Display devices

Abstract

This application provides a display device, relating to the field of electronic technology. The first motherboard and the second motherboard in the display device operate in different operating system environments. An analog-to-digital converter (ADC) module integrated on the second motherboard is connected to an audio acquisition module. The audio acquisition module converts the acquired first sound signal into a first analog electrical signal. The ADC module performs analog-to-digital conversion on the first analog electrical signal to obtain first audio data. An audio processing module performs noise reduction processing on the first audio signal to obtain second audio data. The audio processing module then sends the second audio data to the first motherboard. In this application, the ADC module is integrated on the second motherboard, working in conjunction with the audio processing module located on the second motherboard. The audio processing module performs noise reduction processing on the audio signal, eliminating the need for a separate, powerful integrated chip outside the second motherboard. This saves on the cost of the display device.

Description

Technical Field

[0001] This application belongs to the field of electronic technology, and in particular relates to a display device. Background Technology

[0002] With the development of digital information, online meetings can be conducted using all-in-one conference machines with large-screen displays. These all-in-one machines can be any display device equipped with a large screen. One type of all-in-one conference machine in this technology can simultaneously support both Windows and Android operating systems, thus meeting diverse user needs.

[0003] When using the aforementioned all-in-one conference machine, the audio signal processing and interaction are involved between the all-in-one machine at the conference location and the device at the conference location during the meeting. However, in related technologies, all-in-one conference machines require a large number of components to achieve audio signal processing and interaction functions, resulting in high production costs. Utility Model Content

[0004] The purpose of this application is to provide a display device that, while enabling audio signal processing and interaction, reduces the manufacturing cost of the display device.

[0005] A first aspect of this application provides a display device, including: a first motherboard for running a first operating system;

[0006] A second motherboard, used to run a second operating system;

[0007] An audio acquisition module is used to convert the acquired first sound signal into a first analog electrical signal;

[0008] The second motherboard integrates an audio processing module and an analog-to-digital converter (ADC). The output of the audio acquisition module is connected to the input of the ADC, and is used to send the first analog electrical signal to the ADC. The ADC performs analog-to-digital conversion on the first analog electrical signal to obtain first audio data. The output of the ADC is connected to the audio processing module, and sends the first audio data to the audio processing module. The audio processing module performs noise reduction processing on the first audio data to obtain second audio data. The audio processing module is connected to the first motherboard, and sends the second audio data to the first motherboard.

[0009] In some embodiments, the second motherboard further includes a communication interface;

[0010] The audio acquisition module is connected to the communication interface via a serial clock line, and the audio acquisition module provides a first clock signal to the communication interface via the serial clock line;

[0011] The output of the communication interface is connected to the audio processing module. The communication interface is used to instruct the audio processing module to perform noise reduction processing on the first audio data when a first clock signal is received.

[0012] In some embodiments, the second motherboard further integrates a storage module, and the audio processing module is also connected to the storage module. The first clock signal is also used to instruct the audio processing module to clear the third audio data stored in the storage module; wherein, the third audio data is audio data related to the sound signals historically acquired by the audio acquisition module.

[0013] In some embodiments, the display device further includes an integrated circuit built-in audio (Inter-IC Sound, I2S) bus, a display system, and an audio output system, and the second motherboard further includes an image transmission interface;

[0014] The audio processing module is also used to receive the first audio and video data sent by the first motherboard, parse the first audio and video data, and obtain the second image data and the fourth audio data.

[0015] The audio processing module is connected to the display system through the image transmission interface, and sends the second image data to the display system through the image transmission interface, and displays the image corresponding to the second image data through the display system;

[0016] The audio processing module is connected to the audio output system via the I2S bus, and sends the fourth audio data to the audio output system via the I2S bus. The audio output system converts the fourth audio data into a second sound signal and outputs it.

[0017] In some embodiments, the second motherboard further includes an audio / video transmission interface.

