公开(公告)号：US20080046494A1

公开(公告)日：2008-02-21

申请号：US11895538

申请日：2007-08-24

Applicant: Thomas Curtis ,  Steven Sidman

Inventor： Thomas Curtis ,  Steven Sidman

IPC: G06F17/10

CPC classification number: H03H17/0201

Abstract: Digital signal-processing structure and methodology which feature a time-slice-based digital fabricating engine, and software operating structure operatively associated with that engine structured to operate the engine in a time-slice-based fabrication mode wherein the engine, in a time-differentiated and instantiating manner, functions to fabricate a time-succession of individual, composite wave digital filters. Each of these filters takes the form of (1) a concatenated assembly including one to a plurality of upstream, early-stage, decimate-by-two, signal-processing agencies connected in a cascade series arrangement, with each such agency possessing a first transfer function having a first transition bandwidth, and (2) a single, downstream, later-stage, decimate-by-two, signal-processing agency which possesses a second transfer function having a transition bandwidth which is less than the mentioned first transition bandwidth.

公开(公告)号：US20060200035A1

公开(公告)日：2006-09-07

申请号：US11360223

申请日：2006-02-23

Applicant: Carlos Ricci ,  Vladimir Kovtun

Inventor： Carlos Ricci ,  Vladimir Kovtun

IPC: A61B5/04

CPC classification number: H03H17/0201 ,  A61B5/0006 ,  A61B5/04014 ,  A61B5/0432 ,  A61B5/044 ,  G06K9/00523

Abstract: The present invention provides a system and method for representing quasi-periodic (“qp”) waveforms comprising, representing a plurality of limited decompositions of the qp waveform, wherein each decomposition includes a first and second amplitude value and at least one time value. In some embodiments, each of the decompositions is phase adjusted such that the arithmetic sum of the plurality of limited decompositions reconstructs the qp waveform. These decompositions are stored into a data structure having a plurality of attributes. Optionally, these attributes are used to reconstruct the qp waveform, or patterns or features of the qp wave can be determined by using various pattern-recognition techniques. Some embodiments provide a system that uses software, embedded hardware or firmware to carry out the above-described method. Some embodiments use a computer-readable medium to store the data structure and/or instructions to execute the method.

Abstract translation: 本发明提供一种用于表示准周期（“qp”）波形的系统和方法，包括表示qp波形的多个有限分解，其中每个分解包括第一和第二振幅值和至少一个时间值。 在一些实施例中，每个分解被相位调整，使得多个有限分解的算术和重建qp波形。 这些分解被存储到具有多个属性的数据结构中。 可选地，这些属性用于重建qp波形，或者可以通过使用各种模式识别技术来确定qp波的图案或特征。 一些实施例提供使用软件，嵌入式硬件或固件来执行上述方法的系统。 一些实施例使用计算机可读介质来存储用于执行该方法的数据结构和/或指令。

公开(公告)号：US6041338A

公开(公告)日：2000-03-21

申请号：US35016

申请日：1998-03-05

Applicant: Dong-Hwan Han

Inventor： Dong-Hwan Han

IPC: H04S1/00 ,  H03H17/02 ,  H03H17/04 ,  G06F17/10 ,  G06F17/17

CPC classification number: H03H17/0201 ,  H03H17/0416

Abstract: A data interpolating filter is disclosed, in which a wave digital filter is used for processing two-channel data with one data path. A sample and hold part samples and holds data, and selectively provides the sampled and held data for at least two different channels. An adapter filters the sampled and held data from the sample and hold part to produce interpolated data. The adapter filters the sampled and held data using a selectable one of at least two different filter coefficients, and a filtering signal delaying part delays the interpolated data in response to selecting signals.

