An HDMI Matrix KVM control board

Abstract

The application relates to an HDMI Matrix KVM control board, which comprises a control mainboard, a plurality of connection interfaces are arranged on the control mainboard, the connection interfaces are respectively connected to KVMs of a plurality of different PCs, the PCs comprise PortA_A, PortA_B and PortB, an HDMI Matrix is further arranged in the control mainboard, the HDMI Matrix is used for switching any KVM signal in the PortA_A or the PortA_B to the PortB, so as to form a KVM combination on the PortB. The application has the effect of supporting multiple HDMI inputs of each PC and supporting output to any port of the PC.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of computers, in particular to a HDMI Matrix KVM control board. BACKGROUND

[0002] High Definition Multimedia Interface (HDMI) is a fully digital video and AUDIO transmission interface, which can transmit uncompressed AUDIO and video signals. HDMI can be used for set-top boxes, DVD players, PCs, TVs, game consoles, integrated amplifiers, digital audio and TV sets, etc.

[0003] HDMI matrix switching is to transmit one or more video HDMI signals to one or more display devices. For example, two PC hosts share a display, and the HDMI matrix switcher can switch the content on the two computer hosts to the same or multiple displays.

[0004] The existing control board only implements HDMI matrix switching, or only implements simple KVM function (realizes multi-PC, single video input switching of each PC), but multi-PC, multi-channel HDMI input, and output to any output port cannot be supported, so it needs to be improved. SUMMARY

[0005] In order to enable support for multi-channel HDMI input and support for output to any port, the present application provides a HDMI Matrix KVM control board.

[0006] The HDMI Matrix KVM control board provided by the present application adopts the following technical scheme:

[0007] A HDMI Matrix KVM control board, comprising a control board, a plurality of connection interfaces are arranged on the control board, the connection interfaces are respectively connected to the KVM of a plurality of different PCs, and the PC includes PortA_A, PortA_B and PortB;

[0008] The control board further comprises an HDMI Matrix, which is used to switch any KVM signal in the PortA_A or the PortA_B to the PortB, so as to form a KVM combination on the PortB.

[0009] When the AUDIO signal and the video signal need to be switched between different PCs, the user inputs on the KVM according to the requirement, the controller in the control mainboard generates a switching signal according to the input of the KVM, and switches the HDMI interface of different PCs, i.e., PortA_A, PortA_B and PortB, according to the HDMI Matrix, switches the video signal, and switches the AUDIO signal on PortA_A, PortA_B and PortB, so that multi-channel HDMI input of each PC is supported, and HDMI matrix switching can be realized while outputting to any output port.

[0010] Optionally, the control mainboard is provided with an AX controller and an EMU controller, the EMU controller is provided with an HDMI Matrix for switching PortA_A, PortA_B and PortB, the AX controller is used for generating a switching signal based on the HDMI Matrix according to an input switching instruction, and transmitting the switching signal to the EMU controller to realize HDMI switching.

[0011] By adopting the above technical solution, input is performed on the KVM, the signal generated by the KVM is transmitted to the AX controller, the AX generates a corresponding switching signal according to the input content, and the EMU controller controls PortA_B and PortB to switch multiple interfaces under the HDMI Matrix, so as to switch any one of the pictures on PortA_B or PortA_A to PortB.

[0012] Optionally, PortA_A, PortA_B and PortB are respectively provided with one main screen and one auxiliary screen, the main screen and the auxiliary screen correspond to one HDMI input respectively, the HDMI input of the main screen is set as Master, and the HDMI input of the auxiliary screen is set as Slave; the EMU controller is further used for controlling the signals of PortA_A and PortA_B to switch based on the HDMI Matrix according to the switching signal, so as to form a new HDMI combination on PortB, and realize switching of any main screen or auxiliary screen on PortA_A and PortA_B to any main screen or auxiliary screen on PortB.

[0013] By adopting the above technical solution, any main screen or auxiliary screen of PortA_A and PortA_B can be switched to PortB according to the HDMI Matrix when switching, further multi-channel HDMI input is supported, and output to any port is supported.

