997-08-06
申请人： Tieying Duan
发明人： Tieying Duan
IPC分类号： H03H17/06 , G06F17/17
CPC分类号： H03H17/0276 , H03H17/0657 , H03H17/0664
摘要： A 1:2 or 2:1 audio sampling rate conversion filter converts audio signals from a first sampled rate to a second sampled rate has a multi-coefficient subfilter for receiving a plurality of audio signal samples from buffer memory obtained by sampling at the first sampled rate, and for performing convolution on the plurality of audio signal samples to generate a multi-coefficient based convolution product. In combination with the multicoefficient subfilter, the audio sampling rate conversion filter has a single coefficient subfilter for only receiving a middle sample from the buffer memory and for performing convolution on the middle sample using a single middle coefficient to generate a single middle coefficient based convolution product. The multi-coefficient based convolution product and the single middle coefficient based convolution product are used to convert the audio signal samples obtained at the first sampled rate to audio signal samples corresponding to signal samples obtained as if sampled at the second sampled rate. A commutator in combination with the multicoefficient and single coefficient subfilters is used to achieve a reduction in the number of multiplications required by the filter to obtain suitable rate converted signal samples.
摘要翻译：将音频信号从第一采样率转换为第二采样率的1：2或2：1音频采样率转换滤波器具有多系数子滤波器，用于从通过采样的第一采样获得的缓冲存储器中接收多个音频信号采样速率，并且用于在多个音频信号样本上执行卷积以产生基于多系数的卷积乘积。与多效率子滤波器组合，音频采样率转换滤波器具有仅用于从缓冲存储器接收中间采样的单个系数子滤波器，并且使用单个中间系数对中间采样进行卷积以产生单个中系数的卷积积。使用基于多系数的卷积积和基于单个中系数的卷积乘积将在第一采样速率获得的音频信号样本转换为对应于以第二采样率采样获得的信号样本的音频信号样本。使用与多效率和单系数子滤波器组合的换向器来实现滤波器所需的乘法次数的减少以获得合适的速率转换信号样本。

6. 发明申请

US20170272035A1 DIGITAL FREQUENCY CONVERTER AND METHOD OF PROCESSING IN A DIGITAL FREQUENCY CONVERTER 审中-公开
公开(公告)号：US20170272035A1
公开(公告)日：2017-09-21
申请号：US15329883
申请日：2015-07-30
申请人： THALES
发明人： François JOLEC , Anthony DOUMENJOU
IPC分类号： H03D7/16
CPC分类号： H03D7/165 , H03D2200/0062 , H03H17/0276 , H03H17/0664 , H03H2017/0247
摘要： A frequency converter comprising a frequency transposition block for samples (11Q_1, 11Q_2), a filtering block (12Q_1, 12Q_2), the filtered samples y(n) verifying y(n)=c(0)·x(n)+c(1)·x(n−1)+c(2)·x(n−2)+ . . . +c(p−1)·x(n−p+1)+c(p)·x(n−p)+c(p−1)·x(n−p−1)+ . . . + . . . +c(1)·x(n−2·p+1)+c(0)·x(n−2·p), wherein x( ) are the transposed samples and c(0), . . . c(p) are the real coefficients of the filter; and being adapted for, during a cycle for determining the value of the filtered sample y(n): calculating the first terms c(0)·x(n), c(1)·x(n−1), c(2)·x(n−2), . . . , c(p)·x(n−p) by multiplying the respective coefficients and transposed samples, and storing in memory said first calculated terms; reading the second terms c(p−1)·x(n−p−1), . . . , c(1)·x(n−2·p+1), c(0)·x(n−2·p), calculated and stored in memory during previous cycles for determining the value of filtered samples y(n−m); and determining y(n) by summation of the first and second terms.

7. 发明申请

US20060222083A1 Digital filter with spatial scalability 审中-公开
标题翻译：具有空间可扩展性的数字滤波器
公开(公告)号：US20060222083A1
公开(公告)日：2006-10-05
申请号：US10539364
申请日：2003-11-18
申请人： Reinier Klein Gunnewiek
发明人： Reinier Klein Gunnewiek
IPC分类号： H04B1/66
CPC分类号： H03H17/0276 , H03H17/0657 , H04N19/80 , H04N19/85
摘要： A method, filter and a video coder filtering a signal is described. The filter (92) comprises a first set of multipliers (102, 104, 106) filtering samples of the signal with a first phase of filter coefficients (C2, C4, C6), first summing units (108, 110) adding together the first filtered samples for forming a first sum signal, a second set of multipliers (114, 116, 118, 120) filtering the samples with a second phase of filter coefficients (C1, C3, C5, C7), second summing units (122, 124, 126) adding together the second filtered samples for forming a second sum signal and normalizers (112, 128) dividing the first sum signal with the sum of the first phase coefficients and the second sum signal with the sum of the second phase coefficients for providing first and second output signals. This allows optimisation of the coefficients without making the sums of the coefficient sets equal.
摘要翻译：描述了对信号进行滤波的方法，滤波器和视频编码器。滤波器（92）包括用滤波器系数（C 2，C 4，C 6）的第一相位滤波信号的采样的第一乘法器组（102,104,106），第一加法单元（108,110）一起形成第一和信号的第一滤波样本，用滤波器系数（C 1，C 3，C 5，C 7）的第二相滤波样本的第二组乘法器（114,116,118,120）将第二滤波样本相加在一起以形成第二和信号的第二加法单元（122,124,126）和将第一和信号与第一相位系数和第二和信号之和除以总和的归一化器（112,128）用于提供第一和第二输出信号的第二相位系数。这允许优化系数而不使系数组合的和相等。

