| 摘要 |
<p>A waveform identity discriminating circuit to discriminate the identity of two signal waveforms one of which is selected only for a very short period of time for discriminating the identity, wherein sample-and-hold circuits directly receive the selected input signals and sample each of the input signals in response to a sampling command and holds the sampled values, a discriminating circuit discriminates whether or not the waveforms of the input signals are identical by comparing the sampled values of the input signals held by said sample-and-hold circuits and a sampling timing detecting circuit monitors the frequency distribution pattern of said input signal and detects whether or not there are contained frequency components of a predetermined bandwidth by an amount at or above predetermined value, wherein the sampling timing of said sampling means is controlled by the output of said sampling timing detecting means. <IMAGE></p> |
