Multifunctional video signal switching device

Abstract

The utility model discloses a multifunctional video signal switching device comprising a DVI interface video matrix board, a USB interface switching board, a USB interface expansion board and a switching button power supply board. The DVI interface video matrix board provides M paths of DVI input signal interfaces and two paths of DVI output signal interfaces, and M is a positive integer and is greater than or equal to 1; the USB interface switching board is provided with M paths of USB input signal interfaces and two paths of USB output signal interfaces I, one path of USB output signal interface I is connected with an input port of the USB interface expansion board, and the USB interface expansion board is provided with M paths of USB output signal interfaces II; the switching key power supply board is connected with the DVI interface video matrix board and the USB interface switching board at the same time to realize synchronous switching of DVI and USB signals; and meanwhile, the switching key power supply board also supplies power to the DVI interface video matrix board, the USB interface switching board and the USB interface expansion board. The USB interface control device can be connected with a plurality of displays and a plurality of USB interface control devices, and can display required video signals and control devices according to the needs of users.

Description

TECHNICAL FIELD

[0001] The utility model relates to computer signal switching technical field, concretely relates to a multi -functional video signal switching device. BACKGROUND

[0002] The display and control console is a kind of equipment with display, control and man-machine interactive operation function, integrates computer, display and control component inside, is widely applied in various fields and various large-scale systems.

[0003] KVM is the English abbreviation of keyboard (Keyboard), display (Video) and mouse (Mouse), that is, a set of keyboard, mouse and display are used to realize the display and control of multiple computer hosts.But the output of KVM switching device in the prior art can only connect a set of keyboard, mouse, display, cannot connect multiple USB interface control devices and multiple display outputs, therefore, in the display and control console application with prominent advantages, it has been greatly limited. UTILITY MODEL CONTENT

[0004] Therefore, the utility model provides a multi -functional video signal switching device, can connect multiple display and multiple USB interface control device, can display required video signal and control device according to user needs.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A multi -functional video signal switching device, including DVI interface video matrix board, USB interface switching board, USB interface expansion board and switching key power board;

[0007] The DVI interface video matrix board provides M-way DVI input signal interface, 2-way DVI output signal interface, and the 2-way output is in copy mode, and M is a positive integer, and M is greater than or equal to 1;

[0008] There are M-way USB input signal interfaces on the USB interface switching board, and 2-way USB output signal interfaces I, wherein one of the USB output signal interfaces I is connected with the USB interface expansion board input port, the USB interface expansion board has M-way USB output signal interfaces II, and is used for connecting external USB interface control device;

[0009] The switching key power board is connected with the DVI interface video matrix board and the USB interface switching board simultaneously, realizes DVI and USB signal synchronous switching;Meanwhile, the switching key power board also powers the DVI interface video matrix board, the USB interface switching board and the USB interface expansion board.

[0010] Further, the switching key power board provides 5V power supply.

[0011] Further, the switching key power board is externally connected with the switching key panel and the 5V power supply.

[0012] Further, M key switches are arranged on the switching key panel to realize the synchronous switching of the DVI and the USB.

[0013] Further, the utility model also includes cast aluminum casing, and the DVI interface video matrix board, the USB interface switching board, the USB interface expansion board and the switching key board are placed in the cast aluminum casing, and the cast aluminum casing is provided with DVI input signal interface, DVI output signal interface, USB input signal interface and USB output signal interface II.

[0014] Beneficial effects:

[0015] 1, the utility model discloses on the KVM switching basis increases the expansion DVI output interface and USB interface, can connect multiple displayers and various USB interface control devices, through the setting of switching key power board, can show the required video signal and control device according to the user needs, improves the display and control centralization control of display control console, reduces the internal module quantity of display control console, promotes display control console user experience, plays an important role in display control console application.

[0016] 2, the utility model discloses that M key switches are arranged on the panel, and the synchronous switching of the DVI and the USB can be realized.

[0017] 3, the utility model also includes cast aluminum casing, and the interface is correspondingly arranged on the cast aluminum casing to facilitate centralized control. DETAILED DESCRIPTION

[0018] Figure 1 It is the principle diagram of the utility model.

[0019] Figure 2 It is the application connection diagram of the utility model.

[0020] Figure 3 It is the shell socket board schematic view of the utility model. DETAILED DESCRIPTION

[0021] The utility model will be described in detail in combination with the drawings and examples.

[0022] The utility model provides a kind of multifunctional video signal switching device, the device provides M group DVI (Digital Video Interface) and M group USB input signal interface, can simultaneously connect M host computer video signal input source, provides 2 way DVI output signal interface, M way USB output signal interface, can connect keyboard, mouse and other USB interface control equipment, M is positive integer, M=1.The 2 way DVI output signal interface can display any 1 way or 2 way video signal in M host computer according to requirement by switching key panel;M way USB output signal interface can connect USB interface control equipment in M host computer according to requirement, realize the display and control centralization control of display console.

[0023] Specifically, as shown in Figure 1 The device includes DVI interface video matrix board, USB interface switching board, USB interface expansion board and switching key power board, in the embodiment, M=4.

[0024] DVI interface video matrix board adopts 4-in-2-out DVI interface video switching matrix, provides 4 way DVI input signal interface, 2 way DVI output signal interface, and 2 way output is copy mode, that is, can support 4-in-2-out at most simultaneously, or 4-in-1-out, 3-in-2-out, 3-in-1-out, 1-in-1-out etc.; to increase transmission distance, reduce attenuation, increase video equalization technology, video long-distance transmission can be realized. 4 way DVI input signal interface is connected with the DVI output interface of different computer host respectively, and 2 way DVI output signal interface is connected with the DVI interface of display in 1 way, and the other way is connected to the external interface of display console, for external output display.

