Audio and video interaction system, audio and video interaction device and intelligent blackboard

Abstract

The utility model belongs to the technical field of audio and video, and provides an audio and video interaction system, an audio and video interaction device and an intelligent blackboard. An audio and video interaction system comprises a control module, a microphone module, a first indication module and a terminal device, the control module comprises a video processor, the video processor is electrically connected with the terminal device and the first indication module, and the terminal device is electrically connected with the microphone module; according to the audio and video interaction system provided by the embodiment of the invention, the communication channels are added among the terminal equipment, the video processor and the microphone module, and the communication channel is added between the video processor and the first indication module, so that the microphone module can be closed when a user executes mute operation on the audio and video interaction system provided by the embodiment of the invention; and the state of the audio and video interaction system can be known through the first indication module, so that the user experience is improved.

Description

Technical Field

[0001] The present application belongs to the field of audio and video technology, and in particular relates to an audio and video interaction system, an audio and video interaction device and a smart blackboard. Background Art

[0002] Currently, all audio and video interactive systems on the market are equipped with microphones, but users cannot turn off the microphones when performing a mute operation on the audio and video interactive systems and there is no reminder function, resulting in a poor user experience. Utility Model Content

[0003] The embodiments of the present application provide an audio and video interaction system, an audio and video interaction device and a smart blackboard, which can solve the problem that the current audio and video interaction system cannot turn off the microphone hold and has no reminder function when the user performs a mute operation, resulting in a poor user experience.

[0004] In a first aspect, an embodiment of the present application provides an audio and video interaction system, comprising a control module, a microphone module, a first indication module and a terminal device, wherein the control module comprises a video processor, the video processor is electrically connected to the terminal device and the first indication module respectively, and the terminal device is electrically connected to the microphone module.

[0005] The audio and video interaction system provided in the embodiment of the present application adds a communication channel between the terminal device and the video processor and the microphone module, and adds a communication channel between the video processor and the first indication module. When the user performs a mute operation on the audio and video interaction system, the terminal device receives the mute execution instruction, and outputs a first instruction to the microphone module according to the mute execution instruction. The first instruction is used to instruct the microphone module to turn off, thereby avoiding the problem that the microphone module is still turned on when the audio and video interaction system is in a mute state, resulting in the inability to achieve complete mute; at the same time, when the terminal device receives the mute execution instruction, it will also output a second instruction to the control module, and the second instruction is used to instruct the control module to control the first indication module to emit light to remind the user that the audio and video interaction system is currently in a mute state.

[0006] In summary, when the user performs a mute operation on the audio and video interaction system provided in the embodiment of the present application, the user can turn off the microphone module to make the audio and video interaction system completely silent, and can understand the status of the audio and video interaction system through the first indication module, thereby improving the user experience.

[0007] In a possible implementation manner of the first aspect, the microphone module includes at least one microphone, and each of the microphones is electrically connected to the terminal device.

[0008] In a possible implementation manner of the first aspect, the audio and video interaction system further includes a display module, and the display module is electrically connected to the video processor;

[0009] The display module is used to display the image sent by the terminal device.

[0010] In a possible implementation manner of the first aspect, the display module includes a display screen, and the display screen is electrically connected to the video processor;

[0011] The display screen is used to display the image sent by the terminal device.

[0012] In a possible implementation manner of the first aspect, the audio and video interaction system further includes a key module, the key module is electrically connected to the video processor, and the video processor is electrically connected to the microphone module;

[0013] The button module is used to output a first level to the video processor when receiving a mute command; the video processor is used to output a second level to the microphone module according to the first level, and output a third level to the first indication module; the microphone module is used to turn off according to the second level; and the first indication module is used to emit light according to the third level.

[0014] In a possible implementation manner of the first aspect, the audio and video interaction system further includes a sound module, and the sound module is electrically connected to the video processor;

[0015] The sound module is used to amplify and play the sound emitted by the terminal device.

