Method and system for obtaining traffic sign data using navigation systems
US7433889B1 · kind B1 · utility
119Cited by
30References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2002 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Apr 24, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method for collecting data for a geographic database is disclosed. Speed and position data are collected using a plurality of mobile computing platforms moving in a geographic region. The speed and position data are analyzed to identify a location of a traffic sign corresponding to a change in the speed. The geographic database is updated to indicate the location of the traffic sign.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.