Image data display control method and an image display device thereof

摘要

In an image data display control device wherein image data that are stored in a video RAM are to be sequentially read and converted into video signals for a display, writing and reading of the image data in the video RAM is so controlled that the capacity of the video RAM can be reduced. The image data display control device that performs such an operation includes a video RAM having an area for storing image data; a converter, which converts image data read from the video RAM into video signals; and a controller, which writes image data to the video RAM and reads the image data from the video RAM. The controller switches between the two areas that are obtained by dividing the area of the video RAM for storing the image data in order to alternately perform data writing and data reading.