[0018] The audio processing module is connected to the first motherboard through the audio and video transmission interface, and the audio processing module receives the first audio and video data sent by the first motherboard through the audio and video transmission interface.

[0019] In some embodiments, the second motherboard further includes an audio transmission interface.

[0020] The audio processing module is connected to the first motherboard through the audio transmission interface, and the audio processing module sends the second audio data to the first motherboard through the audio transmission interface.

[0021] In some embodiments, the audio output system includes a decoding module, an operational amplifier module, and a speaker module; wherein,

[0022] The audio processing module is connected to the input terminal of the decoding module via the I2S bus. The decoding module receives the fourth audio data sent by the audio processing module via the I2S bus, and performs decoding and digital-to-analog conversion on the fourth audio data to obtain the second analog electrical signal.

[0023] The output terminal of the decoding module is connected to the input terminal of the operational amplifier module. The decoding module is used to send the second analog electrical signal to the operational amplifier module, and the operational amplifier module is used to amplify the second analog electrical signal to obtain a third analog electrical signal.

[0024] The output terminal of the operational amplifier module is connected to the input terminal of the speaker module. The operational amplifier module is used to send the third analog electrical signal to the speaker module, and the speaker module is used to convert the third analog electrical signal into the second sound signal for output.

[0025] In some embodiments, the display device further includes a power system; the power system is connected to the audio acquisition module, the first motherboard, the audio processing module, the audio output module and the display system respectively, and the power system is used to supply power to the audio acquisition module, the first motherboard, the audio processing module, the audio output module and the display system.

[0026] In some embodiments, the analog-to-digital converter module is also connected to the output of the operational amplifier module;

[0027] While receiving the first analog electrical signal, the analog-to-digital conversion module acquires the fourth analog electrical signal output from the current output terminal of the operational amplifier module, performs analog-to-digital conversion on the fourth analog electrical signal to obtain the fifth audio data, and sends the fifth audio data to the audio processing module.

[0028] The audio processing module performs noise reduction processing on the first audio data based on the first program code stored in the storage module and the fifth audio data.

[0029] In some embodiments, the first motherboard is fixedly connected to the second motherboard in a pluggable manner.

[0030] This application provides a display device in which an analog-to-digital converter (ADC) module and an audio processing module are integrated on a second motherboard. The first and second motherboards operate in different operating system environments. The ADC module integrated on the second motherboard is connected to an audio acquisition module. The audio acquisition module converts a acquired first sound signal into a first analog electrical signal. The ADC module performs analog-to-digital conversion on the first analog electrical signal to obtain first audio data. The audio processing module then performs noise reduction processing on the first audio data to obtain second audio data, which is then sent to the first motherboard. In this application, the ADC module is integrated on the second motherboard, working collaboratively with the audio processing module located on the second motherboard. The audio processing module performs noise reduction processing on the audio signal, eliminating the need for a separate, powerful integrated chip outside the second motherboard. This reduces the cost of the display device. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a display device provided in an embodiment of this application;

[0032] Figure 2 Provided for the embodiments of this application Figure 1 A schematic diagram of a display device with an added storage module and communication interface;

[0033] Figure 3 Provided for the embodiments of this application Figure 2 A schematic diagram of a display device with added audio and video transmission interfaces, audio transmission interfaces, image transmission interfaces, I2S bus, and audio data system on the basis of the previous one;

[0034] Figure 4 Provided for the embodiments of this application Figure 3 A schematic diagram of the audio output system in the display device;

[0035] Figure 5 Provided for the embodiments of this application Figure 4 A schematic diagram of the display device with added power supply system is provided on the basis of the previous one. Detailed Implementation

[0036] To provide a clearer understanding of the technical features, objectives, and effects of this application, the specific implementation methods of this application will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this application. Other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort should all fall within the scope of protection of this application.

