Patent ID: 8923462
Filing Date: 2014-12-30
Classification: H03K,H04L

Abstract:
1. A duty cycle correcting device comprising: a pulse width adjusting unit which adjusts a pulse width of an input signal according to a pulse width control code; a comparison unit which compares an output signal of the pulse width control unit with a plurality of reference voltages; and a control unit which selects one of a plurality of pulse width control codes based on comparison data from the comparison unit and provides the selected pulse width control code to the pulse width adjusting unit, wherein the control unit calculates a probability density function, associated with each of the plurality of pulse width control codes based on the comparison data, calculates a difference between the largest function value and the second-largest function value in the probability density function, and selects one, having the smallest difference, from among the plurality of pulse width control codes to output the selected pulse width control code to the pulse width adjusting unit.