-
1.发明公开
公开(公告)号：EP1096263A3
公开(公告)日：2003-05-28
申请号：EP00123243.8
申请日：2000-10-26
CPC分类号： G01R25/00
摘要： A jitter detector obtains a phase difference between input signals as a digital value to make jitter between the signals easily detectable. The jitter detector includes comparison pulse generator, periodic signal generator, counter and arithmetic unit. The comparison pulse generator outputs one phase difference comparison pulse after another. Each phase difference comparison pulse has a width representing the phase difference between first and second input signals. The periodic signal generator outputs a periodic signal every time a value obtained by accumulating the widths of the phase difference comparison pulses exceeds a predetermined value. Receiving the periodic signal and a clock signal with a period shorter than that of the periodic signal, the counter counts the number of pulses of the clock signal during one period of the periodic signal and outputs a resultant count. And the arithmetic unit detects and outputs a variation in the count as jitter between the first and second input signals.
-
2.发明公开Jitter detector, phase difference detector and jitter detecting method 审中-公开Jitter und Fasendetektor und dessen Detektionsverfahren
公开(公告)号：EP1096263A2
公开(公告)日：2001-05-02
申请号：EP00123243.8
申请日：2000-10-26
IPC分类号： G01R25/00
CPC分类号： G01R25/00
摘要： A jitter detector obtains a phase difference between input signals as a digital value to make jitter between the signals easily detectable. The jitter detector includes comparison pulse generator, periodic signal generator, counter and arithmetic unit. The comparison pulse generator outputs one phase difference comparison pulse after another. Each phase difference comparison pulse has a width representing the phase difference between first and second input signals. The periodic signal generator outputs a periodic signal every time a value obtained by accumulating the widths of the phase difference comparison pulses exceeds a predetermined value. Receiving the periodic signal and a clock signal with a period shorter than that of the periodic signal, the counter counts the number of pulses of the clock signal during one period of the periodic signal and outputs a resultant count. And the arithmetic unit detects and outputs a variation in the count as jitter between the first and second input signals.
摘要翻译： 抖动检测器获得输入信号之间的相位差作为数字值，使得信号之间的抖动容易检测。 抖动检测器包括比较脉冲发生器，周期信号发生器，计数器和运算单元。 比较脉冲发生器输出一个相位差比较脉冲。 每个相位差比较脉冲具有表示第一和第二输入信号之间的相位差的宽度。 每当通过累积相位差比较脉冲的宽度获得的值超过预定值时，周期性信号发生器输出周期信号。 接收到周期信号和周期信号的周期信号的时钟信号，计数器在周期信号的一个周期内对时钟信号的脉冲数进行计数并输出结果计数。 并且算术单元检测并输出计数的变化，作为第一和第二输入信号之间的抖动。
-
搜索结果
2 条记录 (耗时 0.01 秒)
