公开(公告)号：US08437111B1

公开(公告)日：2013-05-07

申请号：US12272427

申请日：2008-11-17

申请人： Jared D. Cress ,  Daniel M. Joffe

发明人： Jared D. Cress ,  Daniel M. Joffe

IPC分类号： H02H9/02

CPC分类号： H04M11/062

摘要： A current limiter in one exemplary embodiment of the present disclosure has a protection element that protects a current limiting element from excessive power dissipation. The protection element senses a parameter that is indicative of an amount of power being dissipated by the current limiting element. The protection element controls the current limiting element based on the sensed parameter such that power dissipation for the current limiting element is reduced to a safe level during a fault condition thereby protecting the current limiting element from damage during the fault condition.

摘要翻译： 在本公开的一个示例性实施例中的限流器具有保护元件，其保护限流元件免于过度的功率耗散。 保护元件感测指示由电流限制元件耗散的功率量的参数。 保护元件基于感测的参数来控制电流限制元件，使得限流元件的功率消耗在故障状态期间降低到安全水平，从而保护限流元件在故障状态期间的损坏。

公开(公告)号：US09614976B2

公开(公告)日：2017-04-04

申请号：US13437700

申请日：2012-04-02

申请人： Daniel M. Joffe ,  Jared D. Cress

发明人： Daniel M. Joffe ,  Jared D. Cress

IPC分类号： H04M11/06 ,  H04M19/00 ,  H04L12/28

CPC分类号： H04M11/062 ,  H04L12/2878 ,  H04M19/001

摘要： A communication system has a network access device (NAD) that is designed to deliver Plain Old Telephone Service (POTS) along with high-speed data to Customer Premises Equipment (CPE). The NAD is backpowered by the CPE across a subscriber line. When backpower is provided from the CPE, circuitry (referred to as a “POTS signaling element”) within the network access device converts POTS control signaling to digital data for transmission to the CPE. The band vacated by the POTS control signaling is used for the power signal on the subscriber line. In the absence of backpower, components of the network access device are bypassed, thereby providing POTS in the event of a power failure. The NAD receives advance warning of the backpowering so that it can disable the bypassing in order to prevent the power signal from leaking through the NAD to the network.

公开(公告)号：US09380152B2

公开(公告)日：2016-06-28

申请号：US14659014

申请日：2015-03-16

申请人： Daniel M. Joffe ,  Jared D. Cress

发明人： Daniel M. Joffe ,  Jared D. Cress

IPC分类号： H04M1/24 ,  H04M3/08 ,  H04M3/22 ,  H04M3/26 ,  H04M7/00 ,  H04M19/00 ,  H04M19/08

CPC分类号： H04M3/2209 ,  H04M3/2272 ,  H04M3/26 ,  H04M7/0084 ,  H04M19/001 ,  H04M19/08

摘要： A combination of algorithms and circuits are used to combine POTS, high-speed bi-directional data, and back-powering onto the drop connection for fiber to the distribution point architectures. A telephone adapter device can be utilized to prevent damage from back-powering occurring at POTS telephones connected to the drop connection. In addition, circuits are used to prevent damage from back-powering occurring at POTS telephones directly connected to the drop connection. A circuit is used to provide more consistent power to the electronics at the distribution point even when the input back-power to the distribution point may fluctuate.

摘要翻译： 算法和电路的组合用于将POTS，高速双向数据和反向功率组合到用于光纤的分支点的分支点架构上。 可以使用电话适配器装置来防止在连接到插座连接的POTS电话上发生的后向电源的损坏。 此外，电路用于防止在直接连接到放电连接的POTS电话上发生后退电源的损坏。 即使当分配点的输入反向功率可能波动时，电路也用于向分配点的电子设备提供更一致的电力。

公开(公告)号：US20150264171A1

公开(公告)日：2015-09-17

申请号：US14659014

申请日：2015-03-16

申请人： Daniel M. Joffe ,  Jared D. Cress

发明人： Daniel M. Joffe ,  Jared D. Cress

IPC分类号： H04M3/22 ,  H04M7/00 ,  H04M19/00 ,  H04M3/26

CPC分类号： H04M3/2209 ,  H04M3/2272 ,  H04M3/26 ,  H04M7/0084 ,  H04M19/001 ,  H04M19/08

摘要： A combination of algorithms and circuits are used to combine POTS, high-speed bi-directional data, and back-powering onto the drop connection for fiber to the distribution point architectures. A telephone adapter device can be utilized to prevent damage from back-powering occurring at POTS telephones connected to the drop connection. In addition, circuits are used to prevent damage from back-powering occurring at POTS telephones directly connected to the drop connection. A circuit is used to provide more consistent power to the electronics at the distribution point even when the input back-power to the distribution point may fluctuate.

