Host device, wireless Dongle device and conference system

Abstract

The invention discloses host equipment, wireless Dongle equipment and a conference system, and the host equipment comprises a communication interface which is provided with a first USB pin group and a first audio pin group; the controller is electrically connected with the communication interface, and the controller is configured to judge whether the communication interface is inserted into wireless Dongle equipment or not according to the identification information input by the first USB pin group; the controller is further configured to transmit a USB signal through the first USB pin group and transmit an audio signal through the first audio pin group when the wireless Dongle equipment is inserted into the communication interface. The host device, the wireless Dongle device and the conference system provided by the invention have the advantages of facilitating user operation, reducing the opening of the host device, saving a detection step and improving the running speed of the device.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of wireless audio transmission, and in particular to a host device, a wireless Dongle device and a conference system. BACKGROUND

[0002] Under the background of rapid development today, the demand for remote audio and video conferencing of enterprises presents an increasing trend. Video conference system, also known as conference television system, is a system device that can realize instant and interactive communication between individuals or teams in different locations. Through the cooperation of transmission lines and multimedia devices, the system can realize real-time intercommunication of sound, image and file data, thus meeting the demand for remote conference.

[0003] The related art video conference system includes a host device, a wireless Dongle device, a microphone and a loudspeaker. The wireless Dongle device can deliver the audio signal collected by the microphone to the host device, and the wireless Dongle device can also deliver the audio signal output by the host device to the loudspeaker.

[0004] However, the connection between the host device and the wireless Dongle device of the above-mentioned video conference system is cumbersome and inconvenient for user operation. SUMMARY

[0005] Embodiments of the present application aim to provide a host device, a wireless Dongle device and a conference system, which can solve the problem of cumbersome connection between the host device and the wireless Dongle device of the video conference system, and inconvenient user operation.

[0006] An aspect of embodiments of the present application provides a host device, comprising: a communication interface having a first USB pin group and a first audio pin group; a controller electrically connected with the communication interface, and the controller is configured to judge whether the communication interface is inserted with a wireless Dongle device according to identification information input by the first USB pin group; the controller is further configured to transmit a USB signal through the first USB pin group and transmit an audio signal through the first audio pin group when the communication interface is inserted with the wireless Dongle device.

[0007] The host device provided in the embodiments of the present application is provided with a communication interface and a controller, wherein the communication interface transmits not only a communication signal through a first USB pin but also an audio signal through a first audio pin, and the controller can determine whether the communication interface is connected to a wireless Dongle device according to identification information input by the first USB pin. Compared with the related art in which a communication signal is transmitted through a USB interface and an audio signal is transmitted through an audio interface, resulting in the need for a user to plug in two interfaces when using, the host device provided in the embodiments of the present application has the advantages of facilitating user operation and reducing the openings of the host device, because the user only needs to plug in a wireless Dongle device into one communication interface when using. In addition, compared with the related art in which it is necessary to detect whether both interfaces are plugged into a device, the host device provided in the embodiments of the present application only needs to detect whether one interface is plugged into a device, thereby saving one detection step and having the advantage of improving the running speed of the device.

[0008] Optionally, the communication interface is a USB-A, and the first audio pin group transmits an I2S signal.

[0009] Through the above scheme, the characteristics of the I2S signal are utilized to realize the communication between the plurality of pickups and the plurality of loudspeakers and the host device, which facilitates the use of the host device in a large conference room.

[0010] Optionally, the first audio pin group includes an I2S_SCLK pin, an I2S_LRCK pin, an I2S_SDIN pin, and an I2S_SDOUT pin; the I2S_SCLK pin transmits a bit clock signal; the I2S_LRCK pin transmits a frame clock signal; the I2S_SDIN pin transmits an audio input signal; and the I2S_SDOUT transmits an audio output signal.

[0011] Through the above scheme, the transmission of the I2S signal is realized through the first audio pin group.

[0012] Optionally, the communication interface further has a first ground pin group, the first ground pin group includes at least two ground pins, and at least one of the ground pins is arranged between the first USB pin group and the first audio pin group.

