Patent ID: 6943603

Claim:
A pulse generating circuit comprising: a first voltage outputting section comprising: a first delay circuit comprising a first resistor and a first capacitor and operating to output a first output voltage that changes from a first voltage towards a second voltage based on a first time constant according to a one-shot pulse; and a first transistor responsive to the one-shot pulse for allowing the first capacitor to charge to the first voltage within a charging time period less than a width of the one-shot pulse; a second voltage outputting section comprising: a second delay circuit comprising a second resistor and a second capacitor and operating to output a second output voltage that changes from said second voltage towards said first voltage based on a second time constant according to said one-shot pulse; and a second transistor responsive to the one-shot pulse for allowing the second capacitor to discharge to the second voltage within a discharging time period less than the width of the one-shot pulse; and a differential circuit to generate a pulse with a pulse width corresponding to a period from a time point of inputting said one-shot pulse to a cross time point when said first output voltage has the same value as said second output voltage.