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    • 1. 发明授权
    • Method and system for externally incorporating automatic switching between voice and data communications
    • 用于外部融合语音和数据通信之间自动切换的方法和系统
    • US06307880B1
    • 2001-10-23
    • US08957711
    • 1997-10-24
    • John P. EvansShayne Messerly
    • John P. EvansShayne Messerly
    • H04B144
    • H04M11/066
    • A method and apparatus for automatically switching between voice and data communications as directed by a voice and data capable modem via a cable assembly incorporating a switching means for facilitating and inhibiting the routing of voice information to a voice telephone. A voice and data capable modem incorporates the software functionality associated with a voice and data capable protocol with minimal impact to the form factor associated with the modem, To reduce the impact to the form factor associated with integrated modem designs, the switching hardware associated with voice and data capability is incorporated into a cable assembly used to interconnect the voice and data capable modem with the voice telephone. Additional means for identifying the cable assembly as having the requisite switching functionality is also provided.
    • 一种用于通过包含用于促进和禁止语音信息到语音电话的路由的切换装置的电缆组件由语音和数据能力调制解调器指导的语音和数据通信之间自动切换的方法和装置。 具有语音和数据能力的调制解调器包含与语音和数据能力协议相关联的软件功能,对与调制解调器相关联的形式影响的影响最小。为了减少与集成调制解调器设计相关联的形式因素的影响,与语音相关联的交换硬件 并且数据能力被并入用于将具有语音和数据的调制解调器与语音电话相互连接的电缆组件中。 还提供了用于将电缆组件识别为具有必要的切换功能的附加装置。
    • 6. 发明授权
    • Systems and methods for impedance synthesis
    • 用于阻抗合成的系统和方法
    • US06859051B1
    • 2005-02-22
    • US10452373
    • 2003-06-02
    • Spiro PoulisJohn EvansShayne Messerly
    • Spiro PoulisJohn EvansShayne Messerly
    • H04B1/58G01R27/08H03L5/00H04M1/24
    • H04B1/58
    • The present invention synthesizes a prescribed impedance. The impedance is synthesized by generating a current having a value substantially equal to a voltage divided by a prescribed impedance. Sensing the line voltage and converting that sensed line voltage to its digital equivalent accomplish this first step. The digital line voltage is processed by a factor related to the prescribed impedance to produce an output voltage that has a value substantially equal to the sensed voltage divided by the prescribed impedance. The output voltage controls a voltage to current converter that generates the appropriate current across the points or terminals where the line voltage was measured. Thus, the prescribed impedance is generated across these points or terminals because the line voltage divided by the generated current is substantially equal to the prescribed impedance.
    • 本发明合成规定的阻抗。 通过产生具有基本上等于被规定阻抗除以的电压的值的电流来合成阻抗。 感测线路电压并将感测到的线路电压转换为其数字等效电压完成了第一步。 数字线路电压由与规定阻抗相关的因子处理,以产生具有基本上等于感测电压除以规定阻抗的值的输出电压。 输出电压控制电压到电流转换器,其在测量线路电压的点或端子处产生适当的电流。 因此,由于产生的电流除以的线电压基本上等于规定的阻抗,所以在这些点或端子之间产生规定的阻抗。
    • 7. 发明授权
    • Transfer function implementation using digital impedance synthesis
    • 使用数字阻抗合成的传递函数实现
    • US06338077B1
    • 2002-01-08
    • US09321899
    • 1999-05-28
    • Spiro PoulisJohn EvansShayne Messerly
    • Spiro PoulisJohn EvansShayne Messerly
    • G06J100
    • H03H17/02
    • A system and circuit is provided for digitally synthesizing the impedance of a transfer function. The impedance of the transfer function is digitally synthesized by generating a current that, when combined with an input voltage, results in the impedance of the transfer function. This is accomplished by sensing the input signal and processing it with a generator or multiplier such that a voltage is produced. The produced voltage controls a current source and creates a current having a value equal to the inverse of the transfer function impedance. The sensed or input voltage divided by the generated current is equal to the impedance of the transfer function. In this manner, many different transfer functions can be digitally synthesized without having to design an alternate circuit.
    • 提供了一种用于数字合成传递函数的阻抗的系统和电路。 传递函数的阻抗通过产生与输入电压组合导致传递函数的阻抗的电流数字合成。 这通过感测输入信号并用发生器或乘法器来处理,从而产生电压来实现。 产生的电压控制电流源并产生具有等于传递函数阻抗的倒数的值的电流。 感测或输入电压除以发电电流等于传递函数的阻抗。 以这种方式,可以数字地合成许多不同的传递函数,而不必设计备用电路。
    • 8. 发明授权
    • Methods and apparatus for adaptive filters
    • 自适应滤波器的方法和装置
    • US06308192B1
    • 2001-10-23
    • US09201351
    • 1998-11-30
    • Shayne Messerly
    • Shayne Messerly
    • G06F1710
    • H03H21/0012
    • The present invention relates to improved adaptive filtering techniques and architectures. Preferably, this filtering is performed as part of the digital processing that occurs with a digital signal processor. It is a feature of this invention that the adaptive filtering taught herein provides the advantages of both serial and parallel architectures, without the accompanying disadvantages thereof. In particular, an adaptive filter is taught that possesses low pin counts, fast processing times suitable for high-speed applications and reduced numbers of filter elements. In a preferred embodiment, the inputs and outputs of the adaptive filter are supplied to and from the adaptive filter in a serial manner while the processing is performed internally within the adaptive filter in a parallel manner. The parallel processing is preferably effected by a delayed least-means-squares algorithm implemented using a single adder, a single multiplier and a single multiplier-accumulator instead of by numerous such adders, multipliers and multiplier-accumulators.
    • 本发明涉及改进的自适应滤波技术和架构。 优选地,该滤波作为数字信号处理器发生的数字处理的一部分来执行。 本发明的一个特征是本文教导的自适应滤波器提供了串行和并行架构的优点,而没有其伴随的缺点。 特别地,教导了具有低引脚数,适合于高速应用的快速处理时间和减少数量的滤波器元件的自适应滤波器。 在优选实施例中,自适应滤波器的输入和输出以串行方式提供给自适应滤波器,并且在自适应滤波器内部以并行方式执行处理。 并行处理优选地通过使用单个加法器,单个乘法器和单个乘法器累加器而不是由许多这样的加法器,乘法器和乘法器累加器实现的延迟最小均方算法来实现。