公开(公告)号：US4598173A

公开(公告)日：1986-07-01

申请号：US660591

申请日：1984-10-15

Applicant: Ramon C. W. Chea, Jr. ,  Kevin C. Keegan ,  Reddeppa N. Pothuri ,  Albert H. Lloyd, Jr.

Inventor： Ramon C. W. Chea, Jr. ,  Kevin C. Keegan ,  Reddeppa N. Pothuri ,  Albert H. Lloyd, Jr.

IPC: H04Q3/72 ,  H04M3/06 ,  H04M19/00 ,  H04M19/02 ,  H04M3/02

CPC classification number: H04M19/008

Abstract: An interface circuit for a subscriber line circuit employs a controllable amplifier including a switching converter. The switching converter includes a capacitor coupled across a two-wire subscriber line and supplies an auxiliary voltage to the line. The amplifier includes an input adder having an output coupled to the switching converter for controlling the magnitude of the auxiliary voltage with one input of the adder adapted to receive a feedback control signal which is developed by monitoring the voltage across the output. Another input to the adder receives line input signals for the line circuit. The amplifier is controlled in operation by an off hook detector which provides an output signal when the subscriber line goes off hook to cause the amplifier to operate and further includes ring control logic which is also coupled to the amplifier and activates the amplifier during the presence of a ring control signal. In this manner, the amplifier is operative only during an off hook condition of the line and during ringing generation. The amplifier, based on its structure in the line circuit, provides all basic line functions such as DC current, ringing, voice and remote metering signals.

Abstract translation: 用户线电路的接口电路采用包括开关转换器的可控放大器。 开关转换器包括耦合在两线用户线路上的电容器，并向线路提供辅助电压。 放大器包括输入加法器，其输出耦合到开关转换器，用于通过加法器的一个输入端控制辅助电压的大小，该输入端适于接收通过监视输出端的电压而开发的反馈控制信号。 加法器的另一个输入接收线路电路的线路输入信号。 放大器通过脱钩检测器进行控制，该断电检测器在用户线摘机以提供放大器工作时提供输出信号，并且还包括环形控制逻辑，其也耦合到放大器并且在存在 铃声控制信号。 以这种方式，放大器仅在线路的摘机状态和振铃发生期间操作。 放大器基于其线路电路结构，提供所有基本的线路功能，如直流电流，振铃，语音和远程测光信号。

公开(公告)号：US06671149B1

公开(公告)日：2003-12-30

申请号：US09677483

申请日：2000-09-28

Applicant: Ramon C. W. Chea, Jr. ,  P. Kingston Duffie ,  Harry Rodriguez ,  Robert Crofford

Inventor： Ramon C. W. Chea, Jr. ,  P. Kingston Duffie ,  Harry Rodriguez ,  Robert Crofford

IPC: H02H342

CPC classification number: H04M3/18

Abstract: The present invention discloses systems and methods for protecting electronic devices (switching and non-switching) such as micro electro-mechanical system (MEMS) devices and solid state relays due to lightning exposure or electrical power surges. An over voltage protector and an over current protector are used to limit the exposure of high voltages and currents to the MEMS devices and solid-state relays. A relay or equivalent device is energized when a high current is sensed in the loop, which relay is used to protect the MEMS devices and solid state relays from damage. The relay can be controlled via software/hardware and works in conjunction with other components/devices in the overall systems. In this manner, any number of MEMS devices or solid state relays can be protected.

Abstract translation: 本发明公开了由于雷电暴露或电力浪涌而保护诸如微机电系统（MEMS）装置和固态继电器的电子装置（开关和非开关）的系统和方法。 过电压保护器和过流保护器用于限制高电压和电流暴露于MEMS器件和固态继电器。 当在回路中检测到高电流时，继电器或等效设备通电，该继电器用于保护MEMS器件和固态继电器免受损坏。 继电器可以通过软件/硬件进行控制，并与整个系统中的其他组件/设备结合使用。 以这种方式，可以保护任何数量的MEMS器件或固态继电器。