[0016] In a possible implementation manner of the first aspect, the sound module includes a power amplifier and a speaker, one end of the power amplifier is electrically connected to the video processor, and the other end of the power amplifier is electrically connected to the speaker.

[0017] In a possible implementation manner of the first aspect, the audio and video interaction system further includes a power module, and the power module is electrically connected to the terminal device, the video processor, the microphone module, and the first indication module respectively;

[0018] The power module is used to supply power to the terminal device, the video processor, the microphone module and the first indication module.

[0019] In a second aspect, an embodiment of the present application provides an audio and video interaction device, comprising the audio and video interaction system described in any one of the first aspects.

[0020] In a third aspect, an embodiment of the present application provides a smart blackboard, comprising the audio and video interaction device described in the second aspect, wherein at least one side of the audio and video interaction device is provided with a writing blackboard.

[0021] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0022] An embodiment of the present application provides an audio and video interaction system, including a control module, a microphone module, a first indication module and a terminal device, wherein the control module includes a video processor, the video processor is electrically connected to the terminal device and the first indication module respectively, and the terminal device is electrically connected to the microphone module.

[0023] The audio and video interaction system provided in the embodiment of the present application adds a communication channel between the terminal device and the video processor and the microphone module, and adds a communication channel between the video processor and the first indication module. When the user performs a mute operation on the audio and video interaction system, the terminal device receives the mute execution instruction, and outputs a first instruction to the microphone module according to the mute execution instruction. The first instruction is used to instruct the microphone module to turn off, thereby avoiding the problem that the microphone module is still turned on when the audio and video interaction system is in a mute state, resulting in the inability to achieve complete mute; at the same time, when the terminal device receives the mute execution instruction, it will also output a second instruction to the control module, and the second instruction is used to instruct the control module to control the first indication module to emit light to remind the user that the audio and video interaction system is currently in a mute state.

[0024] In summary, when the user performs a mute operation on the audio and video interaction system provided in the embodiment of the present application, the user can turn off the microphone module to make the audio and video interaction system completely silent, and can understand the status of the audio and video interaction system through the first indication module, thereby improving the user experience.

[0025] It can be understood that the beneficial effects of the second to third aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a principle block diagram of an audio and video interaction system provided by an embodiment of the present application;

[0028] Figure 2 is a principle block diagram of an audio and video interaction system provided by another embodiment of the present application;

[0029] Figure 3 is a principle block diagram of an audio and video interaction system provided by another embodiment of the present application;

[0030] Figure 4is a principle block diagram of an audio and video interaction system provided by another embodiment of the present application;

[0031] Figure 5 is a principle block diagram of an audio and video interaction system provided by another embodiment of the present application;

[0032] Figure 6 It is a principle block diagram of an audio and video interaction system provided by another embodiment of the present application.

[0033] In the figure: 10, control module; 11, video processor; 20, terminal device; 30, microphone module; 31, microphone; 40, first indication module; 50, display module; 51, display screen; 60, button module; 70, sound module; 71, power amplifier; 72, speaker; 80, power supply module; 90, second indication module. DETAILED DESCRIPTION

[0034] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0035] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0036] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0037] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0038] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0039] At present, the audio and video interaction systems on the market are all equipped with microphones and cameras, so that the audio and video interaction systems can support online interactive functions (such as video conferencing functions). When the user performs a mute operation on the audio and video interaction system, the microphone cannot be turned off and there is no reminder function, resulting in a poor user experience.

[0040] In view of the above problems, the present application provides an audio and video interaction system. Figure 1 As shown, the audio and video interaction system includes a control module 10, a microphone module 30, a first indication module 40 and a terminal device 20. The control module 10 includes a video processor 11, which is electrically connected to the terminal device 20 and the first indication module 40 respectively, and the terminal device 20 is electrically connected to the microphone module 30.

[0041] The audio and video interaction system provided in the embodiment of the present application adds a communication channel between the terminal device 20 and the video processor 11 and the microphone module 30 , and adds a communication channel between the video processor 11 and the first indication module 40 .

