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1.发明授权公开(公告)号：US08988266B2
公开(公告)日：2015-03-24
申请号：US14194181
申请日：2014-02-28
发明人： Janakiraman S , Udayan Dasgupta , Ganesan Thiagarajan , Abhijit A. Patki , Madhulatha Bonu , Venugopal Gopinathan
CPC分类号： H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
摘要： A method, comprising: receiving an analog input; determining an upper outer rail and a lower outer rail as polling values to be used by voltage comparators; blanking at least three comparators; determining which two of the at least three comparators are closest to the input analog voltage levels; defining the two comparators which are closest to the analog input signal to be the next comparators of the next sampling process; assigning a remaining comparator at a voltage level in between the new top and bottom voltage levels; enabling the outer rails, but blanking the inner rail; progressively narrowing down the voltage range spanned by the two outer comparators; and generating a 2-tuple value of an asynchronous voltage comparator crossing.
摘要翻译： 一种方法，包括：接收模拟输入; 确定上部外轨道和下部外部轨道作为要由电压比较器使用的轮询值; 至少阻止三位比较人; 确定所述至少三个比较器中的哪两个最接近所述输入模拟电压电平; 将最接近模拟输入信号的两个比较器定义为下一个采样过程的下一个比较器; 将剩余比较器分配在新的顶部和底部电压电平之间的电压电平; 使得外轨能够消除内轨; 逐渐缩小两个外部比较器跨越的电压范围; 并产生异步电压比较器杂交的2元组值。
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2.发明授权公开(公告)号：US09100035B2
公开(公告)日：2015-08-04
申请号：US14194208
申请日：2014-02-28
发明人： Udayan Dasgupta , Abhijit A. Patki , Ganesan Thiagarajan , Janakiraman S , Madhulatha Bonu , Venugopal Gopinathan
CPC分类号： H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
摘要： A snapout calculator, and wherein the snapout calculator determines where the reference levels for the various comparators shall be placed after each asynchronous sample is generated.
摘要翻译： 跳槽计算器，并且其中，所述卡扣计算器确定在每个异步样本产生之后将放置各种比较器的参考电平。
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3.发明授权公开(公告)号：US09077359B2
公开(公告)日：2015-07-07
申请号：US14194264
申请日：2014-02-28
CPC分类号： H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
摘要： A method, comprising: selecting two Two-Tuples before and two after a selected synchronous ADC conversion point; calculating the coefficients of a third order polynomial based on the value of the previous time asynchronous sample, the time differences between each of the asynchronous samples surrounding the selected sample, and the three linear slopes of the line segments between the two points before and the points after the selected synchronous sample point, including the slope of the selected point; evaluating the third order polynomial at the synchronous time instant; generating the synchronous ADC value based on this calculation; and using the ADC value as the desired voltage level of the synchronous sample, wherein the synchronous ADC value is generated based on this calculation.
摘要翻译： 一种方法，包括：在选择的同步ADC转换点之前和之后选择两个二元组; 基于先前时间异步样本的值计算三阶多项式的系数，围绕所选样本的每个异步样本之间的时间差和之前两点之间的线段的三个线性斜率与点之间 选定同步采样点后，包括所选点的斜率; 在同步时刻评估三阶多项式; 基于此计算产生同步ADC值; 并且使用ADC值作为同步采样的期望电压电平，其中基于该计算生成同步ADC值。
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公开(公告)号：US20140247176A1
公开(公告)日：2014-09-04
申请号：US14194304
申请日：2014-02-28
发明人： Janakiraman S , Udayan Dasgupta , Ganesan Thiagarajan , Abhijit A. Patki , Madhulatha Bonu , Venugopal Gopinathan
IPC分类号： H03M1/18
CPC分类号： H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
摘要： An apparatus, comprising: an analog to digital converter including: a clipping detector; and a post-processor, wherein the post processor generates synchronous values of clipped data based on non-clipped values of non-clipped data.
