Method and apparatus utilizing both statistical and real time data for a vehicle navigation system
AssigneeXanavi Informatics Corporation
InventorsKimiyoshi Machii, Sadanori Horiguchi
Life of this patent
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Abstract
A method for determining a preferred route of road links between an origin and a destination in a vehicle navigation system. A boundary is established the origin and a destination and real time road link data is acquired for road links between the origin and the boundary. Similarly, road link data from a statistical database is retrieved from a road link database for road links between the boundary and the destination. The preferred route between the origin and the destination is then calculated as a function of both said real time road link data and statistical road link data and the calculated route is displayed on a screen.
Claims18
A method for determining a preferred route having a number of road links between an origin and a destination in a vehicular navigation system comprising the steps of:
- establishing a boundary between the origin and the destination,
- acquiring real time road link data, if available, for road links between the origin and said boundary,
- retrieving from a database statistical road link data for road links between said boundary and the destination,
- calculating the preferred route between the origin and the destination as a function of said real time road link data and said statistical road link data, and
- displaying the preferred route.
Apparatus for determining a preferred route having a number of road links between an origin and a destination in a vehicular navigation system comprising:
- means for maintaining a statistical road link database,
- means for acquiring real time road link data, if available, for road links between the origin and said boundary,
- means for establishing a boundary between the origin and the destination,
- means for retrieving road link data between said boundary and the destination from said statistical road link database,
- a processor which calculates the preferred route between the origin and the destination as a function of said real time road link data and said statistical road link data, and
- means for displaying the preferred route.
Dependencies are inferred from the claim text.