Conference machine and office equipment

Abstract

The utility model discloses a conference machine 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 field of display technology, and in particular to a conference machine and office equipment. Background Art

[0002] At present, conference machines can process audio and video and communicate to achieve conference information interaction. Conference machines are widely used in office and conference occasions, and are also suitable for communication and presentation needs in leisure discussion areas. However, the functions of existing conference machines are relatively single, and the operating mode they provide is mainly conference mode, which is difficult to be compatible with the operating mode required by office. Therefore, the application scenarios of conference machines are greatly limited. Utility Model Content

[0003] The embodiments of the present application provide a conference machine and office equipment, which can increase the operation modes of the conference machine to expand the application scenarios of the conference machine.

[0004] According to a first aspect of an embodiment of the present application, a conference machine is provided, including:

[0005] monitor;

[0006] Display driver board;

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

[0008] A first multi-channel signal selection board is provided with an input signal external port, and the first multi-channel signal selection board is electrically connected to the input ends of the system board and the display driver board respectively;

[0009] The second multi-channel signal selection board is electrically connected to the output ends of the system board, the display and the display driving board respectively.

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

[0011] The mode switching module is used to switch the working mode of the conference machine, and the working mode includes 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 between the first multi-channel signal selection board and the display driver board is disconnected, the multimedia signal transmission channel between the first multi-channel signal selection board and the system board is connected, the multimedia signal transmission channel between the second multi-channel signal selection board and the display driver board is disconnected, and the multimedia signal transmission channel between the second multi-channel signal selection board and the system board is connected;

[0013] When 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 driver board is connected, the multimedia signal transmission channel between the first multi-channel signal selection board and the system board is disconnected, the multimedia signal transmission channel between the second multi-channel signal selection board and the display driver board is connected, and the multimedia signal transmission channel between the second multi-channel signal selection board and the system board is disconnected.

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

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

[0016] In some implementations, the conference machine further includes:

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

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

[0019] In some implementations, the conference machine further includes:

[0020] The first signal switching module is arranged in at least one of the system board, the first multi-channel signal selection board and the display driver board. The first signal switching module is used for switching the signal transmission between the HDMI input channel and the DP input channel based on the first input selection instruction when both the HDMI input port and the DP input port are connected to an external signal source.

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

[0022] The second signal switching module is used to disconnect the camera input channel in the second working mode;

[0023] The second signal switching module is used to switch on the camera input channel in the first working mode; or,

[0024] The camera input channels include multiple ones, and the second signal switching module is used to disconnect one or more of the 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-channel signal selection board.

[0025] In some embodiments, 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 to transmit current and digital electrical signals, the charging line interface is electrically connected to 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 to the first data switching module and the second data switching module respectively, and the power management module is electrically connected to the first data switching module;

[0026] The charging line interface includes a first communication protocol detection pin, a second communication protocol detection pin and a first plug-and-unplug detection pin, and the charging switching module is electrically connected to the first communication protocol detection pin, the second communication protocol detection pin, the first plug-and-unplug detection pin and the control circuit respectively;

[0027] The control circuit is used to send a mode switching signal to the charging switching module, wherein the mode switching signal includes 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 line interface is connected to an external device, the reverse charging channel of the charging line interface is turned on, and the reverse charging channel of the charging line interface includes the connected charging line interface, the first data switching module and the power management module;

[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 is connected to an external device, the transmission channel of the output signal external port is normally turned on, and the transmission channel of the output signal external port includes the connected output signal external port, the second data switching module and the control circuit.

[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 includes an OR gate circuit, a controllable switch, a selection switch and a transistor, the output end of the first plug detection pin is electrically connected to the input end of the controllable switch, and the output end of the controllable switch is electrically connected to 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 respectively connected to the input end of the OR gate circuit, and the selection switch is connected between the output end of the OR gate circuit and the first data switching module;

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

[0034] In the normal mode, the controllable switch is turned on, the selection switch is turned off, the transistor is turned off, the controllable switch outputs the first detection signal, and when the charging line interface is connected to an external device, the reverse charging channel of the charging line interface is turned on;

[0035] In the common mode, the controllable switch is disconnected, the selection switch is turned on, the transistor is turned on, the selection switch outputs the second detection signal, and when the output signal external port is connected to an external device, the transmission channel of the output signal external port is normally turned on.

[0036] A second aspect of the embodiment of the present application provides a conference machine control method, which is applied to the conference machine as described in the first aspect, and the control method includes:

[0037] By controlling the multimedia signal transmission status between the system board and the first multi-channel signal selection board and the second multi-channel signal selection board respectively, and controlling the multimedia signal transmission status between the display driver board and the first multi-channel signal selection board and the second multi-channel signal selection board respectively, the conference machine can be controlled to switch between different working modes, wherein the multimedia signal transmission status includes a multimedia signal transmission on state and a multimedia signal transmission off state.

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

[0039] Controlling the conference machine to switch between different working modes includes:

[0040] Get the working mode switching instruction;

[0041] Based on the working mode switching instruction, the control mode switching module switches to the first state to control the conference machine to switch to the first working mode; or,

[0042] Based on the working mode switching instruction, control the mode switching module to switch to the second state, so as to control the conference machine to switch to the second working mode;

[0043] in,

[0044] When 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 sends 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 driver board, and to control the establishment 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 driver board, and to control the establishment of the multimedia signal transmission channel between the second multi-channel signal selection board and the system board;

[0045] When the conference machine switches to the second working mode, the system board sends a third control signal to the first multi-channel signal selection board, and sends 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 to control the establishment of the multimedia signal transmission channel between the first multi-channel signal selection board and the display driver 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 to control the establishment of the multimedia signal transmission channel between the second multi-channel signal selection board and the display driver board.

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

[0047] The method further comprises:

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

[0049] When it is detected that both the HDMI input port and the DP input port are connected to external signal sources, a signal input selection prompt message is popped up to allow the user to select an external signal source input;

[0050] Obtaining a first input selection instruction input by a user for an external signal source;

[0051] Based on the first input selection instruction, signal transmission switching between the HDMI input channel and the DP input channel is performed.

