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1. 发明授权

US5212392A Optical sensing apparatus for detecting linear displacement of an object and method of operation thereof with detector matrix and centroid detection 失效
标题翻译：用于检测物体的线性位移的光学感测装置及其检测器矩阵和质心检测的操作方法
公开(公告)号：US5212392A
公开(公告)日：1993-05-18
申请号：US806507
申请日：1991-12-13
申请人： Ertugrul Berkcan , Chung-Yih Ho , Jerome J. Tiemann , Fathy F. Yassa
发明人： Ertugrul Berkcan , Chung-Yih Ho , Jerome J. Tiemann , Fathy F. Yassa
IPC分类号： G01D5/30
CPC分类号： G01D5/30
摘要： Apparatus for sensing linear displacement of an object between first and second locations along an axis is used to sense conditions that can be made to vary displacement of an object in accordance with the condition, such as temperature, pressure and rotary motion. A light beam projected along an incident light path to the object is reflected along a reflective light path by a reflector affixed to the object. A photo-sensor array in the reflective light path intercepts the reflected light beam and produces samples of the intensity of the reflected image at multiple positions along a line across the array. An imager coupled to the array converts the light samples to representative electrical samples. The resultant light intensity information is provided to an electronic processor which determines a first centroid of the reflected image when the object is at a first location and a second centroid when the object is at a second location, and employs the difference between the first and second centroids to determine the displacement of the object.
摘要翻译：用于感测沿着轴线的第一和第二位置之间物体的线性位移的装置用于感测可以根据诸如温度，压力和旋转运动等条件改变物体的位移的条件。沿着入射光路投射到物体的光束被反射光路通过固定在物体上的反射体反射。反射光路中的光电传感器阵列截取反射光束，并沿着阵列的一条线的多个位置产生反射图像强度的样本。耦合到阵列的成像器将光样本转换成代表性的电样品。所得到的光强度信息被提供给电子处理器，该电子处理器当物体处于第一位置时确定反射图像的第一质心，并且当物体处于第二位置时确定第二质心，并且采用第一和第二质心来确定物体的位移。

2. 再颁专利

USRE35456E Fluoroscopic method with reduced x-ray dosage 失效
标题翻译：荧光检查法减少x射线剂量
公开(公告)号：USRE35456E
公开(公告)日：1997-02-18
申请号：US272067
申请日：1994-07-08
申请人： Fathy F. Yassa , Aiman A. Abdel-Malek , John J. Bloomer , Chukka Srinivas
发明人： Fathy F. Yassa , Aiman A. Abdel-Malek , John J. Bloomer , Chukka Srinivas
IPC分类号： H04N5/32 , H04N7/01 , H04N7/18 , H04N7/46 , H05G1/60 , H05G1/64
CPC分类号： H04N5/32 , H04N19/587 , H04N7/0135 , H05G1/60
摘要： A method of fluoroscopically observing a living creature with reduced x-ray dosage is usable with a video monitor for displaying frames of image samples received during respective ones of frame scan intervals that regularly and successively occur at a display frame rate sufficiently high that brightness flicker is acceptably low to a human observer; an x-ray source that can be gated on for intervals not as long as a display frame; a fluoroscopic camera, including a raster-scanning video camera and a x-ray-to-light conversion apparatus with persistence not appreciably longer than a display frame; and frame filling apparatus for grabbing frames of image samples and interpolating between successively grabbed frames of image samples, when necessary, to generate frames of image samples at said display frame rate. During ones of said successive frame scan intervals, x-ray radiation is directed from the gated x-ray source through the living creature; the x-ray shadow of at least a portion of the living creature is viewed with the fluoroscopic camera; and the frame filling apparatus grabs frames of image samples from the raster-scanning video camera to be stored in frame stores and used as bases from which to compute fill frames of image samples. The frame filling apparatus continuously supplies to the video monitor the frames of image samples it generates at display frame rate.
摘要翻译：用X射线剂量减少的荧光透视观察活体的方法可用于显示在相应的帧扫描间隔期间接收到的图像样本的帧的视频监视器，其以足够高的显示帧速率规则地和连续地出现，使得亮度闪烁为对人类观察者的接受度低; 可以选择不与显示框一样长的X射线源; 荧光摄像机，包括光栅扫描摄像机和X射线到光转换装置，其持久性不比显示帧长得多; 以及帧填充装置，用于抓取图像样本的帧并且在必要时在连续抓取的图像样本帧之间进行内插以以所述显示帧速率生成图像样本帧。在所述连续帧扫描间隔期间，x射线辐射从门控X射线源通过活体引导; 用荧光镜照相机观看至少一部分生物的x射线阴影; 并且帧填充设备从光栅扫描摄像机中抓取图像样本的帧以存储在帧存储中，并且用作从其计算图像样本的填充帧的基础。帧填充装置以显示帧速率连续向视频监视器提供其生成的图像样本的帧。

