METHOD FOR PREDICTING MC MODE FOR B-PICTURE CODING AND APPARATUS THEREFOR

摘要

PURPOSE: A method for predicting an MC(Motion Compensation) mode for B-picture coding and an apparatus therefor are provided to determine the last MC mode without performing interpolative MC. CONSTITUTION: The first ME/MC unit has a forward frame ME(Motion Estimation)/MC unit(320), a forward top field ME/MC unit(330) and a forward bottom field ME/MC unit(340). The first ME/MC unit compares a previous frame with a current frame, and predicts the SAD(Sum of Absolute Difference) of a forward frame/field. The second ME/MC unit has a backward frame ME/MC unit(350), a backward top field ME/MC unit(360) and a backward bottom field ME/MC unit(370). The second ME/MC unit compares the current frame with a next frame, and predicts the SAD of a backward frame/field. An MC mode determining unit(380) selects an interpolative MC mode and a forward/backward MC mode using difference value information between the SAD of the forward frame/field and the SAD of the backward frame/field.