公开(公告)号：US06553105B2

公开(公告)日：2003-04-22

申请号：US10137083

申请日：2002-04-30

Applicant: Ramon C. W. Chea, Jr. ,  P. Kingston Duffie

Inventor： Ramon C. W. Chea, Jr. ,  P. Kingston Duffie

IPC: H04M1100

CPC classification number: H04Q11/0421 ,  H04L43/50 ,  H04M3/2209 ,  H04M3/30 ,  H04M11/062 ,  H04M2203/056 ,  H04Q2213/13039 ,  H04Q2213/1316 ,  H04Q2213/1319 ,  H04Q2213/13298 ,  H04Q2213/13305 ,  H04Q2213/1332 ,  H04Q2213/13322

Abstract: The present invention is directed to a remotely actuated splitter bypass function (RASB) working in conjunction with a test head at the central office for testing and maintaining copper loops in the digital subscriber line environment. The RASB allows a competitive local exchange carrier to test and maintain the xDSL portion of the copper loop with minimal interference and disturbance to/from the plain old telephone system (POTS) service by bypassing the central office splitter. The splitter bypass operation includes the steps of selecting a copper loop pair for testing, actuating a first relay for monitor mode, actuating a second relay for bypass mode, testing the selected copper loop, and resetting the first and second relays back to normal mode. By applying positive and negative voltages from the tip and ring with respect to ground, various relays can be set (actuated) and reset to provide multiple modes of operations. In this manner, relays can be designed to respond in certain voltage levels and polarities.

公开(公告)号：US06343114B1

公开(公告)日：2002-01-29

申请号：US09476226

申请日：1999-12-30

Applicant: Ramon C. W. Chea, Jr.

Inventor： Ramon C. W. Chea, Jr.

IPC: H04M124

CPC classification number: H04M3/301 ,  H04M3/2209

Abstract: The invention presented herein is directed to a remotely addressable maintenance unit (RAMU) working in conjunction with a test head at the central office for detecting and locating faults in digital subscriber loop (DSL) and/or plain old telephone system (POTS) environments. The RAMU includes circuitry for setting and resetting one or more relays for either normal or testing/maintenance mode. The present invention provides a system and method for addressing the RAMU by applying either positive or negative voltages from the tip to ground, from ring to ground, and from tip and ring to ground. In this manner, individual RAMUs can be defined/designed to respond in certain voltage levels and polarities. Accurate fault detection and sectionalization is achieved by the combination of the addressing capabilities enumerated herein, and the impedance signature designed into the RAMU, working in concert with a test head in the central office.

Abstract translation: 本文提出的本发明涉及一种与中心局的测试头结合工作的可远程寻址维护单元（RAMU），用于检测和定位数字用户回路（DSL）和/或普通老式电话系统（POTS）环境中的故障​​。 RAMU包括用于设置和复位一个或多个继电器用于正常或测试/维护模式的电路。 本发明提供了一种用于通过从尖端到地面，从环到地，以及从尖端和环到地施加正或负电压来寻址RAMU的系统和方法。 以这种方式，可以将单个RAMU定义/设计成在某些电压电平和极性下进行响应。 通过将本文列举的寻址能力和设计到RAMU中的阻抗特征的组合实现精确的故障检测和分段，与中心局的测试头协调工作。

公开(公告)号：US06741675B2

公开(公告)日：2004-05-25

申请号：US09911550

申请日：2001-07-23

Applicant: Ramon C. W. Chea, Jr. ,  P. Kingston Duffle

Inventor： Ramon C. W. Chea, Jr. ,  P. Kingston Duffle

IPC: H04M124

CPC classification number: H04M3/2272 ,  H04M11/062

Abstract: The invention presented herein is directed to a battery injection and loop supervision (BILS) system and method that can be used in the DSL environment. The BILS of the present invention provides battery injection, loop supervision, and butt set operation mode detection in the DSL environment. A voltage source, detector and comparator in the BILS unit can be used to supervise the copper loop status from the central office. In addition, using the present invention, a field technician using a conventional butt set can detect battery voltage and receive an audible tone from the cooper loops in the DSL environment. Furthermore, the BILS can be implemented in accordance with two preferred embodiments, voltage sensing and current sensing. The BILS includes circuitry, working in conjunction with a shared common resource card and a conventional butt set, for testing, maintaining, and installing copper loops in the DSL environment.