3. 发明授权

US5025257A Increased performance of digital integrated circuits by processing with multiple-bit-width digits 失效
公开(公告)号：US5025257A
公开(公告)日：1991-06-18
申请号：US482122
申请日：1990-02-20
申请人： Richard I. Hartley , Peter F. Corbett , Fathy F. Yassa
发明人： Richard I. Hartley , Peter F. Corbett , Fathy F. Yassa
IPC分类号： G06F7/52 , H03M9/00
CPC分类号： G06F7/5312 , H03M9/00
摘要： Conversion apparatus is used to convert digital data words to a digit-serial data format wherein digit bit-width is optimal for subsequent processing of the digital data words. Optimization is with regard to throughput efficiency, a measure of integrated circuit performance proportional to throughput rate of integrated circuitry and inversely proportional to the area of that integrated circuitry, comprising processing circuitry and attendant conversion circuitry.

4. 发明授权

US5181033A Digital filter for filtering and decimating delta sigma modulator output signals 失效
标题翻译：用于滤波和抽取Δ-Σ调制器输出信号的数字滤波器
公开(公告)号：US5181033A
公开(公告)日：1993-01-19
申请号：US844032
申请日：1992-03-02
申请人： Fathy F. Yassa , Steven L. Garverick
发明人： Fathy F. Yassa , Steven L. Garverick
IPC分类号： H03H17/02 , H03H17/06
CPC分类号： H03H17/0294 , H03H17/0664
摘要： An oversampled interpolative delta sigma analog-to-digital converter including a delta sigma modulator is provided with a cascade of bit-slice elements at the output of the modulator to form a filter/decimator. Each bit-slice element includes a filter circuit that filters the bit-rate signal in accordance with an arbitrary filter impulse response input signal to provide the converter with a filter characteristic that can be controllably varied without modifying the filter hardware. In each bit-slice element, an adder circuit and a delay circuit decimate the bit-rate signal produced by the delta sigma modulator to provide a digital output signal at a clock cycle rate equal to the Nyquist rate. The filter/decimator also provides encoding of the delta sigma output in 2's complement format.
摘要翻译：包括Δ-Σ调制器的过采样内插Δ-Σ模数转换器在调制器的输出处设置有级联的位片元件，以形成滤波器/抽取器。每个位片元件包括滤波器电路，其根据任意的滤波器脉冲响应输入信号对比特率信号进行滤波，以向转换器提供可以可控地改变的滤波器特征，而不需要修改滤波器硬件。在每个位片元件中，加法器电路和延迟电路抽取由Δ-Σ调制器产生的比特率信号，以等于奈奎斯特速率的时钟周期速率提供数字输出信号。滤波器/抽取器还提供了二进制补码格式的delta西格玛输出的编码。

5. 发明授权

US5124656A Adaptive estimation of phase or delay for both leading and lagging phase shifts 失效
标题翻译：对相位或滞后相移的相位或延迟进行自适应估计
公开(公告)号：US5124656A
公开(公告)日：1992-06-23
申请号：US589355
申请日：1990-09-28
申请人： Fathy F. Yassa , Kenneth B. Welles, II
发明人： Fathy F. Yassa , Kenneth B. Welles, II
IPC分类号： G01R25/00
CPC分类号： G01R25/00
摘要： Apparatus for measuring or compensating for phase or time delay between a reference signal and a desired signal produces an approximate error signal by differentially summing the desired and reference signals. The appoximate error signal is then used, in a feedback loop, to control application of an adaptive delay to each of the reference and desired signals. The total lead or lag difference is represented by the difference between the two delays applied to the reference and desired signals, respectively. The phase or time delay measurement or compensation arrangements may be applied to linear variable differential transformers, synchronous AM detectors, zero crossing detectors and phase locked loops. Variations on this basic technique can yield substantially exact measurement or compensation. The invention is applicable to sampling arrangements including oversampling/decimation or interpolation/decimation to increase compensation accuracy to any desired degree.
摘要翻译：用于测量或补偿参考信号和期望信号之间的相位或时间延迟的装置通过对期望参考信号进行差分求和来产生近似误差信号。然后在反馈环路中使用近似误差信号来控制对每个参考和期望信号的自适应延迟的应用。总引线或滞后差分别由施加到基准信号和期望信号的两个延迟之间的差异表示。相位或时间延迟测量或补偿布置可以应用于线性可变差分变压器，同步AM检测器，过零检测器和锁相环。这种基本技术的变化可以产生实质上精确的测量或补偿。本发明适用于包括过采样/抽取或插值/抽取的采样布置，以将补偿精度提高到任何期望的程度。

