CN111131733A

CN111131733A - Audio processing device, karaoke circuit board and multifunctional television all-in-one machine system

Info

Publication number: CN111131733A
Application number: CN202010033829.7A
Authority: CN
Inventors: 张辉
Original assignee: Guangzhou Aimyunion Network Technology Co ltd
Current assignee: Guangzhou Aimyunion Network Technology Co ltd
Priority date: 2019-12-31
Filing date: 2020-01-13
Publication date: 2020-05-08
Also published as: CN211908972U

Abstract

The application provides an audio processing device, a karaoke circuit board and a multifunctional television all-in-one machine system. The audio processing device comprises a core mainboard, an audio digital board and an audio analog circuit; a plurality of audio interfaces are integrated on the core mainboard, and a plurality of audio data transmission channels corresponding to the audio interfaces are arranged between the core mainboard and the audio digital board; the audio digital board collects audio data streams of all the audio data transmission channels, the audio data streams are superposed, the superposed audio data streams are transmitted to the audio analog circuit, and the audio analog circuit inputs audio signals to the audio playing equipment. The audio processing device is integrated with a plurality of audio interfaces, a plurality of audio data transmission channels are arranged between the core main board and the audio digital board, the audio digital board can collect and superpose a plurality of audio data streams, different audio input data and audio output data can be matched more flexibly in practical use, the audio interfaces are more flexible and convenient to use, and the compatibility is improved.

Description

Audio processing device, karaoke circuit board and multifunctional television all-in-one machine system

Technical Field

The application relates to the technical field of audio circuits, in particular to an audio processing device, a karaoke circuit board and a multifunctional television all-in-one machine system.

Background

At present, most televisions on the market are provided with systems, so that the karaoke function can be realized, and the scheme of using the televisions to perform entertainment activities such as karaoke and the like is taken as an example of the current popular internet on-demand scheme, products are all in wireless connection, on-demand is performed on the internet through the televisions, the use is simple and convenient, but most hardware of the televisions on the market mainly meet the requirement of users on-demand watching videos, professional optimization is not performed on multiple functions such as audio processing in a singing scene, connection delay of microphones and the like, and the experience of singing is greatly reduced. For this reason, the prior art provides a singing entertainment function by connecting an audio processing board (such as a karaoke circuit board) with a core main board of a television set or the like.

In the prior art, the core main board and the audio processing board are generally connected with the designated audio and video playing devices one by one through a plurality of circuit boards for video and audio processing, the interface is fixed and single, and only the audio and video playing devices and the peripheral devices of specific models need to be connected. This results in that the audio processing board cannot be connected to a non-compatible audio/video player to provide singing entertainment.

Disclosure of Invention

The application provides an audio processing device, a karaoke circuit board and a multifunctional television all-in-one machine system.

An audio processing device comprises a core mainboard, an audio digital board and an audio analog circuit;

the core mainboard is connected with the audio digital board in a way of matching a male socket with a female socket, and the audio digital board is connected with the audio analog circuit in a way of matching the male socket with the female socket;

a plurality of audio interfaces are integrated on the core mainboard, and a plurality of audio data transmission channels corresponding to the audio interfaces are arranged between the core mainboard and the audio digital board;

the audio digital board collects audio data streams of the audio data transmission channels, the audio data streams are superposed, the superposed audio data streams are transmitted to the audio analog circuit, and the audio analog circuit inputs audio signals to audio playing equipment.

In one embodiment, the core motherboard is provided with a plurality of video interfaces and audio interfaces; the core mainboard and the audio digital board are connected through a board connector, each audio interface is arranged on the board connector, and a plurality of audio transmission channels are integrated between the core mainboard and the digital board.

In one embodiment, the core motherboard includes a processor and video interface extension circuitry connected to a native video interface of the processor;

the video interface expansion circuit comprises a video output interface expansion circuit, and the native video interface comprises a native video output interface; the video output interface expansion circuit expands the native video output interface to include at least one HDMI video output interface and at least one VBO video output interface.

In one embodiment, the core motherboard includes a processor and video interface extension circuitry connected to a native video interface of the processor; the video interface expansion circuit comprises an HDMI multi-path receiving expansion circuit, and the native video interface comprises a native video input interface; the HDMI multi-channel receiving expansion circuit converts the native video input interface into a plurality of video input interfaces.

