公开(公告)号：WO2014149694A1

公开(公告)日：2014-09-25

申请号：PCT/US2014/020409

申请日：2014-03-04

申请人： MICROCHIP TECHNOLOGY INCORPORATED

发明人： VAISHNAV, Rohit

IPC分类号： H03K5/08 ,  H03B5/08 ,  H03K5/1532

CPC分类号： H03L5/00 ,  H03B5/08 ,  H03G3/001 ,  H03K5/082 ,  H03K5/1532

摘要： An oscillator/amplifier has a gain controlled amplifier that maintains a desired oscillation waveform amplitude for all possible oscillation frequencies of operation. A peak detector produces a direct current (DC) voltage proportional to the oscillation waveform, and a voltage reference generator provides a reference voltage that is compared against the DC voltage from the peak detector. When the DC voltage is less than the reference voltage the gain of the amplifier is increased, and when the DC voltage is equal to or greater than the reference voltage the gain of the amplifier is decreased. A programmable voltage reference generator may also be used to provide for selection of different oscillation waveform amplitudes. A digital control loop controls the oscillation waveform amplitude over the entire possible frequency range of operation. Various frequency determining elements, e.g., crystal, piezoelectric resonator, inductor-capacitor tuned circuit, resistor-capacitor network, etc., may be used in combination with the oscillator/amplifier.

摘要翻译： 振荡器/放大器具有增益控制放大器，其对于所有可能的操作振荡频率都保持期望的振荡波形幅度。 峰值检测器产生与振荡波形成比例的直流（DC）电压，并且参考电压发生器提供与峰值检测器的直流电压进行比较的参考电压。 当直流电压小于参考电压时，放大器的增益增加，当直流电压等于或大于参考电压时，放大器的增益减小。 也可以使用可编程电压参考发生器来提供不同振荡波形幅度的选择。 数字控制回路在整个可能的操作频率范围内控制振荡波形幅度。 可以与振荡器/放大器组合使用各种频率确定元件，例如晶体，压电谐振器，电感器 - 电容调谐电路，电阻器 - 电容器网络等。

公开(公告)号：WO2004111658A1

公开(公告)日：2004-12-23

申请号：PCT/IB2004/050833

申请日：2004-06-03

申请人： PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH ,  KONINKLIJKE PHILIPS ELECTRONICS N.V. ,  BUCHHOLD, Reinhard

发明人： BUCHHOLD, Reinhard

IPC分类号： G01P3/489

CPC分类号： G01P3/4802 ,  G01P3/481 ,  G01P3/489 ,  H03K5/007 ,  H03K5/082

摘要： A circuit arrangement for obtaining an output signal (Va) form a signal (Vs) containing at least one alternating component comprises a signal source (1) that supplies this signal (Vs), a first peak value detection device (2) for determining a maximum value (Vmax) of the signal (Vs), a second peak value detection device (3) for determining a minimum value (Vmin) of the signal (Vs), a first signal linking device (4, 5, 6, 71) for obtaining a first resulting signal (V1) by additive linking of the signal (Vs), the maximum value (Vmax) and the minimum value (Vmin) in accordance with the rule: V1 = K1*{Vs - (Vmax + Vmin)/2}, in which K1 is a freely selectable first constant factor, a second signal linking device (7, 72) for obtaining a second resulting signal (V2) by additive linking of the maximum value (Vmax) and a minimum value (Vmin) in accordance with the rule: V2 = (Vmax - Vmin)*K2, in which K2 is a freely selectable second factor, a first squaring device (8) for squaring the first resulting signal (V1), a second squaring device (9) for squaring the second resulting signal (V2) and a third signal linking device (100, 11, 101) for obtaining the output signal (Va) by additive linking of the squared first resulting signal ((V1) 2 ) and the squared second resulting signal ((V2) 2 ) in accordance with the rule: Va = K3*{(1/8)*(K1/K2) 2 *(V2) 2 - (V1) 2 }, in which K3 is a freely selectable third constant factor. By means of the invention, which furthermore includes a rotational speed measurement device comprising such a circuit arrangement and also a method of obtaining an output signal, an unchanged or increased resolution of the output signal can be achieved from the signal containing an alternating component having a restricted resolution.

