Conference machine, conference machine control method and office equipment

Abstract

The invention discloses a conference machine, a conference machine control method and office equipment, relates to the technical field of display, and can increase operation modes of the conference machine so as to expand application scenes of the conference machine. The conference machine comprises a display; a display driving board; the system board is provided with an output signal external port; the first multi-path signal selection board is provided with an input signal external port, and the first multi-path signal selection board is electrically connected with the input end of the system board and the input end of the display driving board; and the second multi-path signal selection board is electrically connected with the output ends of the system board, the display and the display driving board respectively.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a conference machine, a conference machine control method and an office equipment. BACKGROUND

[0002] At present, the conference machine can process audio and video and communicate to realize conference information interaction. The conference machine is widely used in office and conference occasions and is also suitable for communication and display requirements in leisure discussion areas. However, the existing conference machine has a single function and mainly provides a conference mode, which is difficult to be compatible with the operation mode of office requirements, so that the application scene of the conference machine is greatly limited. SUMMARY

[0003] Embodiments of the present application provide a conference machine, a conference machine control method and an office equipment, which can increase the operation mode of the conference machine to expand the application scene of the conference machine.

[0004] In a first aspect, the present application provides a conference machine, comprising:

[0005] a display;

[0006] a display driving board;

[0007] a system board provided with an output signal external port;

[0008] a first multi-channel signal selection board provided with an input signal external port, the first multi-channel signal selection board being electrically connected to the input end of the system board and the display driving board respectively;

[0009] a second multi-channel signal selection board being electrically connected to the output end of the system board, the display and the display driving board respectively.

[0010] In some embodiments, the system board comprises a mode switching module;

[0011] the mode switching module is configured to control the switching of the working mode of the conference machine, the working mode comprising a first working mode and a second working mode;

[0012] when the conference machine is in the first working mode, the multimedia signal transmission channel of the first multi-channel signal selection board and the display driving board is disconnected, the multimedia signal transmission channel of the first multi-channel signal selection board and the system board is connected, the multimedia signal transmission channel of the second multi-channel signal selection board and the display driving board is disconnected, and the multimedia signal transmission channel of the second multi-channel signal selection board and the system board is connected;

[0013] In the case that the conference machine is in the second working mode, the multimedia signal transmission channel between the first multi-channel signal selection board and the display driving board is turned on, the multimedia signal transmission channel between the first multi-channel signal selection board and the system board is turned off, the multimedia signal transmission channel between the second multi-channel signal selection board and the display driving board is turned on, and the multimedia signal transmission channel between the second multi-channel signal selection board and the system board is turned off.

[0014] In some embodiments, the input signal external port comprises an HDMI input port and a DP input port; and / or,

[0015] The output signal external port comprises an HDMI output port and a DP output port.

[0016] In some embodiments, the conference machine further comprises:

[0017] an HDMI signal conversion module configured to convert the signal received by the HDMI input port into a MIPI signal; and / or,

[0018] a DP signal conversion module configured to convert the signal received by the DP input port into a MIPI signal.

[0019] In some embodiments, the conference machine further comprises:

[0020] a first signal switching module disposed in at least one of the system board, the first multi-channel signal selection board and the display driving board, the first signal switching module being configured to switch the signal transmission between the HDMI input channel and the DP input channel based on a first input selection instruction in the case that both the HDMI input port and the DP input port are connected to an external signal source.

[0021] In some embodiments, the system board comprises a camera input channel and a second signal switching module;

[0022] the second signal switching module being configured to turn off the camera input channel in the second working mode;

[0023] the second signal switching module being configured to turn on the camera input channel in the first working mode; or,

[0024] the camera input channel comprising a plurality of camera input channels, the second signal switching module being configured to turn off one or more of the camera input channels based on a second input selection instruction and establish one or more multimedia signal transmission channels between the system board and the first multi-channel signal selection board in the first working mode.

[0025] In some embodiments, the system board comprises a power management module, a charging wire interface, a control circuit, a first data switching module, a second data switching module and a charging switching module, the charging wire interface is used for transmitting current and digital signals, the charging wire interface is electrically connected with the charging switching module, the control circuit, the first data switching module and the second data switching module respectively, the output signal external port is electrically connected with the first data switching module and the second data switching module respectively, and the power management module is electrically connected with the first data switching module;

[0026] The charging wire interface comprises a first communication protocol detection pin, a second communication protocol detection pin and a first plug detection pin, and the charging switching module is electrically connected with the first communication protocol detection pin, the second communication protocol detection pin, the first plug detection pin and the control circuit respectively;

[0027] The control circuit is used for sending a mode switching signal to the charging switching module, the mode switching signal comprises a normal mode signal and a common mode signal, and the mode switching signal is generated based on a charging mode switching instruction;

[0028] The charging switching module is in a normal charging mode when receiving the normal mode, in the normal charging mode, when the charging wire interface accesses an external device, a reverse charging channel of the charging wire interface is turned on, and the reverse charging channel of the charging wire interface comprises the charging wire interface, the first data switching module and the power management module connected;

[0029] The charging switching module is in a common charging mode when receiving the common mode, in the common charging mode, when the output signal external port accesses an external device, a transmission channel of the output signal external port is always turned on, and the transmission channel of the output signal external port comprises the output signal external port, the second data switching module and the control circuit connected.

[0030] In some embodiments, a fast charging protocol module is connected between the first data switching module and the second data switching module;

[0031] The charging switching module comprises an OR gate circuit, a controllable switch, a selection switch and a triode, an output end of the first plug detection pin is electrically connected with an input end of the controllable switch, and output ends of the controllable switch are electrically connected with the first data switching module and the second data switching module respectively;

[0032] The first communication protocol detection pin and the second communication protocol detection pin are connected to the input of the OR gate circuit respectively, and the output of the OR gate circuit is connected with the selection switch between the first data switching module;

[0033] The control circuit is used for sending the mode switching signal to the controllable switch and the selection switch, the first electrode of the triode is connected with the output of the controllable switch, the second electrode of the triode is grounded, and the third electrode of the triode is used for accessing the mode switching signal;

[0034] In the normal mode, the controllable switch is turned on, the selection switch is turned off, the triode is turned off, the controllable switch outputs the first detection signal, and in the case that the charging line interface accesses an external device, the reverse charging channel of the charging line interface is turned on;

[0035] In the shared mode, the controllable switch is turned off, the selection switch is turned on, the triode is turned on, the selection switch outputs the second detection signal, and in the case that the output signal external port accesses an external device, the transmission channel of the output signal external port is always turned on.

[0036] In a second aspect, the embodiment of the application provides a conference machine control method, applied to the conference machine as described in the first aspect, and the control method comprises the following steps:

[0037] The multimedia signal transmission states of the control system board and the first and second multi-channel signal selection boards are controlled respectively, and the multimedia signal transmission states of the display driving board and the first and second multi-channel signal selection boards are controlled respectively, so that the conference machine is controlled to switch between different working modes, wherein the multimedia signal transmission states include a multimedia signal transmission on state and a multimedia signal transmission off state.

[0038] In some embodiments, the system board comprises a mode switching module;

[0039] The conference machine is controlled to switch between different working modes, comprising:

[0040] A working mode switching instruction is acquired;

[0041] Based on the working mode switching instruction, the mode switching module is controlled to switch to a first state, so that the conference machine is controlled to switch to a first working mode; or

[0042] Based on the working mode switching instruction, the mode switching module is controlled to switch to a second state, so that the conference machine is controlled to switch to a second working mode;

[0043] In the first working mode, the controllable switch is turned on, the selection switch is turned off, the triode is turned off, the controllable switch outputs the first detection signal, and in the case that the charging line interface accesses an external device, the reverse charging channel of the charging line interface is turned on;

[0044] In the case that the conference machine switches to the first working mode, the system board sends a first control signal to the first multi-path signal selection board and a second control signal to the second multi-path signal selection board; the first control signal is used to control to disconnect the multimedia signal transmission channel between the first multi-path signal selection board and the display driving board, and to control to establish the multimedia signal transmission channel between the first multi-path signal selection board and the system board; the second control signal is used to control to disconnect the multimedia signal transmission channel between the second multi-path signal selection board and the display driving board, and to control to establish the multimedia signal transmission channel between the second multi-path signal selection board and the system board.

[0045] In the case that the conference machine switches to the second working mode, the system board sends a third control signal to the first multi-path signal selection board and a fourth control signal to the second multi-path signal selection board; the third control signal is used to control to disconnect the multimedia signal transmission channel between the first multi-path signal selection board and the system board, and to control to establish the multimedia signal transmission channel between the first multi-path signal selection board and the display driving board; the fourth control signal is used to control to disconnect the multimedia signal transmission channel between the second multi-path signal selection board and the system board, and to control to establish the multimedia signal transmission channel between the second multi-path signal selection board and the display driving board.

[0046] In some embodiments, the input signal external port includes an HDMI input port and a DP input port.

[0047] The method further includes:

[0048] detecting whether the input signal external port is connected to an external signal source;

[0049] in the case that it is detected that both the HDMI input port and the DP input port are connected to an external signal source, prompting a signal input selection information for a user to select an external signal source input;

[0050] obtaining a first input selection instruction of the user for the external signal source input;

[0051] based on the first input selection instruction, switching the signal transmission of the HDMI input channel and the DP input channel.

[0052] In some embodiments, the system board includes a camera channel.

