公开(公告)号：US11336194B1

公开(公告)日：2022-05-17

申请号：US17221905

申请日：2021-04-05

申请人： Vikram Singh ,  Ankur Bal ,  Vineet Mehta ,  Jitender Singh

发明人： Vikram Singh ,  Ankur Bal ,  Vineet Mehta ,  Jitender Singh

IPC分类号： H02M7/42 ,  H02M3/335 ,  H02M1/12

摘要： Disclosed herein is a DC-AC converter, in accordance with some embodiments. Accordingly, the DC-AC converter comprises a transformer, a pulse generator, a pulse modulator, a switching element, and an analog low pass filtering stage. Further, the pulse generator is configured for generating pulses characterized by a pulse frequency. Further, the pulse modulator is configured for generating a pulse density modulated signal based on modulating the pulses using a sine wave signal of a fundamental frequency. Further, the switching element is connected in series with a primary winding of the transformer. Further, the switching element is configured to be switched between an on state and an off state based on the pulse density modulated signal. Further, the analog low pass filtering stage is configured for generating an AC voltage of the fundamental frequency based on attenuating higher frequency components of an unfiltered AC voltage at a secondary winding of the transformer.

公开(公告)号：US09225321B2

公开(公告)日：2015-12-29

申请号：US13172647

申请日：2011-06-29

申请人： Ankur Bal ,  Anupam Jain

发明人： Ankur Bal ,  Anupam Jain

IPC分类号： G06F1/12 ,  G06F1/00 ,  H03K5/135 ,  H04L7/02

CPC分类号： H03K5/135 ,  G06F1/12 ,  H04L7/0045 ,  H04L7/02

摘要： Signal synchronizing systems and methods are disclosed. A signal synchronizing system includes a sequential logic circuit to receive an input signal and to generate a plurality of intermediate signals from the input signal based on a clock signal. A logic circuit combines the intermediate signals to generate an output signal. A signal receiver includes a microcontroller and a signal synchronizer coupled to the microcontroller. The signal synchronizer includes a sequential logic circuit to receive an input signal from a transmitter and to generate a plurality of intermediate signals from the received input signal based on a clock signal. A logic circuit combines the intermediate signals to generate an output signal.

摘要翻译： 公开了信号同步系统和方法。 信号同步系统包括顺序逻辑电路，用于接收输入信号并根据时钟信号从输入信号产生多个中间信号。 逻辑电路组合中间信号以产生输出信号。 信号接收机包括耦合到微控制器的微控制器和信号同步器。 信号同步器包括顺序逻辑电路，用于接收来自发射机的输入信号，并且基于时钟信号从所接收的输入信号产生多个中间信号。 逻辑电路组合中间信号以产生输出信号。

公开(公告)号：US20110279292A1

公开(公告)日：2011-11-17

申请号：US12842311

申请日：2010-07-23

申请人： Rakhel Kumar Parida ,  Ankur Bal ,  Anil Kumar ,  Anupam Jain

发明人： Rakhel Kumar Parida ,  Ankur Bal ,  Anil Kumar ,  Anupam Jain

IPC分类号： H03M7/12 ,  H03M1/66

CPC分类号： H03M7/12 ,  H03M1/0665 ,  H03M1/0673 ,  H03M1/74 ,  H03M7/14

摘要： A dynamic element matching (DEM) scheme is implemented in a crawling code generator for converting a b-bit binary input code into a (2b−1)-bit digital output code. A random generator determines for every conversion step a direction. A decimal difference between the current and previous binary input is calculated. The new crawling output code is determined based on the previous crawling output code, the direction and the decimal difference. The DEM scheme is used in a digital-to-analog converter such that the crawling output code switches digital-to-analog converting elements that output analog signals that are then summed to be the final analog signal.