[0014] Optionally, the AX controller is further configured to generate a switching instruction for switching the KVM according to the input, so as to control the signal switching between the PortA_A and the PortA_B, and form a new KVM combination on the PortB.

[0015] By using the above technical solution, the switching instruction for controlling the KVM can be sent according to the demand, so that the KVM input can be switched.

[0016] Optionally, the AX controller is further configured to generate a switching instruction for switching the Audio signal according to the input instruction, so as to switch the Audio signal of the PortA_A or the PortA_B to the PortB respectively.

[0017] By using the above technical solution, the switching of the corresponding Audio signal can be performed after the HDMI switching.

[0018] Optionally, the AX controller is further configured to recognize the key position of the keyboard in the KVM.

[0019] By using the above technical solution, the keyboard in the KVM can be recognized, so as to recognize the specific key position of the key input by the keyboard.

[0020] Optionally, the AX controller is further provided with a hot key for switching the KVM according to the recognized key position, and the hot key is a key position with a specific pressing sequence, so as to perform different forms of switching according to the hot key input on the PortB.

[0021] By using the above technical solution, the KVM can be switched through the hot key, so that the switching of the KVM is more efficient.

[0022] Optionally, the AX controller is further configured to generate a switching instruction for switching the USB2.0 signal according to the input instruction, so as to switch the USB2.0 port of the PortA_A or the PortA_B to the PortB respectively.

[0023] By using the above technical solution, the USB2.0 interface can be switched according to the input instruction.

[0024] Optionally, different HUBs are connected between the control mainboard and the KVM, and the HUBs are configured to switch the USB input, and the USB input includes AUDIO input and KVM input.

[0025] By using the above technical solution, the AUDIO in the KVM can be switched through the HUB.

[0026] Optionally, the AX controller is further configured to generate a switching instruction of the switching MIC signal according to the input instruction, so as to switch the MIC signal of the PortA_A or the PortA_B to the PortB respectively.

[0027] By using the above technical solution, the MIC can be switched through the input instruction.

[0028] In summary, the present application has at least one of the following beneficial technical effects:

[0029] 1. Multiple HDMI inputs of each PC are realized by the HDMI Matrix, and output to any port is supported.

[0030] 2. Multiple inputs of KVM and AUDIO and output to any port are supported.

[0031] 3. The input and output modes are switched by hot keys. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structural block diagram of a HDMI Matrix KVM control board according to an embodiment of the present application;

[0033] Figure 2 is a mode switching diagram of a HDMI Matrix KVM control board according to an embodiment of the present application;

[0034] Figure 3 is a connection interface diagram of a HDMI Matrix KVM control board according to an embodiment of the present application. DETAILED DESCRIPTION

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] In order to realize multiple HDMI inputs and support output to any port, an embodiment of the present application discloses a HDMI Matrix KVM control board.

[0037] Referring to Figure 1 A HDMI Matrix KVM control board comprises a control mainboard, and a plurality of connection interfaces are arranged on the control mainboard and connected to KVMs of a plurality of different PCs, wherein the PC comprises PortA_A, PortA_B and PortB.

[0038] Referring to Figure 1 and Figure 2The control mainboard is further provided with an HDMI Matrix, which is used to switch any KVM signal in PortA_A or PortA_B to PortB, so as to form a KVM combination on PortB.

[0039] Wherein, KVM (Keyboard Video Mouse) is a multi-computer switcher, which belongs to computer management equipment. A set of keyboard, mouse and display can be used to control multiple computers through KVM. KVM can access and control computers through direct connection of keyboard, video and mouse (KVM) ports. KVM can share a set of mouse, keyboard and display for multiple computers without modifying software of target machines.