[0052] In some embodiments, the system board includes a camera path;

[0053] The method further comprises:

[0054] When the conference machine is switched to the second working mode, controlling to disconnect the camera input channel;

[0055] When the conference machine is switched to the first working mode, controlling the camera input channel to be turned on; or,

[0056] The camera input channels include multiple ones. When the conference machine is in the first working mode, one or more of the camera input channels are disconnected based on the 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, and 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 comprises:

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

[0060] And, obtaining a charging mode switching instruction;

[0061] Based on the charging mode switching instruction, sending a mode switching signal to the charging switching module, the mode switching signal including a normal mode signal or a common mode signal;

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

[0063] Based on the first detection signal, controlling the reverse charging channel of the charging line interface to be turned on when the charging line interface is connected to an external device; or,

[0064] Generate a second detection signal based on signals of the first communication protocol detection pin, the second communication protocol detection pin, the first plug detection pin, and the common mode signal;

[0065] Based on the second detection signal, the transmission channel of the output signal external port is controlled to be turned on when the output signal external port is connected to an external device.

[0066] According to a third aspect of the embodiments of the present application, an office device is provided, including:

[0067] A conference machine as described in the first aspect.

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

[0069] A computer host is communicatively connected with the first multi-channel signal selection board of the conference machine via an input signal external port; and / or,

[0070] The secondary screen display is communicatively connected with the system board of the conference machine via an output signal external port.

[0071] The conference machine provided in the embodiment of the present application can realize the switching of the signal transmission status of the first multi-channel signal selection board and the second multi-channel signal selection board, and the switching of the signal transmission status of the display driver board, so that the working mode of the conference machine is switchable. By increasing the settings of the first multi-channel signal selection board, the second multi-channel signal selection board and the display driver board, the number of multimedia signal transmission channels can be increased, and different working modes corresponding to the conference machine can be obtained based on the disconnection and conduction combinations of different multimedia signal transmission channels, thereby increasing the working modes of the conference machine, so that the conference machine is not limited to the conference mode, but also compatible with the office mode. Yes, the application scenario of the conference machine can be compatible with multiple working modes such as conference and office, which can avoid the existing conference machine increasing the cost and space occupation of office equipment in order to be compatible with office. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 A schematic structural block diagram of a conference machine provided in an embodiment of the present application;

[0073] Figure 2 A schematic structural block diagram of another conference machine provided in an embodiment of the present application;

[0074] Figure 3 A schematic structural block diagram of another conference machine provided in an embodiment of the present application;

[0075] Figure 4 A schematic structural block diagram of a system board provided in an embodiment of the present application;

[0076] Figure 5 A schematic structural block diagram of another system board provided in an embodiment of the present application;

[0077] Figure 6 A schematic structural diagram of a system board provided in an embodiment of the present application;

[0078] Figure 7 A schematic structural block diagram of another system board provided in an embodiment of the present application;

[0079] Figure 8 A schematic structural block diagram of an office equipment provided in an embodiment of the present application. DETAILED DESCRIPTION

[0080] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through 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 article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0082] At present, conference machines can process audio and video and communicate to achieve conference information interaction. Conference machines are widely used in office and conference occasions, and are also suitable for communication and presentation needs in leisure discussion areas. However, the functions of existing conference machines are relatively single, and the operating mode they provide is mainly conference mode, which is difficult to be compatible with the operating mode required by office. Therefore, the application scenarios of conference machines are greatly limited.

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

[0084] In a first aspect of an embodiment of the present application, a conference machine is provided. Figure 1 This is a schematic structural block diagram of a conference machine provided in an embodiment of the present application. Figure 1 As shown, the conference machine includes a display 100, a display driver board 200, a system board 300, a first multi-channel signal selection board 400 and a second multi-channel signal selection board 500. The system board 300 is provided with an output signal external port 310, the first multi-channel signal selection board 400 is provided with an input signal external port 410, and the first multi-channel signal selection board 400 is electrically connected to the input end of the system board 300 and the display driver board 200 respectively; the second multi-channel signal selection board 500 is electrically connected to the output end 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 laptop computer, a tablet computer, and a smart phone, etc., which is not specifically limited in the embodiments of the present application. The external signal source connected to the input signal external port 410 can be used to provide display data to display a picture on the display 100. The display data provided by the external signal source can be used for the office mode requirements of the conference machine, and the conference machine can be used as a display screen or an extended display sub-screen of the external signal source.

[0086] Exemplarily, the output signal external port 310 can be used to connect to other displays, computers, smart phones, etc. The data output from the output signal external port 310 can be used to display images on other displays, etc. The other displays can be used as extended display sub-screens of the conference machine.

[0087] Exemplarily, the display driver 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 driver board 200 comes from the multimedia signal received by the input signal external port 410 .

[0088] It should be noted that the multimedia signal may 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. The system board 300 can provide the audio and video data obtained 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 ports 310 shown is two, and the number of the input signal external ports 410 is two. Figure 1 It is only for illustration and is not intended to be a specific limitation of this application.

[0091] It should be noted that the conference machine provided in the embodiment of the present application includes a first multi-channel signal selection board 400 and a second multi-channel signal selection board 500. According to the requirements of the application scenario mode of the conference machine, the conference machine can also include more multi-channel signal selection boards. The more multi-channel signal selection boards there are, the more working modes of the conference machine. The embodiment of the present application does not specifically limit the number of multi-channel signal selection boards in the conference machine.

[0092] In some examples, the multimedia signal transmission status between the system board 300 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 is controlled respectively, and the multimedia signal transmission status between the display driver board 200 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 is controlled respectively to control the conference machine to switch between different working modes, wherein the multimedia signal transmission status includes multimedia signal transmission on and multimedia signal transmission off.

[0093] In some examples, when the multimedia signal transmission states of the system board 300 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 are all in the on state, and the multimedia signal transmission of the display driver board 200 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 are disconnected, 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 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 signal transmitted by the system board 300 to the display 100 through the second multi-channel signal selection board 500 can be an external signal source received through the input signal external port 410, or it can be a multimedia signal obtained by the conference machine's own camera. In the conference mode, the display driver board 200 is not connected to the multimedia signal transmission path.

