CN220511167U

CN220511167U - Audio-video device and electronic equipment

Info

Publication number: CN220511167U
Application number: CN202320164763.4U
Authority: CN
Inventors: 张国营; 陈林锋
Original assignee: Zhuhai Shixi Technology Co Ltd
Current assignee: Zhuhai Shixi Technology Co Ltd
Priority date: 2023-01-19
Filing date: 2023-01-19
Publication date: 2024-02-20
Anticipated expiration: 2033-01-19

Abstract

The utility model discloses an audio-video device and electronic equipment, wherein the audio-video device comprises a core board and an expansion board connected with the core board, a controller is arranged on the core board, an audio module, an image acquisition module, a screen display module, a multimedia interface module, a communication module and a power module are arranged on the expansion board, wherein the controller is electrically connected with the audio module through a system bus, the controller is electrically connected with the image acquisition module, the screen display module, the multimedia interface module and the communication module, and the power module is electrically connected with the controller, the audio module, the image acquisition module, the screen display module, the multimedia interface module and the communication module. The utility model improves the integration level of the audio-video device, reduces the volume of the audio-video device, is suitable for small conference room scenes, and improves the convenience of the audio-video device.

Description

Audio-video device and electronic equipment

Technical Field

The utility model belongs to the technical field of electronics, and particularly relates to an audio and video device and electronic equipment.

Background

With the development of society, many companies or individuals select an online conference teleoffice mode and an online education mode for online teaching. The audio-video device is needed for online conference teleoffice and online education of network teaching, and is a device integrating audio technology, video technology, network technology and centralized control technology.

The audio-video device comprises a plurality of functional boards, and different functional boards are respectively connected with the camera, the display screen, the gateway equipment and the like so as to realize functions of audio-video, display, network transmission and the like.

The function board of the existing audio-video device is distributed in a scattered mode, the distribution is disordered, the circuit layout is complex, the interference of the ground loop effect inside the cable to the audio signal is serious, the audio playing effect is poor, and the existing audio-video conference device is large in size and only suitable for large and medium conference room scenes.

Disclosure of Invention

In view of this, the utility model provides an audio-video device and an electronic device, which mainly aims to solve the problems that the existing audio-video device has large volume and low integration level and is only suitable for large and medium conference room scenes.

In order to solve the problems, the application provides an audio-video device, which comprises a core board and an expansion board connected with the core board, wherein the core board is provided with a controller, the expansion board is provided with an audio module, an image acquisition module, a screen display module, a multimedia interface module, a communication module and a power module,

the controller is electrically connected with the audio module through a system bus, the controller is electrically connected with the image acquisition module, the screen display module, the multimedia interface module and the communication module, and the power module is electrically connected with the controller, the audio module, the image acquisition module, the screen display module, the multimedia interface module and the communication module.

In one embodiment of the present utility model, optionally, the system bus includes a first audio bus, a second audio bus, a first serial bus, and a second serial bus, and the audio module includes: an audio encoding and decoding unit, an audio digital-to-analog conversion unit and an audio power amplifying unit, wherein,

the audio coding and decoding unit is electrically connected with the controller through the first audio bus and the first serial bus, the audio coding and decoding unit is electrically connected with the audio power amplifying unit through an internal audio bus, the input end of the audio coding and decoding unit is electrically connected with the microphone array, the audio digital-to-analog converting unit is electrically connected with the controller through the second audio bus, and the audio power amplifying unit is electrically connected with the controller through the second serial bus.

In one embodiment of the present utility model, optionally, the image acquisition module includes: and the USB interface and/or the mipi protocol interface are/is electrically connected with the first mipi signal receiving and transmitting end of the controller, and the USB interface is/is electrically connected with the USB data receiving and transmitting end of the controller.

In one embodiment of the present utility model, optionally, the screen display module includes: the screen data interface and the first interface conversion unit, wherein the input end of the first interface conversion unit is electrically connected with the second mipi signal receiving and transmitting end of the controller, the output end of the first interface conversion unit is electrically connected with the first input end of the screen data interface, and the second input end of the screen data interface is electrically connected with the second mipi signal receiving and transmitting end of the controller.