In one embodiment, the audio interface expansion circuit further includes a PCIE-to-multi-path USB circuit, and the native audio interface includes a PCIE audio interface;

the PCIE-to-multi-path USB circuit is used for expanding the PCIE audio interface into a plurality of audio interfaces connected with USB sound cards;

in one embodiment, the audio interface expansion circuit further includes an HDMI receiving chip, where the HDMI receiving chip includes at least one audio output interface, and the audio output interface is connected to the first board connector to enable the first board connector to be connected to the audio digital board, and the HDMI receiving chip is configured to receive audio data through the HDMI interface and output the audio data through the audio output interface on the HDMI receiving chip.

In one embodiment, the audio digitizer is further configured to receive audio data input from a digital microphone and/or a wireless microphone, to perform wireless output of audio data, and to input audio data to a wired transmission medium.

In one embodiment, the audio digital board comprises a programmable logic array and a digital signal processor supporting multiple audio signal processing, wherein the programmable logic array is connected with the digital signal processor, and the digital signal processor is used for processing the coded audio stream of the TDMA.

In one embodiment, the audio analog circuit comprises a power management module;

the power management module is used for controlling the power-on time sequence in the audio processing device according to the working state of the audio processing device.

In one embodiment, a plurality of communication interfaces are arranged on a processor of the core mainboard, the processor is connected with one or more peripheral devices of a microphone, a motion capture camera, a two-dimensional code scanner and a live broadcast acquisition camera through the communication interfaces, and the processor transmits data and control signals with the peripheral devices through the communication interfaces;

in one embodiment, the core motherboard further includes a network connection module connected to the processor, the network connection module is provided with an ethernet interface, and the network connection module further includes a WiFi module for providing a WiFi network communication interface and a mobile communication module for accessing a mobile communication network.

A karaoke circuit board comprises an audio processing device according to any one of the embodiments, wherein the audio processing device is connected with a screen through a video interface, the audio processing device is connected with a video-on-demand system to obtain video-on-demand, the audio processing device is connected with the screen through the video interface, and an audio analog circuit of the audio processing device is respectively connected with a microphone and an audio playing device.

A multifunctional television all-in-one machine system comprises a television and a karaoke circuit board in any one of the embodiments, wherein the karaoke circuit board is connected with the television through a video interface and an audio interface respectively.

In the audio processing device, the karaoke circuit board and the multifunctional television all-in-one machine system, a plurality of audio interfaces are integrated on the core mainboard, a plurality of audio data transmission channels are arranged between the core mainboard and the audio digital board, the audio digital board can collect and superpose a plurality of audio data streams, different audio input data and audio output data can be matched more flexibly in practical use, the audio interfaces are more flexibly and conveniently used, and the compatibility of the audio processing device, the karaoke circuit board and the multifunctional television all-in-one machine system is improved.

Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice.

Drawings

The foregoing and/or additional aspects and advantages will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a diagram illustrating an exemplary audio processing apparatus;

FIG. 2 is a schematic diagram of a core motherboard according to an embodiment;

FIG. 3 is a schematic diagram of an audio digitizer in one embodiment;

FIG. 4 is a schematic diagram of an audio analog circuit;

FIG. 5 is a state diagram for power management in one embodiment;

FIG. 6 is a timing diagram for power management.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The modular design is adopted, and the design scheme is different from the existing integrated, integrated and low-cost homogenization design scheme in the market. The core module includes a power module, a core motherboard, an audio digital board, an audio analog circuit, a screen, and various peripheral devices, and a schematic diagram is shown in fig. 1.

As shown in fig. 1, fig. 1 is a schematic structural diagram of an audio processing apparatus according to an embodiment. In one embodiment, the present application provides an audio processing device comprising a core motherboard, an audio digital board, and an audio analog circuit (i.e., the audio analog board shown in fig. 1). The core mainboard is connected with the audio digital board in a male seat and female seat matching mode, and the audio digital board is connected with the audio analog circuit in a male seat and female seat matching mode. The core mainboard is integrated with a plurality of audio interfaces, and a plurality of audio data transmission channels corresponding to the audio interfaces are arranged between the core mainboard and the audio digital board. The audio digital board collects audio data streams of the audio data transmission channels, the audio data streams are superposed, the superposed audio data streams are transmitted to the audio analog circuit, and the audio analog circuit inputs audio signals to audio playing equipment.