[0053] The method further includes:

[0054] In a case where the conference machine switches to the second working mode, the camera input channel is controlled to be turned off.

[0055] In a case where the conference machine switches to the first working mode, the camera input channel is controlled to be turned on; or,

[0056] The camera input channel includes a plurality of camera input channels, and in a case where the conference machine is in the first working mode, one or more camera input channels are controlled to be turned off based on a second input selection instruction to establish one or more multimedia signal transmissions between the system board and the first multi-channel signal selection board.

[0057] In some embodiments, the system board includes a charging line interface, a control circuit, a first data switching module, a second data switching module, and a charging switching module, the charging line interface includes a first communication protocol detection pin, a second communication protocol detection pin, and a first plug detection pin;

[0058] The method further includes:

[0059] Respectively detecting signals of the first communication protocol detection pin, the second communication protocol detection pin, and the first plug detection pin;

[0060] and obtaining a charging mode switching instruction;

[0061] Based on the charging mode switching instruction, a mode switching signal is sent to the charging switching module, the mode switching signal including a normal mode signal or a shared mode signal;

[0062] Based on the signals of the first communication protocol detection pin, the second communication protocol detection pin, and the first plug detection pin, and the normal mode signal, a first detection signal is generated;

[0063] Based on the first detection signal, the reverse charging channel of the charging line interface is controlled to be turned on in a case where the charging line interface accesses an external device; or,

[0064] Based on the signals of the first communication protocol detection pin, the second communication protocol detection pin, and the first plug detection pin, and the shared mode signal, a second detection signal is generated;

[0065] Based on the second detection signal, the transmission channel of the output signal external port is controlled to be turned on in a case where the output signal external port accesses an external device.

[0066] A third aspect of the embodiments of the present application provides an office equipment, including:

[0067] The conference machine as claimed in the first aspect.

[0068] In some embodiments, the office equipment further includes:

[0069] a computer host, in communication connection with the first multi-channel signal selection board of the conference machine through an input signal external port; and / or,

[0070] a secondary screen display, in communication connection with the system board of the conference machine through an output signal external port.

[0071] The conference machine provided by the embodiments of the present application can realize the switching of the signal transmission state of the first multi-channel signal selection board and the second multi-channel signal selection board and the signal transmission state of the display driving board, so that the working mode of the conference machine is switchable. By increasing the first multi-channel signal selection board, the second multi-channel signal selection board and the display driving board, the number of multimedia signal transmission channels can be increased. Based on the combination of the disconnection and conduction of different multimedia signal transmission channels, different working modes of the conference machine can be obtained, and the working mode of the conference machine is increased, so that the conference machine is not limited to the conference mode, but can also be compatible with the office mode, so that the application scenarios of the conference machine can be compatible with multiple working modes such as conference and office, and the cost and space occupation of the office equipment for the existing conference machine to be compatible with the office can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0072] Figure 1 a schematic structural diagram of a conference machine provided by the embodiments of the present application;

[0073] Figure 2 a schematic structural diagram of another conference machine provided by the embodiments of the present application;

[0074] Figure 3 a schematic structural diagram of another conference machine provided by the embodiments of the present application;

[0075] Figure 4 a schematic structural diagram of a system board provided by the embodiments of the present application;

[0076] Figure 5 a schematic structural diagram of another system board provided by the embodiments of the present application;

[0077] Figure 6 a schematic structural diagram of a system board provided by the embodiments of the present application;

[0078] Figure 7 a schematic structural diagram of another system board provided by the embodiments of the present application;

[0079] Figure 8 a schematic structural diagram of an office equipment provided by the embodiments of the present application. DETAILED DESCRIPTION

[0080] To better understand the technical solutions provided in the embodiments of this specification, the technical solutions of the embodiments of this specification will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0081] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The term "two or more" includes two or more cases.

[0082] Currently, conference machines can process and communicate audio and video to enable information exchange during meetings. They are widely used in offices and meeting settings, and are also suitable for communication and presentation needs in casual discussion areas. However, existing conference machines have relatively limited functionality, primarily offering a meeting mode, which is difficult to adapt to office-related operating modes. Therefore, the application scenarios for conference machines are greatly limited.

[0083] In view of this, embodiments of this application provide a conference machine, a conference machine control method, and office equipment, which can increase the operating modes of the conference machine to expand its application scenarios.

[0084] A first aspect of this application provides a conference machine. Figure 1 This is a schematic structural block diagram of a conference machine provided as an embodiment of this application. Figure 1 As shown, the conference system includes a display 100, a display driver board 200, a system board 300, a first multiplexer board 400, and a second multiplexer board 500. The system board 300 is provided with an external output signal port 310, and the first multiplexer board 400 is provided with an external input signal port 410. The first multiplexer board 400 is electrically connected to the input terminals of the system board 300 and the display driver board 200, respectively. The second multiplexer board 500 is electrically connected to the output terminals of the system board 300, the display 100, and the display driver board 200, respectively.

[0085] Exemplarily, the input signal external port 410 can be used to access an external signal source, such as a computer host, a notebook computer, a tablet computer, a smart phone, and the like, which is not specifically limited in the embodiment of the present application. The external signal source accessed by the input signal external port 410 can be used to provide display data to display a picture on the display 100, and the display data provided by the external signal source can be used for the office mode requirement of the conference machine, and the conference machine can be used as a display screen or an extended display secondary screen of the external signal source.

[0086] Exemplarily, the output signal external port 310 can be used to access other displays, computers, smart phones, and the like, and the data output from the output signal external port 310 can be used to display a picture on the other displays, and the like, and the other displays can be used as an extended display secondary screen of the conference machine.

[0087] Exemplarily, the display drive board 200 can convert and process the multimedia signal provided by the first multi-channel signal selection board 400, and the multimedia signal provided by the first multi-channel signal selection board 400 to the display drive board 200 is from the multimedia signal received by the input signal external port 410.

[0088] It should be noted that the multimedia signal can include an audio data signal and a video data signal.

[0089] Exemplarily, the system board 300 can be used as a central control board of the conference machine, and the system board 300 can provide the audio and video data acquired by the camera of the conference machine to the display to realize the conference mode of the conference machine.

[0090] It should be noted that, Figure 1 The number of the output signal external port 310 is two, and the number of the input signal external port 410 is two, Figure 1 which is only illustrative and not specifically limited in the present application.

[0091] It should be noted that the conference machine provided by the embodiment of the present application includes the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500, and according to the requirement of the application scene mode of the conference machine, the conference machine can further include more multi-channel signal selection boards, and the more the number of the multi-channel signal selection boards, the more the working modes of the conference machine, and the number of the multi-channel signal selection boards in the conference machine is not specifically limited in the embodiment of the present application.

[0092] In some examples, the conference machine switches between different working modes by controlling the multimedia signal transmission states of the system board 300 and the first and second multi-path signal selection boards 400 and 500 respectively, and controlling the multimedia signal transmission states of the display driving board 200 and the first and second multi-path signal selection boards 400 and 500 respectively, wherein the multimedia signal transmission states include multimedia signal transmission on and multimedia signal transmission off.

[0093] In some examples, when the system board 300 and the first and second multi-path signal selection boards 400 and 500 are in the on state of the multimedia signal transmission state, and the display driving board 200 and the first and second multi-path signal selection boards 400 and 500 are in the off state of the multimedia signal transmission state, the conference machine can work in the conference mode. When the conference machine is in the conference mode, the system board 300 can transmit multimedia signals to external devices through the output signal external port 310, and can also receive multimedia signals of external signal sources through the input signal external port 420 of the first multi-path signal selection board 400, and can transmit multimedia signals to the display 100 through the second multi-path signal selection board 500. The multimedia signals transmitted by the system board 300 to the display 100 through the second multi-path signal selection board 500 can be external signal sources received through the input signal external port 410, or multimedia signals obtained by the camera of the conference machine. In the conference mode, the display driving board 200 does not access the multimedia signal transmission path.

[0094] In some examples, when the system board 300 and the first and second multi-path signal selection boards 400 and 500 are in the off state of the multimedia signal transmission state, and the display driving board 200 and the first and second multi-path signal selection boards 400 and 500 are in the on state of the multimedia signal transmission state, the conference machine can work in the office mode. In the office mode, the first multi-path signal selection board 400 transmits the multimedia signals of external signal sources received through the input signal external port 410 to the display driving board 200, the display driving board 200 converts and processes the received multimedia signals and transmits them to the second multi-path signal selection board 500, and the second multi-path signal selection board 500 transmits the multimedia signals to the display 100 to display and play the audio and video signals provided by the external signal source on the display 100.

[0095] It should be noted that when the conference machine is operating in both office and meeting modes, all signal connections between the system board 300 and the first and second multiplexer boards 400, excluding multimedia signals, remain open. These other signals may include interactive command signals. In office mode, although the multimedia signal transmission between the system board 300 and the first and second multiplexer boards 400 and 500 is disconnected, command signal interaction between the system board 300 and the first and second multiplexer boards 400 and 500 can still occur normally. The continuity of multimedia signal transmission between the system board 300 and the first and second multiplexer boards 400 and 500 does not affect the continuity of other signal transmissions; the multimedia signal transmission on the system board 300 is independent of the transmission of other signals.

