Video distribution apparatus and method of operation thereof

Abstract

A video distribution apparatus and an operating method thereof are provided. The video distribution apparatus includes a plurality of video ports, a matrix switching circuit, and a controller. The matrix switching circuit is coupled to the video ports. The controller is coupled to the matrix switching circuit. When a first video port of the video ports receives a push-pull instruction, the controller controls the matrix switching circuit to mirror a video stream of the first video port to a second video port of the video ports according to the push-pull instruction.

Description

Technical Field

[0001] This invention relates to an electronic device, and more particularly to a video distribution device and its operating method. Background Technology

[0002] A matrix video distribution unit can selectively switch multiple video streams from different video sources (video devices) to multiple video destinations (other video devices). In a conference scenario, for example, video streams from multiple participants' computers can be selectively transmitted to one or more display walls via a matrix video distribution unit. To ensure that a video stream from a particular source is correctly transmitted to its corresponding video destination, the user must know which video port each of these video devices is connected to on the matrix video distribution unit, and then manually operate / control the switching of the matrix video distribution unit according to the video port number. Summary of the Invention

[0003] In view of this, the present invention proposes a video distribution device and its operation method to mirror the video stream of one video port that has received a push broadcast command to another video port.

[0004] In one embodiment of the present invention, the video distribution device includes a plurality of video ports, a matrix switching circuit, and a controller. The matrix switching circuit is coupled to the video ports. The controller is coupled to the matrix switching circuit. When a first video port among these video ports receives a push command, the controller controls the matrix switching circuit to mirror the video stream of the first video port to a second video port among these video ports according to the push command.

[0005] In one embodiment of the present invention, the above-described operation method includes: coupling an instruction triggering device to a first video port of a video distribution device; and issuing a push command to the first video port through the instruction triggering device, and mirroring the video stream of the first video port to a second video port of the video distribution device according to the push command.

[0006] Based on the above, the video distribution device described in the embodiments of the present invention can receive push commands issued by video devices through video ports. The controller of the video distribution device can know which video port the push command comes from. The controller can control the matrix switching circuit to mirror the video stream of one video port that received the push command to another video port. Therefore, the user does not need to know which video port of the video distribution device their operating device is connected to to mirror their video stream to another video device. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of a circuit block of a video distribution device according to an embodiment of the present invention;

[0008] Figure 2 This is a flowchart illustrating the operation method of a video distribution device according to an embodiment of the present invention;

[0009] Figure 3 This is a schematic diagram illustrating an operational scenario in which a video distribution device pushes a video stream from a video source device to a video acquisition device, according to an embodiment of the present invention.

[0010] Figure 4 This is a schematic diagram illustrating an operational scenario in which a video distribution device mirrors the video stream of one video capture device to another video capture device, according to another embodiment of the present invention.

[0011] Figure 5 This is a schematic diagram illustrating, according to an embodiment of the present invention, that a video device is electrically connected to the video port of a video distribution device via a video cable.

[0012] Figure 6 This is a waveform diagram of a push command according to an embodiment of the present invention;

[0013] Figure 7 This is a waveform diagram of a push command according to another embodiment of the present invention;

[0014] Figure 8 This is a schematic diagram illustrating, according to another embodiment of the present invention, that a video device is electrically connected to the video port of a video distribution device via a video cable;

[0015] Figure 9 This is a flowchart illustrating the operation method of a video distribution device according to another embodiment of the present invention;

[0016] Figure 10 This is a flowchart illustrating the operation method of a video distribution device according to another embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures

[0018] 11_1, 11_m, 12_1, 12_n: Video devices

[0019] 100: Video distribution device

[0020] 101_1, 101_m, 102_1, 102_n: Video ports

[0021] 110: Matrix switching circuit

[0022] 120: Controller

[0023] 130, 140: Video cable

[0024] 141: Command trigger device

[0025] CMD1_1, CMD1_m, CMD2_1, CMD2_n: Push commands

[0026] S210~S230, S910~S950, S1010~S1050: Steps Detailed Implementation

[0027] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same component reference numerals are used in the drawings and description to denote the same or similar parts.

