| 摘要 |
<p>A noise determination device is provided that determines the presence of noise on an input signal with a constant value that is output from an external device. The noise determination device includes a sampling unit that performs three samplings on the input signal, a sampling-interval setting unit that sets an interval between a first one and a second one of the samplings to have a value that is different from an integral multiple of the period of the periodic noise, and sets an interval between the second one and a third one of the samplings to be equal to or larger than an interval that is large enough to fully attenuate the periodic noise, and a noise determination unit that determines that the noise is not superimposed on the input signal only when all values acquired by the first, second, and third samplings match one another.</p> |
