IMAGE PROCESSOR

PURPOSE:To shorten a time for the simultaneous movement of plural sprite patterns by rewriting the coordinate data of reference point to the one to represent the absolute coordinate position of a moving destination of the reference point. CONSTITUTION:When moving two sprite patterns simultaneously in a prescribed direction by the same distance, the coordinate data of reference point of a reference point address table 14 is rewritten so that the absolute coordinate position of a common reference point can be changed to the absolute coordinate position of the moving destination. At this time, index data and relative coordinate data are generated from an index table 12 responding to a sprite address from a sprite address generator 22 in a control part 18. And in the table 14, new coordinate data of reference point is outputted setting the index data as an argument. At an adder 16, the vector addition of the relative coordinate data and the coordinate data of reference point is performed, and sprite coordinate data representing the absolute coordinate position of the sprite pattern can be obtained.