Among the above-mentioned audio processing device, the integration has a plurality of audio frequency interfaces on the core mainboard to set up many audio data transmission channels between core mainboard and the audio digital board, many audio data streams can be gathered and superpose to the audio digital board, can match different audio input data and audio output data more nimble in the in-service use, and audio frequency interface's use is nimble more convenient, improves audio processing device's compatibility.

And the core mainboard is stably connected with the audio digital board and the audio digital board is stably connected with the audio analog circuit in a male seat and female seat matching mode, so that the connection reliability is ensured, and the core mainboard, the audio digital board or the audio analog circuit can be conveniently replaced. Taking a processor (CPU) in a core mainboard with a very fast update speed as an example, the module type design is adopted to facilitate the update, and the new design can be rapidly completed only by updating the core mainboard.

The audio analog circuit and the digital audio board are reliably connected by adopting a board connector, and a plurality of audio IIS input and output signal connections, control signal connections and peripheral equipment extension connections are realized in the board connector.

As shown in fig. 2, fig. 2 is a schematic structural diagram of a core motherboard in an embodiment. In one embodiment, the core motherboard is provided with a plurality of video interfaces and audio interfaces; the core mainboard and the audio digital board are connected through a board connector, each audio interface is arranged on the board connector, and a plurality of audio transmission channels are integrated between the core mainboard and the digital board.

The core mainboard is connected with the audio digital board by adopting a multi-pin board connector, so that a plurality of IIS audio input and output connections and SPDIF input and output audio signal connections are realized, and meanwhile, a plurality of USB interfaces, COM communication lines, network communication lines, power supplies and power supply control lines can be matched and designed for digital boards with different functions according to different product requirements, so that the connection is reliable, and the replacement is convenient.

The video output interface expansion circuit can comprise an HDMI-to-VBO distributor and an HDMI one-in-two-out distributor. In most cases, a processor often has only ONE native HDMI output interface, and in order to realize a V BY ONE (VBO for short), firstly, an HDMI ONE-in two-out extension chip is used, and then, an HDMI-to-V BY ONE chip is used to realize the V BY ONE interface function; and the other path of expanded HDMI is used for direct output.

The video output interface expansion circuit can also comprise a MIPI-to-HDMI chip which is used for converting a MIPI DSI interface into an HDMI interface.

the video interface expansion circuit comprises an HDMI multi-path receiving expansion circuit, and the native video interface comprises a native video input interface; the HDMI multi-channel receiving expansion circuit converts the native video input interface into a plurality of video input interfaces.

The HDMI output interface outputs complete audio and video information; the second path of HDMI output interface adopts a native MIPI DSI interface of a processor, and is realized by converting MIPI into an HDMI chip.

Specifically, an HDMI multi-path selection switch and an HDMI to MIPI chip are adopted, an external HDMI signal video input function is achieved through a CPU MIPI CSI interface, and an external HDMI signal audio signal is directly output to the audio digital board for audio signal restoration through SPDIF digital audio of the HDMI to MIPI chip.

In addition, the processor is also provided with LVDS and EDP interfaces, the HDMI interface, the VBO interface, the LVDS interface and the EDP interface are respectively used for inputting video signals to the screen, the video output interface function of the core mainboard of the application is greatly enriched, and the core mainboard can have rich screen interfaces. For example, a series product design can be realized by EDP (for connecting various small screens below 15 inches), LVDS (for connecting various screens of 15 inches to 32 inches), VBO (for connecting 32 inches to 100 inches 4K high-definition screens), and a core motherboard in cooperation with a corresponding specification power board. In addition, two HDMI output interfaces and a TYPE-C interface can be arranged externally and can be directly connected with a TYPE-C display.

the PCIE-to-multi-path USB circuit is used for expanding the PCIE audio interface into a plurality of audio interfaces connected with the USB sound card.