[0037] In the description of this application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] In the description of this application, it should be understood that the numbering itself, such as "first", "second", etc., is only used to distinguish the described objects and has no sequential or technical meaning, and should not be construed as specifying or implying the importance of the described objects.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] In the description of this application, the term "multiple" refers to two or more. Furthermore, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0041] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit the application. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] With the development of digital information, online meetings can be conducted using all-in-one meeting machines with large-screen displays. These machines can support both Windows and Android operating systems to meet diverse user needs.

[0043] Specifically, the conference all-in-one machine includes a computer that meets the Open Pluggable Specification (OPS) (referred to as an OPS computer). The OPS computer is equipped with memory, a processor, multiple input / output interfaces, and a Windows operating system. The OPS computer can be embedded into the conference all-in-one machine through a standardized slot.

[0044] Compared to conference all-in-one machines that only support the Android operating system, those that support both Android and Windows operating systems offer a more stable and compatible operating system environment, supporting a wider range of applications and file formats. Secondly, the pluggable design of the OPS computer makes disassembly and maintenance of the conference all-in-one machine easier, extending its lifespan.

[0045] During a meeting, the conference all-in-one machine at the conference location and the devices at the conference location need to process and interact with audio and video signals. Related technologies often require multiple modules for processing audio and video signals in the conference all-in-one machine. For example, a powerful audio integration board using Digital Signal Processing (DSP) technology is needed to perform noise reduction on the audio signals, thus increasing the cost of the conference all-in-one machine.

[0046] Based on this, this application provides a display device for conferencing based on a dual operating system. The display device can be an all-in-one conferencing machine for online conferencing. The display device provided in this application does not require the addition of a DSP audio board with powerful audio processing capabilities to complete the noise reduction processing of audio data, thereby saving the cost of the display device.

[0047] Figure 1 This is a schematic diagram of the structure of the display device provided in the embodiments of this application; as shown Figure 1 As shown, the display device 1 includes a first motherboard 10, a second motherboard 20, and an audio acquisition module 30; wherein, the second motherboard 20 integrates an audio processing module 21 and an analog-to-digital converter module 22; the audio acquisition module 30 is connected to the input terminal of the analog-to-digital converter module 22, the output terminal of the analog-to-digital converter module 22 is connected to the audio processing module 21, and the audio processing module 21 is connected to the first motherboard 10.

[0048] The first motherboard 10 and the second motherboard 20 operate in different operating system environments. Specifically, the first motherboard runs a first operating system, and the second motherboard runs a second operating system. Instant messaging software runs in the operating system environment of the first motherboard.

[0049] The first motherboard 10 can be the motherboard in an OPS computer. The OPS computer is connected to the second motherboard 20 via a pluggable connection. Specifically, the first motherboard 10 is connected to the second motherboard 20 via a pluggable connection.

[0050] This application does not limit the type of operating system environment for the first motherboard 10 and the second motherboard 20. In some embodiments, the first motherboard 10 may operate in a Windows operating system environment or an Android operating system environment; the second motherboard 20 may operate in a Windows operating system environment or an Android operating system environment.

[0051] This application embodiment takes the example of the first motherboard 10 operating in a Windows operating system environment and the second motherboard 20 operating in an Android operating system environment. That is, the first operating system is a Windows operating system and the second operating system is an Android operating system. At this time, the instant messaging software runs in the first operating system environment.

[0052] When the speaker speaks, the audio acquisition module 30 mainly performs the work of acquiring the speaker's voice. The analog-to-digital conversion module 22 is used to convert the analog signal into a digital signal that can be processed by the audio processing module 21. The audio processing module 21 is used to perform noise reduction processing on the converted digital signal.

[0053] The following details the signal processing flow of each module when a speaker is speaking during the operation of instant messaging software:

[0054] When the instant messaging software is running, the audio acquisition module 30 acquires the first sound signal, performs sound-to-electric conversion on the first sound signal to obtain the first analog electrical signal, and sends the first analog electrical signal to the analog-to-digital conversion module 22.

