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1. 发明授权

US5586191A Adjustable filter for differential microphones 失效
标题翻译：差分麦克风可调滤波器
公开(公告)号：US5586191A
公开(公告)日：1996-12-17
申请号：US226139
申请日：1994-04-11
申请人： Gary W. Elko , Robert A. Kubli , Dennis R. Morgan , James E. West
发明人： Gary W. Elko , Robert A. Kubli , Dennis R. Morgan , James E. West
IPC分类号： G01S3/803 , H04R1/38 , H04R3/00 , H04R3/08
CPC分类号： H04R1/38 , H04R3/005 , H04R3/08
摘要： A method and apparatus for providing a differential microphone with a desired frequency response are disclosed. The desired frequency response is provided by operation of a filter, having an adjustable frequency response, coupled to the microphone. The frequency response of the filter is set by operation of a controller, also coupled to the microphone, based on signals received from the microphone. The desired frequency response may be determined based upon the distance between the microphone and a source of sound, and may comprise both a relative frequency response and absolute output level. The frequency response of the filter may comprise the substantial inverse of the frequency response of the microphone to provide a flat response. Furthermore, the filter may comprise a Butterworth filter.
摘要翻译：公开了一种用于提供具有所需频率响应的差分麦克风的方法和装置。期望的频率响应由耦合到麦克风的具有可调频率响应的滤波器的操作提供。基于从麦克风接收的信号，通过控制器的操作来设置滤波器的频率响应，该控制器也耦合到麦克风。可以基于麦克风和声源之间的距离来确定期望的频率响应，并且可以包括相对频率响应和绝对输出电平。滤波器的频率响应可以包括麦克风的频率响应的实质逆向以提供平坦响应。此外，滤波器可以包括巴特沃斯滤波器。

2. 发明授权

US5329587A Low-delay subband adaptive filter 失效
标题翻译：低延迟子带自适应滤波器
公开(公告)号：US5329587A
公开(公告)日：1994-07-12
申请号：US30931
申请日：1993-03-12
申请人： Dennis R. Morgan , James C. H. Thi
发明人： Dennis R. Morgan , James C. H. Thi
IPC分类号： G05B13/00 , G06F17/14 , G10K11/178 , H03H17/00 , H03H17/02 , H03H21/00 , H04B1/10 , H04B3/04 , H04M9/08 , H04M1/00
CPC分类号： H04M9/082 , H03H21/0027
摘要： A subband adaptive filter is disclosed that retains the computational and convergence speed advantages of subband processing while eliminating delay in the signal path. The technique has applications in active noise control where delay seriously limits cancellation performance and in acoustic echo cancellation where transmission delay specifications may limit the use of conventional subband designs. A reference signal and a residual error signal are each decomposed into a plurality of subband signals, and a set of adaptive weighting coefficients is generated for each of these subbands by a conventional complex LMS (least-mean-squared) technique. These sets of subband weighting coefficients are then transformed into the frequency domain, appropriately stacked and inverse transformed back into the time domain to obtain wideband filter coefficients for a programmable filter. The reference signal, which is correlated with the disturbance signal to be eliminated, is filtered by this programmable filter to produce a disturbance estimate signal which may be subtracted from the signal containing the disturbance. The process iterates in order to minimize the residual error signal and thereby reduce the disturbance.
摘要翻译：公开了一种子带自适应滤波器，其保留子带处理的计算和收敛速度优点，同时消除信号路径中的延迟。该技术在主动噪声控制中具有应用，其中延迟严重地限制了消除性能和声学回波消除，其中传输延迟规范可能限制常规子带设计的使用。参考信号和残余误差信号各自被分解为多个子带信号，并且通过常规的复LMS（最小均方）技术为这些子带中的每一个产生一组自适应加权系数。然后将这些子带加权系数集合变换到频域中，适当地堆叠并逆变换回时域以获得可编程滤波器的宽带滤波器系数。与要消除的干扰信号相关的参考信号被该可编程滤波器滤波，以产生可以从包含扰动的信号中减去的干扰估计信号。该过程迭代以便最小化残余误差信号，从而减少干扰。

