Multi-screen switching equipment

Abstract

A multi-screen switching device comprises a plurality of video interfaces, a plurality of first switching modules, a plurality of groups of first host interfaces and a plurality of internal loads. The internal loads are connected with the first host interfaces respectively, video signals output by the external control devices are received through the internal loads, output of the video signals can be kept by the external control devices all the time, and seamless switching is achieved when an output source of the video signals is switched from one external control device to another external control device. After part of the external control equipment detects that the external control equipment is disconnected with the external display equipment, part of the display settings are initialized, the video signals output by the external control equipment are received through the internal load, meanwhile, the output state of each external control equipment can be kept, and initialization of the display settings is avoided. Rapid switching of external display equipment or rapid switching of external control equipment can be realized through the first switching module.

Description

Technical Field

[0001] This application belongs to the technical field of docking stations, and particularly relates to a multi-screen switching device. Background Art

[0002] Currently, computers have become an important work device. In order to improve productivity, a person can have multiple computers and multiple monitors. When multiple computers are directly connected to multiple monitors, there are likely to be problems such as switching delays and black screens when switching between computers or between monitors, which affects work efficiency. Summary of the Invention

[0003] The purpose of this application is to provide a multi-screen switching device, aiming to solve the problems of switching delays and black screens that occur when traditional multiple computers are directly connected to multiple monitors.

[0004] The first aspect of the embodiment of this application provides a multi-screen switching device, including: a plurality of video interfaces for connecting to external display devices; a plurality of first switching modules, where the first switching modules correspond to the video interfaces one by one, and the common end of the first switching module is connected to the corresponding video interface; multiple groups of first host interfaces, where one group of the first host interfaces is used to connect to an external control device, the first switching module includes multiple connection terminals, and the connection terminals of one first switching module are respectively connected to different groups of the first host interfaces; multiple internal loads, and each of the first host interfaces is respectively connected to at least one of the internal loads, and the internal loads are used to receive video signals output by the external control device.

[0005] In one embodiment, it further includes a control module, where the control module is connected to the control ends of each of the first switching modules, and the control module is used to control one connection terminal of the first switching module to be connected to the common end.

[0006] In one embodiment, the first switching module includes a plurality of first buffer units and a first switching switch; the common end of the first switching switch is connected to the corresponding video interface, and each connection terminal of the first switching switch is respectively connected to the corresponding first host interface through each of the first buffer units.

[0007] In one embodiment, the video interface includes at least one of HDMI interface, SDI interface, VGA interface, DVI interface, and AV interface.

[0008] In one embodiment, it further includes a plurality of audio transmission modules; the audio transmission module includes an audio interface, a second switching module, and a plurality of second host interfaces; the audio interface is used to connect to an external audio device; the common terminal of the second switching module is connected to the corresponding audio interface, the second switching module includes a plurality of connection terminals, and each connection terminal of one second switching module is respectively connected to a different second host interface; each of the second host interfaces is used to connect to a different external control device.

[0009] In one embodiment, the second switching module includes a plurality of second buffer units and a second switching switch; the common terminal of the second switching switch is connected to the corresponding audio interface, and each connection terminal of the second switching switch is respectively connected to the corresponding second host interface through each of the second buffer units.

[0010] In one embodiment, the second switching module further includes a plurality of analog-to-digital conversion units and digital-to-analog conversion units; the common terminal of the second switching switch is connected to the audio interface through the digital-to-analog conversion unit, and at least one of the analog-to-digital conversion units is provided between each connection terminal of the second switching switch and the corresponding second host interface.

[0011] In one embodiment, it further includes a plurality of function signal transmission modules; the function signal transmission module includes a function interface, a third switching module, and a plurality of third host interfaces; the function interface is used to connect to an external function device; the common terminal of the third switching module is connected to the corresponding function interface, the third switching module includes a plurality of connection terminals, and each connection terminal of one third switching module is respectively connected to a different third host interface; each of the third host interfaces is used to connect to a different external control device.

[0012] In one embodiment, the function interface includes at least one of a USB interface and a Lightning interface.

[0013] In one embodiment, it includes two of the video interfaces and two groups of the first host interfaces, and each group of the first host interfaces includes two of the first host interfaces.

[0014] The beneficial effects of the embodiments of the present application compared with the prior art are as follows: By receiving the video signal output by the external control device through the internal load, each external control device can always maintain the output of the video signal, and seamless switching can be achieved when the video signal output source is switched from one external control device to another external control device. After some external control devices detect that the connection with the external display device is disconnected, they will initialize some display settings. By receiving the video signal output by the external control device through the internal load, the output states of each external control device can also be maintained, avoiding the initialization of display settings.

