Abstract: An automatic phase control method and automatic phase controller suitable for the method are disclosed, which can effectively cope with a phase error which is outside a proper operation region of a phase comparator, in which the phase comparator detects a phase difference between a reproduced color signal and a reference color signal. The automatic phase controller includes a region determiner for determining whether the phase difference between the burst signal and the reference color signal is in a positive or negative characteristic region for the phase comparator, and a phase inverter located between the reference color signal generator and the phase comparator, for providing the reference color signal generated from the reference color signal generator to the phase comparator if it is determined by the region determiner that the phase difference between the burst signal and the reference color signal is in the positive characteristic region of the phase comparator.