| 摘要 |
PURPOSE:To relatively paint out a closed pattern via hardware by shifting a pattern based on the calculated number of shifts so that the drawing start position of the closed pattern is coincident with a prescribed position when a pattern is buried at a scan reference position. CONSTITUTION:The shift number given to a barrel shifter 3 reaches a level where the start point of a closed pattern is coincident with the start point of a 32-bit pattern when this pattern shifted by an amount equal to said shift number is successively buried at and after the scan start point. Then a position shifted from the scan start point of the closed pattern is detected by a data position detecting circuit 4. The pattern read out of a pattern memory 1 by the shifter 3 based on the detected position data is shifted so that the coincidence is obtained between the start positions of the closed pattern and said read-out pattern. Thus it is possible to paint out relatively the closed pattern via a hardware circuit. |