[0013] Through the above scheme, the ground pin is utilized to avoid the mutual interference of the I2S signal and the USB signal.

[0014] Optionally, the communication interface is a USB-C, the communication interface further has a first screen transmission pin group, and the controller is further configured to transmit a screen transmission signal through the first screen transmission pin group when the communication interface is plugged into a wireless Dongle device; and the first audio pin group transmits a differential audio signal.

[0015] Through the scheme, the audio signal and the video signal are compatible by using three empty pins of the related USB-C.

[0016] Optionally, the differential audio signal is an SPDIF signal; the first audio pin group includes an SPDIF_IN pin and an SPDIF_OUT pin, the SPDIF_IN pin transmits an audio input signal, and the SPDIF_OUT transmits an audio output signal.

[0017] Through the scheme, the stable transmission of the audio signal is realized by using the characteristics of the SPDIF differential signal.

[0018] Another aspect of the embodiment of the application further provides a wireless Dongle device, including a communication port and a wireless module; the communication port is configured to be plugged into communication with the host device according to any one of claims 1-6, and the communication port has a second USB pin group and a second audio pin group; the second USB pin group is configured to be electrically connected between the wireless module and the first USB pin group of the host device, and the wireless Dongle device outputs identification information to the controller of the host device through the second USB pin group and the first USB pin group; the second audio pin group is configured to be electrically connected between the wireless module and the first audio pin group of the host device; when the communication port of the wireless Dongle device is plugged into the communication interface of the host device, the wireless Dongle device transmits a USB signal through the second USB pin group and the first USB pin group, and transmits an audio signal through the first audio pin group and the second audio pin group.

[0019] The wireless Dongle device provided by the embodiment of the application has the advantages that the communication port is not only used to transmit a communication signal through the second USB pin, but also used to transmit an audio signal through the second audio pin. Compared with the related art, the wireless Dongle device has two interfaces, and the user needs to plug in the two interfaces when using. The wireless Dongle device provided by the embodiment of the application has the advantages that the user only needs to plug in one communication interface when using, and the user operation is facilitated and the opening of the host device is reduced. In addition, compared with the related art, the host device provided by the embodiment of the application only needs to detect whether one interface is plugged into the device, thereby saving one detection step and improving the running speed of the device.

[0020] Optionally, the communication port is a USB-A, and the second audio pin group transmits an I2S signal.

[0021] Or, the communication port is a USB-C, the communication port also has a second screen transmission pin group, the second screen transmission pin group transmits a screen transmission signal, and the second audio pin group transmits a differential signal.

[0022] Another aspect of the embodiments of the present application also provides a conference system, comprising a sound pickup device, a host device as described above, and a wireless Dongle device as described above, the host device communicates with the sound pickup device through the wireless Dongle device.

[0023] The conference system provided by the embodiments of the present application has the advantages of convenient user operation, reduction of the opening of the host device, saving of one detection step, and improvement of the running speed of the device. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0025] Figure 1 A schematic diagram of a conference system provided by the embodiments of the present application;

[0026] Figure 2 A schematic diagram of another conference system provided by the embodiments of the present application;

[0027] Explanation of reference signs:

[0028] 1000, host device;

[0029] 100, communication interface;

[0030] 200, controller;

[0031] 2000, wireless Dongle device;

[0032] 2100, communication port; 2200, wireless module;

[0033] 3000, sound pickup device;

[0034] 3100, transceiver; 3200, processor; 3300, sound pickup; 3400, power amplifier; 3500, loudspeaker.

[0035] 4000, screen transmission device. DETAILED DESCRIPTION

[0036] As described in the background, the related art video conference system has the problem of complicated connection between the host device and the wireless Dongle device, which is inconvenient for user operation. It is found through research that the reason for this problem is that the host device has a USB (Universal Serial Bus) interface and an audio interface, the USB interface can transmit USB signals, and the audio interface can transmit audio signals. The wireless Dongle device has two connection ends. When the user uses it, the two connection ends of the wireless Dongle device need to be respectively plugged into the USB interface and the audio interface, which causes the user operation to be inconvenient. In addition, the controller of the host device needs to detect the connection status of the USB interface and the audio interface respectively, which causes the running speed of the controller to be reduced.