[0015] The first switching module can be used to achieve quick switching of an external display device or quick switching of an external control device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of a multi-screen switching device provided by an embodiment of the present application;

[0017] Figure 2 Another schematic diagram of a multi-screen switching device provided by an embodiment of the present application;

[0018] Figure 3 Schematic diagram of the first switching module provided by an embodiment of the present application;

[0019] Figure 4 Schematic diagram of the audio transmission module provided by an embodiment of the present application;

[0020] Figure 5 Schematic diagram of the functional signal transmission module provided by an embodiment of the present application;

[0021] Figure 6 Another schematic diagram of a multi-screen switching device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present application and are not used to limit the present application.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0026] Figure 1 The schematic diagram of a multi-screen switching device provided by an embodiment of this application is shown. For the sake of convenience of description, only the parts related to this embodiment are shown and are described in detail as follows:

[0027] A multi-screen switching device 10 includes: a plurality of video interfaces 100, a plurality of first switching modules 200, multiple groups of first host interfaces 300, and a plurality of internal loads 400.

[0028] Among them, the video interface 100 is used to connect to an external display device 20. The first switching modules 200 correspond to the video interfaces 100 one by one, and the common terminal of the first switching module 200 is connected to the corresponding video interface 100. A group of first host interfaces 300 is used to connect to an external control device 30. The first switching module 200 includes a plurality of terminals, and the terminals of one first switching module 200 are respectively connected to different groups of first host interfaces 300. Each first host interface 300 is respectively connected to at least one internal load 400, and the internal load 400 is used to receive the video signal output by the external control device 30.

[0029] By receiving the video signal output by the external control device 30 through the internal load 400, each external control device 30 can always maintain the output of the video signal, and seamless switching can be achieved when the output source of the video signal is switched from one external control device 30 to another external control device 30. After some external control devices 30 detect that the connection with the external display device 20 is disconnected, they will initialize some display settings. For example, it may cause changes in the resolution or the position and size of the displayed software window. By receiving the video signal output by the external control device 30 through the internal load 400, the output states of each external control device 30 can also be maintained, avoiding the initialization of display settings.

[0030] It can be understood that at the same time, the first switching module 200 can only connect the common terminal to one of the terminals.

[0031] The first switching module 200 can be used to achieve quick switching of the external display device 20 or the external control device 30. For example, each first switching module 200 can be used to control each video interface 100 to be connected to any group of first host interfaces 300 simultaneously, so as to connect each external display device 20 to the same external control device 30 and enable switching between the external control devices 30. Different first switching modules 200 can also connect each video interface 100 to different first host interfaces 300. By independently controlling each first switching module 200, flexible connection between the video interface 100 and the first host interface 300 can be achieved.

[0032] Among them, the external control device 30 can be an intelligent device such as a computer or a mobile phone, and the external display device 20 can be a device such as a display or a projector. The embodiments of the present application do not limit the external control device 30 and the external display device 20.

[0033] Preferably, the number of terminals of each first switching module 200 is the same as the number of groups of the first host interfaces 300, so that each first switching module 200 can be connected to each external control device 30.

[0034] In some embodiments, the internal load 400 can provide an analog signal to the corresponding first host interface 300. After the external control device 30 recognizes the analog signal, the internal load 400 is recognized as a display device, and a corresponding video signal is output.

[0035] Specifically, the internal load 400 can include an analog EDID (Extended display identification data) unit, which can send an analog EDID signal to the external control device 30. After receiving the EDID signal, the external control device 30 regards the internal load 400 as a display device, and thus continuously outputs a video signal to the internal load 400. The analog EDID unit can specifically include an EDID chip.

[0036] In one embodiment, as Figure 2 shown, the multi-screen switching device 10 further includes a control module 500. The control module 500 is connected to the control ends of each first switching module. The control module 500 is used to control one terminal of the first switching module to be connected to the common terminal.

[0037] Specifically, the control module 500 can include a physical switch or can also include a logic control circuit, a chip, etc. The present embodiment does not limit it.

[0038] In some embodiments, the control module 500 can also be connected to external devices to access the control instructions provided by the external devices and control the operation of each first switching module according to the control instructions.

[0039] In one embodiment, as Figure 3 shown, the first switching module 200 includes a plurality of first buffer units 210 and a first switching switch 220. Among them, the first switching switch 220 can include physical switches such as touch switches, or can include electrically controlled switches such as relays. Among them, the first buffer unit 210 can specifically include buffer chips.

[0040] The common terminal of the first switching switch 220 is connected to the corresponding video interface 100, and each terminal of the first switching switch 220 is respectively connected to the corresponding first host interface 300 through each first buffer unit 210.