[0040] PortA_A, PortA_B and PortB can be EXT PC (External, internal computer), Office PC (personal computer) and EXT PC (external computer) respectively. Internal PC and EXT PC are computers for generating video signals, AUDIO signals and displaying, and Office PC is an office computer. Office PC controls signal switching of Internal PC and EXT PC through KVM, and classifies these PCs according to functions, so that these PCs can be switched according to specific functions. In other embodiments, the control mainboard can also be connected with KVM separately, so that Internal PC, Office PC and EXT PC can also be directly switched through the directly connected KVM.

[0041] The controller is provided with an HDMI Matrix, which is used to switch a plurality of related connection interfaces on PortA_B and PortB according to a switching signal, so as to switch the AUDIO signal and the video signal on PortA_B and PortB. In the embodiment, the user sends a switching signal through KVM when operating the keyboard, and the video signal and the AUDIO signal on the Office PC are switched to the EXT PC for display through the HDMI Matrix of the control mainboard of the application. Since the number of screens of the Office PC can be multiple, the video signals displayed on different screens need to be transmitted. PortA_A, PortA_B and PortB can be flexibly switched. For example, the selected KVM combination has two cases, the first is PortA_A+PortB, and the second is PortA_B+PortB. In combination with the figure, the output matrix mode of HDMI has 32 kinds. For each PC, two-way HDMI output is a master and a slave.

[0042] In combination with the AUDIO / KB / MS following the uplink PC, the combination of HDMI Matrix and AUDIO / KB / MS has 32x 2 kinds. Considering the actual application, PortA and PortB can be connected to one-way HDMI, two-way HDMI or no HDMI. Therefore, the actual combination situation will appear several hundred kinds. We only need to adjust the software part to realize the output of multiple combination modes, which can easily meet the switching demand. The control mainboard can be matched with any device with HDMI output, such as a television box, a DVD machine, etc., and is suitable for popularization to multiple industries.

[0043] The control mainboard is provided with an AX controller and an EMU controller. The EMU controller is provided with an HDMI Matrix for switching PortA_A, PortA_B and PortB. The AX controller is used to generate a switching signal based on the HDMI Matrix according to an input switching instruction, and transmit the switching signal to the EMU controller, so as to realize HDMI switching.

[0044] The HDMI Matrix is a HDMI setting mode for switching between multiple HDMI inputs and multiple HDMI outputs. In electrical equipment, if a switchable connection relationship needs to be established between multiple inputs and multiple outputs, such a switching device is often named as the matrix. In order to realize the switching between multiple HDMI inputs and multiple HDMI outputs, the HDMI Matrix is arranged in the EMU controller of the control mainboard in the embodiment, so as to switch the HDMI signal in the form of multiple inputs and multiple outputs between different PCs.

[0045] Secondly, in this embodiment, the AX controller and the EMU controller are connected via an I2C bus. The I2C bus is a simple bidirectional two-wire synchronous serial bus, which includes an SDA serial data line and an SCL serial clock line. In this embodiment, signal data is transmitted between the AX controller and the EMU controller via the serial data line and the serial clock line.

[0046] Reference Figure 1 and Figure 3 From left to right, the ports are: Port B (HDMI IN) and Port A_A (USB IN) for connecting to an office PC; Port A_A (HDMI IN) and Port A_A (USB IN) for connecting to an external PC; HDMI output; microphone; HP; USB 2.0; USB 1.1; and DCIN. The USB 2.0 and USB 1.1 ports output signals received from the KVM, the DCIN port provides 12V power to the controller, and the HP (Head Phone) port outputs voice signals from a head-mounted audio device.

[0047] PortA_A, PortA_B, and PortB are each configured with a main screen and a secondary screen. The main screen and the secondary screen each correspond to an HDMI input. The HDMI input of the main screen is set as Master, and the HDMI input of the secondary screen is set as Slave. The EMU controller is also used to control the signals of PortA_A and PortA_B to switch based on the HDMI Matrix according to the switching signal, so as to form a new HDMI combination on PortB, thereby enabling the switching of any main screen or secondary screen on PortA_A or PortA_B to any main screen or secondary screen on PortB.

