WO2017000146A1

WO2017000146A1 - Data transmission apparatus, router, and data transmission method

Info

Publication number: WO2017000146A1
Application number: PCT/CN2015/082730
Authority: WO
Inventors: 杨新宇; 纪宏洲
Original assignee: 深圳走天下科技有限公司
Priority date: 2015-06-30
Filing date: 2015-06-30
Publication date: 2017-01-05

Abstract

Disclosed is a data transmission apparatus. The data transmission apparatus comprises: an acquiring module, used for acquiring audio data; a coding module, used for coding and compressing the acquired audio data; a protocol encapsulation module, used for performing protocol encapsulation on the coded audio data; and a broadcast module, used for broadcasting the encapsulated audio data to a local area network. The present invention also provides a router, a data transmission method, and a data reception apparatus and method.

Description

Data transmission device, router and data transmission method

Technical field

The present invention relates to the field of communications technologies, and in particular, to a data transmission device, a router, and a data transmission method.

Background technique

In existing terminal devices, such as mobile phones, tablets, etc., when transmitting audio data, it is usually through the built-in I2S audio bus (InterIC Sound Bus, which is developed by Philips for audio data transmission between digital audio devices). A bus standard) After obtaining PCM (Pulse Code Modulation) audio data, it is encoded and compressed into a FIFO (register), and then sent through UDP (User Datagram Protocol), and routed through the relay to make the connection The terminal device on this route can receive the audio data. That is to say, in the prior art, audio data can only be transmitted through devices connected in the local area network, and audio data cannot be directly transmitted on the route.

Summary of the invention

In order to solve the above problems, the present invention provides a data transmission apparatus, a router, and a data transmission method.

An embodiment of the present invention provides a data transmission apparatus, including: an acquisition module, configured to acquire audio data, an encoding module, configured to encode and compress the acquired audio data, and a protocol encapsulation module, configured to encode the audio data. Performing protocol encapsulation; and a broadcast module for broadcasting the encapsulated audio data to the local area network.

Another embodiment of the present invention provides a router including at least the above audio data transmission apparatus.

Another embodiment of the present invention provides a data transmission method, including: acquiring audio data; storing the acquired audio data; encoding and compressing the obtained audio data; performing protocol encapsulation on the encoded audio data; The audio data is broadcast to the LAN.

Another embodiment of the present invention provides a data receiving apparatus, including: a receiving module, configured to receive audio data broadcasted by a router; and an analyzing module, configured to analyze a frame loss condition of the audio data; a decoding module, configured to unpack and decode the audio data, and a playing module, configured to play the decoded audio data.

A further embodiment of the present invention provides a data receiving method, including: receiving audio data broadcast by a router; analyzing a frame loss condition of the audio data; unpacking and decoding the audio data; and playing the decoded audio data .

The present invention can obtain audio data through an audio data acquisition interface, and then, after encoding and compressing and encapsulating the audio data, directly transmitting to the receiving terminal without processing the audio data through the transmitting terminal, and then via the network server. Forward to the receiving terminal, convenient and fast.

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 embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

FIG. 1 is a schematic diagram of a router and a working environment thereof according to an embodiment of the present invention;

2 is a functional block diagram of an audio data transmission apparatus according to an embodiment of the present invention;

FIG. 3 is a functional block diagram of an audio data receiving apparatus according to an embodiment of the present invention;

FIG. 4 is a flowchart of an audio data transmission method and an audio data receiving method according to an embodiment of the present invention.

detailed description

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings and specific embodiments. It is apparent that the described embodiments are only a part of the embodiments of the invention, and not all of them. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of the present invention.

As shown in FIG. 1, an embodiment of the present invention provides a router 100 capable of connecting to a plurality of communication terminals via a local area network to form a communication system capable of transmitting signals. In this embodiment, the communication terminal may be any device with a WIFI connection function, such as a mobile phone, a tablet computer, or the like. More specifically, in this embodiment, the communication system includes one router 100 and four smart phones. It can be understood that in other embodiments, the smartphone can be any number.

Referring to FIG. 2, specifically, the router 100 includes a CPU, a memory, a memory chip for storing a software system, and the like (not shown), and further includes an audio data transmission device 10. In this embodiment, the router 100 includes a path for audio data input, such as an I2S audio input bus, a path for reading an audio file from a memory chip, and the like. In addition, the router 100 also has a WIFI wireless routing function.

More specifically, the audio data transmission device 10 includes an acquisition module 11, a first storage module 12, an encoding module 13, a protocol encapsulation module 14, and a broadcast module 15.

The obtaining module 11 is configured to acquire audio data. In this embodiment, the acquiring module 11 is an I2S interface, which is connected to the I2S audio input bus, the audio data is pulse code modulation (PCM) data, and the obtaining module 11 obtains the PCM through the I2S interface. data. In other embodiments, the acquisition module 11 may also obtain the audio data from other files in which audio data is stored.

The encoding module 13 is configured to perform encoding compression on the acquired audio data. In this embodiment, the audio data transmission device 10 further includes a first storage module 12, and the first storage module 12 is configured to store the acquired audio data. In this embodiment, the first storage module 12 is a first in first out queue (FIFO) that stores pulse code modulation (PCM) data. The encoding module 13 reads out the audio data stored in the PCM FIFO and performs audio encoding compression. In this embodiment, the audio data is encoded and compressed using an opus encoder.

The protocol encapsulation module 14 is configured to perform protocol encapsulation on the encoded audio data. In this embodiment, the protocol encapsulating module 14 takes out the encoded data frame and performs UDP protocol encapsulation. It will be appreciated that in other embodiments, the protocol may also be any other protocol suitable for use.

