Patent ID: 8290699
Filing Date: 2012-10-16
Classification: G01C,G08G

Abstract:
1. For use with a vehicle navigation system having a map database divided into geographic meshes, each mesh containing a plurality of road links of different types, wherein a first set of said meshes contain traffic flow data while a mutually exclusive second set of said meshes contain primarily statistically preassigned speed values, a method for geographic interpolation of traffic data comprising the steps of: identifying one or more borders between said first set and said second set of said meshes, creating a zone of blend meshes from one of said first and second sets of meshes by selecting at least one mesh adjacent each said border so that said blend meshes are interposed between said first and said second set of meshes, adjusting the traffic data for each type of road link in the blend meshes to a value between adjacent meshes in said first set of meshes and adjacent meshes in said second set of meshes for each type of road link, storing said adjusted traffic data for said blend meshes.