[0048] In this embodiment, PortA_A, PortA_B, and PortB can each be configured with two outputs, and each of PortA_A, PortA_B, and PortB can be configured with one main screen and one secondary screen. The outputs corresponding to the main screen and secondary screen are configured as one Master and one Slave. Figure 1The Matrix part in the figure can be seen that the Internet PC main screen Internet Master is BM (PortA_B Master), the Internet PC secondary screen Internet Slave is BS (PortA_B Slave), the Office PC main screen Office Master is AM (PortA_A Master), and the Office PC secondary screen Office is AS (PortA_A Slave). BM, BS, AM and AS can be switched by HDMI Matrix, and switched to HDMIA and HDMIB. HDMIA can be any of BM, BS, AM and AS, and HDMIB can be any of BM, BS, AM and AS. Therefore, the HDMI switch will follow the mode shown in the figure, including sixteen switching modes. In other embodiments, if each PC includes multiple secondary screens, more switching modes can be set to increase the switching effect.

[0049] The AX controller is also used to generate a switching instruction for switching any KVM according to the input, to control the signal switching of PortA_A and PortA_B, and to form a new KVM combination on PortB. In this embodiment, when the HDMI input for transmitting the video signal is transmitted to PortB according to the HDMI Matrix, the corresponding auxiliary input for the video signal is also required, such as the input of the keyboard in the KVM when text or character input is required in the switched screen, and the audio input is also required.

[0050] A different HUB is connected between the control mainboard and the KVM, and the HUB is used to switch the USB input, including the AUDIO input and the KVM input. The HUB is connected between the control mainboard and the KVM, and the HDMI interface has multiple inputs and multiple outputs, which can be switched according to the needs. The HUB is a hub, which is a multi-port repeater that shapes or regenerates the attenuated signal, and plays a role in expanding the network segment distance. In this embodiment, the HUB is used to enhance the connection strength between different PCs, so as to facilitate remote switching.

[0051] The AX controller is also used for key recognition of the keyboard in the KVM. If the video picture after switching of the HDMI signal needs to be operated on the new PC, the KVM can also be switched. Therefore, the AX controller is also used for sending a switching instruction of the USB to switch the KVM according to the requirement. Therefore, the control mainboard is also provided with USB interfaces connected with different KVMs, and when the different KVMs need to be switched, the switching instruction of the USB can be sent to switch the input on the different PCs. The connection interface also includes a USB2.0 interface and a USB1.1 interface connected with the KVM, and the USB2.0 interface and the USB1.1 interface are connected with the KVM and the control mainboard respectively, so that the different PCs can be controlled after the KVM is switched. The control mainboard is provided with a recognition program, which is used for recognizing the keys on the KVM through the USB2.0 interface and the USB1.1 interface.

[0052] Therefore, in the embodiment, the AX controller is also used for generating a switching instruction of the Audio signal according to the input instruction to switch the Audio signal of PortA_A or PortA_B to PortB respectively. After the video signal is transmitted, if the PC also includes the AUDIO signal that needs to be interpreted, the AUDIO signal also needs to be transmitted, so in other embodiments of the application, the connection interface also includes a USB Audio interface for transmitting the AUDIO signal and a power supply interface for supplying power to the control mainboard. The AUDIO signal is received on the USB Audio interface, and the AUDIO signal is switched so that the switched AUDIO signal can be switched on the different PCs.

[0053] When the keyboard in the KVM and the Audio signal are switched according to the requirement, if the voice signal on PortB also needs to be collected, any MIC on PortA_A or PortA_B needs to be switched to PortB, and the AX controller is also used for generating a switching instruction of the MIC signal according to the input instruction to switch the MIC signal of PortA_A or PortA_B to PortB respectively.