The broadcast module 15 is configured to broadcast the encapsulated audio data to a local area network.

In another embodiment, the audio data transmission device 10 further includes a second storage module 16 coupled between the encoding module 13 and the protocol encapsulation module 14 for storing encoded compressed audio data.

It can be understood that the first storage module 12 and the second storage module 16 can be integrated in the storage chip of the router 100.

Referring to FIG. 3, the present invention further provides an audio data receiving apparatus 20 for receiving audio data transmitted by the router 100, and processing and playing. In this embodiment, the audio data receiving device 20 is disposed in the communication terminal. The audio data receiving device 20 includes a receiving module 21, an analyzing module 22, a decoding module 23, and a playing module 24.

The receiving module 21 is configured to receive audio data broadcasted by the router 100. In this embodiment, The broadcast transmitted by the router 100 is received through the UDP protocol, and the broadcast includes the audio data.

The analyzing module 22 is configured to analyze a frame loss situation of the audio data during a broadcast process.

The decoding module 23 is configured to unpack and decode the audio data. In this embodiment, according to the UDP encapsulation protocol, the data in the FIFO is unpacked, and then the audio data is decoded.

The playing module 24 is configured to play the decoded audio data. In this embodiment, after the playing module 24 obtains the decoded audio data, the audio playing interface is called to play the audio data.

In another embodiment, the audio data receiving device 20 further includes a storage module for storing the received audio data and providing audio data to the analysis module 22 according to the read command.

Through the above-mentioned audio data transmission device 10 and the receiving device, the router 100 can obtain the audio PCM data through the acquisition module 11 (I2S interface), and then, after encoding and compressing the protocol and compressing the protocol, directly transmitting the audio data to the receiving terminal. The audio data is not processed by the transmitting terminal, and then forwarded to the receiving terminal via the network server, which is convenient and quick.

Referring to FIG. 4, the present invention further provides an audio data transmission method, where the method includes the following steps:

In step S401, audio data is acquired. In this embodiment, audio data is acquired through an I2S interface, the audio data being Pulse Code Modulation (PCM) data.

Step S402, storing the acquired audio data. In the present embodiment, the acquired audio data is stored by a pulse code modulation (PCM) register (FIFO).

In step S403, the stored audio data is read and encoded and compressed. In this embodiment, the audio data is encoded and compressed using an opus encoder.

Step S404, storing the compressed modulated audio data.

Step S405, performing protocol encapsulation on the encoded audio data. In this embodiment, UDP protocol encapsulation is performed by taking out the encoded data frame. It will be appreciated that in other embodiments, the protocol may also be any other protocol suitable for use.

Step S406, the encapsulated audio data is broadcasted to the local area network.

It can be understood that, in some embodiments, step S402 and step S404 may be omitted, and the present invention is not limited to the order of the above steps.

Referring to FIG. 4 again, the present invention further provides an audio data receiving method, where the method includes the following steps:

Step S407, receiving audio data broadcast by the router 100.

Step S408, analyzing a frame loss condition of the audio data.

Step S409, unpacking and decoding the audio data.

Step S410, playing the decoded audio data.

Through the audio data transmission method and the receiving method described above, audio PCM data can be obtained through the I2S interface, and then, after encoding and compressing and encapsulating the audio data, directly transmitting to the receiving terminal without transmitting the terminal to the audio data. After processing, it is forwarded to the receiving terminal via the network server, which is convenient and quick.

It should be noted that, through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary hardware platform, and of course, all can be implemented by hardware. Based on such understanding, all or part of the technical solution of the present invention contributing to the background art may be embodied in the form of a software product, which may be stored in a storage medium such as a ROM/RAM, a magnetic disk, an optical disk, or the like. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or in some portions of the embodiments.

The above are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and the equivalent changes made by the claims of the present invention are still within the scope of the present invention.

Claims

A data transmission device, comprising:

Obtaining a module for acquiring audio data;

An encoding module, configured to encode and compress the obtained audio data;

a protocol encapsulation module for protocol encapsulation of the encoded audio data;

A broadcast module for broadcasting the encapsulated audio data to a local area network.
The data transmission device of claim 1 further comprising:

a first storage module, configured to store the acquired audio data;

The second storage module is configured to store the encoded compressed audio data.
The data transmission device according to claim 2, wherein the acquisition module is an I2S interface, the audio data is pulse code modulation data, and the first storage module is a pulse code modulation register.
A router comprising at least the data transmission device according to any one of claims 1 to 3.
A data transmission method includes:

Obtain audio data;

Encoding and compressing the acquired audio data;

Protocol encapsulation of the encoded audio data;

The encapsulated audio data is broadcast to the local area network.
The data transmission method according to claim 5, further comprising the steps of: storing the acquired audio data and encoding the compressed audio data.
The data transmission method according to claim 5, wherein the audio data is acquired through an I2S interface, the audio data is pulse code modulation data, and the acquired audio data is stored by a pulse code modulation register.
A data receiving device includes:

a receiving module, configured to receive audio data broadcasted by the router;

An analysis module, configured to analyze a frame loss condition of the audio data;

a decoding module, configured to unpack and decode the audio data;

A playback module for playing decoded audio data.
The data receiving device according to claim 8, further comprising:

a storage module, configured to store the received audio data, and provide the score according to the read command Analysis module.
A data receiving method includes:

Receiving audio data broadcast by a router;

Analyzing a frame loss condition of the audio data;

Unpacking and decoding the audio data;

Play the decoded audio data.