[0055] In some embodiments, a serial digital interface (SDI) transmission line is provided between the audio acquisition module 30 and the analog-to-digital conversion module 22, and the audio acquisition module 30 sends a first analog electrical signal to the analog-to-digital conversion module 22 through the SDI transmission line.

[0056] In some embodiments, a serial clock line CLK is also provided between the audio acquisition module 30 and the analog-to-digital conversion module 22. The audio acquisition module 30 also sends a clock signal to the analog-to-digital conversion module 22 through the serial clock line. The analog-to-digital conversion module 22 synchronizes with the audio acquisition module 30 according to the clock signal, thereby receiving the first analog electrical signal.

[0057] In some embodiments, a grounding wire GND is also provided between the audio acquisition module 30 and the analog-to-digital conversion module 22, and the grounding wire is grounded.

[0058] In some embodiments, the audio acquisition module 30 includes a microphone array for acquiring sound signals.

[0059] The analog-to-digital conversion module 22 receives the first analog electrical signal, performs analog-to-digital conversion on the first analog electrical signal to obtain the first audio data, and sends the first audio data to the audio processing module 21.

[0060] The analog-to-digital conversion module 22 implements analog-to-digital conversion based on pulse density modulation (PDM). PDM technology is a technique that converts the first analog electrical signal into a series of digital signals with varying pulse density. The series of digital signals with varying pulse density form a data stream, namely the first audio data.

[0061] The audio processing module 21 is used to perform noise reduction processing on the first audio data to obtain the second audio data, and then send the second audio data to the first motherboard 10.

[0062] The noise reduction process includes noise suppression, reverberation suppression, and echo cancellation. During echo cancellation, the analog-to-digital converter 22 needs to acquire and process the echo signal generated by the audio output system 40. Figure 4 The embodiment describes the structure of the analog-to-digital conversion module 22 when acquiring and recovering signals, which will not be elaborated here.

[0063] In some embodiments, the audio processing module 21 may employ existing filtering algorithms to denoise the first audio data. For example, Finite Impulse Response (FIR) and Infinite Impulse Response (IIR) filtering algorithms.

[0064] It is understandable that instant messaging software generates first image data that needs to be displayed on the other end of the conference device during operation. If the instant messaging software is running under the Windows operating system, then the first image data is generated by the first motherboard 10.

[0065] The first motherboard 10 can fuse the first image data and the second audio data generated by the instant messaging software to obtain the second audio and video data, and send the second audio and video data to the other end device. In this way, the interaction of audio and video data between the local device and the other end device of the conference is realized.

[0066] The instant messaging software in this application embodiment is an application based on Internet technology that allows users to exchange one or more types of information, such as text, images, and voice, in real-time or near real-time; for example, instant messaging software can be online conferencing software.

[0067] The audio processing module of this application may employ a central processing unit (CPU).

[0068] This application provides a display device 1, wherein an analog-to-digital converter (ADC) module 22 and an audio processing module 21 are integrated on a second motherboard 20. The first motherboard 10 and the second motherboard 20 operate in different operating system environments. The ADC module 22 integrated on the second motherboard 20 is connected to an audio acquisition module 30. The audio acquisition module 30 converts the acquired first sound signal into a first analog electrical signal. The ADC module 22 performs analog-to-digital conversion on the first analog electrical signal to obtain first audio data. The audio processing module 21 performs noise reduction processing on the first audio data to obtain second audio data. The audio processing module 21 sends the second audio data to the first motherboard 10, enabling the first motherboard 10 to send second audio and video data to the other end of the conference based on the first image data and the second audio data generated by instant messaging software. In this application, the ADC module 22 is integrated on the second motherboard 20, working collaboratively with the audio processing module 21 located on the second motherboard 20. The audio processing module 21 performs noise reduction processing on the audio signal, eliminating the need for a separate, powerful integrated chip outside the second motherboard 20. This saves on the cost of the display device 1.

[0069] In some embodiments, the audio processing module 21 can also process the first audio data when a human voice signal is acquired, and not process the first audio data when no human voice signal is acquired, in order to save the resources of the audio processing module 21. This method is implemented through the communication interface 27 between the audio acquisition module 30 and the audio processing module 21.

