Method for updating a digital road map
US9291465B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2013 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Oct 29, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3819
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods are provided for updating a digital road map in which road segments having segment lengths are stored. At least two vehicles are equipped with at least one respective onboard unit generating position readings. If a first set of position readings of a first onboard unit can be associated with a road segment, a first path length is determined based on the position readings of the first set. If a second set of position readings of a second onboard unit can be associated with the road segment, a second path length is determined based on the position readings of the second set. An average path length is calculated based on at least the first and second path lengths. If the average path length deviates from the stored segment length, the average path length is stored as an updated stored segment length of this road segment in the digital road map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.