[0037] In view of the above technical problems, the embodiments of the present application provide a host device, a wireless Dongle device and a conference system, which transmit USB signals and audio signals through the same interface, so as to facilitate user operation and save detection steps.

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments.

[0039] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0040] Figure 1 A schematic diagram of a conference system provided by the embodiments of the present application is shown in FIG. 1. Referring to FIG. 1, the conference system provided by the embodiments of the present application can include a sound pickup device 3000, a host device 1000 and a wireless Dongle device 2000, wherein the host device 1000 communicates with the sound pickup device 3000 through the wireless Dongle device 2000. Figure 1

[0041] Specifically, the sound pickup device 3000 can include a transceiver 3100, a processor 3200, a sound pickup device 3300 and a speaker 3400 connected electrically. The sound pickup device 3300 can pick up external sound and convert the external sound into an audio electrical signal to output to the processor 3200. The processor 3200 can process the audio electrical signal and output an audio input signal to the wireless Dongle device 2000 through the transceiver 3100.

[0042] ​The wireless dongle device 2000 can include a communication port 2100 and a wireless module 2200. The communication port 2100 can receive an audio input signal through the wireless module 2200 and output the audio input signal to the host device 1000. The host device 1000 includes a communication interface 100 and a controller 200. The communication interface 100 can be plugged with the communication port 2100 of the wireless dongle device 2000, and the controller 200 can receive the audio input signal output by the communication port 2100 of the wireless dongle device 2000 through the communication interface 100 and process the audio input signal (such as decoding, etc.).

[0043] In addition, the audio output signal can be output to the transceiver 3100 of the sound collecting device 3000 through the controller 200, the communication interface 100 of the host device 1000, and the communication port 2100, the wireless module 2200 of the wireless dongle device 2000. The transceiver 3100 of the sound collecting device 3000 outputs the audio output signal to the processor 3200. The processor 3200 can process the audio output signal (such as filtering, amplification) and output it to the speaker 3400. The speaker 3400 receives the signal processed by the processor 3200 and converts it into sound to the outside. Optionally, the antenna of the wireless module 2200 of the wireless dongle device 2000 can be a PCB antenna, which is convenient for debugging, simple in structure, and low in cost.

[0044] With reference to the foregoing Figure 1 The communication interface 100 of the host device 1000 provided by the embodiments of the present application can have a first USB pin group. The first USB pin group can include a DM pin and a DP pin. The DM pin can transmit a DM signal (Data Minus), and the DP pin can transmit a DP signal (Data Positive). The DM signal and the DP signal are a pair of differential signals. This differential signal transmission method can improve the anti-interference ability of the signal and ensure reliable transmission of data.

[0045] In addition, the communication port 2100 of the wireless dongle device 2000 provided by the embodiments of the present application can have a second USB pin group. The second USB pin group can also have a DM pin for transmitting a DM signal and a DP pin for transmitting a DP signal. When the communication interface 100 of the host device 1000 is plugged with the communication port 2100 of the wireless dongle device 2000, the second USB pin group is electrically connected with the first USB pin group. The DM pin of the second USB pin group is electrically connected with the DM pin of the first USB pin group, and the DP pin of the second USB pin group is electrically connected with the DP pin of the first USB pin group.

[0046] The host device 1000 can transmit USB signals with the differential signals DM and DP. The USB signals can include control signals output by the controller 200, identification information output by the wireless Dongle device 2000, and the like.

[0047] In addition, in order to determine whether the communication interface 100 is inserted into the communication port 2100 of the wireless Dongle device 2000, the wireless Dongle device 2000 can transmit identification information to the controller 200 of the host device 1000 through the second USB pin group and the first USB pin group. The controller 200 of the host device 1000 can determine whether the communication interface 100 is inserted into the wireless Dongle device 2000 according to the identification information.

[0048] The identification information can be VID (Vender ID) information and PID (Product ID) information. The PID and VID are unique identifiers for identifying the wireless Dongle device 2000. The VID is applied for by a vendor to the USB-IF (Implementers Forum) and is a unique identifier for the vendor. The PID (Product ID) is used to identify different products produced by the same vendor.

