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1. 发明授权

US06859051B1 Systems and methods for impedance synthesis 有权
标题翻译：用于阻抗合成的系统和方法
公开(公告)号：US06859051B1
公开(公告)日：2005-02-22
申请号：US10452373
申请日：2003-06-02
申请人： Spiro Poulis , John Evans , Shayne Messerly
发明人： Spiro Poulis , John Evans , Shayne Messerly
IPC分类号： H04B1/58 , G01R27/08 , H03L5/00 , H04M1/24
CPC分类号： H04B1/58
摘要： 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.
摘要翻译：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。

2. 发明授权

US06338077B1 Transfer function implementation using digital impedance synthesis 失效
标题翻译：使用数字阻抗合成的传递函数实现
公开(公告)号：US06338077B1
公开(公告)日：2002-01-08
申请号：US09321899
申请日：1999-05-28
申请人： Spiro Poulis , John Evans , Shayne Messerly
发明人： Spiro Poulis , John Evans , Shayne Messerly
IPC分类号： G06J100
CPC分类号： H03H17/02
摘要： 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.
摘要翻译：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。

3. 发明授权

US08472614B2 Attenuation and termination circuit using impedance synthesis 有权
标题翻译：衰减和终端电路使用阻抗合成
公开(公告)号：US08472614B2
公开(公告)日：2013-06-25
申请号：US12644201
申请日：2009-12-22
申请人： Spiro Poulis , John Evans , Shayne Messerly
发明人： Spiro Poulis , John Evans , Shayne Messerly
IPC分类号： H04M1/00 , H04M9/00
CPC分类号： H04M1/7385 , H04M11/066
摘要： The present invention discloses circuits for isolating and attenuating signals generated by a telephone network. In disclosed embodiments, a metering pulse signal is isolated from the terminals of the connecting device, and then attenuated with an impedance that is synthesized with a programmable digital signal processor. Embodiments also utilize the digital signal processor to synthesize a termination impedance for the connecting device. The termination impedance matches closely the characteristic impedance of the network, so as to minimize wave reflections and the like.
摘要翻译：本发明公开了一种用于隔离和衰减由电话网络产生的信号的电路。在所公开的实施例中，计量脉冲信号与连接装置的端子隔离，然后用与可编程数字信号处理器合成的阻抗衰减。实施例还利用数字信号处理器来合成连接装置的终端阻抗。终端阻抗与网络的特性阻抗密切相关，以便最小化波反射等。

4. 发明授权

US07660408B1 Attenuation and termination circuit using impedance synthesis 有权
标题翻译：衰减和终端电路使用阻抗合成
公开(公告)号：US07660408B1
公开(公告)日：2010-02-09
申请号：US09560581
申请日：2000-04-28
申请人： Spiro Poulis , John Evans , Shayne Messerly
发明人： Spiro Poulis , John Evans , Shayne Messerly
IPC分类号： H04M1/00 , H04M9/00
CPC分类号： H04M1/7385 , H04M11/066
摘要： The present invention discloses circuits for isolating and attenuating signals generated by a telephone network. In disclosed embodiments, a metering pulse signal is isolated from the terminals of the connecting device, and then attenuated with an impedance that is synthesized with a programmable digital signal processor. Embodiments also utilize the digital signal processor to synthesize a termination impedance for the connecting device. The termination impedance matches closely the characteristic impedance of the network, so as to minimize wave reflections and the like.
摘要翻译：本发明公开了一种用于隔离和衰减由电话网络产生的信号的电路。在所公开的实施例中，计量脉冲信号与连接装置的端子隔离，然后用与可编程数字信号处理器合成的阻抗衰减。实施例还利用数字信号处理器来合成连接装置的终端阻抗。终端阻抗与网络的特性阻抗密切相关，以便最小化波反射等。

