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1.发明授权Circuit for PCM conversion of an analog signal, with improvement in gain-tracking 失效模拟信号的PCM转换电路，具有增益跟踪的改进
公开(公告)号：US5287106A
公开(公告)日：1994-02-15
申请号：US187507
申请日：1988-04-28
CPC分类号： H03M1/0604 , H03M1/12
摘要： The circuit includes a filter to which an analog signal is applied, a quantizer driven by the filter, a sampler at a desired frequency driven by the quantizer and a PCM encoder driven by the sampler. The quantizer generates a quantize signal according to the received analog signal and further generates a difference signal according to the difference between a quantized signal and the analog signal. A feedback circuit feeds back the difference signal from the quantizer to a stage of the filter so that the overall transfer function from the input of the feedback circuit to the output of the filter is equivalent to a low pass filtering.
摘要翻译： 电路包括施加模拟信号的滤波器，由滤波器驱动的量化器，由量化器驱动的期望频率的采样器和由采样器驱动的PCM编码器。 量化器根据接收到的模拟信号生成量化信号，并根据量化信号和模拟信号之间的差产生差分信号。 反馈电路将差分信号从量化器反馈到滤波器的级，使得从反馈电路的输入到滤波器的输出的整体传递函数等效于低通滤波。
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2.发明授权
公开(公告)号：US5559687A
公开(公告)日：1996-09-24
申请号：US261473
申请日：1994-06-17
CPC分类号： H02M3/07
摘要： A voltage multiplier for relatively high output current has its design output voltage stabilized and rendered independent of process spread, temperature, supply voltage and output current level, by a stabilization loop driving the switch that cyclically connects to ground a charge transfer capacitance of the functional voltage multiplier circuit. The feedback loop comprises an integrating stage, stabilized by creating a low-frequency zero in the transfer function for compensating one of two low-frequency poles of the transfer function of the whole circuit.
摘要翻译： 用于相对较高输出电流的电压倍增器，其设计输出电压稳定并且独立于工艺扩展，温度，电源电压和输出电流电平，通过稳定环路驱动开关，循环地连接到接地的功能电压的电荷转移电容 乘法器电路。 反馈回路包括积分级，通过在传递函数中产生低频零点来稳定，以补偿整个电路的传递函数的两个低频极点中的一个。
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公开(公告)号：US5606625A
公开(公告)日：1997-02-25
申请号：US249316
申请日：1994-05-26
CPC分类号： H03G3/3089
摘要： A digital circuit for controlling the gain of an amplifier stage of a coded signal receiving channel is provided. The circuit includes a peak detector coupled to the input terminal of the receiving channel through a coded signal rectifying circuit and a gain control stage. The gain control stage includes a digital comparator having two input terminals respectively connected to an output terminal of the peak detector and to a memory, and an output terminal coupled to a gain control terminal of the amplifier stage. The address selectable contents of the memory contain predetermined peak values in coded form.
摘要翻译： 提供了一种用于控制编码信号接收通道的放大器级的增益的数字电路。 电路包括通过编码信号整流电路和增益控制级耦合到接收信道的输入端的峰值检测器。 增益控制级包括数字比较器，其具有分别连接到峰值检测器的输出端子和存储器的两个输入端子，以及耦合到放大器级的增益控制端子的输出端子。 存储器的地址可选择内容包含编码形式的预定峰值。
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4.发明授权Method and apparatus for efficient and distortion compensated digital class-D amplifier ternary modulation scheme 有权用于高效和失真补偿的数字D类放大器三元调制方案和装置公开(公告)号：US09048794B2
公开(公告)日：2015-06-02
申请号：US13881279
申请日：2011-10-18
申请人： Rossella Bassoli , Carlo Crippa
发明人： Rossella Bassoli , Carlo Crippa
CPC分类号： H03F1/3205 , H03F1/26 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F2200/03 , H03F2200/351 , H03K7/08
摘要： The present disclosure generally relates to the field of digital Class-D amplifiers and more specifically to a technique for reducing output waveforms distortion of a digital class-D amplifier implementing a ternary modulation scheme. An apparatus embodiment comprises an enlarging component for enlarging at least one pulse of a first output waveform PWM_P_TERN′ of the amplifier 50 by a first enlarging pulse, wherein the at least one pulse of the first output waveform PWM_P_TERN′ is symmetrically enlarged by the first enlarging pulse with respect to the center position of the at least one pulse; and a pulses generating component for generating at least one first compensating pulse comp_pulse_p and for adding the generated at least one first compensating pulse comp_pulse_p on a second output waveform PWM_N_TERN′ of the amplifier 50, wherein the at least one first compensating pulse comp_pulse_p has substantially the same width P as the first enlarging pulse and is added on the second output waveform PWM_N_TERN′ at a position which corresponds to the center position of the at least one pulse of the first output waveform PWM_P_TERN′.
