CN219643972U

CN219643972U - Plug-and-play wireless intelligent audio/video receiving and transmitting system

Info

Publication number: CN219643972U
Application number: CN202223378057.4U
Authority: CN
Inventors: 蔡九顺; 黄文玲
Original assignee: Shenzhen Aoni Electronic Co ltd
Current assignee: Shenzhen Aoni Electronic Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-09-05
Anticipated expiration: 2032-12-15

Abstract

The utility model discloses a plug-and-play wireless intelligent audio/video receiving and transmitting system which comprises a computer, a wireless audio/video receiving and transmitting terminal, a wireless video receiving and transmitting terminal and three wireless audio receiving and transmitting terminals. The wireless audio/video receiving and transmitting terminal is directly plugged into the computer through a USB plug for plug and play. The wireless communication of Audio signals is realized through wireless pairing and interconnection of the first Audio LE-Audio2.4G modules, and the wireless communication is further combined with the 2.4G wireless technology based on the LE-Audio technology, so that three wireless Audio receiving and transmitting terminals can be dragged simultaneously by one wireless Audio and video receiving and transmitting terminal, and the simultaneous transmission of Audio signals is satisfied. The first 2.4G/5.8G radio frequency modules are in wireless pairing interconnection with the second 2.4G/5.8G radio frequency modules, so that wireless transmission of video is realized, and the requirements of the conference room in the wireless audio and video transmission field are greatly met.

Description

Plug-and-play wireless intelligent audio/video receiving and transmitting system

Technical Field

The utility model relates to the technical field of conference devices, in particular to a plug-and-play wireless intelligent audio/video receiving and transmitting system.

Background

In the original conference environment, the video terminals are all required to be connected with signals through a cable, namely, the video receiving position is limited by the video signal source position. Meanwhile, the video signal is an analog signal, the bandwidth is large, and the wireless transmission can hardly ensure high-efficiency and high-definition video.

With the development of digital television technology and wireless transmission technology, the digital application of conference audio-visual equipment becomes possible. In the display method, the technical breakthroughs in the application aspects of large screens, light weight and flat panel displays lead the application form of the television terminal to be light and flexible from huge thickness. Due to the portability of display terminals, the diversity and variability of video use requirements, the specificity of video application environments, and the like, there is a wide demand for video signal applications capable of flexibly and conveniently receiving video signal sources in a wireless connection manner within a certain area.

With the development of wireless communication technology, especially the continuous development and application of broadband digital wireless communication technology, the construction of a wireless conference system becomes a possible scheme, and the inventor considers the reliability of data transmission and the convenience of using the conference system to develop a plug-and-play wireless intelligent audio/video receiving and transmitting system.

Disclosure of Invention

In view of the above, the present utility model aims at the disadvantages of the prior art, and its main objective is to provide a plug-and-play wireless intelligent Audio/video transceiver system, which uses LE-Audio2.4G technology to realize wireless transmission of Audio; the wireless transmission of video is realized by using the 2.4G/5.8G radio frequency technology, and the requirements of the conference room wireless audio and video transmission field are greatly met.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a plug and play wireless intelligent audio/video receiving and transmitting system is characterized in that: comprising

A computer, a computer program and a computer program,

the wireless audio/video receiving and transmitting terminal is provided with a USB plug which is connected to the computer in a pluggable manner, the USB plug is connected with a HUB chip, the HUB chip is also respectively and electrically connected with a first audio LE-Audio2.4G module and a first image processing chip, and the first image processing chip is electrically connected with a first 2.4G/5.8G radio frequency module;

the wireless video receiving and transmitting terminal is provided with an HDMI interface used for being connected with a screen, the HDMI interface is connected with a second image processing chip, the second image processing chip is electrically connected with a second 2.4G/5.8G radio frequency module, and the second 2.4G/5.8G radio frequency module is in wireless pairing interconnection with the first 2.4G/5.8G radio frequency module; the second image processing chip is connected with the camera through the light sensing chip;

the three wireless audio receiving and transmitting terminals comprise a first wireless audio receiving and transmitting terminal, a second wireless audio receiving and transmitting terminal and a third wireless audio receiving and transmitting terminal; the three wireless audio receiving and transmitting terminals are respectively internally provided with a second audio LE-audio2.4G module, and each second audio LE-audio2.4G module is in wireless pairing interconnection with the first audio LE-audio2.4G module.