8. 发明申请

US20060056553A1 Multirate filter as well as display system and mobile telephone comprising said multirate filter 有权
标题翻译：多速率滤波器以及包括所述多速率滤波器的显示系统和移动电话
公开(公告)号：US20060056553A1
公开(公告)日：2006-03-16
申请号：US10537066
申请日：2003-12-04
申请人： Alphons Antonius Bruekers , Antoninus Adrianus Kalker
发明人： Alphons Antonius Bruekers , Antoninus Adrianus Kalker
IPC分类号： H04B1/10
CPC分类号： H03H17/0275 , H03H17/0276 , H03H17/0685
摘要： A multirate filter according to the invention comprises, a) an input unit (10) for receiving an input signal (Sin) and for providing a plurality of intermediate signals (IS1, IS2) in response to said input signal, b) a filter unit (20) coupled to the input unit (10), and c) an output unit (30) coupled to the filter unit (20), for generating an output signal (Sout). The filter unit (20) comprises at least a first and a second filter module (21, 22), with a transfer function H0(z) and a transfer function H1(z) respectively, which are mutually related according to the relations H0(z)=c0(HB(z)+Mα,ψHB(z)) and, H1(z)=c1(HB(z)+Mα,ψHB(z)) wherein, Mα,ψ(HB(z))=αz−2ψHB*(z−1), and wherein Formula (I), being the z-transform of hb[m]. The multirate filter comprises a combination unit (11) coupled to said filter modules (21, 22) for generating a first combination signal (Ssum) and a second combination signal (Sdiff).
摘要翻译：根据本发明的多速率滤波器包括：a）用于接收输入信号（Sin）并响应于所述输入信号提供多个中间信号（IS 1，IS 2）的输入单元（10），b）a 滤波器单元（20），其耦合到所述输入单元（10），以及c）耦合到所述滤波器单元（20）的输出单元（30），用于产生输出信号（Sout）。滤波器单元（20）至少包括具有传递函数H 0（z）和传递函数H 1（1）的至少第一和第二滤波器模块（21,22）（z）+（z）+（z）+（z）+（z））相互相关，（z））和H 1（z）= c 1（H（Z））（z）+ Mα（ψ）B（Z））其中，Mα，ψ（ζ） H z（z））= alphaz 2psi H B *（z-1〜1），其中式（I），作为h [m]的z变换。多速率滤波器包括耦合到所述滤波器模块（21,22）的组合单元（11），用于产生第一组合信号（Ssum）和第二组合信号（Sdiff）。

9. 发明授权

US6101517A Circuit and method for the multiple use of a digital transversal filter 失效
标题翻译：用于多次使用数字横向滤波器的电路和方法
公开(公告)号：US6101517A
公开(公告)日：2000-08-08
申请号：US68431
申请日：1998-05-08
申请人： Stefan Meier
发明人： Stefan Meier
IPC分类号： H03H17/02 , H03H17/06 , G06F17/10
CPC分类号： H03H17/0227 , H03H17/0275 , H03H17/0276 , H03H17/0621 , H03H17/0657 , H03H17/0664 , H03H2218/04 , H03H2218/08
摘要： Circuit and method for the multiple use of a digital transversal filter wherein a coefficient block of n coefficients, there is, in each case, provision of 2 multiplier units which are subject to multiple use if the internal clock of the filter is greater, than an order of magnitude, than an external clock which is required by the filter.
摘要翻译： PCT No.PCT / DE96 / 01883 Sec。 371日期1998年5月8日 102（e）日期1998年5月8日PCT提交1996年10月1日PCT公布。出版物WO97 / 17758 日期1997年5月15日用于多次使用数字横向滤波器的电路和方法，其中n个系数的系数块在每种情况下都存在如果滤波器的内部时钟为多个则需要多次使用的2个乘法器单元比过滤器要求的外部时钟大一个数量级。

10. 发明授权

US4893264A Digital decimation filter 失效
标题翻译：数字抽取滤波器
公开(公告)号：US4893264A
公开(公告)日：1990-01-09
申请号：US224018
申请日：1988-07-25
申请人： Tobias Noll , Stefan Meier
发明人： Tobias Noll , Stefan Meier
IPC分类号： H03H17/00 , H03H17/02 , H03H17/06
CPC分类号： H03H17/0225 , H03H17/0276 , H03H17/0664 , H03H2017/0692
摘要： A digital decimation filter which includes a multiplexer which receives signal values x.sub.i at a sampling rate of 1/T and where output signals which have half the sampling rate are supplied to two outputs. Separate bit associated circuits BP1 and BP2 are connected to the outputs for each significant figure of the p-place binary filter coefficients c6 through c1 and each of the bit associated circuits include partial products stages Mc6.sub.0 . . . Mc1.sub.0, Mc6.sub.1 . . . Mc1.sub.1 for all of the filter coefficient bits and the bit associated circuits also contain adder-register iterative circuits including delay elements and the output of the iterative circuit of the most significant bit plane BP2 is the output of the filter.
摘要翻译：数字抽取滤波器，其包括以1 / T的采样率接收信号值xi并且具有一半采样率的输出信号被提供给两个输出的多路复用器。分离位相关电路BP1和BP2连接到p位二进制滤波器系数c6至c1的每个有效图的输出，并且每个位相关电路包括部分乘积级Mc60。。。 Mc10，Mc61。。。所有滤波器系数位和位相关电路的Mc11都包含加法寄存器迭代电路，包括延迟元件，最高有效位平面BP2的迭代电路的输出是滤波器的输出。

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