[0028] The present invention is illustrated below with several embodiments; however, the invention is not limited to the embodiments shown. Suitable combinations between embodiments are also permitted. The term "coupled (or connected)" as used throughout the entire specification (including the claims) may refer to any direct or indirect connection means. For example, if a first device is described as coupled (or connected) to a second device, it should be interpreted as the first device being directly connected to the second device, or the first device being indirectly connected to the second device through other devices or some connection means. The terms "first," "second," etc., used throughout the entire specification (including the claims) are used to name components or distinguish different embodiments or scopes, and are not intended to limit the upper or lower limit of the number of components, nor to limit the order of components. Furthermore, wherever possible, components / components / steps using the same reference numerals in the drawings and embodiments represent the same or similar parts. Components / components / steps using the same reference numerals or the same terms in different embodiments may be referred to mutually in the relevant descriptions.

[0029] Figure 1 This is a circuit block diagram of a video distribution device 100 according to an embodiment of the present invention. The video distribution device 100 includes a plurality of video ports. For example, in Figure 1In the illustrated embodiment, the video distribution device 100 may include video ports 101_1, ..., 101_m and video ports 102_1, ..., 102_n. According to actual design, any one of these video ports 101_1 to 101_m and 102_1 to 102_n may be a high definition multimedia interface (HDMI) connector, a DisplayPort (DP) connector, a Universal Serial Bus (USB) connector, and / or other video connectors. According to actual design, in some embodiments, these video ports 101_1 to 101_m may be defined as input ports, and these video ports 102_1 to 102_n may be defined as output ports. The number m of video ports 101_1 to 101_m and the number n of video ports 102_1 to 102_n can be any integer set according to actual design. In other embodiments, video ports 101_1 to 101_m can be defined as output ports, and video ports 102_1 to 102_n can be defined as input ports. In still other embodiments, some (or all) of video ports 101_1 to 101_m and video ports 102_1 to 102_n can be defined as bidirectional ports.

[0030] The video ports 101_1 to 101_m and the video ports 102_1 to 102_n of the video distribution device 100 are adapted to couple multiple video devices. For example, video port 101_1 can be coupled to video device 11_1, video port 101_m can be coupled to video device 11_m, video port 102_1 can be coupled to video device 12_1, and video port 102_n can be coupled to video device 12_n. In some embodiments, the video devices 11_1 to 11_m can be video source devices, and the video devices 12_1 to 12_n can be video sink devices. Depending on the actual design, the video source devices may include cameras, video players, computers, and / or other video sources, while the video sink devices may include televisions, monitors, display walls, monitors, computers, and / or other video sink devices. In other embodiments, the video devices 11_1 to 11_m may be video capturing devices, and the video devices 12_1 to 12_n may be video source devices. In other embodiments, some (or all) of the video devices 11_1 to 11_m and the video devices 12_1 to 12_n may be capable of bidirectional transmission and reception of video streams.

[0031] exist Figure 1In the illustrated embodiment, the video distribution device 100 further includes a matrix switching circuit 110 and a controller 120. Depending on different design requirements, the matrix switching circuit 110 and / or the controller 120 can be implemented in hardware, firmware, software (i.e., a program), or a combination of these three. In hardware form, the matrix switching circuit 110 and / or the controller 120 can be implemented as logic circuits on an integrated circuit. The related functions of the matrix switching circuit 110 and / or the controller 120 can be implemented as hardware using hardware description languages ​​(such as Verilog HDL or VHDL) or other suitable programming languages. For example, the related functions of the matrix switching circuit 110 and / or the controller 120 can be implemented in various logic blocks, modules and circuits in one or more controllers, microcontrollers, microprocessors, application-specific integrated circuits (ASICs), digital signal processors (DSPs), field programmable gate arrays (FPGAs) and / or other processing units.

[0032] In software and / or firmware form, the related functions of the matrix switching circuit 110 and / or controller 120 can be implemented as programming codes. For example, the matrix switching circuit 110 and / or controller 120 can be implemented using common programming languages ​​(such as C, C++, or assembly language) or other suitable programming languages. The programming code can be recorded / stored in non-transitory computer-readable medium. In some embodiments, the non-transitory computer-readable medium includes, for example, read-only memory (ROM), tape, disk, card, semiconductor memory, programmable logic circuits, and / or storage devices. The storage devices include hard disk drives (HDDs), solid-state drives (SSDs), or other storage devices. A computer, central processing unit (CPU), controller, microcontroller, or microprocessor can read and execute the programming code from the non-transitory computer-readable medium to implement the related functions of the matrix switching circuit 110 and / or the controller 120.