The audio processing device may have a rich audio interface, and for example, in an application example, the audio processing device may have two SPDIF outputs, two IIS outputs, and 5 IIS input interfaces, and 5 USB sound cards implement input and output capabilities of another 10 sound channels. Accumulating audio interfaces that can achieve 16 channel output, 24 channel input, 7.2.4(7 surround, 2 subwoofers, 4 sky channels) panoramic audio transfer capability and multi-channel recording functionality.

The core motherboard also has rich communication interfaces, such as HID (driver free control interface), SPI, IIC, GPIO, UART. All communication and control functions are completed through the HID and the audio digital board MCU; the peripheral extended function chip of the CPU is controlled by the IIC and the SPI; GPIO realizes the key function; the UART realizes the communication control between the CPU and the two-dimension code scanner device.

In one embodiment, the HID device interface is used to connect and transmit control signals for establishing communication between the core motherboard and the audio digital board. In one embodiment, the IIC interface and the SPI interface are respectively configured to output a control signal to a peripheral extended function chip connected to the core motherboard. In one embodiment, the GPIO interface is configured to transmit a key press signal for the processor. In one embodiment, the UART interface is used to connect and transmit control signals for establishing communication between the processor and the two-dimensional code scanner.

Can also dispose abundant network connection interface RJ, WIFI, 4G on the core mainboard, can satisfy all scene network user demands, a four-port switch chip has still been integrateed to the core mainboard inside for found a small-size LAN and realize the network extended function, possess bluetooth transceiver function simultaneously, can be connected with all equipment that have bluetooth function, like bluetooth remote controller, bluetooth speaker, bluetooth for example.

In one embodiment, a plurality of communication interfaces are arranged on a processor of the core mainboard, the processor is connected with one or more peripheral devices of a microphone, a motion capture camera, a two-dimensional code scanner and a live broadcast acquisition camera through the communication interfaces, and the processor transmits data and control signals with the peripheral devices through the communication interfaces.

The core mainboard can also be equipped with the work with abundant peripheral equipment, and the core mainboard can be connected with peripheral equipment, and peripheral equipment can include in microphone array, motion capture camera, two-dimensional code scanner and the camera one or more, if: the microphone array realizes the functions of voice acquisition and intelligent voice interaction; the motion capture camera is used for face recognition, motion image acquisition, and the like to realize the functions of judging the motions of the dance game; the two-dimensional code scanner is used for realizing a payment function; the camera is used for shooting videos and images and realizing the functions of live video and the like.

As shown in fig. 3, fig. 3 is a schematic structural diagram of an audio digital board according to an embodiment. In one embodiment, the audio digital board comprises a programmable logic array and a digital signal processor supporting multiple audio signal processing, wherein the programmable logic array is connected with the digital signal processor, and the digital signal processor is used for processing the coded audio stream of the TDMA.

When multiple channels are encountered, the technology of one-line multiple channels can be realized by expanding the data lines of the TDMA.

The audio digital board can simultaneously support the data code stream of IIS and also can support the coded audio stream of TDMA.

As shown in fig. 4, fig. 4 is a schematic diagram of an audio analog circuit. In one embodiment, the audio analog circuit includes a power management module (shown as a power system in fig. 4); the power management module is used for controlling the power-on time sequence in the audio processing device according to the working state of the audio processing device.

The audio frequency analog circuit adopts a unique power supply design, such as directly generating positive and negative power supplies required by the system from 12V and other logic power supplies. And the management of the power receiving system follows the power-on sequence of the system. The design of the part enables a unique design idea to well avoid the need of using an analog transformer, and the reduction degree and the softness degree of sound are not worse than those of a system using a ring transformer. Referring to fig. 5 and 6, fig. 5 is a power management state diagram in one embodiment, and fig. 6 is a power management timing diagram.

In an embodiment, the present application further provides a karaoke circuit board, including the audio processing device according to any of the above embodiments, where the audio processing device is connected to an on-demand system to obtain an on-demand video, the audio processing device is connected to a screen through a video interface, and an audio analog circuit of the audio processing device is connected to a microphone and an audio playing device, respectively.

The on-demand system can be used for on-demand karaoke videos and acquiring on-demand videos.

