METHOD OF EFFICIENTLY ROTATING IMAGE DEFINED BY IMAGE MATRIX WITH EACH PIECE OF DATA IMAGE CORRESPONDS TO SPECIFIED IMAGE ROW AND COLUMN OF IMAGE MATRIX, GRAPHICS CONTROLLER AND IMAGE DISPLAY SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a method and apparatus for efficient rotation of image.;SOLUTION: The invention is generally directed toward the method and apparatus for efficient rotation of the image. Images are preferably defined by an image matrix, in which each piece of data of the image corresponds to a particular image row and column of the image matrix. A preferred method includes mapping of each piece of the data into a memory matrix organized into a plurality of memory rows and columns. The mapping, preferably, includes mapping into one of the memory rows: (a) at least two data, both of which corresponds to one of the image rows, and (b) at least two image vector portions, a first one of the image vector portions including at least two data each corresponding to one of the image columns, and a second one of the image vector portions, including at least two other data each corresponding to another one of the image columns, respectively. In addition, it is preferable that at least two pieces of data of the first image vector portion and at least two other piece of data of the second image vector portion each correspond to the same image rows, respectively.;COPYRIGHT: (C)2007,JPO&INPIT