CN216982104U

CN216982104U - Code division multiplexing power amplifier and public broadcasting system

Info

Publication number: CN216982104U
Application number: CN202120999180.4U
Authority: CN
Inventors: 杨险峰; 李炜
Original assignee: Tianjin Haida Electronics Co ltd
Current assignee: Tianjin Haida Electronics Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2022-07-15
Anticipated expiration: 2031-05-11

Abstract

The utility model relates to the technical field of broadcasting equipment, in particular to a code division multiplexing power amplifier and a public broadcasting system, which comprise an Ethernet signal decoding module, a first data output port and a second data output port, wherein the Ethernet signal decoding module is provided with an Ethernet interface and the first data output port; the code division multiplexing coding module is provided with a first data input port and a second data output port, and the first data input port is connected with the first data output port; the code division multiplexing decoding module is provided with a second data input port and a third signal output port, and the second data input port is connected with the second data output port; the power amplifier module is provided with a third signal input port and an audio output port, the third signal input port is connected with the third signal output port, and the audio output port is connected with the loudspeaker. The utility model carries out point-to-surface transmission through high-speed serial communication, realizes synchronous data receiving and avoids network delay among devices.

Description

Code division multiplexing power amplifier and public broadcasting system

Technical Field

The utility model relates to the technical field of broadcasting equipment, in particular to a code division multiplexing power amplifier and a public broadcasting system.

Background

In traditional public address system, because the network is point-to-point transmission, the signal is single to adopt the matrix type to connect often between the different terminals, consequently the sound that leads to the speaker broadcast of the different power amplifiers in same region has the aliasing, even adopt the mode effect of UDP broadcast also not fully satisfactory, thereby leads to user experience poor.

SUMMERY OF THE UTILITY MODEL

The utility model provides a code division multiplexing power amplifier and a public broadcasting system, which carry out point-to-surface transmission through high-speed serial communication, realize synchronous data receiving and avoid network delay among devices.

In order to achieve the purpose, the utility model provides the following technical scheme: a code division multiplexing power amplifier comprises an integrated machine, wherein the integrated machine is internally provided with: the Ethernet signal decoding module is provided with an Ethernet interface and a first data output port; the code division multiplexing coding module is provided with a first data input port and a second data output port, and the first data input port is connected with the first data output port; the code division multiplexing decoding module is provided with a second data input port and a third signal output port, and the second data input port is connected with the second data output port; the power amplifier module is provided with a third signal input port and an audio output port, the third signal input port is connected with the third signal output port, and the audio output port is connected with the loudspeaker.

Preferably, the second data output port communicates with the second data input port via a high speed serial bus.

Preferably, the all-in-one machine further comprises a mode control module, the mode control module is respectively communicated with the code division multiplexing coding module and the code division multiplexing decoding module, and the mode control module is provided with a signal synchronization interface, and the signal synchronization interface is connected with the high-speed serial bus.

Preferably, in the public broadcasting system, a plurality of the code division multiplexing power amplifiers are used to form a host, wherein each host is connected to an ethernet through the ethernet interface, and the signal synchronization interface of each host is connected to the high-speed serial bus.

Preferably, a public address system includes a master and a plurality of slaves, both of the master and the slaves use the cdma power amplifier, the master is connected to the ethernet through the ethernet interface, and the slaves and the master are connected to the high-speed serial bus through the signal synchronization interface.

Preferably, the master and the slave are respectively set by the mode control module.

The utility model has the beneficial effects that: when a plurality of code division multiplexing power amplifiers are used as a host to form a host-based public broadcasting system, an Ethernet signal decoding module extracts streaming media and control signals transmitted by Ethernet, code division multiplexing coding is carried out on the decoded multi-path streaming media through a code division multiplexing coding module, the coded signals are sent to a high-speed serial bus, the code division multiplexing decoding module decodes the signals on the high-speed serial bus according to the control signals, corresponding signals are extracted and are pushed to a power amplification module to be amplified at the last stage, and the amplified signals are played by a loudspeaker.

