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公开(公告)号：US4325054A
公开(公告)日：1982-04-13
申请号：US62253
申请日：1979-07-30
摘要： In a folding circuit of an analog-to-digital converter a chain of emitters of transistors which are interconnected by threshold elements and fed by direct current sources are used to reduce the distortion. The circuit is controlled by a current source which produces the input signal.
摘要翻译： 在模数转换器的折叠电路中，使用由阈值元件互连并由直流电源馈送的晶体管的发射极链来减少失真。 该电路由产生输入信号的电流源控制。
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公开(公告)号：US4227124A
公开(公告)日：1980-10-07
申请号：US24146
申请日：1979-03-26
摘要： A sweep generator circuit for use with a cathode ray oscilloscope. It provides for a high duty-cycle by eliminating the discharge and recovery time of a conventional sweep generator circuit. This is accomplished by alternately charging and discharging the timing capacitor at equal rates, forming linear up and down ramp signals. Then, by amplifying the ramp signals along with synchronously reversing the polarity of the amplified down ramp signals, using electronic switching, identical unidirectional sweeps are produced during both charging and discharging times of the timing capacitor.
摘要翻译： 用于阴极射线示波器的扫描发生器电路。 它通过消除常规扫描发生器电路的放电和恢复时间来提供高占空比。 这通过以等速交替地对定时电容器进行充电和放电来实现，形成线性上下斜坡信号。 然后，通过放大斜坡信号以及使用电子开关同时反转放大的下降斜坡信号的极性，在定时电容器的充电和放电时间期间产生相同的单向扫描。
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公开(公告)号：US4083036A
公开(公告)日：1978-04-04
申请号：US707035
申请日：1976-07-20
IPC分类号： G10H1/057 , G10H5/00 , H03G3/10 , H03K3/00 , H03K3/64 , H03K4/02 , H03K5/00 , H03K5/003 , H03K6/00 , G11C7/00
摘要： An arrangement suitable for producing pulse-shaped signals whose amplitude is determined by a control voltage in an electronic musical instrument. The arrangement comprises a first transistor having a control electrode to which the control voltage is applied and a main electrode connected to a point of fixed potential via an impedance. The arrangement further comprises means for transferring the output current of the first transistor, which current is determined by the control voltage, to an output in a pulse-shaped fashion. In order to convert the unipolar current pulses into bipolar current pulses the arrangement includes a second transistor whose input circuit is connected in parallel with the input circuit of the first transistor. The output current of this second transistor is subtracted from the output current of the first transistor by means of a current amplifier, the result being available at the output.
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4.发明授权Method and apparatus for producing ramp signals with rounded inflection points 失效用于产生具有圆形拐点的斜坡信号的方法和装置
公开(公告)号：US4016496A
公开(公告)日：1977-04-05
申请号：US615054
申请日：1975-09-19
摘要： Ramp signals having rounded starts and finishes are provided through the method of producing an electrical voltage signal comprised of approximately circular portions and approximately straight line portions wherein the straight line portions are approximately tangential to the circular portions. In achieving the desired ramp signals, suitable circuitry is provided in which, in one embodiment, a high gain amplifier is selectively fed a step input voltage to initiate the ramp signal. The amplifier has a voltage limited output and is series connected to a first integrator. The first integrator has a voltage limited output and is series connected to a second integrator which produces the required ramp signal. The circuit also contains two feedback loops. The output from the first integrator is fed to the input of the high gain amplifier via an inverting amplifier. The output of the second integrator is fed to the high gain amplifier via a resistor. When the step input voltage is reduced to zero volts, the circuit produces a smoothed ramp signal in the reverse direction.
摘要翻译： 通过产生包括大致圆形部分和大致直线部分的电压信号的方法来提供具有圆形开始和结束的斜坡信号，其中直线部分与圆形部分大致相切。 在实现期望的斜坡信号时，提供了合适的电路，其中在一个实施例中，高增益放大器选择性地馈送步进输入电压以启动斜坡信号。 放大器具有电压限制输出，并串联连接到第一个积分器。 第一个积分器具有电压限制输出，并且串联连接到产生所需斜坡信号的第二积分器。 该电路还包含两个反馈回路。 来自第一积分器的输出通过反相放大器馈送到高增益放大器的输入端。 第二个积分器的输出通过一个电阻馈入高增益放大器。 当步进输入电压降低到零伏特时，电路在相反方向产生平滑的斜坡信号。
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公开(公告)号：US4007400A
公开(公告)日：1977-02-08
申请号：US557439
申请日：1975-03-11
申请人： John F. Sutton
发明人： John F. Sutton
摘要： A cathode ray oscilloscope deflection system selectively displays an integral number of cycles of a periodic or quasi-periodic input signal, regardless of the frequency of the signal. A wide band phase locked loop, synchronized to the input signal, generates pulses at a pulse repetition rate that is an integral multiple of the frequency of the input signal. A ripple counter converts the pulses into a staircase, x-axis deflection signal having a period equal to the duration of the number of cycles of the input signal selected for display and a predetermined maximum amplitude so that the x-axis of the scope is always swept the same distance regardless of the frequency of the input signal. The number of cycles displayed is determined by the repetition rate of the phase locked loop pulses relative to the frequency of the input signal. The repetition rate of the loop pulses is controlled by: (a) a first binary divider for controlling which of the fundamental or integral submultiple frequency of the input signal to which the phase locked loop is synchronized, and/or (b) a second binary divider circuit for controlling the pulse repetition rate of feedback pulses in the phase locked loop. Frequency or period of the input signal is displayed by a digital frequency or period meter that monitors the loop pulses.