[0070] This application provides a display device 1. Figure 2 This is a schematic diagram of the structure of the display device 1 provided in this application.

[0071] like Figure 2 As shown, the display device 1 also includes a communication interface 27, which is integrated on the second motherboard 20. The audio acquisition module 30 is connected to the input terminal of the communication interface 27 via the serial clock line CLK, and the output terminal of the communication interface 27 is connected to the audio processing module 21.

[0072] As described above, the audio acquisition module 30 sends a clock signal to the communication interface 27 via the serial clock line CLK, and correspondingly, the communication interface 27 receives the clock signal. The clock signal can be either a first clock signal or a second clock signal, and the logic state of the first clock signal differs from that of the second clock signal.

[0073] Specifically, when the first clock signal is high, the second clock signal is low; when the first clock signal is low, the second clock signal is high. This application uses an example where the first clock signal is high and the second clock signal is low.

[0074] The communication interface 27 receives a clock signal from the audio processing module 21. When the clock signal is the first clock signal, the communication interface 27 sends an indication signal to the audio processing module 21. The indication signal is used to instruct the audio processing module 21 to perform noise reduction processing on the first audio data.

[0075] When the communication interface 27 receives the first clock signal, it indicates that the first sound signal acquired by the audio acquisition module 30 is a human voice signal; when the communication interface 27 receives the second clock signal, it indicates that the audio acquisition module 30 has not yet acquired a human voice signal, and the first sound signal may be other sounds in the environment besides human voice.

[0076] It is understandable that when the first sound signal acquired by the audio acquisition module 30 is a human voice signal, the audio processing module 21 begins to denoise the first audio data. When no human voice signal is acquired, the audio processing module 21 does not process the first audio data in order to save the computing resources of the audio processing module 21.

[0077] In this application, the communication interface can be a general-purpose input / output (GPIO) module.

[0078] In some embodiments, such as Figure 2 As shown, the display device 1 also includes a storage module 23, which stores audio data related to historically acquired sound signals processed by the audio processing module 21. This audio data can be described as third audio data.

[0079] It is understandable that the audio acquisition module 30 may be in operation even when the instant messaging software is not running. This application refers to the sound signal acquired when the instant messaging software is not running as the third sound signal. The audio acquisition module 30, the analog-to-digital conversion module 22, and the audio processing module 21 will also process the third sound signal in the same way as the first sound signal to obtain the third audio data. The third audio data is stored in the storage module.

[0080] Accordingly, the audio processing module 21 loads the USB Audio Class (UAC) sound card driver. When the UAC sound card driver is successfully loaded, the audio processing module 21 and the first motherboard 10 can transmit the third audio data corresponding to the third sound signal.

[0081] When the audio processing module 21 receives an indication signal, it indicates that the instant messaging software has started running and the audio acquisition module 30 has acquired a human voice signal. The audio processing module 21 then reloads the UAC sound card driver, clears the third audio data stored in the storage module 23, and stops processing the third audio data. This increases the available storage space in the storage module 23, allowing the audio processing module 21 to begin processing the first audio data, thus improving the processing speed and shortening meeting delays.

[0082] Reloading the UAC sound card driver means turning the UAC sound card driver off and then on again.

[0083] In some embodiments, the storage module 23 also stores the first program code corresponding to the denoising algorithm. The audio processing module 21 runs the first program code stored in the storage module 23 to perform denoising processing on the first audio data and obtain the second audio data.

[0084] In some embodiments, the storage module 23 may be a read-only memory (ROM), and the first program code is written into the storage module 23 as firmware.

[0085] In some embodiments, the display device 1 further includes an audio output system, a display system, and a bus for the audio processing module 21 to interact with the audio output system, and the second motherboard 20 further includes an interface for the audio processing module 21, the first motherboard 10, and the display system to interact.

