| 摘要 |
Image data representing a two-dimensional image is stored in N data storage devices driven in parallel. The two-dimensional image is divided into small divisional areas arranged in rectilinearly oriented lines and rows such that the number of areas in each line is equal to 2N and the number of areas in each row is equal to or less than 2N. The small divisional areas are stored in the N data storage devices such that no more than two of the areas in the same line are stored in the same storage device and no more of than two of the areas in the same row are stored in the same storage device. Additionally, two areas from the same line which are stored in the same storage device are positioned either adjacent to one another in the line or at opposite ends of the line and two areas from the same row which are stored in the same storage device are positioned either adjacent to one another in the row or at opposite ends of the row. The two-dimensional image is displayed on a display device by reading the small divisional areas out of the storage devices in parallel and supplying the data to the display device through a buffer memory. One data access procedure reads out the image data in its original orientation and a second data access procedure reads out the image data rotated at 90 degrees relative to the original orientation.
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