Digital public broadcasting system based on IP network

Abstract

The invention discloses a digital public broadcasting system based on an IP network, comprising at least two audio play terminals, a switch, a digital audio terminal, a power amplifier and a sound box. The audio play terminals are used for playing audio data, coding an audio control signal and a played audio signal and then sending the signals to the digital audio terminal by the switch; the digital audio terminal is used for receiving the audio control signal and the audio signal transmitted by the switch, and then converting the audio control signal and the audio signal to analog signals to be sent to the power amplifier; and the power amplifier is used for amplifying the amplitude of the analog signals to drive the sound box to play voice. The invention is based on the existing Ethernet network, utilizes the existing network to transmit the control signal and the audio signal, not only solves the problems of construction, long distance transmission, audio effect, and the like, and has greater advantages in the aspects of system upgrade and stability. The invention is the network broadcasting service system based on all digital network type, and can be used for inputting voice signals into a broadcasting system in different locations so as to enhance the flexibility of the broadcasting system.

Description

【Technical field】 [0001] The present invention relates to a digital broadcasting system, in particular to a digital public broadcasting system based on an IP network. 【Background technique】 [0002] Broadcasting can be divided into radio broadcasting and public broadcasting. Public broadcasting is widely used in venues, gymnasiums, shopping malls, communities, schools and other places. Public broadcasting provides people with news information, background music, etc. in normal times, and provides a command platform to command evacuation personnel in case of emergency. Public broadcasting is closely related to our life and is an indispensable electronic system in daily life. [0003] Public broadcasting can be divided into traditional analog type, digital control type, all-digital private network type and all-digital network type. The traditional analog and digital control types have construction inconvenience, long-distance transmission problems, power distribution problems...

AI Technical Summary

Problems solved by technology

[0004] However, in the existing IP-based network audio transmission technology, there is generally only one network audio server. If the data of the server needs to be broadcast, it must first be connected to the only network audio server for forwarding. When the network audio server When a problem occurs, the entire system cannot work well, which undoubtedly brings great inconvenience to people's use

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