[0096] For example, Figure 2 A schematic structural block diagram of another conference machine provided in an embodiment of this application. (See diagram below.) Figure 2 As shown, a typical conference system includes a display screen, a T-con board, and a system board. The system board has HDMI IN and HDMI OUT external ports. The HDMI IN port is used to connect to external signal sources, and the HDMI OUT port is used to transmit signals to external devices. HDMI (High Definition Multimedia Interface) is a fully digital video and audio transmission interface that can transmit uncompressed audio and video signals. The system board and the T-con board transmit audio and video signals via an eDP (Embedded DisplayPort, an internal digital interface based on the DisplayPort architecture and protocol) interface. The T-con board is used to control the timing signals of the display screen. The conference system has only one HDMI input and two HDMI outputs, i.e., one HDMI IN external port and two HDMI OUT external ports. The conference system only supports conference mode and can only be used in conference scenarios. Conference systems usually have a built-in camera, so the input signal is processed according to camera mode, which only supports fixed parameter input and cannot support multiple video source formats like office monitors. Furthermore, as a desktop conference system, to achieve compatibility between office and conference scenarios, a separate office monitor needs to be connected, increasing desktop space and budget. Meeting machines that only support meeting mode have limited application scenarios, which will reduce their usage frequency and necessity.

[0097] The conference machine provided by the embodiments of the present application can realize the switching of the signal transmission state of the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 and the signal transmission state of the display driving board 200, so that the working mode of the conference machine is switchable. By increasing the first multi-channel signal selection board 400, the second multi-channel signal selection board 500 and the display driving board 200, the number of multimedia signal transmission channels can be increased. Based on the combination of the disconnection and conduction of different multimedia signal transmission channels, different working modes of the conference machine can be obtained, and the working mode of the conference machine is increased, so that the conference machine is not limited to the conference mode, but can also be compatible with the office mode, so that the application scenarios of the conference machine can be compatible with multiple working modes such as conference and office, and the cost and space occupation of the existing conference machine for compatibility with office can be avoided.

[0098] In some embodiments, the system board 300 comprises a mode switching module; the mode switching module is used for controlling the working mode switching of the conference machine, and the working mode comprises a first working mode and a second working mode. In the case that the conference machine is in the first working mode, the multimedia signal transmission channel of the first multi-channel signal selection board 400 and the display driving board 200 is disconnected, the multimedia signal transmission channel of the first multi-channel signal selection board 400 and the system board 300 is connected, the multimedia signal transmission channel of the second multi-channel signal selection board 500 and the display driving board 200 is disconnected, and the multimedia signal transmission channel of the second multi-channel signal selection board 500 and the system board 300 is connected. In the state of the first working mode, the multimedia signal of the external signal source can be transmitted to the system board 300 through the first multi-channel signal selection board 400, the system board 300 converts and processes the received multimedia signal and transmits it to the second multi-channel signal selection board 500, and the second multi-channel signal selection board 500 converts and processes the received multimedia signal and transmits it to the display 100. The signal of the camera provided by the conference machine can also be transmitted to the display 100 through the second multi-channel signal selection board 500. The first working mode of the conference machine can be applied to the conference mode of the conference machine, and the display driving board 200 can be used to process the data signal used for office of the external signal source for the demand of the office scenario. In the first working mode, the display driving board 200 is disconnected from the multimedia transmission channel, that is, the multimedia signal transmission channel of the office mode is disconnected.

[0099] In some embodiments, when the conference machine is in the second working mode, the multimedia signal transmission channel between the first multi-channel signal selection board 400 and the display driving board 200 is turned on, the multimedia signal transmission channel between the first multi-channel signal selection board 400 and the system board 300 is turned off, the multimedia signal transmission channel between the second multi-channel signal selection board 500 and the display driving board 200 is turned on, and the multimedia signal transmission channel between the second multi-channel signal selection board 500 and the system board 300 is turned off. In the second working mode, the multimedia signal of the external signal source can be transmitted to the display driving board 200 through the first multi-channel signal selection board 400, the display driving board 200 converts and processes the received multimedia signal and transmits it to the second multi-channel signal selection board 500, and the second multi-channel signal selection board 500 processes the received multimedia signal and sends it to the display 100. The multimedia signal transmission channels between the system board 300 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 are all turned off, which can isolate the transmission of multimedia signals of the camera provided by the conference machine, and isolate the channel for transmitting multimedia signals to external devices, and can realize the office mode scene requirement, that is, disable the camera function and disable the function of transmitting data to external devices in the office mode, which can ensure the confidentiality and security of data in the office process.

[0100] For example, the mode switching module can be a pulse trigger, which can be a pulse trigger in the form of a key structure, or a pulse trigger in the form of an electrically controlled switch circuit. The structure and type of the mode switching module are not limited in the embodiments of the present application. The pulse trigger can generate different pulse signals through different trigger forms, such as low-level pulse signals and high-level pulse signals, etc. Different pulse signals can be set according to the mode type of the mode switching mode. The electrically controlled switch circuit can be controlled by a touch signal or a remote control switch, etc. The embodiments of the present application are not limited.

[0101] For example, the mode switching module can include a first state and a second state. For example, the first state corresponds to the pressed state of the mode switching module of the key structure, and the second state corresponds to the unpressed state of the key structure. The first state can correspond to a low-level pulse trigger, and the second state can correspond to a high-level pulse trigger. When the mode switching module is switched to the first state, the system board 300 can send a first control signal to the first multi-channel signal selection board 400 and a second control signal to the second multi-channel signal selection board 500. The first control signal is used to control the disconnection of the multimedia signal transmission channel between the first multi-channel signal selection board 400 and the display driving board 200, and to control the conduction of the multimedia signal transmission channel between the first multi-channel signal selection board 400 and the system board 300. The second control signal is used to control the disconnection of the multimedia signal transmission channel between the second multi-channel signal selection board 500 and the display driving board 200, and to control the conduction of the multimedia signal transmission channel between the second multi-channel signal selection board 500 and the system board 300. The first state of the mode switching module can correspond to the first working mode of the conference machine.

[0102] For example, when the mode switching module is switched to the second state, the system board 300 can send a third control signal to the first multi-channel signal selection board 400 and a fourth control signal to the second multi-channel signal selection board 500. The third control signal is used to control the disconnection of the multimedia signal transmission channel between the first multi-channel signal selection board 400 and the system board 300, and to control the conduction of the multimedia signal transmission channel between the first multi-channel signal selection board 400 and the display driving board 200. The fourth control signal is used to control the disconnection of the multimedia signal transmission channel between the second multi-channel signal selection board 500 and the system board 300, and to control the conduction of the multimedia signal transmission channel between the second multi-channel signal selection board 500 and the display driving board 200. The second state of the mode switching module can correspond to the second working mode of the conference machine.

[0103] For example, in the first working mode or the second working mode, the transmission channel of the control signal between the system board 300 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 is in conduction.

[0104] For example, the disconnection and conduction of the multimedia signal transmission channel can be realized by the on-off of the switching circuit, which can include transistors or other forms of switching devices, etc.

[0105] It should be noted that the system board 300 can also be provided with a control module for signal interaction, which is used to realize the instruction interaction between the conference machine and the user in the conference mode, such as touch signal interaction, key signal interaction, mouse control signal interaction, and signal interaction between external devices and the conference machine, etc. The first multi-channel signal selection board 400 can be provided with a signal transmission module for human-computer interaction to realize the signal interaction between external devices and the conference machine.

[0106] In some embodiments, the input signal external port 410 can include an HDMI input port and a DP (DisplayPort) input port. The output signal external port 310 can include an HDMI output port and a DP output port.

[0107] An exemplary, Figure 3 Another schematic structural block diagram of a conference machine is provided in the embodiments of the present application. As Figure 3 shown, the conference machine can further include a timing control board 600 connected between the second multi-channel signal selection board 500 and the display 100; the input signal external port includes an HDMI output port HDMIOUT and a mode switching module 320. The first multi-channel signal selection board 400 includes an HDMI input port HDMIIN and a DP input port DP IN.

[0108] Referring to Figure 3 , the system board 300 and the first multi-channel signal selection board 400 transmit multimedia signals through a first HDMI interface HDMIIN 1 and a first DP interface DP IN 1, the first multi-channel signal selection board 400 and the display driving board 200 transmit multimedia signals through a second HDMI interface HDMIIN 2 and a second DP interface DP IN 2. The system board 300 and the second multi-channel signal selection board 500 transmit multimedia signals through a first eDP interface eDP1, the display driving board 200 and the second multi-channel signal selection board 500 transmit multimedia signals through a second eDP interface eDP2, and the second multi-channel signal selection board 500 and the timing control board 600 transmit multimedia signals through an eDP interface. The system board 300 transmits control signals to the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 through separate channels respectively.

[0109] It should be noted that the arrow direction in the drawings of the embodiments of the present application is only an exemplary illustration, and is not a specific limitation in the embodiments of the present application.

[0110] It should be noted that generally the conference machine has only one mode, i.e. conference mode, supports one HDMI input and two HDMI outputs, but limited by the processing mode of the existing system control chip, the input signal is processed according to the camera mode, which can only support fixed parameter input, and cannot support multiple format input video sources like office displays.

