Audio and video source switcher

Abstract

The utility model discloses an audio and video source switcher, which relates to the technical field of multimedia equipment and comprises a user interaction module and a signal switching module, and the user interaction module is connected with the signal switching module. The user interaction module is used for responding to a switching operation executed by a user and generating an audio and video source switching instruction; the signal switching module is used for controlling a current conduction link to be disconnected based on the audio and video source switching instruction and controlling a target link to be conducted so as to perform audio and video source switching; wherein the current conduction link is a link for transmitting audio and video data after the previous audio and video source switching operation, and the target link is a link which is specified by an audio and video source switching instruction and is connected with a target input interface and a target output interface in the audio and video source switcher. The audio and video source switching device can improve the audio and video source switching efficiency.

Description

Technical Field

[0001] This utility model relates to the field of multimedia equipment technology, and in particular to an audio and video source switcher. Background Technology

[0002] With the rapid development of information technology and the deepening of global interconnection, remote collaboration and entertainment methods such as multi-person video conferencing, online training, and live video streaming have become an indispensable part of modern society. These application scenarios not only require high-quality audio and video transmission, but also emphasize flexibility and interactivity to meet the needs of different users in different environments.

[0003] Currently, common audio / video source switching devices typically employ dedicated chip designs. These dedicated chips can efficiently process audio and video signals to ensure smooth switching between audio and video sources. However, because these dedicated chips differ from the hardware and software environment of computer systems, corresponding drivers usually need to be installed for them to function properly when connected to a computer. Furthermore, they often require regular maintenance due to compatibility issues, increasing usage and time costs. This also results in low audio / video source switching efficiency, thus impacting user experience.

[0004] In summary, improving the efficiency of audio and video source switching is a technical problem that urgently needs to be solved in the field of multimedia equipment technology. Utility Model Content

[0005] The main purpose of this invention is to propose an audio / video source switcher, which aims to improve the efficiency of audio / video source switching.

[0006] To achieve the above objectives, the present invention proposes an audio / video source switcher, which includes a user interaction module and a signal switching module, wherein the user interaction module is connected to the signal switching module.

[0007] The user interaction module is used to respond to the switching operation performed by the user and generate audio and video source switching instructions;

[0008] The signal switching module is used to control the currently active link to disconnect and control the target link to be active based on the audio and video source switching command, so as to perform audio and video source switching.

[0009] The currently connected link is the link through which audio and video data is transmitted after the last audio and video source switching operation, and the target link is the link specified by the audio and video source switching command that connects the target input interface and the target output interface in the audio and video source switcher.

[0010] In one embodiment, the user interaction module includes a touch button, which is used to respond to touch operations performed by the user and generate an audio / video source switching command.

[0011] In one embodiment, the user interaction module further includes a user interface for displaying audio / video source switching options and generating audio / video source switching instructions in response to user-executed interface operations.

[0012] In one embodiment, the audio / video source switcher further includes a system-on-a-chip (SoC), and the user interaction module is connected to the signal switching module through the SoC. The SoC is used to forward the audio / video source switching command to the signal switching module.

[0013] In one embodiment, the audio / video source switcher further includes an input interface module and an output interface module;

[0014] The input interface module is connected to the audio and video acquisition device and is used to acquire the audio and video source data acquired by the audio and video acquisition device.

[0015] The output interface module is connected to the audio and video playback device and is used to output the target audio and video data to be played to the audio and video playback device.

[0016] In one embodiment, the input interface module includes multiple input interfaces, the output interface module includes multiple output interfaces, the target input interface is the input interface specified by the audio / video source switching instruction among the multiple input interfaces, and the target output interface is the output interface specified by the audio / video source switching instruction among the multiple output interfaces.

[0017] In one embodiment, the audio / video source switcher further includes a USB port expansion module, the input interface is a USB input interface, and the audio / video acquisition device includes a first device;

[0018] The USB input interface is connected to the first device and the USB port expansion module respectively, and is used to transmit the first audio and video source data obtained from the first device to the USB port expansion module.

[0019] In one embodiment, the audio / video source switcher further includes an HDMI conversion chip, the input interface is an HDMI input interface, and the audio / video acquisition device further includes a second device;

[0020] The HDMI input interface is connected to the second device and the HDMI conversion chip respectively, and is used to transmit the second audio and video source data obtained from the second device to the HDMI conversion chip.

[0021] In one embodiment, the system-on-a-chip is communicatively connected to the USB port expansion module and the HDMI conversion chip, respectively, the output interface is a USB output interface, and the target audio and video data includes first audio and video data;

[0022] The USB port expansion module is used to send the first audio and video source data to the system-on-a-chip;

[0023] The system-on-a-chip is used to encode and decode the first audio and video source data to obtain the first audio and video data to be played, and output the first audio and video data to the USB output interface.

[0024] In one embodiment, the output interface is an HDMI output interface, and the target audio and video data further includes second audio and video data;

[0025] The HDMI conversion chip is also used to send the second audio and video source data to the system-on-a-chip;

[0026] The system-on-a-chip is used to encode and decode the second audio and video source data to obtain the second audio and video data to be played, and output the second audio and video data to the HDMI output interface.

[0027] This invention provides an audio / video source switcher, which includes a user interaction module and a model switching control module. The user interaction module is connected to a signal switching module. The user interaction module generates an audio / video source switching command in response to a user-executed switching operation. The signal switching module controls the current active link to disconnect and the target link to become active based on the audio / video source switching command, so as to perform audio / video source switching. The current active link is the link through which audio / video data is transmitted after the last audio / video source switching operation, and the target link is the link specified by the current audio / video source switching command that connects the target input interface and the target output interface in the audio / video source switcher.

[0028] In summary, compared to the traditional method of using dedicated chips for audio and video source switching, this application sets up a user interaction module to automatically generate audio and video source switching commands in response to user operations, and sets up a signal switching module to switch the conduction link based on the audio and video source switching commands to achieve audio and video source switching. There is no need to install dedicated chip drivers, and there are no compatibility and maintenance issues of dedicated chips, avoiding the waste of usage costs and time costs, thereby improving the efficiency of audio and video source switching. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 A schematic diagram of the structure of the first embodiment of the audio / video source switcher provided by this utility model;

[0031] Figure 2 A schematic diagram of the structure of the second embodiment of the audio / video source switcher provided by this utility model;

[0032] Figure 3 This is a schematic diagram of the audio / video source switcher architecture of the second embodiment of the audio / video source switcher provided by this utility model.

[0033] Explanation of icon numbers:

[0034] 10. User interaction module; 101. Touch button; 102. User interface; 20. Signal switching module; 30. System-on-a-chip; 40. Input interface module; 401. Input interface; 50. Output interface module; 501. Output interface; 60. USB port expansion module; 70. HDMI conversion chip.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text implies three parallel solutions. For example, "Solution 1 and / or Solution 2" includes Solution 1, or Solution 2, or a solution that simultaneously satisfies Solution 1 and Solution 2. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] This utility model proposes an audio / video source switcher.

[0040] Please see Figure 1 In the first embodiment of this utility model, the audio and video source switcher includes: a user interaction module 10 and a signal switching module 20, wherein the user interaction module 10 is connected to the signal switching module 20;

[0041] The user interaction module 10 is used to respond to the switching operation performed by the user and generate an audio / video source switching command;

[0042] The signal switching module 20 is used to control the currently connected link to disconnect and control the target link to connect based on the audio and video source switching command, so as to perform audio and video source switching.

[0043] The currently connected link is the link through which audio and video data is transmitted after the last audio and video source switching operation, and the target link is the link specified by the audio and video source switching command that connects the target input interface and the target output interface in the audio and video source switcher.

[0044] It should be noted that the audio / video source switcher of this application includes a user interaction module 10 and a signal switching module 20, and the user interaction module 10 and the signal switching module 20 are connected. The user interaction module 10 is used to monitor user operations. When a switching operation is detected by the user, it generates an audio / video source switching command corresponding to the current switching operation in response to the switching operation. It should be understood that the switching operation performed by the user is the operation that triggers the audio / video source switching command. It is a specific operation that is preset, and there is a mapping relationship between the switching operation performed by the user and the audio / video source switching command. Different switching operations correspond to different audio / video source switching commands. After receiving the audio / video source switching command generated by the user interaction module 10, the signal switching module 20 controls the current connected link to disconnect and controls the target link to connect based on the audio / video source switching command, so as to realize the audio / video source switching. Here, the currently connected link refers to the link that transmits audio and video data after the last audio / video switching operation, that is, the link that is connected when the audio / video source switching command is generated. The target link is the link between a specific input interface (hereinafter referred to as the target input interface for distinction) and a specific output interface (hereinafter referred to as the target output interface for distinction) specified by the current audio / video source switching command; that is, the link connecting the target input interface and the target output interface in the audio / video source switcher. It should be understood that disconnecting the current active link and establishing the target link based on the audio / video source switching command is equivalent to switching the audio / video source from the currently active link to the audio / video source in the target link.

