Patent ID: 7257262
Filing Date: 2007-08-14
Classification: H04N

Abstract:
1. A moving image coding method for coding a moving image, every macro block which forms a predetermined area of a present image, with using intra coding in which image data are orthogonal-transformed, and then image data after the orthogonal-transformation are quantized and variable-length coded, and inter coding in which a motion vector of the present image relative to a reference image is detected, motion compensation for the reference image with using the motion vector is performed, differential data between the present image and the reference image after the motion compensation are orthogonal-transformed, and then differential data after the orthogonal transformation are quantized and variable-length coded, and for storing, for purpose of the inter coding, a reference image of image frame next to the present image generated by inverse-quantizing and inverse-orthogonal-transforming image data after the quantization or differential data after the quantization in a reference image memory, comprising the step of: determining position of a macro block which is intra-coded or inter-coded, in a range of the maximum number of macro blocks inter-coded in one image frame, when an image (Mth frame M≦N−1) prior to a present image (Nth frame) is coded.