[0111] The conference machine provided by the embodiments of the present application increases a DP input port DP IN, can match more video source devices, that is, can be compatible with more external signal sources. Two new multi-channel signal selection boards are added, the first multi-channel signal selection board 400 can select the output channel of the input HDMI and DP signals, and the second multi-channel signal selection board 500 can select the input channel of the eDP signal. The display driving board 200 is added, which can be used for display signal conversion and processing in the office mode. The mode switching module is added, which can be used for switching the conference mode and the office mode of the conference machine. The HDMI IN and DP IN ports for accessing external signal sources each have only one, and when the working mode is switched, the user does not need to perform the plugging and unplugging operation of the cable, thereby facilitating the user to use.

[0112] In some embodiments, the conference machine further comprises an HDMI signal conversion module, which is configured to convert the signal received by the HDMI input port into a MIPI (Mobile Industry Processor Interface) signal.

[0113] In some embodiments, the conference machine further comprises a DP signal conversion module, which is configured to convert the signal received by the DP input port into a MIPI signal.

[0114] For example, the system board 300 and the display driving board 200 can each comprise an HDMI signal conversion module and a DP signal conversion module.

[0115] For example, Figure 4 A schematic structural block diagram of a system board provided by the embodiments of the present application is shown in FIG. 2. As shown in FIG. 2, the system board 300 comprises a system processor 310, a system memory 320, a system bus 330, a display driving board 200, a mode switching module 400, a first multi-channel signal selection board 500, a second multi-channel signal selection board 600, a DP input port DP IN, and an HDMI input port HDMI IN. Figure 4As shown, the conference machine supports two camera inputs and an HDMI signal input, and the two camera inputs correspond to Camera0 and Camera1 respectively, and correspond to two MIPI signal paths, namely MIPI(CSI0) and MIPI(CSI1). The system board can include a control circuit 330, which can include a SOC (system control chip) in an example. For example, the SOC can use a chip of QCS8250 model. Since the SOC does not support the input of display signals, only supports the mode of camera video signal collection, and converts the video signal decodable by the SOC through the built-in ISP (image signal processing), the conference machine designs a signal conversion circuit, namely HDMI to MIPI(CSI), which is a short form of Channel State Information, which can convert the HDMI signal into the MIPI signal (CSI mode) and simulate a camera to obtain two MIPI paths, namely MIPI(CSI2) and MIPI(CSI3), so as to be recognized and decoded by the ISP module built-in the SOC, and realize the recognition of the input video signal.

[0116] In an example, since the MIPI signal interface can only support video collection of 4K@30fps at most, a single interface cannot meet the display requirement of 4K@60hz, and the current conference machine uses a display screen of 4K@60Hz, which needs to occupy two MIPI channels. In this case, one HDMI is equivalent to two cameras, which needs to occupy two ISP channels, and the SOC used at present can only support two ISPs for decoding and video processing at the same time, resulting in a conflict between the HDMI input and the camera, and the two cannot be compatible with each other, that is, the channel of the input HDMI signal and the camera input cannot be used at the same time.

[0117] In an example, Figure 5 Another schematic structural block diagram of a system board provided by an embodiment of the present application is provided. As shown in Figure 5As shown, the conference machine provided by the embodiments of the present application increases the input of the DP signal, increases the second signal switching module DATA Switch3, increases the HDMI signal conversion module HDMI to MIPI(CSI) and the DP signal conversion module DP to MIPI(CSI), and correspondingly obtains two MIPI paths of MIPI 0 / 1 and MIPI 2 / 3. The control circuit 330 increases the state judgment mechanism, and through the second signal switching module DATA Switch3, realizes that when starting the conference mode, the priority of the camera is improved, and the video input path is disconnected; in the office mode, the priority of the video input path is improved, and the camera input channel is disconnected. The switching between the office mode and the conference mode can be jointly determined by the external button and the software running state.

[0118] For example, the camera input channel can be a data channel formed by the connection of the camera and the corresponding data processing and transmission circuit and device. The multimedia signal transmission channel also includes the whole path of the port, line, circuit and device.

[0119] It should be noted that, Figure 5 The HDMI signal and the DP signal shown are from the first multi-path signal selection board 400.

[0120] For example, the second signal switching module DATA Switch3 is used to disconnect the camera input channel in the second working mode, that is, to disconnect MIPI(CSI0) and MIPI(CSI1); the second signal switching module DATA Switch3 is used to turn on the camera input channel in the first working mode, that is, to turn on MIPI(CSI0) and MIPI(CSI1).

[0121] For example, the camera input channel includes multiple, and the second signal switching module DATA Switch3 is used to disconnect one or more camera input channels based on the second input selection instruction in the first working mode, and establish one or more multimedia signal transmission channels between the system board and the first multi-path signal selection board. The multimedia signal transmission channel can include a video input path. For example, in the first working mode, the control circuit 330 can send a second input selection instruction to the second signal switching module DATA Switch3, and the second signal switching module DATA Switch3 controls one of MIPI(CSI0) and MIPI(CSI1) to be disconnected and the other to be turned on according to the second input selection instruction, and controls MIPI 0 / 1 and MIPI 2 / 3 to be turned on respectively.

[0122] Exemplarily, the second input selection instruction can be a selection instruction issued by a user, or can be different input modes corresponding to working modes of the conference machine, and embodiments of the present application do not make specific limitation.

[0123] Exemplarily, according to the judgment of the conference mode and the office mode, when in the conference mode, the camera channel is opened, the video input channel is closed, MIPI (CSI0) and MIPI (CSI1) correspond to the camera channel, and MIPI (CSI2) and MIPI (CSI3) correspond to the video input channel. At this time, the HDMI or DP signal is accessed, and the conference machine does not process. When in the office mode, the video input channel is opened, the camera is closed, and all operations of opening the camera are not responded, the display screen displays "current office mode, camera disabled", and the user is reminded.

[0124] For the case of video input display in the conference mode, a user selects to close one camera, thereby releasing one MIPI channel, and realizing the video input of the highest 4K@30Hz. For this case, the SOC selects the input channel according to the HDMI to MIPI and DP to MIPI chip output channel, and displays on the display screen as a conference supplement.

[0125] Exemplarily, the video input default state is HDMI signal input. If the HDMI input port receives a hot plug insertion signal, the HDMI input channel is maintained, the SOC judges the input signal, and the signal is received. If the DP input port receives a hot plug insertion signal, the DP input channel is switched, the SOC judges the input signal, and the signal is received. If both ports have signal access, the display screen pops up the signal input selection prompt information of HDMI input and DP, and the user selects the input source to generate the first input selection instruction. The second signal switching module can switch the signal transmission of the HDMI input channel and the DP input channel based on the first input selection instruction.

[0126] The second signal switching module DATA Switch3 can be used for channel selection control of HDMI signal and DP signal input, and can also be used for selection control of multimedia signal transmission channel and camera channel.

[0127] In some embodiments, the conference machine further comprises a first signal switching module, which can be arranged in at least one of the system board 300, the first multi-channel signal selection board 400 and the display driving board 200.

[0128] Exemplarily, the first signal switching module is arranged on the display driving board 200, and is used for switching signal transmission between the HDMI input channel and the DP input channel based on a first input selection instruction in the case that the HDMI input port and the DP input port are both connected to an external signal source. The first input selection instruction is a selection instruction made by a user based on signal input selection prompt information.

[0129] Exemplarily, the system board control logic adds working mode switching control judgment, and mode switching is controlled by an external key signal. Since the key signal is triggered by a low-level pulse and does not maintain a low-level state at all times, the switching logic adopts a sequential rotation mode, that is, a default conference mode, entering an office mode under an odd number, and entering a conference mode under an even number. In the office mode, the system board closes the video processing unit and does not support the HDMIOUT function. In the conference mode, the system board processes video signals and supports the HDMIOUT function. Different display paths are selected according to different modes.

[0130] Exemplarily, the system board controls two signal selection boards to select paths according to the current mode. In the conference mode, the input signals of the first multi-path signal selection board 400 are all switched to the input port of the system board, and the channels of the second multi-path signal selection board 500 are switched to the eDP output interface of the system board. In the office mode, the input signals of the first multi-path signal selection board 400 are all switched to the input port of the display driving board, and the channels of the second multi-path signal selection board 500 are switched to the eDP output interface of the display driving board.

[0131] The conference machine provided by the embodiment of the present application expands the working mode of the conference machine, solves the display specification limitation caused by input video format analysis based on the camera mode, supports more display specifications in the office mode, and facilitates access to different signal sources for office work. Exemplarily, the display specification can include resolution and refresh rate and the like. The display input ports in the conference mode are all reserved, and the DP IN port is expanded, so that the switching of the video source can still be supported in the conference mode, and external video source information can be shared.

[0132] In some embodiments, the system board 300 comprises a charging wire interface, a control circuit, a first data switching module, a second data switching module and a charging switching module, the charging wire interface is used for transmitting current and digital signals, the charging wire interface is electrically connected with the charging switching module, the control circuit, the first data switching module and the second data switching module respectively, and the output signal external port is electrically connected with the first data switching module and the second data switching module respectively; the charging wire interface comprises a first communication protocol detection pin, a second communication protocol detection pin and a first plug detection pin, and the charging switching module is electrically connected with the first communication protocol detection pin, the second communication protocol detection pin, the first plug detection pin and the control circuit respectively. The control circuit is used for sending a mode switching signal to the charging switching module, and the mode switching signal comprises a normal mode signal and a shared mode signal; the mode switching signal is generated based on a charging mode switching instruction, and the charging mode switching instruction can correspond to a key state of the charging mode switching module. The charging switching module outputs a first detection signal under the control of the normal mode signal, and a reverse charging channel of the charging wire interface is turned on under the control of the first detection signal in the case that the charging wire interface accesses an external device; the charging switching module outputs a second detection signal under the control of the shared mode signal, and a transmission channel of the output signal external port is always turned on under the control of the second detection signal in the case that the output signal external port accesses an external device. The charging switching module is in a normal charging mode in the case that the normal mode is received, and in the normal charging mode, the reverse charging channel of the charging wire interface is turned on in the case that the charging wire interface accesses an external device, and the reverse charging channel of the charging wire interface comprises the connected charging wire interface, the first data switching module and the power management module. The charging switching module is in a shared charging mode in the case that the shared mode is received, and in the shared charging mode, the transmission channel of the output signal external port is always turned on in the case that the output signal external port accesses an external device, and the transmission channel of the output signal external port comprises the connected output signal external port, the second data switching module and the control circuit.