[0049] Alternatively, the identification information can be resistance change information of the DM pin and the DP pin of the first USB pin group. For example, when the communication interface 100 of the host device 1000 is not inserted into the wireless Dongle device 2000, the DM pin and the DP pin are pulled down to a low level by a 15K resistor. When the communication interface 100 of the host device 1000 is inserted into the wireless Dongle device 2000, one of the DM pin and the DP pin is at a high level. This information is reported to the controller 200 as identification information, thereby informing that the wireless Dongle device 2000 has been inserted.

[0050] Continuing to refer to Figure 1The communication interface 100 provided in the embodiments of the present application can also have a first audio pin group. When the communication interface 100 is inserted into the wireless Dongle device 2000, the controller 200 can not only transmit the USB signal through the first USB pin group, but also transmit the audio signal through the first audio pin group. In this way, compared with the related art in which the communication signal is transmitted through the USB interface and the audio signal is transmitted through the audio interface, resulting in the need for the user to plug in two interfaces when using, the host device 1000 provided in the embodiments of the present application can be inserted into one communication interface 100 when using, which has the advantages of facilitating user operation and reducing the opening of the host device 1000. In addition, compared with the related art in which it is necessary to detect whether both interfaces are inserted into the device, the host device 1000 provided in the embodiments of the present application only needs to detect whether one interface is inserted into the device, thereby saving one detection step and having the advantage of improving the running speed of the device.

[0051] When the conference system is applied in a large conference room, the host device 1000 needs to communicate with multiple microphones 3300 and multiple speakers 3400, and if the host device 1000 and the extension microphone device 3000 realize the transmission of the audio through the left and right channel signals, there will be the disadvantages of complicated system control, slow operation, obvious delay and the like.

[0052] I2S (Inter-IC Sound) is a bus standard formulated for the transmission of audio data between digital audio devices (such as CD players, digital sound effect processors, digital television sound systems). It adopts the design of transmitting clock and data signals along independent wires, and by separating the data and clock signals, it avoids the distortion induced by time difference, thereby saving the user the cost of purchasing professional equipment to resist audio jitter.

[0053] By using the characteristics of I2S, in order to adapt to multiple microphones 3300 and multiple speakers 3400, it is referred to Figure 1 The communication interface 100 of the host device 1000 provided in the embodiments of the present application can be a USB-A, and the first audio pin group can transmit the I2S signal.

[0054] Specifically, the relevant USB-A interface has 9 pins, and the relevant USB-A interface is changed to save costs. The communication interface 100 can have 9 pins. Among them, the first audio pin group can occupy 4 of the 9 pins, which are respectively: I2S_SCLK (Serial Clock, serial clock) pin, I2S_LRCK (Left-Right Clock, frame clock, used to switch left and right channel data) pin, I2S_SDIN (Serial Data Input, serial data input) pin, I2S_SDOUT (Serial Data Output, serial data output) pin. Among them, I2S_SCLK transmits bit clock signal; I2S_LRCK transmits frame clock signal; I2S_SDIN pin transmits audio input signal; I2S_SDOUT transmits audio output signal. In addition, the first USB pin group can occupy 2 of the 9 pins, which are respectively: DM pin and DP pin.

[0055] Correspondingly, the communication port 2100 of the wireless Dongle device 2000 can be a USB-A, and the second audio pin group transmits I2S signals. The communication port 2100 can have 9 pins. Among them, the second audio pin group can occupy 4 of the 9 pins, which are respectively: I2S_SCLK pin, I2S_LRCK pin, I2S_SDIN pin, I2S_SDOUT pin. Among them, I2S_SCLK transmits bit clock signal; I2S_LRCK transmits frame clock signal; I2S_SDIN pin transmits audio input signal; I2S_SDOUT transmits audio output signal.

