会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明授权
    • Fractional-N offset phase locked loop
    • 小数N偏移锁相环
    • US07098754B2
    • 2006-08-29
    • US11047258
    • 2005-01-31
    • Scott Robert HumphreysRyan Lee BunchBarry Travis Hunt, Jr.Alexander Wayne Hietala
    • Scott Robert HumphreysRyan Lee BunchBarry Travis Hunt, Jr.Alexander Wayne Hietala
    • H03C3/00H04L27/20
    • H03L7/1976H03C3/0966H03L7/23H03L2207/12
    • A fractional-N offset phase locked loop (FN-OPLL) is provided. The FN-OPLL includes a fractional divider, a phase detector, a loop filter, a voltage controlled oscillator (VCO), and feedback circuitry. Combiner circuitry combines an initial fractional divide value and a modulation signal to provide a combined fractional divide value. Based on the combined fractional divide value, the fractional-N divider divides a reference frequency and provides a divided reference frequency to the phase detector. The phase detector compares a phase of the divided reference frequency to a phase of a feedback signal to provide a comparison signal. The comparison signal is filtered by the loop filter to provide a control signal to the VCO, where the control signal controls a frequency of an output signal of the VCO. The output signal is processed by the feedback circuitry to provide the feedback signal to the phase detector.
    • 提供了一个分数N偏移锁相环(FN-OPLL)。 FN-OPLL包括分数分频器,相位检测器,环路滤波器,压控振荡器(VCO)和反馈电路。 组合器电路组合初始分数除法值和调制信号以提供组合分数除数值。 基于组合分数除法,分数N分频器划分参考频率,并向相位检测器提供分频参考频率。 相位检测器将分频参考频率的相位与反馈信号的相位进行比较,以提供比较信号。 比较信号由环路滤波器滤波,以向VCO提供控制信号,其中控制信号控制VCO的输出信号的频率。 输出信号由反馈电路处理,以将反馈信号提供给相位检测器。
    • 5. 发明授权
    • System and method for transitioning from one PLL feedback source to another
    • 从一个PLL反馈源转换到另一个PLL反馈源的系统和方法
    • US07412215B1
    • 2008-08-12
    • US11144119
    • 2005-06-03
    • Alexander Wayne HietalaJeffery Peter OrtizScott Robert Humphreys
    • Alexander Wayne HietalaJeffery Peter OrtizScott Robert Humphreys
    • H04B1/04
    • H04B1/0475H03L7/081H03L7/087H03L7/16H03L2207/12
    • A system and method are provided for switching from one phase-locked loop feedback source to another in a radio frequency (RF) transmitter. The RF transmitter includes a phase-locked loop (PLL) that provides a phase-modulated RF input signal and power amplifier circuitry that amplifies the RF input signal to provide an RF output signal. The PLL includes switching circuitry that couples a feedback path of the PLL to an output of the PLL for open loop operation and couples the feedback path of the PLL to an output of the power amplifier circuitry for closed loop operation. Prior to switching the feedback path from the output of the PLL to the output of the power amplifier circuitry, time alignment circuitry operates to time-align feedback signals from the outputs of the PLL and the power amplifier circuitry such that switching from open loop operation to closed loop operation causes minimal phase disturbance.
    • 提供了一种用于在射频(RF)发射机中从一个锁相环反馈源切换到另一个的系统和方法。 RF发射器包括提供相位调制RF输入信号的锁相环(PLL)和放大RF输入信号以提供RF输出信号的功率放大器电路。 PLL包括将PLL的反馈路径耦合到PLL的输出以用于开环操作的开关电路,并将PLL的反馈路径耦合到用于闭环操作的功率放大器电路的输出。 在将反馈路径从PLL的输出切换到功率放大器电路的输出之前,时间对准电路用于对来自PLL和功率放大器电路的输出的反馈信号进行时间对准,使得从开环操作切换到 闭环运行导致最小的相位扰动。
    • 10. 发明申请
    • WIRELESS MUSICAL INSTRUMENT NETWORK AND WIRELESS LINK MODULES
    • 无线音乐仪器网络和无线链路模块
    • US20110038488A1
    • 2011-02-17
    • US12851200
    • 2010-08-05
    • Scott Robert Humphreys
    • Scott Robert Humphreys
    • H04B3/00
    • G10H1/0083
    • A wireless musical instrument network (400, 500) may comprise one or more wireless link modules (100, 200, 300). In some embodiments a first wireless link module may be adapted to receive a first input audio signal and transmit a first wireless signal having a modulation component based on the first input audio signal. A second wireless link module may be adapted to receive the first wireless signal and a second input audio signal. The second wireless link module may be further adapted to demodulate the first wireless signal to provide a first received audio signal, and combine the first received audio signal and the second input audio signal to provide a combined audio signal. The second wireless link module may provide a second wireless signal having a modulation component based on the combined audio signal, whereby the combined audio signal and the second wireless signal contain information based on both the first input audio signal and the second input audio signal
    • 无线乐器网络(400,500)可以包括一个或多个无线链路模块(100,200,300)。 在一些实施例中,第一无线链路模块可以适于接收第一输入音频信号,并且基于第一输入音频信号发送具有调制分量的第一无线信号。 第二无线链路模块可以适于接收第一无线信号和第二输入音频信号。 第二无线链路模块还可以适于解调第一无线信号以提供第一接收音频信号,并且组合第一接收音频信号和第二输入音频信号以提供组合音频信号。 第二无线链路模块可以提供具有基于组合音频信号的调制分量的第二无线信号,由此组合音频信号和第二无线信号基于第一输入音频信号和第二输入音频信号两者包含信息