Emergency services dual tone multi frequency (DTMF) function
US9867022B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2014 |
| Grant date | Jan 9, 2018 |
| Priority date | — |
| Expiry date | Aug 9, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W64/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and system for providing emergency location detection service for a vehicle is disclosed. The method and system comprise receiving one or more dual tone multi frequency (DTMF) signals by a vehicle via an active communication channel. The one or more DTMF signals are decoded and perform a corresponding vehicle function. A system and method in accordance with the present invention allows Public Safety Answering Point or 3rd party emergency service provider to send (DTMF) signals over a communication channel to activate vehicle system functions remotely such as engaging vehicle horn, flashing of headlights and/or taillights or emitting radio signals for the purpose of identification of location of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.