Vehicular emergency message system with call restriction defeating
US5890061A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1996 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Feb 9, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/007
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A vehicle user can request emergency or roadside assistance from a response center by activating a button in the vehicle. The global positioning system is used to continuously store the vehicle location. A cellular telephone network is used to contact a response center and transfer a data string via modem containing information to assist the response center in acting on the request. Prior to attempting dialing of the cellular transceiver, a command or set of commands places the cellular transceiver into an unrestricted operating mode to provide the greatest probability of completing a call from the vehicle to the response center and from the response center to the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.