[0094] In some examples, the conference machine can operate in office mode when the multimedia signal transmission status of the system board 300 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 are disconnected, and the multimedia signal transmission of the display driver board 200 to the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 is connected. In office mode, the first multi-channel signal selection board 400 transmits the multimedia signal of the external signal source received through the input signal external port 410 to the display driver board 200, and the display driver 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 transmits the multimedia signal to the display 100, so as 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 works in office mode and conference mode, the signal connections other than multimedia signals between the system board 300 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 can remain connected, and other signals may include interactive command signals, etc. In office mode, although the multimedia signal transmission status 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 a disconnected state, the command signal interaction between the system board 300 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 can proceed normally. The on and off of the multimedia signal transmission between the system board 300 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 respectively and the on and off of the transmission of other signals do not affect each other, and the multimedia signal transmission on the system board 300 and the transmission of other signals are independent of each other.

[0096] For example, Figure 2 This is a schematic structural block diagram of another conference machine provided in an embodiment of the present application. Figure 2 As shown, a conference machine generally includes a display screen, a T-con board and a system board. The system board is provided with an HDMI IN external port and an HDMI OUT external port. The HDMI IN external port is used to access an external signal source, and the HDMI OUT external port is used to transmit signals to an external device. HDMI (High Definition Multimedia Interface) is a fully digital video and sound transmission interface that can send uncompressed audio and video signals. The system board and the T-con board transmit audio and video signals through the 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 signal of the display screen. The signal transmission channel of the conference machine has only one HDMI input and two HDMI outputs, namely, one HDMI IN external port and two HDMI OUT external ports. The conference machine only supports conference mode, and the conference machine can only be used in conference scenarios. The conference machine usually has its own camera, and the input signal is processed according to the camera mode. It can only support fixed parameter input, and cannot support multiple formats of input video sources like office monitors. In addition, as a desktop conference machine, in order to achieve office and conference compatible scenarios, it is necessary to connect a separate office monitor, which increases the office desktop occupancy and office budget. The application scenarios of conference machines that only support conference mode are too simple, which will reduce the frequency and necessity of use.

[0097] The conference machine provided in the embodiment of the present application can realize the switching of the signal transmission status of the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500, and the switching of the signal transmission status of the display driver board 200, so that the working mode of the conference machine is switchable. By increasing the settings of the first multi-channel signal selection board 400, the second multi-channel signal selection board 500 and the display driver board 200, the number of multimedia signal transmission channels can be increased, and different working modes corresponding to the conference machine can be obtained based on the disconnection and conduction combinations of different multimedia signal transmission channels, thereby increasing the working modes of the conference machine, so that the conference machine is not limited to the conference mode, but also compatible with the office mode. Yes, the application scenario of the conference machine can be compatible with multiple working modes such as conference and office, which can avoid the existing conference machine increasing the cost and space occupation of office equipment in order to be compatible with office.

[0098] In some embodiments, the system board 300 includes a mode switching module; the mode switching module is used to control the working mode switching of the conference machine, and the working mode includes a first working mode and a second working mode. When the conference machine is in the first working mode, the multimedia signal transmission channel between the first multi-channel signal selection board 400 and the display driver board 200 is disconnected, the multimedia signal transmission channel between the first multi-channel signal selection board 400 and the system board 300 is connected, the multimedia signal transmission channel between the second multi-channel signal selection board 500 and the display driver board 200 is disconnected, and the multimedia signal transmission channel between 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 of the conference machine acquired by the system board 300 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 used as the conference mode application scenario of the conference machine. The display driver board 200 can be used to process the data signal used by the office of the external signal source to meet the needs of the office scene. In the first working mode, the display driver 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 driver board 200 is connected, the multimedia signal transmission channel between the first multi-channel signal selection board 400 and the system board 300 is disconnected, the multimedia signal transmission channel between the second multi-channel signal selection board 500 and the display driver board 200 is connected, and the multimedia signal transmission channel between the second multi-channel signal selection board 500 and the system board 300 is disconnected. In the second working mode, the multimedia signal of the external signal source can be transmitted to the display driver board 200 through the first multi-channel signal selection board 400, the display driver 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 of the system board 300 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 are all disconnected, so as to isolate the multimedia signal transmission of the conference machine's built-in camera and the channel for transmitting multimedia signals to external devices, thereby realizing the office mode scenario requirements, that is, disabling the camera function and disabling the function of transmitting data to external devices in the office mode, thereby ensuring the confidentiality and security of data during the office process.

[0100] Exemplarily, 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 embodiment of the present application does not specifically limit the structure and type of the mode switching module. The pulse trigger can generate different pulse signals corresponding to different trigger forms, such as low-level pulse signals and high-level pulse signals, etc., and different pulse signal correspondences can be set according to the mode type of the mode switching mode. The electrically controlled switch circuit can be touch signal controlled or remote control switch controlled, etc., which is not specifically limited in the embodiment of the present application.

[0101] Exemplarily, the mode switching module may include a first state and a second state. For example, the pressed state of the mode switching module in the key structure corresponds to the first state, and the key pop-up state corresponds to the second state. The first state may correspond to a low-level pulse trigger, and the second state may correspond to a high-level pulse trigger. When the mode switching module is switched to the first state, the system board 300 may send a first control signal to the first multi-channel signal selection board 400, and send 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 driver board 200, and control 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 driver board 200, and control 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 may correspond to the first working mode of the conference machine.

[0102] Exemplarily, when the mode switching module is switched to the second state, the system board 300 may send a third control signal to the first multi-channel signal selection board 400, and send 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 control the connection of the multimedia signal transmission channel between the first multi-channel signal selection board 400 and the display driver 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 control the connection of the multimedia signal transmission channel between the second multi-channel signal selection board 500 and the display driver board 200. The second state of the mode switching module may correspond to the second working mode of the conference machine.

[0103] Exemplarily, no matter in the first working mode or the second working mode, the transmission channels of the control signals between the system board 300 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 are both conductive.

[0104] Exemplarily, the disconnection and connection of the transmission channel of the multimedia signal may be achieved by turning on and off a switch circuit, and the switch circuit may include a transistor or other forms of switch devices.

[0105] It should be noted that the system board 300 may also be provided with a control module for signal interaction, which is used to realize command 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 the external device and the conference machine. The first multi-channel signal selection board 400 may be provided with a signal transmission module for human-machine interaction, so as to realize signal interaction between the external device and the conference machine.

