Method for awakening emergency broadcast by digital frequency modulation, DTMB set top box and system

A technology for emergency broadcasting and digital FM, which is applied in specific broadcasting applications, electrical components, selective content distribution, etc. to avoid misoperation, reduce data processing, and consume large amounts of power.

Pending Publication Date: 2021-06-01
南京双晨信息科技有限公司
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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 a method for waking up emergency broadcast by digital frequency modulation, a DTMB set-top box and a system, aiming at solving the problem of how the DTMB set-top box responds to emergency messages and plays emergency broadcasts

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  • Method for awakening emergency broadcast by digital frequency modulation, DTMB set top box and system
  • Method for awakening emergency broadcast by digital frequency modulation, DTMB set top box and system
  • Method for awakening emergency broadcast by digital frequency modulation, DTMB set top box and system

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Embodiment Construction

[0081]In order to make the objects, technical solutions, and advantages of the present invention, the technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0082]ImplementationFigure 1-3The method, DTMB set top box and system, the DTMB set top box and system, by digital frequency modulation.

[0083]On the one hand of this embodiment, a method of waking up emergency broadcast by digital frequency modulation is provided, including the following steps:

[0084](1) When the DTMB set-top box 400 is turned off or standby or play the program, the FM-CDR receiving module 1 receives the FM-CDR broadcast signal, decompiled, decoded the FM-CDR data, and then decrypt the parsing module 2 decrypted, Analysis of FM-CDR data to obtain emergency news;

[0085]Emergency news, including emergency instructions and emergency information;

[0086]Emergency information is the emergency broadcast content;

[0087](2) When the DTMB...

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Abstract

The invention discloses a method for waking up emergency broadcast by digital frequency modulation, a DTMB set top box and a system, and the method comprises the following steps: an FM-CDR receiving module and an FM-CDR decryption analysis module obtain an emergency message from an FM-CDR 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, wakes up the DTMB set top box in advance for a necessary time period, and transmits the emergency message to the main control module which receives program video and audio data; and the main control module converts the media type of the emergency broadcast content, and synthesizes and outputs the emergency broadcast content. According to the invention, the emergency message in the FM-CDR broadcast signal is detected and received in real time, and the DTMB set top box is awakened to carry out emergency broadcast.

Description

Technical field[0001]The present invention belongs to the field of emergency broadcast technology, and specific to the method, DTMB set-top box and system that relies on digital frequency modulation.Background technique[0002]Ground Digital TV DTMB set-top box receives, demodulates, demodulates, decodes, demodulates, demodulates, decodes, to obtain radio television program data, and outputs playback. When a natural disaster or social public event occurs, the emergency broadcast management platform sends emergency news to the DTMB set-top box. The DTMB set-top box exists when there is a problem that responds to emergency news and play emergency broadcasts when shutdown, standby or play.[0003]The existing emergency broadcast system, inserts the emergency news into the DTMB broadcast TV signal, received by the DTMB set-top box and separated emergency news, the disadvantage is that the DTMB receiving module and the master module 7 * 24 of the DTMB set-top box are run, due to the DTMB sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/488H04N21/426H04N21/438H04N21/4385H04N21/435H04N21/443H04N21/4402H04H20/59
CPCH04H20/59H04N21/426H04N21/4353H04N21/4382H04N21/43853H04N21/440236H04N21/4432H04N21/4436H04N21/4882
Inventor 谢涛
Owner 南京双晨信息科技有限公司
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