[0086] Figure 3 This is a schematic diagram of the structure of the display device 1 provided in the embodiments of this application; as shown Figure 3 As shown, the display device 1 also includes an audio output system 40, a display system 50, and an I2S bus 60.

[0087] The second motherboard 20 also includes an image transmission interface 26.

[0088] The audio processing module 21 is connected to the display system 50 through the image transmission interface 26, and the audio processing module 21 is connected to the audio output system 40 through the I2S bus 60.

[0089] The image transmission interface 26 can be a VbyOne interface. It is a digital interface standard specifically developed for image transmission and used to transmit high-definition image data.

[0090] The following example illustrates the processing flow of audio and video data by the display system 50 and audio output system 40 in display device 1, using the local conferencing device receiving audio and video data from the remote conferencing device as an example.

[0091] The audio processing module 21 receives the first audio and video data sent by the first motherboard 10; wherein the first audio and video data is generated by the conference peer device.

[0092] The audio processing module 21 parses the first audio and video data to obtain the second image data and the fourth audio data.

[0093] The audio processing module 21 sends the second image data to the display system 50 through the image transmission interface 26.

[0094] After receiving the second image data, the display system 50 processes the second image data and displays the image related to the second image data.

[0095] The audio processing module 21 sends the fourth audio data to the audio output system 40 via the I2S bus 60. The audio output system 40 converts the fourth audio data into a second sound signal and then outputs it.

[0096] In this embodiment, an audio output system 40 for outputting sound and a display system 50 for displaying images are added to the display device 1. An interface or bus is provided for the audio processing module 21 to interact with the display system 50 and the audio output system 40, respectively, and an interface is provided for the audio processing module 21 to exchange data with the first motherboard 10. Thus, sound output and image display functions can be realized.

[0097] In some embodiments, such as Figure 3 As shown, the second motherboard 20 also includes an audio / video transmission interface 24 and an audio transmission interface 25. The audio processing module 21 transmits audio / video signals to the first motherboard 10 through the audio / video transmission interface 24, and transmits audio signals to the first motherboard 10 through the audio transmission interface 25.

[0098] This application embodiment does not limit the type of audio and video transmission interface 24. The audio and video transmission interface 24 can be a high-definition multimedia interface (HDMI).

[0099] This application embodiment does not limit the type of audio transmission interface 25. The audio transmission interface 25 can be a Universal Serial Bus (USB) 2.0 version interface.

[0100] The audio processing module 21 is connected to the first motherboard 10 through the audio-video transmission interface 24 and the audio transmission interface 25 respectively. The audio processing module 21 sends the second audio data to the first motherboard 10 through the audio transmission interface 25, and receives the first audio-video data sent by the first motherboard 10 through the audio-video transmission interface 24.

[0101] Next, through Figure 4 The embodiments illustrate the structure of the audio output system 40 by way of example.

[0102] Figure 4 This is a schematic diagram of the structure of the display device 1 provided in the embodiments of this application; as shown Figure 3 As shown, the audio output system 40 includes a decoding module 41, an operational amplifier module 42, and a speaker module 43;

[0103] The audio processing module 21 is connected to the input terminal of the decoding module 41 via the I2S bus 60, the output terminal of the decoding module 41 is connected to the input terminal of the operational amplifier module 42, and the output terminal of the operational amplifier module 42 is connected to the input terminal of the speaker module 43.

[0104] The decoding module 41 is used to decode and perform digital-to-analog conversion on the fourth audio data to obtain a second analog electrical signal, and then send the second analog electrical signal to the operational amplifier module 42.

[0105] It is understandable that the fourth audio data can be in a compressed format. Therefore, the decoding module 41 needs to first decode the fourth audio data to obtain the original data, and then perform digital-to-analog conversion to obtain the second analog electrical signal.

[0106] Operational amplifier module 42 is used to amplify the second analog electrical signal to obtain a third analog electrical signal, and then send the third analog electrical signal to speaker module 43.