摘要翻译： 算法和电路的组合用于将POTS，高速双向数据和反向功率组合到用于光纤的分支点的分支点架构上。 可以使用电话适配器装置来防止在连接到插座连接的POTS电话上发生的后向电源的损坏。 此外，电路用于防止在直接连接到放电连接的POTS电话上发生后退电源的损坏。 即使当分配点的输入反向功率可能波动时，电路也用于向分配点的电子设备提供更一致的电力。

公开(公告)号：US20120250840A1

公开(公告)日：2012-10-04

申请号：US13437700

申请日：2012-04-02

申请人： Daniel M. Joffe ,  Jared D. Cress

发明人： Daniel M. Joffe ,  Jared D. Cress

IPC分类号： H04M11/00

CPC分类号： H04M11/062 ,  H04L12/2878 ,  H04M19/001

摘要： A communication system has a network access device (NAD) that is designed to deliver Plain Old Telephone Service (POTS) along with high-speed data to Customer Premises Equipment (CPE). The NAD is backpowered by the CPE across a subscriber line. When backpower is provided from the CPE, circuitry (referred to as a “POTS signaling element”) within the network access device converts POTS control signaling to digital data for transmission to the CPE. The band vacated by the POTS control signaling is used for the power signal on the subscriber line. In the absence of backpower, components of the network access device are bypassed, thereby providing POTS in the event of a power failure. The NAD receives advance warning of the backpowering so that it can disable the bypassing in order to prevent the power signal from leaking through the NAD to the network.

摘要翻译： 通信系统具有网络接入设备（NAD），其被设计成将普通老式电话服务（POTS）以及高速数据传送到客户端设备（CPE）。 NAD在用户线路上由CPE支持。 当从CPE提供反向功率时，网络接入设备内的电路（称为POTS信令元件）将POTS控制信令转换为数字数据，以传输到CPE。 由POTS控制信令腾出的频带用于用户线上的功率信号。 在没有反向功率的情况下，网络接入设备的组件被旁路，从而在电源故障的情况下提供POTS。 NAD接收到反向强制的提前警告，以便它可以禁止旁路，以防止电源信号通过NAD泄漏到网络。

公开(公告)号：US08027461B1

公开(公告)日：2011-09-27

申请号：US11870979

申请日：2007-10-11

申请人： Jared D. Cress ,  Daniel M. Joffe

发明人： Jared D. Cress ,  Daniel M. Joffe

IPC分类号： H04M9/00

CPC分类号： H04M11/062

摘要： A telecommunication system has a telecommunication line for communicating a combined signal and a splitter that is coupled to the telecommunication line. The splitter has a high-pass filter, a low-pass filter, and a current limiter. The high-pass filter is configured to transmit a first component signal of the combined signal, and the low-pass filter is configured to transmit a second component signal of the combined signal. The current limiter is configured to limit a current of the second component signal thereby preventing at least one inductor in the low-pass filter from saturating.

摘要翻译： 电信系统具有用于传送组合信号的电信线路和耦合到电信线路的分路器。 分路器具有高通滤波器，低通滤波器和限流器。 高通滤波器被配置为发送组合信号的第一分量信号，并且低通滤波器被配置为发送组合信号的第二分量信号。 电流限制器被配置为限制第二分量信号的电流，从而防止低通滤波器中的至少一个电感器饱和。

公开(公告)号：US20130251363A1

公开(公告)日：2013-09-26

申请号：US13786636

申请日：2013-03-06

申请人： Daniel M. Joffe ,  Leif J. Sandstrom

发明人： Daniel M. Joffe ,  Leif J. Sandstrom

IPC分类号： H04B10/071

CPC分类号： H04B10/071 ,  G01M11/3118 ,  G01M11/3154

摘要： An optical communication system has a power dissipating element that is thermally coupled to an optical transmitter. The currents supplied to the transmitter and the power dissipating element are controlled such that the sum of such currents is constant. Accordingly, temperature fluctuations in the transmitter due to patterns in the transmitted data are prevented or at least reduced, thereby reducing thermal tails on measurements. In one exemplary embodiment, a light source is used as the power dissipating element, and the output of such light source is beneficially used to probe another optical fiber or to enhance the OTDR performance or analysis.

摘要翻译： 光通信系统具有热耦合到光发射机的功率耗散元件。 控制提供给发射器和功率耗散元件的电流，使得这些电流之和恒定。 因此，防止或至少减少了由于传输数据中的图案而导致的发射机中的温度波动，从而减少了测量时的热尾迹。 在一个示例性实施例中，光源用作功率耗散元件，并且这种光源的输出有利地用于探测另一光纤或增强OTDR性能或分析。

