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21. 发明申请

WO0156167A3 A MULTIPLIERLESS INTERPOLATOR FOR A DELTA-SIGMA DIGITAL TO ANALOG CONVERTER 审中-公开
标题翻译：用于三角形数字转换器的多功能插补器
公开(公告)号：WO0156167A3
公开(公告)日：2002-03-14
申请号：PCT/US0102744
申请日：2001-01-26
申请人： SONIC INNOVATIONS INC
发明人： WILSON GERALD , GREEN ROBERT S
IPC分类号： H03H17/02 , H03H17/04 , H03H17/06
CPC分类号： H03H17/0225 , H03H17/0279 , H03H17/0285 , H03H17/0416 , H03H17/0444
摘要： A simplified algorithm for digital signal interpolation and a novel architecture to implement the algorithm in an integrated circuit ("IC") with significant space constraints are presented. According to the embodiments of the present invention, the interpolator is divided into two parts. The first part of the interpolator increases the sample rate by a factor of two and smoothes the signal using a half-band Infinite Impulse Response ("IIR") filter. The second part of the interpolator increases the sample rate of the signal by a factor of thirty-two using a zero-order-hold ("ZOH") circuit. In one embodiment, the half-band IIR filter is implemented using an all-pass lattice structure to minimize quantization effects. The lattice coefficients are chosen such that the structure can achieve all filter design requirements, yet is capable of being implemented with a small number of shifters and adders, and no multipliers.
摘要翻译：提出了一种用于数字信号插值的简化算法和一种在具有显着空间约束的集成电路（“IC”）中实现该算法的新型架构。根据本发明的实施例，内插器被分成两部分。插值器的第一部分将采样率提高一倍，并使用半带无限脉冲响应（“IIR”）滤波器对信号进行平滑。内插器的第二部分使用零级保持（“ZOH”）电路将信号的采样率增加了三十二倍。在一个实施例中，使用全通格格结构来实现半带IIR滤波器以使量化效应最小化。选择晶格系数使得该结构可以实现所有滤波器设计要求，但是能够用少量的移位器和加法器实现，并且不需要乘法器。

22. 发明公开

EP2448118A1 Method of making a linear periodically time varying system shift-invariant 审中-公开
标题翻译： Verfahren zur Erstellung einer Verschiebungsinvarianten eines linearen，periodisch zeitvariablen系统
公开(公告)号：EP2448118A1
公开(公告)日：2012-05-02
申请号：EP10306182.6
申请日：2010-10-27
申请人： ST-Ericsson SA
发明人： Tassart, Stephan
IPC分类号： H03H17/04 , H03H17/06
CPC分类号： H04L1/0002 , H03H17/0416 , H03H17/0455 , H03H17/0621 , H03H17/0685
摘要： There is described a method of making a linear periodically time varying system shift-invariant comprising the following steps implemented for each input signal the sample rate of which has to be converted:
- generating a set of polyphase components based on the input signal,
- feeding the generated set of polyphase components to the system, and
- generating an output signal by performing interleaving, shifting and addition on signals output by the system corresponding to the generated set of polyphase components processed by the system.
摘要翻译：描述了一种制造线性周期性时变系统偏移不变量的方法，包括为每个输入信号实施的采样速率必须被转换的以下步骤： - 基于输入信号生成一组多相分量; - 馈送生成的多相分量集合到系统，以及 - 通过对由系统处理的生成的多相分量组合对应的系统输出的信号进行交织，移位和相加来产生输出信号。

23. 发明授权

EP1821407B8 OFDM channel estimation systems 有权转让
标题翻译：系统，用于OFDM信道估计
公开(公告)号：EP1821407B8
公开(公告)日：2009-08-26
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

24. 发明公开

EP1535028A1 METHODS AND APPARATUS FOR GENERATING A SINUSOIDAL MOTOR DRIVE SIGNAL FOR A MEMS GYROSCOPE 有权
标题翻译： METHOD AND APPARATUS FOR用于在微机电系统陀螺仪MOTOR生成正弦控制信号
公开(公告)号：EP1535028A1
公开(公告)日：2005-06-01
申请号：EP03770306.3
申请日：2003-09-08
申请人： Honeywell International Inc.
发明人： WHITE, Stanley, A.
IPC分类号： G01C19/56 , H03H17/04 , H03H21/00 , G06T3/40
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.

