CN115278926A

CN115278926A - Display device and CIS audio transmission method

Info

Publication number: CN115278926A
Application number: CN202210772655.5A
Authority: CN
Inventors: 杨坤; 姜晓胜; 邓子敬
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-11-01

Abstract

The disclosure relates to a display device and a CIS audio transmission method, and relates to the technical field of Bluetooth. The method comprises the following steps: a Bluetooth communication component configured to: establishing first CIS connection with the plurality of Bluetooth devices respectively by adopting first code stream data, and receiving first CIS audio sent by the plurality of Bluetooth devices through the first CIS connection; a controller configured to: muting a first CIS audio received through a first CIS connection; a Bluetooth communication component further configured to: receiving second code stream data sent by the target Bluetooth device through the first CIS connection, updating the first code stream data connected with the first CIS into the second code stream data to establish a second CIS connection, and receiving a second CIS audio sent by the target Bluetooth device through the second CIS connection; a controller configured to: and the second CIS audio received through the second CIS connection is unmuted, and the audio playing component is controlled to play the second audio.

Description

Display device and CIS audio transmission method

Technical Field

The present disclosure relates to the field of bluetooth technologies, and in particular, to a display device, a bluetooth device, and a CIS audio transmission method.

Background

At present, a television is used as a large-screen device in a home scene, better audio-visual experience is brought to a user, the user can project pictures of a plurality of mobile phones to the television so as to play the pictures through the large-screen television, in the process, the pictures are projected through wifi transmission between the plurality of mobile phones and the television, and audio data are transmitted through CIS based on connection Isochronous streams. The CIS is connection-based, so that the performance is better, but the connection-based representation consumes more bandwidth resources, maintains the connection of the link between the mobile phone and the television, and influences the sound quality of the CIS audio received by the television.

Disclosure of Invention

In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a display device, a bluetooth device, and a CIS audio transmission method, which may reduce bandwidth resources consumed by a bluetooth-based CIS connection and improve the sound quality of CIS audio transmission.

In order to achieve the above object, the embodiments of the present disclosure provide the following technical solutions:

in a first aspect, there is provided a display device comprising:

a Bluetooth communication component configured to: establishing first CIS connection with the plurality of Bluetooth devices respectively by adopting first code stream data, receiving first CIS audios sent by the plurality of Bluetooth devices through the first CIS connection, wherein the bandwidth resource occupation amount corresponding to the first code stream data is less than the preset resource amount;

a controller configured to: performing mute processing on a first CIS audio received through the first CIS connection;

a Bluetooth communication component further configured to: receiving second code stream data sent by a target Bluetooth device through a first CIS connection, updating the first code stream data of the first CIS connection into the second code stream data to establish a second CIS connection, receiving a second CIS audio sent by the target Bluetooth device through the second CIS connection, wherein the occupied amount of bandwidth resources corresponding to the second code stream data is greater than or equal to the preset resource amount;

a controller configured to: and the second CIS audio received through the second CIS connection is unmuted, and the audio playing component is controlled to play the second CIS audio.

In a second aspect, the present disclosure provides a bluetooth device, comprising:

a Bluetooth communication component configured to: establishing a first CIS connection with a display device by adopting first code stream data, and sending first CIS audio and second code stream data to the display device through the first CIS connection, wherein the occupied bandwidth resource amount corresponding to the first code stream data is less than the preset resource amount, and the occupied bandwidth resource amount corresponding to the second code stream data is greater than or equal to the preset resource amount;

and updating to establish a second CIS connection with the display device by adopting second code stream data, and sending second CIS audio to the display device through the second CIS connection, so that the display device receives and plays the second CIS audio sent through the second CIS connection.

In a third aspect, the present disclosure provides a CIS audio transmission method applied to a display device, the method including:

establishing first CIS connection with the plurality of Bluetooth devices respectively by adopting first code stream data, receiving first CIS audios sent by the plurality of Bluetooth devices through the first CIS connection, wherein the bandwidth resource occupation amount corresponding to the first code stream data is less than the preset resource amount;

muting a first CIS audio received through a first CIS connection;

receiving second code stream data sent by a target Bluetooth device through a first CIS connection, updating the first code stream data connected with the first CIS into the second code stream data to establish a second CIS connection, receiving a second CIS audio sent by the target Bluetooth device through the second CIS connection, wherein the occupied amount of bandwidth resources corresponding to the second code stream data is larger than or equal to the preset resource amount;

and de-muting the second CIS audio transmitted through the second CIS connection, and controlling the audio playing component to play the second CIS audio.

In a fourth aspect, the present disclosure provides a CIS audio transmission method applied to a bluetooth device, the method including:

establishing a first CIS connection with a display device by adopting first code stream data, and sending first CIS audio and second code stream data to the display device through the first CIS connection, wherein the occupied bandwidth resource amount corresponding to the first code stream data is less than the preset resource amount, and the occupied bandwidth resource amount corresponding to the second code stream data is greater than or equal to the preset resource amount;

and updating to establish a second CIS connection with the display device by adopting second code stream data, and sending a second CIS audio to the display device through the second CIS connection, so that the display device receives and plays the second CIS audio sent through the second CIS connection.

In a fifth aspect, the present disclosure provides a computer-readable storage medium comprising: the computer-readable storage medium stores thereon a computer program which, when executed by a processor, implements the CIS audio transmission method as shown in the third aspect or any one of its alternative embodiments, or the CIS audio transmission method as shown in the fourth aspect or any one of its alternative embodiments.

In a sixth aspect, the present disclosure provides a computer program product comprising a computer program which, when run on a computer, causes the computer to implement the CIS audio transmission method as shown in the third aspect or any one of its alternative embodiments, or the CIS audio transmission method as shown in the fourth aspect or any one of its alternative embodiments.