[0042] When the user performs a mute operation on the audio and video interaction system, the terminal device 20 receives the mute execution instruction and outputs a first instruction to the microphone module 30 according to the mute execution instruction. The first instruction is used to instruct the microphone module 30 to turn off, thereby avoiding the problem that the microphone module 30 is still turned on when the audio and video interaction system is in a mute state, resulting in the inability to achieve complete mute. At the same time, when the terminal device 20 receives the mute execution instruction, it will also output a second instruction to the control module 10. The second instruction is used to instruct the control module 10 to control the first indication module 40 to emit light to remind the user that the audio and video interaction system is currently in a mute state.

[0043] In summary, when the user performs a mute operation on the audio and video interaction system provided in the embodiment of the present application, the microphone module 30 can be turned off to make the audio and video interaction system completely silent, and the status of the audio and video interaction system can be understood through the first indication module 40, thereby improving the user experience.

[0044] When the user cancels the mute operation on the audio and video interaction system, the terminal device 20 receives the unmute instruction and outputs a third instruction to the microphone module 30 according to the unmute instruction. The third instruction is used to instruct the microphone module 30 to turn on. At the same time, the terminal device 20 also outputs a fourth instruction to the control module 10 when receiving the unmute instruction. The fourth instruction is used to instruct the control module 10 to control the first indication module 40 to turn off, so as to remind the user that the audio and video interaction system is currently in the sound pickup state.

[0045] As can be seen from the above, the user realizes the control of the microphone module 30 and the first indication module 40 through the audio and video interaction system provided in the embodiment of the present application. When the user performs a mute operation on the audio and video interaction system provided in the embodiment of the present application, the microphone module 30 will be turned off and the first indication module 40 will be controlled to light up; when the user cancels the mute operation on the audio and video interaction system provided in the embodiment of the present application, the microphone module 30 will be turned on and the first indication module 40 will be controlled to turn off.

[0046] In an embodiment of the present application, the terminal device 20 is used to output a first instruction to the microphone module 30 through a USB (Universal Serial Bus) interface when receiving an execution mute instruction, and output a second instruction to the control module 10 through a Uart (Universal Asynchronous Receiver / Transmitter) interface. The microphone module 30 is used to turn off according to the first instruction. The control module 10 is used to output a first control signal to the first indication module 40 according to the second instruction. The first indication module 40 is used to emit light according to the first control signal. Among them, the first instruction is an instruction based on the HID (Human Interface Device) protocol, which is used to instruct the microphone module 30 to turn off; the second instruction is a mute code table; and the first control signal is a high-level signal. It should be noted that after the control module 10 executes the second instruction issued by the terminal device 20, it will output a mute code table to the terminal device 20 through the Uart interface to inform the terminal device 20 that the second instruction has been executed.

[0047] In an embodiment of the present application, the terminal device 20 is used to output a third instruction to the microphone module 30 through the USB interface when receiving the unmute instruction, and output a fourth instruction to the control module 10 through the Uart interface. The microphone module 30 is used to turn on according to the third instruction. The control module 10 is used to output a second control signal to the first indication module 40 according to the fourth instruction. The first indication module 40 is used to turn off according to the second control signal. Among them, the third instruction is an instruction based on the HID protocol, which is used to instruct the microphone module 30 to turn on; the fourth instruction is a pickup code table; and the second control signal is a low-level signal. It should be noted that after executing the fourth instruction issued by the terminal device 20, the control module 10 outputs the pickup code table to the terminal device 20 through the Uart interface to inform the terminal device 20 that the fourth instruction has been executed.

[0048] Exemplarily, the terminal device 20 includes a laptop, a tablet computer, a mobile phone, a personal computer, etc.

[0049] It should be noted that the audio and video interaction system provided in the embodiment of the present application can be applied to electronic devices such as all-in-one catering machines, conference business machines, and smart blackboards.

