| 摘要 |
PURPOSE:To execute a graphic processing such as a drawing update and picking input at a high speed by controlling graphic data by the existence range table of a segment. CONSTITUTION:A control memory 4 of a displaying control device 3 is equipped with a segment range table 41, a priority table 42 to store the priority of the segment displayed at the displaying screen and so on besides a segment buffer memory 40. The range in which respective segments stored at the segment buffer memory 40 exist, is stored into the segment range table 41 beforehand, the displaying graphic is changed, the new graphic is constituted, and then, for the range related to the change of the changed segment, the changing and processing of the change range of the graphic are executed by referring to the segment range table 41. |