[0045] Therefore, compared with the traditional method of using dedicated chips for audio and video source switching, this application sets up a user interaction module to automatically generate audio and video source switching commands in response to user operations, and sets up a signal switching module to switch the conduction link based on the audio and video source switching commands to realize audio and video source switching. There is no need to install dedicated chip drivers, and there are no compatibility and maintenance issues of dedicated chips, avoiding the waste of usage costs and time costs, thereby improving the efficiency of audio and video source switching.

[0046] Furthermore, referring to Figure 2 In the second embodiment of this utility model, the user interaction module 10 includes a touch button 101, which is used to respond to the touch operation performed by the user and generate an audio / video source switching command.

[0047] It should be noted that the user interaction module 10 includes a touch button 101, which is used to respond to touch operations and generate audio and video source switching instructions.

[0048] Furthermore, the number of touch buttons 101 in this embodiment is not specified; it can be one or more. In one feasible embodiment, when there is only one touch button 101, if there are three switchable links, referred to as the first link, second link, and third link for distinction, then the target link specified by the audio / video source switching command triggered by the user's first touch of the touch button 101 is the first link, the target link specified by the audio / video source switching command triggered by the user's second touch of the touch button 101 is the second link, the target link specified by the audio / video source switching command triggered by the user's third touch of the touch button 101 is the third link, the target link specified by the audio / video source switching command triggered by the user's fourth touch of the touch button 101 is the first link, and so on. In another feasible embodiment, when there are multiple touch buttons 101, if there are three switchable links, then each link can be set to correspond to one touch button 101. When a user touches a certain touch button 101, the target link specified by the link corresponding to that touch button 101 is automatically triggered.

[0049] In this embodiment, the user interaction module 10 further includes a user interface 102, which is used to display audio and video source switching options and generate audio and video source switching instructions in response to user interface operations.

[0050] It should be noted that the user interaction module 10 may further include a user interface 102. The user interface 102 is used to display audio and video source switching options and, in response to a switching operation performed by the user on the user interface (hereinafter referred to as an interface operation for distinction), generates a preset audio and video source switching instruction corresponding to that interface operation. It is understood that this embodiment does not limit the number of audio and video source switching options displayed on the user interface 102; it can be one or more. That is, when the number of switching options is one, the audio and video source switching instruction triggered each time the user clicks a switching option is different within a limited number of clicks. When the number of switching options is multiple, each switching option can be set to correspond to a different audio and video source switching instruction, that is, the instruction corresponding to each switching option specifies a different connected link.

[0051] In this embodiment, the audio / video source switcher further includes a system-on-a-chip 30. The user interaction module 10 is connected to the signal switching module 20 through the system-on-a-chip 30. The system-on-a-chip 30 is used to forward the audio / video source switching command to the signal switching module 20.

[0052] It should be noted that the system-on-chip 30 is a high-performance SoC (System on Chip) processor. The user interaction module 10 is connected to the signal switching module 20 through the system-on-chip 30; that is, the system-on-chip 30 is connected to both the user interaction module 10 and the signal switching module 20. After the user interaction module 10 generates an audio / video source switching command in response to a user operation, it sends the audio / video source switching command to the system-on-chip 30. The system-on-chip 30 then forwards the received audio / video source switching command to the signal switching module 20, so that the signal switching module 20 can perform audio / video source switching based on the received command.

[0053] In this embodiment, the audio / video source switcher further includes an input interface module 40 and an output interface module 50;

[0054] The input interface module 40 is connected to the audio and video acquisition device and is used to acquire the audio and video source data acquired by the audio and video acquisition device.

[0055] The output interface module 50 is connected to the audio and video playback device and is used to output the target audio and video data to be played to the audio and video playback device.