As a preferable scheme, three wireless audio receiving and transmitting terminals are respectively provided with an MIC array and a loudspeaker, wherein the MIC array is electrically connected with an audio processing chip, the loudspeaker is electrically connected with a power amplification chip, the power amplification chip is electrically connected with the audio processing chip, and the audio processing chip is electrically connected with a second audio LE-audio2.4G module.

As a preferable scheme, the wireless audio/video receiving and transmitting terminals are provided with no battery, and the three wireless audio receiving and transmitting terminals are provided with built-in batteries.

As a preferable scheme, three wireless audio transceiver terminal built-in batteries connect gradually chip, interface and the power adapter that charges charge, interface and the chip electricity that charges are connected in second audio LE-audio2.4G module.

As a preferable scheme, the second audio LE-audio2.4g module is electrically connected with a wireless audio receiving and transmitting terminal key.

As a preferable scheme, the first image processing chip is electrically connected with the first key.

As a preferable scheme, the first audio LE-audio2.4g module is electrically connected to the second key.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, in particular, according to the technical proposal,

because the wireless audio/video receiving and transmitting terminal is provided with the USB plug, the wireless audio/video receiving and transmitting terminal is directly plugged into a computer to realize plug and play. The HUB chip of the wireless audio/video receiving terminal realizes expansion of a USB interface, so that a plurality of different devices are connected; the wireless communication of Audio signals is realized through the wireless pairing interconnection of the first Audio LE-Audio2.4G module and the second Audio LE-Audio2.4G module, and the wireless communication of Audio signals is realized based on the combination of the LE-Audio technology and the 2.4G wireless technology, so that three wireless Audio receiving and transmitting terminals can be dragged simultaneously by one wireless Audio and video receiving and transmitting terminal, and the simultaneous transmission of Audio signals is satisfied. The first 2.4G/5.8G radio frequency module and the second 2.4G/5.8G radio frequency module are in wireless pairing interconnection, and the wireless transmission of video is realized by utilizing the 2.4G/5.8G radio frequency technology, so that the requirements of the conference room wireless audio and video transmission field are greatly met.

In order to more clearly illustrate the structural features and efficacy of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic diagram of a plug-and-play wireless intelligent audio/video transceiver system according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram of a wireless audio/video transceiver terminal according to an embodiment of the present utility model.

Fig. 3 is a schematic diagram of a wireless video transceiving terminal according to an embodiment of the present utility model.

Fig. 4 is a schematic diagram of a wireless audio transceiver terminal according to an embodiment of the present utility model.

Fig. 5 is a schematic diagram of an application example of a plug-and-play wireless intelligent audio/video transceiving system according to an embodiment of the present utility model.

The attached drawings are used for identifying and describing:

10. computer 20, wireless audio/video receiving and transmitting terminal

21. USB plug 22 and HUB chip

23. First audio LE-Audio2.4G module 24, first image processing chip

25. First 2.4G/5.8G radio frequency module 26, first key

27. Second key 30 and wireless video receiving and transmitting terminal

31. HDMI interface 32, second image processing chip

33. Second 2.4G/5.8G radio frequency module 34 and light sensing chip

35. Camera 40 and wireless audio receiving and transmitting terminal

401. First wireless audio transceiver terminal 402 and second wireless audio transceiver terminal

403. Third wireless audio transceiver terminal 41, second audio LE-Audio2.4G module

42. MIC array 43, horn

44. Audio processing chip 45 and power amplifier chip

46. Battery 461, charging chip

462. Charging interface 463 and charging power adapter

47. Wireless audio transceiver terminal button 50, screen.

Detailed Description

Referring to fig. 1 to 5, which show specific structures of a preferred embodiment of the present utility model, a plug-and-play wireless intelligent audio/video transceiver system includes a computer 10, a wireless audio/video transceiver terminal 20, a wireless video transceiver terminal 30 and three wireless audio transceiver terminals 40.

The computer 10 is a notebook computer 10, and can be conveniently placed on a conference table. The computer 10 is provided with a conference program, such as a Tencet conference or some other conference application, to facilitate the rapid network conference of participants.

As shown in fig. 2, a wireless audio/video transceiver terminal 20 is a small-sized transceiver. The wireless audio/video receiving and transmitting terminal 20 is provided with no battery, and is powered by the inserted computer 10 equipment. The wireless audio/video transceiver terminal 20 has a USB plug 21, and is connected to the computer 10 in a pluggable manner. The USB plug 21 is connected with the HUB chip 22, and the USB2.0 HUB chip 22 can select GL850G of taiwan brand (GENESYS) for example, so that the USB2.0 can be expanded in a HUB mode, one USB interface can be expanded into a plurality of USB interfaces, and the problem that the existing USB single serial port cannot meet the requirement of simultaneously being compatible with different devices to use the interface is solved.

The HUB chip 22 is electrically connected to the first audio LE-audio2.4g module 23 and the first image processing chip 24, respectively, and the first image processing chip 24 is electrically connected to the first 2.4G/5.8G radio frequency module 25.

The first Audio LE-audio2.4g module 23 is based on a combination of an LE Audio technology and a 2.4G wireless technology, and the 2.4G wireless technology works in a global application-free ISM channel 2400M-2483M range, so that a startup automatic frequency sweep function is realized, 50 working channels are provided in total, 50 users can work simultaneously in the same occasion at the same time, and manual coordination and channel configuration of the users are not required. Meanwhile, according to cost consideration, a plurality of types of wireless modules within 50 meters, 150 meters and 600 meters can be selected. The receiving unit and the remote controller unit have a 1-key automatic code matching function, the digital address is coded, the capacity is large, and the address repetition is avoided.

LE Audio is a new generation Bluetooth Audio transmission protocol, and is based on low-power consumption Bluetooth BLE wireless communication, and is mainly characterized in that: 1. ultra-low power consumption; 2. a brand new high-tone quality low-power consumption audio decoder LC3; 3. LE synchronous channel; 4. supporting multi-stream audio; 5. supporting broadcast audio technology.

LC3 is a new generation of high-efficiency bluetooth Audio codec available in LE Audio profiles, which is capable of encoding speech and music at multiple bit rates and can be added to any bluetooth Audio profile. LC3 is based on perceptual coding techniques, in particular low-delay discrete cosine transform, time domain noise shaping, frequency domain noise shaping and long-term post-filters, compared to the SBC, AAC and aptX codecs of Classic Audio, which greatly enhances sound quality even at a 50% reduction in bit rate. The low complexity of the LC3 codec, and the low frame duration, enables lower bluetooth transmission delay, providing better wireless experience for the user.

The first image processing chip 24 may be, for example, an AW6120 and an AW6121 special image processing chip with low cost and high performance, which are electronic (AWINIC) by using Shanghai ai, an Image Signal Processing (ISP) SOC chip with a 32-bit RISC processor is integrated in the product, a camera 35 with a RAW image format supporting a MIPI interface below 5M (including 5M) is provided, after a series of special image processing, a high-quality YUV signal is obtained, and the interface outputs support MIPI (AW 6120) and DVP (AW 6121) respectively.

The performance main advantages of the first image processing chips 24AW6120 and AW6121 include:

first, the overall professional ISP algorithm: the SOC camera 35 (including two parts of sensor and ISP) on the market has a non-optimal ISP part performance, because the ISP is integrated into a special process of the sensor, many functions of image signal processing are simplified, while a special ISP chip adopts a more advanced process and a more specialized and complex algorithm, so that the overall image processing effect is more prominent, the shot picture quality is excellent, especially under low illumination and night light, image distortion and halation of other mobile phones can be avoided, and the weak light performance and noise reduction effect are enhanced.

Second,: matrix automatic white balance technique (Matrix-AWB): the algorithm can be used for fitting common light source environments such as sunlight, incandescent lamps, fluorescent lamps and the like to a high degree, flexibly configuring corresponding register parameters, fitting imaging characteristics of various sensors to a high degree, obtaining excellent white balance effect, and being far superior to the three-color temperature white balance technology commonly used in the market under the complex light source condition, and capable of better restoring the real scene.

Third,: multicolor Lens compensation algorithm (MCT-Lens imaging): aiming at different color temperatures, the aperture effect of the lens can be better compensated under various scenes, so that the brightness of the whole picture is more balanced.

Fourth,: multi-color temperature color matrix correction algorithm (MCT-CMX): aiming at different color temperatures, the color of the picture is plump, more details can be brought, and the display effect is good in definition.

Fifth,: low power consumption design and power consumption index: excellent low-power design and power management, dynamic power consumption of only 100mW, less than 1/3 of that of the product of the manufacturer of the beauty day, and static current of only 260uA.

The chip is internally provided with 32-bit micro-processing, adopts software and hardware cooperative control to form 3A (automatic exposure, automatic white balance and automatic focusing), has larger flexibility, can adopt local adjustment, supports new camera 35 products, and has obvious improvement on performance.

The first 2.4G/5.8G radio frequency module 25 is a 2.4G/5.8G dual-frequency dual-2T 2R routing gateway HLK-RM28E, and the transmission rate is up to 1200m+; the main frequency of the HLK-RM28E module is 580MHz, the transmission rate can reach 300M+900M, and the effective communication distance is 100 meters, and 2.4G2T2R and 5.8G 2T2R are supported. Meanwhile, 2 external 2.4G high-gain antennas and 2 5.8G high-gain antennas are supported, so that the transmission rate of the product is further improved, the signal stability is enhanced, the penetrability is improved, and the delay is reduced.

As shown in fig. 3, the wireless video transceiver terminal 30 has an HDMI interface 31 for connecting with the screen 50, the HDMI interface 31 is connected with a second image processing chip 32, the second image processing chip 32 is electrically connected with a second 2.4G/5.8G rf module 33, and the second 2.4G/5.8G rf module 33 is in wireless pairing interconnection with the first 2.4G/5.8G rf module 25; the second image processing chip 32 is connected to a camera 35 through a light sensing chip 34. The second image processing chip 32 may be the same type as the first image processing chip 24 described above; the second 2.4G/5.8G rf module 33 may be the same type as the first 2.4G/5.8G rf module 25.

As shown in fig. 4, the three wireless audio transceiving terminals 40 include a first wireless audio transceiving terminal 401, a second wireless audio transceiving terminal 402, and a third wireless audio transceiving terminal 403. The three wireless audio transceiver terminals 40 are respectively internally provided with a second audio LE-audio2.4G module 41, and each second audio LE-audio2.4G module 41 is in wireless pairing interconnection with the first audio LE-audio2.4G module 23. The second audio LE-audio2.4G mode can be the same as the first audio LE-audio2.4G mode.

Furthermore, the three wireless audio transceiver terminals 40 are respectively provided with an MIC array 42 and a loudspeaker 43, the MIC array 42 is electrically connected with an audio processing chip 44, the loudspeaker 43 is electrically connected with a power amplification chip 45, the power amplification chip 45 is electrically connected with the audio processing chip 44, and the audio processing chip 44 is electrically connected with a second audio LE-audio2.4g module 41.

The MIC array 42 forms an omnidirectional microphone function of the wireless audio receiving and transmitting terminal 40, obtains a better pickup effect, uses the microphone array to perform space-time processing on collected sound signals in different space directions, realizes functions of noise suppression, reverberation removal, human voice interference suppression, sound source direction finding, sound source tracking, array gain and the like, and further improves the voice quality of the whole conference room.

The audio processing chip 44 may perform 3A processing on audio during real-time audio/video call or live broadcast, and mainly includes AEC (Acoustic Echo Cancelling, echo cancellation), AGC (Automatic Gain Control ) and ANS (Active Noise Control, noise reduction), so as to improve call or live broadcast quality and user experience.

AEC (echo cancellation): the collected audio data is filtered to reduce echo in the audio.

AGC (automatic gain control): after the function is started, the SDK can automatically adjust the volume of the microphone, adapt to near-far pickup and keep the volume stable.

ANS (noise reduction): background noise in the sound is identified and eliminated, and after the function is started, the voice of a person can be clearer.

