| 摘要 |
PURPOSE:To generate a waveform signal in a complicated shape which repeatedly increases and decreases by determining an applied function by a function arithmetic means on the basis of a data value circulated in a circulation path and making the applied function different. CONSTITUTION:The function arithmetic means is equipped with functions f1 and f2; and the function f1 increases in waveform output value and the function f2 decreases. Then it is checked whether or not the value of the waveform signal exceeds a specific 1st threshold value when a waveform signal which increases is outputted by circulating data in the circulation path by using the function f1. When the value of the waveform signal exceeds the 1st threshold value, the function arithmetic means switches the applied function from f1 to f2. Consequently, the data are circulated in the circulation path of the function f2 and the signal decreases. Further, it is checked whether or not the value of the signal becomes less than a 2nd threshold value, and when so, the function is switched from f2 to f1, thereby outputting the signal waveform which repeatedly increases and decreases. |
