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公开(公告)号：US20120068867A1
公开(公告)日：2012-03-22
申请号：US13304588
申请日：2011-11-25
摘要： Provided are, among other things, systems, methods and techniques for converting a continuous-time, continuously variable signal into a sampled and quantized signal. According to one representative embodiment, an apparatus includes multiple quantization-noise-shaping continuous-time filters, each in a separate processing branch and having an adder that includes multiple inputs and an output; an input signal is coupled to one of the inputs of the adder; the output of the adder is coupled to one of the inputs of the adder through a first filter; and the output of a sampling/quantization circuit in the same processing branch is coupled to one of the inputs of the adder through a second filter, with the second filter having a different transfer function than the first filter.
摘要翻译： 尤其提供了用于将连续时间连续可变信号转换为采样和量化信号的系统，方法和技术。 根据一个代表性实施例，一种装置包括多个量化噪声整形连续时间滤波器，每个滤波器在单独的处理分支中并具有包括多个输入和输出的加法器; 输入信号耦合到加法器的一个输入端; 加法器的输出通过第一滤波器耦合到加法器的一个输入端; 并且相同处理支路中的采样/量化电路的输出通过第二滤波器耦合到加法器的一个输入端，第二滤波器具有与第一滤波器不同的传递函数。
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公开(公告)号：US20180049673A1
公开(公告)日：2018-02-22
申请号：US15679236
申请日：2017-08-17
CPC分类号： A61B5/1076 , A61B5/4504 , A61B90/06 , A61B2034/2051 , A61B2034/2063 , A61B2090/061 , A61B2090/062 , G01B3/28
摘要： Provided are, among other things, systems, apparatuses methods and techniques for performing a semi-autonomous and/or autonomous measurement of the depth of a hole drilled into bone during a medical/surgical procedure. One such apparatus is activated by a tactile command, provides a digital readout of hole depth, and includes a controller module, a stepper/encoder unit, a linear actuator, and a position sensor.
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公开(公告)号：US20100328125A1
公开(公告)日：2010-12-30
申请号：US12824171
申请日：2010-06-26
IPC分类号： H03M3/00
摘要： Provided are, among other things, systems, methods and techniques for converting a continuous-time, continuously variable signal into a sampled and quantized signal. According to one representative embodiment, an apparatus includes multiple quantization-noise-shaping continuous-time filters, each in a separate processing branch and having an adder that includes multiple inputs and an output; an input signal is coupled to one of the inputs of the adder; the output of the adder is coupled to one of the inputs of the adder through a first filter; and the output of a sampling/quantization circuit in the same processing branch is coupled to one of the inputs of the adder through a second filter, with the second filter having a different transfer function than the first filter.
摘要翻译： 尤其提供了用于将连续时间连续可变信号转换为采样和量化信号的系统，方法和技术。 根据一个代表性实施例，一种装置包括多个量化噪声整形连续时间滤波器，每个滤波器在单独的处理分支中并具有包括多个输入和输出的加法器; 输入信号耦合到加法器的一个输入端; 加法器的输出通过第一滤波器耦合到加法器的一个输入端; 并且相同处理支路中的采样/量化电路的输出通过第二滤波器耦合到加法器的一个输入端，第二滤波器具有与第一滤波器不同的传递函数。
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公开(公告)号：US08604957B2
公开(公告)日：2013-12-10
申请号：US13304588
申请日：2011-11-25
IPC分类号： H03M3/00
摘要： Provided are, among other things, systems, methods and techniques for converting a continuous-time, continuously variable signal into a sampled and quantized signal. According to one representative embodiment, an apparatus includes multiple quantization-noise-shaping continuous-time filters, each in a separate processing branch and having an adder that includes multiple inputs and an output; an input signal is coupled to one of the inputs of the adder; the output of the adder is coupled to one of the inputs of the adder through a first filter; and the output of a sampling/quantization circuit in the same processing branch is coupled to one of the inputs of the adder through a second filter, with the second filter having a different transfer function than the first filter.
