G - Physics – 01 – C
Patent
G - Physics
01
C
G01C 21/26 (2006.01) G01C 21/32 (2006.01) G06F 17/30 (2006.01)
Patent
CA 2616747
The present invention relates to a method for updating a first navigation database of a vehicle navigation system that stores data in blocks, each of the blocks containing at least one record specifying a source object or a derived object that is derived from a source object, comprising the steps of providing a second navigation database storing data in blocks corresponding to the blocks of the first navigation database, each of the blocks containing at least one record specifying a source object or a derived object that is derived from a source object, wherein the second database differs from the first navigation database at least in one of the source objects; compiling source objects of the first navigation database to generate derived objects of the first navigation database; compiling a subset of source objects of the second navigation database that consists only of source objects that differ from the corresponding source objects specified in the first navigation database to generate derived objects of the second navigation database and comparing the blocks of the first navigation database with the corresponding blocks of the second navigation database to determine blocks of the second navigation database that differ from the corresponding blocks of the first navigation database.
Harman Becker Automotive Systems Gmbh
Oyen Wiggs Green & Mutala Llp
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