[0025] USB switching and expansion adopt the idea of front switching and rear expansion, and adopt the cascade mode of USB interface switching board and USB interface expansion board. There are 4 way USB input signal interfaces on the USB interface switching board, which are connected with the USB output interface of different computer host respectively;There are 2 way USB output signal interfaces I on the USB interface switching board, one of which is connected with the input port of USB interface expansion board, and the other one can be idle, or can be connected with USB signal, which is selected according to actual use demand;USB interface expansion board has 4 way USB output signal interfaces II, which are used for connecting external USB interface control equipment, such as connecting keyboard, mouse, interactive key and programmable touch keyboard.

[0026] Switching key power board is connected with DVI interface video matrix board and USB interface switching board simultaneously, to realize DVI and USB signal synchronous switching;Meanwhile, switching key power board also powers DVI interface video matrix board, USB interface switching board and USB interface expansion board, to provide 5V power supply.

[0027] The application also comprises a cast aluminum shell, a DVI interface video matrix board, a USB interface switching board, a USB interface expansion board and a switching key board are placed in the cast aluminum shell, and the cast aluminum shell is provided with a DVI input signal interface, a DVI output signal interface, a USB input signal interface and a USB output signal interface II.

[0028] As shown in Figure 2 the embodiment, three DVI input interfaces (DVI_I1-DVI_I3) of the DVI interface video matrix board are respectively connected to DVI output interfaces of three host computers, and the remaining one DVI input interface is not used, that is, the switching control of DVI signals of the three host computers is needed; two DVI output signal interfaces (DVI_O1, DVI_O2) are provided, wherein the DVI_O1 interface is connected to a DVI interface of a display, and the DVI_O2 interface is connected to an external interface of a display and control console for external DVI output display.

[0029] The USB input signal interfaces (USB_I1-USB_I3) of the USB interface switching board are respectively connected to USB output interfaces of the three host computers, and the remaining one USB input signal interface is not used, that is, the switching control of USB signals of the three host computers is needed; the USB interface switching board has two USB output signal interfaces, one of which is connected to the USB input interface of the USB interface expansion board, and the USB output interface of the USB interface expansion board has four USB output signal interfaces (USB_O, HUB1, HUB2), wherein two USB signals are provided in the USB_O interface and are respectively connected to a keyboard and a mouse, one USB signal is provided in the HUB1 interface and is used for connecting an interactive key, and one USB signal is provided in the HUB2 interface and is used for connecting a programmable touch keyboard.

[0030] The switching key power board is connected to the switching key panel and a 5V power supply through an IO / PW interface. Four key switches are provided on the switching key panel for realizing the synchronous switching of DVI and USB.

[0031] As shown in Figure 3 the embodiment, a socket board is provided on the cast aluminum shell, and the socket board is provided with DVI_I1, DVI_I2, DVI_I3, DVI_I4, DVI_O1, DVI_O2, USB_I1, USB_I2, USB_I3, USB_I4, USB_O, HUB1, HUB2 and IO / PW interfaces. The switching key panel is also provided on the cast aluminum shell.

[0032] The multifunctional signal switching device for the display and control console has the following performances:

[0033] 1) Four DVI signal inputs can be received;

[0034] 2) can receive 4-way USB signal input;

[0035] 3) can output 2-way DVI signal;

[0036] 4) can output 4-way USB signal;

[0037] 5) with 4 key switches can realize DVI and USB synchronous switching;

[0038] 6) 5V power supply;

[0039] 7) DVI signal maximum resolution supports 1920x1080@60Hz;

[0040] 8) USB signal supports USB2.0, USB3.0;

[0041] 9) video signal transmission distance ≥ 15 meters.

[0042] In summary, the above is only the preferred embodiment of the present application, and is not intended to limit the scope of protection of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A multifunctional video signal switching device, characterized in that: Including DVI interface video matrix board, USB interface switching board, USB interface expansion board and switching button power board; The DVI interface video matrix board provides M-way DVI input signal interface and 2-way DVI output signal interface, and the 2-way output is in copy mode, where M is a positive integer, M≥1; The USB interface switch board has M-way USB input signal interfaces and 2-way USB output signal interfaces I. One of the USB output signal interfaces I is connected to the input port of the USB interface expansion board. The USB interface expansion board has M-way USB output signal interfaces II for connecting to external USB interface control devices. The switch button power board is connected to the DVI interface video matrix board and the USB interface switching board at the same time to realize synchronous switching of DVI and USB signals; at the same time, the switch button power board also supplies power to the DVI interface video matrix board, the USB interface switching board and the USB interface expansion board.

2. The multifunctional video signal switching device according to claim 1, wherein: The switch button power board provides 5V power.

3. The multifunctional video signal switching device according to claim 2, wherein: The switch button power board is externally connected to the switch button panel and 5V power supply.

4. The multifunctional video signal switching device according to claim 3, wherein: M key switches are set on the switch button panel to achieve synchronous switching between DVI and USB.

5. The multifunctional video signal switching device according to any one of claims 1 to 4, characterized in that: It also includes a cast aluminum shell, in which the DVI interface video matrix board, USB interface switching board, USB interface expansion board, and switching key board are all placed. The cast aluminum shell is provided with a DVI input signal interface, a DVI output signal interface, a USB input signal interface, and a USB output signal interface II.

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