| 摘要 |
PURPOSE:To paint out the inside of the contour of a character or a graphic composed of black start point information B and white start point information W at high speed. CONSTITUTION:The n address/subtracters with zero detection circuits are connected in the shape of a cascade so as to add / subtract '1' to an output Di-1 from a preceding step according to inputted black start point information Bi and white start point information Wi, to output a result Di to the next step, to output a bit '1' as paint-out information Zi when the Di is excepting for zero and to output a bit '0' when the result is zero. Each adder/subtracter decides whether dotting is executed with black or white based on the black start point information Bi, white start point information Wi and added/ subtracted result Di. |