Abstract translation: 公开了一种数据内插滤波器，其中使用波数字滤波器来处理具有一条数据路径的双通道数据。 采样和保持部分采样和保存数据，并且选择性地提供用于至少两个不同信道的采样和保持的数据。 适配器对采样和保持的数据从采样和保持部分进行过滤，以产生内插数据。 适配器使用至少两个不同的滤波器系数中的可选择的一个来对采样和保持的数据进行滤波，并且滤波信号延迟部分响应于选择信号来延迟内插数据。

公开(公告)号：US5200914A

公开(公告)日：1993-04-06

申请号：US679324

申请日：1991-04-02

Applicant: John V. McCanny ,  Rajinder Jit Singh ,  Roger F. Woods

Inventor： John V. McCanny ,  Rajinder Jit Singh ,  Roger F. Woods

IPC: H03H17/02

CPC classification number: H03H17/0201

Abstract: A wave digital filter implements a pipelining strategy to significantly increase the processing speed of circuits. The implementation allows high frequency digital signals to be processed at higher speeds than were previously possible. The implementation overcomes potential hardware limitation of wave digital filters and allows pipelining to be applied without introducing delays into the feedback loops. In particular, the implementation teaches how to increase the processing speed of a two port adaptor which is commonly used in the construction of wave digital filters.

公开(公告)号：US4866649A

公开(公告)日：1989-09-12

申请号：US116204

申请日：1987-11-03

Applicant: Alfred Fettweis

Inventor： Alfred Fettweis

IPC: H03H17/02

CPC classification number: H03H17/0201

Abstract: Multi-dimensional digital filters have such a circuit structure that their transfer function corresponds to that of an antimetrical filter, and have a characteristic function that is a rational function of the squares of the equivalent complex frequencies. Multi-dimensional filters, wave digital filters as well, can thereby be realized having a closed attenuation behavior.

Abstract translation: 多维数字滤波器具有这样的电路结构，即它们的传递函数对应于反曲线滤波器，并且具有作为等效复数频率的平方的有理函数的特征函数。 因此，可以实现具有闭合衰减行为的多维滤波器，波数字滤波器。

公开(公告)号：US4192008A

公开(公告)日：1980-03-04

申请号：US935873

申请日：1978-08-23

Applicant: Gordon J. Mandeville

Inventor： Gordon J. Mandeville

IPC: H03H17/02 ,  G06F15/34 ,  H03H7/10

CPC classification number: H03H17/0201

Abstract: The wave digital filter derived from a symmetric lattice reference filter includes two one-port networks each of which consists of storage elements interconnected by arithmetic units. Each arithmetic unit comprises a digital multiplier and three digital adders. Higher order filters thus require a substantial amount of arithmetic hardware. In accordance with the present invention, the amount of arithmetic hardware in the wave digital filter derived from a symmetric lattice filter is substantially reduced by multiplexing an arithmetic unit in each one-port network. In particular, a single arithmetic unit in each one-port is successively configured as each individual arithmetic unit of the non-multiplexed one-port. Intermediate output signals are stored in temporarily vacant storage elements. In one described embodiment of the present invention, the two multiplexed one-port networks of the wave digital filter are further multiplexed to require only one arithmetic unit.

Abstract translation: 从对称网格参考滤波器导出的波数字滤波器包括两个单端口网络，每个网络由存储元件组成，这些存储元件由算术单元互连。 每个算术单元包括数字乘法器和三个数字加法器。 因此，高阶滤波器需要大量的算术硬件。 根据本发明，通过对每个单端口网络中的算术单元进行多路复用，从对称网格滤波器导出的波数字滤波器中的算术硬件量大大降低。 特别地，每个单端口中的单个算术单元被连续配置为非多路复用单端口的每个单独运算单元。 中间输出信号存储在临时空的存储元件中。 在本发明的一个描述的实施例中，波数字滤波器的两个多路复用单端口网络被进一步多路复用以仅需要一个算术单元。

公开(公告)号：US3980872A

公开(公告)日：1976-09-14

申请号：US569306

申请日：1975-04-17

Applicant: Alfred Fettweis ,  Klaus Meerkoetter

Inventor： Alfred Fettweis ,  Klaus Meerkoetter

IPC: H03H7/01 ,  H03H17/02 ,  G06F15/34 ,  H03H7/10

CPC classification number: H03H17/0201

Abstract: A wave digital filter comprising at least one filter section without delay elements, each port thereof having a positive port admittance, and the signal quantities therein being operated upon, preferably within certain individual multiport adaptors of the filter section, in such a way that the pseudo power, ##EQU1## RECEIVED BY RESPECTIVE ADAPTOR PORTS V OF PORT ADMITTANCE G.sub.v and associated with input quantities a.sub.v (t.sub.m) and output quantities b.sub.v (t.sub.m) at respective operating times t.sub.m, is equal to or preferably only slightly greater than the value of the pseudo power function p (t.sub.m) which is obtained by omitting rounding or truncating, respectively, or overflow of the numbers being processed, and instead carrying out arithmetic operations precisely.

