| 摘要 |
PURPOSE:To optimize a display displacement process by securing an active state which undergoes both clear and tacit display replacements, an inactive state which undergoes only the clear display replacement and an undisplayed invisible state for a multi-view port that displays the same graphic data at plural positions. CONSTITUTION:The same effect as the display control of a graphic kernel system can be secured as long as only one view port is active and at the same time a tacit display replacement mode of a partial correction type is equal to an automatic mode. In case a multi-view port is applied, the states of only the necessary number of view ports are activated or inactivated. Then such display displacement as addition of a single piece of segment, etc., is carried out to the active view ports only especially when the displacement of display is instantaneously reflected to the screen or only the view ports are activated. In addition, the displacement of display is also possible to such inactive view port that is suppressed for the displacement of display in the desired timing of application. Thus it is possible to avoid the updating of display with the undesired view ports and to improve the conformity of an interactive process. |
