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51. 发明申请

US20090045992A1 DIGITAL SAMPLE RATE CONVERSION 失效
标题翻译：数字采样率转换
公开(公告)号：US20090045992A1
公开(公告)日：2009-02-19
申请号：US11840893
申请日：2007-08-17
申请人： Thorsten Tracht , Guenther Hackl
发明人： Thorsten Tracht , Guenther Hackl
IPC分类号： H03M7/00
CPC分类号： H03H17/028 , H03H17/0275 , H03H2218/025
摘要： Embodiments of an apparatus for sample rate conversion are described. Various embodiments include an interpolator configured to interpolate a digital input data stream by using values of an interpolation phase shift control quantity to generate a digital output data stream, a computing stage configured to compute values of the interpolation phase shift control quantity, and an enabling/disabling stage configured to selectively disable the interpolator while keeping the computing stage enabled.
摘要翻译：对采样率转换装置的实施例进行说明。各种实施例包括内插器，其被配置为通过使用内插相移控制量的值内插数字输入数据流以生成数字输出数据流;计算级，被配置为计算内插相移控制量的值，以及使能/ 禁用级配置为在保持计算级使能的同时选择性地禁用内插器。

52. 发明授权

US07359469B2 Signal delaying device and method for dynamic delaying of a digitally sampled signal 失效
标题翻译：用于动态延迟数字采样信号的信号延迟装置和方法
公开(公告)号：US07359469B2
公开(公告)日：2008-04-15
申请号：US10761136
申请日：2004-01-20
申请人： Stephan Neumann , Kurt Schmidt , Markus Freidhof
发明人： Stephan Neumann , Kurt Schmidt , Markus Freidhof
IPC分类号： H04L7/00
CPC分类号： H03H17/0275 , H03H17/0027 , H03K5/13
摘要： A signal delaying device (1) for the dynamic delaying of a digitally sampled input signal comprises a memory element (2) and a series-connected interpolation element (3). According to the invention, a register (30), which can be connected to the output side of the interpolation element (3), is arranged in parallel to the memory element (2) for intermediate storage of at least one sampled value (Sin(k)) of the input signal.
摘要翻译：用于动态延迟数字采样输入信号的信号延迟装置（1）包括存储元件（2）和串联连接的插值元件（3）。根据本发明，可以连接到插值元件（3）的输出侧的寄存器（30）被布置成与存储元件（2）并联，用于中间存储至少一个采样值（S < SUB（k））的输入信号。

53. 发明申请

US20070030182A1 Time base adjustment in a data processing device 有权
标题翻译：数据处理设备中的时基调整
公开(公告)号：US20070030182A1
公开(公告)日：2007-02-08
申请号：US10575773
申请日：2004-10-11
申请人： Gerhard Runze
发明人： Gerhard Runze
IPC分类号： H03M7/00
CPC分类号： H03H17/0275 , H03H17/0219 , H03H17/0657
摘要： The present invention relates to a data processing device and adjusting method for adjusting the timing of a higher-rate stream of second data samples derived from a lowerrate stream of first data samples. A predetermined one of the first data samples is stored and first predetermined ones of the second data samples derived from the stored predetermined one of the first data samples are skipped to obtain an acceleration of the time base. Then, second predetermined ones of the second data samples following the skipped first predetermined ones of the second data samples are replaced by new second data samples derived from the stored predetermined one of the first data samples. This provides the advantage that the interpolation error caused by the skipped second data samples can be reduced while maintaining an efficient implementation of the data processing device which may be an interpolation filter.
摘要翻译：本发明涉及一种数据处理装置和调整方法，用于调节从第一数据样本的较低流导出的第二数据样本的较高速率流的定时。存储第一数据样本中的预定的一个，并且跳过从存储的预定的一个第一数据样本导出的第一数据样本中的第一预定的样本，以获得时基的加速度。然后，在跳过的第一预定的第二数据样本之后的第二数据样本中的第二预定的第二数据样本被从存储的预定的一个第一数据样本导出的新的第二数据样本替换。这提供了可以减少由跳过的第二数据样本引起的插值误差同时保持可能是内插滤波器的数据处理装置的有效实现的优点。

