Navigation device and map data updating method thereof
US8249801B2 · kind B2 · utility
7Cited by
4References
13Claims
0Family size
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Key dates
| Filing date | Mar 31, 2008 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Jul 18, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3896
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
When updating means 24 for performing a differential update on map data M using update data U performs an update on the map data M using update data U stored on a recording medium R, update data U having section identification information that matches the section identification information of the map data M and a later update version than the update version of the map data M are extracted from the plurality of update data U stored on the recording medium R, and a differential update is performed on the map data M using the extracted update data U.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.