| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pulse signal detection circuit capable of lowering a cost while keeping functionality. <P>SOLUTION: The pulse signal detection circuit includes: a pulse signal creation section 20 in which a detected pulse signal repeatedly having a detected pulse of positive polarity and negative polarity is inputted, and that creates a first pulse signal having a first pulse corresponding to the detected pulse of positive polarity and a second pulse of the same polarity with the first pulse corresponding to the detected pulse of negative polarity, and a second pulse signal having a third pulse corresponding to any of the detected pulse of positive polarity and the detected pulse of negative polarity; and a measurement detection section 21 that measures a rise time or a fall time of two pulses in the first pulse signal inputted at a terminal that may measure a time, detects the third pulse of the second pulse signal inputted at a terminal that may detect pulse, and identifies whether a measured time is related to a time concerning any of the detected pulse of positive polarity or the detected pulse of negative polarity based on whether or not the third pulse is detected while measuring the time. <P>COPYRIGHT: (C)2012,JPO&INPIT |
