| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-vehicle map display capable of displaying a map with a road shape of a round-about displayed correctly. SOLUTION: Link expansion areas 41, 42, 43 shown in (b) are set at first in the road of link structure shown in (a) constituting the round-about. Then, junction curves 51, 52 are set to join respectively the adjacent fellow link expansion areas. The junction curves 51, 52 are moved thereafter to positions shown in (c) contacting with links 31, 32, 33, the moved junction curves 51, 52 are connected to the links 31, 32, 33 to find a line shown in (d). The map expressing the road shape of the round-about is displayed, based on a shape of the line. COPYRIGHT: (C)2007,JPO&INPIT |