In the karaoke circuit board, a plurality of audio interfaces are integrated on the core main board, a plurality of audio data transmission channels are arranged between the core main board and the audio digital board, the audio digital board can collect and superpose a plurality of audio data streams, different audio input data and audio output data can be matched more flexibly in practical use, the audio interfaces are more flexible and convenient to use, the karaoke circuit board with the audio processing device can be connected with various types of screens, the screens of various types can be improved into a device with the karaoke audio processing capacity, and the compatibility of the karaoke circuit board is improved.

In one embodiment, the present application further provides a multifunctional television all-in-one machine system, which includes a television and the karaoke circuit board according to any one of the above embodiments, wherein the karaoke circuit board is connected to the television through a video interface and an audio interface, respectively.

In the multifunctional television all-in-one machine system, a plurality of audio interfaces are integrated on the core mainboard, a plurality of audio data transmission channels are arranged between the core mainboard and the audio digital board, a plurality of audio data streams can be collected and superposed by the audio digital board, different audio input data and audio output data can be matched more flexibly in practical use, the abundant audio interfaces and the video interfaces are convenient for matching the connection of various types of televisions, the televisions with various interfaces can be improved into the television with the audio processing capability of karaoke, and the multifunctional television all-in-one machine system has high compatibility.

Under the scene that the user was installed certainly, this high compatibility can let the user match out the applicable interface easily and fast, carries out the installation of multifunctional television all-in-one system, promotes user experience.

In one embodiment, the power board in the audio processing device can select suitable power according to different screen sizes, and the multi-core flat cable is connected with the core main board.

In one embodiment, a unique power supply inversion technology can be adopted to invert the 12V power supply of the system so as to meet the use requirement of an audio analog circuit. The robustness and high expandability of the audio frequency analog circuit are improved, and the sound of a microphone and music can have the warm and moist permeability of analog loop change.

In one embodiment, an interface module can be configured, and a large number of connection interfaces for accessing audio and video data transmission channels are integrated, so that a microphone, an analog circuit, a sound box system and the like can be independently and rapidly connected to the interface module in an iterative manner.

In one embodiment, song resources can be stored and managed in a distributed storage and data sharing mode. The equipment can rapidly access song resources at low cost, and high-speed and high-definition audio and video resource sharing is realized.

In one embodiment, the karaoke integrated television can adopt a centralized bus mode through the karaoke circuit board, and a local area network is independently closed through a host and a device system connected with the host. The local area network can realize internal hardware management and program upgrading to make system upgrading and other operations, so that the hardware systems are organically connected to form a whole.

As shown in fig. 2, in terms of video interface, the core motherboard of the present application can almost meet various screen sizes, and therefore, can be conveniently used for core motherboards of television sets of various sizes.

Due to the limitation of the number of CPU interfaces in the core mainboard, a large number of interface circuits are adopted to expand the functions required by the mainboard design.

In one embodiment, the core motherboard further includes a PCIE-to-multi-USB expansion circuit, where the PCIE-to-multi-USB expansion circuit is configured to expand a plurality of USB interfaces connected to the USB sound card for the processor;

in one embodiment, the processor is provided with an SPDIF audio output interface, two IIS audio output interfaces and five IIS audio input interfaces.

In one embodiment, the processor is provided with a plurality of communication interfaces, and the communication interfaces comprise an HID driving-free protocol interface, an SPI interface, an IIC communication interface, a GPIO interface and a UART interface.

In one embodiment, 12V can be used as a main power supply for core motherboard power supply, 5V is a standby power supply, only the 5V power supply works in standby state, and the 12V power supply is completely turned off, so that the national 1W standby power consumption requirement can be met.

The FPGA in the audio digital board is the core of the processing of the signal stream, as shown in fig. 3, and the processing of the superposition and distribution of the channel coding of the signal input and output is realized. The DSP effect processor realizes the processing technology of multi-channel audio signal separation, and the technology is different from all DSP effect processors on the market in processing modes and belongs to a unique processing technology framework. The MCU part realizes the parameter configuration of the FPG and the DSP and the system setting work, and simultaneously bears the function of communication with the host.