[0056] Among them, when the communication port 2100 of the wireless Dongle device 2000 and the communication interface 100 of the host device 1000 are connected, the I2S_SCLK pin of the second audio pin group and the I2S_SCLK pin of the first audio pin group are electrically connected, the I2S_LRCK pin of the second audio pin group and the I2S_LRCK pin of the first audio pin group are electrically connected, the I2S_SDIN pin of the second audio pin group and the I2S_SDIN pin of the first audio pin group are electrically connected, and the I2S_SDOUT pin of the second audio pin group and the I2S_SDOUT pin of the first audio pin group are electrically connected.

[0057] In addition, the second USB pin group can occupy 2 of the 9 pins, which are DM pin and DP pin. When the communication port 2100 of the wireless Dongle device 2000 and the communication interface 100 of the host device 1000 are connected, the DM pin of the second USB pin group and the DM pin of the first USB pin group are electrically connected, and the DP pin of the second USB pin group and the DP pin of the first USB pin group are electrically connected.

[0058] In addition, the communication interface 100 of the host device 1000 can further have a first power supply pin. The communication port 2100 of the wireless Dongle device 2000 can further have a second power supply pin. When the communication port 2100 of the wireless Dongle device 2000 is connected with the communication interface 100 of the host device 1000, the second power supply pin is electrically connected with the first power supply pin, so as to supply power to the wireless Dongle device 2000 by using the power supply of the host device 1000.

[0059] In addition, the communication interface 100 of the host device 1000 can further have a first ground pin group. The first ground pin group can include two ground pins, at least one of which can be grounded and can be arranged between the first USB pin group and the first audio pin group, so as to shield the signal interference between the first audio pin group and the first USB pin group and realize reliable communication.

[0060] Correspondingly, the communication port 2100 of the wireless Dongle device 2000 can further have a second ground pin group. The second ground pin group can include two ground pins, at least one of which can be grounded and can be arranged between the second USB pin group and the second audio pin group, so as to shield the signal interference between the second audio pin group and the second USB pin group and realize reliable communication.

[0061] The related USB-C interface with the screen transmission pin has three empty pins. Two of the three empty pins can be defined as differential audio pins, so that the audio signal and the video signal can be compatible into the design of the USB-C.

[0062] Therefore, with reference to Figure 2 The conference system provided by the embodiments of the present application can further include a screen transmission device 4000, which can communicate with the host device 1000 through the wireless Dongle device 2000. The communication interface 100 of the host device 1000 can have a first screen transmission pin group. Correspondingly, the communication port 2100 of the wireless Dongle device 2000 can have a second screen transmission pin group. When the communication interface 100 is inserted into the wireless Dongle device 2000, the controller 200 can transmit screen transmission signals between the host device 1000 and the screen transmission device 4000 through the first screen transmission pin group and the second screen transmission pin group.

[0063] The screen transmission signal can be a DP (Display Port) signal, and the first screen transmission pin group and the second screen transmission pin group can each include an AUX+ (audio input) pin and an AUX- (audio output) pin. When the communication interface 100 of the host device 1000 is in communication with the communication port 2100 of the wireless Dongle device 2000, the AUX+ pin of the first screen transmission pin group is electrically connected to the AUX+ pin of the second screen transmission pin group, and the AUX- pin of the second screen transmission pin group is electrically connected to the AUX- pin of the second screen transmission pin group.

[0064] In addition, the communication interface 100 of the host device 1000 and the communication port 2100 of the wireless Dongle device 2000 can each be configured with a CC pin. That is, the communication interface 100 of the host device 1000 is a USB-C, and the communication port 2100 of the wireless Dongle device 2000 is a USB-C.

[0065] In addition, the first audio pin group transmits a differential audio signal. Optionally, the differential audio signal can be an SPDIF signal. The first audio pin group can include an SPDIF_IN pin and an SPDIF_OUT pin, the SPDIF_IN pin can transmit an audio input signal; and the SPDIF_OUT can transmit an audio output signal.

[0066] SPDIF (Sony / Philips Digital Interconnect Format) is a digital audio interface protocol jointly developed by Sony and Philips. It is mainly used for the transmission of digital audio. In terms of transmission mode, SPDIF is divided into output (SPDIF OUT) and input (SPDIF IN). SPDIF signals can be divided into coaxial and optical fiber from the transmission medium. Generally speaking, short-distance transmission recommends the use of coaxial, because optical fiber needs to be converted twice from optical to electrical signals.