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

[0107] For example, Figure 3 This is a schematic structural block diagram of another conference machine provided in an embodiment of the present application. Figure 3 As shown, the conference machine may further include: a timing control board 600, which is 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] refer to Figure 3 , multimedia signals are transmitted between the system board 300 and the first multi-channel signal selection board 400 through the first HDMI interface HDMIIN 1 and the first DP interface DP IN 1, and multimedia signals are transmitted between the first multi-channel signal selection board 400 and the display driver board 200 through the second HDMI interface HDMIIN 2 and the second DP interface DP IN 2. Multimedia signals are transmitted between the system board 300 and the second multi-channel signal selection board 500 through the first eDP interface eDP1, and multimedia signals are transmitted between the display driver board 200 and the second multi-channel signal selection board 500 through the second eDP interface eDP2, and multimedia signals are transmitted between the second multi-channel signal selection board 500 and the timing control board 600 through the eDP interface. The system board 300 sends control signals to the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 through separate channels.

[0109] It should be noted that the direction of the arrows in the drawings of the embodiments of the present application is only an example and is not intended to be a specific limitation in the embodiments of the present application.

[0110] It should be noted that usually conference machines only have one mode, namely conference mode, which supports one HDMI input and two HDMI outputs. However, due to the processing method of the existing system control chip, it processes the input signal according to the camera mode and can only support fixed parameter input. It cannot support multiple formats of input video sources like office monitors.

[0111] The conference machine provided in the embodiment of the present application adds a DP input port DP IN, which can match more video source devices, that is, it 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 path for the input HDMI and DP signals, and the second multi-channel signal selection board 500 can select the input path for the eDP signal. A new display driver board 200 is added, which can be used for display signal conversion and processing in office mode. A new mode switching module is added, which can be used to realize the switching between the conference mode and the office mode of the conference machine. There is only one HDMIIN and DP IN port for connecting to the external signal source. When switching the working mode, the user does not have to plug and unplug the cable, which is convenient for users.

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

[0113] In some implementations, the conference machine further includes a DP signal conversion module, and the DP signal conversion module is used to convert a signal received by the DP input port into a MIPI signal.

[0114] Exemplarily, the system board 300 and the display driver board 200 may both include an HDMI signal conversion module and a DP signal conversion module.

[0115] For example, Figure 4 The following is a schematic structural block diagram of a system board provided in an embodiment of the present application. Figure 4As shown, the conference machine supports two camera inputs and one HDMI signal input. The inputs of the two cameras correspond to Camera0 and Camera1, respectively, and correspond to two MIPI signal paths, namely MIPI (CSI0) and MIPI (CSI1). The system board may include a control circuit 330. Exemplarily, the control circuit 330 may include an SOC (system control chip). For example, the SOC may use a chip of the QCS8250 model. Since the SOC does not support the input of the display signal, it only supports the mode of video signal acquisition by the camera, and the video signal is converted to a decodable SOC through the built-in ISP (image signal processing). Therefore, the conference machine is designed with a signal conversion circuit, namely HDMI to MIPI (CSI), which is the abbreviation of CSI channel state information. HDMI to MIPI (CSI) can convert HDMI signals into MIPI signals (CSI mode), simulated into cameras, and obtain two MIPI paths, namely MIPI (CSI2) and MIPI (CSI3), so that it can be recognized and decoded by the built-in ISP module of the SOC to realize the recognition of the input video signal.

[0116] For example, since one MIPI signal interface can only support up to 4K@30fps video capture, a single interface cannot meet the display requirements of 4K@60hz. The current conference machine uses a 4K@60Hz display, which needs to occupy two MIPI channels. In this case, one HDMI channel is equivalent to two cameras, occupying two ISP channels, and the currently used SOC can only support two ISPs for decoding and video processing at the same time, resulting in a conflict between the use of HDMI input and the camera, and they are not compatible with each other, that is, the channel for inputting HDMI signals and the camera input cannot be used at the same time.

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

[0118] Exemplarily, the camera input channel can be a data channel formed by the connection of the camera and the corresponding circuits and devices for data processing and transmission. The multimedia signal transmission channel is also an overall path including ports, lines, circuits and devices.

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

[0120] Exemplarily, the second signal switching module DATA Switch3 is used to disconnect the camera input channel in the second operating mode, that is, to disconnect MIPI (CSI0) and MIPI (CSI1); the second signal switching module DATA Switch3 is used to connect the camera input channel in the first operating mode, that is, to connect MIPI (CSI0) and MIPI (CSI1).

[0121] Exemplarily, the camera input channels include multiple ones, 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-channel signal selection board. The multimedia signal transmission channel may include a video input path. For example, in the first working mode, the control circuit 330 may 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 (CSI2) and MIPI (CSI3) corresponding to MIPI 0 / 1 and MIPI 2 / 3, respectively, to be turned on.

[0122] Exemplarily, the second input selection instruction may be a selection instruction issued by a user, or may be a different input mode corresponding to a working mode of the conference machine, which is not specifically limited in the embodiments of the present application.

[0123] For example, the SOC judges the conference mode and office mode. When in conference mode, the camera channel is turned on and the video input channel is turned off. 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 conference machine does not process the HDMI or DP signal; if it is judged to be in office mode, the video input channel is turned on and the camera is turned off. All operations to turn on the camera are unresponsive, and the display shows "Currently in office mode, camera disabled" to remind the user.

[0124] In the case where the conference mode requires video input display, the user chooses to turn off a camera, thereby releasing a MIPI channel to achieve a maximum 4K@30Hz video input. In this case, the SOC selects the input channel according to the HDMI to MIPI and DP to MIPI chip output channels, and displays it on the display screen as a supplement to the conference.

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

[0127] In some implementations, the conference machine further includes a first signal switching module, and the first signal switching module can be disposed in at least one of the system board 300 , the first multi-channel signal selection board 400 , and the display driver board 200 .

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

[0129] For example, the system board control logic adds a new working mode switching control judgment. The mode switching is controlled by an external key signal. Since the key signal is triggered by a low-level pulse, it will not always maintain a low-level state. The switching logic adopts a sequential rotation method. The default meeting mode is to press an odd number to enter the office mode. In the office mode, the system board turns off the video processing unit and does not support the HDMIOUT function; press an even number to enter the meeting mode. In the meeting mode, the system board processes the video signal and supports the HDMIOUT function. Different display channels are selected according to different modes.