[0133] It should be noted that the external device accessed by the charging wire interface can be a mobile phone, a tablet computer, a smart watch and the like, and the embodiments of the present application are not limited specifically.

[0134] For example, the normal mode signal can make the reverse charging priority of the charging wire interface higher than the conduction of the multimedia signal transmission channel of the output signal port. In the shared mode, the reverse charging channel and the multimedia signal transmission channel can be turned on at the same time, and the conduction state of the multimedia signal transmission channel is not affected by the access of the external device to the charging wire interface.

[0135] For example, Figure 6 A schematic structural diagram of a system board provided by the embodiments of the present application is as follows, Figure 6As shown, the system board 300 includes a control circuit 330, a power management module 340, a first HDMI output port HDMIOUT1, a second HDMI output port HDMIOUT2, a charging cable interface, an expansion / adapter board MST HUB, a first data switching module Data Switch1, a second data switching module Data Switch2, and a fast charging protocol module PD Controller. Figure 6 As shown, the charging cable interface can be a Type-C interface, and the power management module 340 can be a power management chip.

[0136] For example, such as Figure 6 As shown, Type-C Power represents the power signal, CC1 / CC2 represents the plug-in detection signal (CC1 and CC2 correspond to the correct and reverse plug-in signals, respectively), SBU1 and SBU2 represent the headphone signal, Type-C SSTX / RX1 and Type-C SSTX / RX2 represent the USB 3.1 data signal, USB DM / DP represents the USB 2.0 data signal, and Type-C DET represents the plug-in detection signal. The plug-in detection signals of CC1 / CC2 are provided to the power management module 340, and the plug-in detection signal of Type-C DET is provided to the first data switching module Data Switch1 and the second data switching module Data Switch2. HDMIDATA / CLK represents the data clock signal, DDC represents the digital signal, and HDP represents the hot-plug detection signal. DP out Data1 is the video signal data output by the first data switching module Data Switch1, and DP out Data2 is the video signal data output by the second data switching module Data Switch2. HDP (CC1) uses the CC1 channel to transmit the hot-plug detection signal. AUX CH represents the DDC channel.

[0137] For example, such as Figure 6 As shown, the first communication protocol detection pin can be used to transmit the CC1 signal, the second communication protocol detection pin can be used to transmit the CC2 signal, and the first insertion / removal detection pin can be used to transmit the Type-C DET signal. The HPD signal can be transmitted through the second insertion / removal detection signal.

[0138] The conference machine supports two-way HDMI output, but the output shares the data channel of type-c, although it does not occupy the USB signal channel and does not occupy the CC detection port. In theory, USB2.0 and HDMI OUT can be applied at the same time, but in actual application, when a type-c connection line is inserted, the automatic switching mode (type-c priority is higher than HDMI OUT) is automatically switched, the HDMI OUT output is cut off, and if HDMI OUT output is required, type-c cannot be connected. This results in that when multiple screens are displayed, the mobile phone and other external devices cannot be charged at the same time. For the case where wireless charging is not available or is limited by the power of wireless charging and fast charging is required, only a separate charger can be selected. Due to the actual application of the conference machine multi-screen linkage display design, 1-way HDMIIN input and 2-way HDMIOUT output are supported, and it is desired to realize two-screen or three-screen linkage through the HDMI interface of an ordinary display or another two conference machines. While meeting, the PPT content is displayed on a secondary screen, and the other secondary screen records the meeting content or sends text communication information, which does not affect the current meeting. The demand scenario for HDMI OUT makes users tend not to always plug in and plug out the cable, which greatly limits the fast charging function of the conference machine.

[0139] For example, referring to Figure 6 When it is detected that the Type-c is not connected to an external device, the pin signal corresponding to the Type-c DET is pulled high; when it is detected that the Type-c is connected to an external device, the pin signal corresponding to the Type-c DET is pulled low. Therefore, inserting an external device connection line will inevitably cause the signal of HDMIOUT1 and HDMIOUT2 to be cut off and converted to Type-c mode; without inserting an external device connection line, it is converted to HDMIOUT mode, and the two modes cannot coexist, that is, the signal channels corresponding to Type-c and HDMIOUT cannot be turned on at the same time. At this time, HDMIOUT and Type-c reverse charging cannot be implemented at the same time.

[0140] As shown in the figure, the signal channel switching corresponding to Type-c and HDMIOUT is all judged by the same detection signal, and the judgment logic is shown in Table 1. Table 1 is a signal comparison table of the signal channel switching logic corresponding to Type-c and HDMIOUT.

[0141]

[0142] Table 1

[0143] As Figure 6As shown, the fast charging protocol module PD Controller can be a fast charging protocol chip, which relies on external input Type-c state for judgment. When CC1 / CC2 and the HDP (CC1) of the PD Controller are connected, external state information cannot be received, and the HPD state of HDMIOUT is obtained. At the same time, Type-c connection line cannot be accessed, otherwise the channel is switched to Type-c mode, and HDMIOUT will no longer be displayed.

[0144] To solve this problem, Type-c DET and CC1 / CC2 state signals need to be distinguished to disconnect the associated state between the above states, so as to realize the simultaneous use of Type-c charging and HDMIOUT function.

[0145] In some embodiments, Figure 7 Another schematic structural block diagram of a system board provided by an embodiment of the present application is provided. As shown, Figure 7 As shown, the conference machine provided by the embodiment of the present application is electrically connected with the power management module 340 and the first data switching module DataSwitch1. The fast charging protocol module PD Controller is connected between the first data switching module DataSwitch1 and the second data switching module DataSwitch2. The charging switching module includes an AND gate circuit, a controllable switch, a selection switch, and a triode Q1. The output end of the first plug detection pin is electrically connected with the input end of the controllable switch. The output end of the controllable switch is respectively electrically connected with the first data switching module DataSwitch1 and the second data switching module DataSwitch2.

[0146] Reference Figure 7The first communication protocol detection pin and the second communication protocol detection pin are connected to the input end of the OR gate circuit respectively, and the output end of the OR gate circuit and the first data switching module are connected with a selection switch. The input end of the OR gate circuit is connected to CC1 and CC2, that is, CC1 and CC2 are connected in parallel with the OR gate circuit. The OR gate circuit and the selection switch are connected in series, and the common mode charging signal (CC2) signal output by the selection switch is transmitted to the power management module 340 through the first data switching module Data Switch1. The control circuit 330 is used for sending a mode switching signal to the controllable switch and the selection switch, the first electrode of the triode Q1 is connected with the output end of the controllable switch, the second electrode of the triode Q1 is grounded, and the third electrode of the triode Q1 is used for inputting the mode switching signal; the normal mode signal is used for controlling the controllable switch to be turned on, the selection switch to be turned off, and the triode Q1 to be turned off, that is, when the control circuit 330 sends the normal mode signal to the controllable switch and the selection switch, the controllable switch is turned on, the selection switch is turned off, and the triode Q1 is turned off, then the controllable switch can output the first detection signal, the controllable switch can output the first detection signal without being affected, the selection switch has no signal output, the first detection signal controls the first data switching module Data Switch1 and the second data switching module Data Switch2 to switch between the DP out Data2 and the Type-c signal, and the transmission channel of the input signal external port can be selected to be turned on, that is, the Type-c port has no external device connected, in the case that the HDMIOUT1 and the HDMI OUT1 are connected with external devices, under the control of the first detection signal, the HDMIOUT1 and the HDMIOUT1 corresponding signal transmission channel is turned on; the Type-c port is connected with external devices, under the control of the first detection signal, whether the HDMIOUT1 and the HDMIOUT1 are connected with external devices or not, the Type-c port is switched to be turned on, and the HDMIOUT1 and the HDMIOUT1 are turned off.

[0147] Reference Figure 7, the common mode signal can be used to control the controllable switch to be turned off, the selection switch to be turned on, and the transistor Q1 to be turned on, so that the detection signal output by the controllable switch is pulled low to ground by Q1, and the selection switch can output a common mode charging (CC2) signal, that is, a second detection signal. In the case that the Type-c is connected to an external device, the power management module 340 can output a reverse charging signal to charge the external device in reverse. In addition, since the controllable switch output signal potential is pulled low, whether the Type-c is connected to an external device or not, the conduction of the transmission channel of the output signal external port can not be affected, and in the case that the output signal external port is connected to an external device, it can be always on, that is, the first data switching module Data Switch1 can also force the HDMIOUT to be always effective, and the Type-c interface can realize reverse charging and partial data signal transmission. The detection signal output by the controllable switch no longer follows the Type-c DET change, and becomes a constant low state, whether or not the Type-c is inserted, it is in the DP OUT mode (MSTHUB is converted into an HDMIOUT signal).