Abstract translation: 一种波数字滤波器，包括至少一个没有延迟元件的滤波器部分，其每个端口具有正端口导纳，并且其中的信号量优选地在滤波器部分的某些单独的多端口适配器内被操作，使得伪 功率，np（tm）= SIGMA Gv [av2（tm）-bv2（tm）]，v = 1通过端口配置Gv的相应适配器端口V接收并与输入量av（tm）和输出量bv（tm）相关联 在相应的操作时间tm处等于或优选地仅略微大于通过省略舍入或截断或正在处理的数字的溢出而获得的伪功率函数p（tm）的值，而代之以执行算术 操作准确。

公开(公告)号：US3919671A

公开(公告)日：1975-11-11

申请号：US42609073

申请日：1973-12-19

Applicant: SIEMENS AG

Inventor： FETTWEIS ALFRED ,  SEDLMEYER AXEL

IPC: H03H7/01 ,  H03H17/02 ,  H03H7/10

CPC classification number: H03H17/0201

Abstract: An improved filter technique, as for example, for use with ladder digital filters which allows any LC-ladder filter to be simply translated into a corresponding digital structure. If one of the characteristics of an adaptor is chosen equal to unity, the output of that adaptor will be independent of the input which means that the direct path between the input and output is interrupted, thus eliminating undesirable closed loops to exist. The invention also provides for isolation between input and output ports in filter elements without the use of delay devices.

Abstract translation: 改进的滤波器技术，例如用于梯形图数字滤波器，其允许任何LC梯形滤波器被简单地转换成相应的数字结构。 如果将适配器的特性中的一个选择为等于1，则该适配器的输出将与输入无关，这意味着输入和输出之间的直接路径中断，从而消除了不需要的闭环存在。 本发明还提供了滤波器元件之间的输入和输出端口之间的隔离，而不使用延迟器件。

公开(公告)号：US3886316A

公开(公告)日：1975-05-27

申请号：US33761673

申请日：1973-03-02

Applicant: GTE AUTOMATIC ELECTRIC LAB INC

Inventor： GETGEN LAWRENCE E

IPC: H03H17/02 ,  H04J3/20 ,  H04J3/00

CPC classification number: H03H17/0201 ,  H04J3/20

Abstract: A resonant transfer filter is disclosed for use in a resonant transfer system having a normally open gate which is closed at a sampling frequency for the transfer of energy. The filter incorporates inductance elements and capacitance elements having values determined directly from the transmission function for filters in the resonant transfer mode developed by Cattermole and having a passband width of less than one-half of the sampling frequency. The filter element values are determined by first choosing a prototype filter configuration which approximates the system attenuation requirements and which is suitable for resonant transfer applications. The prototype element values are used as starting values which are revised or altered to decrease the difference between the Cattermole transmission function when computed using the starting element values, and later the altered values, and the ideal transmission function, equaling unity over the passband and zero in the stopband.

Abstract translation: 公开了一种谐振转移滤波器，用于具有常开门的谐振传输系统，该常开门以能量转移的采样频率闭合。 滤波器包括电感元件和电容元件，其具有由Cattermole开发的谐振传输模式中的滤波器的传输函数直接确定的值，并具有小于采样频率的一半的通带宽度。 滤波器元件值通过首先选择近似系统衰减要求的原型滤波器配置并且适用于谐振传输应用来确定。 原型元素值被用作修改或改变的起始值，以减少使用起始元素值计算的Cattermole传递函数之间的差异，以及稍后改变的值以及理想的传输函数，在通带上等于1 在禁区。