摘要翻译： 本公开一般涉及数字D类放大器的领域，更具体地涉及一种用于减少实现三进制调制方案的数字D类放大器的输出波形失真的技术。 装置实施例包括用于通过第一放大脉冲放大放大器50的第一输出波形PWM_P_TERN'的至少一个脉冲的放大部件，其中通过第一放大对称地扩大第一输出波形PWM_P_TERN'的至少一个脉冲 相对于所述至少一个脉冲的中心位置的脉冲; 以及用于产生至少一个第一补偿脉冲comp_pulse_p并用于将所生成的至少一个第一补偿脉冲comp_pulse_p添加到放大器50的第二输出波形PWM_N_TERN'上的脉冲产生组件，其中至少一个第一补偿脉冲comp_pulse_p基本上是 与第一放大脉冲相同的宽度P，并且在与第一输出波形PWM_P_TERN'的至少一个脉冲的中心位置对应的位置处相加在第二输出波形PWM_N_TERN'上。
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公开(公告)号：US09151011B2
公开(公告)日：2015-10-06
申请号：US13186209
申请日：2011-07-19
摘要： A drilling method and device is for the execution of diaphragm walls by cutters, (131, 105, 110) carried by a frame (130) supported by suspension and movers (102). A guide hole (200) is formed as far as the depth specified in the design at the center of the panel to be made. Excavation is started with the introduction into the guide hole (200) of a guide element (101) that is fixed with respect to the tool-holder frame and having geometry such as to copy the guide hole along which it slides during excavation. Excavation is carried out as far as the depth specified in the design. The tool is extracted from the excavation and the excavation is filled with concrete and a panel is formed. The method is repeated so as to form adjacent panels.
摘要翻译： 钻孔方法和装置用于通过由悬架和移动器（102）支撑的框架（130）承载的切割器（131,105,110）来执行隔膜壁。 导向孔（200）形成为在要制造的面板的中心处的设计中指定的深度。 通过引入相对于工具架框架固定的引导元件（101）的引导孔（200）开始挖掘，并具有几何形状，以便在挖掘期间复制其滑动的引导孔。 挖掘是在设计中规定的深度进行的。 该挖掘工具从挖掘中抽出，挖掘中充满混凝土，形成一个面板。 重复该方法以形成相邻的面板。
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6.发明申请Method and Apparatus for Efficient and Distortion Compensated Digital Class-D Amplifier Ternary Modulation Scheme 有权用于高效和失真补偿的数字D类放大器三元调制方案和装置公开(公告)号：US20130222063A1
公开(公告)日：2013-08-29
申请号：US13881279
申请日：2011-10-18
申请人： Rossella Bassoli , Carlo Crippa
发明人： Rossella Bassoli , Carlo Crippa
CPC分类号： H03F1/3205 , H03F1/26 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F2200/03 , H03F2200/351 , H03K7/08
摘要： The present disclosure generally relates to the field of digital Class-D amplifiers and more specifically to a technique for reducing output waveforms distortion of a digital class-D amplifier implementing a ternary modulation scheme. An apparatus embodiment comprises an enlarging component for enlarging at least one pulse of a first output waveform PWM_P_TERN′ of the amplifier 50 by a first enlarging pulse, wherein the at least one pulse of the first output waveform PWM_P_TERN′ is symmetrically enlarged by the first enlarging pulse with respect to the centre position of the at least one pulse; and a pulses generating component for generating at least one first compensating pulse comp_pulse_p and for adding the generated at least one first compensating pulse comp_pulse_p on a second output waveform PWM_N_TERN′ of the amplifier 50, wherein the at least one first compensating pulse comp_pulse_p has substantially the same width P as the first enlarging pulse and is added on the second output waveform PWM_N_TERN′ at a position which corresponds to the centre position of the at least one pulse of the first output waveform PWM_P_TERN′.
摘要翻译： 本公开一般涉及数字D类放大器的领域，更具体地涉及一种用于减少实现三进制调制方案的数字D类放大器的输出波形失真的技术。 装置实施例包括用于通过第一放大脉冲放大放大器50的第一输出波形PWM_P_TERN'的至少一个脉冲的放大部件，其中通过第一放大对称地扩大第一输出波形PWM_P_TERN'的至少一个脉冲 相对于所述至少一个脉冲的中心位置的脉冲; 以及用于产生至少一个第一补偿脉冲comp_pulse_p并用于将所生成的至少一个第一补偿脉冲comp_pulse_p添加到放大器50的第二输出波形PWM_N_TERN'上的脉冲产生组件，其中至少一个第一补偿脉冲comp_pulse_p基本上是 与第一放大脉冲相同的宽度P，并且在与第一输出波形PWM_P_TERN'的至少一个脉冲的中心位置对应的位置处相加在第二输出波形PWM_N_TERN'上。
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公开(公告)号：US20120012391A1
公开(公告)日：2012-01-19
申请号：US13186209
申请日：2011-07-19
摘要： A drilling method and device is for the execution of diaphragm walls by cutters, (131, 105, 110) carried by a frame (130) supported by suspension and movers (102). A guide hole (200) is formed as far as the depth specified in the design at the center of the panel to be made. Excavation is started with the introduction into the guide hole (200) of a guide element (101) that is fixed with respect to the tool-holder frame and having geometry such as to copy the guide hole along which it slides during excavation. Excavation is carried out as far as the depth specified in the design. The tool is extracted from the excavation and the excavation is filled with concrete and a panel is formed. The method is repeated so as to form adjacent panels.
摘要翻译： 钻孔方法和装置用于通过由悬架和移动器（102）支撑的框架（130）承载的切割器（131,105,110）来执行隔膜壁。 导向孔（200）形成为在要制造的面板的中心处的设计中指定的深度。 通过引入相对于工具架框架固定的引导元件（101）的引导孔（200）开始挖掘，并具有几何形状，以便在挖掘期间复制其滑动的引导孔。 挖掘是在设计中规定的深度进行的。 该挖掘工具从挖掘中抽出，挖掘中充满混凝土，形成一个面板。 重复该方法以形成相邻的面板。
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