[0148] It should be noted that the detection signal output by the controllable switch in the normal mode signal can be used as the first detection signal, and the signal output by the selection switch in the common mode signal can be the second detection signal.

[0149] It should be noted that CC1 and CC2 are connected in parallel to the OR circuit, and whether the CC1 detects a signal or the CC2 detects a signal in the Type-c interface, that is, whether the Type-c interface line is connected in positive or negative, the selection switch circuit can control the signal output. Under the action of the common mode signal, the signal output by the selection switch is used for the power management module 340 to determine whether to open the reverse charging channel.

[0150] In addition, the power management module 340 can be used to determine whether to open the reverse charging channel of the charging line interface according to the signal of the selection switch output end, the signal of the first communication protocol detection pin, and the signal of the second communication protocol detection pin. That is, in the common mode, if CC1 and CC2 detect that there is an external device connected to the Type-c interface, the reverse charging channel of the charging line interface can be opened.

[0151] As Figure 7 mentioned, the key signal can come from the charging mode switching key of the system board, and the SPI signal represents the fast charging protocol signal. It should be noted that the key for charging mode switching and the key for conference machine working mode switching can be different key buttons set independently.

[0152] In the normal mode, the controllable switch is turned on, the selection switch is turned off, and the triode is turned off. The controllable switch outputs a first detection signal, and in the case where the charging line interface accesses an external device, the reverse charging channel of the charging line interface is turned on. In the shared mode, the controllable switch is turned off, the selection switch is turned on, and the triode is turned on. The selection switch outputs the second detection signal, and in the case where the output signal external port accesses an external device, the transmission channel of the output signal external port is always turned on.

[0153] The conference machine provided in the embodiment of the present application adds a mode switching signal in the system board 300, controls the states of the Type-c DET detection signal and the CC1 and CC2 detection signals, ensures that the HDMI OUT is normally output in the shared mode, and can perform Type-c reverse charging at the same time. In the HDMI OUT display state, the HPD signal occupies the CC1 signal channel, and the charging state signal occupies the CC2 signal channel, so as to enable the power management module 340 to perform charging state judgment and control.

[0154] In the normal mode signal, the CC1 / 2 signal is not output, and therefore does not affect the signal state logic in the original design. In the shared mode, the CC signal is output and occupies the CC2 channel. Since an OR gate is used in the front end, as long as the Type-c is accessed, the power management module 340 can determine that the Type-c is accessed, regardless of the direction, and the reverse charging function is realized. Since the CC1 and CC2 are mainly used to determine the Type-c direction and determine the data transmission channel, only charging is required, and the direction determination is not required, and the USB Type-c protocol is also met.

[0155] For example, the charging mode switching is controlled by an external key signal. Since the key signal is a low-level pulse trigger, the low-level state is not maintained all the time, and the switching logic adopts a sequential rotation mode, that is, the normal mode is used by default, the shared mode is used under odd number pressing, and the normal mode is used under even number pressing. Different mode signal levels are output according to different modes.

[0156] The conference machine provided in the embodiment of the present application determines whether the reverse charging function is turned on according to the CC1 / CC2 state judgment of the Type-c insertion state when switching to the normal mode, and determines whether the reverse charging function is turned on according to the HPD signal judgment of the external HDMI device insertion and the CC1 / 2 signal judgment of the Type-c insertion when switching to the shared mode. Since the shared mode does not switch to the full-function Type-c mode, the judgment of this case is not considered.

[0157] The conference machine provided by the embodiments of the present application optimizes Type-c cable insertion detection and CC1 / CC2 direction detection, adds common mode detection function on the basis of retaining original detection function, and realizes identification and detection of reverse charging function when Type-c 3.1 data is used for extended display.

[0158] In a second aspect, the embodiments of the present application provide a conference machine control method, applied to the conference machine as described in the first aspect, and the control method comprises:

[0159] The multimedia signal transmission states of the system board with the first multi-channel signal selection board and the second multi-channel signal selection board are controlled, and the multimedia signal transmission states of the display driving board with the first multi-channel signal selection board and the second multi-channel signal selection board are controlled, so as to control the conference machine to switch between different working modes, wherein the multimedia signal transmission state includes a multimedia signal transmission on state and a multimedia signal transmission off state.

[0160] In some examples, the multimedia signal transmission states of the system board 300 with the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 are both in the on state, and the multimedia signal transmission states of the display driving board 200 with the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 are both off, so that the conference machine can work in the conference mode. When the conference machine is in the conference mode, the system board 300 can transmit multimedia signals to external devices through the output signal external port 310, can receive multimedia signals from external signal sources through the input signal external port 420 of the first multi-channel signal selection board 400, and can transmit multimedia signals to the display 100 through the second multi-channel signal selection board 500. The multimedia signals transmitted by the system board 300 to the display 100 through the second multi-channel signal selection board 500 can be external signal sources received through the input signal external port 410, or multimedia signals obtained by a camera of the conference machine. In the conference mode, the display driving board 200 does not access the multimedia signal transmission path.

[0161] In some examples, the system board 300 is disconnected from the multimedia signal transmission states of the first multi-path signal selection board 400 and the second multi-path signal selection board 500, and the display driving board 200 is connected to the multimedia signal transmission states of the first multi-path signal selection board 400 and the second multi-path signal selection board 500, respectively, and the conference machine can work in the office mode. In the office mode, the first multi-path signal selection board 400 transmits the multimedia signal of the external signal source received through the input signal external port 410 to the display driving board 200, the display driving board 200 converts and processes the received multimedia signal and transmits it to the second multi-path signal selection board 500, and the second multi-path signal selection board 500 transmits the multimedia signal to the display 100 to display and play the audio and video signal provided by the external signal source on the display 100.

[0162] The conference machine provided by the embodiments of the present application can realize the switching of the working mode of the conference machine by switching the signal transmission states of the first multi-path signal selection board 400 and the second multi-path signal selection board 500 and the signal transmission state of the display driving board 200. By increasing the first multi-path signal selection board 400, the second multi-path signal selection board 500 and the display driving board 200, the number of multimedia signal transmission channels can be increased, and based on the combination of the disconnection and connection of different multimedia signal transmission channels, different working modes of the conference machine can be obtained, thereby increasing the working mode of the conference machine, so that the conference machine is not limited to the conference mode, but can also be compatible with the office mode. The application scenario of the conference machine can be compatible with multiple working modes such as conference and office, which can avoid the cost and space occupation of adding office equipment to the existing conference machine to be compatible with office.

[0163] In some embodiments, the system board includes a mode switching module; the control of the switching of different working modes of the conference machine can include:

[0164] Obtaining a working mode switching instruction.

[0165] For example, the working mode switching instruction can come from the key state switching of the mode switching module.

[0166] Based on the working mode switching instruction, the mode switching module is controlled to switch to the first state to control the conference machine to switch to the first working mode. Or,

[0167] Based on the working mode switching instruction, the mode switching module is controlled to switch to the second state to control the conference machine to switch to the second working mode.

[0168] Exemplarily, the mode switching module can include a first state and a second state, for example, the first state corresponds to the pressed state of the mode switching module of the key structure, and the second state corresponds to the key pop-up state, the first state can correspond to a low-level pulse trigger, and the second state can correspond to a high-level pulse trigger. When the mode switching module is switched to the first state, the system board 300 can send a first control signal to the first multi-channel signal selection board 400 and a second control signal to the second multi-channel signal selection board 500; the first control signal is used to control the disconnection of the multimedia signal transmission channel between the first multi-channel signal selection board 400 and the display driving board 200, and control the conduction of the multimedia signal transmission channel between the first multi-channel signal selection board 400 and the system board 300. The second control signal is used to control the disconnection of the multimedia signal transmission channel between the second multi-channel signal selection board 500 and the display driving board 200, and control the conduction of the multimedia signal transmission channel between the second multi-channel signal selection board 500 and the system board 300. The first state of the mode switching module can correspond to the first working mode of the conference machine.

[0169] When the conference machine is switched to the first working mode, the system board sends a first control signal to the first multi-channel signal selection board and a second control signal to the second multi-channel signal selection board; the first control signal is used to control the disconnection of the multimedia signal transmission channel between the first multi-channel signal selection board and the display driving board, and control the conduction of the multimedia signal transmission channel between the first multi-channel signal selection board and the system board; the second control signal is used to control the disconnection of the multimedia signal transmission channel between the second multi-channel signal selection board and the display driving board, and control the conduction of the multimedia signal transmission channel between the second multi-channel signal selection board and the system board.

[0170] When the conference machine is switched to the second working mode, the system board sends a third control signal to the first multi-channel signal selection board and a fourth control signal to the second multi-channel signal selection board; the third control signal is used to control the disconnection of the multimedia signal transmission channel between the first multi-channel signal selection board and the system board, and control the conduction of the multimedia signal transmission channel between the first multi-channel signal selection board and the display driving board; the fourth control signal is used to control the disconnection of the multimedia signal transmission channel between the second multi-channel signal selection board and the system board, and control the conduction of the multimedia signal transmission channel between the second multi-channel signal selection board and the display driving board.

[0171] In some embodiments, the input signal external port includes an HDMI input port and a DP input port; the control method can further include:

[0172] Detecting whether the input signal external port is connected to an external signal source.

