Electronic navigation system and method
US7924173B2 · kind B2 · utility
3Cited by
58References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2007 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Oct 9, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/091
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The invention provides a system for providing geographic information. The system includes a mobile unit having a first geographic database and a base unit having a second geographic database that is more up-to-date than the first geographic database. The base unit receives a request from a mobile unit for updated geographic data. The base unit identifies a portion of the second geographic database that corresponds to the request and provides a response to the mobile unit comprising the identified portion of the second geographic database.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.