| 摘要 |
PROBLEM TO BE SOLVED: To provide a navigation device and drawing method of a crossing guide map capable of drawing a guide map easy to sea by a driver, when displaying a large roundabout guide map. SOLUTION: When performing crossing guide by displaying a crossing enlarged view on a screen, if it is determined that a guide crossing is a roundabout by a crossing determination part 31, and that the roundabout has a prescribed size or larger by a size determination part 32, a guide route generation part 24 uses the screen for double-screen display, draws a map image with a reduced scale by which the whole roundabout is stored within an image display domain on one screen, and draws a partial enlarged view of the roundabout by deforming it on the other screen, to thereby enable a user to know his own position in the whole roundabout, and draws a partial enlarged view not deformed even in the case of a huge roundabout, to thereby enable the user to know which direction to be followed at a branch point. COPYRIGHT: (C)2008,JPO&INPIT |