[0107] Amplifying the second analog electrical signal can increase the voltage or current of the signal input to the speaker, thereby driving the speaker diaphragm and outputting a sound signal.

[0108] Speaker module 43 is used to convert the third analog electrical signal into a second sound signal output.

[0109] In some embodiments, such as Figure 3 As shown, the speaker module 43 specifically includes a left ear speaker and a right ear speaker, and the output terminals of the operational amplifier module 42 are connected to the left ear speaker and the right ear speaker respectively. The operational amplifier module 42 inputs the second analog electrical signal to the left ear speaker and the right ear speaker respectively; both the left ear speaker and the right ear speaker convert the third analog electrical signal into a second sound signal for output.

[0110] The left or right ear speaker can be a loudspeaker.

[0111] In this application, the display device 1 also includes a power supply device for supplying power to each module. Figure 5 This is a schematic diagram of the structure of the display device 1 provided in the embodiments of this application; as shown Figure 5As shown, the display device 1 also includes a power supply system 70. The power supply system 70 is connected to the audio acquisition module 30, the first motherboard 10, the audio processing module 21, the decoding module 41, the operational amplifier module 42, the speaker module 43, and the display system 50.

[0112] The power supply system 70 is used to supply power to the audio acquisition module 30, the first motherboard 10, the audio processing module 21, the decoding module 41, the operational amplifier module 42, the speaker module 43, and the display system 50.

[0113] In some embodiments, when the power system is operating, the first host first loads the Android operating system, and then controls the second host to power on and load the Windows operating system. The second host can display the Windows operating system interface through the display system by interacting with the first host in related image formats.

[0114] It is understandable that when a speaker at the local end of the conference speaks, the speaker's initial audio signal is processed and transmitted to the remote conference equipment, where it is played back through the remote equipment's audio output system. The sound played back from the remote equipment may be acquired by the remote equipment's audio acquisition module, processed, and then transmitted to the input of the speaker module 43 at the local end of the conference. This signal transmitted to the input of the speaker module 43 is the interference signal from the speaker's speech; therefore, it is necessary to eliminate the interference signal.

[0115] Please continue to refer to Figure 5 In some embodiments, the output of the operational amplifier module 42 is also connected to the analog-to-digital converter module 22; the analog-to-digital converter module 22 receives the first analog electrical signal while simultaneously acquiring the fourth analog electrical signal output from the current operational amplifier circuit output.

[0116] The fourth analog electrical signal is the interference signal generated by the first audio signal mentioned above.

[0117] The analog-to-digital conversion module 22 also performs analog-to-digital conversion on the fourth analog electrical signal to obtain the fifth audio data, and sends the fifth audio data to the audio processing module 21.

[0118] The audio processing module 21 performs noise reduction processing on the first audio data based on the first program code and the fifth audio data stored in the storage module 23.

[0119] Specifically, the noise reduction process includes echo cancellation on the first audio data based on the fifth audio data, and noise suppression and reverberation suppression on the echo-cancelled data.

[0120] In this embodiment, the output terminal of the operational amplifier module 42 is connected to the input terminal of the analog-to-digital converter module 22, so that the analog-to-digital converter module 22 can collect the interference signal of the first audio signal output by the operational amplifier module 42, thereby completing the echo cancellation processing for the interference signal.

[0121] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. It should be noted that, for those skilled in the art, several equivalent obvious modifications and / or equivalent substitutions can be made without departing from the technical principles of this application, and these obvious modifications and / or equivalent substitutions should also be considered within the scope of protection of this application.

Claims

1. A display device, characterized in that, include: The first motherboard was used to run the first operating system; A second motherboard, used to run a second operating system; An audio acquisition module is used to convert the acquired first sound signal into a first analog electrical signal; The second motherboard integrates an audio processing module and an analog-to-digital converter (ADC). The output of the audio acquisition module is connected to the input of the ADC, and is used to send the first analog electrical signal to the ADC. The ADC performs analog-to-digital conversion on the first analog electrical signal to obtain first audio data. The output of the ADC is connected to the audio processing module, and sends the first audio data to the audio processing module. The audio processing module performs noise reduction processing on the first audio data to obtain second audio data. The audio processing module is connected to the first motherboard, and sends the second audio data to the first motherboard.