Compared with the related technology, the technical scheme provided by the embodiment of the disclosure has the following beneficial effects: the display device comprises a Bluetooth communication component and a controller, wherein first CIS connection is established between the Bluetooth communication component and a plurality of Bluetooth devices respectively by adopting first code stream data with bandwidth resource occupation less than preset resource; performing mute processing on a first CIS audio received through the first CIS connection, then receiving second code stream data sent by a target Bluetooth device through the first CIS connection, updating the first CIS connection with the target Bluetooth device into a second CIS connection established by the second code stream data, and receiving a second CIS audio sent by the target Bluetooth device through the second CIS connection, wherein the occupied amount of bandwidth resources corresponding to the second code stream data is larger than or equal to the preset resource amount; further, the second CIS audio is unmuted, and the audio playing component is controlled to play the second CIS audio. The display device establishes a first CIS connection with the plurality of Bluetooth devices through first code stream data with small occupation amount of bandwidth resources, reduces bandwidth resources consumed by the Bluetooth CIS connection, and then updates the first CIS connection to receive a second CIS audio through a second CIS connection with large occupation amount of bandwidth resources, so that the CIS audio can be received through enough bandwidth, and the tone quality of CIS audio transmission is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the embodiments or technical solutions in the prior art description will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic view of a multi-channel screen projection scene of a display device;

FIG. 2 is a schematic view of a scenario in some embodiments provided by embodiments of the present disclosure;

fig. 3 exemplarily shows a block diagram of a configuration of the control apparatus 100 according to an exemplary embodiment;

fig. 4 shows a hardware configuration block diagram of the display apparatus 200 according to an exemplary embodiment;

fig. 5 is a schematic diagram of a software configuration in the display device 200 according to one or more embodiments of the present disclosure;

fig. 6A is a first flowchart of a CIS audio transmission method according to an embodiment of the present disclosure;

fig. 6B is a schematic flow chart diagram of a CIS audio transmission method according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of occupation amounts of code stream data bandwidth resources in an embodiment of the present disclosure;

fig. 8 is a schematic view of a user interface of at least one bluetooth device provided by an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a multi-way projection screen provided in an embodiment of the present disclosure;

fig. 10 is a schematic diagram of a targeted bluetooth device provided in an embodiment of the present disclosure;

FIG. 11A is a schematic diagram illustrating playing a second CIS audio in an embodiment of the present disclosure;

FIG. 11B is a diagram illustrating a data structure of a CIS protocol header;

FIG. 12 is a schematic flow diagram of another CIS audio transmission method provided in embodiments of the present disclosure;

fig. 13 is a third schematic flowchart of a CIS audio transmission method provided in the embodiment of the present disclosure.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

The display device provided by the present disclosure is based on the bluetooth low energy Audio (LE Audio) technology, and the LE Audio has the following functions and characteristics:

(1) Stereo sound supporting a connected state and a disconnected state (broadcast state);

(2) The use of the complexity communication codec (LC 3) provides better sound quality, providing high quality audio even in a low bit rate transmission environment;

(3) The system has a multi-streaming characteristic and supports the transmission of a plurality of independent and synchronous audio streams between an audio source device and one or more audio receiving devices;

(4) The Bluetooth audio broadcasting system has the function of broadcasting audio, can break through the point-to-point transmission function of Bluetooth, enables audio source equipment to be capable of sending one or more audio streams to a plurality of audio receiving equipment, and can achieve personal-based, location-based and even scene-based use experience.

The present disclosure is a stereo set established in LE Audio to support a Connected state, which is a Connected Isochronous Stream (CIS), which is a point-to-point data transmission Stream between a master and a specific Slave (Slave), and is a bi-directional communication protocol with acknowledgement. The CIS mode enables logical transmission between connected devices to transmit data on either side of an ACL (asynchronous connection link). Each CIS may use fixed or variable data size and framed or unframed data on each CIS event, with single or multiple data packets. CIS data traffic can be unidirectional or bidirectional between devices, which uses protocols to improve the reliability of packet delivery in CIS.

The display device and the CIS Audio transmission method provided by the embodiments of the present disclosure are based on the bluetooth low energy Audio (LE Audio) technology, and implement data transmission between the display device and other bluetooth devices in the CIS mode.

With the rapid development of the internet and the popularization of the AI technology in recent years, the smart television gradually enters the daily life of people, and particularly in a multi-person communication scene, the advantage of the large screen of the smart television is reflected to the greatest extent. In order to meet diversified requirements of users, the intelligent television is used for multi-path screen projection, and the intelligent television can well adapt to communication scenes such as party entertainment and meetings. The multi-channel screen projection can be understood as synchronously displaying and outputting pictures and sound of a plurality of small-screen terminal devices such as mobile phones and the like on a large-screen television. Because the multipath screen projection belongs to mirror image screen projection, the network environment has higher requirements, and the delay exists, so that the user can have the problems of unsmooth picture, fuzzy picture quality, poor tone quality and the like in the experience process.

For example, for users who like to play games together at a family party, the function can meet the requirement that all game players watch the games together. In general, only one device is used for shooting a screen to a television in a traditional screen shooting mode, so that when a player wants to watch the fighting condition of other game players during game playing, the sight needs to be shifted to another device, and the game experience of the user is influenced. Based on the multi-channel screen projection technology, the television can simultaneously play real-time game pictures of a plurality of devices, so that all game players can observe the fighting conditions of other players in real time.

As shown in fig. 1, fig. 1 is a schematic view of a scene in which a display device performs multi-way projection, where fig. 1 includes at least one bluetooth device: in the scene of using the television screen projection function to realize the game played by a plurality of users, the bluetooth device 101, the bluetooth device 102, the bluetooth device 103 and the bluetooth device 104 transmit the game pictures and the game audio which are being displayed to the display device, so that the display device displays the game pictures of the bluetooth devices on the display in a split screen manner and plays the game audio.

However, when the display device displays the pictures and sounds of multiple devices by using the multi-channel screen projection technology, the WiFi communication component receives screen projection picture data sent by other bluetooth devices to synchronously play the screen projection picture data, and the bluetooth communication component receives audio data sent by other bluetooth devices to synchronously output the audio data, generally, the screen projection picture data is delayed by 40ms by using WiFi transmission, and the audio data is delayed by about 50ms by using bluetooth transmission, so that the sound and the picture on the display device are asynchronous.

In order to solve the problem of the display device that the sound and the picture are not synchronous in the prior art, the first scheme mainly realizes the bluetooth connection by the classic bluetooth technology, realizes the Coding and decoding by the sub-band Coding (SBC) mode, and optimizes the encoder so as to reduce the delay of the bluetooth transmission of the audio data, but the performance optimization of the encoder has an upper limit and cannot completely solve the problem of the display device that the sound and the picture are not synchronous,

in order to solve the problem of the asynchronous sound and picture of the display device, the second scheme can adopt an LE Audio technology to reduce the time delay of the Bluetooth for transmitting Audio data so as to realize the synchronous sound and picture of the display device. Because the LE Audio technology in the second scheme is implemented based on a Bluetooth Low Energy (BLE) protocol, compared with the first scheme in which a Bluetooth connection is implemented by using a classic Bluetooth technology, a Bluetooth transmission strategy is changed, and the second scheme also improves a coding mode, and an SBC mode is improved to a Low-complexity communication codec (LC 3) mode to implement coding and decoding, the delay of Bluetooth transmission of Audio data can be effectively reduced.

