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公开(公告)号：US5225789A
公开(公告)日：1993-07-06
申请号：US870472
申请日：1992-04-17
IPC分类号： H03F3/217
CPC分类号： H03F3/2171
摘要： A four quadrant current mode switching amplifier is provided. The switching amplifier includes a pulse width modulator (PWM) programmed by an error voltage derived from an analog input voltage and the amplified output voltage. The PWM is also provided with negative current mode feedback in all four quadrants of operation. A logic device controls the switching topology to source, or sink power for the load and to provide negative or positive output in dependence upon sign and slope bits, derived from the input and output voltages, and the PWM output.
摘要翻译： 提供四象限电流模式开关放大器。 开关放大器包括通过从模拟输入电压导出的误差电压和放大的输出电压编程的脉宽调制器（PWM）。 在所有四个运算象限中，PWM还提供负电流模式反馈。 逻辑器件控制开关拓扑到源，或为负载吸收功率，并根据输入和输出电压以及PWM输出导出的符号和斜率位提供负或正输出。
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公开(公告)号：US06466572B1
公开(公告)日：2002-10-15
申请号：US09325619
申请日：1999-06-03
IPC分类号： H04L1266
CPC分类号： H04B10/272 , H04L12/2856 , H04L12/2872 , H04L12/2898 , H04L12/44 , H04L49/205 , H04L49/351 , H04L49/357 , H04M7/122 , Y10S370/901
摘要： A technique for multiplexing high speed computed data with digitized voice signals onto a fiber optic cable for transfer to a local central office. The data packets of a number of computers are networked by way of a distributed hub that extends to residences, offices, apartments, etc. The data packets are switched outside the switching fabric of a local central office and routed to the internet or elsewhere. Command signals that are for accessing the internet are transmitted and received as 10 MHz Ethernet data packets on the distributed hub.
摘要翻译： 一种用于将高速计算数据与数字化语音信号复用到光纤电缆上用于传送到本地中心局的技术。 许多计算机的数据包通过扩展到住宅，办公室，公寓等的分布式集线器进行网络连接。数据包在本地中心局的交换结构外部切换并路由到互联网或其他地方。 用于访问互联网的命令信号在分布式集线器上作为10 MHz以太网数据包发送和接收。
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公开(公告)号：US06707833B1
公开(公告)日：2004-03-16
申请号：US09539395
申请日：2000-03-31
申请人： Mahlon D. Kimbrough
发明人： Mahlon D. Kimbrough
IPC分类号： H01S313
CPC分类号： H01S5/0683 , H01S5/042
摘要： A digital laser driver circuit is provided in which a digital synthesizer synthesizes a modulation index signal for precisely setting the modulation level of the laser, and a pair of feedback loops control the average power level and modulation index of the laser diode. The laser diode includes a back-facet photodiode that is used to monitor the laser's average and peak optical power levels. The average power level is measured by an analog feedback loop and compared to an externally supplied reference voltage in order to maintain the laser at a particular average optical power level. The peak power is measured by a digital feedback loop and compared to a pair of threshold levels based on a ratio of the average power level using digital comparators. The comparators provide signals to the digital synthesizer in order to indicate that the modulation level is too low or too high. The digital synthesizer then re-synthesizes the laser modulation index signal to maintain the optical modulation between the two threshold levels.
摘要翻译： 提供一种数字激光驱动器电路，其中数字合成器合成用于精确设置激光器的调制电平的调制指数信号，并且一对反馈回路控制激光二极管的平均功率电平和调制指数。 激光二极管包括用于监视激光器的平均和峰值光功率电平的背面光电二极管。 平均功率电平由模拟反馈回路测量，并与外部提供的参考电压进行比较，以便将激光器保持在特定的平均光功率水平。 峰值功率通过数字反馈回路测量，并且基于使用数字比较器的平均功率电平的比率与一对阈值电平进行比较。 比较器向数字合成器提供信号，以指示调制电平太低或太高。 数字合成器然后重新合成激光调制指数信号，以将光调制保持在两个阈值水平之间。
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4.发明授权Voltage controlled oscillator for a transmission line communications system receiver 失效用于传输线通信系统接收机的压控振荡器
公开(公告)号：US4253180A
公开(公告)日：1981-02-24
申请号：US966146
申请日：1978-12-04
申请人： Mahlon D. Kimbrough
发明人： Mahlon D. Kimbrough
摘要： A voltage controlled oscillator which may be used in the receiver of a communications system, such as a carrier telephone system, for aiding in the demodulation of received carrier signals. The oscillator includes circuitry for generating first and second reference signals at a frequency equal to the carrier signal. Also included in the oscillator is circuitry which in response to the magnitude of an error signal variably connects a frequency determining electrical parameter to the frequency generating circuitry to thereby vary the frequency of the reference signals. The error signal magnitude represents the difference in phase between the carrier signal and the first reference signal.