Abstract translation: 本文提出的本发明涉及可以在DSL环境中使用的电池注入和环路监控（BILS）系统和方法。 本发明的BILS在DSL环境中提供电池注入，环路监控和对接设置操作模式检测。 BILS单元中的电压源，检测器和比较器可用于监控中心局的铜环状态。 此外，使用本发明，使用常规对接装置的现场技术人员可以检测电池电压并从DSL环境中的联合环路接收可听到的音调。 此外，BILS可以根据两个优选实施例来实施，电压感测和电流感测。 BILS包括与共享公共资源卡和常规对接组一起工作的电路，用于在DSL环境中测试，维护和安装铜环路。

公开(公告)号：US06700770B2

公开(公告)日：2004-03-02

申请号：US10104191

申请日：2002-03-22

Applicant: Ramon C. W. Chea, Jr.

Inventor： Ramon C. W. Chea, Jr.

IPC: H02H100

CPC classification number: H02H9/04 ,  H01H1/0036 ,  H04M3/18

Abstract: The present invention discloses systems and methods for protecting electronic devices (switching and non-switching) such as micro electro-mechanical system (MEMS) devices and solid state relays due to lightning exposure or electrical power surges in double end exposed systems. Over voltage suppressors and over current detectors are used to limit the exposure of high voltages and currents to the MEMS and solid-state relay devices in double end exposed systems.

Abstract translation: 本发明公开了用于保护电子设备（开关和非开关）的系统和方法，例如微机电系统（MEMS）装置和固态继电器，这是由于双端暴露系统中的雷电暴露或电力浪涌。 过电压抑制器和过电流检测器用于限制高端电压和电流对双端暴露系统中的MEMS和固态继电器的暴露。

公开(公告)号：US06683768B2

公开(公告)日：2004-01-27

申请号：US10072076

申请日：2002-02-06

Applicant: Ramon C. W. Chea, Jr.

Inventor： Ramon C. W. Chea, Jr.

IPC: H02H900

CPC classification number: H02N1/002 ,  H02H9/042 ,  H04M3/18

Abstract: The present invention discloses systems and methods for protecting electronic devices (switching and non-switching) such as micro electro-mechanical system (MEMS) devices and solid state relays due to lightning exposure or electrical power surges. An over voltage protector and an over current protector are used to limit the exposure of high voltages and currents to the MEMS devices and solid-state relays. A relay or equivalent device is energized when a high current is sensed in the loop, which relay is used to protect the MEMS devices and solid state relays from damage. The relay can be controlled via software/hardware and works in conjunction with other components/devices in the overall systems. In this manner, any number of MEMS devices or solid state relays can be protected.

Abstract translation: 本发明公开了由于雷电暴露或电力浪涌而保护诸如微机电系统（MEMS）装置和固态继电器的电子装置（开关和非开关）的系统和方法。 过电压保护器和过流保护器用于限制高电压和电流暴露于MEMS器件和固态继电器。 当在回路中检测到高电流时，继电器或等效设备通电，该继电器用于保护MEMS器件和固态继电器免受损坏。 继电器可以通过软件/硬件进行控制，并与整个系统中的其他组件/设备结合使用。 以这种方式，可以保护任何数量的MEMS器件或固态继电器。

公开(公告)号：US06292540B1

公开(公告)日：2001-09-18

申请号：US09493342

申请日：2000-01-28

Applicant: Ramon C. W. Chea, Jr. ,  P. Kingston Duffle

Inventor： Ramon C. W. Chea, Jr. ,  P. Kingston Duffle

IPC: H04M124

CPC classification number: H04M3/30 ,  H04B3/46 ,  H04M3/2209

Abstract: The invention presented herein is directed to a battery injection and loop supervision (BILS) system and method that can be used in the DSL environment. The BILS of the present invention provides battery injection, loop supervision, and butt set operation mode detection in the DSL environment. A voltage source, detector and comparator in the BILS unit can be used to supervise the copper loop status from the central office. In addition, using the present invention, a field technician using a conventional butt set can detect battery voltage and receive an audible tone from the cooper loops in the DSL environment. Furthermore, the BILS can be implemented in accordance with two preferred embodiments, voltage sensing and current sensing. The BILS includes circuitry, working in conjunction with a shared common resource card and a conventional butt set, for testing, maintaining, and installing copper loops in the DSL environment.

