METHOD AND APPARATUS TO FILTER AND DISPLAY ONLY POIs CLOSEST TO A ROUTE
First Claim
1. A navigation system comprises:
- a user interface;
an information receiver adapted to receive information about current location of a user;
at least one database to store and provide maps, road networks, geographical features, and point-of-interest (POI) information;
a route generating unit to retrieve the map and road network data from the database and generate a calculated route; and
a POI searching unit adapted to search POIs in a predetermined searching range and a predetermined searching distance according to user'"'"'s current position at the calculated route,wherein the user interface is configured to display POIs with different names which are closest to said calculated route.
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Abstract
This invention relates to an apparatus and a method to display Points-of-Interest (POIs) in a navigation system. More specifically, this invention relates to a navigation-based apparatus and method adapted to filter redundant POIs and display only the POIs closest to the route. In one aspect, the POI display apparatus in the navigation system includes a user interface to display maps and POI information, an information receiver adapted to receive a current location of a user, at least one database to store maps, road networks and POI information, a route generating unit to retrieve the map and road network data from the database and generate a calculated route, a POI searching unit to search POIs in a predetermined searching range and searching distance and a POI filtering unit to divide the POIs discovered by the searching unit into different categories, group the POIs with the same names in each category and sort the POIs in each group according to the distance from the calculated route. In one embodiment, the POI information can be transmitted to the navigation from a remote server or communication networks.
61 Citations
20 Claims
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1. A navigation system comprises:
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a user interface; an information receiver adapted to receive information about current location of a user; at least one database to store and provide maps, road networks, geographical features, and point-of-interest (POI) information; a route generating unit to retrieve the map and road network data from the database and generate a calculated route; and a POI searching unit adapted to search POIs in a predetermined searching range and a predetermined searching distance according to user'"'"'s current position at the calculated route, wherein the user interface is configured to display POIs with different names which are closest to said calculated route. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of filtering redundant POIs and only displaying POIs closest to a route comprises the steps of:
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retrieving road network data, map data and geographical features, and POI information from at least one database; generating a calculated route based on current position of a user and a destination input by a driver; searching said POIs in a predetermined searching distance and a predetermined searching range according to the user'"'"'s position and the calculated route; and displaying at least a portion of said POIs which are closest to said calculated route. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An apparatus for displaying POIs closest to a route comprises:
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a display unit; a position measuring unit to provide a user'"'"'s current position; a route generating unit to generate the route; and a POI searching unit adapted to search POI information in a predetermined searching range and a predetermined searching distance according to current the user'"'"'s current position at the calculated route, wherein the POIs retrieved by said searching unit are further divided into different categories, grouped with the same POI names in each category and sorted according to a distance from the route in each group, and the POIs from each different groups which are closest to the route are displayed on the display unit. - View Dependent Claims (14, 15, 16)
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17. A mapless navigation system comprises:
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a user interface; a position measuring unit to provide a user'"'"'s current position; a route generating unit to generate the route; and a POI searching unit adapted to search POI information in a predetermined searching range and a predetermined searching distance according to current the user'"'"'s current position and the calculated route, wherein the POIs retrieved by said searching unit are further divided into different categories, grouped with the same POI names in each category and sorted according to a distance from the route in each group, and different POIs which are closest to the route are displayed on the user interface. - View Dependent Claims (18, 19, 20)
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Specification