| 摘要 |
PROBLEM TO BE SOLVED: To correct a duty ratio with high accuracy.SOLUTION: A duty correction device includes: setting means for calculating a delay adjustment amount for adjusting a delay in an input signal having an almost fixed duty ratio on the basis of the rising or falling phase of the input signal; delay adjustment means for delaying the phase of the input signal; inverter means for generating an inversion signal by inverting the amplitude of the input signal; and synthesis means for synthesizing a plurality of input signals. The delay adjustment means outputs a phase adjustment signal obtained by delaying or advancing the input signal with a phase amount equivalent to the phase and a delay adjustment signal obtained by delaying or advancing the input signal with the delay adjustment amount, and the inverter means outputs an inversion signal obtained by inverting the delay adjustment signal, and the synthesis means synthesizes the phase adjustment signal and the inversion signal. |