In one embodiment of the present utility model, optionally, the multimedia interface module includes a multimedia signal transmission unit, a multimedia signal transmission/reception sharing unit, a second interface conversion unit, and a first switching unit, wherein,

the input end of the multimedia signal transmitting unit is electrically connected with the multimedia signal transmitting end of the controller, the signal receiving end of the multimedia signal transmitting and receiving sharing unit is electrically connected with the public end of the first switching unit, the first end of the first switching unit is electrically connected with the multimedia signal receiving end of the controller, the second end of the first switching unit is electrically connected with the first end of the second interface switching unit, and the second end of the second interface switching unit is electrically connected with the second mipi signal receiving end of the controller.

In one embodiment of the present utility model, optionally, the communication module includes: an RJ45 network interface unit, a WiFi unit and a USB interface unit, wherein,

the RJ45 gateway unit comprises: the device comprises an Ethernet conversion chip and an RJ45 socket, wherein the MAC data receiving and transmitting end of the Ethernet conversion chip is electrically connected with the Ethernet data receiving and transmitting end of the controller, and the port data receiving and transmitting end of the Ethernet conversion chip is electrically connected with the RJ45 socket.

In one embodiment of the present utility model, optionally, the USB interface unit includes: a USB hub, at least one USB3.0 interface, a USB2.0OTG type-c interface, and a second switching unit, wherein,

the public end of USB concentrator with USB data receiving and dispatching end electricity of controller is connected, USB concentrator's extension end with USB3.0 interface electricity is connected, the control end of second switching element with the control signal output of controller is connected, the output of second switching element with the switching signal input of USB2.0OTG type-c interface is connected electrically, the data receiving and dispatching end of USB2.0OTG type-c interface respectively with USB data receiving and dispatching end and type-c data receiving and dispatching end of controller are connected electrically.

In an embodiment of the present utility model, optionally, one or more modules of a memory card base, an infrared module, a status indication module, a key module, a flash interface, a fan interface, a serial bus interface, and a JTAG interface are further provided on the expansion board.

In one embodiment of the utility model, the expansion board and the core board are optionally connected by a stamp hole connection, a board edge connector connection or a board to board connector connection.

The utility model also provides electronic equipment, which comprises the audio-video device, display equipment with the audio-video device or external display equipment and camera equipment, wherein the display equipment comprises at least one screen of a mipi screen, an LVDS screen and a Vbyone screen, and the camera equipment comprises at least one camera of a UVC protocol and a mipi protocol.

According to the audio and video device and the electronic equipment, the core board provided with the controller is used as the main control equipment, and the audio module, the image acquisition module, the screen display module, the multimedia interface module, the communication module and the power module are arranged on the expansion board connected with the core board, so that the distribution of the core board and the audio module, the image acquisition module, the screen display module, the multimedia interface module, the communication module and the power module is compact, meanwhile, the circuit layout is simple, the hardware modules are convenient to connect, the integration level of the audio and video device is improved, the volume of the audio and video device is reduced, the audio and video device is applicable to small conference room scenes, and the convenience of the audio and video device is improved.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

fig. 1 is a block diagram of an audio/video apparatus according to an exemplary embodiment of the present utility model;

fig. 2 is another block diagram of an audio/video apparatus according to an exemplary embodiment of the present utility model;

fig. 3 is a schematic circuit diagram of an audio module of an audio-video device according to an exemplary embodiment of the present utility model;

fig. 4 is a schematic circuit diagram of a portion of a screen display module of an audio/video device according to an exemplary embodiment of the present utility model;

fig. 5a and fig. 5b are schematic circuit diagrams illustrating a portion of a multimedia interface module of an audio/video device according to an exemplary embodiment of the present utility model;

wherein,

the reference numerals of fig. 1-5 are as follows: 10-core plate; 11-a controller; 20-expansion board; 21-an audio module; 22-an image acquisition module; 23-a screen display module; 24-a multimedia interface module; 25-a communication module; 26-a power module; 211-an audio codec unit; 212-an audio digital-to-analog conversion unit; 213-an audio power amplifying unit; 214-a headphone jack; 215-a microphone array; 216-a stereo sound player; a 221-USB interface; 222-mipi protocol interface; a 223-UVC camera; 224-mipi camera; 232-a first interface conversion unit; 231-screen data interface; 233-display screen; 241-a multimedia signal transmission unit; 242-a multimedia signal transmitting and receiving sharing unit; 243-a second interface conversion unit; 244-a first switching unit; 251-ethernet conversion chip; 252-RJ45 jack; 253-WiFi unit; 254-USB hub; 255-USB3.0 interface; 256-a second switching unit; 257-USB2.0 OTG type-c interface.