摘要翻译： 尤其提供了用于将连续时间连续可变信号转换为采样和量化信号的系统，方法和技术。 根据一个代表性实施例，一种装置包括多个量化噪声整形连续时间滤波器，每个滤波器在单独的处理分支中并具有包括多个输入和输出的加法器; 输入信号耦合到加法器的一个输入端; 加法器的输出通过第一滤波器耦合到加法器的一个输入端; 并且相同处理支路中的采样/量化电路的输出通过第二滤波器耦合到加法器的一个输入端，第二滤波器具有与第一滤波器不同的传递函数。
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公开(公告)号：US08299947B2
公开(公告)日：2012-10-30
申请号：US12985238
申请日：2011-01-05
IPC分类号： H03M3/00
摘要： Provided are, among other things, systems, methods and techniques for converting a continuous-time, continuously variable signal into a sampled and quantized signal. According to one representative embodiment, an apparatus includes multiple continuous-time quantization-noise-shaping circuits, each in a separate processing branch and having an adder that includes multiple inputs and an output; an input signal is coupled to one of the inputs of the adder; the output of the adder is coupled to one of the inputs of the adder through a first filter; and the output of a sampling/quantization circuit in the same processing branch is coupled to one of the inputs of the adder through a second filter, with the second filter having a different transfer function than the first filter.
摘要翻译： 尤其提供了用于将连续时间连续可变信号转换为采样和量化信号的系统，方法和技术。 根据一个代表性实施例，一种装置包括多个连续时间量化噪声整形电路，每个电路分开处理分支并具有包括多个输入和输出的加法器; 输入信号耦合到加法器的一个输入端; 加法器的输出通过第一滤波器耦合到加法器的一个输入端; 并且相同处理支路中的采样/量化电路的输出通过第二滤波器耦合到加法器的一个输入端，第二滤波器具有与第一滤波器不同的传递函数。
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6.发明授权Conversion of a discrete time quantized signal into a continuous time, continuously variable signal 有权将离散时间量化信号转换为连续时间，连续可变信号公开(公告)号：US08294605B1
公开(公告)日：2012-10-23
申请号：US13400019
申请日：2012-02-17
IPC分类号： H03M1/66
CPC分类号： H03M3/30 , H03M1/747 , H03M3/358 , H03M3/50 , H03M3/502 , H03M7/3026 , H03M7/3033
摘要： Provided are, among other things, systems, apparatuses, methods and techniques for converting a discrete-time quantized signal into a continuous-time, continuously variable signal. An exemplary converter preferably includes: (1) multiple oversampling converters, each processing a different frequency band, operated in parallel; (2) multirate (i.e., polyphase) delta-sigma modulators (preferably second-order or higher); (3) multi-bit quantizers; (4) multi-bit-to-variable-level signal converters, such as resistor ladder networks or current source networks; (5) adaptive nonlinear, bit-mapping to compensate for mismatches in the multi-bit-to-variable-level signal converters (e.g., by mimicking such mismatches and then shifting the resulting noise to a frequently range where it will be filtered out by a corresponding bandpass (reconstruction) filter); (6) multi-band (e.g., programmable noise-transfer-function response) bandpass delta-sigma modulators; and/or (7) a digital pre-distortion linearizer (DPL) for canceling noise and distortion introduced by an analog signal bandpass (reconstruction) filter bank.
摘要翻译： 尤其提供了用于将离散时间量化信号转换成连续时间连续可变信号的系统，装置，方法和技术。 示例性转换器优选地包括：（1）多个过采样转换器，每个处理不同的频带，并行操作; （2）多速率（即多相）Δ-Σ调制器（优选二阶或更高）; （3）多位量化器; （4）多位到可变电平信号转换器，如电阻梯形网络或电流源网络; （5）自适应非线性比特映射以补偿多比特到可变电平信号转换器中的不匹配（例如，通过模拟这样的失配，然后将所得到的噪声移动到频率范围，其中将被滤波掉 相应的带通（重建）滤波器）; （6）多频带（例如可编程噪声传递函数响应）带通Δ-Σ调制器; 和/或（7）用于消除由模拟信号带通（重构）滤波器组引入的噪声和失真的数字预失真线性化器（DPL）。
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7.发明授权Conversion of a discrete time quantized signal into a continuous time, continuously variable signal 有权将离散时间量化信号转换为连续时间，连续可变信号公开(公告)号：US08264390B2
公开(公告)日：2012-09-11
申请号：US12970379
申请日：2010-12-16
IPC分类号： H03M1/66
CPC分类号： H03M3/50 , H03M3/358 , H03M3/502 , H03M7/3026 , H03M7/3033
摘要： Provided are, among other things, systems, apparatuses, methods and techniques for converting a discrete-time quantized signal into a continuous-time, continuously variable signal. An exemplary converter preferably includes: (1) multiple oversampling converters, each processing a different frequency band, operated in parallel; (2) multirate (i.e., polyphase) delta-sigma modulators (preferably second-order or higher); (3) multi-bit quantizers; (4) multi-bit-to-variable-level signal converters, such as resistor ladder networks or current source networks; (5) adaptive non-linear, bit-mapping to compensate for mismatches in the multi-bit-to-variable-level signal converters (e.g., by mimicking such mismatches and then shifting the resulting noise to a frequently range where it will be filtered out by a corresponding bandpass (reconstruction) filter); (6) multi-band (e.g., programmable noise-transfer-function response) bandpass delta-sigma modulators; and/or (7) a digital pre-distortion linearizer (DPL) for canceling noise and distortion introduced by an analog signal bandpass (reconstruction) filter bank.