[0033] Controller 120 is coupled to matrix switching circuit 110. Matrix switching circuit 110 is coupled to video ports 101_1 to 101_m and video ports 102_1 to 102_n. Based on the control of controller 120, matrix switching circuit 110 can selectively provide at least one video data path between video ports 101_1 to 101_m and video ports 102_1 to 102_n.

[0034] Figure 2 This is a schematic flowchart illustrating the operation method of a video distribution device according to an embodiment of the present invention. Please refer to... Figure 1 and Figure 2In step S210, the command triggering device is coupled to the video port of the video distribution device 100. In practice, the command triggering device can be a separate human-machine interface (e.g., a button), integrated with a video device (e.g., a touchscreen), or a specific command issued via a keyboard and mouse. Therefore, any device capable of issuing push commands to the video port is within the scope of this invention. For example, video device 11_1 (the command triggering device) can be coupled to video port 101_1, and video device 12_1 (another command triggering device) can be coupled to video port 102_1. It is assumed (but not limited to) that these video ports 101_1 to 101_m can be defined as input ports, and these video ports 102_1 to 102_n can be defined as output ports. Video devices 11_1 to 11_m can output video streams to video ports 101_1 to 101_m, and video devices 12_1 to 12_n can receive video streams output from video ports 102_1 to 102_n.

[0035] In step S220, the instruction triggering device, such as one or more (or all) of video devices 11_1 to 11_m and 12_1 to 12_n, can issue a push command to the video port of the video distribution device 100. For example, based on a user's triggering operation on video device 11_1, video device 11_1 can issue a push command CMD1_1 to video port 101_1 of the video distribution device 100. Similarly, video device 11_m may issue a push command CMD1_m to video port 101_m of the video distribution device 100, video device 12_1 may issue a push command CMD2_1 to video port 102_1 of the video distribution device 100, and video device 12_n may issue a push command CMD2_n to video port 102_n of the video distribution device 100. In particular, the user does not need to know which video port of the video distribution device the video device is connected to in order to issue a push command to the video distribution device.

[0036] The controller 120 can control the matrix switching circuit 110 to selectively provide video data paths between video ports 101_1 to 101_m and 102_1 to 102_n. Furthermore, the controller 120 can check whether any video device has issued a push command. When one of these video ports 101_1 to 101_m and 102_1 to 102_n (the first video port) receives a push command, the controller 120 can perform step S230 to control the matrix switching circuit 110 to mirror the video stream from the first video port to another video port (the second video port) among these video ports 101_1 to 101_m and 102_1 to 102_n of the video distribution device 100.

[0037] Figure 3 This is a schematic diagram illustrating an operational scenario in which the video distribution device 100 pushes the video stream from the video source device to the video acquisition device, according to an embodiment of the present invention. Figure 3 In the operational scenario shown, video device 11_1 is assumed to be a computer, and video device 12_1 is assumed to be a monitor wall. Please refer to... Figure 1 and Figure 3Video device 11_1 can be coupled to video port 101_1 (video input port) of video distribution device 100, and video device 12_1 can be coupled to video port 102_1 (video output port) of video distribution device 100. Video device 11_1 can output push command CMD1_1 and video stream to video port 101_1 of video distribution device 100. Controller 120 of video distribution device 100 can know that push command CMD1_1 comes from video port 101_1 (first video port). Controller 120 can also select a video port (second video port) from these video ports 102_1 to 102_n according to push command CMD1_1. For example, in some embodiments, when video device 11_1 sends a push command CMD1_1 to video port 101_1, controller 120 can control matrix switching circuit 110 to mirror (push) the video stream to video port 102_1 (the second video port) according to the default settings corresponding to push command CMD1_1. In other embodiments, when video device 11_1 sends a push command CMD1_1 to video port 101_1, controller 120 can parse and control matrix switching circuit 110 to mirror the video stream to video port 102_1 (the second video port) according to the protocol waveform of push command CMD1_1. Controller 120 can control matrix switching circuit 110 to mirror (push) the video stream from video port 101_1 to video device 12_1 coupled to video port 102_1. Therefore, video distribution device 100 can mirror (push) the video stream from video device 11_1 to video device 12_1.

