Method for updating map data used in on-vehicle navigation apparatus, map data update system, authentication key generation apparatus and navigation apparatus
US7577520B2 · kind B2 · utility
44Cited by
12References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 19, 2005 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Jul 22, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/081
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a map data update method for updating map data used in an on-vehicle navigation apparatus by installing update map data, an authentication key is generated based upon an apparatus-inherent ID assigned in correspondence to the navigation apparatus and the use of update map data installed in the navigation apparatus is enabled or disabled by verifying the authentication key assigned to the navigation apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.