公开(公告)号：US20070153123A1

公开(公告)日：2007-07-05

申请号：US11643445

申请日：2006-12-21

申请人： Guolin Pan ,  Fabian Lis

发明人： Guolin Pan ,  Fabian Lis

IPC分类号： H04N7/01

CPC分类号： H04N7/012 ,  H04N7/0137

摘要： A method for deinterlacing an interlaced video signal is provided which employs a median single edge based line average field interpolation algorithm. The algorithm employs a median filter to determine whether motion occurred between scanning two fields of an interlaced frame and, based on the results, reconstructing intermediate lines in the display frame. The median performs a median computation by determining whether a target pixel value is a median value, rather than computing the median value and determining whether the target pixel value is equal to the computed median.

摘要翻译： 提供了一种用于去隔行隔行扫描视频信号的方法，其采用基于中值单边缘的线平均场插值算法。 该算法采用中值滤波器来确定是否在隔行扫描帧的两个场之间发生运动，并且基于该结果重建显示帧中的中间线。 中值通过确定目标像素值是否是中值来执行中值计算，而不是计算中值并且确定目标像素值是否等于计算的中值。

公开(公告)号：US10479443B2

公开(公告)日：2019-11-19

申请号：US15572530

申请日：2016-11-06

申请人： Fabian Lis ,  Gustavo Adrian Lis

发明人： Fabian Lis ,  Gustavo Adrian Lis

IPC分类号： B62M6/50 ,  B62M6/55 ,  B62M6/90

摘要： Disclosed is an energy harvesting power-assist system and method for human powered light vehicles. The power-assist system comprises a drive mechanism, one or more motor/generators and a high capacity storage device. The system continuously harvests and stores energy which is converted to motion by the motors, providing additional power to the user's pedaling. A controller determines the amount of pedal assist based on a user's preset value, and manages the charge and discharge of the high capacity storage device. As such, the system does not require any other external energy source, and the storage device never needs external charging under the described usage cases.

公开(公告)号：US07107303B2

公开(公告)日：2006-09-12

申请号：US10444265

申请日：2003-05-23

申请人： Joshua Kablotsky ,  Fabian Lis

发明人： Joshua Kablotsky ,  Fabian Lis

IPC分类号： G06F17/10

CPC分类号： H04B3/237 ,  H04B3/238

摘要： An echo canceller includes an adaptive digital filter that generates an estimated echo signal {circumflex over (z)}[k] in response to (i) a sampled input data sequence x[k] and (ii) an error signal sequence e[k] indicative of the difference between a far end signal sequence y[k] and the estimated echo signal {circumflex over (z)}[k]. The adaptive filter includes N filter taps that each provide an associated tap output signal, wherein the adaptive digital filter generates the estimated echo signal {circumflex over (z)}[k] using the associated tap output signals from M of the N filter taps selected in response to a time delay estimate signal. The adaptive filter computes filter coefficients for each of the M number of the N filter taps using the associated tap output signals from the M number of said N filter taps. The echo canceller also includes a time delay estimator that is responsive to the sampled input data sequence x[k] and the signal sequence y[k], and estimates a plurality of delays within the sequence x[k], and provides a time delay estimate that is indicative of the location of the plurality of delays within the sequence x[k]. A summer computes the difference between signal sequence y[k] and the estimated echo signal {circumflex over (z)}[k] and provides an output signal indicative thereof. The echo canceller of the present invention can be considered a sparse echo canceller, since the adaptive filter selectively uses a subset of the available filter taps to compute the estimated echo signal. The filter taps are selected based upon time delay estimate data associated with the echo. For example, an adaptive filter having N taps may process signals from M of the N filter taps, where the M taps are selected based upon the time delay estimation from the time delay estimator.

摘要翻译： 回波消除器包括自适应数字滤波器，其响应于（i）采样的输入数据序列x [k]和（ii）指示第一和第二信号之间的差异的误差信号序列e [k]产生估计的回波信号z [k] 远端信号序列y [k]和估计的回波信号z [k]。 自适应滤波器包括N个滤波器抽头，每个滤波器抽头提供相关的抽头输出信号，其中自适应数字滤波器使用来自响应于时间延迟选择的N个滤波器抽头的来自M的相关联的抽头输出信号来生成估计回波信号z [k] 估计信号。 自适应滤波器使用来自M个所述N个滤波器抽头的关联抽头输出信号来计算M个N个滤波器抽头中的每一个的滤波器系数。 回波消除器还包括响应于采样的输入数据序列x [k]和信号序列y [k]的时间延迟估计器，并估计序列x [k]内的多个延迟，并提供时间延迟 估计指示序列x [k]内的多个延迟的位置。 夏天计算信号序列y [k]和估计的回波信号z [k]之间的差，并提供指示它的输出信号。 本发明的回波消除器可以被认为是稀疏回波消除器，因为自适应滤波器选择性地使用可用滤波器抽头的子集来计算估计的回波信号。 基于与回波相关联的时间延迟估计数据来选择滤波器抽头。 例如，具有N个抽头的自适应滤波器可以处理来自N个滤波器抽头的M的信号，其中基于来自时间延迟估计器的时间延迟估计来选择M个抽头。