In one embodiment, the data stream acquisition and superposition of hardware are realized by adopting the FPGA in the audio digital board, so that different input data and output data can be matched more flexibly in practical use, and the interface is flexible and convenient. When in use, the system can be adapted to other systems with various format interfaces only by making tiny changes.

In one embodiment, the DSP in the audio digital board adopts a completely new algorithm framework to support independent adjustment of multiple signals. The effect of each input and output is different, and one set of system can fully exert the sound ray characteristics of each person.

In one embodiment, the audio digital board is added with an ultra-low delay network audio technology to realize multi-person chorus, antiphonal singing and rotary singing in a local area network. The singer can feel the fun of singing at the same time in different places.

In one embodiment, the bus-type interface mode is integrated, so that the design can be accessed to different platforms as long as the platform adopts the same interface mode, and thus, the platform transplantation related to high, medium and low ends is extremely simple and convenient.

In one embodiment, the design idea of digital-analog separation is adopted between the audio digital board and the audio analog circuit, so that the design of the power supply can be simplified. The audio frequency analog circuit can eliminate the interference of the digital system outside the analog system only by adopting an effective isolation means. The whole design is extremely simple, and the product is designed from the perspective of a module.

In one embodiment, the wireless microphone is designed using a standard external module. The interface adopts a common TYPE-C interface on the market. The interface is redefined according to the characteristics of the signal. The control connection of the wireless microphone is simple and convenient. Meanwhile, the shielding problem that the wireless module is placed in the case is solved, so that the wireless transmission distance and the anti-interference capability are greatly improved. The wireless module is added with industrial bus communication for realizing the control of the module. The multi-module combination and the sub-control can be realized, and the module is more flexible and concise to use.

In one embodiment, the wireless audio is designed using standard external modules. The interface adopts a common TYPE-C interface on the market. The interface is redefined according to the characteristics of the signal. And a 5.8G frequency band with stronger interference resistance is adopted. Meanwhile, the shielding problem that the wireless module is placed in the case is solved, so that the wireless transmission distance and the anti-interference capability are greatly improved. Meanwhile, the convenience of system installation is facilitated, and the situation that the whole decoration is damaged due to the fact that wiring is conducted for the volume in a room is avoided.

In one embodiment, the audio frequency analog circuit adopts a unique power supply design, and positive and negative power supplies and other logic power supplies required by the system are directly generated from 12V. And the management of the power receiving system follows the power-on sequence of the system. The design of the part enables a unique design idea to well avoid the need of using an analog transformer, and the reduction degree and the softness degree of sound are not worse than those of a system using a ring transformer. Referring to fig. 5 and 6, fig. 5 is a power management state diagram in one embodiment, and fig. 6 is a power management timing diagram.

In one embodiment, three-up, three-down independent IIS signals can be used as input and output of the system sound source in the audio analog circuit, and the independent sound track can meet different application scene requirements. The flexibility and compatibility of the design of the system are greatly satisfied.

In one embodiment, a high-speed system isolation scheme is adopted in the audio analog circuit, so that the design is simplified, and common ground noise introduced by the system due to multi-stage cascade is avoided. The debugging and the production become simple and easy.

In one embodiment, the core motherboard includes a processor and a PCIE-to-multi-USB expansion circuit, where the PCIE-to-multi-USB expansion circuit is used to expand a plurality of USB audio interfaces connected to the USB sound card for the processor.

In one embodiment, the core motherboard comprises a processor, an expansion interface circuit and a MIPI-to-HDMI chip; the expansion interface circuit expands a native HDMI video output interface of the processor to include at least one HDMI video output interface and at least one VBO interface; and converting a native MIPI DSI interface of the processor into an HDMI video output interface through the MIPI-to-HDMI chip.

In one embodiment, the core motherboard includes a processor, an HDMI multiplexer, and an HDMI-to-MIPI chip; sequentially connecting a CPU MIPI CSI interface of the processor through an HDMI multi-path selection switch and an HDMI-to-MIPI chip, and converting the CPU MIPI CSI interface into an HDMI signal video input interface; and the HDMI to MIPI chip is also used for outputting SPDIF digital audio of the HDMI signal audio signal to the audio digital board.

