Method and device for digital television disaster early warning

Abstract

The invention discloses a digital TV disaster early warning method comprising the following steps: receiving a TV program transport stream sent by an information emission end; extracting a corresponding program number and disaster early warning captions from the TV program transport stream; obtaining program frames according to the program number, embedding the disaster early warning captions into the program frames, and displaying the program frames with the embedded disaster early warning captions on a display interface. The invention also discloses a digital TV disaster early warning device; the method receives the TV program transport stream sent by the information emission end, extracts the corresponding program number and disaster early warning captions from the TV program transport stream, obtains the program frames according to the program number, embeds the disaster early warning captions into the program frames, and displays the program frames with the embedded disaster early warning captions on the display interface. By using the method and device, the information emission end needs not to decode the program, add information, encode the program and output the program to users, thus timely carrying out disaster early warning prompting.

Description

technical field

[0001] The invention relates to the field of television technology, in particular to a method and device for digital television disaster early warning. Background technique

[0002] Earthquakes, floods, typhoons and other natural disasters will have a huge impact on people's lives and property. Although the prediction of natural disasters is difficult, the early warning of disasters is feasible. Let’s take an earthquake as an example. At the moment when the earthquake arrives, because the propagation speed of the seismic wave is far less than that of the radio wave (the distance difference is 3.5 kilometers, and the arrival time of the seismic wave will differ by about 1 second), after the earthquake bureau detects the earthquake, there will often be Dozens of seconds to notify the public. Although it is a short time of tens of seconds, it is possible to save the lives of tens of thousands of people in the face of a major earthquake.

[0003] There are man...

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