[0038] Figure 4 This is a schematic diagram illustrating an operational scenario where the video distribution device 100 mirrors the video stream of one video capturing device to another video capturing device, according to another embodiment of the present invention. Figure 4 In the operational scenario shown, video device 11_1 is assumed to be a camera, video device 12_1 is assumed to be a monitor, and video device 12_n is assumed to be a display wall. Please refer to... Figure 1 and Figure 4 Video device 11_1 can be coupled to video port 101_1 (video input port) of video distribution device 100, and video device 12_1 can be coupled to video port 102_1 (video output port) of video distribution device 100, and video device 12_n can be coupled to video port 102_n (video output port) of video distribution device 100. The matrix switching circuit 110 of video distribution device 100 can output (push) the video stream output by video device 11_1 to video device 12_1 through video port 102_1 (first video port).

[0039] Video device 12_1 can output push command CMD2_1 to video port 102_1 of video distribution device 100. The controller 120 of video distribution device 100 can know that push command CMD2_1 comes from video port 102_1 (first video port). The controller 120 can also select a video port (second video port) from these video ports 102_1 to 102_n based on push command CMD2_1. For example, in some embodiments, when video device 12_1 sends push command CMD2_1 to video port 102_1, controller 120 can select video port 102_n (second video port) from these video ports 102_1 to 102_n based on the default settings corresponding to push command CMD2_1. In other embodiments, when video device 12_1 sends a push command CMD2_1 to video port 102_1, controller 120 can parse the protocol waveform of push command CMD2_1, and controller 120 can select video port 102_n (the second video port) from these video ports 102_1 to 102_n based on this protocol waveform. Controller 120 can control matrix switching circuit 110 to mirror the video stream from video port 102_1 (i.e., the video stream output by video device 11_1) to video device 12_n coupled to video port 102_n according to the push command CMD2_1 from video device 12_1. Therefore, video distribution device 100 can mirror (push) the video stream from video device 11_1 to video devices 12_1 and 12_n.

[0040] In summary, the video distribution device 100 of the embodiments of the present invention can receive push commands CMD1_1~CMD1_m and CMD2_1~CMD2_n issued by video devices 11_1~11_m and 12_1~12_n through video ports 101_1~101_m and 102_1~102_n. The controller 120 of the video distribution device 100 can know which video port the push command comes from. For example, the controller 120 can know that the push command CMD2_1 comes from video port 102_1. Based on the push command CMD2_1, the controller 120 can control the matrix switching circuit 110 to mirror the video stream of video port 102_1 that received the push command CMD2_1 to another video port. Therefore, the user does not need to know which video port of the video distribution device 100 the video device 12_1 he / she is connected to to mirror the video stream of video device 12_1 to another video device.

[0041] Figure 5This is a schematic diagram showing, according to an embodiment of the present invention, a video device 12_1 electrically connected to a video port 102_1 of a video distribution device 100 via a video cable 130. Figure 1 Other video devices and other video ports shown can be referenced. Figure 5 The descriptions of the video device 12_1 and video port 102_1 shown are analogous and will not be repeated here. Please refer to... Figure 1 , Figure 4 and Figure 5 The first end of video cable 130 is coupled to video port 102_1 (first video port), and the second end of video cable 130 is coupled to video device 12_1 (first video device, command triggering device). Video device 12_1 outputs push command CMD2_1 to video port 102_1 through video cable 130. According to the actual design, push command CMD2_1 may include a bi-state signal, an encoded waveform signal, or other signals.

[0042] According to the actual design, video cable 130 may include HDMI cable, DP cable, USB cable, and / or other video cables. For example, assuming video cable 130 is an HDMI cable, video device 12_1 can output push command CMD2_1 to video port 102_1 through pin 14 (NC pin) of the HDMI connector of video cable 130. Assuming video cable 130 is a DP cable, video device 12_1 can output push command CMD2_1 to video port 102_1 through the HPD pin of the DP connector of video cable 130. According to the DisplayPort specification, the pulse width of the HPD pin is greater than or equal to 100ms. When the pulse width of the protocol waveform of push command CMD2_1 is less than 100ms, for example, the pulse width of the protocol waveform of push command CMD2_1 is less than or equal to 50ms, the transmission of push command CMD2_1 will not affect the function of the HPD pin.

