Cellular telecommunication switching system for providing public emergency call location information
US5388147A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1993 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Aug 30, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/006
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A cellular telecommunication switching system responsive to an emergency call from a cellular telephone to request that the geo-coordinates be transmitted from the cellular telephone and to convert those coordinates into conventional municipality or rural address location information. In one embodiment, the cellular telecommunication switching system utilizes an internal database to convert the geo-coordinates to location information. In another embodiment, the cellular telecommunication switching system utilizes an external database to perform this conversion. In yet a third embodiment, a cellular telephone performs the conversion and transmits to the cellular telecommunication switching system the location information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.