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    Asynchronous sampling using dynamically configurable voltage polling levels
    1.
    发明授权
    Asynchronous sampling using dynamically configurable voltage polling levels 有权
    使用动态可配置的电压轮询级别进行异步采样

    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

    IPC: H03M1/12 ,  H03M1/08 ,  H03M1/18

    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。

    ASYNCHRONOUS TO SYNCHRONOUS SAMPLING USING AN AUGMENTED LEAST SQUARES SOLVER
    2.
    发明申请
    ASYNCHRONOUS TO SYNCHRONOUS SAMPLING USING AN AUGMENTED LEAST SQUARES SOLVER 有权
    异步采样采用最小二乘解算器同步采样

    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

    IPC: H03M1/12 ,  H03M1/08

    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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