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    • 1. 发明授权
    • Short pulse rejection circuit and method thereof
    • 短脉冲抑制电路及其方法
    • US07719321B2
    • 2010-05-18
    • US12289855
    • 2008-11-06
    • Cheon-Oh LeeNam-Hyun KimKi-Hong KimJong-Seok KimJin-Ho Oh
    • Cheon-Oh LeeNam-Hyun KimKi-Hong KimJong-Seok KimJin-Ho Oh
    • H03K9/08
    • H04L7/033H03K5/1252H03K5/1534H04L7/0083
    • A short pulse rejection circuit may include an edge detector, a filter circuit, a comparison circuit, and a gating circuit. The edge detector may delay an input signal to generate a delayed input signal, and detect an edge of the input signal to generate an edge detection signal. The filter circuit may perform a low pass filtering on the edge detection signal to generate a first signal. The comparison circuit may compare the first signal with a reference voltage. The gating circuit may gate the delayed input signal based on an output signal of the comparison circuit. Therefore, the short pulse rejection circuit may have a sufficient setup/hold time margin of a flip-flop, and may sample an input signal even when a state of the input signal does not change during an initial operation.
    • 短脉冲抑制电路可以包括边缘检测器,滤波器电路,比较电路和门控电路。 边缘检测器可以延迟输入信号以产生延迟的输入信号,并且检测输入信号的边沿以产生边缘检测信号。 滤波器电路可以对边缘检测信号执行低通滤波以产生第一信号。 比较电路可以将第一信号与参考电压进行比较。 门控电路可以基于比较电路的输出信号对延迟的输入信号进行门控。 因此,短脉冲抑制电路可以具有触发器的足够的建立/保持时间裕度,并且即使在初始操作期间输入信号的状态没有改变时,也可以采样输入信号。
    • 3. 发明申请
    • Short pulse rejection circuit and method thereof
    • 短脉冲抑制电路及其方法
    • US20090189644A1
    • 2009-07-30
    • US12289855
    • 2008-11-06
    • Cheon-Oh LeeNam-Hyun KimKi-Hong KimJong-Seok KimJin-Ho Oh
    • Cheon-Oh LeeNam-Hyun KimKi-Hong KimJong-Seok KimJin-Ho Oh
    • G01R29/02
    • H04L7/033H03K5/1252H03K5/1534H04L7/0083
    • A short pulse rejection circuit may include an edge detector, a filter circuit, a comparison circuit, and a gating circuit. The edge detector may delay an input signal to generate a delayed input signal, and detect an edge of the input signal to generate an edge detection signal. The filter circuit may perform a low pass filtering on the edge detection signal to generate a first signal. The comparison circuit may compare the first signal with a reference voltage. The gating circuit may gate the delayed input signal based on an output signal of the comparison circuit. Therefore, the short pulse rejection circuit may have a sufficient setup/hold time margin of a flip-flop, and may sample an input signal even when a state of the input signal does not change during an initial operation.
    • 短脉冲抑制电路可以包括边缘检测器,滤波器电路,比较电路和门控电路。 边缘检测器可以延迟输入信号以产生延迟的输入信号,并且检测输入信号的边沿以产生边缘检测信号。 滤波器电路可以对边缘检测信号执行低通滤波以产生第一信号。 比较电路可以将第一信号与参考电压进行比较。 门控电路可以基于比较电路的输出信号对延迟的输入信号进行门控。 因此,短脉冲抑制电路可以具有触发器的足够的建立/保持时间裕度,并且即使当在初始操作期间输入信号的状态不改变时,也可以采样输入信号。