[0050] like Figure 2 As shown, the microphone module 30 includes at least one microphone 31, and each microphone 31 is electrically connected to the terminal device 20. The terminal device 20 communicates with the microphone 31 through a USB interface.

[0051] In the embodiment of the present application, the microphone 31 is used to be turned off according to the first instruction when the terminal device 20 receives the mute execution instruction, and turned on according to the third instruction when the terminal device 20 receives the unmute instruction. The first instruction is an instruction based on the HID protocol, which is used to instruct the microphone 31 to turn off; the third instruction is an instruction based on the HID protocol, which is used to instruct the microphone 31 to turn on.

[0052] Exemplarily, the first indication module 40 includes at least one first LED, and each first LED is electrically connected to the video processor 11. The video processor 11 communicates with the first LED through an I / O (Input / Output) port.

[0053] In the embodiment of the present application, the first LED is used to emit light according to the first control signal when the terminal device 20 receives the mute execution command, and is extinguished according to the second control signal when the terminal device 20 receives the unmute command. The first control signal is a high level signal, and the second control signal is a low level signal.

[0054] It should be noted that the present application does not limit the light emitting color of the first LED, as long as it can serve as an indication.

[0055] like Figure 3 As shown, the audio and video interaction system further includes a display module 50 , and the display module 50 is electrically connected to the video processor 11 .

[0056] In the embodiment of the present application, the display module 50 is used to display the image sent by the terminal device 20. Specifically, the terminal device 20 sends the image to the video processor 11 through the HDMI (High-Definition Multimedia Interface) interface, and the video processor 11 processes the image and transmits the processed image to the display module 50 through the V-by-One interface (mobile industry processor interface) for display.

[0057] like Figure 4 As shown, the display module 50 includes a display screen 51 , and the display screen 51 is electrically connected to the video processor 11 .

[0058] In the embodiment of the present application, the display screen 51 is used to display the image sent by the terminal device 20.

[0059] Exemplarily, the display screen 51 includes an LED display screen, an LCD (Liquid Crystal Display) display screen, or an OLED (Organic Light-Emitting Diode) display screen.

[0060] like Figure 5 As shown, the audio and video interactive system further includes a key module 60, which is electrically connected to the video processor 11, and the video processor 11 is electrically connected to the microphone module 30. Figure 5 It can be seen that each microphone 31 in the microphone module 30 is electrically connected to the video processor 11. The video processor 11 communicates with the microphone 31 through an I / O interface.

[0061] In the embodiment of the present application, the button module 60 is used to output a first level to the video processor 11 when receiving a mute command. The video processor 11 is used to output a second level to the microphone module 30 according to the first level, and output a third level to the first indication module 40. The microphone module 30 is used to turn off according to the second level. The first indication module 40 is used to emit light according to the third level. Among them, the first level is a high level signal, the second level is a high level signal, and the third level is a high level signal.

[0062] The button module 60 is further configured to output a fourth level to the video processor 11 upon receiving a muting command. The video processor 11 is configured to output a fifth level to the microphone module 30 according to the fourth level, and output a sixth level to the first indication module 40. The microphone module 30 is configured to be turned on according to the fifth level. The first indication module 40 is configured to be turned off according to the sixth level. The fourth level is a low level signal, the fifth level is a low level signal, and the sixth level is a low level signal.

[0063] In some embodiments, when the button module 60 is clicked by the user, that is, the button module 60 receives the mute command, the first level is output to the video processor 11. The video processor 11 is used to output the second level to the microphone module 30 according to the first level, and output the third level to the first indication module 40. The microphone module 30 is turned off according to the second level, and at the same time outputs a low level signal to the video processor 11 to inform it that it is in the off state. The first indication module 40 is used to emit light according to the third level.

