专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

31. 发明申请

US20130342377A1 PHASE-BASED ANALOG-TO-DIGITAL CONVERSION 有权
标题翻译：基于相位的模拟到数字转换
公开(公告)号：US20130342377A1
公开(公告)日：2013-12-26
申请号：US13922927
申请日：2013-06-20
申请人： The Ohio State University
发明人： Yiqiao Lin , Mohammed Ismail El-nagger
IPC分类号： H03M1/12 , H03M3/00
CPC分类号： H03M1/12 , H03M1/48 , H03M1/64 , H03M1/665 , H03M3/00 , H03M3/424 , H03M3/43 , H03M3/458
摘要： One embodiment includes a phase-based analog-to-digital converter (ADC) system. The system includes a voltage-to-phase converter configured to convert an input voltage to a phase difference corresponding to a phase-delay with respect to an input clock signal that is based on a magnitude of the input voltage. The system also includes a phase-to-digital converter configured to convert the phase difference into a digital output signal having a digital value corresponding to a magnitude of the phase difference.
摘要翻译：一个实施例包括基于相位的模数转换器（ADC）系统。该系统包括电压相变转换器，其被配置为将输入电压转换为相对于基于输入电压的幅度的输入时钟信号的相位延迟的相位差。该系统还包括配置成将相位差转换成具有对应于相位差大小的数字值的数字输出信号的相数转换器。

32. 发明授权

US07365598B2 Global loop integrating modulator 有权
标题翻译：全球环路积分调制器
公开(公告)号：US07365598B2
公开(公告)日：2008-04-29
申请号：US10556210
申请日：2004-05-06
申请人： Søren Poulsen
发明人： Søren Poulsen
IPC分类号： H03F3/38
CPC分类号： H03F1/32 , H03F3/217 , H03F2200/372 , H03M3/00
摘要： A switch-mode modulator operating at a two-level voltage and including an alternating output stage (3), an optional output filter (5) and a feedback including a function block (14) with a transfer function (MFB). The modulator furthermore includes a forward block (12) provided with means for calculating the difference between the signal (14a) originating from the function block (14) and a reference signal (REF) as well as with a transfer function (MFW). The output (13) of the forward block (12) is the input of a Schmitt-trigger (9), which generates switch on signals (2) for changing the output stage. The output voltage (VOUT) of the modulator applying either after the optional output filter (5) or the output stage (3) is fed back through the function block (14) so as to generate the signal (14a) fed back. The transfer function of the function block (14) and of the forward block (12) is chosen both in response to the transfer function of the output filter (5) and in response to the desired total open-loop-transfer function of the modulator.
摘要翻译：一种以两电平电压工作并包括交替输出级（3），可选输出滤波器（5）和包括具有传输功能（MFB）的功能块（14）的反馈）的开关模式调制器。调制器还包括具有用于计算源自功能块（14）的信号（14a）和参考信号（REF）以及传递函数（MFW）之间的差异的装置的前向块（12）。前向块（12）的输出（13）是施密特触发器（9）的输入，其产生用于改变输出级的开启信号（2）。在可选输出滤波器（5）或输出级（3）之后施加的调制器的输出电压（V OUT OUT）通过功能块（14）反馈，以产生信号（14 a）反馈。响应于输出滤波器（5）的传递函数并且响应于调制器的期望的总开环传递函数来选择功能块（14）和正向块（12）的传递函数。

33. 再颁专利

USRE39527E1 Method and apparatus for measuring a low power signal 有权
标题翻译：用于测量低功率信号的方法和装置
公开(公告)号：USRE39527E1
公开(公告)日：2007-03-27
申请号：US10956015
申请日：2004-09-30
申请人： Volker Brombacher , Fritz Bek
发明人： Volker Brombacher , Fritz Bek
IPC分类号： H01J40/14 , H03F3/08
CPC分类号： H03M3/00 , G01J1/46
摘要： Low intensity light is incident upon a photodiode whose output is coupled to an integrator. The output of the integrator is coupled to an input of an A/D converter, whose output is coupled to a microprocessor, whose output is coupled to a filter. A second output of the microprocessor is coupled to a gate electrode of a FET to provide a reset signal to the FET to reset the integrator. The microprocessor compares the digital samples of the integrated signal from the A/D converter and, firstly, generates the reset signal if a sample is beyond a set limit, and, secondly, calculates delta values between adjacent samples and interpolates the delta values for the reset periods so as to provide a continuous data stream which can be filtered by a filter matched to the form of the original signal.
摘要翻译：低强度光入射到其输出耦合到积分器的光电二极管上。积分器的输出耦合到A / D转换器的输入，其输出耦合到微处理器，其输出耦合到滤波器。微处理器的第二输出耦合到FET的栅电极，以向FET提供复位信号以复位积分器。微处理器将来自A / D转换器的积分信号的数字样本进行比较，首先如果样本超出设定极限，则产生复位信号，其次，计算相邻样本之间的增量值，并对复位周期，以便提供连续的数据流，该数据流可以由与原始信号的形式匹配的滤波器进行滤波。

