Here Global B.v.

Andre Reichert

Martin Pfeifle

Jonghyun Suh

Tomas Jurco

David Schmitz

A method and apparatus are provided for creating a navigation data source for use with a navigation system configured for route determination based on associated costs. The navigation data source comprises a cost data set associated with a navigation data set that represents a map of a geographic region and defines at least a plurality of gateways. Each of the gateways of the plurality of gateways may be associated with a position located within the geographic region and associated with a gateway of a further navigation data set representing a map of another geographic region. The cost data set comprises cost data that defines, for at least some of the possible gateway pairs of the plurality of gateways, at least a cost value with each cost value indicating a cost for a route between gateways of a respective gateway pair.

Gateway cost data sets for fast routing

A geographic database is defined using hierarchical data trees and updated by changing selected portions of a data tree. A device defines a binary large object (BLOB) including map data as a first data tree and an update to the map data as a second data tree. The device computes a difference between the first data tree and the second data tree. The difference may include the data and links that are being updated. The device generates an update script including a sequence of edit operations needed to update the map data. The device may communicate the update script to a navigation device, which is configured to execute the update script to perform the update on a local version of the map data.

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Darmstadt, Germany

Andre Reichert