Display method and apparatus for arranging order of listing points of interest for navigation system
First Claim
1. A display method for a navigation system for guiding a user to a destination, comprising the following steps of:
- determining a route to the destination;
specifying a search area by selecting a distance range on the route from a user position and by defining a radius of a region circle;
creating a plurality of region circles consecutively on the route;
retrieving points of interest (POIs) within the search area;
calculating a modified distance of each POI based on distances from two (first and second) reference points on the route in two consecutive region circles to the POI and distances from the user position to the two centers; and
listing the POIs in the order of modified distance calculated by the above process.
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Abstract
A display method and apparatus for navigation system enables a user easily see a list of points of interest (POIs) along a route to a destination. The POI names are arranged in the order that the user sees the POIs along the route. The method first determines a route to the destination, and specifies a search area by selecting a distance range on the route from a user position and by defining a radius of a region circle. The method further creates a plurality of region circles consecutively on the route, retrieves points of interest (POIs) within the search area, calculates a modified distance of each POI based on distances from two reference points to the POI and distances from the user position to the two reference points, and lists the POIs in the order of modified distance.
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Citations
26 Claims
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1. A display method for a navigation system for guiding a user to a destination, comprising the following steps of:
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determining a route to the destination;
specifying a search area by selecting a distance range on the route from a user position and by defining a radius of a region circle;
creating a plurality of region circles consecutively on the route;
retrieving points of interest (POIs) within the search area;
calculating a modified distance of each POI based on distances from two (first and second) reference points on the route in two consecutive region circles to the POI and distances from the user position to the two centers; and
listing the POIs in the order of modified distance calculated by the above process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A display apparatus for a navigation system for guiding a user to a destination, comprising:
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means for determining a route to the destination;
means for specifying a search area by selecting a distance range on the route from a user position and by defining a radius of a region circle;
means for creating a plurality of region circles consecutively on the route;
means for retrieving points of interest (POIs) within the search area;
means for calculating a modified distance of each POI based on distances from two (first and second) reference points on the route in two consecutive region circles to the POI and distances from the user position to the two centers; and
means for listing the POIs in the order of modified distance calculated by the above process. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification