| 摘要 |
<p>PURPOSE:To eliminate the malfunction of a signal processing circuit, etc., due to noise, etc. by providing an output holding circuit which can rewrite the detection result only when the outputs of each step of a delay circuit are coincident with each other. CONSTITUTION:Output circuits 19, 20 can rewrite the detection result only when the outputs of each step of delay circuits 11-14 are coincident. In case the counting period of a counter 7 is varied by the missing of a control pulse or noise, etc., and the detection output fed from a detection circuit 10 is varied, the rear step of the delay circuit is recorded the detection output of previous time, so the outputs of each step of the delay circuit are discrepant and the detection result is not written in the output circuit. In this way the output circuit remains holding the detection result of the previous state and the malfunction is gone.</p> |
