METHOD AND APPARATUS FOR COMPENSATING ASYMMETRIC ERROR

摘要

A method and an apparatus for asymmetric error correction are provided to achieve more precise correction by separately accumulating counts corresponding to the level of a sample before and after zero crossing, and accumulating counts corresponding to the polarity of a sample other than the sample before and after zero crossing. A method for asymmetric error correction comprises the steps of: detecting whether zero crossing has occurred(720); detecting counts corresponding to the level of a sample before and after zero crossing(730); detecting counts corresponding to the polarity of a sample except for the sample before and after zero crossing(740); adding a weight to the detected counts(750); accumulating the counts(760); comparing the accumulated value with a predetermined threshold and correcting the asymmetric error based on the result(770).