[0056] It should be noted that the audio / video source switcher of this application also includes an input interface module 40 and an output interface module 50. The input interface module 40 is connected to an audio / video acquisition device and is used to acquire audio / video source data acquired by the acquisition device. The audio / video acquisition device includes an audio acquisition device (e.g., a microphone) and a video acquisition device (e.g., a camera). The data acquired by the audio acquisition device is audio data, i.e., sound signals. The data acquired by the video acquisition device is video data. The output interface module 50 is connected to an audio / video playback device and is used to output the audio / video data to be played (hereinafter referred to as target audio / video data for distinction) to the audio / video playback device. The audio / video playback device includes an audio playback device (e.g., a speaker) and a video playback device (e.g., a monitor). The audio playback device is used to play the audio data to be played, and the video playback device is used to play the video data to be played.

[0057] In this embodiment, the input interface module 40 includes multiple input interfaces 401, the output interface module 50 includes multiple output interfaces 501, the target input interface is the input interface specified by the audio / video source switching instruction among the multiple input interfaces, and the target output interface is the output interface specified by the audio / video source switching instruction among the multiple output interfaces.

[0058] It should be noted that the input interface module 40 in this application includes multiple input interfaces 401, and the output interface module 50 includes multiple output interfaces 501. Furthermore, it can be understood that the target input interface is the input interface specified by the audio / video source switching instruction among the multiple input interfaces, and the target output interface is the output interface specified by the audio / video source switching instruction among the multiple output interfaces.

[0059] In this embodiment, the audio / video source switcher further includes a USB port expansion module 60, the input interface 401 is a USB input interface, and the audio / video acquisition device includes a first device;

[0060] The USB input interface is connected to the first device and the USB port expansion module 60 respectively, and is used to transmit the first audio and video source data obtained from the first device to the USB port expansion module 60.

[0061] It should be noted that the audio / video source switcher of this application also includes a USB (Universal Serial Bus) port expansion module 60. The USB port expansion module 60 can be a USB HUB (i.e., a USB extender) used to map multiple USB devices to the same port. The input interface 401 in the input interface module 40 can be a USB input interface, i.e., a USB-DEV interface, used to connect USB slave devices. The audio / video acquisition device includes a first device, which can be an audio acquisition device or a video acquisition device. The USB input interface is connected to both the first device and the USB port expansion module 60, and is used to transmit the audio / video source data (hereinafter referred to as the first audio / video source data) obtained from the first device to the USB port expansion module 60.

[0062] In this embodiment, the audio / video source switcher further includes an HDMI conversion chip 70, the input interface 401 is an HDMI input interface, and the audio / video acquisition device further includes a second device;

[0063] The HDMI input interface is connected to the second device and the HDMI conversion chip 70 respectively, and is used to transmit the second audio and video source data obtained from the second device to the HDMI conversion chip 70.

[0064] It should be noted that the audio / video source switcher of this application also includes an HDMI (High Definition Multimedia Interface) conversion chip 70. The input interface 401 in the input interface module 40 can be an HDMI input interface, i.e., an HDMI-IN interface. The audio / video acquisition device also includes a second device, which can be an audio acquisition device or a video acquisition device. The HDMI input interface is connected to both the second device and the HDMI conversion chip 70, and is used to transmit the audio / video source data (hereinafter referred to as second audio / video source data for distinction) obtained from the second device to the HDMI conversion chip 70.

[0065] In this embodiment, the system-on-a-chip 30 is communicatively connected to the USB port expansion module 60 and the HDMI conversion chip 70, respectively, the output interface 501 is a USB output interface, and the target audio and video data includes first audio and video data;

[0066] The USB port expansion module 60 is used to send the first audio and video source data to the system-on-a-chip 30;

[0067] The system-on-a-chip 30 is used to encode and decode the first audio and video source data to obtain the first audio and video data to be played, and output the first audio and video data to the USB output interface.

[0068] It should be noted that the system-on-a-chip 30 is communicatively connected to the USB port expansion module 60 and the HDMI conversion chip 70, respectively. The output interface 501 in the output interface module 50 is a USB output interface. The target audio and video data to be played includes first audio and video data. The USB port expansion module is used to send the first audio and video source data to the system-on-a-chip 30, which then performs encoding and decoding processing on the received first audio and video source data to obtain the first audio and video data to be played, and outputs the first audio and video data to the USB output interface for use by audio and video playback devices connected to the USB output interface.

