Systems and methods for emergency vehicle proximity warnings using digital radio broadcast
First Claim
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 the digital radio broadcast transmission system, the data including first data comprising an emergency alert notification code and second data comprising an emergency alert message configured to be rendered by end-user digital radio broadcast receivers, wherein the first data and the second data are stored as a digitized IBOC waveform including in-phase (I) components and quadrature-phase (Q) components of the digitized IBOC waveform; and
broadcasting a digital radio broadcast signal including the first and the second data using the digital radio broadcast transmission system from the mobile vehicle to the 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 end-user digital radio broadcast receivers as an emergency notification frequency, the digital radio broadcast signal having characteristics that enable the digital radio broadcast signal to be decoded only by the end-user digital radio broadcast receivers located within a localized area in a proximity of the digital radio broadcast transmission system, wherein the digital radio broadcast signal includes a broadcast channel and first and second data channels that are subchannels of the broadcast channel, and the first data is broadcast using the first data channel and the second data is broadcast using the second data channel.
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Accused Products
Abstract
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 be 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.
58 Citations
17 Claims
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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:
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reading data stored in a memory of the digital radio broadcast transmission system, the data including first data comprising an emergency alert notification code and second data comprising an emergency alert message configured to be rendered by end-user digital radio broadcast receivers, wherein the first data and the second data are stored as a digitized IBOC waveform including in-phase (I) components and quadrature-phase (Q) components of the digitized IBOC waveform; and broadcasting a digital radio broadcast signal including the first and the second data using the digital radio broadcast transmission system from the mobile vehicle to the 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 end-user digital radio broadcast receivers as an emergency notification frequency, the digital radio broadcast signal having characteristics that enable the digital radio broadcast signal to be decoded only by the end-user digital radio broadcast receivers located within a localized area in a proximity of the digital radio broadcast transmission system, wherein the digital radio broadcast signal includes a broadcast channel and first and second data channels that are subchannels of the broadcast channel, and the first data is broadcast using the first data channel and the second data is broadcast using the second data channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A digital radio broadcast transmission system of a mobile vehicle, comprising:
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a digital radio broadcast transmitter system including configured for operation in the mobile vehicle, the digital radio broadcast transmitter system including a processing system; and a memory coupled to the processing system, wherein the processing system is configured to; read data stored in the memory, the data including first data comprising an emergency alert notification code and second data comprising an emergency alert message configured to be rendered by end-user digital radio broadcast receivers, wherein the first data and the second data are stored as a digitized IBOC waveform including in-phase (I) components and quadrature-phase (Q) components of the digitized IBOC waveform; and process a digital radio broadcast signal including the first and the second data for broadcasting to the 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 end-user digital radio broadcast receivers as an emergency notification frequency, the digital radio broadcast signal having characteristics that enable the digital radio broadcast signal to be decoded only by the end-user digital radio broadcast receivers located within a localized area in a proximity of the digital radio broadcast transmitter system, wherein the digital radio broadcast signal includes a broadcast channel and first and second data channels that are subchannels of the broadcast channel, and the first data is broadcast using the first data channel and the second data is broadcast using the second data channel. - View Dependent Claims (15, 16)
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17. An article of manufacture comprising a non-transitory computer readable storage medium having computer program instructions for communicating an emergency alert message from a digital radio broadcast transmission system of a mobile vehicle to end-user digital radio broadcast receivers, said instructions when executed are adapted to cause a processing system of the digital radio broadcast transmitter system to:
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read data stored in a memory, the data including first data comprising an emergency alert notification code and second data comprising an emergency alert message configured to be rendered by end-user digital radio broadcast receivers, wherein the first data and the second data are stored as a digitized IBOC waveform including in-phase (I) components and quadrature-phase (Q) components of the digitized IBOC waveform; and process a digital radio broadcast signal including the first and the second data for broadcasting by the mobile vehicle at a predetermined frequency within an FM commercial broadcast band or an AM commercial broadcast band that is recognized by the end-user digital radio broadcast receivers as an emergency notification frequency, the digital radio broadcast signal having characteristics that enable the digital radio broadcast signal to be received only by the end-user digital radio broadcast receivers located within a predetermined localized area in a proximity of the digital radio broadcast transmitter system, wherein the digital radio broadcast signal includes a broadcast channel and first and second data channels that are subchannels of the broadcast channel, and the first data is broadcast using the first data channel and the second data is broadcast using the second data channel.
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Specification