Navigation apparatus
First Claim
1. A navigation apparatus for providing course guidance for travel to a destination comprising:
- memory means for storing geographical data, said geographical data being in a hierarchical structure including region data pertaining to geographical regions and point data indicative of a plurality of geographical points located within said regions;
region input means for selecting one of said regions;
destination setting means for selecting one of said geographical points within the selected region as a set destination;
present position input means for designating one of said geographical points as the present position;
course search means for providing guidance information for travel to the set destination from said present position; and
display means for displaying said guidance information.
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Abstract
A navigation apparatus, in which guidance information for travel to a desired destination is outputted upon inputting the desired destination, has an input unit for inputting a desired destination, a memory unit for storing guidance information and destination information, and a display unit for outputting the guidance information and input information from the input unit, characterized in that the destination information has region name data and information data related to regions, and information data relating to a region is obtained by inputting the region name from the input unit. When input of the name of a prefecture, city or town for which a destination has not been specified is selected, a course search routine is executed in which a prefecture name list, city name list and town name list are retreived in order by the entry of prefecture name, city name and town name, the storage addresses of an intersection list and landmark list are obtained and an intersection at the destination is set. Accordingly, even in case of ambiguity where a destination cannot be specified, a concrete destination, such as a representative intersection or a representative landmark, is called from the ambiguous destination so that navigation to this destination can be performed.
147 Citations
6 Claims
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1. A navigation apparatus for providing course guidance for travel to a destination comprising:
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memory means for storing geographical data, said geographical data being in a hierarchical structure including region data pertaining to geographical regions and point data indicative of a plurality of geographical points located within said regions; region input means for selecting one of said regions; destination setting means for selecting one of said geographical points within the selected region as a set destination; present position input means for designating one of said geographical points as the present position; course search means for providing guidance information for travel to the set destination from said present position; and display means for displaying said guidance information. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification