Map update data supply apparatus, map data update system, and map update data supply method
US8326531B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 31, 2008 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Oct 11, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3878
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A map update data supply apparatus includes: isolation detection means for detecting the presence and the absence of an isolated state in which some of the roads are isolated from other roads in a road network of target map data due to updating of one or more update target segments of the target map data based on update map data; extraction means for extracting, as update required segments, segments of the update map data, other than the update target segments, that have a road that connects to the isolated some of the roads when it is detected that there is the isolated state; and update data file generating means for generating update data files for the update target segments and the update required segments based on the update map data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.