However, in the process that a CIS in a low-power Audio (LE Audio) technology is connected to a plurality of bluetooth devices and waits for one of the bluetooth devices to transmit a CIS Audio, the CIS with a large resource occupation amount is connected to the plurality of bluetooth devices to ensure data transmission efficiency, bandwidth resources consumed by the corresponding plurality of CIS connections are large, however, the remaining bandwidth resources are difficult to ensure high-quality CIS Audio transmission, and thus the tone quality of CIS Audio transmission is affected.

In order to solve the above technical problem, an embodiment of the present disclosure provides a display device, where the display device includes a bluetooth communication component and a controller, and first CIS connections are respectively established with a plurality of bluetooth devices by using first code stream data with bandwidth resource occupation less than a preset resource amount through the bluetooth communication component; performing mute processing on a first CIS audio received through the first CIS connection, then receiving second code stream data sent by a target Bluetooth device through the first CIS connection, updating the first code stream data connected with the first CIS into second code stream data to establish a second CIS connection, and receiving a second CIS audio sent by the target Bluetooth device through the second CIS connection, wherein the occupied amount of bandwidth resources corresponding to the second code stream data is greater than or equal to the preset resource amount; further, the second CIS audio is unmuted, and the audio playing component is controlled to play the second CIS audio. The display device establishes a first CIS connection with the plurality of Bluetooth devices through first code stream data with small occupation amount of bandwidth resources, reduces bandwidth resources consumed by the Bluetooth CIS connection, and then updates the first CIS connection to receive a second CIS audio through a second CIS connection with large occupation amount of bandwidth resources, so that the CIS audio can be received through enough bandwidth, and the tone quality of CIS audio transmission is improved.

Fig. 2 is a schematic view of a scenario in some embodiments provided by embodiments of the present disclosure. As shown in fig. 2, fig. 2 includes a control apparatus 100, a display device 200, a smart device 300, a server 400, and a plurality of bluetooth devices 500. Wherein, the user can operate the display device 200 through the smart device 300 or the control apparatus 100, and play the audio and video resources on the display device 200.

As shown in fig. 2, taking as an example that the user operates the display apparatus 200 through the control device 100, the user turns on the bluetooth communication module provided in the display apparatus 200 through the control device 100. Firstly, establishing first CIS connection with a plurality of Bluetooth devices respectively by using first code stream data with bandwidth resource occupation less than preset resource amount through a Bluetooth communication assembly; then carrying out mute processing on a first CIS audio received through the first CIS connection, then receiving second code stream data sent by a target Bluetooth device through the first CIS connection, updating the first code stream data connected with the first CIS into second code stream data to establish a second CIS connection, and receiving a second CIS audio sent by the target Bluetooth device through the second CIS connection, wherein the occupied amount of bandwidth resources corresponding to the second code stream data is greater than or equal to the preset resource amount; further, the second CIS audio is unmuted, and the audio playing component is controlled to play the second CIS audio. The display device establishes first CIS connection with the plurality of Bluetooth devices through first code stream data with small bandwidth resource occupation, reduces bandwidth resources consumed by connection based on the Bluetooth CIS, and then updates the CIS connection to receive CIS audio through second CIS connection with large bandwidth resource occupation, achieves the purpose of receiving CIS audio through enough bandwidth, and improves the tone quality of CIS audio transmission.

In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes infrared protocol communication, bluetooth protocol communication, wireless or other wired method to control the display device 200. The user may input a user command through a key on a remote controller, voice input, control panel input, etc. to control the display apparatus 200. In some embodiments, mobile terminals, tablets, computers, laptops, and other smart devices may also be used to control the display device 200.

In some embodiments, a plurality of bluetooth devices 500 may install a software application with the display device 200 to implement connection communication through a network communication protocol for the purpose of one-to-one control operation and data communication. The audio and video contents displayed on a plurality of bluetooth devices 500 may also be transmitted to the display device 200, so that the display device 200 with synchronous display function may also perform data communication with the server 400 through a plurality of communication methods. The display device 200 may be allowed to be communicatively connected through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display apparatus 200. The display device 200 may be a liquid crystal display, an OLED display, a projection display device. The display apparatus 200 may additionally provide an intelligent network television function providing a computer support function in addition to the broadcast receiving television function.

Fig. 3 exemplarily shows a block diagram of a configuration of the control apparatus 100 according to an exemplary embodiment. As shown in fig. 3, the control device 100 includes a controller 110, a communication interface 130, a user input or output interface 140, a memory, and a power supply. The control apparatus 100 may receive an input operation instruction from a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an interaction intermediary between the user and the display device 200. The communication interface 130 is used for communicating with the outside, and includes at least one of a WIFI chip, a bluetooth module, NFC, or an alternative module. The user input/output interface 140 includes at least one of a microphone, a touch pad, a sensor, a key, or an alternative module.

Fig. 4 illustrates a hardware configuration block diagram of the display apparatus 200 according to an exemplary embodiment. The display device 200 as shown in fig. 4 includes: a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, a memory, a power supply, and the like. The controller 250 includes a central processing unit, a video processor, an audio processor, (Read-Only Memory, ROM), and first to nth interfaces for input/output. The display 260 may be at least one of a liquid crystal display, an OLED display, a touch display, and a projection display, and may also be a projection device and a projection screen. The tuner demodulator 210 receives a broadcast television signal through a wired or wireless reception manner, and demodulates an audio/video signal, such as an Electronic Program Guide (EPG) data signal, from a plurality of wireless or wired broadcast television signals. The detector 230 is used to collect signals of an external environment or interaction with the outside. The controller 250 and the tuner-demodulator 210 may be located in different separate devices, that is, the tuner-demodulator 210 may also be located in an external device of the main device where the controller 250 is located, such as an external set-top box.

In some embodiments, the display device is a terminal device with a display function, such as a television, a mobile phone, a computer, a learning machine, and the like.

In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored in memory. The controller 250 controls the overall operation of the display apparatus 200. A user may input a user command on a Graphical User Interface (GUI) displayed on the display 260, and the user input interface receives the user input command through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface receives the user input command by recognizing the sound or gesture through the sensor.

An output interface (display 260, and/or audio output interface 270) configured to output user interaction information;

a communicator 220 for communicating with the server 400 or other devices.

