MOTION COMPENSATION METHOD, MOTION COMPENSATION CIRCUIT AND VIDEO DECODER HAVING THE METHOD OF DATA REUSE BETWEEN HETEROGENEOUS PARTITIONS

摘要

A motion compensation method, a motion compensation circuit and a video decoder having the same are provided to reuse data to reduce the number of accesses to an external memory, thereby reducing motion compensation time and power consumption. An internal buffer(110) stores and outputs data which can be reusable among data of a previous unit calculation block. A data reuse determination unit(130) receives previous and current unit calculation blocks positioned in adjacent heterogeneous partitions to calculate a motion vector difference value in order to determine whether data are reused. When the motion vector difference value is within a reference value, the data reuse determination unit outputs a reuse signal.