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    Analog sampling processor
    3.
    发明授权
    Analog sampling processor 失效
    模拟采样处理器

    公开(公告)号：US6166567A

    公开(公告)日：2000-12-26

    申请号：US487463

    申请日：2000-01-19

    申请人： Rob McCullough

    发明人： Rob McCullough

    IPC分类号： G11C27/02 ,  H03H19/00 ,  H03K5/00

    CPC分类号： G11C27/026 ,  G11C27/024 ,  H03H19/004

    摘要： An analog sampling processor includes an analog sampling filter, a sample amplitude comparison circuit, a switch and switch control circuitry. The analog sampling filter filters a filter input signal to produce a filtered signal. The sample amplitude comparison circuit compares amplitude of the input signal and the filtered signal to produce a comparator signal. The switch samples a processor input signal to produce a sampled signal. The switch control circuitry receives the comparator signal and input from a sampling control signal. The switch control circuitry combines the comparator signal from the sampling control signal to generate a control signal that controls the sampling characteristics of the switch.

    摘要翻译： 模拟采样处理器包括模拟采样滤波器，采样幅度比较电路，开关和开关控制电路。 模拟采样滤波器滤波滤波器输入信号以产生滤波信号。 采样幅度比较电路比较输入信号和滤波信号的幅度以产生比较器信号。 开关采样处理器输入信号以产生采样信号。 开关控制电路从采样控制信号接收比较器信号和输入。 开关控制电路组合来自采样控制信号的比较器信号以产生控制开关的采样特性的控制信号。

    Analog sampling filters
    4.
    发明授权
    Analog sampling filters 失效
    模拟采样滤波器

    公开(公告)号：US6072360A

    公开(公告)日：2000-06-06

    申请号：US976825

    申请日：1997-11-24

    申请人： Rob McCullough

    发明人： Rob McCullough

    IPC分类号： G11C27/02 ,  H03H19/00 ,  H03K5/00

    CPC分类号： G11C27/026 ,  G11C27/024 ,  H03H19/004

    摘要： A low pass filter includes an input, an output, a storage means, a switching means and a control means. The input receives an input signal. An output signal is generated on the output. The storage means is a sample storage element, for example, a capacitance. A first end of the storage means is connected to the output. The switching means is connected between the first end of the storage means and the input. The switching means, when closed, electrically connects the input to the first end of the storage means. When open, the switching means electrically isolates the input from the first end of the storage means. The control means controls the switching means. The control means generates a switching control signal. The switching control signal has a sampling frequency. The capacitance provided by the capacitance means and a pulse width of the switching control signal are selected so that a maximum cutoff frequency of the low pass filter is less than the sampling frequency divided by two. Other filter configurations are constructed from the low pass filter.

    摘要翻译： 低通滤波器包括输入，输出，存储装置，切换装置和控制装置。 输入接收输入信号。 在输出端产生输出信号。 存储装置是样本存储元件，例如电容。 存储装置的第一端连接到输出端。 开关装置连接在存储装置的第一端和输入端之间。 切换装置在闭合时将输入端电连接到存储装置的第一端。 当打开时，开关装置将输入与存储装置的第一端电隔离。 控制装置控制切换装置。 控制装置产生开关控制信号。 开关控制信号具有采样频率。 选择由电容装置提供的电容和开关控制信号的脉冲宽度，使得低通滤波器的最大截止频率小于采样频率除以2。 其他滤波器配置由低通滤波器构成。

    Notch filter implemented using analog sampling
    7.
    发明授权
    Notch filter implemented using analog sampling 失效
    陷波滤波器采用模拟采样实现

    公开(公告)号：US06320459B2

    公开(公告)日：2001-11-20

    申请号：US09739729

    申请日：2000-12-18

    申请人： Rob McCullough

    发明人： Rob McCullough

    IPC分类号： H04B110

    CPC分类号： G11C27/024 ,  G11C27/026 ,  H03H19/004

    摘要： A filter system includes a low pass filter, a first summer circuit, a second low pass filter and a second summer circuit. The first low pass filter includes an input, an output, a storage means, a switching means and a control means. An input signal is placed on the input. An output signal is generated on the output. The storage means provides storage of a signal sample over time. The switching means, when closed, electrically couples the input to the first end of the storage means. The switching means, when open electrically isolates the input from the first end of the storage means. The control means controls the switching means. The control means generates a switching control signal. The switching control signal has a sampling frequency. A maximum cutoff frequency of the low pass filter is dependent on a value of a capacitance provided by the storage means, the sampling frequency, and a pulse width of the switching control signal. The first summer circuit subtracts the output signal from the input signal to produce a high pass output signal. The second low pass filter receives the high pass output signal and produces a bandpass filtered output. The second summer circuit subtracts the bandpass filtered output from the input signal to produce a notch filtered output.

    摘要翻译： 滤波器系统包括低通滤波器，第一加法电路，第二低通滤波器和第二加法电路。 第一低通滤波器包括输入，输出，存储装置，开关装置和控制装置。 输入信号放在输入端。 在输出端产生输出信号。 存储装置随时间提供信号样本的存储。 切换装置在闭合时将输入端电耦合到存储装置的第一端。 开关装置当打开时将输入与存储装置的第一端电隔离。 控制装置控制切换装置。 控制装置产生开关控制信号。 开关控制信号具有采样频率。 低通滤波器的最大截止频率取决于由存储装置提供的电容值，采样频率和开关控制信号的脉冲宽度。 第一个夏季电路从输入信号中减去输出信号，产生高通输出信号。 第二低通滤波器接收高通输出信号并产生带通滤波输出。 第二个夏季电路从输入信号中减去带通滤波输出，产生陷波滤波输出。