摘要翻译： 阴极射线示波器偏转系统选择性地显示周期性或准周期性输入信号的整数个周期，而不管信号的频率。 与输入信号同步的宽带锁相环以脉冲重复频率产生脉冲，脉冲重复频率是输入信号频率的整数倍。 纹波计数器将脉冲转换成阶梯x轴偏转信号，其周期等于被选择用于显示的输入信号的周期数的持续时间和预定的最大振幅，使得该范围的x轴始终为 扫描相同的距离，无论输入信号的频率如何。 所显示的周期数是由锁相环脉冲相对于输入信号的频率的重复率确定的。 环路脉冲的重复频率由以下部分控制：（a）第一二进制分频器，用于控制锁相环同步的输入信号的基波或整数倍频，以及/或（b）第二二进制 用于控制锁相环中反馈脉冲的脉冲重复率的分频电路。 输入信号的频率或周期由监视回路脉冲的数字频率或周期表显示。
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6.发明授权Improved shift register having (n/2 - 1) stages for digitally synthesizing an n-phase sinusoidal waveform 失效具有数字合成N相SINUSOIDAL波形的改进型移位寄存器（N / 2 - 1）级
公开(公告)号：US3801807A
公开(公告)日：1974-04-02
申请号：US3801807D
申请日：1972-10-27
发明人： CONDON J
摘要： A method is disclosed for calculating appropriate output resistor values in the summing circuitry of a transversal filter featuring a shift register configured to digitally synthesize sinusoidal waveforms. Output resistor values calculated according to the method result in an improved circuit by allowing the elimination of the otherwise required last stage of the shift register and a reduction with respect to the prior art in the ratios of the values of the output resistors.
摘要翻译： 公开了一种用于计算横向滤波器的求和电路中适当的输出电阻值的方法，其特征在于配置成数字地合成正弦波形的移位寄存器。 根据该方法计算的输出电阻值通过允许消除移位寄存器的另外所需的最后一级并且相对于现有技术在输出电阻器的值的比率中的减小而导致改进的电路。
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公开(公告)号：US3714497A
公开(公告)日：1973-01-30
申请号：US3714497D
申请日：1970-10-15
申请人： COLE B
发明人： COLE B
摘要： A cathode ray tube deflection system which consists of a series of weighted current steps utilizing switches to drive a deflection coil directionally sweeping over a screen. A transistor isolates the deflection coil from the switches. When a switch activates or closes, the transistor saturates and the current through the deflection coil rises linearly. The current through the deflection coil is limited to that determined by the current summation through resistor circuits connected to the switches or input terminals. The amount of current passage through the deflector coil determines the amount of movement over the screen.
摘要翻译： 一种阴极射线管偏转系统，其由一系列加权电流步骤组成，利用开关来驱动偏转线圈定向扫过屏幕。 一个晶体管将偏转线圈与开关隔离。 当开关激活或闭合时，晶体管饱和，通过偏转线圈的电流线性上升。 通过偏转线圈的电流被限制在通过连接到开关或输入端子的电阻电路的电流求和所确定的电流。 通过偏转线圈的电流通过量决定了屏幕上的移动量。
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公开(公告)号：US3651337A
公开(公告)日：1972-03-21
申请号：US3651337D
申请日：1970-06-02
发明人： TOMISAWA NORIO
摘要： In frequency divider circuit for saw-tooth wave including a circuit for producing a saw-tooth wave of a frequency f, a circuit for producing a square wave having a frequency f/2, mixing resistors, and a buffer circuit for obtaining a desired output saw-tooth wave of frequency f/2; the peak amplitude of the square wave is so selected as to be greater than the peak amplitude of the saw-tooth wave of a frequency f before mixing, and the ratio of the resistances of the mixing resistors is so selected that the peak amplitudes of the square wave component and the saw-tooth wave component in the mixed resultant wave become equal after mixing, whereby the resultant saw-tooth wave of a frequency f/2 has an amplitude at least equal to that of the original saw-tooth wave of frequency f.
摘要翻译： 在包括用于产生频率f的锯齿波的电路的锯齿波分频器电路中，用于产生具有频率f / 2的方波的电路，混合电阻器和用于获得期望输出的缓冲电路 频率f / 2的锯齿波; 方波的峰值振幅被选择为大于混合前频率f的锯齿波的峰值振幅，并且混合电阻器的电阻比被选择成使得峰值振幅 混合合成波中的方波分量和锯齿波分量在混合后变得相等，从而所得到的频率为f / 2的锯齿波的振幅至少等于原始锯齿波频率的振幅 F。
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9.发明授权Apparatus for creating a chorus or celeste effect with an electronic musical instrument 失效用电子音乐仪器创造合唱或电影效果的装置
公开(公告)号：US3535431A
公开(公告)日：1970-10-20
申请号：US3535431D
申请日：1968-04-19
申请人： ELECTROHOME LTD
发明人： SZABO JOHN
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