会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 32. 发明授权
    • 주파수 측정회로
    • 频率测试电路
    • KR1019960010758B1
    • 1996-08-08
    • KR1019940014884
    • 1994-06-27
    • 현대반도체 주식회사
    • 배정환
    • G01R23/15
    • G01R23/15
    • three state buffer(10-12) which respectively pass the upper limit frequency clock signal(CKU), test clock signal(CKT), lower limit frequency clock signal(CKL) when enabled by the output signal of flipflop; a multiplier which multiplies the upper limit frequency clock signal(CKU), test clock signal(CKT), lower limit frequency clock signal(CKL) respectively outputed through the three state buffers(10-12) and cleared by the reset signal(RE) inputted from the outside; flipflops(FF1-FF3) which generate the output by receiving the output signal of the multiplier(13-15) as clock signal; flipflops(FF4), (FF5) which generate the output by receiving the output signal of the flipflop(FF2) as clock signal and by receiving the output signal of the flipflops(FF1),(FF3) as clear signal; an exclusive OR gate(XOR) which outputs the output signals of the flipflops(FF4),(FF5) as test signal(TEST) by exclusive ORing.
    • 当触发器的输出信号使能时,三态缓冲器(10-12)分别通过上限频率时钟信号(CKU),测试时钟信号(CKT),下限频率时钟信号(CKL); 乘法器,其将通过三个状态缓冲器(10-12)分别输出并由复位信号(RE)清零的上限频率时钟信号(CKU),测试时钟信号(CKT),下限频率时钟信号(CKL) 从外部输入; 触发器(FF1-FF3),其通过接收乘法器(13-15)的输出信号作为时钟信号产生输出; 触发器(FF4),(FF5),其通过接收触发器(FF2)的输出信号作为时钟信号并通过接收触发器(FF1),(FF3)的输出信号作为清除信号而产生输出; 通过异或运算将触发器(FF4),(FF5)的输出信号作为测试信号(TEST)输出的异或门(XOR)。