54. 发明申请

US20060285019A1 Digital filter configuration 有权
标题翻译：数字滤波器配置
公开(公告)号：US20060285019A1
公开(公告)日：2006-12-21
申请号：US10554530
申请日：2004-04-22
申请人： Frank Matschullat
发明人： Frank Matschullat
IPC分类号： H04N9/78
CPC分类号： H03H17/0275 , H03H17/0227 , H03H17/0621
摘要： A digital filter configuration for the filtration of a digital video signal, wherein the functions of a zoom filter, in the form of a low-pass filter, which is a polyphase filter, and of at least one peaking filter, in the form of a high-pass filter, are realized, wherein the functions of the two filters are realized in a combined filter (1-17) in an integrated circuit in a manner such that, for each phase of the zoom filter to be set, combined filter coefficients are calculated from filter coefficients stored for this phase of the zoom filter and from filter coefficients stored for the peaking filter, which combined filter coefficients are applied to the video data to be filtered in a filtration process, so that both filtration functions are executed with the combined filter coefficients in this filtration process.
摘要翻译：一种用于过滤数字视频信号的数字滤波器配置，其中以低通滤波器形式的变倍滤波器（其为多相滤波器）和至少一个峰化滤波器的功能为高通滤波器，其中两个滤波器的功能以集成电路中的组合滤波器（1-7）实现，使得对于要设置的变焦滤波器的每个相位，组合的滤波器系数由存储在变焦滤波器的该相位的滤波器系数以及从峰值滤波器存储的滤波器系数中计算，该滤波器系数被应用于在滤波过程中要滤波的视频数据，以便两者的过滤功能被执行在这个过滤过程中组合滤波器系数。

55. 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）。

56. 发明申请

US20050262176A1 Polyphase filter with optimized silicon area 失效
标题翻译：具有优化硅面积的多相滤波器
公开(公告)号：US20050262176A1
公开(公告)日：2005-11-24
申请号：US10852282
申请日：2004-05-24
申请人： Wenkwei Lou
发明人： Wenkwei Lou
IPC分类号： G06F17/10 , H03H17/02 , H03H17/06
CPC分类号： H03H17/0275 , H03H17/0225 , H03H17/0621 , H03H17/0664
摘要： A polyphase filter including M taps, each of the M taps including a filter coefficient. The filter also includes a multiplier-accumulator (MAC) shared by the M taps, a plurality of multiplexors for sequentially selecting a subset of the plurality of taps, and a scheduler for controlling the MAC to perform arithmetic operations on respective filter coefficients of the selected subset of the plurality of taps.
摘要翻译：一种包括M个抽头的多相滤波器，每个M抽头包括滤波器系数。滤波器还包括由M个抽头共享的乘法器累加器（MAC），用于顺序选择多个抽头的子集的多个多路复用器，以及用于控制MAC对所选择的各个滤波器系数执行算术运算的调度器多个抽头的子集。

57. 发明申请

US20030102991A1 Digital sample frequency converter 审中-公开
标题翻译：数字采样变频器
公开(公告)号：US20030102991A1
公开(公告)日：2003-06-05
申请号：US10294531
申请日：2002-11-14
发明人： Laurent Pasquier
IPC分类号： H03M007/00
CPC分类号： H03H17/0275 , H03H17/028 , H03H2218/08
摘要： The present invention relates to a converter for converting a digital input signal (1) into a digital output signal (3) using a set of filtering coefficients. The converter comprises filtering means effecting a filtering function and producing the set of filtering coefficients from phase differences (2) between a sample of the digital output signal and samples of the digital input signal, the filtering function being defined by a set of polynomials. The filtering means also comprise a memory (52) for storing coefficients of the polynomials, and means (53) of calculating the set of filtering coefficients from coefficients of the polynomials and phase differences. Such a converter allows a large number of format conversions, while having limited memory resources.
摘要翻译：本发明涉及一种用于使用一组滤波系数将数字输入信号（1）转换为数字输出信号（3）的转换器。转换器包括实现滤波功能的滤波装置，并且从数字输出信号的采样与数字输入信号的采样之间的相位差（2）产生滤波系数集合，滤波函数由一组多项式定义。滤波装置还包括用于存储多项式的系数的存储器（52），以及从多项式和相位差的系数计算滤波系数集合的装置（53）。这样的转换器允许大量的格式转换，同时具有有限的存储器资源。