摘要翻译： 一种装置，包括：模数转换器，包括：限幅检测器; 以及后处理器，其中所述后处理器基于未剪切数据的未剪切值来生成剪切数据的同步值。
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公开(公告)号：US20140247173A1
公开(公告)日：2014-09-04
申请号：US14194236
申请日：2014-02-28
CPC分类号： H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
摘要： A method, comprising: selecting three Two-Tuples before and three after a selected synchronous ADC conversion point; calculating the coefficients of a third order polynomial based on the value of the previous time asynchronous sample, the time difference between the asynchronous samples surrounding the selected sample, and the five linear slopes of the line segments between the three points before and the points after the selected synchronous sample point, including the slope of the selected point; evaluating the third order polynomial at the synchronous time instant; generating the synchronous ADC value based on this calculation; and using the ADC value as the desired voltage level of the synchronous sample, wherein the synchronous ADC value is generated based on this calculation.
摘要翻译： 一种方法，包括：在所选择的同步ADC转换点之前和之后选择三个二元组; 基于先前时间异步样本的值计算三次多项式的系数，周围所选样本的异步样本之间的时间差和之前三点之间的线段的五个线性斜率 选择同步采样点，包括所选点的斜率; 在同步时刻评估三阶多项式; 基于此计算产生同步ADC值; 并且使用ADC值作为同步采样的期望电压电平，其中基于该计算生成同步ADC值。
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公开(公告)号：US20140247172A1
公开(公告)日：2014-09-04
申请号：US14194208
申请日：2014-02-28
CPC分类号： H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
摘要： A snapout calculator, and wherein the snapout calculator determines where the reference levels for the various comparators shall be placed after each asynchronous sample is generated.
摘要翻译： 跳槽计算器，并且其中，所述卡扣计算器确定在每个异步样本产生之后将放置各种比较器的参考电平。
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公开(公告)号：US20160066890A1
公开(公告)日：2016-03-10
申请号：US14944759
申请日：2015-11-18
发明人： Udayan Dasgupta , David P. Magee , Murtaza Ali
CPC分类号： G01S15/8981 , A61B8/06 , A61B8/13 , A61B8/461 , A61B8/488 , A61B8/5207 , G01S7/52095 , G01S15/8979
摘要： Methods for color Doppler imaging in an ultrasound imaging system are disclosed herein. Ultrasound radio frequency RF data is demodulated using a nested processing loop including an inner loop and an outer loop. A plurality of Wall filter coefficients are fetched from ultrasound imaging system memory in a single memory access cycle. The plurality Wall filter coefficients are applied to a plurality of complex ultrasound data values in a single execution cycle. The Wall filtered ultrasound data are provided to a flow estimator.
摘要翻译： 本文公开了超声成像系统中彩色多普勒成像的方法。 使用包括内环和外环的嵌套处理环来解调超声射频RF数据。 在单个存储器访问周期中，从超声成像系统存储器中获取多个壁滤波器系数。 多个Wall滤波器系数在单个执行周期中被应用于多个复数超声数据值。 将经过滤波的超声波数据提供给流量估计器。
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8.发明授权Asynchronous to synchronous sampling using an augmented least squares solver 有权使用增强最小二乘解算器进行异步到同步采样公开(公告)号：US08981984B2
公开(公告)日：2015-03-17
申请号：US14194281
申请日：2014-02-28
CPC分类号： H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
摘要： A method, comprising: receiving a plurality of 2-tuples of asynchronously sampled inputs at an asynchronous to synchronous reconstructor; performing a coarse asynchronous to synchronous conversion using the plurality of 2-tuples to generate a plurality of low precision synchronous outputs; generating a high precision synchronous output, z0, using a plurality of asynchronous 2-tuples, low precision synchronous outputs after it, and its own high precision outputs from previous steps; calculating c0 and c−1 by summing future low precision outputs and the past high precision outputs after they are weighted with the appropriate windowed sinc. values and then subtracted from appropriate asynchronous samples; calculating, the four quantities “s−11”, “s01”, “s00” and “s−10” based on particular values of the windowed sinc. function; and using c0, c−1, s−11, s01, s00 and s−10, the high precision synchronous output of interest, z0 is generated.