Detailed Description

The utility model will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In order to further describe the technical means and effects adopted for achieving the preset aim of the utility model, the following detailed description refers to the specific implementation, structure, characteristics and effects according to the application of the utility model with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

An audio-visual apparatus according to some embodiments of the present utility model is described below with reference to fig. 1 to 5.

In one embodiment, as shown in fig. 1, an audio-video device includes a core board 10 and an expansion board 20 connected with the core board, where the core board 10 is provided with a controller 11, and the expansion board 20 is provided with an audio module 21, an image acquisition module 22, a screen display module 23, a multimedia interface module 24, a communication module 25, and a power module 26, where the controller 11 is electrically connected with the audio module 21 through a system bus, and the controller 11 is electrically connected with the image acquisition module 22, the screen display module 23, the multimedia interface module 24, and the communication module 25, and the power module 26 is electrically connected with the controller 11, the audio module 21, the image acquisition module 22, the screen display module 23, the multimedia interface module 24, and the communication module 25.

Specifically, the controller is arranged on the core board, the audio module, the image acquisition module, the screen display module, the multimedia interface module, the communication module and the power module are integrally arranged on the expansion board, the core board is connected with the expansion board, the controller is respectively connected with the audio module, the image acquisition module, the screen display module, the multimedia interface module and the communication module through wires distributed on the core board and the expansion board, the audio module is used for receiving voice and/or playing voice, the image acquisition module is used for connecting image acquisition equipment such as a UVC camera or a mipi camera and the like so as to acquire images of scenes, the screen display module is used for connecting the display screen so as to display images or files, the screen display module can also be externally connected with the display screen, screens of different sizes can be connected or be used with the screen according to requirements, the multimedia interface module is a high-definition multimedia interface (HDMI, hi-Definition Multimedia Interface), the high-definition multimedia interface is a full-digital image and sound transmission interface, and can transmit uncompressed audio signals and video signals, and the communication module is used for connecting gateway equipment, receiving instructions of a cloud server or external equipment or connecting external equipment.

In this embodiment, it should be noted that, the functions implemented by the controller may be implemented by a program in the prior art, and the technical effects implemented by the present application are mainly implemented by relying on the connection relationship between the modules.

Compared with the prior art, the audio and video device provided by the utility model has the advantages that the core board provided with the controller is used as the main control equipment, and the audio module, the image acquisition module, the screen display module, the multimedia interface module, the communication module and the power module are arranged on the expansion board connected with the core board, so that the distribution of the core board and the audio module, the image acquisition module, the screen display module, the multimedia interface module, the communication module and the power module is compact, meanwhile, the circuit layout is simple, the hardware modules are convenient to connect, the integration level of the audio and video device is improved, the volume of the audio and video device is reduced, the audio and video device is applicable to small conference room scenes, and the convenience of the audio and video device is improved.

In one embodiment, the core board further includes a memory chip (e.g., DDR, flash), a power management chip, a clock oscillator, and a peripheral interface, among others.

In one embodiment, the power module includes a socket input unit inputting a voltage of 12V (typical value) and a step-down unit converting the voltage into 5V (typical value) and supplying power to each module of the expansion board and the core board.

In one embodiment, as shown in fig. 2, the system bus includes a first audio bus (I2S 1 bus in fig. 2), a second audio bus (I2S 2 bus in fig. 2), a first serial bus (SPI bus in fig. 2), and a second serial bus (I2C bus in fig. 2), and the audio module includes: the audio codec unit 211, the audio digital-to-analog conversion unit 212 and the audio power amplification unit 213, wherein the audio codec unit 211 is electrically connected with the controller 11 through a first audio bus and a first serial bus, the audio codec unit 211 is electrically connected with the audio power amplification unit 213 through an internal audio bus (I2S 3 bus in fig. 2), an input end of the audio codec unit 211 is electrically connected with the microphone array 215, the audio digital-to-analog conversion unit 212 is electrically connected with the controller 11 through a second audio bus, the audio digital-to-analog conversion unit 212 is also electrically connected with the earphone jack 214, the audio power amplification unit 213 is electrically connected with the controller 11 through a second serial bus, and an output end of the audio power amplification unit 213 is electrically connected with the stereo sound player 216.

