Automatic pattern synchronizing circuit of an error detector
    1.
    发明授权
    Automatic pattern synchronizing circuit of an error detector 失效
    错误检测器的自动图案同步电路

    公开(公告)号:US5463639A

    公开(公告)日:1995-10-31

    申请号:US234043

    申请日:1994-04-28

    IPC分类号: G06F11/24 G01R31/28

    CPC分类号: G06F11/24

    摘要: An automatic pattern synchronizing circuit re-times the phase differences between clocks, thereby adjusting test pattern outputs from a device under test. The automatic pattern synchronizing circuit includes a reference voltage generator for providing a threshold voltage, a comparator for converting an input signal into a rectangular signal, a flip-flop, a pattern-counter part for counting a signal from the flip-flop and a control part for setting the threshold voltage in the comparator. The automatic pattern synchronizing circuit automatically synchronizes voltage patterns. In particular, the high and low voltage levels of the input waveform are automatically measured and the optimum threshold voltage is automatically set.

    摘要翻译: 自动图案同步电路对时钟之间的相位差进行重新计时,从而调整来自被测器件的测试图案输出。 自动图案同步电路包括用于提供阈值电压的参考电压发生器,用于将输入信号转换为矩形信号的比较器,触发器,用于对来自触发器的信号进行计数的图形计数器部分和控制 用于设置比较器中的阈值电压的部分。 自动模式同步电路自动同步电压模式。 特别地,自动测量输入波形的高低电压电平,并自动设置最佳阈值电压。