58. 发明申请

US20020184277A1 Resampling system and apparatus 有权
标题翻译：重采样系统和设备
公开(公告)号：US20020184277A1
公开(公告)日：2002-12-05
申请号：US09847920
申请日：2001-05-02
发明人： Ke-Chiang Chu
IPC分类号： G06F017/17 , H03M007/00
CPC分类号： H03H17/0275 , G11B20/10527 , H03H17/0621 , H03H17/0628
摘要： A filter system and method are provided that is particular applicable to the resampling of a signal, such as a digital audio signal. The filtering method in accordance with the invention may use a nearest neighbor strategy to reduce the complexity and cost of the filter without reducing the precision of the resampling.
摘要翻译：提供了一种特别适用于诸如数字音频信号的信号的重采样的滤波器系统和方法。根据本发明的滤波方法可以使用最近邻策略来降低滤波器的复杂性和成本，而不降低重采样的精度。

59. 发明申请

US20020038324A1 SINC FILTER USING TWISTING SYMMETRY 有权
标题翻译： SINC过滤器使用TWISTING SYMMETRY
公开(公告)号：US20020038324A1
公开(公告)日：2002-03-28
申请号：US09153860
申请日：1998-09-16
发明人： JOEL PAGE , EDWIN DE ANGEL , WAI LAING LEE , LEI WANG , HONG ZHENG , CHUNG-KAI CHOW
IPC分类号： G06F017/10 , G06F017/17
CPC分类号： H03H17/0288 , H03H17/0225 , H03H17/0275 , H03H17/0282 , H03H17/06 , H03H17/0664
摘要： A sinc filter is implemented by partitioning 1 bit wide incoming data into multibit words. The multibit words are multiplied by respective coefficient sets. Some multibit words are twisted by inverting the bit order and the multiplied using the same coefficient sets used for untwisted words. Multiplications are implemented using either look up tables or logic and the filter is implemented using only shifts and additions. The sinc filter is particularly useful applications in the field of data acquisition and particularly in the area of seismic sensing.
摘要翻译：通过将1位宽的输入数据分成多位字来实现sinc过滤器。多位字乘以相应的系数组。通过使用与未扭曲字相同的系数组来反转位顺序并使乘法相乘来扭转某些多字。使用查找表或逻辑实现乘法，并且仅使用移位和添加来实现过滤器。 sinc滤波器在数据采集领域尤其是在地震检测领域尤其有用。

60. 发明授权

US6125155A Broad-band digital filtering method and a filter implementing the method 失效
标题翻译：宽带数字滤波方法和实现该方法的滤波器
公开(公告)号：US6125155A
公开(公告)日：2000-09-26
申请号：US733517
申请日：1996-10-18
申请人： Chantal Lesthievent , Patrick Oudart , Claudine Flament , Eric Belis
发明人： Chantal Lesthievent , Patrick Oudart , Claudine Flament , Eric Belis
IPC分类号： H03H17/00 , G01S13/53 , G01S13/90 , H03H17/02 , H03H17/06 , H04B1/10
CPC分类号： H03H17/0275 , H03H17/0685
摘要： A digital filter method comprising the following steps: input signal data x(n) is sampled at sampling frequency Fe and shared between and stored in Q memories of shift register of FIFO type associated with the Q branches of the filter. The filter coefficients g.sub.m (p) are stored in at least one other memory referred to as a "coefficient" memory. Interpolation by L followed by decimation by M makes it possible to reduce the working frequency of the filter to the output frequency Fs=(L/M)Fe with L/M
摘要翻译：一种数字滤波方法，包括以下步骤：以采样频率Fe采样输入信号数据x（n），并与滤波器的Q分支相关的FIFO类型的移位寄存器共享并存储在Q存储器中。滤波器系数gm（p）被存储在被称为“系数”存储器的至少一个其他存储器中。用L进行插值，然后通过M抽取，可以将滤波器的工作频率降低到L / M <1的输出频率Fs =（L / M）Fe。数据样本x（n）以速率Fs乘以系数gm（p）。根据本发明，每个分支中的数据样本x（n）保持存在于多个乘法APPROX Fe / Q，并且系数在每个分支中通过每个时钟周期的系数存储器中的地址置换来旋转。本发明提出了实现该方法的各种装置。在雷达和电信领域的应用。

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