| 摘要 |
PURPOSE:To achieve smooth ascent and descent in a prescribed route, when a reference signal is changed, by providing an interval comparator which outputs an interval difference signal corresponding to the difference of pulse intervals and a frequency changing rate adjuster. CONSTITUTION:An interval comparator outputting an interval difference signal corresponding to the differece of pulse intervals, a frequency changing rate adjuster outputting a rate of change signal, and a pulse interval operator generating a digital signal with pulse interval operated based on the interval difference signal and the rate of change signal are provided for a titled circuit. For example, a reference signal f0 is inputted to a pulse inteval comparator 1, which sequentially compares a pulse inteval T0 of the reference signal f0 and pulse intervals T1-Tn in frequency f1 of a signal before the input of this reference signal to output a deviation signal Td that is inputted to a pulse operator 2. A pulse signal f2 is generated based on the deviation signal Td and a rate reference signal R from a DELTAf adjuster 3 and the signal f2 is inputted to the comparator 1 via a pulse interval memory 4. |
