| 摘要 |
PROBLEM TO BE SOLVED: To provide a map display device which can automatically change the scale of a loop-like link path to be displayed on a map to that suitable for actual guidance of courses. SOLUTION: When a guided intersection belongs to a loop-like link path, the center of the loop-like link path is set at the center of the display on a screen to make an adjustment so that the whole of the loop-like link path can be held within the display region of the screen while being on display exceeding a specified size. When a guided branch point belongs to the loop-like link path, the display of the map can be realized from a point of view of 'display the whole of the loop-like link path containing the guided branch point in a proper size', in stead of 'display the peripheral area of the guided branch point'. Therefore, a user looking at the map can confirm that the loop-like path on display must link to a high level road as he desires to advance thereby enabling him to judge with a confidence that turning at a slant branch as displayed is right. |
