| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To perform display performance by a synthetic image of a movie image and a sprite image based on moving image data whose data quantity is reduced without degrading the image quality of the sprite image. <P>SOLUTION: In V blank interruption processing, processing for instructing development of a new movie image and processing of instructing using of a movie image used last time are carried out alternately. Consequently, plotting control of the same image is carried out twice about plotting control of the movie image into the plotting area of VRAM. Thus, the sprite image (an image A and and an image B) is displayed and switched every 16.7 ms, and the movie image (an image (a) and and an image (b)) is displayed and switched every 33.3 ms. Thus, it is possible to perform display performance by the synthetic image of the movie image and the sprite image based on the moving image data whose data quantity is reduced without degrading the image quality of the sprite image. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
