| 摘要 |
<p>A navigation apparatus (S) for a movable body which assists in moving with a map while at least displaying the map is provided. A first information storing medium (DK) stores map data corresponding to the map thereon. A detecting device (4) detects displayed map data corresponding to the map already displayed at least once from the first information recording medium (DK). Then, a recording device (4) records the displayed map data detected by the detecting device (4) on a second information storing medium (HD), which has higher access speed than the first information storing medium (DK). <IMAGE></p> |