5. 发明授权

US06697485B1 Data signal attenuator and systems and methods for using same 失效
标题翻译：数据信号衰减器及其使用方法
公开(公告)号：US06697485B1
公开(公告)日：2004-02-24
申请号：US09189964
申请日：1998-11-10
申请人： Spiro Poulis , John Evans , Shayne Messerly
发明人： Spiro Poulis , John Evans , Shayne Messerly
IPC分类号： H04M100
CPC分类号： H04M1/76
摘要： The present invention provides apparatus and methods for attenuating signals received from a source over a data transmission line, having an unknown resistance, to achieve optimized signals in various data terminal and data communications equipment. In a preferred embodiment, a resistor network is operably coupled between the transmission line and a means for processing the signal, such as a digital processor, an ADC and a DAC. The resistor network comprises a termination resistor that is associated with a termination voltage, a variable resistor and another resistor. During use, a switch is operably positioned between a plurality of switch positions so that two voltage measurements will lead to the determination of the voltage of the source and the termination voltage within the resistor network. Once these voltages are known, the unknown resistance can be estimated. Thereafter, the length of the transmission line may be determined because of known resistance-per-unit-distance characteristics of the transmission line. In response to knowing this length, the digital processor selects a desired resistance value for the variable resistor so that, upon adjustment of the variable resistor by the DAC, the signal becomes a largest-possible input at the ADC.
摘要翻译：本发明提供用于衰减在数据传输线上从源接收的具有未知电阻的信号的装置和方法，以在各种数据终端和数据通信设备中实现优化的信号。在优选实施例中，电阻网络可操作地耦合在传输线和用于处理信号的装置之间，诸如数字处理器，ADC和DAC。电阻网络包括与终端电压相关联的终端电阻器，可变电阻器和另一个电阻器。在使用期间，开关可操作地定位在多个开关位置之间，使得两个电压测量将导致确定电阻器网络内的电源电压和终止电压。一旦这些电压已知，可以估计未知电阻。此后，由于传输线的已知电阻 - 单位 - 距离特性，可以确定传输线的长度。响应于知道该长度，数字处理器为可变电阻器选择期望的电阻值，使得在通过DAC调节可变电阻器时，该信号在ADC处变为最大可能的输入。

6. 发明授权

US06700387B1 Systems and methods for impedance synthesis 失效
标题翻译：用于阻抗合成的系统和方法
公开(公告)号：US06700387B1
公开(公告)日：2004-03-02
申请号：US10449636
申请日：2003-05-30
申请人： Spiro Poulis , John Evans , Shayne Messerly
发明人： Spiro Poulis , John Evans , Shayne Messerly
IPC分类号： G01R3108
CPC分类号： H04B1/58
摘要： 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.
摘要翻译：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

US06573729B1 Systems and methods for impedance synthesis 失效
标题翻译：用于阻抗合成的系统和方法
公开(公告)号：US06573729B1
公开(公告)日：2003-06-03
申请号：US09649188
申请日：2000-08-28
申请人： Spiro Poulis , John Evans , Shayne Messerly
发明人： Spiro Poulis , John Evans , Shayne Messerly
IPC分类号： G01R3102
CPC分类号： H04B1/58
摘要： 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.
摘要翻译：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。

8. 发明授权

US06567472B1 System and method for terminating a line by reflecting a scaled impedance 失效
标题翻译：通过反映缩放阻抗来终止线路的系统和方法
公开(公告)号：US06567472B1
公开(公告)日：2003-05-20
申请号：US09320485
申请日：1999-05-26
申请人： Spiro Poulis , John Evans
发明人： Spiro Poulis , John Evans
IPC分类号： H04B308
CPC分类号： H04L25/0278 , H04L25/0272
摘要： The present invention provides a line termination circuit for matching the characteristic impedance of a transmission line, or more generally, a network. The present invention receives the voltage as present on the transmission line and attenuates it such that circuit components rated for lower voltages may be used to produce the reflected impedance. The attenuated voltage is placed across a scaled impedance which results in a reflected impedance substantially equal to the characteristic impedance of the transmission line. The line termination circuit uses a feedback loop to reflect the ground referenced scaled impedance across the transmission lines. The circuit generates a current having a value of one over the characteristic impedance of the network, which ensures that the reflected impedance, from the network, is substantially equal to the characteristic impedance of the network.
摘要翻译：本发明提供一种线路终端电路，用于匹配传输线路的特征阻抗，或更一般地，网络。本发明接收存在于传输线上的电压并使其衰减，使得额定为较低电压的电路组件可用于产生反射阻抗。衰减的电压跨越比例的阻抗放置，导致反射阻抗基本上等于传输线的特性阻抗。线路终端电路使用反馈回路来反映跨传输线路的地面参考的按比例的阻抗。该电路产生一个超过网络的特性阻抗值的电流，这确保了来自网络的反射阻抗基本上等于网络的特性阻抗。

