| 摘要 |
PURPOSE:To provide a method to carry out picture-drawing processing of continuous same patterns at high speed while finishing computing process from a picture-drawing pattern data to a bit image at one time. CONSTITUTION:A data input processing part 1 receives an input picture-drawing data and compares the picture-drawing pattern data and a held data of a picture-drawing pattern data memory 2. In the case where they are different patterns or there is no held pattern, control is moved to a data processing part 3, and when they are the same patterns, control is moved to a picture- drawing processing part 5. The data processing part 3 stores the picture-drawing data in the picture-drawing pattern data memory 2, calculates a bit image and stores it in an image cash memory 4. At the picture-drawing processing part 5, a held bit image of the image cash memory 4 is read out, an address on a frame memory is calculated from a picture-drawing coordinate data out of the input picture-drawing data, the aquired bit image is written in it and a picture-drawing is displayed on a bit map display. |