2. The display device according to claim 1, characterized in that, The second motherboard also includes a communication interface; The audio acquisition module is connected to the communication interface via a serial clock line, and the audio acquisition module provides a first clock signal to the communication interface via the serial clock line; The output of the communication interface is connected to the audio processing module. The communication interface is used to instruct the audio processing module to perform noise reduction processing on the first audio data when a first clock signal is received.

3. The display device according to claim 2, characterized in that, The second motherboard also integrates a storage module, and the audio processing module is also connected to the storage module. The first clock signal is also used to instruct the audio processing module to clear the third audio data stored in the storage module; wherein, the third audio data is audio data related to the sound signals historically acquired by the audio acquisition module.

4. The display device according to claim 3, characterized in that, It also includes an I2S bus, a display system, and an audio output system; the second motherboard also includes an image transmission interface. The audio processing module is also used to receive the first audio and video data sent by the first motherboard, parse the first audio and video data, and obtain the second image data and the fourth audio data. The audio processing module is connected to the display system through the image transmission interface, and sends the second image data to the display system through the image transmission interface, and displays the image corresponding to the second image data through the display system; The audio processing module is connected to the audio output system via the I2S bus, and sends the fourth audio data to the audio output system via the I2S bus. The audio output system converts the fourth audio data into a second sound signal and outputs it.

5. The display device according to claim 4, characterized in that, The second motherboard also includes audio and video transmission interfaces. The audio processing module is connected to the first motherboard through the audio and video transmission interface, and the audio processing module receives the first audio and video data sent by the first motherboard through the audio and video transmission interface.

6. The display device according to claim 1 or 5, characterized in that, The second motherboard also includes an audio transmission interface. The audio processing module is connected to the first motherboard through the audio transmission interface, and the audio processing module sends the second audio data to the first motherboard through the audio transmission interface.

7. The display device according to claim 4, characterized in that, The audio output system includes a decoding module, an operational amplifier module, and a speaker module; wherein... The audio processing module is connected to the input terminal of the decoding module via the I2S bus. The decoding module receives the fourth audio data sent by the audio processing module via the I2S bus, and performs decoding and digital-to-analog conversion on the fourth audio data to obtain the second analog electrical signal. The output terminal of the decoding module is connected to the input terminal of the operational amplifier module. The decoding module is used to send the second analog electrical signal to the operational amplifier module, and the operational amplifier module is used to amplify the second analog electrical signal to obtain a third analog electrical signal. The output terminal of the operational amplifier module is connected to the input terminal of the speaker module. The operational amplifier module is used to send the third analog electrical signal to the speaker module, and the speaker module is used to convert the third analog electrical signal into the second sound signal for output.

8. The display device according to claim 4, characterized in that, It also includes a power supply system; the power supply system is connected to the audio acquisition module, the first motherboard, the audio processing module, the audio output module and the display system respectively, and the power supply system is used to supply power to the audio acquisition module, the first motherboard, the audio processing module, the audio output module and the display system.

9. The display device according to claim 7, characterized in that, The analog-to-digital converter module is also connected to the output terminal of the operational amplifier module; While receiving the first analog electrical signal, the analog-to-digital conversion module acquires the fourth analog electrical signal output from the current output terminal of the operational amplifier module, performs analog-to-digital conversion on the fourth analog electrical signal to obtain the fifth audio data, and sends the fifth audio data to the audio processing module. The audio processing module performs noise reduction processing on the first audio data based on the first program code stored in the storage module and the fifth audio data.

10. The display device according to any one of claims 1-5, characterized in that, The second motherboard is fixedly connected to the first motherboard in a pluggable manner.

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