| 摘要 |
PROBLEM TO BE SOLVED: To provide a noise detection circuit capable of accurately detecting even continuously generated noise without receiving a limit to the time width of the noise. SOLUTION: A level monitoring circuit 7 for monitoring the level of input signals inputted to a peripheral device 1 with the need of receiving the signals of the same level (high level) for a fixed period for a fixed level monitoring period is formed of a NOT circuit 5 for inverting level monitoring signals from the peripheral device 1 and an OR circuit 6 for computing the OR of inverted signals outputted by the NOT circuit 5 and the input signals inputted to the peripheral device 1. |