[0067] Wherein, the terms such as "up", "down", etc. are used to describe the relative position relationship of each structure in the drawing, which is only for the convenience of clear description, and is not used to limit the scope of the application. The change or adjustment of the relative relationship is also considered as the scope of the application without substantial change of the technical content.

[0068] It should be noted that in the present application, unless specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact or indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0069] In addition, in the present application, unless specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0070] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A host device, characterized by include: A communication interface having a first USB pin group and a first audio pin group; A controller is electrically connected to the communication interface, and the controller is configured to determine whether the communication interface is inserted into a wireless dongle device based on identification information input by the first USB pin group; the controller is further configured to transmit USB signals through the first USB pin group and transmit audio signals through the first audio pin group when the communication interface is inserted into the wireless dongle device.

2. The host device of claim 1, wherein, The communication interface is USB-A, and the first audio pin group transmits I2S signals.

3. The host device of claim 2, wherein, The first audio pin group includes an I2S_SCLK pin, an I2S_LRCK pin, an I2S_SDIN pin, and an I2S_SDOUT pin; The I2S_SCLK transmits a bit clock signal; the I2S_LRCK transmits a frame clock signal; the I2S_SDIN pin transmits an audio input signal; and the I2S_SDOUT transmits an audio output signal.

4. The host device of claim 2, wherein, The communication interface further includes a first ground pin group, which includes at least two ground pins, and at least one of the ground pins is arranged between the first USB pin group and the first audio pin group.

5. The host device of claim 1, wherein, The communication interface is a USB-C, and the communication interface further has a first screen transmission pin group. The controller is further configured to transmit a screen transmission signal through the first screen transmission pin group when the communication interface is inserted into a wireless dongle device; The first audio pin group transmits differential audio signals.

6. The host device of claim 5, wherein, The differential audio signal is an SPDIF signal; the first audio pin group includes an SPDIF_IN pin and an SPDIF_OUT pin, the SPDIF_IN pin transmits an audio input signal; the SPDIF_OUT transmits an audio output signal.

7. A wireless dongle device, characterized by, include: Communication ports and wireless modules; The communication port is configured to communicate with the host device according to any one of claims 1 to 6 through plugging, and the communication port has a second USB pin group and a second audio pin group; The second USB pin group is configured to be electrically connected between the wireless module and the first USB pin group of the host device, and the wireless dongle device outputs identification information to the controller of the host device through the second USB pin group and the first USB pin group; The second audio pin group is configured to be electrically connected between the wireless module and the first audio pin group of the host device; When the communication port of the wireless dongle device is inserted into the communication interface of the host device, the wireless dongle device transmits USB signals through the second USB pin group and the first USB pin group, and transmits audio signals through the first audio pin group and the second audio pin group.

8. The wireless dongle device of claim 7, wherein, The communication port is USB-A, and the second audio pin group transmits I2S signals; Or, the communication port is USB-C, the communication port also has a second screen transmission pin group, the second screen transmission pin group transmits a screen transmission signal, and the second audio pin group transmits a differential signal.

9. A conferencing system, characterized by The system comprises a microphone device, a host device as claimed in any one of claims 1-6, and a wireless dongle device as claimed in claim 7 or 8, the host device being in communication with the microphone device via the wireless dongle device.

10. The conferencing system of claim 9, wherein, The system also comprises a screen transmission device; The communication interface of the host device is USB-A, the communication port of the wireless dongle device is USB-A, and the first audio pin group of the communication interface and the second pin group of the communication port both transmit I2S signals. Or, the communication interface of the host device is USB-C, the communication port of the wireless dongle device is USB-C; the communication interface has a first screen transmission pin group, the communication port has a second screen transmission pin group, the second screen transmission pin group is electrically connected between the first screen transmission pin group and the screen transmission device; and the first audio pin group of the communication interface and the second pin group of the communication port both transmit differential signals.

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