Method for waking up emergency broadcast by subcarrier, DTMB set top box and system

An emergency broadcasting and sub-carrier technology, which is applied in broadcasting circuit devices, broadcasting specific applications, electrical components, etc., to avoid misoperation, reduce data processing volume, and process small amounts of data

Inactive Publication Date: 2021-05-11
六安富华智能信息科技有限公司
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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 the method for waking up emergency broadcast by sub-carrier, DTMB set-top box and system, aim to solve the problem of how DTMB set-top box responds emergency news and plays emergency broadcast

Method used

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  • Method for waking up emergency broadcast by subcarrier, DTMB set top box and system
  • Method for waking up emergency broadcast by subcarrier, DTMB set top box and system
  • Method for waking up emergency broadcast by subcarrier, DTMB set top box and system

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Embodiment Construction

[0085] 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.

[0086] Example Figure 1-3 As shown, the method, DTMB set-top box and system for waking up emergency broadcast by subcarrier, wherein,

[0087] In one aspect of this embodiment, the method for waking up an emergency broadcast by a subcarrier includes the following steps:

[0088] (1) When the DTMB 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 it by the FM subcarrier decryption analysis module 2, Analyze the FM subcarrier data to get emergency messages;

[0089] FM subcarrier broadcasting is one of FM-SCA broadcasting, FM-RDS broadcasting, FM...

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Abstract

The invention discloses a method for waking up emergency broadcast by subcarriers, a DTMB 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, the emergency message comprises an emergency instruction and emergency information, and the emergency information is emergency broadcast content; the DTMB receiving module obtains a DTMB program from the DTMB broadcast television signal; the first control module receives the emergency message, executes an emergency instruction, and awakens the DTMB set top box in advance for a necessary time period; and the first control module converts the emergency broadcast content into a media type, synthesizes 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 DTMB set top box is awakened to carry out the 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 by subcarriers, a DTMB set-top box and a system. Background technique [0002] The terrestrial digital TV DTMB set-top box receives, demodulates, demultiplexes and decodes the DTMB broadcast TV signal to obtain broadcast TV program data, and outputs it to the TV for playback. When a natural disaster or social public event occurs, the emergency broadcast management platform sends an emergency message to the DTMB set-top box. When the DTMB 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 DTMB broadcast TV signal, and the DTMB set-top box receives and separates the emergency message. Demodulation and decoding require high-frequ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/426H04N21/435H04N21/439H04N21/4402H04N21/443H04N21/462H04N21/488H04N21/81H04H20/59H04H20/46
CPCH04H20/46H04H20/59H04N21/42607H04N21/435H04N21/4355H04N21/4398H04N21/440218H04N21/4432H04N21/4436H04N21/4622H04N21/4882H04N21/814
Inventor 张瑞勋
Owner 六安富华智能信息科技有限公司
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