-4 MOTION VECTOR MEMORY MINIMIZATION METHOD FOR CODING OF MOTION VECTOR IN VIDEO CODEC OF MPEG-4 PROTOCOL

摘要

PURPOSE: A method for minimizing a motion vector memory for motion vector coding in an MPEG-4(Moving Picture Experts Group-4) video CODEC is provided to minimize the capacity of the memory used for encoding and decoding motion vectors, thereby realizing efficient coding. CONSTITUTION: A VOP(Video Object Plane) is divided into n GOB(Group Of Block). A motion vector of each divided GOB is predicted. Double buffer memories made up of a ping buffer and a pong buffer store the predicted motion vectors sequentially by the GOB unit. Motion vector coding is executed to the motion vectors stored in a double buffering method.