The present disclosure provides a display apparatus, including:

a controller 250 configured to: performing mute processing on a first CIS audio received through the first CIS connection;

a Bluetooth communication component further configured to: receiving second code stream data sent by a target Bluetooth device through a first CIS connection, updating the first code stream data connected with the first CIS into the second code stream data to establish a second CIS connection, receiving a second CIS audio sent by the target Bluetooth device through the second CIS connection, wherein the occupied amount of bandwidth resources corresponding to the second code stream data is larger than or equal to the preset resource amount;

a controller configured to: and de-muting the CIS audio transmitted through the second CIS connection, and controlling the audio playing component to play the second CIS audio.

It should be noted that the bluetooth communication module can implement the same or similar functions as the bluetooth module in the communicator 220 shown in fig. 4, and the details of the disclosure are not repeated herein.

The display device firstly establishes a first CIS connection with the plurality of Bluetooth devices through first code stream data with small resource occupation amount, and performs mute processing on the CIS received through the first CIS connection, so that the display device is prevented from outputting a plurality of CIS audios at the same time to influence user experience; the second code stream data with large resource occupation quantity sent by the target Bluetooth device is received through the first CIS connection, the first code stream data connected with the first CIS is updated to be the second code stream data, and the second CIS connection is established, so that the CIS audio sent by the target Bluetooth device can be received in a targeted mode through the second CIS connection with large bandwidth quantity, the display device further unmutes the CIS audio, and the high-tone CIS audio is output.

It can be understood that the first CIS connection with the plurality of bluetooth devices is maintained with less consumption of bandwidth resources, and in the case where the target device transmits the second bitstream data, it indicates that the target bluetooth device desires to output CIS audio through the connection with the display device, thereby adjusting establishment of the second CIS connection between the target bluetooth device and the display device for consuming more bandwidth resources, thereby ensuring high-quality CIS audio transmission between the target bluetooth device and the display device. In addition, the method can ensure that the target Bluetooth device accurately outputs high-quality CIS audio in a multi-channel screen projection scene, avoid the phenomena of noise, blockage and the like, and improve the user experience.

As an optional implementation manner of the embodiment of the present disclosure, the controller is further configured to: and after the value of the CIE zone bit is detected as a target value in the second CIS audio, updating second code stream data connected with the second CIS into first code stream data so as to establish a first CIS connection between the display device and the target Bluetooth device.

As an optional implementation manner of the embodiment of the present disclosure, the display device further includes: a WiFi communication component configured to: after the Bluetooth communication assembly and the plurality of Bluetooth devices respectively establish first CIS connection by adopting first code stream data, receiving the occurrence time of robbing of the microphone sent by at least one Bluetooth device; a controller 250 further configured to: determining a target Bluetooth device with the earliest robbing occurrence time from at least one Bluetooth device; a WiFi communication component further configured to: sending a successful wheat robbing indication to the target Bluetooth device; a Bluetooth communication component, specifically configured to: after the successful indication of the microphone grabbing is sent to the target Bluetooth device, receiving first CIS audio and second code stream data sent by the target Bluetooth device through the first CIS connection, updating the first code stream data of the first CIS connection into second code stream data to establish a second CIS connection, and receiving the second CIS audio sent by the target Bluetooth device through the second CIS connection.

As an optional implementation manner of the embodiment of the present disclosure, the display device further includes: a display 260 configured to: displaying a video picture; a WiFi communication component further configured to: receiving screen projection picture data sent by a plurality of Bluetooth devices so as to receive multi-path screen projection picture data; a controller 250 further configured to: controlling a display to display multi-path screen projection picture data in a split screen manner; the WiFi communication component is specifically configured to: after the display displays the multi-path screen projection picture data in a split screen mode, the occurrence time of the robbery sent by at least one Bluetooth device in the plurality of Bluetooth devices is received.

It should be noted that the WiFi communication component can implement the same or similar functions as the WiFi module in the communicator 220 shown in fig. 4.

As an optional implementation manner of the embodiment of the present disclosure, the first code stream data includes: the sampling rate is 16khz, the frame interval is 10ms, the data amount contained in each frame is 40 bytes, and the data rate is 32kbps; and/or the second code stream data comprises: the sampling rate is 32khz, the frame interval is 10ms, the amount of data contained in each frame is 80 bytes, and the data rate is 64kbps.

As an optional implementation manner of this embodiment of the present disclosure, the controller 250 is further configured to: after the CIE zone bit value detected in the second CIS audio is a target value, the CIS audio transmission of the target Bluetooth device is determined to be completed, and bandwidth resources occupied by the second CIS connection are released; and determining the remaining time length of the current isochronous transmission time length, and controlling the WiFi communication component to use the released bandwidth resources in the remaining time length.

As shown in fig. 5, fig. 5 is a schematic diagram of software configuration in a display device 200 according to one or more embodiments of the present disclosure, and as shown in fig. 5, the system is divided into four layers, which are, from top to bottom, an Application (Applications) layer (referred to as an "Application layer"), an Application Framework (referred to as a "Framework layer"), an Android runtime (Android runtime) and a system library layer (referred to as a "system runtime library layer"), respectively. The inner core layer comprises at least one of the following drivers: audio drive, display driver, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (like fingerprint sensor, temperature sensor, pressure sensor etc.) and power drive etc.. The video data transmission method provided by the embodiment of the disclosure can be implemented based on the display device, and specifically can be implemented by a player in the display device.

An embodiment of the present disclosure further provides a bluetooth device, where the bluetooth device includes:

a Bluetooth communication component configured to: establishing a first CIS connection with a display device by adopting first code stream data, and sending second code stream data to the display device through the first CIS connection, wherein the occupied bandwidth resource amount corresponding to the first code stream data is less than the preset resource amount, and the occupied bandwidth resource amount corresponding to the second code stream data is greater than or equal to the preset resource amount;

The Bluetooth device firstly establishes a first CIS connection with the display device through first code stream data, and sends second code stream data to the display device through the first CIS connection to indicate the display device to be switched to a second CIS connection established through the second code stream data, the occupation amount of second CIS connection bandwidth resources is increased compared with the first CIS connection, and the tone quality of CIS audio transmitted through the second CIS connection can be guaranteed under the condition that the connection between the display device and other Bluetooth devices is maintained.

As an optional implementation manner of the embodiment of the present disclosure, the bluetooth device further includes: a WiFi communication component configured to: after the Bluetooth communication assembly and the display device establish a first CIS connection by adopting first code stream data, transmitting the occurrence time of the microphone robbery to the display device; a Bluetooth communication component, specifically configured to: after receiving a microphone grabbing success indication sent by the display device through the WiFi communication assembly, sending first CIS audio and second code stream data to the display device through the first CIS connection, updating to establish a second CIS connection with the display device through the second code stream data, and sending the second CIS audio to the display device through the second CIS connection.