公开(公告)号：US20180154981A1

公开(公告)日：2018-06-07

申请号：US15572530

申请日：2016-11-06

申请人： Fabian Lis ,  Gustavo Adrian Lis

发明人： Fabian Lis ,  Gustavo Adrian Lis

IPC分类号： B62M6/50 ,  B62M6/90 ,  B62M6/55

摘要： Disclosed is an energy harvesting power-assist system and method for human powered light vehicles. The power-assist system comprises a drive mechanism, one or more motor/generators and a high capacity storage device. The system continuously harvests and stores energy which is converted to motion by the motors, providing additional power to the user's pedaling. A controller determines the amount of pedal assist based on a user's preset value, and manages the charge and discharge of the high capacity storage device. As such, the system does not require any other external energy source, and the storage device never needs external charging under the described usage cases.

公开(公告)号：US07251299B2

公开(公告)日：2007-07-31

申请号：US10444266

申请日：2003-05-23

申请人： Fabian Lis ,  Joshua Kablotsky ,  Haim Primo

发明人： Fabian Lis ,  Joshua Kablotsky ,  Haim Primo

IPC分类号： H04D1/00 ,  H04L27/06

CPC分类号： H04L25/0214 ,  H04B3/23

摘要： A system for time delay estimation in a discrete time processing system includes a cross correlator that performs cross correlation on a first signal and a second signal, and provides a cross correlated output signals indicative thereof. A lag smoother receives the cross correlated output signals, and provides lag smoothed output signals indicative thereof. A select logic module selects a pre-defined number of signal values from a respective set indicative of the lag smoothed output signals to compute the time delay estimation associated with the first and second signals.

摘要翻译： 在离散时间处理系统中用于时间延迟估计的系统包括在第一信号和第二信号上执行互相关的交叉相关器，并提供指示其的交叉相关输出信号。 滞后平滑器接收交叉相关输出信号，并提供指示其的滞后平滑输出信号。 选择逻辑模块从指示滞后平滑输出信号的相应集合中选择预定数量的信号值，以计算与第一和第二信号相关联的时延估计。

公开(公告)号：US06950842B2

公开(公告)日：2005-09-27

申请号：US10055447

申请日：2002-01-23

申请人： Fabian Lis

发明人： Fabian Lis

IPC分类号： H04B3/23 ,  G06F17/10

CPC分类号： H04B3/23

摘要： The present invention is directed to an echo canceller adapted for use in a communication system that includes a hybrid circuit. The echo canceller comprises an adaptive digital filter that generates an estimated echo signal {circumflex over (z)}[k] in response to: (i) a sampled input data sequence x[k] and (ii) an error signal sequence e[k] indicative of the difference between a near end signal sequence y[k] and the estimated echo signal {circumflex over (z)}[k]. The adaptive digital filter computes filter coefficients based upon the error signal sequence e[k] using a stochastic quadratic descent estimator, such as for example a least mean square (LMS) estimator, that employs a dynamically adjustable step size vector μ[k]. The adaptive digital filter computes the dynamically adjustable step size vector μ[k] of the form μ _ ⁡ [ k + 1 ] = μ _ ⁡ [ k ] + α ⁢   ⁢ ϕ _ ⁡ [ k ] · x _ ⁡ [ k ] ⁢ e ⁡ [ k ] ⁢ | μ min μ max , where φ[k+1]=φ[k]•(1−μ[k]•x2[k])+e[k])+e[k]x[k] and α is a scalar. In an open loop embodiment, the dynamically adjustable step size vector μ[k] equals to μ[k]=μ[k]1, that is, all elements of the vector take the same value collapsing to the particular case of a scalar. The step size is computed using an expression of the form μ[k+1]=μ[k]+ξ[k], where ξ[k] is an empirically derived set of values.