Vehicular emergency message system with automatic periodic call-in
US5686910A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1995 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Apr 10, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/127
- 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. The vehicle installed system initiates an automatic call-in to the response center if the elapsed time since the last successful connection with the response center is greater than a predetermined time. Data is transmitted during the automatic call-in that identifies the vehicle and verifies to the response center that a particular system is operative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.