Navigation system
A first navigation system is provided with: a present position detecting device for detecting a present position; a plurality of memory devices each capable of reading out map data which is recorded therein; a navigation controlling device for controlling a navigation operation in correspondence wit...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A first navigation system is provided with: a present position detecting device for detecting a present position; a plurality of memory devices each capable of reading out map data which is recorded therein; a navigation controlling device for controlling a navigation operation in correspondence with the detected present position by using the map data; and a map data reading device for accessing one of the memory devices, which is selected in accordance with a predetermined condition, and reading out the map data required for the navigation operation therefrom. |
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