Specifically, the Audio CODEC unit (CODEC module) is connected to the controller through a first Audio bus (Inter-IC Sound bus, I2S bus for short) and a first serial bus (SPI, serial Perripheral Interface), and is connected to the Audio power amplifier unit (Audio PA module) through an internal Audio bus (Inter-IC Sound bus, I2S bus for short) and the Audio CODEC unit is connected to the microphone array and the speaker power amplifier for receiving Sound, recording Sound, and/or playing Sound. The Audio digital-to-analog conversion unit (Audio ADC module) is connected with the controller through a second Audio bus (an Inter-IC Sound bus is also called an integrated circuit built-in Audio bus), and the Audio digital-to-analog conversion unit is connected with a 4-section 3.5mm earphone for receiving Sound, recording Sound and/or playing Sound. The Audio power amplifying unit (Audio PA module) is connected with the controller through a second serial bus (I2C, inter-Integrated Circuit), and the Audio power amplifying unit is connected with the stereo loudspeaker for playing sound.

In this embodiment, as shown in fig. 3, the controller 11 is connected with the audio codec unit 211 through an I2S bus and an SPI bus, the audio codec unit 211 is connected with the microphone array 215, and the audio codec unit 211 is also connected with the audio power amplifying unit 213 and the audio digital-to-analog conversion unit 212; the controller 11 is connected with the audio power amplifying unit 213 through an I2S bus and an I2C bus, and the audio power amplifying unit 213 is connected with the stereo sound player 216; the controller 11 is connected with the audio digital-to-analog conversion unit 212 through an I2S bus and an I2C bus, and the audio digital-to-analog conversion unit 212 is connected with the earphone jack 214; since the audio codec unit 211, the audio digital-to-analog conversion unit 212, and the audio power amplification unit 213 are respectively connected to the controller 11 through the I2S bus, a bus buffer 217 is added, and a wifi/bluetooth interface chip 218 is also provided.

In one embodiment, as shown in FIG. 2, the image acquisition module 22 includes: the USB interface 221 and/or the Mipi protocol interface 222, where the Mipi protocol interface 222 is electrically connected to a first Mipi signal transceiver of the controller 11, the first Mipi signal transceiver is a pin for implementing Mipi CSI protocol signal transceiver, the USB interface 221 is electrically connected to a USB data transceiver of the controller 11, and the USB data transceiver is a pin for implementing USB data transceiver.

Specifically, both the mipi protocol interface 222 and the USB interface 221 require a camera to interface with the peripheral. The mipi protocol interface 222 may interface with a single mipi camera 224 or multiple mipi cameras 224. The UVC camera 223 may be connected when the USB interface 221 is set to the USB host mode, and the USB interface 221 may be any USB2.0 interface or USB3.0 interface set to the USB host mode, which may be directly connected to the controller or may be extended through a USB hub. The image acquisition module can be connected with one mipi camera or a plurality of mipi cameras or UVC cameras, and also can be connected with the UVC camera and at least one mipi camera simultaneously, and the mipi cameras and the UVC cameras are all used for acquiring images.

In one embodiment, as shown in FIG. 2, the screen display module 23 includes: the screen data interface 231 and the first interface conversion unit 232, wherein, the input end of the first interface conversion unit 232 is electrically connected with the second Mipi signal receiving and transmitting end of the controller 11, the second Mipi signal receiving and transmitting end is a pin for realizing the Mipi DSI protocol signal receiving and transmitting, the output end of the first interface conversion unit 232 is electrically connected with the first input end of the screen data interface 231, the second input end of the screen data interface 231 is electrically connected with the second Mipi signal receiving and transmitting end of the controller, and the output end of the screen data interface 231 is electrically connected with the display screen 233.

In one embodiment, the screen display module 23 further includes a display screen 233, i.e., the display screen 233 is a display screen of the audio-visual apparatus itself.

In one embodiment, the display screen 233 may also be a screen external to the audio-visual apparatus.

Specifically, the display screen 233 includes at least one screen of a mipi screen, an LVDS screen, and a vbzone screen, and the number and type of display screens are determined according to scene needs.