6. 发明授权

US10440328B2 Method and apparatus to synchronize personalized co-cast content with user viewing habits 有权
公开(公告)号：US10440328B2
公开(公告)日：2019-10-08
申请号：US12080825
申请日：2008-04-03
申请人： Fathy F. Yassa
发明人： Fathy F. Yassa
IPC分类号： H04N7/10 , H04N7/173 , H04N21/258 , H04N21/2668 , H04N21/442 , H04N21/462 , H04N21/61 , H04N21/658 , H04N21/81 , H04N7/088
摘要： A method and apparatus designed to permit content providers to insert personalized content into a television signal based upon the user preferences or viewing habits.

7. 发明授权

US5034908A Digit-serial transversal filters 失效
标题翻译：数字串行横向滤波器
公开(公告)号：US5034908A
公开(公告)日：1991-07-23
申请号：US504503
申请日：1990-04-02
申请人： Richard I. Hartley , Peter F. Corbett , Fathy F. Yassa , Sharbel E. Noujaim
发明人： Richard I. Hartley , Peter F. Corbett , Fathy F. Yassa , Sharbel E. Noujaim
IPC分类号： G06F7/52 , H03M9/00
CPC分类号： G06F7/5312 , H03M9/00
摘要： One type of transversal filter using digit-serial signals in its operation comprises a to-digit-serial converter for converting a succession of input data words received at its input port each to a respective succession of m-bit-wide digits supplied from its output port in order of progressively greater significance, m being a positive plural integer; a clocked delay line having an input tap connected for responding to the m-bit-wide digits supplied from the output port of the to-digit-serial converter and having at least one further tap for supplying a respective tap signal; and means for performing a weighted summation of the input signal to the clocked delay line and each tap signal from the clocked delay line, to generate a filter response in digit-serial format. Another type of transversal filter, which uses digit-serial signals in its operation, comprises a plurality, p in number, of parallel-to-digit-serial converters, each for generating a respective m-bit-wide digit-serial data stream by converting n-parallel-bit words in an input signal to the digital filter, m being a positive integer and n being the product of m and p; a plurality of tapped delay lines having respective input taps connected from respective ones of said parallel-to-digit-serial converters and each having at least one further tap; means for generating p different phases of filter response in digit-serial form by weighting and summing digital signals taken from respective taps on ones of the p tapped delay lines; and p digit-serial-to-parallel converters for converting, on a cyclic basis, the different phases of filter response to parallel-bit words in an output signal from the digital filter.
摘要翻译：在其操作中使用数字串行信号的一种类型的横向滤波器包括一个数字串行转换器，用于将在其输入端口处接收的一系列输入数据字转换成从其输出端提供的各个相继的m位宽数字端口按顺序逐渐显现，m为正整数; 时钟延迟线具有连接的输入抽头，用于响应从位数字串行转换器的输出端口提供的m位宽数字，并具有用于提供相应抽头信号的至少一个另外的抽头; 以及用于对来自时钟延迟线的时钟延迟线和每个抽头信号执行输入信号的加权求和的装置，以产生数字串行格式的滤波器响应。在其操作中使用数字串行信号的另一种类型的横向滤波器包括多个并行数字串行转换器，每个转换器用于通过以下步骤产生相应的m位宽数字串行数据流：将输入信号中的n个并行位字转换为数字滤波器，m是正整数，n是m和p的乘积; 多个抽头延迟线，其具有从相应的所述并行到数字串行转换器连接的各个输入抽头，并且每个具有至少一个另外的抽头; 用于以数字串行形式产生滤波器响应的p个不同相位的装置，用于通过对从所述p个抽头延迟线中的一个上的各个抽头获得的数字信号进行加权和求和; 和p位串行到并行转换器，用于在来自数字滤波器的输出信号中循环地将滤波器响应的不同相位转换成并行位字。