9. 发明授权

US06377667B1 Telephone line-assist powered apparatus with programmable hold current 有权
标题翻译：具有可编程保持电流的电话线路辅助供电设备
公开(公告)号：US06377667B1
公开(公告)日：2002-04-23
申请号：US09268610
申请日：1999-03-15
申请人： Spiro Poulis , John Evans , Shane Messerly
发明人： Spiro Poulis , John Evans , Shane Messerly
IPC分类号： H04M1100
CPC分类号： H04L12/10 , H04M11/06
摘要： A power management circuit for use in a terminal interface device such as a modem which converts available power from a terminal or host device such as a computer into usable standby power for use when the terminal interface device is non-operational. The power management circuit is additionally comprised of a voltage regulator which, when a terminal interface device becomes operational, is enabled and regulates available voltage and current into usable power as available from the interfacing communication network. The preferred embodiment of the power management circuit is further comprised of a programmable hold current generator which enables a terminal interface device incorporating the power management circuit to be compatible with multiple communication networks having diverse hold current specifications. The use of power available from the communication network in generating the operational voltage greatly reduces interference injected onto the communication network.
摘要翻译：一种用于诸如调制解调器的终端接口设备的电源管理电路，其将终端或诸如计算机的主机设备的可用功率转换为当终端接口设备不可操作时使用的可用备用电力。电源管理电路还包括电压调节器，当终端接口设备变得可操作时，电压调节器被启用，并且将可用的电压和电流调节到可从接口通信网络获得的可用功率。功率管理电路的优选实施例还包括可编程保持电流发生器，其使得结合功率管理电路的终端接口设备能够与具有不同保持电流规格的多个通信网络兼容。在通信网络中使用可用于产生操作电压的电力大大降低了注入到通信网络上的干扰。

10. 发明授权

US06654461B1 Synthesized telephone line ring signal impedance termination 失效
标题翻译：合成电话线路振铃信号阻抗终止
公开(公告)号：US06654461B1
公开(公告)日：2003-11-25
申请号：US09395633
申请日：1999-09-14
申请人： Spiro Poulis , John Evans
发明人： Spiro Poulis , John Evans
IPC分类号： H04M704
CPC分类号： H04M3/04
摘要： Provided is a circuit for terminating a ring signal of a telephone network. A physical impedance is combined with a synthesized impedance to produce an impedance having a magnitude substantially equal to the ring termination impedance of a telephone network. The synthesized impedance is created by generating a current from a voltage controlled current source. By controlling the magnitude of the generated current, the magnitude of the synthesized impedance is also controlled. Because the specified ring termination impedances are known, a satisfactory impedance can be synthesized which results in the ring signal being properly terminated.
摘要翻译：提供了用于终止电话网络的振铃信号的电路。物理阻抗与合成阻抗组合以产生具有基本上等于电话网络的环路终端阻抗的幅度的阻抗。通过从电压控制电流源产生电流来产生合成阻抗。通过控制发电电流的大小，也控制合成阻抗的幅度。由于指定的环形终端阻抗是已知的，所以可以合成令人满意的阻抗，这导致环形信号正确地终止。

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