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    • 4. 发明授权
    • Variable-ratio electronic counter-divider
    • 可变比电子计数器
    • US3811092A
    • 1974-05-14
    • US29842472
    • 1972-10-17
    • ADRET ELECTRONIQUE
    • CHARBONNIER R
    • H03K23/66H03K23/06
    • H03K23/667
    • In a digital frequency dividers with a programmable ratio, there is provided two serially connected division scales, the first scale being set so that its division ratio shifts in whole units under the action of control signals applied thereto, the second scale including a fixed-capacity counter set to count permanently and to apply to the first scale a control signal which is enabled for a predetermined number of counts of the second scale. Such a divider is adapted for operation at frequencies higher than that of the prior art dividers, and will be used in frequency generators.
    • 在具有可编程比率的数字分频器中,提供两个串联连接的分度刻度,第一刻度被设置为使得其分配比在施加到其上的控制信号的作用下以整体单位移位,第二刻度包括固定容量 计数器被设置为永久计数,并且对第一比例应用预定数量的计数的控制信号应用于第一比例。
    • 5. 发明授权
    • Active frequencymeter
    • 主动频率计
    • US3753100A
    • 1973-08-14
    • US3753100D
    • 1971-07-16
    • ADRET ELECTRONIQUE
    • CHARBONNIER R
    • G01R23/00G01R23/10G01R23/02
    • G01R23/10G01R23/00
    • Device for measuring frequencies, comprising a frequencymeter having a memory and digital outputs which programs an iterative frequency synthesizer. The latter comprises an interpolation oscillator switchable to a plurality of the decade units of the synthesizer. Means are provided for effecting a subtractive mixing of the synthesized frequency and the frequency to be measured and means are provided for controlling the frequency variation of the interpolation oscillator from the output of the mixing means. A second frequencymeter which has digital outputs measures the frequency increment of the interpolation oscillator.
    • 用于测量频率的装置,包括具有存储器的频率计和对迭代频率合成器进行编程的数字输出。 后者包括可切换到合成器的多个十位单位的内插振荡器。 提供了用于实现合成频率和待测频率的减法混合的装置,用于控制来自混频装置的输出的内插振荡器的频率变化的装置。 具有数字输出的第二个频率计测量插值振荡器的频率增量。