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

[0131] The conference machine provided in the embodiment of the present application expands the working mode of the conference machine, solves the display specification limitation caused by the input video format parsing based on the camera mode, and can support more display specifications in the office mode, making it convenient to access different signal sources for office work. Exemplarily, the display specifications may include parameter specifications such as resolution and refresh rate. The display input ports in conference mode are retained, and the DP IN port is expanded to ensure that the switching of video sources can still be supported in conference mode, and external video source information can be shared.

[0132] In some embodiments, the system board 300 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 is used to transmit current and digital electrical signals. The charging line interface is electrically connected to 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 to the first data switching module and the second data switching module respectively; the charging line interface includes a first communication protocol detection pin, a second communication protocol detection pin and a first plug-in detection pin, and the charging switching module is electrically connected to the first communication protocol detection pin, the second communication protocol detection pin, the first plug-in detection pin and the control circuit respectively. The control circuit is used to send a mode switching signal to the charging switching module, and the mode switching signal includes a normal mode signal and a common mode signal; the mode switching signal is generated based on a charging mode switching instruction, and the charging mode switching instruction may correspond to the 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 the reverse charging channel of the charging line interface is turned on under the control of the first detection signal when the charging line interface is connected to an external device; the charging switching module outputs a second detection signal under the control of the common mode signal, and the transmission channel of the output signal external port is always turned on under the control of the second detection signal when the output signal external port is connected to an external device. The charging switching module is in the normal charging mode when receiving the normal mode. In the normal charging mode, when the charging line interface is connected to an external device, the reverse charging channel of the charging line interface is turned on, and the reverse charging channel of the charging line interface includes the connected charging line interface, the first data switching module, and the power management module. The charging switching module is in the common charging mode when receiving the common mode. In the common charging mode, when the output signal external port is connected to an external device, the transmission channel of the output signal external port is always turned on, and the transmission channel of the output signal external port includes the connected output signal external port, the second data switching module, and the control circuit.

[0133] It should be noted that the external device connected to the charging cable interface can be a mobile phone, a tablet computer, a smart watch, etc., and the embodiments of the present application do not make specific limitations.

[0134] For example, the normal mode signal can make the reverse charging priority of the charging line interface higher than the conduction of the multimedia signal transmission channel of the output signal port. In the common 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 charging line interface connecting to an external device.

[0135] For example, Figure 6 A schematic structural diagram of a system board provided in an embodiment of the present application, such as 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 line 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 line interface can adopt a Type-c interface, and the power management module 340 can adopt a power management chip.

[0136] For example, Figure 6 As shown, Type-c Power is used to indicate the power signal, CC1 / CC2 is used to indicate the plug detection signal, CC1 and CC2 correspond to the signals of positive plug and reverse plug respectively, SBU1 and SBU2 are used to indicate the headphone signal, Type-c SSTX / RX1 and Type-c SS TX / RX2 are used to indicate the data signal of USB3.1, USB DM / DP is used to indicate the data signal of USB2.0, Type-c DET is used to indicate the plug detection signal, the plug detection signal of CC1 / CC2 is used to provide to the power management module 340, and the plug detection signal of Type-cDET is used to provide to the first data switching module Data Switch1 and the second data switching module Data Switch2. HDMIDATA / CLK is used to indicate the data clock signal, DDC is used to indicate the digital signal, and HDP is used to indicate 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 indicates the DDC channel.

[0137] For example, 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, the first plug detection pin can be used to transmit the Type-c DET signal. The HPD signal can be transmitted through the second plug detection signal.

[0138] The conference machine supports two HDMI outputs, but the output shares the data path of type-c. Although it does not occupy the USB signal path or the CC detection port, it can theoretically realize the simultaneous application of USB2.0 and HDMI OUT. However, in actual application, when the Type-c cable is inserted, the mode is automatically switched (Type-c has a higher priority than HDMIOUT), and the HDMIOUT output is cut off. If you want HDMIOUT output, you cannot connect type-c, which leads to the inability to charge external devices such as mobile phones at the same time when multiple screens are displayed. For those who do not have wireless charging or are limited by the wireless charging power and want to charge quickly, they can only choose to find a charger separately. Due to the actual application, the multi-screen linkage display design of the conference machine supports 1 HDMIIN input and 2 HDMIOUT outputs. It is hoped that the ordinary display or the other two conference machines can realize two or three screen linkage through the HDMI interface. While holding a meeting, the PPT content is displayed on one sub-screen, and the other sub-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 and unplug the cable, resulting in a great limitation of the fast charging function of the conference machine.

[0139] Exemplary, reference Figure 6 When it is detected that Type-c is not connected to an external device, the pin signal corresponding to Type-c DET is pulled high; when it is detected that Type-c is connected to an external device, the pin signal corresponding to Type-c DET is pulled low. Therefore, inserting an external device cable will inevitably cut off the signals of HDMIOUT1 and HDMIOUT2 ​​and convert them to Type-c mode; if no external device cable is inserted, it will convert to HDMIOUT mode. 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 achieved at the same time.

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

[0141]

[0142] Table 1

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

[0144] In order to solve this problem, it is necessary to distinguish the Type-c DET and CC1 / CC2 status signals to disconnect the associated states between the above states, so as to achieve the simultaneous use of Type-c charging and HDMI OUT functions.

[0145] In some embodiments, Figure 7 This is a schematic structural block diagram of another system board provided in an embodiment of the present application. Figure 7 As shown, in the conference machine provided in the embodiment of the present application, the power management module 340 is electrically connected to the first data switching module DataSwitch1, and a fast charging protocol module PD Controller is connected between the first data switching module Data Switch1 and the second data switching module Data Switch2. The charging switching module includes an OR gate circuit, a controllable switch, a selection switch and a transistor Q1, the output end of the first plug detection pin is electrically connected to the input end of the controllable switch, and the output end of the controllable switch is electrically connected to the first data switching module Data Switch1 and the second data switching module Data Switch2 respectively.