[0173] In the case that the HDMI input port and the DP input port are detected to be connected to external signal sources, a signal input selection prompt information is popped up for the user to select the input of the external signal source.

[0174] A first input selection instruction of the user for the input of the external signal source is acquired.

[0175] Based on the first input selection instruction, the signal transmission switching of the HDMI input channel and the DP input channel is performed.

[0176] Exemplarily, in the conference mode and the office mode, the signal input selection prompt information can be popped up.

[0177] In some embodiments, the system board comprises a camera channel; the control method further comprises:

[0178] In the case that the conference machine is switched to the second working mode, the camera input channel is controlled to be disconnected;

[0179] In the case that the conference machine is switched to the first working mode, the camera input channel is controlled to be connected; or,

[0180] The camera input channel comprises a plurality of channels, and in the case that the conference machine is switched to the first working mode, one or more camera input channels are controlled to be disconnected based on a second input selection instruction to establish one or more multimedia signal transmissions between the system board and the first multi-channel signal selection board.

[0181] In some embodiments, the system board comprises a charging line interface, a control circuit, a first data switching module, a second data switching module and a charging switching module, the charging line interface comprises a first communication protocol detection pin, a second communication protocol detection pin and a first plug detection pin; the control method further comprises:

[0182] The signals of the first communication protocol detection pin, the second communication protocol detection pin and the first plug detection pin are detected respectively;

[0183] and a charging mode switching instruction is acquired;

[0184] Based on the charging mode switching instruction, a mode switching signal is sent to the charging switching module, the mode switching signal comprising a normal mode signal or a shared mode signal;

[0185] Based on the signals of the first communication protocol detection pin, the second communication protocol detection pin and the first plug detection pin, and the normal mode signal, a first detection signal is generated;

[0186] Based on the first detection signal, the reverse charging channel of the charging line interface is controlled to be connected in the case that the charging line interface is connected to an external device; or,

[0187] The second detection signal is generated based on signals of the first communication protocol detection pin, the second communication protocol detection pin and the first plug detection pin, and the common mode signal;

[0188] The transmission channel of the output signal external port is controlled to be turned on in the case that the output signal external port accesses an external device based on the second detection signal.

[0189] The charging mode switching instruction may be generated based on the key state of the charging mode switching key.

[0190] Reference Figure 7 The first communication protocol detection pin and the second communication protocol detection pin are connected to the input end of the OR gate circuit, and the output end of the OR gate circuit is connected with the first data switching module through a selection switch. The input end of the OR gate circuit accesses CC1 and CC2, that is, CC1 and CC2 are connected in parallel with the OR gate circuit. The OR gate circuit is connected in series with the selection switch, and the common mode charging signal (CC2) signal output by the selection switch is transmitted to the power management module 340 through the first data switching module Data Switch1. The control circuit 330 is used to send a mode switching signal to the controllable switch and the selection switch, the first electrode of the triode Q1 is connected with the output end of the controllable switch, the second electrode of the triode Q1 is grounded, and the third electrode of the triode Q1 is used to access the mode switching signal; the normal mode signal is used to control the controllable switch to be turned on, the selection switch to be turned off, and the triode Q1 to be turned off, that is, in the case that the control circuit 330 sends the normal mode signal to the controllable switch and the selection switch, the controllable switch is turned on, the selection switch is turned off, and the triode Q1 is turned off, then the controllable switch can output the first detection signal, the controllable switch can output the first detection signal without being affected, the selection switch has no signal output, and the first detection signal controls the first data switching module Data Switch1 and the second data switching module Data Switch2 to switch between the DP out Data2 and the Type-c signal, so that the transmission channel of the input signal external port can be selected to be turned on, that is, the Type-c port has no external device to be accessed, in the case that the HDMIOUT1 and the HDMI OUT1 access an external device, the HDMIOUT1 and the HDMI OUT1 corresponding signal transmission channel is turned on under the control of the first detection signal; the Type-c port accesses an external device, and under the control of the first detection signal, whether the HDMIOUT1 and the HDMI OUT1 access an external device or not, the Type-c port will be switched to the mode of being turned on, and the HDMIOUT1 and the HDMI OUT1 are turned off.

[0191] Reference Figure 7, the common mode signal can be used to control the controllable switch to be turned off, the selection switch to be turned on, and the transistor Q1 to be turned on, so that the detection signal output by the controllable switch is pulled low by Q1 to ground, and the selection switch can output a common mode charging (CC2) signal, that is, a second detection signal. In the case that the Type-c is connected to an external device, the power management module 340 can output a reverse charging signal to charge the external device in reverse. In addition, since the controllable switch output signal potential is pulled low, whether the Type-c is connected to an external device or not, the conduction of the transmission channel of the output signal external port can not be affected, and in the case that the output signal external port is connected to an external device, the conduction can be always on, that is, the first data switching module Data Switch1 can also force the HDMIOUT to be always effective, and the Type-c interface can realize reverse charging and partial data signal transmission. The detection signal output by the controllable switch is no longer followed by the Type-c DET, and becomes a constant low state, whether the Type-c is inserted or not, it is in the DPOUT mode (MSTHUB is converted into an HDMIOUT signal).

[0192] The conference machine provided by the embodiment of the application adds a mode switching signal in the system board 300, controls the states of the Type-c DET detection signal and the CC1 and CC2 detection signals, ensures that the HDMIOUT is normally output in the switching to the common mode, and can perform Type-c reverse charging at the same time. In the HDMIOUT display state, the HPD signal occupies the CC1 signal channel, and the charging state signal occupies the CC2 signal channel, so as to supply the power management module 340 to perform charging state judgment and control.

[0193] In the normal mode signal, the CC1 / 2 signal will not be output, and therefore will not affect the signal state logic in the original design; in the mode switching to the common mode, the CC signal is output and occupies the CC2 channel. Since an OR gate is used in the front end, as long as the Type-c is connected, no matter which direction, the power management module 340 will judge that the Type-c has been connected, and the reverse charging function is realized. Since the CC1 and CC2 are mainly used to judge the Type-c direction and determine the data transmission channel, only charging is needed, and the direction judgment is not needed, and it also conforms to the USB Type-c protocol.

[0194] For example, the charging mode switching is controlled by an external key signal. Since the key signal is a low-level pulse trigger, it will not always maintain a low-level state, and the switching logic adopts a sequential rotation mode, that is, the normal mode by default, the common mode under pressing an odd number, and the normal mode under pressing an even number. According to the different modes, different mode signal level states are output.

[0195] The conference machine provided by the embodiments of the present application switches to the normal mode according to the charging mode switching signal, judges the Type-c insertion state according to the CC1 / CC2 state, and confirms whether to open the reverse charging function; when switching to the shared mode, judges whether the external HDMI device is inserted according to the HPD signal, judges whether the Type-c is inserted according to the CC1 / 2 signal, and confirms whether to open the reverse charging. Since this mode will not switch to the full-featured Type-c mode, the judgment of this situation is not considered.

[0196] In a third aspect, the embodiments of the present application provide an office equipment, Figure 8 The schematic structural block diagram of the office equipment provided by the embodiments of the present application is shown in FIG. 1. As shown in FIG. 1, the office equipment includes the conference machine 1000 as described in the first aspect. Figure 8

[0197] In some examples, the office equipment can further include a computer host, which is in communication connection with the first multi-channel signal selection board of the conference machine through the input signal external port. The computer host can serve as an external input device of the conference machine. For example, the computer host can include a notebook computer, a tablet computer, or the like.

[0198] In some examples, the office equipment can further include a secondary screen display, which is in communication connection with the system board of the conference machine through the output signal external port. The secondary screen display can serve as an external output device of the conference machine.

[0199] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0200] Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, the present application can be in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can be in the form of a computer program product implemented on one or more computer readable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) containing computer readable program code.

[0201] ​The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart Figure 1 one or more flows and / or blocks. Figure 1 one or more flows and / or blocks.

[0202] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart Figure 1 one or more flows and / or blocks. Figure 1 one or more flows and / or blocks.

[0203] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart Figure 1 one or more flows and / or blocks. Figure 1 one or more flows and / or blocks.

[0204] The computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart

[0205] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that the computer can store or be integrated into a data storage device such as a server, data center, etc. containing one or more available media. The available media can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)) and the like.

[0206] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0207] In several embodiments provided in the present application, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the apparatus embodiments described above are only schematic. The division of the units is only a logical function division. In actual implementation, additional division can be made, for example, a plurality of units or components can be combined or integrated into another system, or some features can be omitted or not executed. In addition, the coupling or direct coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0208] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0209] In addition, each of the function units in each of the embodiments of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software function unit.

[0210] When the integrated unit is realized in the form of a software function unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, essentially or in other words, the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods in each of the embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0211] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

[0212] Although the preferred embodiments of the present specification have been described, those skilled in the art can make additional changes and modifications to the embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present specification.

[0213] Obviously, those skilled in the art can make various modifications and variations to the present specification without departing from the spirit and scope of the present specification. Thus, if these modifications and variations of the present specification fall within the scope of the claims of the present specification and their equivalent technologies, the present specification also intends to include these modifications and variations.

Claims

1. A conference machine, characterized by The conference machine comprises: a display; a display driving board; a system board provided with an output signal external port; a first multi-channel signal selection board provided with an input signal external port, the first multi-channel signal selection board being electrically connected to the input end of the system board and the display driving board, respectively; a second multi-channel signal selection board being electrically connected to the output end of the system board, the display and the display driving board, respectively.

