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公开(公告)号：US20080247471A1
公开(公告)日：2008-10-09
申请号：US11909060
申请日：2006-03-17
申请人： Christy L. She , John G. Harris , Jose C. Principe
发明人： Christy L. She , John G. Harris , Jose C. Principe
IPC分类号： H04B14/04
CPC分类号： A61B5/04001 , A61B5/7225 , A61B5/726 , G06K9/00523
摘要： A multi-scale spike detector for performing multi-resolution spike detections of a signal is provided. The spike detector includes a gamma filter having cascaded low-pass filters. The cascaded filters collectively provide different cutoff frequencies, each of the filters having a respective output. One of the filters has an input, at which the signal is received. The spike detector further includes combining circuitry that combines at least some of the respective outputs of the cascaded filters. The differences formed from this combining provide a waveform representation of the input signal. The waveform representation consists essentially of spikes that occur in the signal.
摘要翻译： 提供了用于执行信号的多分辨率尖峰检测的多尺度尖峰检测器。 尖峰检测器包括具有级联低通滤波器的伽马滤波器。 级联滤波器共同提供不同的截止频率，每个滤波器具有相应的输出。 滤波器中的一个具有接收信号的输入端。 尖峰检测器还包括组合电路，其组合级联滤波器的相应输出的至少一些。 由该组合形成的差异提供了输入信号的波形表示。 波形表示基本上由信号中出现的尖峰组成。
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公开(公告)号：US07965779B2
公开(公告)日：2011-06-21
申请号：US11909060
申请日：2006-03-17
申请人： Christy L. She , John G. Harris , Jose C. Principe
发明人： Christy L. She , John G. Harris , Jose C. Principe
IPC分类号： H04B14/04
CPC分类号： A61B5/04001 , A61B5/7225 , A61B5/726 , G06K9/00523
摘要： A multi-scale spike detector for performing multi-resolution spike detections of a signal is provided. The spike detector includes a gamma filter having cascaded low-pass filters. The cascaded filters collectively provide different cutoff frequencies, each of the filters having a respective output. One of the filters has an input, at which the signal is received. The spike detector further includes combining circuitry that combines at least some of the respective outputs of the cascaded filters. The differences formed from this combining provide a waveform representation of the input signal. The waveform representation consists essentially of spikes that occur in the signal.
摘要翻译： 提供了用于执行信号的多分辨率尖峰检测的多尺度尖峰检测器。 尖峰检测器包括具有级联低通滤波器的伽马滤波器。 级联滤波器共同提供不同的截止频率，每个滤波器具有相应的输出。 滤波器中的一个具有接收信号的输入端。 尖峰检测器还包括组合电路，其组合级联滤波器的相应输出的至少一些。 由该组合形成的差异提供了输入信号的波形表示。 波形表示基本上由信号中出现的尖峰组成。
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公开(公告)号：US08139654B2
公开(公告)日：2012-03-20
申请号：US12063099
申请日：2006-08-08
申请人： Du Chen , John G. Harris , Jose C. Principe
发明人： Du Chen , John G. Harris , Jose C. Principe
IPC分类号： H04L27/00
摘要： A method for coding time signals based on generating an asynchronous biphasic pulse train is provided. The method includes generating response signals based upon one or more input signals. A pulse comprises a positive pulse if a voltage of the response signal is greater than a predetermined positive voltage threshold. A pulse comprises a negative pulse if the voltage of the response signal is less than a predetermined negative voltage threshold. The method further includes a method for the reconstruction of a uniformly sampled version of the original signal.
摘要翻译： 提供了一种基于产生异步双相脉冲串来编码时间信号的方法。 该方法包括基于一个或多个输入信号产生响应信号。 如果响应信号的电压大于预定的正电压阈值，则脉冲包括正脉冲。 如果响应信号的电压小于预定的负电压阈值，则脉冲包括负脉冲。 该方法还包括用于重构原始信号的均匀采样版本的方法。
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公开(公告)号：US20080192841A1
公开(公告)日：2008-08-14
申请号：US12063099
申请日：2006-08-08
申请人： Du Chen , John G. Harris , Jose C. Principe
发明人： Du Chen , John G. Harris , Jose C. Principe
摘要： A method for coding time signals based on generating an asynchronous biphasic pulse train is provided. The method includes generating response signals based upon one or more input signals. A pulse comprises a positive pulse if a voltage of the response signal is greater than a predetermined positive voltage threshold. A pulse comprises a negative pulse if the voltage of the response signal is less than a predetermined negative voltage threshold. The method further includes a method for the reconstruction of a uniformly sampled version of the original signal.