As an optional implementation manner of the embodiment of the present disclosure, the bluetooth device further includes: a WiFi communication component further configured to: sending screen projection picture data to a display device so that the display device receives and displays the screen projection picture data; a WiFi communication component specifically configured to: after the WiFi communication component sends screen projection picture data to the display equipment, the occurrence time of the microphone grabbing is sent to the display equipment.

For more detailed description of the present solution, the following description is made in conjunction with a flowchart in an exemplary manner, and it is understood that the steps involved in the flowchart may include more steps or fewer steps in actual implementation, and the sequence between the steps may also be different, so as to control that the CIS audio transmission method provided in the embodiment of the present disclosure can be implemented.

As shown in fig. 6A, fig. 6A is a schematic flowchart of a CIS audio transmission method provided in an embodiment of the present disclosure, where the method is applied to a display device, and the method includes the following steps S601 to S604:

s601, establishing first CIS connection with the plurality of Bluetooth devices respectively by adopting first code stream data, and receiving first CIS audio sent by the plurality of Bluetooth devices through the first CIS connection.

And the bandwidth resource occupation amount corresponding to the first code stream data is less than the preset resource amount. The first code stream data comprises: at least one of: sample rate, frame interval, amount of data contained per frame, data rate. And the code stream data is used for indicating a mode of receiving and processing subsequent CIS audio sent by the target terminal equipment by the display equipment. The preset resource amount is set according to actual needs, and this disclosure is not described herein.

In some embodiments, the first codestream data includes a sampling rate of 16khz, a frame interval of 10ms, a data amount included in each frame of 40 bytes, and a data rate of 32kbps, and it should be noted that the above-mentioned setting of the first codestream data is only an exemplary illustration, and the disclosure does not limit this.

As shown in table 1, table 1 shows various parameters included in the code stream data.

TABLE 1

As shown in fig. 7, fig. 7 is a schematic diagram of occupation amount of code stream data bandwidth resources in the embodiment of the present disclosure. As shown in fig. 7, when the code stream data is 16 \u2, the occupied bandwidth resource is 11%, and it can be understood that, when the multi-channel screen projection is four-channel screen projection, the first CIS connections between the four mobile phones and the television are established through the first code stream data 16 \u2, and then the occupied bandwidth resource after the four mobile phones are connected with the television is less than 50%.

In some embodiments, as shown in fig. 6B, fig. 6B is a second flowchart of a CIS audio transmission method provided in the embodiment of the present disclosure, and step S601 may include the following steps S6011 to S6013:

s6011, receiving the time of occurrence of the robbing of the microphone sent by at least one Bluetooth device through a WiFi communication assembly.

The time of occurrence of the microphone grabbing refers to the time that at least one Bluetooth device receives the time that a user clicks the microphone grabbing control on the respective device, and the at least one Bluetooth device packs the microphone grabbing time and sends the microphone grabbing time to the display device after determining the time that the user clicks the microphone grabbing control. In a scene that a plurality of users play games together by utilizing a plurality of Bluetooth devices, the occurrence time of the microphone robbery can be understood as the time when a certain user clicks a microphone robbing control on the Bluetooth device, and the user clicks the microphone robbing control and expects the display device to output the game sound effect or voice and other audio data of the Bluetooth device.

As shown in fig. 8, fig. 8 is a schematic view of a user interface of at least one bluetooth device according to an embodiment of the present disclosure. The figure shows a "robbing" control 801 at a corresponding location of the user interface. When the user clicks the 'wheat robbing' control 801, the occurrence time of wheat robbing is triggered to be sent to the display device. It should be noted that fig. 8 is only an exemplary illustration of a specific position of the "robbery" control, and the disclosure is not limited in particular.

In some embodiments, before the display device receives the occurrence time of wheat robbery sent by at least one bluetooth device, in order to meet diversified audiovisual requirements of users, the present disclosure provides an implementation based on a multi-channel screen projection technology, in which the display device first receives screen projection image data sent by a plurality of bluetooth devices through a WiFi communication component to receive the multi-channel screen projection image data; and then the display device controls the display to display the multi-path screen projection picture data in a split screen mode.

Illustratively, as shown in fig. 9, fig. 9 is a schematic diagram of a multi-cast screen provided in the embodiment of the present disclosure, and fig. 9 includes a plurality of bluetooth devices: bluetooth device 901, bluetooth device 902, bluetooth device 903, bluetooth device 904, and display device, display device receives the screen projection picture data 911 that bluetooth device 901 sent, screen projection picture data 912 that bluetooth device 902 sent, screen projection picture data 913 that bluetooth device 903 sent, screen projection picture data 914 that bluetooth device 904 sent, and then display device control display divides the screen display to show the multichannel and throws the screen data: the projection screen data 911 is displayed in the area C1, the projection screen data 912 is displayed in the area C2, the projection screen data 913 is displayed in the area C3, and the projection screen data 914 is displayed in the area C4. It should be noted that fig. 9 is only an exemplary illustration, and the present disclosure does not specifically limit the display position of the screen projection image data corresponding to each bluetooth device.

The display device controls the display to display the multi-path screen projection picture data in a split screen manner, the display device can be understood as the display device only displays the screen projection picture data of the plurality of Bluetooth devices, each screen projection picture data is silent, the audio data sent by the plurality of Bluetooth devices are not received, and in order to meet the requirement of a user on outputting the audio data, after the multi-path screen projection picture data are displayed, the robbing occurrence time sent by at least one Bluetooth device in the plurality of Bluetooth devices is received through the WiFi communication assembly, so that the screen projection face change data of the plurality of Bluetooth devices are displayed on the display device, the robbing occurrence time sent by at least one Bluetooth device is received, a target Bluetooth device is determined from the robbing occurrence time, the interestingness of multi-path screen projection is enhanced, and the user experience is improved.

In the embodiment, the display equipment receives screen projection picture data sent by the plurality of Bluetooth equipment, so that multi-path screen projection of the display equipment is realized, and the entertainment requirement of a user when a plurality of people meet is met; receive the emergence time of robbing the wheat that at least one bluetooth device sent in a plurality of bluetooth devices, promote the interactive nature and the interest of multichannel head screen to confirm target bluetooth device among at least one bluetooth device, satisfy this user's that target bluetooth device corresponds speech demand, be adapted to multi-user communication scene, promote user experience.

S6012, the target Bluetooth device with the earliest wheat robbing occurrence time is determined from the at least one Bluetooth device.

In some embodiments, the display device compares the microphone grabbing occurrence time sent by at least one bluetooth device, and determines the bluetooth device with the earliest microphone grabbing occurrence time as the target bluetooth device.