[0041] It can be understood that at the same time, the first switching switch 220 can only connect the common terminal to one of the terminals.

[0042] When the terminal corresponding to the first buffer unit 210 or the corresponding external control device 30 is not connected to the video interface 100, the first buffer unit 210 can cache the video signal. When the terminal corresponding to the first buffer unit 210 or the corresponding external control device 30 is connected to the video interface 100, the first buffer unit 210 can quickly release the video signal, improve the switching speed of the display screen, and avoid the situation of long-term black screen.

[0043] In one embodiment, the video interface 100 includes at least one of an HDMI interface, an SDI interface, a VGA interface, a DVI interface, and an AV interface.

[0044] It can be understood that the first host interface 300 can also include an interface corresponding to the model of the video interface 100. For example, when the video interfaces 100 are all HDMI interfaces, each of the first host interfaces 300 can be an HDMI interface.

[0045] In one embodiment, the multi-screen switching device 10 further includes a plurality of audio transmission modules 600. As Figure 4 shown, the audio transmission module 600 includes an audio interface 610, a second switching module 620, and a plurality of second host interfaces 630.

[0046] The audio interface 610 is used to connect to an external audio device. The common terminal of the second switching module 620 is connected to the corresponding audio interface 610. The second switching module 620 includes a plurality of connection terminals, and each connection terminal of one second switching module 620 is respectively connected to a different second host interface 630. Each second host interface 630 is used to connect to a different external control device 30.

[0047] Among them, the audio device may include speakers such as headphones, speakers, and horns.

[0048] It can be understood that at the same time, the second switching module 620 can only connect the common terminal to one of the connection terminals, so that the corresponding audio interface 610 is connected to one of the second host terminals.

[0049] In one embodiment, the audio interface 610 includes a 3.5 mm interface.

[0050] It can be understood that the second host interface 630 may also include an interface corresponding to the model of the audio interface 610. For example, when the audio interfaces 610 are all 3.5 mm interfaces, each second host interface 630 may be a 3.5 mm interface.

[0051] In one embodiment, the second switching module 620 includes a plurality of second buffer units 621 and a second switching switch 622. The common terminal of the second switching switch 622 is connected to the corresponding audio interface 610, and each connection terminal of the second switching switch 622 is respectively connected to the corresponding second host interface 630 through each second buffer unit 621.

[0052] It can be understood that at the same time, the second switching switch 622 can only connect the common terminal to one of the connection terminals.

[0053] When the connection terminal corresponding to the second buffer unit 621 or the corresponding external control device 30 is not connected to the audio interface 610, the second buffer unit 621 can cache the video signal. When the connection terminal corresponding to the second buffer unit 621 or the corresponding external control device 30 is connected to the video interface 100, the second buffer unit 621 can quickly release the audio signal, thereby realizing seamless switching of the sound signal.

[0054] In one embodiment, as Figure 4 shown, the second switching module 620 further includes a plurality of analog-to-digital conversion units 623 and digital-to-analog conversion units 624. The common terminal of the second switching switch 622 is connected to the audio interface 610 through the digital-to-analog conversion unit 624, and at least one analog-to-digital conversion unit 623 is provided between each connection terminal of the second switching switch 622 and the corresponding second host interface 630.

[0055] It should be noted that the audio signals output by the external control device 30 are usually analog signals. When multiple audio signals are transmitted to the second switching switch 622 simultaneously, the audio signals will interfere with each other. After converting the audio signals into digital signals through the analog-to-digital conversion unit 623 and then providing them to the second switching switch 622, the mutual interference between the audio signals can be avoided. The audio signals output by the second switching switch 622 can be converted into analog signals by the digital-to-analog conversion unit 624 and then provided to the corresponding external audio device.

[0056] In one embodiment, as Figure 5 shown, the multi-screen switching device 10 further includes a plurality of function signal transmission modules 700. The function signal transmission module 700 includes a function interface 710, a third switching module 720, and a plurality of third host interfaces 730. The function interface 710 is used to connect to an external function device. The common terminal of the third switching module 720 is connected to the corresponding function interface 710. The third switching module 720 includes a plurality of terminals, and each terminal of one third switching module 720 is respectively connected to a different third host interface 730; each third host interface 730 is used to connect to a different external control device 30.

[0057] It can be understood that at the same time, the third switching module 720 can only connect the common terminal to one of the terminals. To connect the external function device to one of the external control devices 30.

[0058] In one embodiment, the function interface 710 includes at least one of a USB interface and a Lightning interface.

[0059] It can be understood that the third host interface 730 can also include an interface corresponding to the model of the function interface 710. For example, when the function interfaces 710 are all USB interfaces, each of the third host interfaces 730 can be a USB interface.

