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81. 发明授权

US08143949B2 Push-pull linear hybrid class H amplifier 有权
公开(公告)号：US08143949B2
公开(公告)日：2012-03-27
申请号：US12647022
申请日：2009-12-24
申请人： John B. French , Andrew J. Mason
发明人： John B. French , Andrew J. Mason
IPC分类号： H03F3/18
CPC分类号： H03F3/3076 , H03F1/0227 , H03F3/187 , H03F3/68 , H03F2200/03 , H03F2200/102 , H03F2200/33 , H03F2200/411 , H03F2200/441 , H03F2200/504 , H03F2200/78
摘要： Several push-pull linear hybrid class H amplifiers are disclosed. A split power rail provides a positive supply rail and a negative supply rail in response to a power supply control voltage. A push-pull amplifier stage is powered by the positive and negative supply rails. The amplifier stage receives an input signal and provides a corresponding amplified output signal. A power supply control circuit provides the power supply control voltage in response to the smaller of the positive and negative supply rails, and the input signal.

82. 发明申请

US20120019405A1 CURRENT DAC 有权
标题翻译：电流DAC
公开(公告)号：US20120019405A1
公开(公告)日：2012-01-26
申请号：US13161742
申请日：2011-06-16
申请人： Praveen Varma Nadimpalli , Joseph Hubert Colles
发明人： Praveen Varma Nadimpalli , Joseph Hubert Colles
IPC分类号： H03M1/80
CPC分类号： H03F1/30 , G05F1/575 , H03F3/189 , H03F3/24 , H03F2200/447 , H03F2200/555 , H03F2200/78
摘要： A current digital-to-analog converter (DAC) is disclosed. The current DAC includes a current reference circuit coupled between a voltage source terminal and a voltage node, wherein the current reference circuit includes a feedback node. A switchable resistor network is communicably coupled to the feedback node of the current reference circuit via a first feedback network that is adapted to equalize a first voltage across the switchable resistor network voltage with a second voltage between the feedback node and the voltage node. A current mirror includes an output node communicably coupled to the switchable resistor network via a second feedback network that is adapted to equalize an output current that flows from the output node with an input current that flows into the switchable resistor network.
摘要翻译：公开了一种当前的数模转换器（DAC）。电流DAC包括耦合在电压源端子和电压节点之间的电流参考电路，其中电流参考电路包括反馈节点。可切换电阻网络经由第一反馈网络可通信地耦合到电流参考电路的反馈节点，该第一反馈网络适于使可切换电阻器网络电压上的第一电压与反馈节点与电压节点之间的第二电压相等。电流镜包括经由第二反馈网络可通信地耦合到可切换电阻器网络的输出节点，其适于使从输出节点流出的输出电流与流入可切换电阻器网络的输入电流相等。

83. 发明申请

US20120013400A1 Current Control Circuit, Class AB Operational Amplifier System and Current Control Method 有权
标题翻译：电流控制电路，AB类运算放大器系统和电流控制方法
公开(公告)号：US20120013400A1
公开(公告)日：2012-01-19
申请号：US12895830
申请日：2010-09-30
申请人： Ming-Hung Chang , Che-Hung Lin
发明人： Ming-Hung Chang , Che-Hung Lin
IPC分类号： H03F3/68 , H03G3/00
CPC分类号： H03F3/45183 , H03F1/0233 , H03F1/0272 , H03F3/3022 , H03F3/45632 , H03F2200/78 , H03F2203/30021 , H03F2203/45681
摘要： A current control circuit for controlling a bias current of a class AB operational amplifier includes: a low current source, for generating a low bias current; a high current source, for generating a high bias current, which is greater than the low bias current; and a comparing and selecting unit, coupled to an output terminal of the class AB operational amplifier, for selecting one of the low bias current and the high bias current to output as the bias current according to an output voltage of the class AB OP.
摘要翻译：用于控制AB类运算放大器的偏置电流的电流控制电路包括：用于产生低偏置电流的低电流源; 高电流源，用于产生大于低偏置电流的高偏置电流; 以及比较选择单元，其耦合到AB类运算放大器的输出端，用于根据AB类的输出电压选择低偏置电流和高偏置电流之一作为偏置电流输出。

84. 发明申请

US20120008796A1 DISTORTION COMPENSATION 有权
标题翻译：失败补偿
公开(公告)号：US20120008796A1
公开(公告)日：2012-01-12
申请号：US13229125
申请日：2011-09-09
申请人： Kenneth Carl Furge
发明人： Kenneth Carl Furge
IPC分类号： H04B15/00
CPC分类号： H03G7/004 , H03F1/32 , H03F2200/03 , H03F2200/321 , H03F2200/471 , H03F2200/66 , H03F2200/78 , H03G3/007 , H03G11/008
摘要： A distortion compensation system minimizes distortion in an audio system by monitoring a supply voltage and adjusting a clipping threshold and/or compression knee. An adjustable gain circuit controls the gain of the audio signal according whether the audio signal exceeds a variable threshold. The variable threshold is adjusted within a threshold range based on the supply voltage. Distortion due to clipping of the audio signal is minimized while available power at any given time is maximized.
摘要翻译：失真补偿系统通过监测电源电压和调整限幅阈值和/或压缩膝盖来最小化音频系统中的失真。可调增益电路根据音频信号是否超过可变阈值来控制音频信号的增益。可变门限根据供电电压在阈值范围内进行调整。由于音频信号的削波引起的失真最小化，而在任何给定时间的可用功率最大化。