2. The conference machine according to claim 1, wherein the system board comprises a mode switching module; the mode switching module is configured to switch the working mode of the conference machine, the working mode comprising a first working mode and a second working mode; in a case where the conference machine is in the first working mode, the multimedia signal transmission channel of the first multi-channel signal selection board and the display driving board is disconnected, the multimedia signal transmission channel of the first multi-channel signal selection board and the system board is connected, the multimedia signal transmission channel of the second multi-channel signal selection board and the display driving board is disconnected, and the multimedia signal transmission channel of the second multi-channel signal selection board and the system board is connected; in a case where the conference machine is in the second working mode, the multimedia signal transmission channel of the first multi-channel signal selection board and the display driving board is connected, the multimedia signal transmission channel of the first multi-channel signal selection board and the system board is disconnected, the multimedia signal transmission channel of the second multi-channel signal selection board and the display driving board is connected, and the multimedia signal transmission channel of the second multi-channel signal selection board and the system board is disconnected.

3. The conference machine according to claim 2, wherein the input signal external port comprises an HDMI input port and a DP input port; and / or the output signal external port comprises an HDMI output port and a DP output port.

4. The conference machine of claim 3, wherein, Further comprising: an HDMI signal conversion module configured to convert the signal received by the HDMI input port into a MIPI signal; and / or a DP signal conversion module configured to convert the signal received by the DP input port into a MIPI signal.

5. The conference machine of claim 3, wherein, Further comprising: a first signal switching module provided in at least one of the system board, the first multi-channel signal selection board and the display driving board, the first signal switching module being configured to switch the signal transmission between the HDMI input channel and the DP input channel based on a first input selection instruction in a case where both the HDMI input port and the DP input port are connected to an external signal source.

6. The conference machine according to claim 3, wherein the system board comprises a camera input channel and a second signal switching module; the second signal switching module is configured to disconnect the camera input channel in the second working mode; the second signal switching module is configured to connect the camera input channel in the first working mode; or The camera input channel includes multiple, the second signal switching module is used for disconnecting one or more camera input channels based on the second input selection instruction in the first working mode, establishing one or more multimedia signal transmission channels between the system board and the first multi-channel signal selection board.

7. The conference machine of claim 1, wherein, The system board includes a power management module, a charging line interface, a control circuit, a first data switching module, a second data switching module and a charging switching module, the charging line interface is used for transmitting current and digital electrical signal, the charging line interface is electrically connected with the charging switching module, the control circuit, the first data switching module and the second data switching module respectively, the output signal external port is electrically connected with the first data switching module and the second data switching module respectively, and the power management module is electrically connected with the first data switching module; The charging line interface includes a first communication protocol detection pin, a second communication protocol detection pin and a first plug detection pin, and the charging switching module is electrically connected with the first communication protocol detection pin, the second communication protocol detection pin, the first plug detection pin and the control circuit respectively; The control circuit is used for sending a mode switching signal to the charging switching module, the mode switching signal includes a normal mode signal and a shared mode signal, and the mode switching signal is generated based on a charging mode switching instruction; The charging switching module is in a normal charging mode when receiving the normal mode, in the normal charging mode, when the charging line interface accesses an external device, a reverse charging channel of the charging line interface is turned on, and the reverse charging channel of the charging line interface includes the charging line interface, the first data switching module and the power management module connected; The charging switching module is in a shared charging mode when receiving the shared mode, in the shared charging mode, when the output signal external port accesses an external device, a transmission channel of the output signal external port is always turned on, and the transmission channel of the output signal external port includes the output signal external port, the second data switching module and the control circuit connected.

8. The conference machine of claim 7, wherein, A fast charging protocol module is connected between the first data switching module and the second data switching module; The charging switching module includes an OR gate circuit, a controllable switch, a selection switch and a triode, an output end of the first plug detection pin is electrically connected with an input end of the controllable switch, and output ends of the controllable switch are electrically connected with the first data switching module and the second data switching module respectively; The first communication protocol detection pin and the second communication protocol detection pin are connected with input ends of the OR gate circuit respectively, and the output end of the OR gate circuit and the first data switching module are connected with the selection switch. The control circuit is configured to send the mode switching signal to the controllable switch and the selection switch, the first electrode of the triode is connected with the output end of the controllable switch, the second electrode of the triode is grounded, and the third electrode of the triode is configured to access the mode switching signal; In the normal mode, the controllable switch is turned on, the selection switch is turned off, the triode is turned off, the controllable switch outputs a first detection signal, and in the case that the charging line interface accesses an external device, the reverse charging channel of the charging line interface is turned on; In the common mode, the controllable switch is turned off, the selection switch is turned on, the triode is turned on, the selection switch outputs a second detection signal, and in the case that the output signal external port accesses an external device, the transmission channel of the output signal external port is always turned on.

9. A conference machine control method characterized by, The control method is applied to the conference machine of any one of claims 1 to 8, and the control method comprises: controlling the switching of the conference machine to different working modes by controlling the multimedia signal transmission states of the first multi-channel signal selection board and the second multi-channel signal selection board by the system board respectively, and controlling the multimedia signal transmission states of the first multi-channel signal selection board and the second multi-channel signal selection board by the display driving board respectively, wherein the multimedia signal transmission state comprises a multimedia signal transmission on state and a multimedia signal transmission off state.

10. The conference machine control method according to claim 9, wherein The system board comprises a mode switching module; controlling the switching of the conference machine to different working modes comprises: obtaining a working mode switching instruction; based on the working mode switching instruction, controlling the mode switching module to switch to a first state to control the conference machine to switch to a first working mode; or based on the working mode switching instruction, controlling the mode switching module to switch to a second state to control the conference machine to switch to a second working mode; wherein in the case that the conference machine switches to the first working mode, the system board sends a first control signal to the first multi-channel signal selection board and a second control signal to the second multi-channel signal selection board; the first control signal is configured to control to disconnect the multimedia signal transmission channel between the first multi-channel signal selection board and the display driving board, and to control to establish the multimedia signal transmission channel between the first multi-channel signal selection board and the system board to be turned on; and the second control signal is configured to control to disconnect the multimedia signal transmission channel between the second multi-channel signal selection board and the display driving board, and to control to establish the multimedia signal transmission channel between the second multi-channel signal selection board and the system board to be turned on; In a case that the conference machine switches to the second working mode, the system board sends a third control signal to the first multi-path signal selection board and a fourth control signal to the second multi-path signal selection board; the third control signal is used to control to disconnect the multimedia signal transmission channel between the first multi-path signal selection board and the system board and to control to establish the multimedia signal transmission channel between the first multi-path signal selection board and the display driving board; the fourth control signal is used to control to disconnect the multimedia signal transmission channel between the second multi-path signal selection board and the system board and to control to establish the multimedia signal transmission channel between the second multi-path signal selection board and the display driving board.

11. The conference machine control method of claim 10, wherein, the input signal external port comprises an HDMI input port and a DP input port; the method further comprises: detecting whether the input signal external port is connected to an external signal source; in a case that it is detected that both the HDMI input port and the DP input port are connected to an external signal source, prompting a signal input selection information to be popped up for a user to select an external signal source input; obtaining a first input selection instruction of the user for the external signal source input; based on the first input selection instruction, switching the signal transmission of the HDMI input channel and the DP input channel.

12. The conference machine control method of claim 11, wherein, the system board comprises a camera input channel; the method further comprises: in a case that the conference machine switches to the second working mode, controlling to disconnect the camera input channel; in a case that the conference machine switches to the first working mode, controlling to connect the camera input channel; or, the camera input channel comprises a plurality of camera input channels, in a case that the conference machine is in the first working mode, based on a second input selection instruction, controlling to disconnect one or more of the camera input channels to establish one or more multimedia signal transmissions between the system board and the first multi-path signal selection board.

13. The conference machine control method of claim 11, wherein, the system board comprises a charging line interface, a control circuit, a first data switching module, a second data switching module and a charging switching module, the charging line interface comprises a first communication protocol detection pin, a second communication protocol detection pin and a first plug detection pin; the method further comprises: respectively detecting signals of the first communication protocol detection pin, the second communication protocol detection pin and the first plug detection pin; and obtaining a charging mode switching instruction; based on the charging mode switching instruction, sending a mode switching signal to the charging switching module, the mode switching signal comprises a normal mode signal or a shared mode signal; based on the signals of the first communication protocol detection pin, the second communication protocol detection pin and the first plug detection pin and the normal mode signal, generating a first detection signal; based on the first detection signal, controlling the reverse charging channel of the charging line interface to be connected in a case that the charging line interface is connected to an external device; or, Detecting signals of the first communication protocol detection pin, the second communication protocol detection pin and the first plug detection pin, and the common mode signal, to generate a second detection signal; Based on the second detection signal, controlling the transmission channel of the output signal external port to be turned on in the case that the output signal external port accesses an external device.

14. An office equipment, characterized by Comprise: The conference machine according to any one of claims 1 to 8.

15. The office equipment of claim 14, wherein, Also comprise: A computer host, which is communicatively connected to the first multi-channel signal selection board of the conference machine through an input signal external port; And / or, A secondary screen display, which is communicatively connected to the system board of the conference machine through an output signal external port.

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