[0060] In one embodiment, as Figure 6 shown, the multi-screen switching device 10 includes two video interfaces 100 (i.e., Figure 6 the shown video interface 100a and video interface 100b) and two groups of first host interfaces 300. Each group of first host interfaces 300 includes two first host interfaces 300 (i.e., Figure 6 the shown first host interface 300a, first host interface 300b, first host interface 300c, and first host interface 300d. Among them, the first host interface 300a and the first host interface 300b are one group, and the first host interface 300c and the first host interface 300d are one group).

[0061] Specifically, the multi-screen switching device 10 includes two first switching modules 200 (i.e.,Figure 6 The first switching modules 200a and 200b shown), each switching module includes two terminals. The common terminal of each first switching module 200 is respectively connected to the corresponding video interface 100, and the two terminals of one first switching module 200 are respectively connected to two groups of first host interfaces 300.

[0062] Those skilled in the art can clearly understand that for the convenience and brevity of description, only the above division of each functional unit and module is used as an example for illustration. In practical applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiments can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of this application. The specific working process of the units and modules in the above system can refer to the corresponding process in the foregoing method embodiments and will not be elaborated here.

[0063] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0064] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application and should all be included in the protection scope of the present application.

Claims

1. A multi-screen switching device, characterized in that, Comprising: A plurality of video interfaces for connecting to an external display device; A plurality of first switching modules, each of the first switching modules corresponding to one of the video interfaces, and a common terminal of the first switching module being connected to the corresponding video interface; Multiple groups of first host interfaces, one group of the first host interfaces being used to connect to an external control device, each of the first switching modules including a plurality of connection terminals, and the connection terminals of one of the first switching modules being respectively connected to different groups of the first host interfaces; A plurality of internal loads, each of the first host interfaces being respectively connected to at least one of the internal loads, and the internal loads being used to receive video signals output by the external control device.

2. The multi-screen switching device according to claim 1, characterized in that It further includes a control module, the control module being connected to the control terminals of each of the first switching modules, and the control module being used to control a connection terminal of the first switching module to be connected to the common terminal.

3. The multi-screen switching device according to claim 1, wherein The first switching module includes a plurality of first buffer units and a first switching switch; The common terminal of the first switching switch is connected to the corresponding video interface, and the connection terminals of the first switching switch are respectively connected to the corresponding first host interfaces through the respective first buffer units.

4. The multi-screen switching device according to claim 1, wherein The video interface includes at least one of an HDMI interface, an SDI interface, a VGA interface, a DVI interface, and an AV interface.

5. The multi-screen switching device according to any one of claims 1 to 4, characterized in that, It further includes a plurality of audio transmission modules; the audio transmission modules include audio interfaces, second switching modules, and a plurality of second host interfaces; The audio interface is used to connect to an external audio device; The common terminal of the second switching module is connected to the corresponding audio interface, each of the second switching modules including a plurality of connection terminals, and the connection terminals of one of the second switching modules being respectively connected to different ones of the second host interfaces; Each of the second host interfaces is used to connect to a different one of the external control devices.

6. The multi-screen switching device according to claim 5, wherein The second switching module includes a plurality of second buffer units and a second switching switch; The common terminal of the second switching switch is connected to the corresponding audio interface, and the connection terminals of the second switching switch are respectively connected to the corresponding second host interfaces through the respective second buffer units.

7. The multi-screen switching device according to claim 6, characterized in that, The second switching module further includes a plurality of analog-to-digital conversion units and digital-to-analog conversion units; The common terminal of the second switching switch is connected to the audio interface through the digital-to-analog conversion unit, and at least one of the analog-to-digital conversion units is provided between the connection terminals of the second switching switch and the corresponding second host interfaces.

8. The multi-screen switching device according to any one of claims 1 to 4, characterized in that, It further includes a plurality of functional signal transmission modules; the functional signal transmission modules include functional interfaces, third switching modules, and a plurality of third host interfaces; The functional interface is used to connect to an external functional device; The common terminal of the third switching module is connected to the corresponding functional interface, each of the third switching modules including a plurality of connection terminals, and the connection terminals of one of the third switching modules being respectively connected to different ones of the third host interfaces; Each of the third host interfaces is used to connect to a different one of the external control devices.

9. The multi-screen switching device according to claim 8, wherein The functional interface includes at least one of a USB interface and a Lightning interface.

10. The multi-screen switching device according to any one of claims 1 to 4, characterized in that, It includes two of the said video interfaces and two sets of the said first host interfaces, and each set of the said first host interfaces includes two of the said first host interfaces.

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