| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the use efficiency of image data save and storage section and the hit ratio of the image data saved therein. <P>SOLUTION: The image data save and storage section 3 includes a first save area 3a for preferentially storing the image data of a screen highest in display frequency, and a second save area 3b for temporarily and preferentially storing the image data of a screen next highest in display frequency. A display image controller 4 transfers and stores the image data of the present display screen into the first save area 3a when the present display frequency is higher as compared to the maximum display frequency of the image data stored in the first save area 3a. When the present display frequency is lower than the same, the controller compares the present display frequency with the next highest display frequency of the image data stored in the second save area 3b and when the present display frequency is higher than the same, the controller transfers the image data of the present display screen to the second save area 3b and stores the same. <P>COPYRIGHT: (C)2007,JPO&INPIT |
