Patent ID: 8019000
Filing Date: 2011-09-13
Classification: G06T,H04N

Abstract:
1. A coding device which performs coding of frames of motion images, comprising: a frame memory which holds a reference frame that is to be referenced for motion detection for a target block of a coding target frame in motion images; a motion compensation unit, that includes a motion detecting unit and a motion compensated prediction unit, said motion detecting unit for detecting the motion of said target block by repeated motion estimation with reference to said reference frame stored in said frame memory, and said motion compensated prediction unit for performing motion compensation processing for the target block using information on the detected motion, thereby creating a predicted image, and then making a subtraction image between the coding target frame and the predicted image; and a coding unit that performs coding processing for the subtraction image and the information on the detected motion and thereby creates a coded stream, wherein said motion compensation unit further includes a pre-reading memory which stores pixel data beforehand, where said pixel data is part of pixel data in said reference frame, which is to be frequently referenced for motion detection, and which has been transmitted from said frame memory.