When the display screen is a mipi screen, the controller outputs an image signal in the form of a mipi interface to the screen data interface, which transmits the image signal to the mipi screen. When the display screen is an LVDS screen, the controller outputs an image signal in the form of a mipi interface to the first interface conversion unit, the image signal in the form of the mipi interface is converted into an image signal in the form of an LVDS interface by the first interface conversion unit, the image signal is output to the screen data interface, and the image signal in the form of the LVDS interface is transmitted to the LVDS screen by the screen data interface. When the display screen is a vbzone screen, the controller outputs an image signal in the form of a mipi interface to the first interface conversion unit, converts the image signal in the form of the mipi interface into an image signal in the form of a vbzone interface through the first interface conversion unit, outputs the image signal in the form of the vbzone interface to the screen data interface, and transmits the image signal in the form of the vbzone interface to the LVDS screen through the screen data interface.

In one embodiment, the screen display module further includes a backlight driving module. The display screen is provided with a backlight module, the backlight module provides enough brightness and uniformly distributed light sources for the display screen, so that the screen can normally display images, the power input end of the backlight driving module is connected with the output end of the power module to obtain a working power supply, the backlight driving signal output end of the backlight driving module is connected with the backlight driving signal input end of the display screen, and the backlight driving module outputs a backlight driving signal to the display screen to drive the backlight module of the display screen to emit light.

As a preferred implementation manner of this embodiment, as shown in fig. 4, the first interface conversion unit 232 is an MIPI-to-LVDS chip, a part of pins of the first interface conversion unit 232 are connected to the controller 11, a part of pins of the first interface conversion unit 232 are connected to the screen data interface 231, the screen data interface 231 may be connected to an LVDS screen or a vbzone screen or a MIPI screen, and the LVDS screen or the vbzone screen or the MIPI screen may be a display screen of an audio/video device, or may be an external display screen.

In one embodiment, as shown in fig. 2, the multimedia interface module includes a multimedia signal sending unit 241, a multimedia signal sending and receiving sharing unit 242, a second interface conversion unit 243, and a first switching unit 244, where an input end of the multimedia signal sending unit 241 is electrically connected to a multimedia signal sending end of the controller 11, the multimedia signal sending end is a multimedia signal sending pin, sending of an HDMI signal is implemented, a signal receiving end of the multimedia signal sending and receiving sharing unit 242 is electrically connected to a common end of the first switching unit 244, a first end of the first switching unit 244 is electrically connected to a multimedia signal receiving end of the controller 11, the multimedia signal receiving end is a multimedia signal receiving pin, receiving of an HDMI signal is implemented, a second end of the first switching unit 244 is electrically connected to a first end of the second interface conversion unit 243, and a second end of the second interface conversion unit 243 is electrically connected to a second mipi signal receiving end of the controller 11.

Specifically, the controller transmits the multimedia signal (HDMI, high Definition Multimedia Interface) to the multimedia signal transmitting unit, through which it is transmitted to the external device. When the multimedia signal transmitting and receiving sharing unit is used as a receiving unit through the switching processing of the first switching unit, the multimedia signal transmitted by the external equipment is received, and the received multimedia signal is transmitted to the controller. Through the switching processing of the first switching unit, when the multimedia signal transmitting and receiving sharing unit is used as a transmitting unit, the controller transmits data in the form of a mipi signal to the second interface conversion unit through the second mipi signal receiving and transmitting end, the data in the form of the mipi signal is converted into multimedia data, namely an HDMI signal through the conversion of the second interface conversion unit, the multimedia data is transmitted to the peripheral equipment through the multimedia signal transmitting and receiving sharing unit, and the second mipi signal receiving and transmitting end is a pin for realizing the transmission and the reception of the mipi DSI protocol signal.

In this embodiment, as shown in fig. 5a and 5b, it should be noted that, due to the large circuit diagram, the circuit diagram is split into two parts, and fig. 5a and 5b combine to illustrate the circuit structure of the second interface conversion unit 243, and the second interface conversion unit 243 is an MIPI-to-HDMI chip, so as to convert data in the form of MIPI interface into data in the form of HDMI interface.

