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1. 发明授权

US06920218B1 Combination clock and charge pump for line powered DAA 失效
标题翻译：组合时钟和电源泵，用于线路供电DAA
公开(公告)号：US06920218B1
公开(公告)日：2005-07-19
申请号：US09192651
申请日：1998-11-16
申请人： Timothy W. Fuehrer , Keith E. Hollenbach , Donald R. Laturell , Steven B. Witmer
发明人： Timothy W. Fuehrer , Keith E. Hollenbach , Donald R. Laturell , Steven B. Witmer
IPC分类号： H04M19/08 , H04M1/00 , H04M9/00
CPC分类号： H04M19/08
摘要： Disclosed is a method and apparatus which facilitates the use of existing power that is ordinarily unused or discarded to provide power to a telephone interface circuit when the circuit is in the on-hook state, thereby alleviating the need to use loop current to power the interface during the on-hook state. Existing clock signals are used to charge capacitors that are normally used for capacitive coupling of digital data across the high voltage isolation barrier. Although only small-value capacitors are needed for transmitting data across the capacitive interface, larger-value capacitors are used and are configured to form a charge pump to generate power to the interface at all times. Thus the interface always has a steady source of power available for use, including during the on-hook state for powering circuitry that can detect, modulate, and transmit on-hook signals across the capacitive interface.
摘要翻译：公开了一种方法和装置，其有助于当电路处于挂机状态时通常未被使用或丢弃的现有电力用于向电话接口电路提供电力，从而减轻了使用环路电流来为接口供电的需要在挂机状态。现有的时钟信号用于对通常用于跨高压隔离屏障的数字数据的电容耦合的电容器进行充电。尽管只需要小值电容器来跨越电容接口传输数据，但是使用较大值的电容器，并且配置为形成电荷泵，以始终向接口产生功率。因此，该接口始终具有可用于使用的稳定的电源，包括在挂机状态下为能够检测，调制和传送电容接口上的挂机信号的电路供电。

2. 发明授权

US07912210B2 Inductive coupling for communications equipment interface circuitry 有权
标题翻译：用于通信设备接口电路的感应耦合
公开(公告)号：US07912210B2
公开(公告)日：2011-03-22
申请号：US12187456
申请日：2008-08-07
申请人： Timothy W. Fuehrer , Donald R. Laturell , Lane A. Smith , Christopher J. Wittensoldner
发明人： Timothy W. Fuehrer , Donald R. Laturell , Lane A. Smith , Christopher J. Wittensoldner
IPC分类号： H04M1/00
CPC分类号： H04L25/0266 , H04M11/06
摘要： A system for improving the attenuation of an undesired signal found in a differential signal path through the use of inductive coupling. The system includes a primary inductor, a secondary inductor, and a filter. The primary inductor and the secondary inductor operably couple an input differential signal pair to an output differential signal pair, and the filter attenuates an undesired signal in the output differential signal pair.
摘要翻译：一种用于通过使用电感耦合来改善在差分信号路径中发现的不期望信号的衰减的系统。该系统包括初级电感器，次级电感器和滤波器。主电感器和次级电感器将输入差分信号对可操作地耦合到输出差分信号对，并且滤波器衰减输出差分信号对中的不期望信号。

3. 发明申请

US20090028320A1 INDUCTIVE COUPLING FOR COMMUNICATIONS EQUIPMENT INTERFACE CIRCUITRY 有权
标题翻译：用于通信设备接口电路的感应耦合
公开(公告)号：US20090028320A1
公开(公告)日：2009-01-29
申请号：US12187456
申请日：2008-08-07
申请人： Timothy W. Fuehrer , Donald Raymond Laturell , Lane A. Smith , Christopher J. Wittensoldner
发明人： Timothy W. Fuehrer , Donald Raymond Laturell , Lane A. Smith , Christopher J. Wittensoldner
IPC分类号： H04M3/22
CPC分类号： H04L25/0266 , H04M11/06
摘要： A system for improving the attenuation of an undesired signal found in a differential signal path through the use of inductive coupling. The system includes a primary inductor, a secondary inductor, and a filter. The primary inductor and the secondary inductor operably couple an input differential signal pair to an output differential signal pair, and the filter attenuates an undesired signal in the output differential signal pair.
摘要翻译：一种用于通过使用电感耦合来改善在差分信号路径中发现的不期望信号的衰减的系统。该系统包括初级电感器，次级电感器和滤波器。主电感器和次级电感器将输入差分信号对可操作地耦合到输出差分信号对，并且滤波器衰减输出差分信号对中的不期望信号。

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