| 摘要 |
PROBLEM TO BE SOLVED: To real pixel data for a pixel display from an arbitrary area of a display memory for every pixel position on a display screen. SOLUTION: An address translation table 104 sets a position [x', y'] in the pixel matrix of an original screen screen to be displayed in the display pixel position concerned for each display pixel position [x, y] (x=0 to 639, y=0 to 479) in a display screen 100a. A VDP 105 reads out one line of table data of the address translation table 104, corresponding to a the display line from a memory 102 according to horizontal scanning, and stores them in a table memory 107. An address generator 108 generates a readout address, on the basis of the stored data. The memory controller 109 reads out the pixel data for displaying each display pixel position of the display line, according to the readout address from an area to which a frame buffer 103 correspond, and feeds them to a display device 100.
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