| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic map display apparatus which displays a map so that the north of the map automatically is aligned with the true (geographic or magnetic) north when displaying a digital map. SOLUTION: The digital map display apparatus 10 comprises a positioning device 14, a map data access part 16 for accessing to a map database part 16, an electronic compass 12, a processor 20, and a display screen 22. Based on the data from the positioning system 14, the electronic compass 12, and the map database, the processor 20 operates to display an area map including own position of the device 10 on the display screen 22 so that the north of the map always is aligned with the true (geographic or magnetic) north. |