摘要翻译： 提供了一种基于产生异步双相脉冲串来编码时间信号的方法。 该方法包括基于一个或多个输入信号产生响应信号。 如果响应信号的电压大于预定的正电压阈值，则脉冲包括正脉冲。 如果响应信号的电压小于预定的负电压阈值，则脉冲包括负脉冲。 该方法还包括用于重构原始信号的均匀采样版本的方法。
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公开(公告)号：US06420927B1
公开(公告)日：2002-07-16
申请号：US09633335
申请日：2000-08-07
IPC分类号： H03K500
CPC分类号： H03K5/135 , H03H19/004
摘要： The subject invention pertains to a method and circuit design particularly useful for long time constant RC active or passive circuits in either continuous or discrete time domains. The subject invention also relates to a method and circuit design useful for long time constant RL active or passive circuits in either continuous or discrete time domains. The subject invention can find advantage in the mixed-signal, electronic circuit component market. The subject invention widens the application and the price/performance ratio of VLSI analog electronic circuits, and can be easily included in conventional circuit designs.
摘要翻译： 本发明涉及对连续或离散时域中的长时间常数RC有源或无源电路特别有用的方法和电路设计。 本发明还涉及对连续或离散时域中的长时间常数RL有源或无源电路有用的方法和电路设计。 本发明可以在混合信号，电子电路元件市场中找到优势。 本发明扩大了VLSI模拟电子电路的应用和价格/性能比，并且可以容易地包括在常规电路设计中。
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6.发明授权Amplifier with pulse coded output and remote signal reconstruction from the pulse output 有权具有脉冲编码输出和脉冲输出远程信号重建的放大器公开(公告)号：US07324035B2
公开(公告)日：2008-01-29
申请号：US10844950
申请日：2004-05-13
申请人： John G. Harris , Du Chen , Dazhi Wei , Jose C. Principe
发明人： John G. Harris , Du Chen , Dazhi Wei , Jose C. Principe
IPC分类号： H03M1/12 , A61B5/0476
CPC分类号： H03F3/185 , H03F3/45183 , H03F3/45475 , H03F2203/45136 , H03F2203/45518 , H03F2203/45524 , H03F2203/45526 , H03F2203/45544 , H03M1/60
摘要： An amplifier-based system having pulsed output includes an amplifier for amplifying a time varying voltage signal to produce an output voltage signal. A voltage-to-current (V-I) converter converts the output voltage signal into a current signal. An output stage including a current integrator integrates the current signal to generate an integrated voltage. An amplitude to time converter generates a pulse train from the integrated voltage, wherein a timing of the pulses in the pulse train represents the original time varying voltage signal. The pulse train representation permits transmission and accurate remote reconstruction of the original time varying voltage signal, such as signals generated by electrodes implanted inside a subject, including neural signals.
摘要翻译： 具有脉冲输出的基于放大器的系统包括用于放大时变电压信号以产生输出电压信号的放大器。 电压 - 电流（V-I）转换器将输出电压信号转换为电流信号。 包括电流积分器的输出级积分电流信号以产生积分电压。 振幅到时间转换器从积分电压产生脉冲串，其中脉冲串中的脉冲的定时表示原始时变电压信号。 脉冲串表示允许原始时变电压信号的传输和精确的远程重建，例如植入物体内的电极产生的包括神经信号的信号。
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7.发明授权公开(公告)号：US07474345B2
公开(公告)日：2009-01-06
申请号：US10217581
申请日：2002-08-12
申请人： Qiang Luo , Zhiliang Julian Chen , John G. Harris , Steve Clynes , Michael Erwin
发明人： Qiang Luo , Zhiliang Julian Chen , John G. Harris , Steve Clynes , Michael Erwin
CPC分类号： H04N5/335
摘要： A time domain sampling technique for a CMOS imager enables a wide dynamic range and flexibility by employing up to two-degrees of freedom during such sampling. Two degrees of freedom can be achieved by making one or both of an integration time and a reference (e.g., voltage or current) variable during sampling. The sampling (or image capture) is implemented by associating a time with when a pixel has a desired value relative to the reference in response to the pixel receiving incident light. The reference can be fixed or variable during different portions of the sampling, and further can be programmable to implement a desired sampling pattern for a given application.
