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Method for responding to emergency broadcast by means of digital frequency modulation, cable television set-top box and system

An emergency broadcasting and digital frequency modulation technology, which is applied in broadcasting circuit devices, broadcasting specific applications, electrical components, etc., to achieve the effects of avoiding misoperation, low power consumption, and reducing the amount of data processing

Inactive Publication Date: 2021-04-30
合肥飞光妙源信息科技有限公司
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  • 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 responding to emergency broadcasts by digital frequency modulation, a cable TV set-top box and a system, aiming at solving the problem of how a DVB-C set-top box responds to emergency messages and plays emergency broadcasts

Method used

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  • Method for responding to emergency broadcast by means of digital frequency modulation, cable television set-top box and system
  • Method for responding to emergency broadcast by means of digital frequency modulation, cable television set-top box and system
  • Method for responding to emergency broadcast by means of digital frequency modulation, cable television set-top box and system

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Embodiment Construction

[0072] 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.

[0073] Example Figure 1-3 As shown, a method for responding to emergency broadcasting by digital frequency modulation, a cable TV set-top box and a system, wherein,

[0074] In one aspect of this embodiment, a method for responding to an emergency broadcast by digital frequency modulation is provided, including the following steps:

[0075] (1) When the DVB-C set-top box 400 is turned off or in standby or playing programs, the FM-CDR receiving module 1 receives the FM-CDR broadcast signal, demodulates and decodes the FM-CDR data, and then decrypts and analyzes the module 2 by the FM-CDR Decrypt and analyze FM-CDR data to get emergency messages;

[0076] Emergency messages, including emergency instructions...

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Abstract

The invention discloses a method for responding to emergency broadcast by digital frequency modulation, a cable television set-top box and a system, and the method comprises the steps that an FM-CDR receiving module and an FM-CDR decryption analysis module obtain an emergency message from a digital frequency modulation broadcast signal, the emergency message comprises an emergency instruction and emergency information, and the emergency information is a receiving parameter of an emergency broadcast DVB-C program; the DVB-C receiving module obtains a DVB-C program from the DVB-C broadcast television signal; the main control module for receiving the DVB-C program video and audio data receives the emergency message, executes an emergency instruction, and awakens the DVB-C set top box in advance in a necessary time period; and the main control module sets a receiving parameter of the DVB-C receiving module according to the emergency information, converts the emergency broadcast content into a media type and outputs the media type. According to the invention, the emergency message in the digital frequency modulation broadcast signal is detected and received in real time, and the DVB-C 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 means of digital frequency modulation, a cable TV set-top box and a system. Background technique [0002] The cable digital TV DVB-C set-top box receives, demodulates, demultiplexes and decodes DVB-C 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 DVB-C set-top boxes. When the DVB-C 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-C broadcast TV signal, and the DVB-C set-top box receives and separates the emergency message. Th...

Claims

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Application Information

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IPC IPC(8): H04N21/426H04N21/435H04N21/439H04N21/4402H04N21/443H04N21/462H04N21/488H04N21/61H04N21/81H04H20/59H04H20/46
CPCH04H20/46H04H20/59H04N21/42607H04N21/435H04N21/4355H04N21/4398H04N21/440218H04N21/4432H04N21/4436H04N21/4622H04N21/4882H04N21/6112H04N21/6143H04N21/814
Inventor 李晓飞
Owner 合肥飞光妙源信息科技有限公司
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