3. 发明申请

US20120069944A1 Frequency Synchronization Using Clock Recovery Loop with Adaptive Packet Filtering 有权
标题翻译：使用具有自适应包过滤的时钟恢复循环的频率同步
公开(公告)号：US20120069944A1
公开(公告)日：2012-03-22
申请号：US12885958
申请日：2010-09-20
申请人： Ilija Hadzic , Dennis R. Morgan
发明人： Ilija Hadzic , Dennis R. Morgan
IPC分类号： H03D3/24
CPC分类号： H04J3/0667 , H04L7/033
摘要： An endpoint or other communication device of a communication system includes a clock recovery loop having a phase error estimator. The communication device is operative as a slave device relative to another communication device that is operative as a master device. The clock recovery loop is configured to control a slave clock of the slave device responsive to a phase error estimate generated by the phase error estimator so as to synchronize the slave clock with a master clock of the master device. The phase error estimator comprises a plurality of filters each configured to generate a different estimate of master clock phase using at least a subset of a plurality of packets received from the master device, and control logic for adaptively selecting at least a particular one of the plurality of filters for use in generating the phase error estimate to be processed in the clock recovery loop.
摘要翻译：通信系统的端点或其他通信设备包括具有相位误差估计器的时钟恢复环路。通信设备相对于作为主设备操作的另一通信设备而作为从设备操作。时钟恢复环路被配置为响应于由相位误差估计器产生的相位误差估计来控制从设备的从时钟，以使从时钟与主器件的主时钟同步。相位误差估计器包括多个滤波器，每个滤波器被配置为使用从主设备接收的多个分组的至少一个子集来生成主时钟相位的不同估计，以及用于自适应地选择至少一个特定的一个的控制逻辑的滤波器用于产生在时钟恢复环路中处理的相位误差估计。

4. 发明授权

US07753849B2 Doppler radar cardiopulmonary sensor and signal processing system and method for use therewith 有权
标题翻译：多普勒雷达心肺传感器及信号处理系统及其使用方法
公开(公告)号：US07753849B2
公开(公告)日：2010-07-13
申请号：US12117947
申请日：2008-05-09
申请人： Dennis R. Morgan , Michael G. Zierdt
发明人： Dennis R. Morgan , Michael G. Zierdt
IPC分类号： B65D81/00
CPC分类号： G01S13/583 , A61B5/0205 , A61B5/024 , A61B5/0816 , A61B5/113 , G01S13/589 , G01S13/88 , G01S2007/4082
摘要： A Doppler radar signal processing system and method and a Doppler radar employing the system or the method. In one embodiment, the system includes: (1) an input configured to receive at least one radar output signal representing a reflected Doppler radar signal, (2) signal processing circuitry coupled to the input and configured to produce an arc-length cardiopulmonary signal from the at least one radar output signal and employ a respiration fundamental frequency estimate to extract a heart rate signal from the arc-length cardiopulmonary signal and (3) an output coupled to the signal processing circuitry and configured to provide the heart rate signal.
摘要翻译：一种采用该系统或方法的多普勒雷达信号处理系统和方法以及多普勒雷达。在一个实施例中，该系统包括：（1）被配置为接收表示反射的多普勒雷达信号的至少一个雷达输出信号的输入，（2）耦合到该输入的信号处理电路，并且被配置为产生一个弧长心肺信号，所述至少一个雷达输出信号并且采用呼吸基频估计来从所述弧长心肺信号中提取心率信号;以及（3）耦合到所述信号处理电路并被配置为提供所述心率信号的输出。

5. 发明申请

US20090278728A1 Doppler Radar Cardiopulmonary Sensor and Signal Processing System and Method for Use Therewith 有权
标题翻译：多普勒雷达心肺传感器及信号处理系统及其使用方法
公开(公告)号：US20090278728A1
公开(公告)日：2009-11-12
申请号：US12117947
申请日：2008-05-09
申请人： Dennis R. Morgan , Michael G. Zierdt
发明人： Dennis R. Morgan , Michael G. Zierdt
IPC分类号： G01S13/58 , A61B5/02
CPC分类号： G01S13/583 , A61B5/0205 , A61B5/024 , A61B5/0816 , A61B5/113 , G01S13/589 , G01S13/88 , G01S2007/4082
摘要： A Doppler radar signal processing system and method and a Doppler radar employing the system or the method. In one embodiment, the system includes: (1) an input configured to receive at least one radar output signal representing a reflected Doppler radar signal, (2) signal processing circuitry coupled to the input and configured to produce an arc-length cardiopulmonary signal from the at least one radar output signal and employ a respiration fundamental frequency estimate to extract a heart rate signal from the arc-length cardiopulmonary signal and (3) an output coupled to the signal processing circuitry and configured to provide the heart rate signal.
摘要翻译：一种采用该系统或方法的多普勒雷达信号处理系统和方法以及多普勒雷达。在一个实施例中，该系统包括：（1）被配置为接收表示反射的多普勒雷达信号的至少一个雷达输出信号的输入，（2）耦合到该输入的信号处理电路，并且被配置为产生一个弧长心肺信号，所述至少一个雷达输出信号并且采用呼吸基频估计来从所述弧长心肺信号中提取心率信号;以及（3）耦合到所述信号处理电路并被配置为提供所述心率信号的输出。

