| 摘要 |
<p>An information center (10) provides a terminal (22) with the positional information, when requested by the terminal (22), on the position of facility such as a parking lot as relative position data using a feature object such as its access road. The terminal (22) corrects the facility position by computing the difference between the received position of the feature object and the position of the feature object in its own map database (24), using a map matching computer (34). The terminal (22) sends again relative data on another road if the feature object is not stored in its map database (24).</p> |
