Method for waking up emergency broadcast by digital frequency modulation, cable television set top box and system

A technology of emergency broadcasting and digital FM, applied in broadcasting circuit devices, broadcasting specific applications, electrical components, etc., to avoid misoperation, low power consumption, and high power consumption
CN112738602AInactive Publication Date: 2021-04-30合肥飞光妙源信息科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
合肥飞光妙源信息科技有限公司
Publication Date
2021-04-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for waking up emergency broadcast by digital frequency modulation, a cable television set top box and a system, the method is as follows: an FM-CDR receiving module and an FM-CDR decryption analysis module obtain emergency messages from an FM-CDR broadcast signal, the emergency messages comprise emergency instructions 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 first control module receives the emergency message, executes an emergency instruction, awakens the DVB-C set top box in advance in a necessary time period, and transmits the emergency message to the main control module for receiving program video and audio data; 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 FM-CDR broadcast signal is detected and received in real time, and the DVB-C set top box is awakened to carry out emergency broadcast.
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Description

technical field

[0001] The invention belongs to the technical field of emergency broadcasting, and particularly relates to a method, a cable TV set-top box and a system for waking up emergency broadcasting by digital frequency modulation. Background technique

[0002] The cable digital TV DVB-C set-top box receives, demodulates, demultiplexes, and decodes the DVB-C radio and television signal, obtains the radio and television program data, and outputs it to the TV for playback. In the event of natural disasters or social public events, the emergency broadcast management platform sends emergency messages to the DVB-C set-top box. When a DVB-C set-top box is turned off, on standby or playing a program, there is a problem of how to respond to emergency messages and play emergency broadcasts.

[0003] In the existing emergency broadcast system, the emergency message is inserted into the DVB-C radio and television signal, and the DVB-C set-top box receives and separates the emer...

Claims

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