Method for responding to emergency broadcast through subcarrier, IPTV set top box and system

A technology of emergency broadcasting and subcarrier, which is applied in broadcasting circuit devices, broadcasting specific applications, electrical components, etc., to achieve the effects of low power consumption, avoidance of misoperation, and high power consumption

Inactive Publication Date: 2021-06-11
张玥桐
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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, an IPTV set-top box and a system for responding to emergency broadcasts via a subcarrier, aiming to solve the problem of how the IPTV set-top box responds to emergency messages and plays emergency broadcasts

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  • Method for responding to emergency broadcast through subcarrier, IPTV set top box and system
  • Method for responding to emergency broadcast through subcarrier, IPTV set top box and system
  • Method for responding to emergency broadcast through subcarrier, IPTV set top box and system

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Embodiment Construction

[0082] 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.

[0083] Example Figure 1-3 As shown, the method, IPTV set-top box and system for responding to emergency broadcast via subcarrier, wherein,

[0084] In one aspect of this embodiment, a method for responding to an emergency broadcast via a subcarrier is provided, including the following steps:

[0085] (1) When the IPTV set-top box 400 is turned off or on standby or playing a program, the FM subcarrier receiving module 1 receives the FM subcarrier broadcast signal, demodulates and decodes the FM subcarrier data, which is then decrypted by the FM subcarrier decryption analysis module 2, Analyze the FM subcarrier data to get emergency messages;

[0086] FM subcarrier broadcasting is one of FM-SCA broadcasting...

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Abstract

The invention discloses a method for responding to emergency broadcast through subcarriers, an IPTV set top box and a system, and the method comprises the following steps: a frequency modulation subcarrier receiving module and a frequency modulation subcarrier decryption analysis module obtain an emergency message from a frequency modulation subcarrier broadcast signal, wherein the emergency message comprises an emergency instruction and emergency information, and the emergency information is a receiving parameter of an emergency broadcast IPTV program; an IPTV receiving module obtains an IPTV program from the IPTV broadcast television signal; a main control module for receiving the IPTV program video and audio data receives the emergency message, executes an emergency instruction and awakens the IPTV set top box in a necessary time period in advance; and the main control module sets a receiving parameter of the second IPTV receiving module according to the emergency information, converts the emergency broadcast content into a media type, synthesizes the emergency broadcast content and outputs the emergency broadcast content. According to the invention, the emergency message in the frequency modulation subcarrier broadcast signal is detected and received in real time, and the IPTV 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 responding to emergency broadcasting via a subcarrier, an IPTV set-top box and a system. Background technique [0002] The interactive Internet TV IPTV set-top box receives, demodulates, demultiplexes and decodes the IPTV radio and television signals, obtains 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 IPTV set-top boxes. When the IPTV 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 emergency messages into IPTV radio and television signals, and the IPTV set-top box receives and separates the emergency messages. The disadvantage is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/462H04N21/435H04N21/443H04N21/426H04H20/48H04H20/59
CPCH04H20/48H04H20/59H04N21/426H04N21/435H04N21/4436H04N21/4622
Inventor 张玥桐
Owner 张玥桐
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