6. 发明授权

US06270668B1 Filter element sealing mechanism 失效
标题翻译：过滤元件密封机构
公开(公告)号：US06270668B1
公开(公告)日：2001-08-07
申请号：US09082734
申请日：1998-05-21
申请人： Dennis R. Morgan , Edd D. Gryder
发明人： Dennis R. Morgan , Edd D. Gryder
IPC分类号： B01D2707
CPC分类号： B01D29/073 , B01D29/54 , B01D2201/34
摘要： The present invention typically involves the use of a compressed blocking area to assist in sealing a filter element and avoiding channeling in a wound fibrous tissue filtering system. It may involve the use of multiple, spaced, interstitial rings. It may involve the intentional wasting of a portion of the filter element to create a compressed blocking area. It may also involve the use of different heights of the rings and may include the use of compression and secondary tapers on the rings. The heights and spacing of the rings with respect to the other ring or rings may vary in a certain ratio.
摘要翻译：本发明通常涉及使用压缩的阻塞区域以帮助密封过滤元件并避免在伤口纤维组织过滤系统中引导。它可能涉及使用多个间隔的间隙环。它可能涉及有意地浪费过滤元件的一部分以产生压缩的阻塞区域。它也可能涉及使用不同高度的环，并且可以包括在环上使用压缩和次级锥形。环相对于另一个环或环的高度和间距可以以一定比例变化。

7. 发明授权

US4204262A Optical signal processing apparatus 失效
标题翻译：光信号处理装置
公开(公告)号：US4204262A
公开(公告)日：1980-05-20
申请号：US800155
申请日：1977-05-25
申请人： Michael M. Fitelson , Dennis R. Morgan
发明人： Michael M. Fitelson , Dennis R. Morgan
IPC分类号： G01S7/02 , G01S7/52 , G06E3/00 , G06G9/00 , G06G7/19
CPC分类号： G01S15/8968 , G01S7/02 , G06E3/001
摘要： Signal processing apparatus having the capability to perform simultaneous space-time processing of sonar, radar and similar time-varying signals, and to effect the Fourier transform of multiple time-varying signals through electro-optical photoelastic means, photoconductive means, or photoemissive means.
摘要翻译：信号处理装置具有对声纳，雷达和类似的时变信号进行同时时空处理的能力，并通过电光光弹性装置，光电装置或光发射装置实现多个时变信号的傅立叶变换。

8. 发明授权

US06319416B2 Method of fluid filtering employing a novel cartridge sealing mechanism 有权
标题翻译：采用新型墨盒密封机构的流体过滤方法
公开(公告)号：US06319416B2
公开(公告)日：2001-11-20
申请号：US09761504
申请日：2001-01-17
申请人： Dennis R. Morgan , Edd D. Gryder
发明人： Dennis R. Morgan , Edd D. Gryder
IPC分类号： B01D3700
CPC分类号： B01D29/073 , B01D29/54 , B01D2201/34
摘要： The present invention typically involves the use of a compressed blocking area to assist in sealing a filter element and avoiding channeling in a wound fibrous tissue filtering system. It may involve the use of multiple, spaced, interstitial rings. It may involve the intentional wasting of a portion of the filter element to create a compressed blocking area. It may also involve the use of different heights of the rings and may include the use of compression and secondary tapers on the rings. The heights and spacing of the rings with respect to the other ring or rings may vary in a certain ratio.
摘要翻译：本发明通常涉及使用压缩的阻塞区域以帮助密封过滤元件并避免在伤口纤维组织过滤系统中引导。它可能涉及到使用多个间隔的间隙环。它可能涉及有意地浪费过滤元件的一部分以产生压缩的阻塞区域。它也可能涉及使用不同高度的环，并且可以包括在环上使用压缩和次级锥形。环相对于另一个环或环的高度和间距可以以一定比例变化。