Continuing with the above example shown in fig. 9, as shown in fig. 10, fig. 10 is a schematic diagram of a target-determining bluetooth device provided in the embodiment of the present disclosure. In fig. 10, each of bluetooth device 901, bluetooth device 902, bluetooth device 903, and bluetooth device 904 sends its respective robbery occurrence time to the display device; wherein, the robbery occurrence time of the bluetooth device 901 is 13, the robbery occurrence time of the bluetooth device 902 is 13. Comparing the occurrence time of the robbery corresponding to the bluetooth device, determining that the earliest time of the robbery occurrence time is 13.

In some embodiments, in the case that the number of target bluetooth devices with the earliest robbery occurrence time is determined to be a plurality from at least one bluetooth device, determining any one of the target bluetooth devices as a final target bluetooth device; or, according to the priorities of the plurality of target bluetooth devices, determining the target bluetooth device with the highest priority as the final target bluetooth device. Illustratively, following the above example shown in fig. 10, the robbery occurrence time of the bluetooth device 901 is 13: bluetooth device 901 and bluetooth device 902. The priorities of the bluetooth device 901 and the bluetooth device 902 are further compared, and in the case that the priority of the bluetooth device 901 is higher than that of the bluetooth device 902, it is determined that the bluetooth device 901 is the target bluetooth device. The steps compare the occurrence time of the wheat robbery sent by at least one Bluetooth device, and the Bluetooth device with the earliest occurrence time of the wheat robbery is determined to serve as the target Bluetooth device, so that the interest of multi-path screen projection is enhanced, and the requirement of outputting audio data after the target Bluetooth device successfully robbes the wheat is met.

S6013, sending a successful wheat robbing indication to the target Bluetooth device.

In some embodiments, after determining the target bluetooth device with the earliest robbery occurrence time from the at least one bluetooth device, the display device sends a robbery success indication to the target bluetooth device.

As shown in fig. 10, after determining that the target bluetooth device with the earliest occurrence time of the robbery is the bluetooth device 901, sending a successful robbery indication to the bluetooth device 901.

S602, carrying out mute processing on the first CIS audio received through the first CIS connection.

In some embodiments, the display device receives CIS audio sent by multiple bluetooth devices through the first CIS connection through the bluetooth communication module, and it can be understood that, in a scene where multiple people play a game together and perform multi-channel screen projection on the display device, the multiple bluetooth devices are connected to the display device, and then the display device will uniformly allocate bandwidth resources to receive CIS audio sent by the multiple bluetooth devices, and the number of bluetooth devices to be connected is large but the total bandwidth resources are limited, so that the bandwidth resources corresponding to each bluetooth device are required to be small, and as aforementioned, the first CIS connection between four mobile phones and a television is established through the first code stream data 16 u 2, then for a scene where four mobile phones (as bluetooth devices) are connected to a television (as a display device), the bandwidth resources occupied after connection is less than 50%, so as to ensure the realizability of multi-channel screen projection.

Because the bandwidth resource occupied by the first CIS connection is small, when the display device directly receives CIS audio sent by a plurality of Bluetooth devices through the first CIS connection, it is difficult to ensure the efficiency of receiving the CIS audio and the tone quality of the received CIS audio, and situations such as large time delay and noise can occur. It can be understood that the display device does not output and play the CIS audio transmitted by the first CIS for the plurality of bluetooth devices.

Illustratively, as shown in fig. 9, the display device displays only multi-screen data, and mutes the first CIS audio received through the first CIS connection, that is, does not output the first CIS audio received through the first CIS connection individually.

S603, receiving second code stream data sent by the target Bluetooth device through the first CIS connection, updating the first code stream data connected with the first CIS into the second code stream data to establish a second CIS connection, and receiving a second CIS audio sent by the target Bluetooth device through the second CIS connection.

And the bandwidth resource occupation amount corresponding to the second code stream data is greater than or equal to the preset resource amount.

It should be noted that, in order to reduce the time delay in the CIS Audio transmission process and ensure the Audio and video synchronization of the display device, the CIS connection between the display device and the target bluetooth device may be maintained, after receiving the second code stream data, the first CIS connection is not disconnected and the second CIS connection is reestablished, but the previous first code stream data is updated by using the second code stream data sent through the first CIS connection, so that the first CIS connection is updated to the second CIS connection, which may be understood as a consistent connection state between the display device and the target bluetooth device, thereby reducing the time consumed by disconnecting and reconnecting the CIS, and improving the efficiency of CIS Audio transmission, thereby achieving a better Audio and video synchronization effect.

In some embodiments, the second bitstream data may include: the sampling rate is 32khz, the frame interval is 10ms, the amount of data contained in each frame is 80 bytes, and the data rate is 64kbps. As shown in table 1, the parameters included in the second bitstream data may also be set to other values. It should be noted that the second code stream data is larger than the first code stream data, so as to ensure sufficient bandwidth to transmit high-quality CIS audio.

In some embodiments, referring to fig. 6B, step S603 may be after step S6013, where an embodiment of the present disclosure provides an implementation manner, after sending a successful indication of microphone robbing to the target bluetooth device, receiving second code stream data sent by the target bluetooth device through the first CIS connection, updating the first code stream data of the first CIS connection to the second code stream data to establish a second CIS connection, and receiving a CIS audio sent by the target bluetooth device through the second CIS connection.

S604, the CIS audio sent through the second CIS connection is unmuted, and the audio playing component is controlled to play the second CIS audio.

The display device performs mute processing on first CIS audio sent through a first CIS connection at first, after the target Bluetooth device sends second CIS audio through a second CIS connection, the display device receives the second CIS audio through the second CIS connection by using second code stream data at first, and then performs mute removing operation on the second CIS audio so as to avoid explosive sound generated by tone quality jump, further controls an audio playing assembly to play the CIA audio and guarantee good audio-visual experience of a user.

Illustratively, following the previous example, as shown in fig. 11A, fig. 11A is a schematic diagram of playing a second CIS audio in the embodiment of the present disclosure. In fig. 11, the display device unmutes the second CIS audio sent by the bluetooth device 901 through the second CIS connection, and controls the audio playing component configured in the display device to play the second CIS audio, while

other bluetooth devices

902, 903, and 904 are still connected to the display device through the first CIS connection, and the first CIS audio sent by these bluetooth devices through the second CIS connection is still subjected to mute processing.

