| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable a user to much more early get to his or her target place by his or her desired scale in enlarging and displaying a map displayed on a touch panel. <P>SOLUTION: An orbit C to be plotted is estimated while the orbit is plotted, and when it is estimated that the estimated orbit is a specific orbit, either enlargement display or reduction display is processed about a range corresponding to the orbit. The orbit C to be plotted is pre-read, and the orbit is decided at a decision position P before the plotting of the orbit C ends so that the processing can be more quickly achieved than the case of deciding the orbit after the plotting of the orbit C ends. Therefore, it is possible for a user to quickly enlarge the region where the specific orbit is plotted only by plotting a specific orbit with a pen or the like. Also, it is possible for the user to enlarge the region at a stretch without losing his or her way, and to achieve quick operations by making it unnecessary to perform any complicate procedure in enlarging or moving the region. <P>COPYRIGHT: (C)2009,JPO&INPIT |
