SYSTEM AND METHOD FOR UPDATING A STATISTICAL DATABASE IN A VEHICLE NAVIGATION SYSTEM
First Claim
1. In a navigation system in a vehicle having a statistical database containing travel data for a plurality of road links, each link having two end nodes, a method of updating data contained in the statistical database comprising the steps of:
- receiving real-time travel data of the vehicle for at least one of the road links in the statistical database as the vehicle travels betweens the end nodes of said at least one road link,processing said acquired real-time travel data in the navigation system which meets preset criteria for said at least one road link to produce processed travel data, andupdating the road link data for said at least one road link in the statistical database in the navigation system with said processed travel data.
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Abstract
In a navigation system of a vehicle having a statistical database containing travel information for a plurality of road links, a method and system for updating data contained in the statistical database. Real-time travel data for the vehicle is acquired for at least one of the road links in the statistical database as the vehicle travels between the end nodes of that road link. The acquired real-time travel data is then processed to ensure that it meets certain criteria, e.g. the absence of nonrepeating incidents. Travel data which meets that criteria is then utilized to update the road link data in the statistical database. The travel data acquisition, processing and updating of the statistical database is performed internally in the navigation system without interconnecting to external servers.
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Citations
21 Claims
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1. In a navigation system in a vehicle having a statistical database containing travel data for a plurality of road links, each link having two end nodes, a method of updating data contained in the statistical database comprising the steps of:
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receiving real-time travel data of the vehicle for at least one of the road links in the statistical database as the vehicle travels betweens the end nodes of said at least one road link, processing said acquired real-time travel data in the navigation system which meets preset criteria for said at least one road link to produce processed travel data, and updating the road link data for said at least one road link in the statistical database in the navigation system with said processed travel data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. In a navigation system in a vehicle having a statistical database containing travel information for a plurality of road links, each link having two end nodes, a system for updating data contained in the statistical database comprising:
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means for receiving real-time travel data of the vehicle for at least one of the road links in the statistical database as the vehicle travels betweens the end nodes of said at least one road link, means for processing said acquired real-time travel data in the navigation system which meets preset criteria for said at least one road link to produce processed travel data, and means for updating the road link data for said at least one road link in the statistical database in the navigation system with said processed travel data. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. In a navigation apparatus in a vehicle having a statistical database containing travel information for a plurality of road links, each link having two end nodes, a system for updating data contained in the statistical database comprising:
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a receiver for real-time travel data of the vehicle for at least one of the road links in the statistical database as the vehicle travels betweens the end nodes of said at least one road link, a processor of said acquired real-time travel data in the navigation system which meets preset criteria for said at least one road link to produce processed travel data, and an updater for the road link data for said at least one road link in the statistical database in the navigation system with said processed travel data. - View Dependent Claims (20, 21)
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Specification