Patent ID: 7292081

Claim:
A pulse generator for generating a control pulse that varies in pulse width comprising: a variable signal output means for outputting pulse width dividing signals whose pulse time widths vary in increments of a unit time, a time control means for detecting variations in time widths of said pulse width dividing signals to vary a pulse width of said control pulse in increments of a time length shorter than the unit time, wherein the pulse width dividing signals output from said variable signal output means comprise: a pulse width roughly dividing signal with a time width approximately equal to a pulse width of said control pulse and a pulse width finely dividing signal for regulating the pulse width of said control pulse by said unit time, wherein said time control means roughly determines the pulse width of said control pulse by means of said pulse width roughly dividing signal and then finely regulates the pulse width of said control pulse in increments of a time length shorter than said unit time by means of said pulse width finely dividing signal.