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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
Applicant: Texas Instruments Incorporated
Inventor： Janakiraman S , Udayan Dasgupta , Ganesan Thiagarajan , Abhijit A. Patki , Madhulatha Bonu , Venugopal Gopinathan
CPC classification number: H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
Abstract: 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.
Abstract translation: 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
Applicant: Texas Instruments Incorporated
Inventor： Udayan Dasgupta , Ganesan Thiagarajan , Abhijit A. Patki
CPC classification number: H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
Abstract: 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.
Abstract translation: 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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3.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
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Udayan Dasgupta , Janakiraman S , Ganesan Thiagarajan , Abhijit A. Patki , Madhulatha Bonu , Venugopal Gopinathan
CPC classification number: H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
Abstract: 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.
Abstract translation: 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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4.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
Applicant: Texas Instruments Incorporated
Inventor： Janakiraman S. , Udayan Dasgupta , Ganesan Thiagarajan , Abhijit A. Patki , Madhulatha Bonu , Venugopal Gopinathan
CPC classification number: H03M1/125 , H03M1/08 , H03M1/0836 , H03M1/0845 , H03M1/0854 , H03M1/089 , H03M1/124 , H03M1/1265 , H03M1/186 , H03M1/36
Abstract: 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.
Abstract translation: 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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公开(公告)号：US09778327B2
公开(公告)日：2017-10-03
申请号：US14848731
申请日：2015-09-09
Applicant: Texas Instruments Incorporated
Inventor： Ganesan Thiagarajan , Arup Polley , Terry Lee Sculley
CPC classification number: G01R33/093 , G01R33/0035
Abstract: Methods and apparatus for magnetic sensors and integrated calibration. In an example arrangement, a system includes a magnetic sensor configured to output a signal corresponding to magnetic fields; a calibration trace disposed proximal to the magnetic sensor; a controlled current source coupled to the calibration trace and configured to output a current resulting in a magnetic field output from the calibration trace; and a comparator coupled to the output signal from the magnetic sensor and to an expected signal. In the example arrangement, the comparator outputs a signal indicating whether the output signal from the magnetic sensor corresponds to the expected signal. Methods are also disclosed.
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Patent Agency Ranking
6.发明授权公开(公告)号：US09281832B1
公开(公告)日：2016-03-08
申请号：US14587377
申请日：2014-12-31
Applicant: Texas Instruments Incorporated
Inventor： Ganesan Thiagarajan
CPC classification number: H03M1/127 , G01R19/2509 , H03M1/0629 , H03M1/12
Abstract: A bandwidth estimator circuit for an analog to digital converter. The bandwidth estimator computes a bandwidth estimate of an analog signal and includes: an amplitude averaging block configured to determine an average change in amplitude of N samples, a delta time block configured to determine a minimum time difference; a peak voltage block configured to determine the maximum magnitude; a peak to root mean square block configured to determine a ratio of a peak voltage to the root mean square of the magnitude; a bandwidth estimator block configured to compute a product of a ratio of the average change in amplitude to the minimum time difference, multiplied by a ratio of the peak voltage to the root mean square, squared, to the peak voltage multiplied by a constant; and a parameter adjustment circuit configured to modify sampler parameters controlling an analog signal sampling rate. Methods are described.
Abstract translation: 用于模数转换器的带宽估计器电路。 带宽估计器计算模拟信号的带宽估计，并且包括：被配置为确定N个采样的幅度的平均变化的幅度平均块，被配置为确定最小时间差的增量时间块; 配置为确定最大幅度的峰值电压块; 配置为确定峰值电压与幅度的均方根的比率的峰值到均方根块; 带宽估计器块，其被配置为计算幅度的平均变化与最小时间差的比率乘以所述峰值电压与所述均方根的平方和所述峰值电压乘以常数的乘积的乘积; 以及参数调整电路，被配置为修改控制模拟信号采样率的采样器参数。 描述方法。
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公开(公告)号：US10748557B2
公开(公告)日：2020-08-18
申请号：US16460651
申请日：2019-07-02
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ganesan Thiagarajan , Tarkesh Pande , David Patrick Magee
Abstract: In described examples, a method for detecting voice activity includes: receiving a first input signal containing noise; sampling the first input signal to form noise samples; determining a first value corresponding to the noise samples; subsequently receiving a second input signal; sampling the second input signal to form second signal samples; determining a second value corresponding to the second signal samples; forming a ratio of the second value to the first value; comparing the ratio to a predetermined threshold value; and responsive to the comparing, indicating whether voice activity is detected in the second input signal.
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公开(公告)号：US10339962B2
公开(公告)日：2019-07-02
申请号：US15485165
申请日：2017-04-11
Applicant: Texas Instruments Incorporated
Inventor： Ganesan Thiagarajan , Tarkesh Pande , David Patrick Magee
Abstract: In described examples, a method for detecting voice activity includes: receiving a first input signal containing noise; sampling the first input signal to form noise samples; determining a first value corresponding to the noise samples; subsequently receiving a second input signal; sampling the second input signal to form second signal samples; determining a second value corresponding to the second signal samples; forming a ratio of the second value to the first value; comparing the ratio to a predetermined threshold value; and responsive to the comparing, indicating whether voice activity is detected in the second input signal.
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公开(公告)号：US20180293998A1
公开(公告)日：2018-10-11
申请号：US15485165
申请日：2017-04-11
Applicant: Texas Instruments Incorporated
Inventor： Ganesan Thiagarajan , Tarkesh Pande , David Patrick Magee
CPC classification number: G10L25/84 , G10L15/00 , G10L25/09 , G10L25/21 , G10L2025/783
Abstract: In described examples, a method for detecting voice activity includes: receiving a first input signal containing noise; sampling the first input signal to form noise samples; determining a first value corresponding to the noise samples; subsequently receiving a second input signal; sampling the second input signal to form second signal samples; determining a second value corresponding to the second signal samples; forming a ratio of the second value to the first value; comparing the ratio to a predetermined threshold value; and responsive to the comparing, indicating whether voice activity is detected in the second input signal.
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10.发明申请Methods and Apparatus for Magnetic Sensor with Integrated Calibration Mechanism 有权具有集成校准机制的磁传感器的方法和装置公开(公告)号：US20170067980A1
公开(公告)日：2017-03-09
申请号：US14848731
申请日：2015-09-09
Applicant: Texas Instruments Incorporated
Inventor： Ganesan Thiagarajan , Arup Polley , Terry Lee Sculley
CPC classification number: G01R33/093 , G01R33/0035
Abstract: Methods and apparatus for magnetic sensors and integrated calibration. In an example arrangement, a system includes a magnetic sensor configured to output a signal corresponding to magnetic fields; a calibration trace disposed proximal to the magnetic sensor; a controlled current source coupled to the calibration trace and configured to output a current resulting in a magnetic field output from the calibration trace; and a comparator coupled to the output signal from the magnetic sensor and to an expected signal. In the example arrangement, the comparator outputs a signal indicating whether the output signal from the magnetic sensor corresponds to the expected signal. Methods are also disclosed.
Abstract translation: 磁传感器和集成校准的方法和装置。 在一个示例性配置中，系统包括：一个磁传感器，被配置为输出对应于磁场的信号; 设置在所述磁传感器附近的校准轨迹; 耦合到所述校准轨迹并被配置为输出导致从所述校准轨迹输出的磁场的电流的受控电流源; 以及耦合到来自磁传感器的输出信号和预期信号的比较器。 在该示例性配置中，比较器输出指示来自磁传感器的输出信号是否对应于预期信号的信号。 还公开了方法。
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