Systems and Methods for Emergency Vehicle Proximity Warnings Using Digital Radio Broadcast

摘要

Systems and methods are disclosed for communicating an emergency alert message from a digital radio broadcast transmission system of a mobile vehicle to a digital radio broadcast receiver system. A digital radio broadcast signal including first and second data is broadcasted using the digital radio broadcast transmission system to end-user digital radio broadcast receivers. The first data includes an emergency code, and the second data includes an emergency alert message. The digital radio broadcast signal is transmitted at a predetermined frequency that is recognized by the receivers as an emergency notification frequency. The digital radio broadcast signal can be decoded only by receivers located within a localized area in a proximity of the transmission system. The receivers are configured to automatically tune to the emergency notification frequency to receive the digital radio broadcast signal and render the second data based on a detection of the emergency code within the signal.

主权项

1. A method for communicating an emergency alert message from a digital radio broadcast transmission system of a mobile vehicle to a digital radio broadcast receiver system, the method comprising:
reading data stored in a memory of a digital radio broadcast transmission system, the data including first data comprising an emergency alert notification code and second data configured to be rendered by end-user digital radio broadcast receivers, the second data comprising an emergency alert message; and broadcasting a digital radio broadcast signal including the first and second data using the digital radio broadcast transmission system from a mobile vehicle to end-user digital radio broadcast receivers at a predetermined frequency within an FM commercial broadcast band or an AM commercial broadcast band that is recognized by the digital radio broadcast receivers as an emergency notification frequency, the digital radio broadcast signal having characteristics that enable the signal to be decoded only by digital radio broadcast receivers located within a localized area in a proximity of the transmission system.