[0146] refer to Figure 7The first communication protocol detection pin and the second communication protocol detection pin are respectively connected to the input end of the OR gate circuit, and a selection switch is connected between the output end of the OR gate circuit and the first data switching module. 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 is connected in series with the selection switch, and the common mode charging signal (CC2) 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 transistor Q1 is connected to the output end of the controllable switch, the second electrode of the transistor Q1 is grounded, and the third electrode of the transistor 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 transistor Q1 to be turned off, that is, when the control circuit 330 sends a 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 transistor 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, and the selection switch has no signal output. The first detection signal controls the switching between the DP out Data2 and the Type-c signal of the first data switching module Data Switch1 and the second data switching module Data Switch2, so as to realize the transmission channel conduction selection of the external port of the input signal, that is, there is no external device connected to the Type-c port, between HDMIOUT1 and HDMI When OUT1 is connected to an external device, the corresponding signal transmission channels of HDMIOUT1 and HDMIOUT1 are turned on under the control of the first detection signal; the Type-c port counts the external device, and under the control of the first detection signal, regardless of whether HDMIOUT1 and HDMIOUT1 are connected to an external device, they will switch to the Type-c port conduction mode and disconnect HDMIOUT1 and HDMIOUT1.

[0147] refer to Figure 7, the common mode signal can be used to control the disconnection of the controllable switch, the conduction of the selection switch and the conduction of the transistor Q1. Then the detection signal output by the controllable switch is pulled down by Q1 grounding, and the selection switch can output the common mode charging (CC2) signal, that is, the second detection signal. When Type-c is connected to an external device, the power management module 340 can output a reverse charging signal to reversely charge the external device. In addition, since the output signal potential of the controllable switch is pulled down, regardless of whether Type-c is connected to an external device, the conduction of the transmission channel of the output signal external port can be unaffected. When the output signal external port is connected to an external device, it can be always turned on, that is, the first data switching module Data Switch1 can also force HDMIOUT to be always valid, 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 change of Type-c DET and becomes a normally low state. Regardless of whether Type-c is inserted or not, it is DP OUT mode (MSTHUB is converted to HDMIOUT signal).

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

[0149] It should be noted that CC1 and CC2 are connected in parallel into an OR gate circuit. No matter whether CC1 or CC2 detects a signal in the Type-c interface, that is, whether the Type-c interface line is connected forward or reverse, the signal output can be controlled by selecting the switch circuit. 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 output end of the selection switch, 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] like Figure 7 The key signal may 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 switching the charging mode and the key for switching the working mode of the conference machine may be different keys set independently.

[0152] In the normal mode, the controllable switch is turned on, the selection switch is turned off, the transistor is turned off, the controllable switch outputs the first detection signal, and when the charging line interface is connected to 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 transistor is turned on, the selection switch outputs the second detection signal, and when the output signal external port is connected to an external device, the transmission channel of the output signal external port is normally turned on.

[0153] The conference machine provided in the embodiment of the present application adds a mode switching signal in the system board 300 to control the status of the Type-cDET detection signal and the detection signals of CC1 and CC2, ensuring that the HDMIOUT output is maintained normally when switching to the common mode, and Type-c reverse charging can be performed at the same time. In the HDMIOUT display state, the HPD signal occupies the CC1 signal channel, and the charging status signal occupies the CC2 signal channel, so that the power management module 340 can judge and control the charging status.

[0154] In normal mode, CC1 / 2 signals will not be output, so it will not affect the signal state logic in the original design; when the mode is switched to common mode, CC signals are output, occupying CC2 channel. Since the front end uses an OR gate, as long as Type-c is connected, no matter which direction, the power management module 340 will determine that Type-c has been connected, and realize the reverse charging function. Since CC1 and CC2 are mainly used to determine the direction of Type-c and determine the data transmission channel, and only charging, direction judgment is not required, which also complies with the USB Type-c protocol.

[0155] For example, the charging mode switching is controlled by an external key signal. Since the key signal is triggered by a low-level pulse, it will not always maintain a low-level state. The switching logic adopts a sequential rotation method. The default normal mode is to enter the common mode by pressing an odd number and to enter the normal mode by pressing an even number. Different mode signal level states are output according to different modes.

[0156] The conference machine provided in the embodiment of the present application switches the signal according to the charging mode. When switched to the normal mode, the Type-c insertion status is judged according to the CC1 / CC2 status to confirm whether the reverse charging function is turned on; when switched to the shared mode, whether the external HDMI device is inserted is judged according to the HPD signal, and whether the Type-c is inserted is judged according to the CC1 / 2 signal to confirm whether the reverse charging is turned on. Since this mode will not switch to the full-function Type-c mode, the judgment of this situation is not considered.

[0157] The conference machine provided in the embodiment of the present application optimizes the Type-c cable insertion detection and CC1 / CC2 direction detection, retains the original detection function, and adds a shared mode detection function, so that when Type-c3.1 data is used for extended display, the reverse charging function can still be recognized and detected. The firmware function of the power management module is optimized, and the shared mode charging detection judgment is added to recognize the switch to the shared mode, so that the reverse charging function can still be activated even if the extended display is in use.

[0158] A second aspect of the embodiment of the present application provides a conference machine control method, which is applied to the conference machine as described in the first aspect, and the control method includes:

[0159] By controlling the multimedia signal transmission status between the system board and the first multi-channel signal selection board and the second multi-channel signal selection board respectively, and controlling the multimedia signal transmission status between the display driver board and the first multi-channel signal selection board and the second multi-channel signal selection board respectively, the conference machine can be controlled to switch between different working modes, wherein the multimedia signal transmission status includes a multimedia signal transmission on state and a multimedia signal transmission off state.

[0160] In some examples, when the multimedia signal transmission states of the system board 300 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 are all in the on state, and the multimedia signal transmission of the display driver board 200 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 are disconnected, 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 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 signal transmitted by the system board 300 to the display 100 through the second multi-channel signal selection board 500 can be an external signal source received through the input signal external port 410, or it can be a multimedia signal obtained by the conference machine's own camera. In the conference mode, the display driver board 200 is not connected to the multimedia signal transmission path.

[0161] In some examples, the conference machine can operate in office mode when the multimedia signal transmission status of the system board 300 and the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 are disconnected, and the multimedia signal transmission of the display driver board 200 to the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500 is connected. In office mode, the first multi-channel signal selection board 400 transmits the multimedia signal of the external signal source received through the input signal external port 410 to the display driver board 200, and the display driver 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 transmits the multimedia signal to the display 100, so as to display and play the audio and video signals provided by the external signal source on the display 100.