A public broadcasting system based on a master-slave structure can be built by a host and a plurality of slave units, wherein the slave units only extract control signals on the Ethernet, decode signals of a high-speed serial bus, extract signals which are selected by the slave units, and push the signals to a power amplification module for final amplification, and the amplified signals are played by a loudspeaker. In the operation process of the system, when the master fails, the slave can take over the function of the master and convert the master into a new master for use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the connection structure of the modules inside the all-in-one machine of the present invention;

FIG. 2 is a schematic diagram of the connection mode of the public broadcasting system based on host according to the present invention;

fig. 3 is a schematic diagram of a connection mode of a public address system based on a master-slave structure according to the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, a code division multiplexing power amplifier includes an all-in-one machine, in which: the Ethernet signal decoding module 1 is provided with an Ethernet interface 2 and a first data output port 3; the code division multiplexing coding module 4 is provided with a first data input port 5 and a second data output port 6, and the first data input port 5 is connected with the first data output port 3; the code division multiplexing decoding module 7 is provided with a second data input port 8 and a third signal output port 9, and the second data input port 8 is connected with the second data output port 6; the power amplifier module 10 is provided with a third signal input port 11 and an audio output port 12, the third signal input port 11 is connected with the third signal output port 9, and the audio output port 12 is connected with a loudspeaker 13. The second data output port 6 communicates with the second data input port 8 via a high speed serial bus 14. The all-in-one machine further comprises a mode control module 15, the mode control module 15 is respectively communicated with the code division multiplexing coding module 4 and the code division multiplexing decoding module 7, the mode control module 15 is provided with a signal synchronization interface 16, and the signal synchronization interface 16 is connected with the high-speed serial bus 14. In the practical application process, a plurality of code division multiplexing power amplifiers are used as the hosts 17 to form a public broadcasting system based on the hosts 17, wherein each host 17 is connected with the ethernet through the ethernet interface 2, and the signal synchronization interface 16 of each host 17 is connected with the high-speed serial bus 14.

In the above arrangement, the ethernet signal decoding module 1 extracts the streaming media and the control signal transmitted by the ethernet, and performs code division multiplexing encoding on the decoded multiple paths of streaming media through the code division multiplexing encoding module 4, the encoded signal is sent to the high-speed serial bus 14, the code division multiplexing decoding module 7 decodes the signal on the high-speed serial bus 14 according to the control signal, extracts the corresponding signal, and pushes the signal to the power amplification module 10 for final stage amplification, and the amplified signal is played by the speaker 13.

Example two:

as shown in fig. 3, a master 17 and a plurality of slaves 18 may also be configured to form a public address system based on a master-slave structure, where the master 17 and the slaves 18 both use the cdma power amplifier, the master 17 is connected to the ethernet through the ethernet interface 2, and the slaves 18 and the master 17 are connected to the high-speed serial bus 14 through the signal synchronization interface 16. The master 17 and the slave 18 are set by the mode control module 15, respectively.

In the above arrangement, the slave 18 only extracts the control signal on the ethernet, decodes the signal of the high-speed serial bus 14, extracts the signal that the slave should select, and pushes the signal to the power amplification module 10 for final amplification, and the amplified signal is played by the speaker 13. In the operation process of the system, when the master 17 fails, the slave 18 can take over the function of the master 17 and convert the function into a new master 17 for use.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A code division multiplexing power amplifier is characterized by comprising an integrated machine, wherein the integrated machine is internally provided with:

the Ethernet signal decoding module is provided with an Ethernet interface and a first data output port;

the code division multiplexing coding module is provided with a first data input port and a second data output port, and the first data input port is connected with the first data output port;

the code division multiplexing decoding module is provided with a second data input port and a third signal output port, and the second data input port is connected with the second data output port;

the power amplifier module is provided with a third signal input port and an audio output port, the third signal input port is connected with the third signal output port, and the audio output port is connected with the loudspeaker.

2. The code division multiplexed power amplifier of claim 1 wherein: the second data output port communicates with the second data input port via a high speed serial bus.

3. The code division multiplexed power amplifier of claim 2 wherein: the all-in-one machine also comprises a mode control module, wherein the mode control module is respectively communicated with the code division multiplexing coding module and the code division multiplexing decoding module, and is provided with a signal synchronous interface which is connected with the high-speed serial bus.

4. A public address system comprising the code division multiplexing power amplifier of claim 3, characterized in that: and a plurality of code division multiplexing power amplifiers are adopted to form a host, each host is respectively connected with the Ethernet through the Ethernet interface, and the signal synchronous interface of each host is respectively connected with the high-speed serial bus.

5. A public address system comprising the code division multiplexing power amplifier of claim 3, characterized in that: the system comprises a host and a plurality of slaves, wherein the host and the slaves are realized by the code division multiplexing power amplifier, the host is connected with the Ethernet through the Ethernet interface, and the slaves and the host are respectively connected with the high-speed serial bus through the signal synchronous interfaces.

6. A public address system according to claim 5, wherein: and the host and the slave are respectively set by adopting the mode control module.