摘要翻译： 用于将b位二进制输入代码转换为（2b-1）位数字输出代码的爬行码生成器中实现动态元素匹配（DEM）方案。 随机生成器确定每个转换步骤一个方向。 计算当前和前一个二进制输入之间的十进制差值。 新的爬行输出代码基于先前的爬行输出代码，方向和小数差来确定。 DEM方案用于数模转换器，使得爬行输出码切换输出模拟信号的数模转换元件，然后将模拟信号相加为最终的模拟信号。

公开(公告)号：US06646465B2

公开(公告)日：2003-11-11

申请号：US10072461

申请日：2002-02-07

申请人： Ankur Bal

发明人： Ankur Bal

IPC分类号： G11C1900

CPC分类号： H03K19/17748 ,  H03K19/17728 ,  H03K19/17736

摘要： A programmable logic device may include a programmable interconnect structure and a plurality of configurable logic elements including data latches interconnected by the interconnect structure. At least one of the configurable logic elements may be configurable as both a shift register and a lookup table. Also, the shift register may be enabled to operate as a bi-directional shift register by the inclusion of a first circuit for configuring the data latches either as series-connected inverters during a shift operation or as data latches after each shift operation. A second circuit for selecting a direction of shifting may also be included, as well as a third circuit for supplying data to the input of the shift register as determined by the direction of shifting.

公开(公告)号：US08738679B2

公开(公告)日：2014-05-27

申请号：US12565596

申请日：2009-09-23

申请人： Rakhel Kumar Parida ,  Ankur Bal ,  Anupam Jain

发明人： Rakhel Kumar Parida ,  Ankur Bal ,  Anupam Jain

IPC分类号： G06F17/17 ,  H03H17/06

CPC分类号： H03H17/0664 ,  H03H17/0282 ,  H03H17/0657 ,  H03H17/0671

摘要： An offset free sinc interpolating filter includes differentiators operating at a first sampling frequency, integrators operating at a second sampling frequency and one or more coefficient multipliers. The coefficient multipliers multiply a received value with a constant coefficient value to generate an output value. The differentiators, integrators and coefficient multipliers can be operatively coupled to each other, either directly or through other components such as adders and delay elements, or by a combination of the two. In operation, an input signal is provided to the sinc interpolating filter at the first sampling frequency. The input signal is processed by the differentiators, integrators and coefficient multipliers to generate an output signal at the second sampling frequency. Once the output signal is generated, the integrators are reset before the next input cycle begins.

摘要翻译： 无偏移的正弦内插滤波器包括以第一采样频率工作的微分器，以第二采样频率工作的积分器和一个或多个系数乘法器。 系数乘法器将接收到的值与常数系数值相乘以产生输出值。 微分器，积分器和系数乘法器可以直接地或通过其他部件（例如加法器和延迟元件）或两者的组合来可操作地耦合。 在操作中，输入信号以第一采样频率提供给正弦内插滤波器。 输入信号由微分器，积分器和系数乘法器处理，以产生第二采样频率的输出信号。 产生输出信号后，积分器在下一个输入周期开始之前被复位。

公开(公告)号：US08645445B2

公开(公告)日：2014-02-04

申请号：US12614004

申请日：2009-11-06

申请人： Ankur Bal ,  Anupam Jain

发明人： Ankur Bal ,  Anupam Jain

IPC分类号： G06F17/17

CPC分类号： H03H17/0286 ,  H03H17/0671

摘要： The invention may provide a method and filter block for compensating droop in a frequency response of a signal. The filter block may include a decimator, which decimates a high frequency input signal to a set frequency output signal. The set frequency can be, for example, the Nyquist frequency for the input signal. Further, the filter block may include a droop compensator that compensates the droop in the frequency response of the output signal from the decimator. The droop compensator may be made using recursive filters, as opposed to large tap FIR filters, which may result in less memory consumption and decreased power consumption.

