A method for receiving DMB early warning information by a synchronous LED screen

Abstract

The invention belongs to the technical field of digital multimedia broadcasting, and discloses a method for receiving and displaying early warning information transmitted through a digital multimediabroadcasting system by using an existing public synchronous LED screen. The LED screen is driven by an LED driving board, and the driving board is connected with a computer through a high-speed network cable; a DMB receiver of the USB interface is inserted into the computer, and LED driving software and DMB receiving software are installed on the computer; the DMB receiving software receives the early warning information through the DMB receiver and displays the early warning information on a computer monitor screen in a covering manner; and the LED driving software continuously captures the whole or part of the monitor screen and then synchronously transmits the data to the LED driving board, thereby realizing the display of DMB early warning information on the LED screen. Under the condition that normal functions of the LED screens are not affected, the LED screens can forcibly display early warning information through the digital broadcasting system in emergency, and the coverage effect of the early warning information can be remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of digital multimedia broadcasting, and in particular relates to a method for synchronous LED screens to receive DMB early warning information. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] my country has a vast territory, complex geography and climate conditions, and is one of the countries in the world that suffers most from natural disasters. How to carry out effective early warning of disaster information to ensure the safety of people's lives and properties to the greatest extent is a major issue of science and technology and people's livelihood that modern society has always paid attention to. Today, most disasters can be predicted more accurately through scientific and technological means, and the main ways to disseminate such information are mobile communications, the Internet, television, radio, newspapers, and telephones....

AI Technical Summary

Problems solved by technology

[0008] (1) Using the Internet and mobile communications to issue real-time warning information to a large number of users is prone to information loss and network congestion;

[0009] (2) The existing DAB or DMB early warning terminals are mainly dedicated terminals based on audio and text, mainly used for receiving early warning information in remote areas, and the audience is limited;

[0010] (3) The existing synchronous LED screens currently do not support the reception of DMB early warning information, because there is a lack of DMB receivers and control software that match the LED driver card;

[0012] The technical difficulty is that the addition of the DMB receiver must not affect the hardware connection of the existing synchronous LED screen to reduce the cost of system transformation; at the same time, it must not affect the normal commercial use of the LED screen; the early warning information should only be used when encountering natural disasters or emergencies Overlay display on the LED screen

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