Process for updating map data and navigation system
First Claim
1. A process for updating map data of a navigation system in a vehicle (20), wherein the navigation system includes a digital map (12) of a road-and-path network as well as a digital supplemental map (22), wherein in the digital supplemental map (22) data supplemental to the road-and-path network is stored, comprising the stepsa) producing differential data (18) for an updated digital map (14) using the digital map (12),b) replacing the digital map (12) in the vehicle with the updated digital map (14),c) updating the digital supplemental map (22) in the vehicle using the differential data (18).
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Accused Products
Abstract
The invention concerns a process for updating map data of a navigation system in a vehicle, wherein the navigation system includes a digital map of a road and path network as well as a digital supplemental map, wherein in the digital supplemental map data supplemental to the road and path network are stored. The process includes the steps:
- a) producing differential data for an updated digital map, using the digital map,
- b) replacing the digital map in the vehicle with the updated digital map,
- c) updating the digital supplemental map in the vehicle using the differential data.
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Citations
9 Claims
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1. A process for updating map data of a navigation system in a vehicle (20), wherein the navigation system includes a digital map (12) of a road-and-path network as well as a digital supplemental map (22), wherein in the digital supplemental map (22) data supplemental to the road-and-path network is stored, comprising the steps
a) producing differential data (18) for an updated digital map (14) using the digital map (12), b) replacing the digital map (12) in the vehicle with the updated digital map (14), c) updating the digital supplemental map (22) in the vehicle using the differential data (18).
- 5. A navigation system for a vehicle including a digital map of a road-and-path network and a digital supplemental map in which data supplemental to the road-and-path network is stored, wherein the onboard system is adapted to recognize in the vehicle (20) whether the digital map (12) has been replaced with an updated digital map (14), and as needed requests differential data (18) for updating the digital supplemental map (22), wherein the differential data (18) is produced using the digital map (12) and the updated digital map (14).
Specification