| 摘要 |
PROBLEM TO BE SOLVED: To simplify and miniaturize a device by inputting a waveform of an analog signal as a voltage value, outputting a coincidence signal when respective voltage values are within the range of a reference value and recognizing the waveform. SOLUTION: Sample-and-hold parts 121-12n of a waveform recognition device 10 input the voltage values V1 -Vn of the analog signal A at the times t1 -tn to hold respectively the voltage values V1 -Vn . Further, a time sequence processing part 14 makes the sample-and-hold parts 121-12n successively input the voltage values V1 -Vn at a fixed sampling time. Further, comparison parts 161-16n output the coincidence signals S1 -Sn when the voltage values V1 -Vn held by the sample-and-hold parts 121-12n are within the range of beforehand set respective reference values VS1 -VSn . Then, a recognition part 18 recognizes whether or not it is a prescribed waveform based on the coincidence signals S1 -Sn outputted from the comparison parts 161-16n. |