[0043] Figure 6 This is a waveform diagram of the push command CMD2_1, shown according to an embodiment of the present invention. Figure 6 In the illustrated embodiment, the push command CMD2_1 can be a bistate signal. Please refer to... Figure 1 , Figure 4 , Figure 5 and Figure 6When the push command CMD2_1 is held at a high logic level, it indicates that the push command CMD2_1 is in an "untriggered state". When the push command CMD2_1 is pulled down to a low logic level, it indicates that the push command CMD2_1 is in a "triggered state". The controller 120 of the video distribution device 100 can analyze / check the push command CMD2_1. Once the push command CMD2_1 transitions to the "triggered state", the controller 120 can select video port 102_n as the second video port from these video ports 102_1 to 102_n according to the default settings corresponding to the push command CMD2_1. The controller 120 can control the matrix switching circuit 110 to mirror the video stream of video port 102_1 (i.e., the video stream output by video device 11_1) to the video device 12_n coupled to video port 102_n according to the push command CMD2_1 of video device 12_1.

[0044] Figure 7 This is a waveform diagram of the push command CMD2_1, shown according to another embodiment of the present invention. Figure 7 In the illustrated embodiment, the push command CMD2_1 can be an encoded waveform signal. Please refer to... Figure 1 , Figure 4 , Figure 5 and Figure 7 When the push command CMD2_1 remains at a high logic level, it indicates that the push command CMD2_1 is in a "non-triggered state". Once the protocol waveform of the push command CMD2_1 is generated, the controller 120 of the video distribution device 100 can parse / check the protocol waveform of the push command CMD2_1. The controller 120 can select a corresponding video port (e.g., video port 102_n) from these video ports 102_1 to 102_n as the second video port based on the parsing result of the protocol waveform of the push command CMD2_1. The controller 120 can control the matrix switching circuit 110 to mirror the video stream of video port 102_1 (i.e., the video stream output by video device 11_1) to the video device 12_n coupled to video port 102_n according to the push command CMD2_1 of video device 12_1.

[0045] Figure 8 This is a schematic diagram showing, according to another embodiment of the present invention, a video device 12_1 electrically connected to the video port 102_1 of a video distribution device 100 via a video cable 140. Figure 1 Other video devices and other video ports shown can be referenced. Figure 8 The descriptions of the video device 12_1 and video port 102_1 shown are analogous and will not be repeated here. Please refer to... Figure 1 , Figure 4 and Figure 8A first end of the video cable 140 is coupled to video port 102_1 (first video port), and a second end of the video cable 140 is coupled to video device 12_1 (first video device). Depending on the design, the video cable 140 may include an HDMI cable, a DP cable, a USB cable, and / or other video cables. A command trigger device 141 is coupled to the second end of the video cable 140. The command trigger device 141 can provide a human-machine interface to the user. The command trigger device 141 can correspondingly issue a push command CMD2_1 to video port 102_1 based on the user's operation of the human-machine interface.

[0046] In some implementations, the instruction triggering device 141 may include a push-button switch (not shown). Please refer to... Figure 6 and Figure 8 When the button switch of the command trigger device 141 is not pressed, the level of the push command CMD2_1 remains at a high logic level (indicating that the push command CMD2_1 is in an "untriggered state"). When the button switch of the command trigger device 141 is pressed, the command trigger device 141 pulls the level of the push command CMD2_1 down to a low logic level (indicating that the push command CMD2_1 is in a "triggered state"). Assuming that the video cable 140 is an HDMI cable, when the button switch of the command trigger device 141 is pressed, the command trigger device 141 can pull down the level of pin 14 (NC pin) of the HDMI connector of the video cable 140 to a low logic level.

[0047] In other embodiments, the instruction triggering device 141 may include a push-button switch (not shown) and an encoding circuit (not shown). Please refer to... Figure 7 and Figure 8 When the push button of command trigger device 141 is not pressed, the push command CMD2_1 remains at a high logic level. When the push button of command trigger device 141 is pressed, the encoding circuit of command trigger device 141 can generate a protocol waveform and output the protocol waveform to video port 102_1. Assuming that video cable 140 is an HDMI cable, when the push button of command trigger device 141 is pressed, the encoding circuit of command trigger device 141 can output the protocol waveform to video port 102_1 through pin 14 (NC pin) of the HDMI connector of video cable 140.

