Patent ID: 6952448
Filing Date: 2005-10-04
Classification: H04N

Abstract:
1. An image coding apparatus comprising: a) an input unit, adapted to input image data; b) an image changing unit, adapted to subject the image data to continuous enlargement or reduction processing; c) a speed discriminating unit, adapted to discriminate a plurality of processing speeds of said image changing unit; and d) an encoder, adapted to encode the image data from said image changing unit in a coding mode which uses an I-picture, a P-Picture, and a B-Picture, in a case in which a discrimination result of said speed discriminating unit indicates one of a low processing speed and no image changing operation, encode the image data from said image changing unit in a coding mode which uses only the I-picture and the P-picture, in a case in which the discrimination result indicates a middle processing speed, and encode the image data from said image changing unit in a coding mode which uses only the I-picture, in a case in which the discrimination result indicates a high processing speed.