| 摘要 |
A mask process such as smoothing of a graphic or a character drawn into a bit pattern is performed by using only SHIFT, logical NOT, AND, OR operations of bit strings, rather than using conditional branch instructions in the form of "IF THEN ELSE" and "SWITCH" statements that lead to undesirable reduction of processing speed. This results in a substantial increase of the processing speed. Further, in order to process an image that is wider than a bus width or a register length at high speed, adjacent patterns of an original image, which are not necessarily used for a logical operation, are loaded onto left and right sides of a processing object, to form a processing unit for use in a logical operation. |