[0162] The conference machine provided in the embodiment of the present application can realize the switching of the signal transmission status of the first multi-channel signal selection board 400 and the second multi-channel signal selection board 500, and the switching of the signal transmission status of the display driver board 200, so that the working mode of the conference machine is switchable. By increasing the settings of the first multi-channel signal selection board 400, the second multi-channel signal selection board 500 and the display driver board 200, the number of multimedia signal transmission channels can be increased, and different working modes corresponding to the conference machine can be obtained based on the disconnection and conduction combinations of different multimedia signal transmission channels, thereby increasing the working modes of the conference machine, so that the conference machine is not limited to the conference mode, but also compatible with the office mode. Yes, the application scenario of the conference machine can be compatible with multiple working modes such as conference and office, which can avoid the existing conference machine increasing the cost and space occupation of office equipment in order to be compatible with office.

[0163] In some implementations, the system board includes a mode switching module; controlling the conference machine to switch between different working modes may include:

[0164] Get the working mode switching instruction.

[0165] Exemplarily, the working mode switching instruction may come from a key state switch of the mode switching module.

[0166] Based on the working mode switching instruction, the control mode switching module switches 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 control mode switching module switches to the second state to control the conference machine to switch to the second working mode.

[0168] Exemplarily, the mode switching module may include a first state and a second state. For example, the pressed state of the mode switching module in the key structure corresponds to the first state, and the key pop-up state corresponds to the second state. The first state may correspond to a low-level pulse trigger, and the second state may correspond to a high-level pulse trigger. When the mode switching module is switched to the first state, the system board 300 may send a first control signal to the first multi-channel signal selection board 400, and send 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 driver board 200, and control 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 driver board 200, and control 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 may correspond to the first working mode of the conference machine.

[0169] When 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 sends 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 driver board, and to control the establishment 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 driver board, and to control the establishment of the multimedia signal transmission channel between the second multi-channel signal selection board and the system board.

[0170] When the conference machine switches to the second working mode, the system board sends a third control signal to the first multi-channel signal selection board, and sends 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 to control the establishment of the multimedia signal transmission channel between the first multi-channel signal selection board and the display driver 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 to control the establishment of the multimedia signal transmission channel between the second multi-channel signal selection board and the display driver board.

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

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

[0173] When it is detected that both the HDMI input port and the DP input port are connected to external signal sources, a signal input selection prompt message pops up for the user to select the external signal source input.

[0174] A first input selection instruction input by a user for an external signal source is obtained.

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

[0176] Exemplarily, in both the conference mode and the office mode, a signal input selection prompt message may pop up.

[0177] In some embodiments, the system board includes a camera path; and the control method further includes:

[0178] When the conference machine is switched to the second working mode, the camera input channel is disconnected;

[0179] When the conference machine is switched to the first working mode, controlling the camera input channel to be turned on; or,

[0180] There are multiple camera input channels. When the conference machine is switched to the first working mode, one or more camera input channels are disconnected based on the 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 includes a charging line interface, a control circuit, a first data switching module, a second data switching module and a charging switching module, wherein the charging line interface includes a first communication protocol detection pin, a second communication protocol detection pin and a first plug detection pin; the control method further includes:

[0182] Respectively detect signals of the first communication protocol detection pin, the second communication protocol detection pin and the first plug and unplug detection pin;

[0183] and, obtaining a charging mode switching instruction;

[0184] Based on the charging mode switching instruction, sending a mode switching signal to the charging switching module, the mode switching signal including a normal mode signal or a common mode signal;

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

[0186] Based on the first detection signal, controlling the reverse charging channel of the charging line interface to be turned on when the charging line interface is connected to an external device; or,

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

[0188] Based on the second detection signal, the transmission channel of the output signal external port is controlled to be turned on when the output signal external port is connected to an external device.

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

[0190] refer to Figure 7 The first communication protocol detection pin and the second communication protocol detection pin are respectively connected to the input end of the OR gate circuit, and a selection switch is connected between the output end of the OR gate circuit and the first data switching module. 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 is connected in series with the selection switch, and the common mode charging signal (CC2) 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 transistor Q1 is connected to the output end of the controllable switch, the second electrode of the transistor Q1 is grounded, and the third electrode of the transistor 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 transistor Q1 to be turned off, that is, when the control circuit 330 sends a 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 transistor 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, and the selection switch has no signal output. The first detection signal controls the switching between the DP out Data2 and the Type-c signal of the first data switching module Data Switch1 and the second data switching module Data Switch2, so as to realize the transmission channel conduction selection of the external port of the input signal, that is, there is no external device connected to the Type-c port, between HDMIOUT1 and HDMI When OUT1 is connected to an external device, the corresponding signal transmission channels of HDMIOUT1 and HDMIOUT1 are turned on under the control of the first detection signal; the Type-c port counts the external device, and under the control of the first detection signal, regardless of whether HDMIOUT1 and HDMIOUT1 are connected to an external device, they will switch to the Type-c port conduction mode and disconnect HDMIOUT1 and HDMIOUT1.

[0191] refer to Figure 7, the common mode signal can be used to control the disconnection of the controllable switch, the conduction of the selection switch and the conduction of the transistor Q1. Then the detection signal output by the controllable switch is pulled down by Q1 grounding, and the selection switch can output the common mode charging (CC2) signal, that is, the second detection signal. When Type-c is connected to an external device, the power management module 340 can output a reverse charging signal to reversely charge the external device. In addition, since the output signal potential of the controllable switch is pulled down, regardless of whether Type-c is connected to an external device, the conduction of the transmission channel of the output signal external port can be unaffected. When the output signal external port is connected to an external device, it can be always turned on, that is, the first data switching module Data Switch1 can also force HDMIOUT to be always valid, 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 change of Type-c DET and becomes a normally low state. Regardless of whether Type-c is inserted or not, it is DPOUT mode (MSTHUB is converted to HDMIOUT signal).

[0192] The conference machine provided in the embodiment of the present application adds a mode switching signal in the system board 300 to control the status of the Type-cDET detection signal and the detection signals of CC1 and CC2, ensuring that the HDMIOUT output is maintained normally when switching to the common mode, and Type-c reverse charging can be performed at the same time. In the HDMIOUT display state, the HPD signal occupies the CC1 signal channel, and the charging status signal occupies the CC2 signal channel, so that the power management module 340 can judge and control the charging status.