[0069] In this embodiment, the output interface 501 is an HDMI output interface, and the target audio and video data further includes second audio and video data;

[0070] The HDMI conversion chip 70 is also used to send the second audio and video source data to the system-on-a-chip 30;

[0071] The system-on-a-chip 30 is used to encode and decode the second audio and video source data to obtain the second audio and video data to be played, and output the second audio and video data to the HDMI output interface.

[0072] It should be noted that the output interface 501 in the output interface module 50 can also be an HDMI output interface. The target audio and video data to be played also includes second audio and video data. The HDMI conversion chip 70 is used to send the second audio and video source data to the system-on-a-chip 30, and then the system-on-a-chip 30 performs encoding and decoding processing on the received second audio and video source data to obtain the second audio and video data to be played, and outputs the second audio and video data to the HDMI output interface for the audio and video playback device connected to the HDMI output interface to output the second audio and video data. It should be understood that the first audio and video data refers to the target audio and video data played in the audio and video playback device connected to the HDMI output interface, and the second audio and video data refers to the target audio and video data played in the audio and video playback device connected to the USB output interface.

[0073] Thus, this embodiment of the application improves the quality and security of audio-visual switching by encoding and decoding the collected audio and video source data to obtain the audio and video data to be played, and then outputting the audio and video data through the audio and video playback device.

[0074] For example, such as Figure 2The diagram shows the architecture of the audio / video source switcher. The input interface module 40 includes three USB input ports 401: USB-DEV1, USB-DEV2, and USB-DEV3. The input interface module 40 also includes three HDMI input ports 402: HDMI-IN1, HDMI-IN2, and HDMI-IN3. The output interface module 50 includes two USB output ports 501: USB-HOST1 and USB-HOST2. The output interface module 50 also includes two HDMI output ports 502: HDMI-OUT1 and HDMI-OUT2. The system includes the following components: HDMI-IN1 connects to the HDMI output of the nearby laptop to receive the video feed; USB-HOST1 connects to the USB host; USB-DEV1 connects to the USB microphone to acquire audio data; HDMI-IN2 and HDMI-IN3 connect to the HDMI output interface 2 and HDMI-IN3 of the camera or terminal device to acquire video data of the current meeting scene; HDMI-OUT1 and HDMI-OUT2 connect to the monitor input interface 2 to output video data to be played to the monitor; USB-DEV2 connects to the USB camera to acquire video data; USB-DEV3 connects to a USB peripheral device (e.g., a mouse) to receive user commands; and USB-HOST2 connects to the microcomputer to output audio and video data to be played to the microcomputer. After connecting all the devices, the user can switch between audio and video sources using the touch button 101 or the user interface 102 to establish different communication links, i.e., select different audio and video source paths. For example, multiple working modes can be set, each corresponding to a different audio and video source path.

[0075] Specifically, you can set:

[0076] The path corresponding to Mode 1 is: HDMI-IN1→HDMIOUT1, USB-DEV2 / USB-DEV3→USB-HOST1;

[0077] The path corresponding to Mode 2 is USB-DEV1 / USB-DEV2 / USB-DEV3→USB-HOST2, HDMI-IN2→HDMIOUT1, HDMI-IN3→HDMIOUT2;

[0078] The path corresponding to Mode 3 is: USB-DEV1 / USB-DEV2 / USB-DEV3→USB-HOST1, USB-DEV1 / USB-DEV2 / USB-DEV3→USB-HOST2.

[0079] It is understood that the embodiments of this application do not limit the paths that users can switch through the user interaction module 10, and users can pre-set the available paths according to actual needs.