摘要翻译： 用于获得形成包含至少一个交替分量的信号（Vs）的输出信号（Va）的电路装置包括提供该信号（Vs）的信号源（1），用于确定 信号（Vs）的最大值（Vmax），用于确定信号（Vs）的最小值（Vmin））的第二峰值检测装置（3），第一信号连接装置（4,5,6,71） 用于通过根据规则：V1 = K1 * {Vs-（Vmax + Vmin））将信号（Vs），最大值（Vmax）和最小值（Vmin）的相加链接来获得第一结果信号（V1） / 2}，其中K1是可自由选择的第一常数因子，第二信号链接装置（7,72），用于通过最大值（Vmax）和最小值（Vmin）的相加链接来获得第二结果信号（V2） ），其中K2是可自由选择的第二因子，V2 =（Vmax-Vmin）* K2，用于平坦化第一个res的第一平方设备（8） 用于使第二结果信号（V2）平方的第二平方装置（9）和用于通过将第一信号（V1）和第二信号的平方的加法连接获得输出信号（Va）的第三信号链接装置（100,11,101） 根据规则：Va = K3 * {（1/8）*（K1 / K2）2 *），得到信号（（V1）<2））和平方第二结果信号（（V2） （V2）<2> - （V1）<2>}，其中K3是可自由选择的第三常数因子。 通过本发明，其还包括包括这种电路装置的转速测量装置以及获得输出信号的方法，可以从包含交替分量的信号中获得输出信号的不变或增加的分辨率， 限制分辨率。

公开(公告)号：WO9903201A3

公开(公告)日：1999-03-25

申请号：PCT/GB9802001

申请日：1998-07-06

申请人： UNIV SURREY ,  UNDERHILL MICHAEL JAMES ,  DOWNIE NEIL ALEXANDER

发明人： UNDERHILL MICHAEL JAMES ,  DOWNIE NEIL ALEXANDER

IPC分类号： H03K5/1252 ,  H03K5/003 ,  H03K5/08 ,  H03K5/156 ,  H03K5/19

CPC分类号： H03K5/1565 ,  H03K5/003 ,  H03K5/082 ,  H03K5/19

摘要： A noise reduction circuit useful as a clock restoration circuit includes a DC removal circuit (67) for removing a DC level from an input pulse train. An integrator (54) integrates the input pulse train after a DC level has been removed and a comparator (59) compares the integrator output with a threshold value (Vmp) to detect for a missing pulse. A pulse generator (65) inserts into the input pulse train an additional pulse delayed with respect to any missing pulse and an output pulse train having reduced noise is derived from the integrator output.

摘要翻译： 用作时钟恢复电路的降噪电路包括用于从输入脉冲串中去除DC电平的DC去除电路（67）。 积分器（54）在DC电平被去除之后对输入脉冲串进行积分，并且比较器（59）将积分器输出与阈值（Vmp）进行比较以检测丢失脉冲。 脉冲发生器（65）将相对于任何缺失脉冲延迟的附加脉冲插入到输入脉冲串中，并且从积分器输出导出具有降低噪声的输出脉冲串。

公开(公告)号：WO9508869A2

公开(公告)日：1995-03-30

申请号：PCT/EP9403050

申请日：1994-09-13

申请人： THOMSON BRANDT GMBH ,  GLEIM GUENTER ,  HEIZMANN FRIEDRICH ,  REKLA BERND

发明人： GLEIM GUENTER ,  HEIZMANN FRIEDRICH ,  REKLA BERND

IPC分类号： G11B15/46 ,  F04B49/10 ,  H02P6/14 ,  H03K5/08

CPC分类号： H03K5/082

摘要： A circuit is disclosed for driving a motor. In order to regulate the speed of and/or switch a motor, it is known to associate several sensors with the motor to generate several phase-shifted sensor signals of the same type that indicate the position of the rotor. Driving signals for switching or regulating the speed of the motor are derived from said signals in a hysteresis comparator. In practical operation, interferences are superimposed on the signals at the outputs of the sensors. These interferences are due for example to the motor coils and affect the evaluation. The object of the invention is to develop a circuit of said type that is able to suppress interferences even when the motor stands still and that retains this ability for an unlimited time. For that purpose, switching means cause the rate of hysteresis for each sensor signal (a) to depend at each comparator (A) from the amplitude of one or several other sensor signals (b, c). The sensor signals are preferably supplied to an OR stage (Da, Db, Dc), the output voltage of which controls the hysteresis at the comparators (A, B, C). This circuit is particularly suitable for regulating the speed of or switching a capstan motor in a videorecorder.