In addition, the three wireless audio transceiver terminals 40 are provided with the battery 46, and are directly connected with the wireless audio transceiver terminals 20 in a wireless manner without communication wires. The three wireless audio transceiver terminals 40 are sequentially connected with a charging chip 461, a charging interface 462 and a charging power adapter 463 by the built-in batteries 46, and the charging interface 462 and the charging chip 461 are electrically connected with the second audio LE-audio2.4g module 41. Thus, when the battery 46 is too low, the charging power adapter 463 may be directly employed to provide power.

The second audio LE-audio2.4g module 41 is electrically connected to a wireless audio transceiver terminal key 47, which may include a start power key, a speaker 43 volume up, down, and echo cancellation keys.

As shown in fig. 2, the first image processing chip 24 is electrically connected to a first key 26, and the first key 26 can be used for controlling the first 2.4G/5.8G rf module 25 and the second 2.4G/5.8G rf module 33 to be wirelessly interconnected, for example. The first audio LE-audio2.4g module 23 is electrically connected to a second key 27, and the second key 27 can control, for example, the first audio LE-audio2.4g module 23 to be interconnected with the second audio LE-audio2.4g module 41 on each microphone.

The utility model relates to a plug-and-play wireless intelligent audio/video receiving and transmitting system, which comprises the following using method:

as shown in fig. 1 to 5, the wireless audio/video transceiver terminal 20 is plugged into the USB interface of the computer 10 for plug and play. Pressing the first key 26 of the wireless audio/video transceiver terminal 20 to wirelessly interconnect the wireless audio/video transceiver terminal 20 and the wireless video transceiver terminal 30; the second key 27 of the wireless audio/video transceiver terminal 20 is pressed to wirelessly interconnect the wireless audio/video transceiver terminal 20 with the three wireless audio transceiver terminals 40, thereby purchasing a wirelessly connected intelligent audio/video transceiver system.

When a conference starts, three wireless Audio receiving and transmitting terminals 40 are placed on a conference table at a distance, the three wireless Audio receiving and transmitting terminals 40 pick up the sound of a participant through an MIC array 42 thereof, an analog signal is converted into a digital signal through an Audio processing chip 44, the digital signal is transmitted to a second Audio LE-Audio2.4G module for encoding after noise reduction processing, a voice signal is transmitted to a first Audio LE-Audio2.4G module through the second Audio LE-Audio2.4G module, the first Audio LE-Audio2.4G module is transmitted to a computer 10 through a HUB chip 22 after decoding, the computer 10 can upload the sound of the conference, and therefore the other party of the conference can smoothly receive the sound of the conference.

Meanwhile, after the sound picked up by the MIC array 42 and passing through the audio processing chip 44, the sound is directly transmitted to the power amplification chip 45, and then is played on site by the loudspeaker 43.

Meanwhile, the camera 35 records a video of the conference room, the image obtained by the camera 35 passes through the light sensing chip 34 and the first image processing chip 24 to obtain a digital signal of the video, the digital signal is wirelessly transmitted to the first 2.4G/5.8G radio frequency module 25 by the second 2.4G/5.8G radio frequency module 33, the digital signal of the video received by the first 2.4G/5.8G radio frequency module 25 is processed by the first image processing chip 24, and is transmitted to the computer 10 through the HUB chip 22, and the computer 10 can upload to the Internet, so that the other party of the conference can smoothly receive the video of the conference.

Meanwhile, the conference video shot by the camera 35 is directly transmitted to the screen 50 through the HDMI interface 31 after passing through the light sensing chip 34 and the second image processing chip 32. The image of the second image processing chip 32 is firstly transmitted to the first 2.4G/5.8G radio frequency module 25, the first 2.4G/5.8G radio frequency module 25 is transmitted to the first image processing chip 24 and then transmitted to the computer PC, meanwhile, the first image processing chip 24 obtains the screen image from the computer 10, the screen image is transmitted to the first 2.4G/5.8G radio frequency module 25 from the first image processing chip 24, the first 2.4G/5.8G radio frequency module 25 is transmitted wirelessly, the screen image is transmitted to the second 2.4G/5.8G radio frequency module 33, the second 2.4G/5.8G radio frequency module 33 is transmitted to the second image processing chip 32 after being decoded, and then transmitted to the screen 50 from the HDMI, and the image of the light sensing chip 34 is not directly transmitted to the screen 50.

