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公开(公告)号：US07046796B2
公开(公告)日：2006-05-16
申请号：US11034182
申请日：2005-01-13
IPC分类号： H04M19/08
CPC分类号： H04M19/08
摘要： A system and method is provided for supplying power over a home phone line network in a manner that is interoperable with other voice and data services operating on the same network. The system includes a power source coupled to the home phone line network. The power source includes an AC signal generator that generates an AC signal at a selected frequency. The power source also includes a band pass filter for removing unwanted harmonics from the AC signal, thereby generating a filtered AC signal for powering one or more devices on the home phone line network. One or more devices attached to the home phone line network, such as a telephone adapter or telephone, receives the filtered AC signal. Each device comprises a second band pass filter and an AC/DC converter. The second band pass filter passes the filtered AC signal to the AC/DC converter and prevents the introduction of undesired harmonics onto the home phone line network from the AC/DC converter. The AC/DC converter converts the filtered AC signal to a DC signal used for powering the device.
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2.发明授权DSP based SLIC architecture with current-sensing voltage synthesis impedance matching and DC feed control 有权基于DSP的SLIC架构，具有电流感应电压合成阻抗匹配和直流馈电控制公开(公告)号：US06735302B1
公开(公告)日：2004-05-11
申请号：US09579932
申请日：2000-05-26
申请人： Steven L. Caine , Todd L. Brooks
发明人： Steven L. Caine , Todd L. Brooks
IPC分类号： H04M1900
CPC分类号： H04L25/0278 , H03F3/217 , H03F3/3008 , H03F3/3069 , H03F3/68 , H04L25/0284 , H04L25/0296 , H04M19/005
摘要： A CODEC and a SLIC assembly perform current-sensing-voltage synthesis impedance matching and DC feed control functions. Signal processing that does not require high voltage, such as impedance matching and DC feed control, is performed in the digital domain by the CODEC while the SLIC assembly includes high voltage circuitry. This configuration is useful for Voice over Internet Protocol (VOIP) applications with a short subscriber line loop or other long loop applications. The SLIC includes high voltage operational amplifiers (op amps) to drive ring and tip signals. Bipolar transistors are also provided as bias compensating diodes for bias point stabilization over dynamic operating conditions such as temperature. The high voltage op amps include a composite MOSFET-bipolar complimentary symmetry driver stage that offers the bias control and stability of a bipolar device topology and drive capabilities of a power MOSFET device.
摘要翻译： CODEC和SLIC组件执行电流感测电压合成阻抗匹配和直流馈电控制功能。 不需要高电压的信号处理（如阻抗匹配和直流馈电控制）在数字域中由CODEC执行，而SLIC组件包括高压电路。 此配置对于具有短用户线路环路或其他长环路应用的语音互联网协议（VOIP）应用是有用的。 SLIC包括高压运算放大器（运算放大器）来驱动环形和尖端信号。 双极晶体管也被提供作为偏置补偿二极管，用于在诸如温度的动态工作条件下的偏置点稳定。 高压运算放大器包括复合MOSFET - 双极互补对称驱动器级，可提供双极型器件拓扑结构的偏置控制和稳定性以及功率MOSFET器件的驱动能力。
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公开(公告)号：US06862353B2
公开(公告)日：2005-03-01
申请号：US09840297
申请日：2001-04-24
CPC分类号： H04M19/08
摘要： A system and method is provided for supplying power over a home phone line network in a manner that is interoperable with other voice and data services operating on the same network. The system includes a power source coupled to the home phone line network. The power source includes an AC signal generator that generates an AC signal at a selected frequency. The power source also includes a band pass filter for removing unwanted harmonics from the AC signal, thereby generating a filtered AC signal for powering one or more devices on the home phone line network. One or more devices attached to the home phone line network, such as a telephone adapter or telephone, receives the filtered AC signal. Each device comprises a second band pass filter and an AC/DC converter. The second band pass filter passes the filtered AC signal to the AC/DC converter and prevents the introduction of undesired harmonics onto the home phone line network from the AC/DC converter. The AC/DC converter converts the filtered AC signal to a DC signal used for powering the device.