9. 发明授权

US5553014A Adaptive finite impulse response filtering method and apparatus 失效
标题翻译：自适应有限脉冲响应滤波方法及装置
公开(公告)号：US5553014A
公开(公告)日：1996-09-03
申请号：US332224
申请日：1994-10-31
申请人： Phillip L. De Leon, II , Dennis R. Morgan
发明人： Phillip L. De Leon, II , Dennis R. Morgan
IPC分类号： H03H17/02 , H03H17/06 , H03H21/00 , H04B3/23 , H04M9/08 , G06F15/31
CPC分类号： H03H21/0012 , H04M9/082 , H03H2021/007 , H03H2021/0074
摘要： A signal processing method and apparatus including a digital finite impulse response filter wherein the error caused by slow asymptotic convergence of the filter's adaptive coefficients is reduced. A first input signal is provided to an adaptive FIR filter including a coefficient calculator, finite impulse response FIR filter and a summation device. The filter also receives a second input signal, which may, for example, be the echo of the first input signal. The first input signal and the second input signal have a first bandwidth. The adaptive FIR filter then provides an output signal to a filter, which then filters the output signal to a second bandwidth which is less than the first bandwidth. The processed signal will have less error caused by the slow asymptotic convergence of the filter than previously possible because the error-concentrated frequency components near the band edge of the first frequency band have been filtered or removed.
摘要翻译：一种包括数字有限脉冲响应滤波器的信号处理方法和装置，其中由滤波器的自适应系数的慢渐近收敛引起的误差减小。第一输入信号被提供给包括系数计算器，有限脉冲响应FIR滤波器和求和装置的自适应FIR滤波器。滤波器还接收第二输入信号，其可以例如是第一输入信号的回波。第一输入信号和第二输入信号具有第一带宽。然后，自适应FIR滤波器向滤波器提供输出信号，滤波器然后将输出信号过滤到小于第一带宽的第二带宽。由于滤波器或滤波器附近的频带边缘附近的误差集中频率分量已经被处理的信号具有由先前可能的滤波器的渐近渐近收敛引起的较小的误差。

10. 发明授权

US08693608B2 Frequency synchronization using clock recovery loop with adaptive packet filtering 有权
标题翻译：使用具有自适应包过滤的时钟恢复环路进行频率同步
公开(公告)号：US08693608B2
公开(公告)日：2014-04-08
申请号：US12885958
申请日：2010-09-20
申请人： Ilija Hadzic , Dennis R. Morgan
发明人： Ilija Hadzic , Dennis R. Morgan
IPC分类号： H03D3/24
CPC分类号： H04J3/0667 , H04L7/033
摘要： An endpoint or other communication device of a communication system includes a clock recovery loop having a phase error estimator. The communication device is operative as a slave device relative to another communication device that is operative as a master device. The clock recovery loop is configured to control a slave clock of the slave device responsive to a phase error estimate generated by the phase error estimator so as to synchronize the slave clock with a master clock of the master device. The phase error estimator comprises a plurality of filters each configured to generate a different estimate of master clock phase using at least a subset of a plurality of packets received from the master device, and control logic for adaptively selecting at least a particular one of the plurality of filters for use in generating the phase error estimate to be processed in the clock recovery loop.
摘要翻译：通信系统的端点或其他通信设备包括具有相位误差估计器的时钟恢复环路。通信设备相对于作为主设备操作的另一通信设备而作为从设备操作。时钟恢复环路被配置为响应于由相位误差估计器产生的相位误差估计来控制从设备的从时钟，以使从时钟与主器件的主时钟同步。相位误差估计器包括多个滤波器，每个滤波器被配置为使用从主设备接收的多个分组的至少一个子集来生成主时钟相位的不同估计，以及用于自适应地选择至少一个特定的一个的控制逻辑的滤波器用于产生在时钟恢复环路中处理的相位误差估计。

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