摘要翻译： 可用于诸如载波电话系统的通信系统的接收机中用于辅助解调所接收的载波信号的压控振荡器。 振荡器包括用于以等于载波信号的频率产生第一和第二参考信号的电路。 还包括在振荡器中的电路响应于误差信号的大小可变地将频率确定电参数连接到频率发生电路，从而改变参考信号的频率。 误差信号幅度表示载波信号和第一参考信号之间的相位差。
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公开(公告)号：US4213015A
公开(公告)日：1980-07-15
申请号：US966000
申请日：1978-12-04
申请人： Mahlon D. Kimbrough
发明人： Mahlon D. Kimbrough
摘要： A power failure alarm circuit for a transmission line communications system such as a telephone system having means for transmitting and receiving carrier signals connected to a trunk line at an end central office. The alarm circuit monitors the power level of a selected number of the different frequency carriers received on the trunk line and generates an alarm condition signal when the combined power levels fall below a predetermined magnitude. The carrier signal receiving means responds to the alarm condition signal to release the subscribers. After a predetermined delay, the alarm circuit generates an alarm busy signal and the receiving means responds by forcing the trunk lines busy to prevent seizure by new callers. The alarm circuit also monitors the level of power being sent to signal repeaters connected to the trunk line and generates an enable signal when said power is lost. The transmitting means responds to the enable signal by pulsing the carrier signals to signal another end central office of the alarm condition.
摘要翻译： 一种用于诸如电话系统的传输线通信系统的电力故障报警电路，具有用于发送和接收连接到终端中心局的中继线的载波信号的装置。 报警电路监视在中继线路上接收到的选定数量的不同频率载波的功率电平，并且当组合功率电平低于预定量值时产生报警条件信号。 载波信号接收装置响应报警条件信号以释放用户。 在预定的延迟之后，报警电路产生报警忙信号，并且接收装置通过强制中继线繁忙来防止新呼叫者卡住。 报警电路还监控发送到连接到中继线的信号中继器的电力电平，并在所述电源丢失时产生使能信号。 发送装置通过脉冲载波信号来响应使能信号，以向另一个中心局通知警报状况。
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6.发明授权公开(公告)号：US07941559B2
公开(公告)日：2011-05-10
申请号：US10420024
申请日：2003-04-21
IPC分类号： G06F13/00
CPC分类号： H04L29/12018 , H04L29/12584 , H04L29/12839 , H04L61/10 , H04L61/2596 , H04L61/6022
摘要： A media access control (MAC) layer address translation system is included in a fiber to the home (FTTH) system having a central office that interfaces a packet data network with a passive optical network (PON). The (MAC) layer address translation system includes a home network unit (HNU), a host system, and a MAC address table. The HNU is coupled to the PON and has an associated base MAC layer address and an associated secondary MAC layer address that identify the HNU within the PON. The host system is coupled in a network to the HNU and has an associated host MAC layer address that identifies the host system within the network. The MAC address table is stored in a memory device, and associates the host MAC layer address with the secondary MAC layer address. Upon receiving an outgoing transmission from the host system that includes the host MAC layer address, the HNU accesses the MAC address table to determine the secondary MAC layer address that is associated with the host MAC layer address and modifies the outgoing transmission to replace the host MAC layer address with the secondary MAC layer address.
摘要翻译： 媒体访问控制（MAC）层地址转换系统包括在具有将分组数据网络与无源光网络（PON）接口的中心局的家庭（FTTH）系统的光纤中。 （MAC）层地址转换系统包括家庭网络单元（HNU），主机系统和MAC地址表。 HNU耦合到PON，并且具有相关联的基MAC层地址和标识PON内的HNU的相关联的次MAC层地址。 主机系统在网络中耦合到HNU，并且具有标识网络内的主机系统的相关主机MAC层地址。 MAC地址表存储在存储设备中，并将主MAC层地址与辅MAC层地址相关联。 在从主机系统接收到包含主机MAC层地址的输出传输之后，HNU访问MAC地址表以确定与主机MAC层地址相关联的辅助MAC层地址，并修改传出传输以替换主机MAC 层地址与辅MAC层地址。
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7.发明申请公开(公告)号：US20080174922A1
公开(公告)日：2008-07-24
申请号：US11655349
申请日：2007-01-19
申请人： Mahlon D. Kimbrough
发明人： Mahlon D. Kimbrough
IPC分类号： H02H3/08
摘要： A ground fault interrupt (GFI) circuit detects and interrupts a ground fault, even in the presence of AC power induced currents. The GFI circuit can be used for power delivery between nodes in a network, such as from a central office to remote network equipment. The GFI circuit meets GFI specifications covering such an application. The GFI circuit detects rapid changes and slow rises in ground fault current. Safety features, such as intermittent interruptions of power on power lines in an event of a ground fault, are supported by the GFI circuit to protect field personnel. A digital processor may be used to implement aspects of the GFI circuit to support changes of or various operating environments.
