Route guidance apparatus and method
First Claim
1. An apparatus for generating route guidance information based on route information supplied from outside, comprising:
- a storage unit configured to store road network data including a plurality of nodes and a plurality of arcs each connecting two nodes, and a plurality of expressions of route guidance in correspondence with a junction pattern and an advance direction of the junction pattern;
a road pattern analysis unit configured to analyze an angle difference between two roads each connected to a junction of the route information and a pattern of the junction by referring to the road network data;
a route guidance information generation unit configured to generate the route guidance information based on the expression of route guidance corresponding to a result of the analysis; and
a presentation unit configured to present the route guidance information.
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Abstract
A database stores map data including road network data and landmark data. A route search unit searches for a route from a departure point to a destination point from the road network data stored in the database. A road pattern analysis unit analyzes a route pattern of the route by referring to the road network data, and obtains road pattern data as the analysis result. A landmark selection area decision unit determines a landmark selection area for route guidance along the route based on the road network data and the road pattern data. A landmark selection unit selects landmark data included in the landmark selection area from said database. A route guidance information generation unit generates route guidance information of the route using the road pattern data and the landmark data selected by the landmark selection unit. A presentation unit presents the route guidance information.
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Citations
4 Claims
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1. An apparatus for generating route guidance information based on route information supplied from outside, comprising:
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a storage unit configured to store road network data including a plurality of nodes and a plurality of arcs each connecting two nodes, and a plurality of expressions of route guidance in correspondence with a junction pattern and an advance direction of the junction pattern;
a road pattern analysis unit configured to analyze an angle difference between two roads each connected to a junction of the route information and a pattern of the junction by referring to the road network data;
a route guidance information generation unit configured to generate the route guidance information based on the expression of route guidance corresponding to a result of the analysis; and
a presentation unit configured to present the route guidance information. - View Dependent Claims (2)
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3. A method for generating route guidance information based on route information supplied from the outside, comprising:
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storing road network data including a plurality of nodes and a plurality of arcs each connecting two nodes, and a plurality of expressions of route guidance in correspondence with a junction pattern and an advance direction of the junction pattern;
analyzing an angle difference between two roads each connected to a junction of the route information and a pattern of the junction by referring to the road network data;
generating the route guidance information based on the expression of route guidance corresponding to the analysis result; and
presenting the route guidance information. - View Dependent Claims (4)
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Specification