In some embodiments, after detecting that the value of the CIE flag bit is the target value in the second CIS audio received through the second CIS connection, it is determined that the transmission of the CIS audio of the target bluetooth device is completed, and the bandwidth resource occupied by the second CIS connection is released;

fig. 11B is a schematic diagram of a data structure of the CIS protocol header. As shown in fig. 11B, the CIS includes therein: a preamble 91, an access address 92, a protocol data unit 93, and a Cyclic Redundancy Check (CRC) 94.

The number of data bits of the preamble 91 is 1 or 2 Octets (Octets), the number of data bits of the access address 92 is 4Octets, the number of data bits of the pdu 93 is 2-257 Octets, and the number of data bits of the CRC is 3Octets. The protocol data unit 93 includes: a protocol header 931, a payload 932, and a message Integrity Check code (MIC) 933. The number of data bits of the protocol header 931 is 16 bits, the number of data bits of the payload 932 is 0-251Octets, the number of data bits of the message integrity check code 933 is 10 or 14Octets when the data is transmitted through LE 1M PHY25 (a low power standard with a symbol rate of 1 Msps), the number of data bits of the message integrity check code 933 is 11 or 15Octets when the data is transmitted through LE 2M PHY25 (a low power standard with a symbol rate of 2 Msps), and the number of data bits of the message integrity check code 933 depends on whether a message integrity check is included in the payload of the protocol data unit 93.

The protocol header 931 of the protocol data unit 93 further includes: PDU type identification (LLID), next Expected Sequence Number (NESN), sequence Number (SN), close synchronization event bit (CIE), reserved data bit (RFU), and Y effective Length (Length). The CIS connected and transmitted by the CIS has two types, one type is Data and is called LL Data PDU, and the other type is Control information and is called LL Control PDU; the LLID is used for distinguishing the type of the CIS as data or control information; NESN and SN for Acknowledgement (Acknowledgement) and Flow Control (Flow Control) in CIS transmission; the effective length is used to indicate the number of data bits of the effective data (the sum of the number of data bits of the payload and the MIC).

Wherein, the closing synchronization event bit (CIE) is a data flag bit carried in the CIS audio protocol header. When the value of the CIE flag bit is 1, the CIS audio transmission is completed, and when the value of the CIE flag bit is 0, the CIS audio transmission is not completed. When the value of the CIE flag is the target value, that is, the value of the CIE flag is 1, it is determined that the CIS audio transmission is completed this time.

Further, the remaining duration of the current isochronous transmission duration is determined, and the WiFi communication component is controlled to use the released bandwidth resources within the remaining duration. The method can be understood that the display device finishes receiving the CIS audio in a transmission period, the bandwidth resources occupied by the Bluetooth communication assembly configured by the display device are released, and the WiFi communication assembly can conveniently transmit the projected screen image data by using the bandwidth resources in the remaining duration of the transmission period, so that the utilization rate of the bandwidth resources is improved, and the sound and picture synchronization of the display device is further ensured.

In some embodiments, after the CIS audio transmission of the target bluetooth device is determined to be completed after the CIE flag bit value is detected as the target value in the second CIS audio, second code stream data of a second CIS connection established between the display device and the target bluetooth device is updated to the first code stream data, so as to establish the first CIS connection between the display device and the target bluetooth device. It can be understood that after the transmission of the second CIS audio is completed through the second CIS connection, the first CIS connection with the smaller bandwidth resource occupation amount is updated back, so that other bluetooth devices can transmit the CIS audio to the display device conveniently.

In summary, according to the CIS audio transmission method provided by the present disclosure, first code stream data with a bandwidth resource occupation amount less than a preset resource amount is first adopted to establish a first CIS connection with a plurality of bluetooth devices respectively; and then carrying out mute processing on the first CIS audio received through the first CIS connection, wherein the first CIS audio received through the first CIS connection with smaller bandwidth resources may have the problems of large delay and poor tone quality, and in order to avoid influencing user experience, the first CIS audio received through the first CIS connection is subjected to mute processing. Then, receiving second code stream data sent by the target Bluetooth device through the first CIS connection, updating the first code stream data connected with the first CIS into the second code stream data to establish a second CIS connection, and receiving a second CIS audio sent by the target Bluetooth device through the second CIS connection, wherein the occupied amount of bandwidth resources corresponding to the second code stream data is greater than or equal to the preset resource amount; further, the second CIS audio is unmuted, and the audio playing component is controlled to play the second CIS audio. The display device establishes first CIS connection with the plurality of Bluetooth devices through first code stream data with small occupation amount of bandwidth resources, bandwidth resources consumed by connection based on the Bluetooth CIS are reduced, and then the second CIS audio is updated to be received through second CIS connection with large occupation amount of bandwidth resources.

As shown in fig. 12, fig. 12 is a schematic flowchart of another CIS audio transmission method provided in the embodiment of the present disclosure, and is applied to a bluetooth device, where the method includes the following steps S1201 to S1202:

s1201, establishing a first CIS connection with the display device by adopting the first code stream data, and sending a first CIS audio and second code stream data to the display device through the first CIS connection.

The bandwidth resource occupation amount corresponding to the first code stream data is less than the preset resource amount, and the first code stream data comprises: the sampling rate is 16khz, the frame interval is 10ms, the data amount contained in each frame is 40 bytes, and the data rate is 32kbps;

the bandwidth resource occupation amount corresponding to the second code stream data is greater than or equal to the preset resource amount. The second bitstream data includes: the sampling rate is 32khz, the frame interval is 10ms, the amount of data contained in each frame is 80 bytes, and the data rate is 64kbps.

And S1202, updating to establish a second CIS connection with the display device by adopting second code stream data, and sending a second CIS audio to the display device through the second CIS connection, so that the display device receives and plays the second CIS audio sent through the second CIS connection.

It should be noted that, for the specific implementation in the foregoing method, reference may be made to the implementation in the foregoing embodiment, and details are not described herein.

As shown in fig. 13, fig. 13 is a schematic flow diagram of a third CIS audio transmission method provided in the embodiment of the present disclosure, where the method includes the following steps S1301 to S1312:

s1301, the Bluetooth device sends screen projection picture data through the WiFi communication assembly.

S1302, the display device receives the screen projection picture data and controls the display to display the screen projection picture data.

S1303, the display device and the display device establish first CIS connection through the Bluetooth communication assembly by adopting first code stream data.

S1304, the Bluetooth device sends first CIS audio to the display device through the first CIS connection.

S1305, the display device performs mute processing on the first CIS audio received through the first CIS connection.

And S1306, the Bluetooth device sends the robbing occurrence time to the display device through the WiFi communication component.

S1307, the display device determines that the Bluetooth device is the target Bluetooth device according to the robbing occurrence time.