34. 发明申请

US20050225467A1 METHOD AND SYSTEM FOR ANALOG TO DIGITAL CONVERSION USING DIGITAL PULSE WIDTH MODULATION (PWM) 有权
标题翻译：使用数字脉冲宽度调制（PWM）对模拟转换进行数字转换的方法和系统
公开(公告)号：US20050225467A1
公开(公告)日：2005-10-13
申请号：US10819644
申请日：2004-04-07
申请人： Pallab Midya , Matthew Miller , Patrick Rakers
发明人： Pallab Midya , Matthew Miller , Patrick Rakers
IPC分类号： H03M1/12 , H03M1/34 , H03M3/02
CPC分类号： H03M3/00
摘要： A system and method for analog-to-digital conversion using digital pulse width modulation (PWM) is disclosed. The method and system according to the disclosed invention converts an analog input signal to a digital signal in pulse code modulated (PCM) form. The disclosed invention uses a feedback circuit to perform PWM of the analog input signal. The PWM signal is then decimated to obtain the digital signal in PCM form. The system according to the disclosed invention requires lower operating frequency and dissipates lesser power than prior art systems providing the same sampling frequency and resolution. The operation at a lower frequency is achieved by obtaining two samples from every pulse of the PWM signal; the first sample being obtained from the right duty ratio, and the second sample being obtained form the left duty ratio. Further, the disclosed invention has lesser implementation complexity and higher signal-to-noise ratio than prior art.
摘要翻译：公开了一种使用数字脉宽调制（PWM）进行模数转换的系统和方法。根据所公开的发明的方法和系统将模拟输入信号转换成脉冲编码调制（PCM）形式的数字信号。所公开的发明使用反馈电路来执行模拟输入信号的PWM。然后抽取PWM信号以获得PCM形式的数字信号。根据所公开的发明的系统需要更低的工作频率并且消耗比提供相同采样频率和分辨率的现有技术系统更小的功率。通过从PWM信号的每个脉冲获得两个采样来实现较低频率的操作; 从正确的占空比获得第一个样品，并且从左占空比获得第二个样品。此外，所公开的发明比现有技术具有较小的实现复杂度和更高的信噪比。

35. 发明授权

US3749834A System for processing slope and duration information contained in complex waveforms 失效
标题翻译：用于处理在复杂波形中包含的斜率和时间信息的系统
公开(公告)号：US3749834A
公开(公告)日：1973-07-31
申请号：US3749834D
申请日：1971-05-11
申请人： MARCONI CO LTD
发明人： BRIAN A , ELLIS E
IPC分类号： H03M1/12 , H03M3/04 , H04L7/00 , H04L27/00
CPC分类号： H03M3/00
摘要： A transmission system for transmitting information contained in a complex waveform includes a transmitter in which the individual slopes forming the complex wave and the duration of these slopes are determined and converted into coded signals. These signals are transmitted to a receiver in which the coded signals are used to produce an analogue signal corresponding to the complex wave.
摘要翻译：用于发送包含在复数波形中的信息的传输系统包括发送器，其中形成复数波形的各个斜率和这些斜率的持续时间被确定并转换成编码信号。这些信号被发送到接收机，其中编码信号用于产生对应于复波的模拟信号。

36. 发明授权

KR101912032B1 전류 버퍼의 출력 전류를 디지털 코드로 변환하는 장치 및 방법 有权
公开(公告)号：KR101912032B1
公开(公告)日：2018-10-25
申请号：KR1020170010984
申请日：2017-01-24
申请人： 주식회사 인터메트릭스
发明人： 채영철 , 황현석
IPC分类号： H03M3/00 , H03M1/12 , H03K17/96
CPC分类号： H03F3/45 , H03K17/96 , H03M1/12 , H03M3/00
摘要： 본발명은전류버퍼의출력전류를디지털코드로변환하는장치및 방법을개시한다. 본발명의일실시예에따르면전류버퍼의출력전류를디지털코드로변환하는장치는입력신호를전류신호로변환하고, 상기변환된전류신호를출력하는전류버퍼부, 및상기출력된전류신호를디지털전류신호로변환하여상기변환된디지털전류신호를피드백하고, 상기출력된전류신호및 상기피드백된디지털전류신호의비율에기초하여상기출력된전류신호를디지털코드로변환하는신호변환부를포함할수 있다.

