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    • 1. 发明授权
    • Phase detector and method having hysteresis characteristics
    • 相位检测器和方法具有滞后特性
    • US07119583B2
    • 2006-10-10
    • US10816178
    • 2004-03-31
    • Gary JohnsonWen Li
    • Gary JohnsonWen Li
    • G01R25/00
    • H03D13/004
    • A phase detector generates a first output signal if a feedback clock signal leads a reference clock signal by more than a first time. The phase detector generates a second output signal if the feedback clock signal lags the reference clock signal by more than a second time. If the feedback clock signal either leads the reference clock signal by less than the first time or lags the reference clock signal by less than the second time, neither output signal is generated. The phase detector may be used in a delay-lock loop in which the first and second output signals increase or decrease a delay of the reference clock signal by respective first and second delay increments. In such case, the each of the first and second delay increments should be less than the sum of the first and second times.
    • 如果反馈时钟信号超过第一次引导参考时钟信号,则相位检测器产生第一输出信号。 如果反馈时钟信号比第二次滞后于参考时钟信号,则相位检测器产生第二输出信号。 如果反馈时钟信号通过小于第一次引导参考时钟信号或者将参考时钟信号滞后小于第二次,则不会产生输出信号。 相位检测器可以用在延迟锁定环路中,其中第一和第二输出信号通过相应的第一和第二延迟增量来增加或减小参考时钟信号的延迟。 在这种情况下,第一和第二延迟增量中的每个应该小于第一次和第二次的和。
    • 2. 发明授权
    • Phase detector and method having hysteresis characteristics
    • 相位检测器和方法具有滞后特性
    • US07336106B2
    • 2008-02-26
    • US11505564
    • 2006-08-16
    • Gary JohnsonWen Li
    • Gary JohnsonWen Li
    • G01R25/00
    • H03D13/004
    • A phase detector generates a first output signal if a feedback clock signal leads a reference clock signal by more than a first time. The phase detector generates a second output signal if the feedback clock signal lags the reference clock signal by more than a second time. If the feedback clock signal either leads the reference clock signal by less than the first time or lags the reference clock signal by less than the second time, neither output signal is generated. The phase detector may be used in a delay-lock loop in which the first and second output signals increase or decrease a delay of the reference clock signal by respective first and second delay increments. In such case, the each of the first and second delay increments should be less than the sum of the first and second times.
    • 如果反馈时钟信号超过第一次引导参考时钟信号,则相位检测器产生第一输出信号。 如果反馈时钟信号比第二次滞后于参考时钟信号,则相位检测器产生第二输出信号。 如果反馈时钟信号通过小于第一次引导参考时钟信号或者将参考时钟信号滞后小于第二次,则不会产生输出信号。 相位检测器可以用在延迟锁定环路中,其中第一和第二输出信号通过相应的第一和第二延迟增量来增加或减小参考时钟信号的延迟。 在这种情况下,第一和第二延迟增量中的每个应该小于第一次和第二次的和。
    • 4. 发明申请
    • Phase detector and method having hysteresis characteristics
    • 相位检测器和方法具有滞后特性
    • US20050218937A1
    • 2005-10-06
    • US10816178
    • 2004-03-31
    • Gary JohnsonWen Li
    • Gary JohnsonWen Li
    • H03D3/00H03D13/00
    • H03D13/004
    • A phase detector generates a first output signal if a feedback clock signal leads a reference clock signal by more than a first time. The phase detector generates a second output signal if the feedback clock signal lags the reference clock signal by more than a second time. If the feedback clock signal either leads the reference clock signal by less than the first time or lags the reference clock signal by less than the second time, neither output signal is generated. The phase detector may be used in a delay-lock loop in which the first and second output signals increase or decrease a delay of the reference clock signal by respective first and second delay increments. In such case, the each of the first and second delay increments should be less than the sum of the first and second times.
    • 如果反馈时钟信号超过第一次引导参考时钟信号,则相位检测器产生第一输出信号。 如果反馈时钟信号比第二次滞后于参考时钟信号,则相位检测器产生第二输出信号。 如果反馈时钟信号通过小于第一次引导参考时钟信号或者将参考时钟信号滞后小于第二次,则不会产生输出信号。 相位检测器可以用在延迟锁定环路中,其中第一和第二输出信号通过相应的第一和第二延迟增量来增加或减小参考时钟信号的延迟。 在这种情况下,第一和第二延迟增量中的每个应该小于第一次和第二次的和。