摘要翻译： 即使存在交流电源感应电流，接地故障中断（GFI）电路检测并中断接地故障。 GFI电路可以用于网络中的节点之间的功率传递，例如从中心局到远程网络设备。 GFI电路符合涵盖此类应用的GFI规范。 GFI电路检测到快速变化和接地故障电流缓慢上升。 GFI电路支持安全功能，例如在接地故障情况下间歇性中断电源线上的电源，以保护现场人员。 数字处理器可用于实现GFI电路的各方面以支持各种操作环境的改变。
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8.发明授权Method and apparatus for converting electrical signals and optical signals for bidirectional communication over a single optical fiber 有权用于通过单个光纤转换用于双向通信的电信号和光信号的方法和装置公开(公告)号：US06535308B1
公开(公告)日：2003-03-18
申请号：US09249733
申请日：1999-02-12
IPC分类号： H04B1000
CPC分类号： H04B10/43
摘要： Circuitry for controlling a diode optically coupled to an optical fiber suitable for transmitting digital light signals therethrough. The circuitry includes a temperature compensated driver when operating in the transmit mode and receiving circuitry for conditioning and amplifying electrical signals generated by the diode when it operates in a photodetection mode. A sweep circuit is provided for isolating amplifiers in the receiving circuitry and for discharging residual charge left in the diode during the transmission mode thereby reducing the signal-to-noise ratio.
摘要翻译： 用于控制光耦合到适于透射数字光信号的光纤的二极管的电路。 当在发射模式下工作时，电路包括温度补偿驱动器，以及接收电路，用于调节和放大当二极管工作在光电检测模式时由二极管产生的电信号。 提供扫描电路用于隔离接收电路中的放大器，并且用于在传输模式期间放电留在二极管中的剩余电荷，从而降低信噪比。
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公开(公告)号：US20080158920A1
公开(公告)日：2008-07-03
申请号：US11646199
申请日：2006-12-27
IPC分类号： H02M3/335
CPC分类号： H02J9/061
摘要： An energy storage system and corresponding method, provides an efficient use of stored energy and more regulated power to an output terminal in the event of an interruption in line input power. In one embodiment, an energy storage system has a pulse width modulation (PWM) DC-DC converter module configured to convert line input power to a first regulated output at an output terminal. A pump storage module is coupled to the PWM DC-DC converter module at the output terminal and stores energy from the first regulated output and converts the stored energy to a second regulated output. The energy storage system has a logic unit coupled to the converter module to cause the converter module and pump storage module to transition power at the output terminal from the first regulated output power to the second regulated output power in an event of interruption in the line input power.
摘要翻译： 在线路输入功率中断的情况下，能量存储系统和相应的方法提供对存储的能量的有效利用和对输出终端的更稳定的电力。 在一个实施例中，能量存储系统具有脉冲宽度调制（PWM）DC-DC转换器模块，其被配置为将线路输入功率转换到输出端子处的第一调节输出。 泵存储模块在输出端耦合到PWM DC-DC转换器模块，并存储来自第一调节输出的能量，并将存储的能量转换为第二调节输出。 能量存储系统具有耦合到转换器模块的逻辑单元，以在线路输入中断的情况下使转换器模块和泵存储模块将输出端处的功率从第一调节输出功率转换到第二调节输出功率 功率。
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公开(公告)号：US07356042B2
公开(公告)日：2008-04-08
申请号：US10176542
申请日：2002-06-21
IPC分类号： H04L12/413
CPC分类号： H04L12/4625 , H04L12/413 , H04L12/44 , H04M7/122
摘要： A technique for multiplexing high speed computed data with digitized voice signals onto a fiber optic cable for transfer to a local central office. The data packets of a number of computers are networked by way of a distributed hub that extends to residences, offices, apartments, etc. The data packets are switched outside the switching fabric of a local central office and routed to the internet or elsewhere. Command signals that are for accessing the internet are transmitted and received as 10 MHz Ethernet data packets on the distributed hub.
摘要翻译： 一种用于将高速计算数据与数字化语音信号复用到光纤电缆上用于传送到本地中心局的技术。 许多计算机的数据包通过扩展到住宅，办公室，公寓等的分布式集线器进行网络连接。数据包在本地中心局的交换结构外部切换并路由到互联网或其他地方。 用于访问互联网的命令信号在分布式集线器上作为10 MHz以太网数据包发送和接收。
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