Techniques are described for performing automated operations related to determining and providing information about buildings in multiple geographical regions in response to a query with partial descriptions of the regions and optionally partial descriptio...

In an aspect, a user device or a server may obtain a global navigation satellite system (GNSS) position of the user device, a sensor-based trajectory of the user device, or both. The user device or the server may filter map data indicating possible routes ...

A method for generating a database (50) of a geographical map of a navigation device (40), the geographical map (50) covering a geographical area which is divided into several update regions (51a, 52a), the method comprising the steps of: - identifying at ...

The method involves selecting a network breakdown consisting of at least two cells (4), whereby at least one boundary node (7) is present in each cell that is connected via at least one boundary edge to a boundary node of another cell, planning optimal par...

A method and system are disclosed for the merging of multiple map databases. These multiple map databases can be stored on separate media. Each map database is comprised of whole parcels and conforms to a baseline parcelization pattern. At run time in a na...

The method involves determining a second coordinate system defined in relation to the first coordinate system, determining the coordinates of the sought position in the second coordinate system, locating the second coordinate system in the digital map and ...

Method in which segments representing road sections (101-128) and defined nodes (a-s) at crossroads of fixed distances along the roads are called up from a CD-type memory device to be stored in RAM. To minimize memory requirements only road section and nod...