In one embodiment, as shown in fig. 2, the communication module includes: RJ45 net gape unit, wiFi unit 253 and USB interface unit, wherein, RJ45 net gape unit includes: the device comprises an Ethernet conversion chip 251 and an RJ45 socket 252, wherein a MAC data receiving and transmitting end (a pin for realizing data receiving and transmitting of a controller) of the Ethernet conversion chip 251 is electrically connected with an Ethernet data receiving and transmitting end (a pin for realizing data receiving and transmitting of the Ethernet) of the controller 11, and a port data receiving and transmitting end (a pin for realizing data receiving and transmitting of the socket) of the Ethernet conversion chip 251 is electrically connected with the RJ45 socket 252.

Specifically, the RJ45 network interface unit is used for connecting to the internet, the USB interface unit is used for receiving system firmware or connecting to external equipment, and the WiFi unit is used for receiving instructions of the cloud server or connecting to external equipment. When the controller sends data to the Internet, the Ethernet data of the controller is input to the Ethernet conversion chip, and is output to the RJ45 jack after being converted by the Ethernet conversion chip, and is transmitted to the Internet through the RJ45 jack; when the internet sends data to the controller, the internet Ethernet data is input to the Ethernet conversion chip, and is output to the controller after being converted by the Ethernet conversion chip.

In one embodiment, as shown in FIG. 2, the USB interface unit includes: USB hub 254, at least one USB3.0 interface 255, USB2.0OTG type-c interface 257 and second switching unit 256, wherein, USB hub 254's public end is connected with the USB data transceiver of controller 11 (USB data transceiver is the pin that realizes USB data transceiver), USB hub 254's extension end is connected with USB3.0 interface 255 electricity, the control end of second switching unit 256 is connected with the control signal output of controller 11 (control signal output is control signal output pin), the output of second switching unit 256 is connected with the switching signal input of USB2.0OTG type-c interface 257 electricity, USB2.0OTG type-c interface 257's data end is connected with the USB data transceiver of controller 11 (USB data transceiver is the pin that realizes USB data transceiver) and type-c data transceiver (type-c data transceiver is the pin that realizes type-c data transceiver) electricity respectively.

Specifically, the USB interface unit includes a USB3.0 interface and a USB2.0OTG type-c interface. The USB hub is arranged, the public end of the USB hub is connected with the controller, each expansion port of the USB hub is connected with one USB3.0 interface, and a plurality of USB3.0 interfaces can be connected in parallel through the USB hub, so that expansion of the USB3.0 interfaces is realized. The method comprises the steps that a second switching unit connected with a controller is arranged, the second switching unit is connected with an USB2.0OTG type-c interface, when the second switching unit receives a control signal of the controller and is used for switching the USB2.0 interface, the second switching unit switches the USB2.0OTG type-c interface into the USB2.0 interface, and when the second switching unit receives the control signal of the controller and is used for switching the type-c interface, the second switching unit switches the USB2.0OTG type-c interface into the type-c interface, so that multiplexing of the USB2.0 interface and the type-c interface is achieved.

In one embodiment, when the USB3.0 interface is set to the USB3.0 HOST mode, devices such as UVC cameras, touch screens, mice, USB discs, and the like may be externally connected.

In one embodiment, the expansion board 20 is further provided with one or more modules of a memory card base, an infrared module, a status indication module, a key module, a flash interface, a fan interface, a serial bus interface, and a JTAG interface.

Specifically, the expansion board is also provided with a plurality of other modules, such as a memory card base, for externally connecting an SD card to expand the memory capacity; the infrared module is used for receiving control signals of the infrared remote controller; the flash interface can be used for externally connecting an SPI flash data card, and downloading system firmware through the SPI flash data card; the serial bus interface (UART serial port) is used for connecting a 232 serial port or a 485 serial port for communication; a JTAG debug port for accessing an internal register of the controller; the state indicator lamp is used for indicating the working state of the audio-video module; the key is used for receiving an input instruction; the fan interface is used for connecting with a fan so as to radiate heat of the audio-video module; GPIO/SPI/I2C/PWM expansion ports, and the like.

In one embodiment, expansion board 20 and core board 10 are connected by a stamp hole connection, a board edge connector connection, or a board-to-board connector connection.

Specifically, the expansion board and the core board are connected in a plurality of modes, for example, the expansion board and the core board are connected by stamp holes, the stamp holes are connected mainly for supporting, and the board cannot be scattered; the board edge connector is also called a golden finger, and simply speaking, the expansion board is provided with a clamping groove, and the core board is inserted into the clamping groove to realize connection.