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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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5.发明授权Methods and systems for a MOSFET-bipolar complimentary symmetry driver with local feedback for bias stabilization 失效具有用于偏置稳定的局部反馈的MOSFET双极互补对称驱动器的方法和系统公开(公告)号：US06566957B1
公开(公告)日：2003-05-20
申请号：US09579657
申请日：2000-05-26
申请人： Steven L. Caine
发明人： Steven L. Caine
IPC分类号： H03F304
CPC分类号： H04L25/0292 , H03F3/3008 , H03F3/3069 , H03F3/3071 , H03F3/45179 , H03F3/45282 , H03F3/68 , H03F2203/45352 , H03F2203/45526 , H03F2203/45674 , H03F2203/45716 , H04L25/0272 , H04L25/0274 , H04L25/0276 , H04L25/0278 , H04L25/028 , H04L25/0284 , H04M19/005
摘要： A SLIC assembly includes high voltage operational amplifiers (op amps) and low voltage op amps. The high voltage op amps are used to drive ring and tip signals while the low voltage op amps are used to drive other signals. The low voltage op amps include Class A-B amplifier drivers based on bipolar transistors. Bipolar transistors are also provided as bias compensating diodes for bias point stabilization over dynamic operating conditions such as temperature. The high voltage op amps include a composite MOSFET-bipolar complimentary symmetry driver stage that offers the bias control and stability of a bipolar device topology and drive capabilities of a power MOSFET device.
摘要翻译： SLIC组件包括高压运算放大器（运算放大器）和低电压运算放大器。 高压运算放大器用于驱动环形和尖端信号，而低电压运算放大器用于驱动其他信号。 低电压运算放大器包括基于双极晶体管的A-B类放大器驱动器。 双极晶体管也被提供作为偏置补偿二极管，用于在诸如温度的动态工作条件下的偏置点稳定。 高压运算放大器包括复合MOSFET - 双极互补对称驱动器级，可提供双极型器件拓扑结构的偏置控制和稳定性以及功率MOSFET器件的驱动能力。
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6.发明授权Unbalanced ringing using a balanced ringing generator of a subscriber line interface circuit 失效使用用户线接口电路的平衡振铃发生器进行不平衡振铃
公开(公告)号：US5872842A
公开(公告)日：1999-02-16
申请号：US774228
申请日：1996-12-27
申请人： William G. Daly , Steven L. Caine
发明人： William G. Daly , Steven L. Caine
摘要： A communication loop using a subscriber line interface circuit (SLIC) is modified such that it can operate in unbalanced ringing environments as well as balanced ringing environments. This is accomplished by grounding the tip lead of a telephone instrument and creating an open circuit at the tip lead of the SLIC. The ring lead of the telephone instrument and the ring lead of the SLIC are electrically connected, and an AC voltage applied to the ring lead by the SLIC is increased. A power supply is connected to the SLIC and biased to provide the increased AC voltage on the SLIC ring lead while the average voltage on the SLIC tip lead is maintained substantially at ground. The result of this circuitry is a trapezoidal signal meeting the amplitude, loading and crest factor requirements of Bellcore Technical Requirement Publications TA-NWT-000909 and TR-NWT-000057.
摘要翻译： 使用用户线接口电路（SLIC）的通信环路被修改，使得其可以在不平衡振铃环境以及平衡振铃环境中操作。 这是通过将电话仪器的引线接地并在SLIC的尖端引线上产生开路来实现的。 电话乐器的环形引线和SLIC的环形引线电连接，并且由SLIC施加到环形引线的AC电压增加。 电源连接到SLIC并被偏置以在SLIC环形引线上提供增加的AC电压，而SLIC尖端引线上的平均电压基本保持在地。 该电路的结果是一个梯形信号，满足Bellcore技术要求出版物TA-NWT-000909和TR-NWT-000057的幅度，载荷和波峰因数要求。
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公开(公告)号：US5400239A
公开(公告)日：1995-03-21
申请号：US989588
申请日：1992-12-11
申请人： Steven L. Caine
发明人： Steven L. Caine
IPC分类号： H02M3/335
CPC分类号： H02M3/33561
摘要： A power converter comprises a power stage including a transformer, a pulse width modulator (PWM) for controlling the power stage, multiple output circuits providing individually regulated voltages, including switches for coupling the output circuits sequentially and cyclically to the power stage, and feedback circuitry for supplying respective feedback signals, each for a respective output circuit, as a control signal to the PWM synchronously with the coupling of the output circuits to the power stage, so that a single PWM and power stage serve for multiple output circuits. The converter can be a dc to dc converter or a four-quadrant switching amplifier. The PWM operates in current mode in conjunction with a current sensing resistor or transformer.
摘要翻译： 功率转换器包括功率级，包括变压器，用于控制功率级的脉冲宽度调制器（PWM），提供单独调节的电压的多个输出电路，包括用于将输出电路顺序地和循环地耦合到功率级的开关，以及反馈电路 用于向各个输出电路提供各自的反馈信号作为与输出电路耦合到功率级的PWM同步的PWM的控制信号，使得单个PWM和功率级用于多个输出电路。 转换器可以是直流转换器或四象限开关放大器。 PWM与电流检测电阻或变压器一起工作在电流模式。
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