| 摘要 |
PURPOSE: To inform a driver of his own detailed position and simultaneously the positional relationship to a destination, etc., by displaying a map including his own vehicle position, the destination, etc., and a map of the detail of the periphery of his own vehicle position on a screen. CONSTITUTION: Map data of a unit corresponding to a present position is read from a CD-ROM 37, and stored in a D-RAM 42. A CPU 10 first selects the map data of a reduction scale in which driver's own vehicle position and a destination are contained on the same screen from the stored map data of the RAM 42, and an image processor 45 converts it into image data and writes it in a V-RAM 46. Then, a further detailed reduction scale map display data is read from the ROM 37, and the image data is similarly stored in the RAM 46. Both the stored images are output, superposed, and displayed on a display 38A. In this case, a predetermined range near his own vehicle position in the display range is displayed by the map scale, and the outside indicates the map of a wide range including the destination, etc. |