85. 发明授权

US08036402B2 Distortion compensation 有权
标题翻译：失真补偿
公开(公告)号：US08036402B2
公开(公告)日：2011-10-11
申请号：US11305498
申请日：2005-12-15
申请人： Kenneth Carl Furge
发明人： Kenneth Carl Furge
IPC分类号： H03F99/00
CPC分类号： H03G7/004 , H03F1/32 , H03F2200/03 , H03F2200/321 , H03F2200/471 , H03F2200/66 , H03F2200/78 , H03G3/007 , H03G11/008
摘要： A distortion compensation system minimizes distortion in an audio system by monitoring a supply voltage and adjusting a clipping threshold and/or compression knee. An adjustable gain circuit controls the gain of the audio signal according whether the audio signal exceeds a variable threshold. The variable threshold is adjusted within a threshold range based on the supply voltage. Distortion due to clipping of the audio signal is minimized while available power at any given time is maximized.
摘要翻译：失真补偿系统通过监测电源电压和调整限幅阈值和/或压缩膝盖来最小化音频系统中的失真。可调增益电路根据音频信号是否超过可变阈值来控制音频信号的增益。可变门限根据电源电压在阈值范围内进行调整。由于音频信号的削波引起的失真最小化，而在任何给定时间的可用功率最大化。

86. 发明授权

US08032097B2 Amplitude error de-glitching circuit and method of operating 有权
标题翻译：振幅误差消除电路及操作方法
公开(公告)号：US08032097B2
公开(公告)日：2011-10-04
申请号：US11670402
申请日：2007-02-01
申请人： Serge F. Drogi , Vikas Vinayak , Martin A. Tomasz
发明人： Serge F. Drogi , Vikas Vinayak , Martin A. Tomasz
IPC分类号： H04B1/04
CPC分类号： H03F1/0205 , H03F1/0227 , H03F1/0238 , H03F1/3247 , H03F3/24 , H03F2200/451 , H03F2200/78 , H03F2200/99 , H03G3/004 , H03G3/3042 , H04B1/0475 , H04B2001/0408
摘要： A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The power amplifier controller circuit comprises an amplitude control loop and a phase control loop. The amplitude control loop adjusts the supply voltage to the power amplifier based upon the amplitude correction signal. The RF power amplifier system may reduce the corrective action of the amplitude loop during periods of relatively rapid changes in amplitude, and thus distortion can be further reduced.
摘要翻译：功率放大器控制器电路基于指示输入信号的幅度与输出信号的衰减幅度之间的幅度差的振幅校正信号来控制功率放大器。功率放大器控制器电路包括幅度控制回路和相位控制回路。幅度控制环路根据振幅校正信号调整功率放大器的电源电压。 RF功率放大器系统可以在幅度相对快速变化的时段期间减小幅度回路的校正动作，从而可以进一步减小失真。

87. 发明申请

US20110234323A1 AMPLIFICATION CONTROL CIRCUIT 有权
标题翻译：放大控制电路
公开(公告)号：US20110234323A1
公开(公告)日：2011-09-29
申请号：US12957076
申请日：2010-11-30
申请人： Dae Seok JANG
发明人： Dae Seok JANG
IPC分类号： H03F3/04
CPC分类号： H03F3/24 , H03F1/0216 , H03F3/195 , H03F2200/408 , H03F2200/451 , H03F2200/504 , H03F2200/555 , H03F2200/78
摘要： There is provided an amplification control circuit that can adjust the amount of current being supplied to an amplifier according to a reference signal set beforehand. An amplification control circuit according to an aspect of the invention may include: a power supply section supplying a DC power set beforehand to at least one amplifier according to a reference signal set beforehand; a current control section detecting a current being supplied from the power supply section according to a ratio set beforehand and controlling the amount of current being supplied to the at least one amplifier from the power supply section; and a current adjustment section adjusting a level of the current being controlled by the current control section in order to increase or decrease the amount of current being supplied to the at least one amplifier from the power supply section.
摘要翻译：提供了一种放大控制电路，其可以根据预先设定的参考信号来调节提供给放大器的电流量。根据本发明的一个方面的放大控制电路可以包括：电源部，其根据预先设定的参考信号将至少一个放大器预先提供的DC功率提供; 电流控制部，根据预先设定的比率，检测从电源部供给的电流，并控制从电源部供给到至少一个放大器的电流量; 以及电流调节部分，调节由电流控制部分控制的电流电平，以便增加或减少从电源部分提供给至少一个放大器的电流量。

