| 摘要 |
<p>The present invention relates to an error detecting unit (3) of a rotational detector (1) for outputting two kinds of pulse signals (A, B) of which frequency according to rotation is equal, having a phase difference, and the error detecting unit (3) can detect an error of the rotational detector (1) without fail. For this reason, the error detecting unit (3) according to the present invention can judge whether or not either edge of upstroke or downstroke of the two kinds of pulse signals (A, B) appear alternately and can detect an error of the corresponding rotational detector (1).</p> |