摘要翻译： 用于电机的巡航控制和/或换向，已知的是，在发动机多个传感器指示多个转子位置相关联，产生类似的，相互相移的传感器信号。 可以在换向或速度调节一个具有迟滞比较控制信号从中回收。 在传感器处的干扰的输出信号被叠加在实践中，例如 来自电机线圈和影响评估。 任务是建设gennanten方式的电路，使得它也电动机停止能够抑制干扰，这种能力无限期地保持。 根据本发明，提供了电路装置，用于使每一个所述比较器（A）为传感器信号（A）的一个或多个其它传感器信号的振幅的迟滞量（B，C）是相关的。 优选地，传感器信号到OR阶段（DA，DB，DC）供给，其输出电压控制滞后比较器（A，B，C）。 特别是用于速度控制或在录像机中的主动轮马达的换向。

公开(公告)号：WO2018125489A1

公开(公告)日：2018-07-05

申请号：PCT/US2017/063709

申请日：2017-11-29

申请人： AUCMOS TECHNOLOGIES USA, INC. ,  QIAN, Wei ,  LU, Teh-Shang

发明人： QIAN, Wei ,  LU, Teh-Shang

IPC分类号： H03G3/30 ,  H03K5/08 ,  G01D5/24

CPC分类号： H03G3/30 ,  G01D5/24 ,  G01R1/00 ,  G06Q2220/00 ,  G08B1/00 ,  H03G3/001 ,  H03K5/082

摘要： A proximity detector circuit that receives a single-ended sensor signal includes (a) an adaptive level control circuit maintaining the single-ended sensor signal within a predetermined voltage range relative a common mode reference signal; and (b) a programmable gain amplifier receiving the single-ended sensor signal and the common mode reference signal as a differential input signal, and providing an output signal derived from amplifying the differential input signal.

公开(公告)号：WO2015072522A1

公开(公告)日：2015-05-21

申请号：PCT/JP2014/080107

申请日：2014-11-13

申请人： 旭化成エレクトロニクス株式会社

发明人： 山羽　義郎 ,  竹原　聡

IPC分类号： H03K5/08 ,  H01L21/336 ,  H01L21/822 ,  H01L21/8234 ,  H01L21/8247 ,  H01L27/04 ,  H01L27/088 ,  H01L27/115 ,  H01L29/788 ,  H01L29/792

CPC分类号： G11C16/10 ,  G01R19/16576 ,  G05F3/24 ,  G11C5/147 ,  G11C16/0408 ,  G11C16/0425 ,  G11C16/30 ,  H01L21/28273 ,  H01L27/0883 ,  H01L27/11517 ,  H01L29/7883 ,  H03K5/082

摘要： 　入力電圧が予め定められた閾値電圧以上か否かを検出する電圧検出器であって、基準電圧を生成する基準電圧生成部と、入力電圧および基準電圧が入力され、入力電圧が、基準電圧により定まる閾値電圧以上か否かを検出するコンパレータとを備え、基準電圧生成部は、コントロールゲートおよびフローティングゲートを有する第１書込ＭＯＳトランジスタと、第２書込ＭＯＳトランジスタと、第１出力ＭＯＳトランジスタと、第２出力ＭＯＳトランジスタとを有する電圧検出器を提供する。

摘要翻译： 检测输入电压是否至少为预定阈值电压的该电压检测器具有：基线电压产生单元，其生成基线电压; 以及输入电压和基准电压输入的比较器，并且检测输入电压是否至少为由基准电压规定的阈值电压。 基线电压产生单元具有：具有控制栅极和浮动栅极的第一读入MOS晶体管; 第二读入MOS晶体管; 第一输出MOS晶体管; 和第二输出MOS晶体管。

公开(公告)号：WO2012013613A1

公开(公告)日：2012-02-02

申请号：PCT/EP2011/062701

申请日：2011-07-25

申请人： ST-ERICSSON SA ,  ARNBORG, Torkel

发明人： ARNBORG, Torkel

IPC分类号： H03F3/45 ,  H03K5/24

CPC分类号： H03K3/3565 ,  H03K5/082 ,  H03K5/1252

摘要： A buffer for converting sinusoidal waves to square waves with reduced phase noise is described herein. The buffer shunts current from the outputs of a differential amplifier during sinusoidal state transition periods at the differential amplifier inputs to increase the finite slope of square wave transition periods of the output square wave. More particularly, a sinusoidal wave having alternating peaks and valleys connected by sinusoidal state transition periods is applied to differential inputs of a differential amplifier to generate a square wave at the differential outputs, where the output square wave comprises alternating high and low states connected by square wave state transition periods having a finite slope. The output square wave is shaped to increase the finite slope of the square wave transition periods by providing additional paths between the differential outputs and ground that shunt current from the differential amplifier during the sinusoidal state transition periods.

