Emergency vehicle warning system and method
US5757284A · kind A · utility
Inventors
Key dates
| Filing date | Jun 6, 1995 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Jun 6, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/0965
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system and method for alerting a driver of a motor vehicle of the approach of an emergency vehicle in an emergency state, comprising a transmitter in the emergency vehicle which produces and transmits a radio frequency signal having a unique audio encoded data signature modulated thereon when the emergency vehicle is in an emergency status, a receiver in motor vehicle which receives the radio frequency signal, demodulates and decodes the radio frequency signal and produces a voltage output when the data signature is present; and an alarm producing device which produces an alarm in response to the voltage output warning the driver of the motor vehicle of the approach of the emergency vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.