8. 发明授权

US5493598A Fluoroscopic imager with frame-filling apparatus 失效
公开(公告)号：US5493598A
公开(公告)日：1996-02-20
申请号：US402411
申请日：1995-03-10
申请人： Fathy F. Yassa , Aiman A. Abdel-Malek , John J. Bloomer
发明人： Fathy F. Yassa , Aiman A. Abdel-Malek , John J. Bloomer
IPC分类号： H04N5/32 , H05G1/60 , H05G1/64
CPC分类号： H04N5/32 , H05G1/60 , Y10S378/901
摘要： A fluoroscopic imager for observing a living creature with reduced x-ray dosage uses a video monitor for displaying frames of image samples received during respective ones of frame scan intervals that regularly and successively occur at a display frame rate sufficiently high that brightness flicker is acceptably low to a human observer; an x-ray source that can be gated on for intervals not as long as a display frame; and a fluoroscopic camera, including a raster-scanning video camera and x-ray-to-light conversion apparatus with persistence not appreciably longer than a display frame and frame-filling apparatus. Especially during purely diagnostic procedures, the frame-filling apparatus generates a continuous succession of frames of image samples at the display frame rate by interpolating between successively grabbed frames of image samples. During procedures in which interpolating between successively grabbed frames of image samples introduces unacceptable delay in the observed image, the frame-filling apparatus generates the continuous succession of frames of image samples by extrapolating from each most recently grabbed frame.

9. 发明授权

US5016011A Increased performance of digital integrated circuits by processing with multiple-bit-width digits 失效
标题翻译：数字集成电路通过多位数位处理提高性能
公开(公告)号：US5016011A
公开(公告)日：1991-05-14
申请号：US482121
申请日：1990-02-20
申请人： Richard I. Hartley , Peter F. Corbett , Fathy F. Yassa
发明人： Richard I. Hartley , Peter F. Corbett , Fathy F. Yassa
IPC分类号： G06F7/52 , H03M9/00
CPC分类号： G06F7/5312 , H03M9/00
摘要： Conversion apparatus is used to convert digital data words to a digit-serial data format wherein digit bit-width is optimal for subsequent processing of the digital data words. Optimization is with regard to throughput efficiency, a measure of integrated circuit performance proportional to throughput rate of integrated circuitry and inversely proportional to the area of that integrated circuitry, comprising processing circuitry and attendant conversion circuitry.
摘要翻译：转换装置用于将数字数据字转换为数字串行数据格式，其中数字位宽对于数字数据字的后续处理是最佳的。关于吞吐量效率的优化是与集成电路的吞吐率成比例的集成电路性能的量度，并且与集成电路的面积成反比，其包括处理电路和伴随的转换电路。

10. 发明授权

US4888719A Sampled-data sine wave and cosine wave generation by accumulation 失效
标题翻译：通过积累采样数据正弦波和余弦波生成
公开(公告)号：US4888719A
公开(公告)日：1989-12-19
申请号：US222480
申请日：1988-07-21
申请人： Fathy F. Yassa
发明人： Fathy F. Yassa
IPC分类号： G06F7/548
CPC分类号： G06F7/548
摘要： Sine and cosine waves are simultaneously accumulated in accordance with the following equations in apparatus embodying the invention.M sin .theta.=[M sin (.theta.-.delta..theta.)] cos .delta..theta.+[M cos (.theta.-.delta..theta.)] sin .delta..theta.M cos .theta.=[M cos (.theta.-.delta..theta.)] cos .delta..theta.-]M sin (.theta.-.delta..theta.)] sin .delta..theta.Here .delta..theta. is an incremental angle between successive steps of accumulation.
摘要翻译：在体现本发明的装置中，根据下列等式同时累积正弦和余弦波。 Msinθ= [M sin（θ-δθ）]cosδθ+ [M cos（θ-δθ）] sin deltaθMcosθ= [M cos（θ-θθ）] cos M sin（θ-δtheta）] sin deltaθ这里delta theta是累积的连续步骤之间的增量角。

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