公开(公告)号：US6016072A

公开(公告)日：2000-01-18

申请号：US46408

申请日：1998-03-23

申请人： Luigi Ternullo, Jr. ,  Michael C. Stephens

发明人： Luigi Ternullo, Jr. ,  Michael C. Stephens

IPC分类号： H02M3/07 ,  G05F1/10

CPC分类号： H02M3/07

摘要： A regulator system includes first and second voltage sensing circuits coupled to a voltage generator control circuit. The first and second voltage sensing circuits are configured to monitor the voltage generated by the on-chip voltage generator (i.e., the on-chip supply voltage) and detect when the on-chip supply voltage reaches thresholds that are predetermined to define a desired range of the on-chip supply voltage. The voltage generator control circuit receives voltage sense signals from the voltage sense circuits and, in response, asserts or de-asserts a control signal received by the on-chip voltage generator so as to activate or de-activate the on-chip voltage generator to maintain the on-chip supply voltage within the desired range. The voltage generator control circuit introduces hysteresis in the generation of the control signal provided to the on-chip voltage generator. As a result of this hysteresis, once the on-chip voltage generator is activated, the voltage generator control circuit only de-activates the on-chip voltage generator when the on-chip supply voltage reaches the higher threshold. Conversely, once the on-chip voltage generator is de-activated, the voltage generator control circuit only activates the on-chip voltage generator when the on-chip supply voltage reaches the lower threshold.

摘要翻译： 调节器系统包括耦合到电压发生器控制电路的第一和第二电压感测电路。 第一和第二电压感测电路被配置为监视片上电压发生器产生的电压（即，片上电源电压），并且检测片上电源电压何时达到预定的阈值以限定期望的范围 的片上电源电压。 电压发生器控制电路接收来自电压检测电路的电压检测信号，并作为响应，断言或取消断言由片上电压发生器接收的控制信号，以激活或去激活片上电压发生器 将片上电源电压保持在所需范围内。 电压发生器控制电路在提供给片上电压发生器的控制信号的产生中引入滞后。 作为这种滞后的结果，一旦芯片上的电压发生器被激活，当片上电源电压达到较高的阈值时，电压发生器控制电路仅仅去激活片上电压发生器。 相反，一旦片上电压发生器被去激活，当片上电源电压达到较低阈值时，电压发生器控制电路仅激活片上电压发生器。

公开(公告)号：US5565764A

公开(公告)日：1996-10-15

申请号：US435685

申请日：1995-05-05

申请人： Leslie A. Priebe ,  Michael C. Stephens ,  William D. Daniels

发明人： Leslie A. Priebe ,  Michael C. Stephens ,  William D. Daniels

IPC分类号： G01R23/16 ,  G01S7/02

CPC分类号： G01R23/16 ,  G01S7/021

摘要： The parameters of a digital signal are extracted by the application of autocorrelation and crosscorrelation techniques to effectively measure the frequency and time behavior of a digital signal. The method employs digital autocorrelation and crosscorrelation to determine these parameters. Autocorrelation allows the measurement of signal frequency by measurement of instantaneous signal phase. Crosscorrelation allows measurement of relative phase between two or more signals in two or more channels by measurement of instantaneous phase and by referencing the instantaneous phase to the autocorrelation function. The autocorrelation function and crosscorrelation function preserve relative amplitude and phase. Measurement of relative amplitude and phase allows direction finding calculation for any current class of system that uses amplitude and/or phase to derive angle or arrival. Signal time and frequency measurement at the output of a correlation receiver result in robust characterization of the parameters of the signal. Digital calculations are superior to current analog or hybrid analog and digital methods because errors due to component aging, drift and temperature effects are easily prevented.

摘要翻译： 通过应用自相关和互相关技术提取数字信号的参数，以有效测量数字信号的频率和时间行为。 该方法采用数字自相关和互相关来确定这些参数。 自相关允许通过测量瞬时信号相位来测量信号频率。 互相关允许通过测量瞬时相位并通过参考与自相关函数的瞬时相位来测量两个或更多个通道中的两个或更多个信号之间的相对相位。 自相关函数和相关函数保存相对幅度和相位。 相对幅度和相位的测量允许使用振幅和/或相位导出角度或到达的任何当前类别的系统的方向测量计算。 在相关接收机的输出端的信号时间和频率测量结果可以显着地描述信号的参数。 数字计算优于当前的模拟或混合模拟和数字方法，因为易于防止由于组件老化，漂移和温度影响引起的错误。