[0064] When the button module 60 is clicked by the user again, that is, the button module 60 receives the unmute command, the fourth level is output to the video processor 11. The video processor 11 is used to output the fifth level to the microphone module 30 according to the fourth level, and output the sixth level to the first indication module 40. The microphone module 30 is used to turn on according to the fifth level, and output a high level signal to the video processor 11 to inform it that it is in the turned-on state. The first indication module 40 is used to turn off according to the sixth level.

[0065] like Figure 5 As shown, the audio and video interactive system further includes a sound module 70, and the sound module 70 is electrically connected to the video processor 11. The video processor 11 communicates with the sound module 70 via an audio interface.

[0066] In the embodiment of the present application, the sound module 70 is used to amplify and play the sound emitted by the terminal device 20.

[0067] For example, Figure 5 As shown, the sound module 70 includes a power amplifier 71 and a speaker 72 . One end of the power amplifier 71 is electrically connected to the video processor 11 , and the other end of the power amplifier 71 is electrically connected to the speaker 72 .

[0068] In the embodiment of the present application, the power amplifier 71 is used to amplify the sound emitted by the terminal device 20, and the processed sound is played through the speaker 72.

[0069] like Figure 5 As shown, the audio and video interactive system further includes a power module 80, which is electrically connected to the terminal device 20, the video processor 11, the microphone module 30 and the first indication module 40 respectively. Figure 5 It can be seen that the power module 80 is also electrically connected to the display module 50 , the key module 60 and the sound module 70 respectively.

[0070] In the embodiment of the present application, the power module 80 is used to provide power to the terminal device 20, the video processor 11, the microphone module 30, the first indication module 40, the display module 50, the button module 60 and the sound module 70.

[0071] like Figure 6 As shown, the audio and video interaction system further includes a second indication module 90, and the second indication module 90 is electrically connected to the video processor 11 and the power module 80 respectively.

[0072] In the embodiment of the present application, the power module 80 is used to supply power to the second indication module 90. The second indication module 90 is used to emit light when the video processor 11 is turned on to enable the user to understand the working status of the audio and video interactive system.

[0073] Exemplarily, the second indication module 90 includes at least one second LED, each of which is electrically connected to the video processor 11. The video processor 11 communicates with the second LED through the I / O port. The second LED is used to emit light when the video processor 11 is turned on to enable the user to understand the working status of the audio and video interactive system.

[0074] It should be noted that the present application does not limit the light emitting color of the second LED, as long as it can play an indicating role, wherein the light emitting color of the second LED is different from the light emitting color of the first LED.

[0075] It should be noted that the button module 60 , the first indication module 40 , the display module 50 and the second indication module 90 may be integrated on one display panel.

[0076] Combine the following Figure 6 The working principle of the present application is explained and two specific embodiments are given to make the present application more clearly expressed.

[0077] The power module 80 is used to supply power to each module to ensure that each module can work normally. When the video processor 11 is turned on, the second indication module 90 is controlled to emit light and the display module 50 is driven to display an image. When the video processor 11 is switched to the terminal device 20, the terminal device 20 is turned on and runs the video conferencing software. The user interacts online through the video conferencing software in the terminal device 20. The sound emitted by the user is picked up by the microphone module 30, processed and transmitted to the video processor 11, and then transmitted to the sound module 70 through the video processor 11 for playback.

[0078] Embodiment 1

[0079] When the user does not need to speak, he clicks the button module 60, that is, the button module 60 receives the mute command, and outputs the first level to the video processor 11. The video processor 11 outputs the second level to the microphone module 30 according to the first level, and outputs the third level to the first indication module 40. The microphone module 30 is turned off according to the second level, and at the same time outputs a low level signal to the video processor 11 to inform it that it is in the off state. The first indication module 40 emits light according to the third level.

[0080] When the user needs to speak, he clicks the button module 60 again, that is, the button module 60 receives the unmute command, and outputs the fourth level to the video processor 11. The video processor 11 outputs the fifth level to the microphone module 30 according to the fourth level, and outputs the sixth level to the first indication module 40. The microphone module 30 is turned on according to the fifth level, and at the same time outputs a high level signal to the video processor 11 to inform it that it is in the on state. The first indication module 40 is turned off according to the sixth level.

