Patent ID: 6075899
Filing Date: 2000-06-13
Classification: H04N

Abstract:
An image decoding apparatus equipped with an image memory that stores a one-screen image by dividing the one-screen image into a plurality of image blocks which are each m pixels wide by n pixels high (where m,n are integers that are equal to or greater than 1),the image memory having an array-like storage region storing s*t first chrominance components (where s,t are integers that are equal to or greater than 1) that compose one of the image blocks and s*t second chrominance components that compose the same one of the image blocks in a first set of serial areas from a start area specified by a row address and a first column address to an end area specified by the same row address and a second column address,and storing m*n luminance components that compose the same one of the image blocks in a second set of serial areas from a different start area specified by a different row address and a third column address to an end area are specified by the different row address and a fourth column address,the image decoding apparatus comprising:differential picture decoding means for decoding a stream inputted from outside to obtain a differential picture and motion vectors;memory access means for reading all of the first chrominance components and all of the second chrominance components that compose a reference picture that is to be blended with the differential picture from the first serial areas and for reading all of the luminance components from the second serial areas; andblending means for blending the first chrominance components, the second chrominance components, and the luminance components read from the serial areas with the differential picture.