摘要翻译： 一种方法，包括：在异步同步重构器处接收多个异步采样输入的2元组; 使用所述多个2元组执行粗略的异步到同步转换，以产生多个低精度同步输出; 使用多个异步2元组，其后的低精度同步输出以及自己的高精度输出从前面的步骤产生高精度同步输出z0; 通过将未来的低精度输出和过去的高精度输出相加后，使用适当的加窗sinc来计算c0和c-1。 值，然后从适当的异步样本中减去; 基于窗口的sinc的特定值计算四个量“s-11”，“s01”，“s00”和“s-10”。 功能; 并使用c0，c-1，s-11，s01，s00和s-10，生成高精度的同步输出z0。
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9.发明申请公开(公告)号：US20140247175A1
公开(公告)日：2014-09-04
申请号：US14194281
申请日：2014-02-28
发明人： Udayan Dasgupta , Janakiraman S , Ganesan Thiagarajan , Abhijit A. Patki , Madhulatha Bonu , Venugopal Gopinathan
CPC分类号： H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
摘要： A method, comprising: receiving a plurality of 2-tuples of asynchronously sampled inputs at an asynchronous to synchronous reconstructor; performing a coarse asynchronous to synchronous conversion using the plurality of 2-tuples to generate a plurality of low precision synchronous outputs; generating a high precision synchronous output, z0, using a plurality of asynchronous 2-tuples, low precision synchronous outputs after it, and its own high precision outputs from previous steps; calculating c0 and c−1 by summing future low precision outputs and the past high precision outputs after they are weighted with the appropriate windowed sinc. values and then subtracted from appropriate asynchronous samples; calculating, the four quantities “s−11”, “s01”, “s00” and “s−10” based on particular values of the windowed sinc. function; and using c0, c−1, s−11, s01, s00 and s−10, the high precision synchronous output of interest, z0 is generated.
摘要翻译： 一种方法，包括：在异步同步重构器处接收多个异步采样输入的2元组; 使用所述多个2元组执行粗略的异步到同步转换，以产生多个低精度同步输出; 使用多个异步2元组，其后的低精度同步输出以及自己的高精度输出从前面的步骤产生高精度同步输出z0; 通过将未来的低精度输出和过去的高精度输出相加后，使用适当的加窗sinc来计算c0和c-1。 值，然后从适当的异步采样中减去; 基于窗口的sinc的特定值计算四个量“s-11”，“s01”，“s00”和“s-10”。 功能; 并使用c0，c-1，s-11，s01，s00和s-10，生成高精度的同步输出z0。
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10.发明申请公开(公告)号：US20140247171A1
公开(公告)日：2014-09-04
申请号：US14194181
申请日：2014-02-28
发明人： Janakiraman S. , Udayan Dasgupta , Ganesan Thiagarajan , Abhijit A. Patki , Madhulatha Bonu , Venugopal Gopinathan
CPC分类号： H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
摘要： A method, comprising: receiving an analog input; determining an upper outer rail and a lower outer rail as polling values to be used by voltage comparators; blanking at least three comparators; determining which two of the at least three comparators are closest to the input analog voltage levels; defining the two comparators which are closest to the analog input signal to be the next comparators of the next sampling process; assigning a remaining comparator at a voltage level in between the new top and bottom voltage levels; enabling the outer rails, but blanking the inner rail; progressively narrowing down the voltage range spanned by the two outer comparators; and generating a 2-tuple value of an asynchronous voltage comparator crossing.
摘要翻译： 一种方法，包括：接收模拟输入; 确定上部外轨道和下部外部轨道作为要由电压比较器使用的轮询值; 至少阻止三位比较人; 确定所述至少三个比较器中的哪两个最接近所述输入模拟电压电平; 将最接近模拟输入信号的两个比较器定义为下一个采样过程的下一个比较器; 将剩余比较器分配在新的顶部和底部电压电平之间的电压电平; 使得外轨能够消除内轨; 逐渐缩小两个外部比较器跨越的电压范围; 并产生异步电压比较器杂交的2元组值。
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