Method for responding to emergency broadcast through 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 achieve the effects of low power consumption, reduced data processing, and avoidance of misoperations

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

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Problems solved by technology

[0006] The object of the present invention is to provide the method, DTMB set-top box and system by digital FM response emergency broadcast, aim to solve the problem how DTMB set-top box responds emergency news and broadcast emergency broadcast

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  • Method for responding to emergency broadcast through digital frequency modulation, DTMB set top box and system
  • Method for responding to emergency broadcast through digital frequency modulation, DTMB set top box and system
  • Method for responding to emergency broadcast through digital frequency modulation, DTMB set top box and system

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Embodiment Construction

[0083] 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.

[0084] Example Figure 1-3 As shown, the method, DTMB set-top box and system for responding to emergency broadcast by digital frequency modulation, wherein,

[0085] In one aspect of this embodiment, a method for responding to an emergency broadcast by digital frequency modulation is provided, including the following steps:

[0086] (1) When the DTMB set-top box 400 is turned off or in standby or playing a program, the FM-CDR receiving module 1 receives the FM-CDR broadcast signal, demodulates and decodes the FM-CDR data, and then the FM-CDR decryption and analysis module 2 decrypts, Analyze FM-CDR data to get emergency messages;

[0087] Emergency messages, including emergency instructions and emergency i...

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Abstract

The invention discloses a method for responding to emergency broadcast through 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, wherein 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 main control module receives the emergency message, executes an emergency instruction, and awakens the DTMB set top box in a necessary time period in advance; and the main control module converts the media type of the emergency broadcast content, 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 invention belongs to the technical field of emergency broadcasting, and in particular relates to a method for responding to emergency broadcasting by digital frequency modulation, 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 decodi...

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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