[0054] When the KVM needs to be switched, different instructions need to be input for the switching process of the different KVMs, and when the input instructions are complicated, errors are easy to be input. Therefore, in the embodiment, the AX controller is also provided with a hot key for switching the KVM according to the recognized key, and the hot key is a key with a specific pressing sequence to switch in different forms according to the hot key input on PortB. Referring to Figure 2, by pressing different hot keys, to set different switching modes, such as double-clicking ALT+left direction key to realize the switching of BM, BS to BM, AM as mode one, in the process of switching in different modes, to switch the corresponding mode according to the requirement, to achieve the required switching effect. Therefore, for all the main screens and secondary screens in PortA_A, PortA_B and PortB, six HDMI lines are provided in this embodiment, including four input and two output, which are switched by hot keys. In other embodiments, hot keys for switching can also be provided on the control motherboard, that is, motherboard hot keys, which are switched by motherboard hot keys, and infrared probes can also be provided for infrared remote control to switch.

[0055] The implementation principle of the HDMI Matrix KVM control board in the embodiment of the present application is: when the AUDIO signal and the video signal need to be switched between different PCs, the user inputs the corresponding hot key on the KVM according to the requirement, the controller in the control motherboard generates a switching signal according to the input of the KVM, and the HDMI Matrix switches the HDMI interface in different PCs, i.e. PortA_A, PortA_B and PortB, switches the video signal, and switches the AUDIO signal on PortA_A, PortA_B and PortB, so that the HDMI matrix switching is realized, and each PC supports multiple HDMI input and outputs to any output port.

[0056] The above are the preferred embodiments of the present application, but not limit the protection scope of the present application, therefore: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An HDMI Matrix KVM control panel, characterized by, The control mainboard is provided with a plurality of connection interfaces, which are connected to a plurality of different KVMs of PC, and the PC includes PortA_A, PortA_B and PortB; The control mainboard is further provided with an HDMI Matrix, which is used to switch any KVM signal of the PortA_A or the PortA_B to the PortB to form a KVM combination on the PortB. The control mainboard is provided with an AX controller and an EMU controller, the EMU controller is provided with an HDMI Matrix for switching the PortA_A, PortA_B and PortB, the AX controller is used to generate a switching signal based on the HDMI Matrix according to the input switching instruction, and the switching signal is transmitted to the EMU controller to realize HDMI switching. The PortA_A, PortA_B and PortB are respectively provided with a main screen and a secondary screen, the main screen and the secondary screen correspond to one way of HDMI input respectively, the HDMI input of the main screen is set as Master, and the HDMI input of the secondary screen is set as Slave; the EMU controller is further used to control the signal switching of the PortA_A and PortA_B based on the HDMI Matrix according to the switching signal, to form a new HDMI combination on the PortB, and realize switching any main screen or secondary screen on the PortA_A and PortA_B to any main screen or secondary screen on the PortB.

2. The HDMI Matrix KVM control panel of claim 1, wherein, The AX controller is further used to generate a switching instruction for switching any KVM according to the input, to control the signal switching of the PortA_A and PortA_B, to form a new KVM combination on the PortB.

3. The HDMI Matrix KVM control panel of claim 1, wherein, The AX controller is further used to generate a switching instruction for switching Audio signal according to the input instruction, to switch the Audio signal of the PortA_A or PortA_B to the PortB respectively.

4. The HDMI Matrix KVM control panel of claim 1, wherein, The AX controller is further used to recognize the key position of the keyboard in the KVM.

5. The HDMI Matrix KVM control panel of claim 4, wherein, The AX controller is further provided with a hot key for switching the KVM according to the recognized key position, the hot key is a key position with a specific pressing sequence, to perform different forms of switching according to the input hot key on the PortB.

6. The HDMI Matrix KVM control panel of claim 1, wherein, The AX controller is further used to generate a switching instruction for switching USB2.0 signal according to the input instruction, to switch the USB2.0 port of the PortA_A or PortA_B to the PortB respectively.

7. The HDMI Matrix KVM control panel of claim 6, wherein, Different HUBs are connected between the control mainboard and the KVM, which are used to switch the USB input, and the USB input includes AUDIO input and KVM input.

8. The HDMI Matrix KVM control panel of claim 1, wherein, The AX controller is further configured to generate a switching instruction of the switching MIC signal according to an input instruction, so as to switch the MIC signal of the PortA_A or the PortA_B to the PortB respectively.

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