88. 发明申请

US20110189966A1 Power Amplifier Controller Circuit 有权
标题翻译：功率放大器控制器电路
公开(公告)号：US20110189966A1
公开(公告)日：2011-08-04
申请号：US13083159
申请日：2011-04-08
申请人： Vikas Vinayak , Serge Francois Drogi
发明人： Vikas Vinayak , Serge Francois Drogi
IPC分类号： H04B1/04
CPC分类号： H03G3/3042 , H03F1/0205 , H03F1/0227 , H03F1/0238 , H03F1/3247 , H03F2200/451 , H03F2200/78 , H03F2200/99 , H03G3/004
摘要： A power amplifier controller circuit controls a power amplifier based upon an amplitude correction signal indicating the amplitude difference between the amplitude of the input signal and an attenuated amplitude of the output signal. The power amplifier controller circuit comprises an amplitude control loop and a phase control loop. The amplitude control loop adjusts the supply voltage to the power amplifier based upon the amplitude correction signal. The amplitude correction signal may also be split into two or more signals with different frequency ranges and provided respectively to different types of power supplies with different efficiencies to generate the adjusted supply voltage to the power amplifier. The phase control loop adjusts the phase of the input signal based upon a phase error signal indicating a phase difference between phases of the input signal and the output signal to reduce phase distortion generated by the power amplifier.
摘要翻译：功率放大器控制器电路基于指示输入信号的幅度与输出信号的衰减幅度之间的幅度差的振幅校正信号来控制功率放大器。功率放大器控制器电路包括幅度控制回路和相位控制回路。幅度控制环路根据振幅校正信号调整功率放大器的电源电压。幅度校正信号也可以被分成具有不同频率范围的两个或更多个信号，并分别提供给具有不同效率的不同类型的电源，以产生对功率放大器的调整的电源电压。相位控制环路基于表示输入信号的相位与输出信号的相位差的相位误差信号来调整输入信号的相位，以减小由功率放大器产生的相位失真。

89. 发明申请

US20110133058A1 METHOD AND APPARATUS FOR CANCELLATION OF TRANSIENT VOLTAGE SPIKE 有权
标题翻译：用于消除瞬态电压SPIKE的方法和装置
公开(公告)号：US20110133058A1
公开(公告)日：2011-06-09
申请号：US12908498
申请日：2010-10-20
申请人： Sae-Kyoung KANG
发明人： Sae-Kyoung KANG
IPC分类号： H01J40/14
CPC分类号： H03F3/087 , H03F3/45475 , H03F2200/78
摘要： An apparatus for cancellation of a transient voltage spike, includes: a first photodiode for detecting a photon in an optical signal input from an outside, a second photodiode for detecting the photon in the optical signal input from the outside, and a differential amplifier for canceling the same signal component in a first output signal of the first photodiode and a second output signal output from the second photodiode, and to amplify a voltage difference between the first output signal and the second output signal. The transient voltage spike cancellation apparatus cancel a transient voltage spike occurring in an avalanche photodiode operating in a gated Geiger mode, using the differential amplifier.
摘要翻译：一种用于消除瞬态电压尖峰的装置，包括：用于检测从外部输入的光信号中的光子的第一光电二极管，用于检测从外部输入的光信号中的光子的第二光电二极管，以及用于抵消在第一光电二极管的第一输出信号中的相同信号分量和从第二光电二极管输出的第二输出信号，并放大第一输出信号和第二输出信号之间的电压差。瞬态电压尖峰消除装置使用差分放大器来消除在门控盖革盖模式下工作的雪崩光电二极管中发生的瞬态电压尖峰。

90. 发明授权

US07944246B2 Signal detecting circuit 有权
标题翻译：信号检测电路
公开(公告)号：US07944246B2
公开(公告)日：2011-05-17
申请号：US11976497
申请日：2007-10-25
申请人： Hideki Uchiki
发明人： Hideki Uchiki
IPC分类号： H03K5/153
CPC分类号： H03F3/45475 , H03F3/45179 , H03F2200/453 , H03F2200/78 , H03F2203/45138
摘要： A full-wave rectifier circuit receives complementary signals and produces a current corresponding to an added value of differential signals at different levels. A voltage comparator performs a comparison between output signals produced and subjected to current addition and voltage conversion by the full-wave rectifier circuit. A timer detects whether an output signal of the voltage comparator is kept in the same state for a predetermined time or more, and produces a signal indicating a result of the detection. A signal detecting circuit that can accurately identify a state of digital signals of a minute amplitude transferred through a pair of complementary signal lines is achieved without complicating manufacturing steps.
摘要翻译：全波整流电路接收互补信号，并产生对应于不同电平的差分信号的相加值的电流。电压比较器对通过全波整流电路产生并进行电流相加和电压转换的输出信号进行比较。定时器检测电压比较器的输出信号是否处于相同的状态达预定时间或更长时间，并产生指示检测结果的信号。可以在不使制造步骤复杂化的情况下实现能够精确地识别通过一对互补信号线传送的微小幅度的数字信号的状态的信号检测电路。

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