[0081] Embodiment 2

[0082] When the user does not need to speak, clicks the mute icon in the video conferencing software, that is, the terminal device 20 receives the mute execution command, then the terminal device 20 outputs the first command to the microphone module 30 through the USB interface, and outputs the second command to the video processor 11 through the Uart interface, the microphone module 30 is turned off according to the first command, the video processor 11 outputs the first control signal to the first indication module 40 according to the second command, the first indication module 40 emits light according to the first control signal, and after executing the second command issued by the terminal device 20, the video processor 11 outputs the mute code table to the terminal device 20 through the Uart interface to inform the terminal device 20 that the second command has been executed.

[0083] When the user needs to speak, clicks the mute icon in the video conferencing software again, that is, the terminal device 20 receives the unmute command, and the terminal device 20 outputs the third command to the microphone module 30 through the USB interface, and outputs the fourth command to the video processor 11 through the Uart interface. The microphone module 30 is turned on according to the third command, and the video processor 11 outputs the second control signal to the first indication module 40 according to the fourth command, and the first indication module 40 is extinguished according to the second control signal. After executing the fourth command issued by the terminal device 20, the video processor 11 outputs the pickup code table to the terminal device 20 through the Uart interface to inform the terminal device 20 that the fourth command has been executed.

[0084] The embodiment of the present application also provides an audio and video interaction device, including the audio and video interaction system described above. Since the audio and video interaction device provided in the embodiment of the present application adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0085] The embodiment of the present application also provides a smart blackboard, including the audio and video interactive device described above, and at least one side of the audio and video interactive device is provided with a writing blackboard. Since the smart blackboard provided by the embodiment of the present application adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0086] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An audio and video interactive system, characterized in that: It includes a control module, a microphone module, a first indication module and a terminal device, wherein the control module includes a video processor, the video processor is electrically connected to the terminal device and the first indication module respectively, and the terminal device is electrically connected to the microphone module; The audio and video interaction system further includes a key module, wherein the key module is electrically connected to the video processor, and the video processor is electrically connected to the microphone module; The button module is used to output a first level to the video processor when receiving a mute command; the video processor is used to output a second level to the microphone module and a third level to the first indication module according to the first level; The microphone module is used to be turned off according to the second level; The first indication module is used for emitting light according to the third level.

2. The audio and video interactive system according to claim 1, characterized in that: The microphone module includes at least one microphone, and each of the microphones is electrically connected to the terminal device.

3. The audio and video interactive system according to any one of claims 1-2, characterized in that: The audio and video interaction system further includes a display module, and the display module is electrically connected to the video processor; The display module is used to display the image sent by the terminal device.

4. The audio and video interactive system according to claim 3, characterized in that: The display module includes a display screen, and the display screen is electrically connected to the video processor; The display screen is used to display the image sent by the terminal device.

5. The audio and video interactive system according to any one of claims 1-2, characterized in that: The audio and video interaction system further includes a sound module, which is electrically connected to the video processor; The sound module is used to amplify and play the sound emitted by the terminal device.

6. The audio and video interactive system according to claim 5, characterized in that: The sound module includes a power amplifier and a speaker. One end of the power amplifier is electrically connected to the video processor, and the other end of the power amplifier is electrically connected to the speaker.

7. The audio and video interactive system according to any one of claims 1-2, characterized in that: The audio and video interaction system further includes a power module, which is electrically connected to the terminal device, the video processor, the microphone module and the first indication module respectively; The power module is used to supply power to the terminal device, the video processor, the microphone module and the first indication module.

8. An audio and video interactive device, characterized in that: An audio and video interactive system comprising any one of claims 1-7.

9. A smart blackboard, characterized in that: It comprises the audio and video interaction device as claimed in claim 8, wherein at least one side of the audio and video interaction device is provided with a writing blackboard.

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