System and method for terrestrial broadcast of emergency alerts
AssigneesSony Corporatation, Sony Electronics Inc.
InventorsMark Eyer, Robert Blanchard
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Abstract
Systems and methods are disclosed for broadcasting and receiving a terrestrial broadcast signal containing emergency alert information in machine-readable format. The method includes the steps of scanning a Transport Stream associated with the terrestrial broadcast signal. The Transport Stream contains one or more Transport Stream packets and a plurality of tables, which are parsed to identify a channel having a type specified as containing emergency alert information. An MPEG-2 program having said emergency alert information may then be acquired for delivery through a terrestrial broadcast receiver.
Claims26
A method for receiving a terrestrial broadcast signal, the signal containing emergency alert information in machine-readable code, the method comprising:
- scanning a Transport Stream associated with the terrestrial broadcast signal;
- said Transport Stream containing one or more Transport Stream packets;
- identifying one or more Transport Stream packets containing emergency alert information;
- and
- acquiring one or more Transport Stream packets containing the emergency alert information.
A receiver for receiving a terrestrial broadcast signal, the signal comprising a Transport Stream containing emergency alert information in machine-readable code, the receiver comprising:
- a tuner for tuning to a specific channel upon receipt of a terrestrial broadcast signal;
- a demodulator for demodulating the tuned signal;
- and
- a software module configured to parse demodulated Transport Stream packets in said Transport Stream;
- wherein the software module is configured to identify one or more Transport Stream packets containing emergency alert information;
- and
- wherein the software module is configured to acquire one or more Transport Stream packets containing the emergency alert information.
A method for receiving a terrestrial broadcast signal, the signal containing emergency alert information in machine-readable code, the method comprising:
- scanning a Transport Stream associated with the terrestrial broadcast signal;
- said Transport Stream containing one or more Transport Stream packets;
- wherein the Transport Stream comprises one or more tables;
- parsing data relating to one of said one or more tables;
- identifying a channel having a type specified as containing emergency alert information;
- and
- acquiring an MPEG-2 program within said channel, the MPEG-2 program comprising said emergency alert information.
Dependencies are inferred from the claim text.