摘要翻译： 本发明可以提供一种用于在信号的频率响应中补偿下降的方法和滤波器块。 滤波器块可以包括抽取器，其将高频输入信号抽取到设定频率输出信号。 设定频率可以是例如输入信号的奈奎斯特频率。 此外，滤波器块可以包括下降补偿器，其补偿来自抽取器的输出信号的频率响应中的下降。 下降补偿器可以使用递归滤波器制造，而不是大抽头FIR滤波器，这可能导致较少的存储器消耗和降低的功耗。

公开(公告)号：US08159381B2

公开(公告)日：2012-04-17

申请号：US12842311

申请日：2010-07-23

申请人： Rakhel Kumar Parida ,  Ankur Bal ,  Anil Kumar ,  Anupam Jain

发明人： Rakhel Kumar Parida ,  Ankur Bal ,  Anil Kumar ,  Anupam Jain

IPC分类号： H03M1/66

CPC分类号： H03M7/12 ,  H03M1/0665 ,  H03M1/0673 ,  H03M1/74 ,  H03M7/14

摘要： A dynamic element matching (DEM) scheme is implemented in a crawling code generator for converting a b-bit binary input code into a (2b−1)-bit digital output code. A random generator determines for every conversion step a direction. A decimal difference between the current and previous binary input is calculated. The new crawling output code is determined based on the previous crawling output code, the direction and the decimal difference. The DEM scheme is used in a digital-to-analog converter such that the crawling output code switches digital-to-analog converting elements that output analog signals that are then summed to be the final analog signal.

摘要翻译： 用于将b位二进制输入代码转换为（2b-1）位数字输出代码的爬行码生成器中实现动态元素匹配（DEM）方案。 随机生成器确定每个转换步骤一个方向。 计算当前和前一个二进制输入之间的十进制差值。 新的爬行输出代码基于先前的爬行输出代码，方向和小数差来确定。 DEM方案用于数模转换器，使得爬行输出码切换输出模拟信号的数模转换元件，然后将模拟信号相加为最终的模拟信号。

公开(公告)号：US07038489B2

公开(公告)日：2006-05-02

申请号：US10172355

申请日：2002-06-14

申请人： Ankur Bal

发明人： Ankur Bal

IPC分类号： H01L25/00

CPC分类号： H03K19/17728

摘要： A system for reducing the number of programmable architecture elements in a look-up table required for implementing Boolean functions or operations that are identical or logically equivalent is provided. The system may include a single set of storage elements connected to the inputs of multiple decoders, and the storage elements may be concurrently accessed by the decoders to provide simultaneous multiple outputs thereto.

公开(公告)号：US06624771B2

公开(公告)日：2003-09-23

申请号：US10145390

申请日：2002-05-14

申请人： Ankur Bal

发明人： Ankur Bal

IPC分类号： H03M700

CPC分类号： H03K19/17728

摘要： A look-up table circuit includes address decoder circuitry that includes circuitry for utilizing the address decoder circuitry for producing secondary functions concurrently with operation of the address decoding operations. This eliminates or reduces additional circuitry required for generating the secondary functions.

摘要翻译： 查找表电路包括地址解码器电路，其包括用于利用地址解码器电路与地址解码操作的操作同时产生辅助功能的电路。 这消除或减少了生成次要功能所需的附加电路。

公开(公告)号：USRE41561E1

公开(公告)日：2010-08-24

申请号：US12110205

申请日：2008-04-25

申请人： Ankur Bal

发明人： Ankur Bal

IPC分类号： H01L25/00

CPC分类号： H03K19/17728

摘要： A system for reducing the number of programmable architecture elements in a look-up table required for implementing Boolean functions or operations that are identical or logically equivalent is provided. The system may include a single set of storage elements connected to the inputs of multiple decoders, and the storage elements may be concurrently accessed by the decoders to provide simultaneous multiple outputs thereto.

摘要翻译： 提供了一种用于减少实现布尔函数所需的查找表中可编程体系结构元素数量或相同或逻辑等价的操作的系统。 该系统可以包括连接到多个解码器的输入的单组存储元件，并且存储元件可以由解码器同时访问以向其提供同时多个输出。