And S1308, the display device sends a successful wheat robbing indication to the target Bluetooth device.

S1309, after the Bluetooth device receives the successful indication of the wheat robbing sent by the display device through the WiFi communication component, the Bluetooth device sends second code stream data to the display device through the first CIS connection.

S1310, the display device receives second code stream data, and updates first code stream data of the first CIS connection into the second code stream data to establish a second CIS connection.

S1311, the Bluetooth device sends a second CIS audio through a second CIS connection;

s1312, the display device unmutes the second CIS audio received through the second CIS connection and controls the audio playing component to play.

It should be noted that, for the specific implementation in the foregoing method, reference may be made to the implementation in the foregoing embodiment, which is not described herein again.

The embodiment of the disclosure provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process executed by the CIS audio transmission method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

The present disclosure provides a computer program product including a computer program which, when run on a computer, causes the computer to implement the above-described CIS audio transmission method.

The foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. However, the foregoing discussion in some embodiments is not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles and the practical application, to thereby enable others skilled in the art to best utilize the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A display device, comprising:

a Bluetooth communication component configured to: establishing first CIS connection with a plurality of Bluetooth devices respectively by adopting first code stream data, and receiving first CIS audios sent by the plurality of Bluetooth devices through the first CIS connection, wherein the bandwidth resource occupation amount corresponding to the first code stream data is less than the preset resource amount;

a controller configured to: mute a first CIS audio received over the first CIS connection;

a Bluetooth communication component further configured to: receiving second code stream data sent by a target Bluetooth device through the first CIS connection, updating first code stream data connected with the first CIS into the second code stream data to establish a second CIS connection, receiving a second CIS audio sent by the target Bluetooth device through the second CIS connection, wherein the occupied amount of bandwidth resources corresponding to the second code stream data is larger than or equal to the preset resource amount;

the controller configured to: and unmuting the second CIS audio received through the second CIS connection, and controlling an audio playing component to play the second CIS audio.

2. The display device according to claim 1, wherein the controller is further configured to:

after the value of the CIE zone bit is detected to be a target value in the second CIS audio, updating second code stream data of the second CIS connection into the first code stream data so as to establish a first CIS connection between the display device and the target Bluetooth device.

3. The display device according to claim 1, characterized in that the display device further comprises:

a WiFi communication component configured to: after the Bluetooth communication assembly and the plurality of Bluetooth devices respectively establish first CIS connection by adopting first code stream data, receiving the occurrence time of robbery sent by at least one Bluetooth device;

the controller further configured to: determining a target Bluetooth device with the earliest robbing occurrence time from the at least one Bluetooth device;

the WiFi communication component further configured to: sending a successful wheat robbing indication to the target Bluetooth equipment;

the bluetooth communication component is specifically configured to: after a successful wheat robbing indication is sent to the target Bluetooth device, the first CIS audio and the second code stream data sent by the target Bluetooth device through the first CIS connection are received, the first code stream data of the first CIS connection are updated to the second code stream data to establish a second CIS connection, and the second CIS audio sent by the target Bluetooth device is received through the second CIS connection.

4. The display device according to any one of claims 1 to 3,

the controller further configured to: after the CIE zone bit value detected in the second CIS audio is a target value, determining that CIS audio transmission of the target Bluetooth device is completed, and releasing bandwidth resources occupied by the second CIS connection;

and determining the remaining time length of the current isochronous transmission time length, and controlling the WiFi communication component to use the released bandwidth resources in the remaining time length.

5. The display device according to claim 2, characterized in that the display device further comprises:

a display configured to: displaying a video picture;

the WiFi communication component further configured to: receiving screen projection picture data sent by a plurality of Bluetooth devices so as to receive multi-path screen projection picture data;

the controller further configured to: controlling the display to display the multi-path screen projection picture data in a split screen manner;

a WiFi communication component specifically configured to: and after the display displays the multi-path screen projection picture data in a split screen manner, receiving the occurrence time of the robbery sent by at least one Bluetooth device in the plurality of Bluetooth devices.

6. A bluetooth device, comprising:

a Bluetooth communication component configured to: establishing a first CIS connection with a display device by adopting first code stream data, and sending first CIS audio and second code stream data to the display device through the first CIS connection, wherein the occupied bandwidth resource amount corresponding to the first code stream data is less than a preset resource amount, and the occupied bandwidth resource amount corresponding to the second code stream data is greater than or equal to the preset resource amount;

7. The bluetooth device of claim 6, wherein the bluetooth device further comprises:

a WiFi communication component configured to: after the Bluetooth communication assembly and the display device establish a first CIS connection by adopting first code stream data, sending the microphone robbing occurrence time to the display device;

the bluetooth communication assembly is specifically configured to: after a successful indication of microphone grabbing sent by a display device is received through the WiFi communication assembly, the first CIS audio and second code stream data are sent to the display device through the first CIS connection, the first code stream data of the first CIS connection are updated to the second code stream data to establish a second CIS connection, and the second CIS audio is sent to the display device through the second CIS connection.

8. The bluetooth device according to claim 7, wherein the bluetooth device further comprises:

the WiFi communication component further configured to: sending screen projection picture data to a display device to enable the display device to receive and display the screen projection picture data;

a WiFi communication component specifically configured to: and after the WiFi communication component sends the screen projection picture data to display equipment, sending the occurrence time of the robbing to the display equipment.

9. A CIS audio transmission method, comprising:

establishing first CIS (contact information center) connections with a plurality of Bluetooth devices respectively by adopting first code stream data, receiving first CIS audios sent by the plurality of Bluetooth devices through the first CIS connections, and enabling the occupied amount of bandwidth resources corresponding to the first code stream data to be smaller than the preset resource amount;

mute a first CIS audio received over the first CIS connection;

receiving second code stream data sent by a target Bluetooth device through the first CIS connection, updating first code stream data connected with the first CIS into the second code stream data to establish a second CIS connection, receiving a second CIS audio sent by the target Bluetooth device through the second CIS connection, wherein the occupied amount of bandwidth resources corresponding to the second code stream data is larger than or equal to the preset resource amount;

and de-muting the second CIS audio transmitted through the second CIS connection, and controlling an audio playing component to play the second CIS audio.

10. A CIS audio transmission method, comprising:

establishing a first CIS connection with a display device by adopting first code stream data, and sending first CIS audio and second code stream data to the display device through the first CIS connection, wherein the occupied bandwidth resource amount corresponding to the first code stream data is less than a preset resource amount, and the occupied bandwidth resource amount corresponding to the second code stream data is greater than or equal to the preset resource amount;