The utility model also provides electronic equipment, which comprises the audio-video device, the self-contained or external display equipment of the audio-video device, and the camera equipment, wherein the display equipment comprises at least one screen of a mipi screen, an LVDS screen and a Vbyone screen, and the camera equipment comprises at least one camera of a UVC protocol and a mipi protocol.

The electronic equipment provided by the utility model takes the core board provided with the controller as the main control equipment, and the expansion board connected with the core board is provided with the audio module, the image acquisition module, the screen display module, the multimedia interface module, the communication module and the power module, so that the distribution of the core board and the audio module, the image acquisition module, the screen display module, the multimedia interface module, the communication module and the power module is compact, the circuit layout is simple, the hardware modules are convenient to connect, the integration level of the audio and video device is improved, the volume of the audio and video device is reduced, the electronic equipment is suitable for small conference room scenes, and the convenience of the audio and video device is further improved.

It should be understood that various modifications may be made to the embodiments of the application herein. Therefore, the above description should not be taken as limiting, but merely as exemplification of the embodiments. Other modifications within the scope and spirit of this application will occur to those skilled in the art.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with a general description of the application given above and the detailed description of the embodiments given below, serve to explain the principles of the application.

These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.

It is also to be understood that, although the present application has been described with reference to some specific examples, those skilled in the art can certainly realize many other equivalent forms of the present application.

The foregoing and other aspects, features, and advantages of the present application will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present application will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the application, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the application with unnecessary or excessive detail. Therefore, specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present application in virtually any appropriately detailed structure.

The specification may use the word "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments as per the application.

The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application, the scope of which is defined by the claims. Various modifications and equivalent arrangements may be made to the present application by those skilled in the art, which modifications and equivalents are also considered to be within the scope of the present application.

Claims

1. The audio-video device is characterized by comprising a core board and an expansion board connected with the core board, wherein the core board is provided with a controller, the expansion board is provided with an audio module, an image acquisition module, a screen display module, a multimedia interface module, a communication module and a power supply module,

2. The audio-visual device of claim 1, wherein the system bus comprises a first audio bus, a second audio bus, a first serial bus, and a second serial bus, the audio module comprising: an audio encoding and decoding unit, an audio digital-to-analog conversion unit and an audio power amplifying unit, wherein,

3. The audio-visual apparatus of claim 1, wherein the image acquisition module comprises: a USB interface, and/or a mipi protocol interface, wherein,

the mipi protocol interface is electrically connected with a first mipi signal transceiver of the controller, and the USB interface is electrically connected with a USB data transceiver of the controller.

4. The audio-visual apparatus of claim 1, wherein the screen display module comprises: a screen data interface and a first interface conversion unit, wherein,

the input end of the first interface conversion unit is electrically connected with the second mipi signal receiving and transmitting end of the controller, the output end of the first interface conversion unit is electrically connected with the first input end of the screen data interface, and the second input end of the screen data interface is electrically connected with the second mipi signal receiving and transmitting end of the controller.

5. The apparatus according to claim 1, wherein the multimedia interface module comprises a multimedia signal transmission unit, a multimedia signal transmission-reception sharing unit, a second interface conversion unit, and a first switching unit, wherein,

6. The audio-visual apparatus according to claim 1, wherein the communication module comprises: an RJ45 network interface unit, a WiFi unit and a USB interface unit, wherein,

7. The audio-visual apparatus according to claim 6, wherein the USB interface unit comprises: a USB hub, at least one USB3.0 interface, a USB2.0OTG type-c interface, and a second switching unit, wherein,

8. The audio-visual device of claim 1, wherein the expansion board further comprises one or more of a memory card base, an infrared module, a status indication module, a key module, a flash interface, a fan interface, a serial bus interface, and a JTAG interface.

9. The audio-visual device of claim 1, wherein the expansion board and the core board are connected by a stamp hole connection, a board edge connector connection, or a board-to-board connector connection.

10. An electronic device, comprising the audio-visual apparatus of any one of claims 1-9, a display device on-board or external to the audio-visual apparatus, and an image capturing device, the display device comprising at least one of a mipi screen, an LVDS screen, and a Vbyone screen, the image capturing device comprising at least one camera of UVC protocol and mipi protocol.