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Method for awakening emergency broadcast through subcarrier, satellite television set top box and system

An emergency broadcasting and subcarrier technology, applied in the field of satellite TV set-top boxes and systems

Inactive Publication Date: 2021-04-30
李柔漪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for waking up an emergency broadcast via a subcarrier, a satellite TV set-top box and a system, aiming at solving the problem of how a DVB-S set-top box responds to an emergency message and plays an emergency broadcast

Method used

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  • Method for awakening emergency broadcast through subcarrier, satellite television set top box and system
  • Method for awakening emergency broadcast through subcarrier, satellite television set top box and system
  • Method for awakening emergency broadcast through subcarrier, satellite television set top box and system

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Embodiment Construction

[0079] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0080] Example Figure 1-3 As shown, the method, satellite TV set-top box and system for waking up emergency broadcast via subcarrier, wherein,

[0081] In one aspect of this embodiment, a method for waking up an emergency broadcast via a subcarrier is provided, including the following steps:

[0082] (1) When the DVB-S set-top box 400 is turned off or in standby or playing a program, the FM subcarrier receiving module 1 receives the FM subcarrier broadcast signal, demodulates and decodes the FM subcarrier data, and then decrypts and analyzes the FM subcarrier module 2 Decrypt and analyze FM subcarrier data to obtain emergency messages;

[0083] FM subcarrier broadcasting is one of FM-SCA broadcasting, FM-...

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Abstract

The invention discloses a method for awakening emergency broadcast through subcarriers, a satellite television set top box and a system, and the method comprises the steps that a frequency modulation subcarrier receiving module and a frequency modulation subcarrier decryption and analysis module obtain an emergency message from a frequency modulation subcarrier broadcast signal, and the emergency message comprises an emergency instruction and emergency information, wherein the emergency information is a receiving parameter of an emergency broadcast DVB-S program; the DVB-S receiving module obtains a DVB-S program from the DVB-S broadcast television signal; the first control module receives the emergency message, executes an emergency instruction, awakens the DVB-S set top box in advance in a necessary time period, and transmits the emergency message to the main control module for receiving program video and audio data; and the main control module sets receiving parameters of the second DVB-S receiving module according to the emergency information, converts the emergency broadcast content into media types, synthesizes the media types and outputs the media types. According to the invention, the emergency message in the frequency modulation subcarrier broadcast signal is detected and received in real time, and the DVB-S set top box is awakened to carry out emergency broadcast.

Description

technical field [0001] The invention belongs to the technical field of emergency broadcasting, and in particular relates to a method for waking up emergency broadcasting via a subcarrier, a satellite TV set-top box and a system. Background technique [0002] The satellite digital TV DVB-S set-top box receives, demodulates, demultiplexes and decodes DVB-S radio and television signals to obtain radio and television program data, and outputs them to the TV for playback. When natural disasters or social public events occur, the emergency broadcast management platform sends emergency messages to DVB-S set-top boxes. When the DVB-S set-top box is turned off, standby or playing programs, there is a problem of how to respond to emergency messages and play emergency broadcasts. [0003] The existing emergency broadcast system inserts the emergency message into the DVB-S broadcast TV signal, and the DVB-S set-top box receives and separates the emergency message. The disadvantage is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/426H04N21/435H04N21/439H04N21/4402H04N21/443H04N21/462H04N21/488H04N21/61H04N21/81H04H20/59H04H20/51H04H20/34
CPCH04H20/34H04H20/51H04H20/59H04N21/42607H04N21/435H04N21/4355H04N21/4398H04N21/440218H04N21/4432H04N21/4436H04N21/4622H04N21/4882H04N21/6112H04N21/6143H04N21/814
Inventor 李柔漪
Owner 李柔漪
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