[0080] Thus, the audio / video source switcher in this application includes a user interaction module 10, a signal switching module 20, a system-on-a-chip (SoC) 30, an input interface module 40, an output interface module 50, a USB expansion module 60, an HDMI conversion chip 70, and a power module. The input interface module 40 is used to connect multiple audio / video source devices (i.e., the aforementioned audio / video acquisition devices). The signal switching module 20 is responsible for switching multiple signal paths. The USB port expansion module 60 is used to expand the number of USB interfaces. The SoC 30 is used to encode and decode various audio / video signals. The output interface module 50 is used to connect to a display device (i.e., the aforementioned audio / video playback device). The power module is used to supply power. The audio / video source switcher in this application also requires supporting software for control and management. The software has remote control and monitoring functions, facilitating remote operation and management by meeting organizers. After the hardware and software design is completed, the audio / video source switching system is tested, including performance tests in multiple aspects such as switching speed, stability, and clarity, as well as user interface usability tests. The tests ensure that the audio / video source switcher in this application meets the design requirements and provides a good user experience. Thus, this application provides a hardware device based on a high-performance SoC processor and integrating a proprietary communication protocol, designed for seamless switching between multiple audio and video sources in various application scenarios such as multi-person video conferencing, online training, and live video streaming. It can not only improve the flexibility and efficiency of audio and video communication, but also ensure the security of data transmission through the proprietary protocol.

[0081] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An audio / video source switcher, characterized in that, The audio / video source switcher includes: a user interaction module and a signal switching module, wherein the user interaction module is connected to the signal switching module; The user interaction module is used to respond to the switching operation performed by the user and generate audio and video source switching instructions; The signal switching module is used to control the currently active link to disconnect and control the target link to be active based on the audio and video source switching command, so as to perform audio and video source switching. The currently connected link is the link through which audio and video data is transmitted after the last audio and video source switching operation, and the target link is the link specified by the audio and video source switching command that connects the target input interface and the target output interface in the audio and video source switcher.

2. The audio / video source switcher as described in claim 1, characterized in that, The user interaction module includes touch buttons, which are used to respond to touch operations performed by the user and generate audio / video source switching commands.

3. The audio / video source switcher as described in claim 1, characterized in that, The user interaction module also includes a user interface, which displays audio and video source switching options and generates audio and video source switching commands in response to user interface operations.

4. The audio / video source switcher as described in claim 1, characterized in that, The audio / video source switcher also includes a system-on-a-chip (SoC). The user interaction module is connected to the signal switching module through the SoC. The SoC is used to forward the audio / video source switching command to the signal switching module.

5. The audio / video source switcher as described in claim 4, characterized in that, The audio / video source switcher also includes an input interface module and an output interface module; The input interface module is connected to the audio and video acquisition device and is used to acquire the audio and video source data acquired by the audio and video acquisition device. The output interface module is connected to the audio and video playback device and is used to output the target audio and video data to be played to the audio and video playback device.

6. The audio / video source switcher as described in claim 5, characterized in that, The input interface module includes multiple input interfaces, the output interface module includes multiple output interfaces, the target input interface is the input interface specified by the audio / video source switching instruction among the multiple input interfaces, and the target output interface is the output interface specified by the audio / video source switching instruction among the multiple output interfaces.

7. The audio / video source switcher as described in claim 5, characterized in that, The audio / video source switcher also includes a USB port expansion module, the input interface is a USB input interface, and the audio / video acquisition device includes a first device; The USB input interface is connected to the first device and the USB port expansion module respectively, and is used to transmit the first audio and video source data obtained from the first device to the USB port expansion module.

8. The audio / video source switcher as described in claim 7, characterized in that, The audio / video source switcher also includes an HDMI conversion chip, the input interface is an HDMI input interface, and the audio / video acquisition device also includes a second device; The HDMI input interface is connected to the second device and the HDMI conversion chip respectively, and is used to transmit the second audio and video source data obtained from the second device to the HDMI conversion chip.

9. The audio / video source switcher as described in claim 8, characterized in that, The system-on-a-chip is communicatively connected to the USB port expansion module and the HDMI conversion chip, the output interface is a USB output interface, and the target audio and video data includes first audio and video data. The USB port expansion module is used to send the first audio and video source data to the system-on-a-chip; The system-on-a-chip is used to encode and decode the first audio and video source data to obtain the first audio and video data to be played, and output the first audio and video data to the USB output interface.

10. The audio / video source switcher as described in claim 8, characterized in that, The output interface is an HDMI output interface, and the target audio and video data also includes second audio and video data. The HDMI conversion chip is also used to send the second audio and video source data to the system-on-a-chip; The system-on-a-chip is used to encode and decode the second audio and video source data to obtain the second audio and video data to be played, and output the second audio and video data to the HDMI output interface.

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