Patent ID: 8990008
Filing Date: 2015-03-24
Classification: G01C

Abstract:
1. A method for determining points of interest, or POIs, in a vicinity of a predetermined location with known coordinates, on the basis of digital cartographic data and a predetermined search time and a predetermined number of POI hits, the method being performed in a navigation device and comprising the following steps: determining, by a processor of the navigation device, on the basis of the cartographic data, a size of an initial search field that includes the predetermined location, wherein the size of the initial search field is determined on the basis of stored local POI densities that are assignable to the cartographic data; searching, by the processor, for POIs in the search field; and iteratively enlarging, by the processor, a size of the search field and searching for POIs in the enlarged search field until the predetermined search time has elapsed or the number of found POIs attains the predetermined number of POI hits.