Abstract translation: 本文提出的本发明涉及可以在DSL环境中使用的电池注入和环路监控（BILS）系统和方法。 本发明的BILS在DSL环境中提供电池注入，环路监控和对接设置操作模式检测。 BILS单元中的电压源，检测器和比较器可用于监控中心局的铜环状态。 此外，使用本发明，使用常规对接装置的现场技术人员可以检测电池电压并从DSL环境中的联合环路接收可听到的音调。 此外，BILS可以根据两个优选实施例来实施，电压感测和电流感测。 BILS包括与共享公共资源卡和常规对接组一起工作的电路，用于在DSL环境中测试，维护和安装铜环路。

公开(公告)号：US4674119A

公开(公告)日：1987-06-16

申请号：US598650

申请日：1984-04-10

Applicant: Ramon C. W. Chea, Jr.

Inventor： Ramon C. W. Chea, Jr.

IPC: H03F3/217 ,  H02M3/335 ,  H03F3/20 ,  H04M19/00 ,  H04Q3/42 ,  H04B3/00

CPC classification number: H04M19/008 ,  H02M3/33507 ,  Y02B70/1483

Abstract: A wide band high voltage and high power amplifier is particularly useful for telephony applications. The amplifier employs a flyback converter with the capacitor storage element coupled across the line. The subscriber line is characterized in having a definite load impedance which impedance is in parallel with the storage capacitor of the flyback converter. The subscriber lines are monitored by a differential amplifier which provides a single-ended output indicative of the levels across the lines. This output is summed with the input signal to develop an error signal. The input signal to the line circuit is the particular signal of concern such as ringing, the voice signal and so on. The error signal is supplied as one input to a comparator having another input coupled to a triangular reference waveform. The output of the comparator provides a pulse width modulated waveform where the width of the pulses are indicative of the error signal. These pulses are applied to a transistor coupled to the primary winding of the transformer associated with the flyback converter to enable flyback operation during the pulse and hence to transfer energy to the storage capacitor as a function of the error signal.

Abstract translation: 宽带高压和高功率放大器对于电话应用特别有用。 放大器采用反激式转换器，电容器存储元件跨过线耦合。 用户线的特征在于具有确定的负载阻抗，该阻抗与反激转换器的存储电容器并联。 用户线由差分放大器监控，差分放大器提供指示跨线路上的电平的单端输出。 该输出与输入信号相加以产生误差信号。 线路电路的输入信号是特定的信号，例如振铃，语音信号等。 误差信号作为一个输入提供给具有耦合到三角形参考波形的另一个输入的比较器。 比较器的输出提供脉冲宽度调制波形，其中脉冲宽度表示误差信号。 这些脉冲被施加到耦合到与反激转换器相关联的变压器的初级绕组的晶体管，以在脉冲期间实现回扫操作，并因此根据误差信号将能量传递到存储电容器。

公开(公告)号：US4656659A

公开(公告)日：1987-04-07

申请号：US756879

申请日：1985-07-18

Applicant: Ramon C. W. Chea, Jr.

Inventor： Ramon C. W. Chea, Jr.

IPC: H04M3/06 ,  H04M19/02 ,  H04M3/02

CPC classification number: H04M19/023

Abstract: A digitally controlled ring signal generator includes a plurality of ring signal generating sources providing a plurality of inputs to each of a plurality of ring circuits. Each input is an a.c. signal superimposed on a d.c. bias that is greater than or equal to the peak voltage of the a.c. signal.

Abstract translation: 数字控制的环形信号发生器包括多个环形信号发生源，其为多个环形电路中的每一个提供多个输入。 每个输入都是a.c. 信号叠加在直流电 大于或等于交流电压峰值电压的偏压。 信号。