摘要翻译： 这里描述了用于将正弦波转换成具有降低的相位噪声的方波的缓冲器。 缓冲器在差分放大器输入端的正弦状态转换期间，从差分放大器的输出端分流电流，以增加输出方波的方波跃迁周期的有限斜率。 更具体地说，具有通过正弦状态转变周期连接的交变的峰值和谷值的正弦波被施加到差分放大器的差分输入以在差分输出处产生方波，其中输出方波包括由正方形连接的交替的高和低状态 具有有限斜率的波状态跃迁周期。 输出方波的形状通过在正弦状态转换周期期间通过在差分输出和差分放大器的分流电流之间提供附加路径来增加方波过渡周期的有限斜率。

公开(公告)号：WO2011062983A1

公开(公告)日：2011-05-26

申请号：PCT/US2010/057022

申请日：2010-11-17

申请人： GEER, Derek, H. ,  SMELTER, Timothy, John ,  THOMAS, John, Gordon

发明人： GEER, Derek, H. ,  SMELTER, Timothy, John ,  THOMAS, John, Gordon

IPC分类号： H03L5/00

CPC分类号： H03K5/02 ,  H03K3/013 ,  H03K5/082

摘要： The present specification provides a method, apparatus and system for sensing a signal with automatic adjustments for changing signal levels. A novel fractional peak discriminator circuit is provided which can be incorporated into a system for measuring periodic signals from moving elements. The circuit can be used regardless of whether the periodic signals are detected using optics, magnetic detector or other methods.

摘要翻译： 本说明书提供用于感测具有用于改变信号电平的自动调整的信号的方法，装置和系统。 提供了一种新颖的分数峰鉴别器电路，其可以并入用于测量来自移动元件的周期信号的系统中。 无论使用光学，磁检测器或其他方法检测到周期信号，都可以使用该电路。

公开(公告)号：WO2011049597A2

公开(公告)日：2011-04-28

申请号：PCT/US2010/002417

申请日：2010-09-02

申请人： LOJACK OPERATING COMPANY, LP ,  FEDAN, Orest ,  BOURQUE, Stephen

发明人： FEDAN, Orest ,  BOURQUE, Stephen

IPC分类号： H03K5/22

CPC分类号： H03K5/082

摘要： An improved fast settling bit slicing comparator circuit includes a comparator having a non-inverting and inverting input; the non-inverting input receiving an input signal; a filter circuit for receiving the input signal and being connected with the inverting input of the comparator; a positive feedback circuit interconnected between the output of the comparator and the non-inverting input of the comparator for introducing a predetermined hysteresis offset; the filter circuit including a filter resistance and filter capacitance having a reduced time constant sufficient to compensate for at least a portion of the hysteresis offset. Additionally, the positive feedback circuit may be interconnected with the inverting input of the comparator through the filter circuit for gradually reducing the effect of the hysteresis offset by reducing the differential voltage between the inverting and non-inverting inputs.

摘要翻译： 改进的快速建立位切片比较器电路包括具有非反相和反相输入的比较器; 所述同相输入端接收输入信号; 滤波电路，用于接收输入信号并与比较器的反相输入端相连; 在比较器的输出和用于引入预定的滞后偏移的比较器的非反相输入端之间互连的正反馈电路; 滤波器电路包括具有足以补偿至少一部分磁滞偏移的减小的时间常数的滤波电阻和滤波电容。 此外，正反馈电路可以通过滤波电路与比较器的反相输入互连，通过减小反相和非反相输入之间的差分电压来逐渐减小滞后偏移的影响。

公开(公告)号：WO2010134065A1

公开(公告)日：2010-11-25

申请号：PCT/IL2010000391

申请日：2010-05-16

申请人： KRAMER ELECTRONICS LTD ,  KRAMER JOSEPH

发明人： KRAMER JOSEPH

IPC分类号： H03K5/08 ,  H04N5/04

CPC分类号： H04N5/04 ,  H03K5/082 ,  H04N7/035

摘要： In a method and circuit for recovering a sync signal from an input sync signal passing through a cable to a display device, an average value of the input sync signal is obtained during a predetermined time period so as to obtain a sync threshold, which is compared with the input sync signal. A sync signal is output when the input sync signal is greater than the sync threshold.

摘要翻译： 在从通过电缆的输入同步信号中恢复同步信号到显示装置的方法和电路中，在预定时间段内获得输入同步信号的平均值，以获得比较的同步阈值 与输入同步信号。 当输入同步信号大于同步阈值时，输出同步信号。