公开(公告)号：US08432226B1

公开(公告)日：2013-04-30

申请号：US13179297

申请日：2011-07-08

申请人： Daniel M. Joffe

发明人： Daniel M. Joffe

IPC分类号： H03F1/14

CPC分类号： H03F3/45085 ,  H03F1/14

摘要： An amplifier circuit has an input stage, a current mirror stage, and an output stage. The output stage has a transistor for which a non-linear and/or linear Miller capacitance exists across the transistor. A capacitive element, referred to herein as a “negative Miller capacitor,” is coupled between an input node of the current mirror stage and the transistor's collector or drain causing the current flowing through the negative Miller capacitor to be inverted, supplying the current taken by the usual Miller capacitance of the output stage. Thus, the negative Miller capacitor cancels the usual Miller capacitance across the transistor of the output stage, and such cancellation occurs without significantly increasing the amplifier's input power and costs. In some embodiments, both linear and non-linear components of the usual Miller capacitor are cancelled. Further, cancellation of the Miller capacitance generally enhances bandwidth and reduces distortion, thereby improving the performance of the operational amplifier.

摘要翻译： 放大电路具有输入级，电流镜级和输出级。 输出级具有晶体管，晶体管在晶体管两端存在非线性和/或线性米勒电容。 电容元件（这里称为“负的米勒电容器”）耦合在电流镜级的输入节点和晶体管的集电极或漏极之间，导致流过负的米勒电容器的电流被反相，从而提供由 输出级通常的米勒电容。 因此，负的米勒电容器消除了输出级晶体管两端通常的米勒电容，并且这种消除不会显着增加放大器的输入功率和成本。 在一些实施例中，通常的米勒电容器的线性和非线性分量均被消除。 此外，取消米勒电容通常会增加带宽并减少失真，从而提高运算放大器的性能。

公开(公告)号：US08400220B1

公开(公告)日：2013-03-19

申请号：US13211068

申请日：2011-08-16

申请人： Daniel M. Joffe ,  Paul C. Ferguson

发明人： Daniel M. Joffe ,  Paul C. Ferguson

IPC分类号： H03F3/18

CPC分类号： H03F3/45237 ,  H03F1/301 ,  H03F1/3211 ,  H03F3/3028 ,  H03F3/45659 ,  H03F2200/453 ,  H03F2200/456 ,  H03F2203/45674

摘要： Quiescent current control for Class AB output stages is provided that is responsive to a sum of current of the pull-up and pull-down transistors in the crossover region, and responsive to a minimum of the pull-up or pull-down transistors otherwise. Replicating transistors operate responsive to activation of the pull-up and pull-down transistors. Additional circuit elements provide a summed current output that corrects for quiescent current variation, while having good operation over PVT variations, and having minimal distortive effects. Use of scaled replicating transistors reduces the current in the quiescent current control circuit. Additionally, a current limiter or topology change may be used to reduce current spikes in replication of the output stage current. Adjustment of a reference current can also prevent turning off a non-active output element to reduce the need to stew the element back on.

摘要翻译： 提供AB类输出级的静态电流控制，其响应于交叉区域中的上拉和下拉晶体管的电流之和，否则响应于最小的上拉或下拉晶体管。 复制晶体管响应于上拉和下拉晶体管的激活而工作。 附加电路元件提供校正静态电流变化的总和电流输出，同时对PVT变化具有良好的操作，并且具有最小的失真效应。 使用经缩放的复制晶体管降低了静态电流控制电路中的电流。 另外，可以使用电流限制器或拓扑变化来减少输出级电流的复制中的电流尖峰。 参考电流的调整还可以防止关闭非有效输出元件，以减少重新启动元件的需要。

公开(公告)号：US08243412B2

公开(公告)日：2012-08-14

申请号：US12430694

申请日：2009-04-27

申请人： James B. Wiese ,  Daniel M. Joffe

发明人： James B. Wiese ,  Daniel M. Joffe

IPC分类号： H01C7/12 ,  H02H11/00

CPC分类号： H04L12/2881 ,  H02H9/008

摘要： The present disclosure generally pertains to surge protection systems that protect outside plant equipment from high-energy surges. In one exemplary embodiment, a protection system is used for protecting Ethernet equipment that is coupled to an outside Ethernet cable. The protection system provides protection and remains capable of coupling signal energy between an Ethernet cable and Ethernet equipment without significantly degrading Ethernet performance. However, the protection system, while allowing the desirable Ethernet signals to pass between the cable and the equipment, prevents the electrical voltages and currents of high-energy surges, such as surges from lightning or AC power faults, from damaging the Ethernet equipment.

摘要翻译： 本公开通常涉及用于保护设备外部设备免受高能量浪涌的浪涌保护系统。 在一个示例性实施例中，保护系统用于保护耦合到外部以太网电缆的以太网设备。 保护系统提供保护，并且仍然能够在以太网电缆和以太网设备之间耦合信号能量，而不会显着降低以太网性能。 然而，保护系统在允许希望的以太网信号在电缆和设备之间通过时，可防止诸如闪电或AC电源故障的高能量浪涌的电压和电流损坏以太网设备。