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Method for achieving frequency modulation emergency broadcast based on RDS

A technology of emergency broadcast and implementation method, applied in the field of RDS (Radio Data System), can solve problems such as affecting users to receive emergency broadcast messages, and achieve the effect of strong signal anti-interference ability and saving frequency resources.

Active Publication Date: 2013-11-13
ACAD OF BROADCASTING SCI SARFT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing FM emergency broadcast technology needs to be improved and perfected in terms of signal anti-interference ability, coverage, transmission performance, etc., which affects the timely and effective reception of emergency broadcast messages by users

Method used

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  • Method for achieving frequency modulation emergency broadcast based on RDS
  • Method for achieving frequency modulation emergency broadcast based on RDS
  • Method for achieving frequency modulation emergency broadcast based on RDS

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Embodiment Construction

[0052] In order to further explain the technical means and functions adopted by the present invention to achieve the intended purpose, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0053] The method for realizing the FM emergency broadcast based on RDS of the present invention, such as figure 1 shown, including the following specific steps:

[0054] In step S101, the transmitting station periodically sends data packets composed of basic tuning and switching information frames, emergency broadcast data frames and broadcast text frames.

[0055] Specifically, the basic tuning and switching information frame, the emergency broadcast data frame and the broadcast text frame respectively include four blocks, and each block is determined by a check word and a unique offset word.

[0056] In the non-emergency broadcast state, the transmission ratio of the basic tuning and s...

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Abstract

The invention discloses a method for achieving frequency modulation emergency broadcast based on RDS. The method comprises the following steps that firstly, basic tuning and switching information frames, emergency broadcast data frames and broadcast text frames are combined into a data package to be sent out at regular intervals through the emitting station; secondly, when a receiving terminal receives the data package sent by the emitting station, whether the emitting station supports emergency broadcast and plays the emergency broadcast or not is recognized according to the basic tuning and switching information frames, if the emitting station supports the emergency broadcast and plays the emergency broadcast, the third step is carried out, and otherwise, the next data package is waited to be received and processed; thirdly, when the receiving terminal judges that the receiving terminal is a matched receiving terminal according to the emergency data frames, the emergency broadcast is received and played. The frequency modulation emergency broadcast data information is transmitted based on the RDS technology, the frequency resources are saved, the anti-interference ability of the signal is strong, and users can receive the emergency broadcast information in time.

Description

technical field [0001] The present invention relates to the technical field of RDS (Radio Data System, radio data system), and in particular to an RDS-based method for implementing frequency modulation emergency broadcasting. Background technique [0002] The Radio Data System (RDS) is a system that transmits business information such as text and data to the public through the FM subcarrier by using the vacant frequency spectrum of the FM baseband while performing FM broadcasting. It has the characteristics of low investment and spectrum saving. [0003] When emergencies such as natural disasters, accidental disasters, public health and social security occur, they cause or may cause heavy casualties, property losses, ecological environment damage and serious social hazards, endangering public safety. [0004] The existing FM emergency broadcast technology needs to be improved and perfected in terms of signal anti-interference ability, coverage, transmission performance, etc....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04H20/59H04H60/23
Inventor 施玉海蔡超时冯海亮杨霏王丰
Owner ACAD OF BROADCASTING SCI SARFT
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