摘要翻译： CMOS成像器的时域采样技术可以在这种采样过程中采用高达两个自由度的宽动态范围和灵活性。 通过在采样期间通过使积分时间和参考（例如，电压或电流）变量中的一个或两个可以实现两个自由度。 采样（或图像捕获）是通过将时间与当像素具有相对于基准的期望值相对应于像素接收入射光而相关联来实现的。 参考在采样的不同部分期间可以是固定的或可变的，并且还可以被编程以实现给定应用的期望的采样模式。
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">8.发明授权"Resistive fuse" analog hardware for detecting discontinuities in early vision system 失效用于检测早期视觉系统不连续性的“电阻式保险丝”模拟硬件
公开(公告)号：US5062000A
公开(公告)日：1991-10-29
申请号：US412329
申请日：1989-09-25
申请人： John G. Harris , Christof Koch
发明人： John G. Harris , Christof Koch
摘要： This invention is primarily a "resistive fuse" circuit, being a hardware circuit that explicitly implements either analog or binary line processes in a controlled fashion. In a machine vision system for viewing an area and providing individual voltages representing the light intensity of a plurality of pixel positions within the area, this invention permits the method of operation for smoothing the individual voltages and simultaneously recognizing and preserving discontinuities in the area comprising the steps of, connecting respective ones of the individual voltages to respective ones of a plurality of intersections of a balanced network of indentical smoothing elements interconnected at intersections; allowing currents from the individual voltages to pass through the smoothing elements between the intersections and settle; within each element, providing a fixed resistance to voltages thereacross which are below a pre-established threshold amount and providing an infinite resistance to voltages thereacross which are above the pre-established threshold amount whereby as the currents flow the individual voltages are smoothed and discontinuities in the area reflected in the individual voltages are simultaneously recognized and preserved rather than being smoothed over; and, taking individual smoothed voltages from the intersections as data from the machine vision system for further processing. In a dynamically reconfigurable embodiment, the method further includes the steps of analyzing the individual smoothed voltages from the intersections to determine pixels associated with possible discontinuities and dynamically lowering said threshold amount in ones of the elements associated with pixels having possible discontinuities associated therewith whereby sensitivity to recognition of discontinuities is increased.
摘要翻译： 本发明主要是一种“电阻式熔丝”电路，它是以受控的方式明确地实现模拟或二进制线路过程的硬件电路。 在用于观看区域并且提供表示区域内的多个像素位置的光强度的单独电压的机器视觉系统中，本发明允许用于平滑各个电压的操作方法，并且同时识别和保留包括该区域的区域中的不连续性 将各个电压中的各个电压连接到在交叉路口互连的凹凸平滑元件的平衡网络的多个交点中的各个交点的步骤; 允许来自各个电压的电流通过交叉点之间的平滑元件并沉降; 在每个元件内，提供固定的电阻，其电压低于预先建立的阈值量，并且提供对超过预先建立的阈值的电压的无限阻力，由此当电流流动时，各个电压被平滑，并且不连续性 反映在各个电压中的区域同时被识别和保存，而不是被平滑化; 并且将来自交叉点的各个平滑电压作为来自机器视觉系统的数据进行进一步处理。 在动态可重构实施例中，该方法还包括以下步骤：分析来自交叉点的各个平滑电压，以确定与可能的不连续性相关联的像素，并且在与具有与其相关联的可能的不连续性的像素相关联的元素中的一个元素中动态降低所述阈值量， 识别不连续性增加。
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公开(公告)号：US5598488A
公开(公告)日：1997-01-28
申请号：US120591
申请日：1993-09-13
申请人： Tomaso Poggio , John G. Harris , Nicola Ancona
发明人： Tomaso Poggio , John G. Harris , Nicola Ancona
CPC分类号： G06T7/20
摘要： An object movement estimator (400) predicts optical flow by estimating changes in sensed images using one-dimensional correlations. Sensed image portions are stored at a first instant of time and compared with sensed image portions at a second instant of time. An optimal flow is estimated by performing a one-dimensional correlation of the sensed image portions at the first and second instants of time, and a time-to-contact is estimated based on the predicted optical flow thus obtained.
摘要翻译： 物体运动估计器（400）通过使用一维相关估计感测图像的变化来预测光流。 感测的图像部分在第一时刻存储，并在第二时刻与感测的图像部分进行比较。 通过在第一和第二时刻执行感测图像部分的一维相关来估计最佳流量，并且基于如此获得的预测光流量来估计接触时间。
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10.发明授权Digital sound leveling device and method to reduce the risk of noise induced hearing loss 有权数字声音调平装置和方法，降低噪声引起的听力损失的风险公开(公告)号：US08804975B2
公开(公告)日：2014-08-12
申请号：US13148534
申请日：2010-02-12
IPC分类号： H03G3/20
CPC分类号： H03G9/025 , H03G3/3089 , H03G9/005
摘要： Devices and methods for digital sound leveling are disclosed. The subject devices and methods can be used to reduce the risk of noise induced hearing loss. According to an embodiment, an audio file can be parsed into frames that are filtered using an A-weighted digital filter and scaled to a desired power level. Accordingly, the dynamic range of an audio output at a particular volume level can be controlled.
摘要翻译： 公开了用于数字声音调平的装置和方法。 可以使用主题设备和方法来降低噪声引起的听力损失的风险。 根据实施例，音频文件可以被解析为使用A加权数字滤波器滤波并缩放到期望功率电平的帧。 因此，可以控制特定音量级别的音频输出的动态范围。
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