[0048] Figure 9 This is a flowchart illustrating the operation method of a video distribution device according to another embodiment of the present invention. Please refer to... Figure 1 , Figure 8 and Figure 9In step S910, the controller 120 can detect / check whether any instruction triggering device issues a push-play command. When the instruction triggering device of the video cable coupled to one of the video ports 101_1~101_m and 102_1~102_n issues a push-play command (the judgment result of step S920 is "yes"), the controller 120 can determine which of these video ports 101_1~101_m and 102_1~102_n the video port (first video port) receiving the push-play command is (step S930). In step S940, the controller 120 can parse the push-play command to determine a video port (second video port) from these video ports 102_1~102_n. In step S950, the controller 120 can control the matrix switching circuit 110 according to this push-play command to mirror (output) the video stream of the first video port to the second video port (as in step S950). Figure 3 (The scenario shown).

[0049] Figure 10 This is a flowchart illustrating the operation method of a video distribution device according to another embodiment of the present invention. Please refer to... Figure 1 , Figure 8 and Figure 10 In step S1010, the controller 120 can detect / check whether any instruction triggering device issues a push-play command. When the instruction triggering device of the video cable coupled to one of the video ports 101_1~101_m and 102_1~102_n issues a push-play command (the judgment result of step S1020 is "yes"), the controller 120 can determine which of these video ports 101_1~101_m and 102_1~102_n the video port (first video port) receiving the push-play command is (step S1030). In step S1040, the controller 120 can parse the push-play command to determine a video port (second video port) from these video ports 102_1~102_n. In step S1050, the controller 120 can control the matrix switching circuit 110 according to this push-play command to mirror (copy) the video stream output from the first video port to a certain video device to the second video port (as in step S1050). Figure 4 (The scenario shown).

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A video distribution device, characterized in that, The video distribution device includes: Multiple video ports, wherein one of the multiple video ports is an input port, the input port being used to receive video streams; Matrix switching circuitry, coupled to the plurality of video ports; and The controller is coupled to the matrix switching circuit, wherein When the first video port among the plurality of video ports receives a push broadcast command, the controller controls the matrix switching circuit to mirror the video stream of the first video port to the second video port among the plurality of video ports according to the push broadcast command.

2. The video distribution device according to claim 1, characterized in that, Both the first video port and the second video port are video output ports.

3. The video distribution device according to claim 1, characterized in that, When the first video port receives the push command, the controller controls the matrix switching circuit to mirror the video stream to the second video port according to the default settings.

4. The video distribution device according to claim 1, characterized in that, When the first video port receives the push command, the controller parses the command and controls the matrix switching circuit to mirror the video stream to the second video port according to the protocol waveform of the push command.

5. The video distribution device according to claim 1, characterized in that, The video distribution device further includes: The video cable has a first end and a second end; and A command triggering device, wherein the first end of the video cable is coupled to the first video port, the second end of the video cable is coupled to the command triggering device, the command triggering device provides a human-machine interface, and the command triggering device issues the push command to the first video port based on the operation of the human-machine interface.

6. A method for operating a video distribution device, characterized in that, The operation method includes: The video stream is received through the input port and then switched through the first video port of the video distribution device via a matrix switching circuit. Couple the instruction triggering device to the first video port of the video distribution device; and The instruction triggering device sends a push command to the first video port, and the controller, based on the push command, mirrors the video stream from the first video port to the second video port of the video distribution device through the matrix switching circuit. The first video port and the second video port are coupled to the matrix switching circuit, and the controller is coupled to the matrix switching circuit.

7. The operating method according to claim 6, characterized in that, Both the first video port and the second video port are video output ports.

8. The operating method according to claim 6, characterized in that, The video distribution device further includes multiple video ports, and the operation method further includes: When the instruction triggering device sends the push instruction to the first video port, the second video port is selected from the plurality of video ports according to the default settings to mirror the video stream.

9. The operating method according to claim 6, characterized in that, The video distribution device further includes multiple video ports, and the operation method further includes: When the instruction triggering device sends the push command to the first video port, the protocol waveform of the push command is parsed; and The second video port is selected from the plurality of video ports based on the protocol waveform to mirror the video stream.

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