摘要翻译： 尤其提供了用于将离散时间量化信号转换成连续时间连续可变信号的系统，装置，方法和技术。 示例性转换器优选地包括：（1）多个过采样转换器，每个处理不同的频带，并行操作; （2）多速率（即多相）Δ-Σ调制器（优选二阶或更高）; （3）多位量化器; （4）多位到可变电平信号转换器，如电阻梯形网络或电流源网络; （5）自适应非线性比特映射以补偿多比特到可变等级信号转换器中的不匹配（例如，通过模拟这种不匹配，然后将所得到的噪声移动到将被滤波的频繁范围） 通过相应的带通（重建）滤波器）; （6）多频带（例如可编程噪声传递函数响应）带通Δ-Σ调制器; 和/或（7）用于消除由模拟信号带通（重构）滤波器组引入的噪声和失真的数字预失真线性化器（DPL）。
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公开(公告)号：US20120127009A1
公开(公告)日：2012-05-24
申请号：US13363517
申请日：2012-02-01
IPC分类号： H03M3/00
摘要： Provided are, among other things, systems, apparatuses, methods and techniques for converting a continuous-time, continuously variable signal into a sampled and quantized signal. One such apparatus includes an input line for accepting an input signal that is continuous in time and continuously variable, multiple processing branches coupled to the input line, and an adder coupled to outputs of the processing branches. Each of the processing branches includes a continuous-time quantization-noise-shaping circuit, a sampling/quantization circuit coupled to an output of the continuous-time quantization-noise-shaping circuit, a digital bandpass filter coupled to an output of the sampling/quantization circuit, and a line coupling an output of the digital-to-analog converter circuit back into the continuous-time quantization-noise-shaping circuit. A center frequency of the digital bandpass filter in each the processing branch corresponds to a minimum in a quantization noise transfer function for the continuous-time quantization-noise-shaping circuit in the same processing branch.
摘要翻译： 尤其提供了用于将连续时间连续可变信号转换成采样和量化信号的系统，装置，方法和技术。 一种这样的装置包括用于接受在时间上连续且连续可变的输入信号的输入线，耦合到输入线的多个处理分支以及耦合到处理分支的输出的加法器。 每个处理分支包括连续时间量化噪声整形电路，耦合到连续时间量化噪声整形电路的输出的采样/量化电路，耦合到采样/量化噪声整形电路的输出的数字带通滤波器， 量化电路和将数模转换器电路的输出耦合回连续时间量化噪声整形电路的线路。 每个处理分支中的数字带通滤波器的中心频率对应于相同处理分支中连续时间量化噪声整形电路的量化噪声传递函数中的最小值。
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公开(公告)号：US20220077826A1
公开(公告)日：2022-03-10
申请号：US17443473
申请日：2021-07-27
摘要： Provided are, among other things, systems, apparatuses methods and techniques for converting digital data to radio-frequency (RF) signals. One such apparatus includes a reactive-impedance network within which the levels of multiple binary waveforms are individually boosted, before being combined to produce a single, composite output signal.
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公开(公告)号：US10335057B2
公开(公告)日：2019-07-02
申请号：US15679236
申请日：2017-08-17
摘要： Provided are, among other things, systems, apparatuses methods and techniques for performing a semi-autonomous and/or autonomous measurement of the depth of a hole drilled into bone during a medical/surgical procedure. One such apparatus is activated by a tactile command, provides a digital readout of hole depth, and includes a controller module, a stepper/encoder unit, a linear actuator, and a position sensor.
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