Vehicle information system
US6970783B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2003 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Sep 5, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/096883
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A vehicle information system which includes an in-vehicle system and a centralized server system. The in-vehicle system communicates with the server system using a wireless communication link. The vehicle receives a reference signal from a positioning system, computes position data related to the location of the vehicle using the received reference signal, and transmits the position data to the server. The vehicle receives from the server position correction data and determines estimated coordinates of the vehicle, including combining data computed from the received reference signal and the position correction data. Computing the position data and determining the estimated coordinates are performed repeatedly for an interval of time using the same received position correction data, and subsequent to the interval of time, are performed repeatedly without using the received correction data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.