Because the conference system of the utility model supports two-way communication, video and audio of the far end participating in the conference can be respectively transmitted to the local for playing, and the specific flow is as follows:

video playing: the computer 10 receives a remote video signal from the internet or the cloud, transmits the remote video signal to the first image processing chip 24 through the HUB chip 22 for compression encoding, transmits the remote video signal to the second 2.4G/5.8G radio frequency module 33 through the first 2.4G/5.8G radio frequency module 25, decodes the remote video signal through the second image processing chip 32, and transmits the remote video signal to the screen 50 for playing through the HDMI interface 31.

And (3) audio playing: the computer PC receives remote Audio signals from the Internet or the cloud, transmits the remote Audio signals to the first Audio LE-Audio2.4G module through the HUB chip 22 for LC3 coding, wirelessly transmits the remote Audio signals to the second Audio LE-Audio2.4G module for LC3 decoding, then carries out noise reduction treatment on the Audio signals through the Audio processing chip 44, enlarges and restores the signals through the power amplification chip 45, and finally plays the signals through the loudspeaker 43.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model are still within the scope of the technical solutions of the present utility model.

Claims

1. A plug and play wireless intelligent audio/video receiving and transmitting system is characterized in that: comprising

A computer (10),

the wireless audio/video receiving and transmitting terminal (20) is provided with a USB plug (21), the wireless audio/video receiving and transmitting terminal (20) is connected to the computer (10) in a pluggable mode, the USB plug (21) is connected with a HUB chip (22), the HUB chip (22) is further electrically connected with a first audio LE-Audio2.4G module (23) and a first image processing chip (24) respectively, and the first image processing chip (24) is electrically connected with a first 2.4G/5.8G radio frequency module (25);

a wireless video transceiver terminal (30), wherein the wireless video transceiver terminal (30) is provided with an HDMI (high-definition multimedia interface) interface (31) for connecting a screen (50), the HDMI interface (31) is connected with a second image processing chip (32), the second image processing chip (32) is electrically connected with a second 2.4G/5.8G radio frequency module (33), and the second 2.4G/5.8G radio frequency module (33) is in wireless pairing interconnection with the first 2.4G/5.8G radio frequency module (25); the second image processing chip (32) is connected with the camera (35) through the light sensing chip (34);

at least three wireless audio receiving and transmitting terminals (40) comprising a first wireless audio receiving and transmitting terminal (401), a second wireless audio receiving and transmitting terminal (402) and a third wireless audio receiving and transmitting terminal (403); the three wireless audio receiving and transmitting terminals (40) are respectively internally provided with a second audio LE-audio2.4G module (41), and each second audio LE-audio2.4G module (41) is in wireless pairing interconnection with the first audio LE-audio2.4G module (23).

2. The plug and play wireless intelligent audio-video transceiving system according to claim 1, wherein: three wireless audio transceiver terminals (40) are respectively provided with an MIC array (42) and a loudspeaker (43), wherein the MIC array (42) is electrically connected with an audio processing chip (44), the loudspeaker (43) is electrically connected with a power amplification chip (45), the power amplification chip (45) is electrically connected with the audio processing chip (44), and the audio processing chip (44) is electrically connected with a second audio LE-Audio2.4G module (41).

3. The plug and play wireless intelligent audio-video transceiving system according to claim 1, wherein: the wireless audio/video receiving and transmitting terminal (20) is provided with no battery (46), and the three wireless audio receiving and transmitting terminals (40) are internally provided with the battery (46).

4. The plug and play wireless intelligent audio-video transceiving system according to claim 1, wherein: three wireless audio transceiver terminals (40) built-in batteries (46) connect gradually chip (461), interface (462) and charging source adapter (463) charge, interface (462) and chip (461) that charges are connected in second audio LE-audio2.4G module (41) electricity.

5. The plug and play wireless intelligent audio-video transceiving system according to claim 1, wherein: the second audio LE-Audio2.4G module (41) is electrically connected with a wireless audio receiving and transmitting terminal key (47).

6. The plug and play wireless intelligent audio-video transceiving system according to claim 1, wherein: the first image processing chip (24) is electrically connected with the first key (26).

7. The plug and play wireless intelligent audio-video transceiving system according to claim 1, wherein: the first audio LE-Audio2.4G module (23) is electrically connected with a second key (27).