DEVICE FOR STORING IMAGE

摘要

PURPOSE:To store an image temporarily erased from a picture on a VRAM, to control the storage area, to accelerate a re-displaying image display speed without increasing load on an application side in a window system. CONSTITUTION:This device is provided with a display image storage VRAM means 11 storing the image of the display picture 10, an image retreat VRAM means 12 retreating the image temporarily erased, an image retreat RAM means 13 storing the image when no image is stored in the means 12, an image control means 14 selecting any one of storage areas and an optimizing means 15 investigating the condition of the stored image, selecting the image with low priority and transferring it to the image retreat RAM means 13.