[0193] In normal mode, CC1 / 2 signals will not be output, so it will not affect the signal state logic in the original design; when the mode is switched to common mode, CC signals are output, occupying CC2 channel. Since the front end uses an OR gate, as long as Type-c is connected, no matter which direction, the power management module 340 will determine that Type-c has been connected, and realize the reverse charging function. Since CC1 and CC2 are mainly used to determine the direction of Type-c and determine the data transmission channel, and only charging, direction judgment is not required, which also complies with the USB Type-c protocol.

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

[0195] The conference machine provided in the embodiment of the present application switches the signal according to the charging mode. When switched to the normal mode, the Type-c insertion status is judged according to the CC1 / CC2 status to confirm whether the reverse charging function is turned on; when switched to the shared mode, whether the external HDMI device is inserted is judged according to the HPD signal, and whether the Type-c is inserted is judged according to the CC1 / 2 signal to confirm whether the reverse charging is turned on. Since this mode will not switch to the full-function Type-c mode, the judgment of this situation is not considered.

[0196] According to a third aspect of the embodiments of the present application, an office device is provided. Figure 8 This is a schematic structural block diagram of an office device provided in an embodiment of the present application. Figure 8 As shown, the office equipment includes: the conference machine 1000 as described in the first aspect.

[0197] In some examples, the office equipment may further include: a computer host, which is communicatively connected to the first multi-channel signal selection board of the conference machine via an input signal external port. The computer host may serve as an external input device of the conference machine. Exemplarily, the computer host may include an intelligent electronic device such as a laptop computer and a tablet computer.

[0198] In some examples, the office equipment may further include: a secondary screen display, which is communicatively connected to the system board of the conference machine via an output signal external port. The secondary screen display may 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 for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0200] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0201] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0202] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A conference machine, characterized in that: include: monitor; Display driver board; A system board is provided with an output signal external port; A first multi-channel signal selection board is provided with an input signal external port, and the first multi-channel signal selection board is electrically connected to the input ends of the system board and the display driver board respectively; The second multi-channel signal selection board is electrically connected to the output ends of the system board, the display and the display driving board respectively.

2. The conference machine according to claim 1, characterized in that: The system board includes a mode switching module; The mode switching module is used to switch the working mode of the conference machine, and the working mode includes a first working mode and a second working mode; When the conference machine is in the first working mode, the multimedia signal transmission channel between the first multi-channel signal selection board and the display driver board is disconnected, the multimedia signal transmission channel between the first multi-channel signal selection board and the system board is connected, the multimedia signal transmission channel between the second multi-channel signal selection board and the display driver board is disconnected, and the multimedia signal transmission channel between the second multi-channel signal selection board and the system board is connected; When 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 driver board is connected, the multimedia signal transmission channel between the first multi-channel signal selection board and the system board is disconnected, the multimedia signal transmission channel between the second multi-channel signal selection board and the display driver board is connected, and the multimedia signal transmission channel between the second multi-channel signal selection board and the system board is disconnected.

3. The conference machine according to claim 2, characterized in that: The input signal external port includes an HDMI input port and a DP input port; and / or, The output signal external port includes an HDMI output port and a DP output port.

4. The conference machine according to claim 3, characterized in that: Also includes: An HDMI signal conversion module, the HDMI signal conversion module is used to convert the signal received by the HDMI input port into a MIPI signal; and / or, The DP signal conversion module is used to convert the signal received by the DP input port into a MIPI signal.

5. The conference machine according to claim 3, characterized in that: Also includes: The first signal switching module is arranged in at least one of the system board, the first multi-channel signal selection board and the display driver board. The first signal switching module is used for switching the signal transmission between the HDMI input channel and the DP input channel based on the first input selection instruction when 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, characterized in that: The system board includes a camera input channel and a second signal switching module; The second signal switching module is used to disconnect the camera input channel in the second working mode; The second signal switching module is used to conduct the camera input channel in the first working mode; or, The camera input channels include multiple ones, and the second signal switching module is used to disconnect one or more of the 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-channel signal selection board.

7. The conference machine according to claim 1, characterized in that: 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, wherein the charging line interface is used to transmit current and digital electrical signals, the charging line interface is electrically connected to 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 to the first data switching module and the second data switching module respectively, and the power management module is electrically connected to 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-and-unplug detection pin, and the charging switching module is electrically connected to the first communication protocol detection pin, the second communication protocol detection pin, the first plug-and-unplug detection pin and the control circuit respectively; The control circuit is used to send a mode switching signal to the charging switching module, wherein the mode switching signal includes a normal mode signal and a common 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 is connected to an external device, the reverse charging channel of the charging line interface is turned on, and the reverse charging channel of the charging line interface includes the connected charging line interface, the first data switching module and the power management module; 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 is connected to an external device, the transmission channel of the output signal external port is normally turned on, and the transmission channel of the output signal external port includes the connected output signal external port, the second data switching module and the control circuit.

8. The conference machine according to claim 7, characterized in that: 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 transistor, the output end of the first plug detection pin is electrically connected to the input end of the controllable switch, and the output end of the controllable switch is electrically connected to 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 respectively connected to the input end of the OR gate circuit, and the selection switch is connected between the output end of the OR gate circuit and the first data switching module; The control circuit is used to send the mode switching signal to the controllable switch and the selection switch, the first electrode of the triode is connected to the output end of the controllable switch, the second electrode of the triode is grounded, and the third electrode of the triode is used to access the mode switching signal; In the normal mode, the controllable switch is turned on, the selection switch is turned off, the transistor is turned off, the controllable switch outputs a first detection signal, and when the charging line interface is connected to an external device, the reverse charging channel of the charging line interface is turned on; In the common mode, the controllable switch is disconnected, the selection switch is turned on, the transistor is turned on, the selection switch outputs a second detection signal, and when the output signal external port is connected to an external device, the transmission channel of the output signal external port is normally turned on.

9. An office equipment, characterized in that: include: A conference machine as claimed in any one of claims 1 to 8.

10. The office equipment according to claim 9, characterized in that: Also includes: A computer host, which is communicatively connected with the first multi-channel signal selection board of the conference machine via an input signal external port; and / or, The secondary screen display is communicatively connected with the system board of the conference machine via an output signal external port.

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