In one embodiment, a plurality of communication interfaces are arranged on the processor, the processor is connected with one or more peripheral devices of a microphone, a motion capture camera, a two-dimensional code scanner and a live broadcast acquisition camera through the communication interfaces, and the processor transmits data and control signals with the peripheral devices through the communication interfaces.

In one embodiment, the core motherboard further comprises a network connection module connected to the processor; the network connection module is provided with an Ethernet interface and also comprises a WiFi module used for providing a WiFi network communication interface and a mobile communication module used for accessing a mobile communication network.

In one embodiment, the audio digital board further comprises an ultra-low delay network audio module connected to the switch module, the ultra-low delay network audio module connected to the programmable logic array; the switch module is used for constructing a local area network; the ultra-low delay network audio module is used for synchronizing audio data acquired from the local area network.

In one embodiment, a switch chip for constructing a local area network is integrated on the core motherboard.

In one embodiment, the core mainboard is provided with an audio output interface of the TYPE-C interface.

In one embodiment, a drive-free control interface is arranged on the processor, and the drive-free control interface is used for establishing communication connection between the core main board and the audio digital board and transmitting control signals; the drive-free control interface is a control interface under a drive-free protocol.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims

1. The audio processing device is characterized by comprising a core mainboard, an audio digital board and an audio analog circuit;

2. The audio processing apparatus according to claim 1, wherein a plurality of video interfaces and audio interfaces are disposed on the core motherboard; the core mainboard and the audio digital board are connected through a board connector, each audio interface is arranged on the board connector, and a plurality of audio transmission channels are integrated between the core mainboard and the digital board.

3. The audio processing apparatus according to claim 1, wherein the core motherboard comprises a processor and a video interface extension circuit connected to a native video interface of the processor;

the video interface expansion circuit comprises a video output interface expansion circuit, and the native video interface comprises a native video output interface; the video output interface expansion circuit expands the native video output interface to include at least one HDMI video output interface and at least one VBO video output interface;

and/or the presence of a gas in the gas,

4. The audio processing device according to claim 3, wherein the audio interface expansion circuit further comprises a PCIE-to-multi-USB circuit and/or an HDMI receiving chip, and the native audio interface comprises a PCIE audio interface;

the HDMI receiving chip comprises at least one audio output interface, the audio output interface is connected to the first board connector to enable the first board connector to be connected to the audio digital board, and the HDMI receiving chip is used for receiving audio data through the HDMI interface and outputting the audio data through the audio output interface on the HDMI receiving chip.

5. The audio processing device of claim 1, wherein the audio digitizer is further configured to receive audio data input from a digital microphone and/or a wireless microphone, to wirelessly output audio data, and to input audio data to a wired transmission medium.

6. The audio processing device of claim 1, wherein the audio digital board comprises a programmable logic array and a digital signal processor supporting multiple audio signal processing, the programmable logic array being connected to the digital signal processor, the digital signal processor being configured to perform TDMA encoded audio stream processing.

7. The audio processing device according to claim 1, wherein the audio analog circuit comprises a power management module;

8. The audio processing device according to claim 1, wherein a plurality of communication interfaces are provided on a processor of the core motherboard, the processor is connected to one or more peripheral devices selected from a microphone, a motion capture camera, a two-dimensional code scanner, and a live broadcast capture camera through the communication interfaces, and the processor transmits data and control signals to the peripheral devices through the communication interfaces;

and/or the presence of a gas in the gas,

the core mainboard further comprises a network connection module connected with the processor, an Ethernet interface is arranged in the network connection module, and the network connection module further comprises a WiFi module used for providing a WiFi network communication interface and a mobile communication module used for accessing a mobile communication network.

9. A karaoke circuit board, comprising the audio processing device as claimed in any one of claims 1 to 8, wherein said audio processing device is connected to a video-on-demand system to obtain video-on-demand, said audio processing device is connected to a screen through a video interface, and an audio analog circuit of said audio processing device is connected to a microphone and an audio playing device, respectively.

10. A multifunctional television all-in-one system comprising a television and the karaoke circuit board as set forth in claim 9, said karaoke circuit board being connected to said television via a video interface and an audio interface, respectively.