37. 发明公开

KR1020170021258A 임계-기반 신호 코딩을 위한 비동기식 펄스 변조 审中-实审
标题翻译： - 用于基于阈值信号编码的异步脉冲调制
公开(公告)号：KR1020170021258A
公开(公告)日：2017-02-27
申请号：KR1020167036046
申请日：2015-05-19
申请人： 퀄컴 인코포레이티드
发明人： 윤영철
IPC分类号： H04L25/02 , H04L7/00 , H04L7/04 , H04L25/06 , G06N3/04 , H03M3/02 , H03M3/00
CPC分类号： H04L7/04 , G06N3/049 , H03M3/00 , H03M3/02 , H03M3/30 , H04L7/0016 , H04L25/02 , H04L25/067 , H04L25/069
摘要： 신호처리방법은, 입력신호를하나이상의포지티브임계값들및 하나이상의네거티브임계값들과비교하는것을포함한다. 이방법은또한, 입력신호의포지티브임계치(들) 및네거티브임계치(들)와의비교에기초하여출력신호를생성하는것을포함한다. 이방법은, 출력신호를감쇠재구성필터내로피드백하여재구성된신호를형성하는것 및그 재구성된신호를입력신호와결합하는것을더 포함한다.
摘要翻译：信号处理的方法包括将输入信号与一个或多个正阈值和一个或多个负阈值进行比较。该方法还包括基于输入信号与正阈值和负阈值的比较来产生输出信号。该方法还包括将输出信号反馈回衰减重构滤波器以产生重构信号并将重构信号与输入信号组合。

38. 发明公开

KR1020180086922A 전류 버퍼의 출력 전류를 디지털 코드로 변환하는 장치 및 방법 有权
公开(公告)号：KR1020180086922A
公开(公告)日：2018-08-01
申请号：KR1020170010984
申请日：2017-01-24
申请人： 주식회사 인터메트릭스
发明人： 채영철 , 황현석
IPC分类号： H03M3/00 , H03M1/12 , H03K17/96
CPC分类号： H03F3/45 , H03K17/96 , H03M1/12 , H03M3/00 , H03M3/458 , H03F3/45475 , H03K17/962 , H03M1/1245
摘要： 본발명은전류버퍼의출력전류를디지털코드로변환하는장치및 방법을개시한다. 본발명의일실시예에따르면전류버퍼의출력전류를디지털코드로변환하는장치는입력신호를전류신호로변환하고, 상기변환된전류신호를출력하는전류버퍼부, 및상기출력된전류신호를디지털전류신호로변환하여상기변환된디지털전류신호를피드백하고, 상기출력된전류신호및 상기피드백된디지털전류신호의비율에기초하여상기출력된전류신호를디지털코드로변환하는신호변환부를포함할수 있다.

39. 发明申请

US20180076780A1 FAST SETTLING CAPACITIVE GAIN AMPLIFIER CIRCUIT 审中-公开
公开(公告)号：US20180076780A1
公开(公告)日：2018-03-15
申请号：US15600542
申请日：2017-05-19
申请人： Analog Devices Global
发明人： Hanqing Wang , Gerard Mora-Puchalt
IPC分类号： H03F3/00 , H03F3/42 , H03F3/45 , H03F3/393 , H03F1/02 , H03F1/56 , H03F1/32
CPC分类号： H03F3/005 , H03F1/02 , H03F1/14 , H03F1/3211 , H03F1/56 , H03F3/387 , H03F3/393 , H03F3/426 , H03F3/45071 , H03F3/45475 , H03F2200/213 , H03F2200/267 , H03F2200/271 , H03F2200/378 , H03F2203/45458 , H03F2203/45514 , H03M3/00 , H03M3/496
摘要： A capacitive gain amplifier circuit amplifies an input signal by a pair of differential amplifier circuits couples in series. The first differential amplifier circuit is reset during an autozero phase while disconnected from the second differential amplifier circuit, and the first and second differential amplifier circuits are connected together in series during a chop phase. A set of feedback capacitors is selectively switched in between respective outputs of the second differential amplifier circuit and respective inputs of the first differential amplifier circuit during the chop phase.

40. 发明授权

US09571931B1 Systems and methods for reducing non-linearities of a microphone signal 有权
标题翻译：用于减少麦克风信号的非线性的系统和方法
公开(公告)号：US09571931B1
公开(公告)日：2017-02-14
申请号：US14247987
申请日：2014-04-08
申请人： Cirrus Logic, Inc.
发明人： John L. Melanson , John C. Tucker
IPC分类号： H04R3/02 , H04R3/00 , H04R29/00 , H04R19/04
CPC分类号： H04R3/02 , H03F1/26 , H03F3/16 , H03F2200/372 , H03M3/00 , H03M3/39 , H03M3/424 , H03M3/458 , H03M3/50 , H03M7/3026 , H03M7/3028 , H04R3/00 , H04R3/002 , H04R3/007 , H04R19/04 , H04R29/001
摘要： To correct for non-linearities in the response of a microphone as a function of sound pressure level incident upon the microphone, a displacement non-linearity function is applied to the signal path of the microphone, wherein the displacement non-linearity function is a function of the digital audio output signal and has a response modeling non-linearities of the displacement as a function of a sound pressure level incident upon the microphone.
摘要翻译：为了校正麦克风的响应中的非线性作为入射到麦克风的声压级的函数，位移非线性函数被施加到麦克风的信号路径，其中位移非线性函数是函数的数字音频输出信号，并且具有作为入射到麦克风的声压级的函数的位移的非线性的响应建模。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式