| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a discrimination circuit which can discriminate a signal repeated through a noise and a quiescent interval and can attain turning into small size. <P>SOLUTION: The discrimination circuit 100 for distinguishing the noise and the signal repeated through the quiescent interval about an input signal (the output signal of a band-pass filter 4) includes a low-pass filter 11, in which a cut-off frequency is smaller than the frequency of the noise and larger than the reciprocal of the period, in which one frame of the signal repeated through the quiescent interval and the quiescent interval are combined, and a discrimination circuit 12 for judging whether the input signal is the noises or the signal repeated through the quiescent interval according to the output of the low-pass filter 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