25. 发明公开

EP3055928A1 MULTI-BRANCH DOWN CONVERTING FRACTIONAL RATE CHANGE FILTER 审中-公开
标题翻译：美孚VERZWEIGTERABWÄRTSUMWANDLUNGSFILTERMIT NICHTGANZZAHLIGERRATENÄNDERUNG
公开(公告)号：EP3055928A1
公开(公告)日：2016-08-17
申请号：EP14781669.8
申请日：2014-07-25
申请人： Telefonaktiebolaget LM 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。将经过滤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。

26. 发明公开

EP1548940A1 Sample rate converter 审中-公开
标题翻译： Abtastratenumsetzer
公开(公告)号：EP1548940A1
公开(公告)日：2005-06-29
申请号：EP03029325.2
申请日：2003-12-18
申请人： Harman Becker Automotive Systems GmbH
发明人： Azizi, Seyed Ali Dr.
IPC分类号： H03H17/04
CPC分类号： H03H17/0416 , H03H17/0288
摘要： A sample rate converter for converting a digital input signal having a first sample rate into a digital output signal having a second sample rate, wherein the second sample rate is different from the first sample rate; said sample rate converter comprises a digital interpolation filter receiving the input signal and comprising a digital zero-phase filter, and a digital polynom interpolator connected to the interpolation filter and providing the output signal.
摘要翻译：一种用于将具有第一采样率的数字输入信号转换为具有第二采样率的数字输出信号的采样率转换器，其中第二采样率不同于第一采样率; 所述采样率转换器包括接收输入信号并包括数字零相位滤波器的数字内插滤波器和连接到内插滤波器并提供输出信号的数字多项式内插器。

27. 发明授权

EP0940009B1 KAMMFILTER 有权
标题翻译：梳状滤波器
公开(公告)号：EP0940009B1
公开(公告)日：2004-02-18
申请号：EP98951189.4
申请日：1998-08-21
申请人： Infineon Technologies AG
发明人： DRAXELMAYR, Dieter
IPC分类号： H03H17/04 , H03H17/02
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.

28. 发明公开

EP1184980A2 Digital receiver 审中-公开
标题翻译： DigitalerEmpfänger
公开(公告)号：EP1184980A2
公开(公告)日：2002-03-06
申请号：EP01306378.9
申请日：2001-07-25
申请人： Pioneer Corporation
发明人： Ohashi, Toru
IPC分类号： H03H17/04
CPC分类号： H03H17/0416
摘要： Such a digital receiver comprises a digital band-pass filter 16 for performing digital filtering on digital data D IF of the intermediate frequency, the digital data D IF frequency-converted by a frequency converter and undergone analog-to-digital conversion, at a first sampling rate equal to an exponentiation multiple of 2 of the intermediate frequency, and an interpolation filter 17 for performing digital filtering on digital data D BF output from the digital band-pass filter 16 at a second sampling rate equal to an exponentiation multiple of 2 of the intermediate frequency and outputting the resulting data to a detection circuit 18.
摘要翻译：这种数字接收机包括数字带通滤波器16，用于对中频数字数据DIF执行数字滤波，数字数据DIF由频率转换器频率转换并经过模数转换，以第一采样率等于中频2的乘方倍数，以及内插滤波器17，用于对数字带通滤波器16输出的数字数据DBF进行数字滤波，第二采样率等于中频2的乘方倍数并将得到的数据输出到检测电路18。

29. 发明公开

EP1079758A1 FORWARD-BACKWARD CHANNEL INTERPOLATOR 审中-公开
标题翻译：插值成正向反向信道
公开(公告)号：EP1079758A1
公开(公告)日：2001-03-07
申请号：EP99925803.1
申请日：1999-05-25
申请人： GLENAYRE ELECTRONICS, INC.
发明人： REY, Claudio, G. , KATIC, Ognjen, B.
IPC分类号： A61B19/00 , H03M13/00 , H03H7/30
CPC分类号： H03H17/0461 , H03H17/0288 , H03H17/0416 , H04L25/0232 , H04L2025/0349
摘要： An interpolator (40) having a linear response has a first stage implemented with an IIR filter (42) to achieve the narrow transition bandwidth with relatively few filter coefficients. Zero-stuffing and filtering are used to achieve the interpolation. A forward-backward filtering methodology is then used to achieve a linear phase response for the IIR filter (42). The input sequence to be interpolated is zero stuffed and passed through the IIR filter (42) a first time. Then the time order of the resulting sequence is reversed and then passed through the IIR filter (42) a second time. After that, the resulting output sequence is reversed again. Guard blocks are added to both ends of the input sequence and then a block of zeros is appended to the zero-stuffed guarded input sequence. The appended zero block causes the startup and ending transient effect of the IIR filter's step response (42) to be equal at both ends, which tends to improve the accuracy of the interpolation. Subsequent zero-stuffing and filtering by the FIR filter (44) stages are used to further increase the interpolation. A linear interpolator may also be included after the FIR filter (44) stages.

30. 发明专利

JP4240547B2 Comb filter 有权
公开(公告)号：JP4240547B2
公开(公告)日：2009-03-18
申请号：JP51841099
申请日：1998-08-21
申请人：シーメンスアクチエンゲゼルシヤフト
发明人：ドラクセルマイルディーター
IPC分类号： H03H17/00 , H03H17/02 , H03H17/04
CPC分类号： H03H17/045 , H03H17/0251 , H03H17/0416

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