CN212659050U - KVM system based on centralized switching equipment - Google Patents
KVM system based on centralized switching equipment Download PDFInfo
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- CN212659050U CN212659050U CN202021857196.3U CN202021857196U CN212659050U CN 212659050 U CN212659050 U CN 212659050U CN 202021857196 U CN202021857196 U CN 202021857196U CN 212659050 U CN212659050 U CN 212659050U
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Abstract
The utility model discloses a KVM system based on centralized switching equipment. The system comprises a controlled host, a centralized switching device and a display control device, wherein the centralized switching device comprises a control unit, a switching unit, an input unit and an output unit which are respectively connected with an input switching end and an output switching end of the switching unit; the display control equipment sends a control instruction to the output unit through the USB line, and the control instruction is output to the controlled host through the USB line by the input unit after passing through the switching unit; the controlled host computer outputs audio and video signals to the input unit through the audio and video lines, and the audio and video signals are transmitted to the display control equipment through the output unit after passing through the switching unit for playing. The utility model discloses a set up input unit and output unit on centralized exchange equipment, can remove the sending box or receive the box in some specific application scenes, can remove sending box and receiving box sometimes even simultaneously, saved the hardware spending, reduced the wiring degree of difficulty.
Description
Technical Field
The utility model belongs to the technical field of audio and video transmission control, concretely relates to KVM system based on centralized switching equipment.
Background
KVM (Keyboard Video Mouse) enables an administrator to access and control multiple devices. Generally, the KVM is mainly composed of a transmitting end, a receiving end and a switching device, where the transmitting end and the receiving end are connected to the switching device through an optical fiber or a network. The existence of the sending end needs to have audio and video wires to connect a host (signal source) and a sending box, and an optical fiber or a network to connect the sending box and the exchange equipment, and the original system needs to be upgraded and modified, so that no method is basically provided, and because the optical fiber or the network is required to be wired again, sending end equipment is required to be added.
In most cases, the KVM system is separated from the computer, i.e., the computer host (server) is located in the computer room, the sending box and the switching device are also located in the computer room, and the receiving end is located under the workstation, as shown in fig. 1. So the distance between the computer host, the sending box and the exchange equipment is not too far; while cabling exists for both host to send box and send box to switch device links. The arrangement method has the problems of multiple system devices and complicated field construction and wiring.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems in the prior art, the present invention provides a KVM system based on a centralized switch, which can omit a sending box and/or a receiving box in some specific application scenarios by providing an input unit and an output unit 14 connected to the switch.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a KVM system based on centralized switching equipment comprises a controlled host, the centralized switching equipment and display control equipment, wherein the centralized switching equipment comprises a control unit, a switching unit, an input unit and an output unit which are respectively connected with an input switching end and an output switching end of the switching unit; the display control equipment sends a control instruction to the output unit through the USB line, and the control instruction is output to the controlled host through the USB line by the input unit after passing through the switching unit; the controlled host computer outputs audio and video signals to the input unit through the audio and video lines, and the audio and video signals are transmitted to the display control equipment through the output unit after passing through the switching unit for playing.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a set up input unit and output unit on centralized exchange equipment for realize the transmission of audio and video signal and control command between input unit and the controlled host computer, between output unit and the display control equipment, can save the transmission box and/or receive the box in some specific application scenes, for example, when controlled host computer is nearer with centralized exchange equipment, can remove the transmission box; when the display control equipment is close to the centralized exchange equipment, the receiving box can be removed; when the centralized switching equipment is close to the controlled host and the display control equipment, the sending box and the receiving box can be removed at the same time, so that the hardware expense is saved, and the wiring difficulty is reduced.
Drawings
FIG. 1 is a block diagram of a conventional KVM system;
fig. 2 is a block diagram of a KVM system based on a centralized switch device according to an embodiment of the present invention.
In fig. 2: 1-centralized switching equipment, 11-control unit, 12-switching unit, 13-input unit, 14-output unit, 2-controlled host and 3-display control equipment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment of the present invention provides a KVM system based on a centralized switch device, as shown in fig. 2, the system includes a controlled host 2, a centralized switch device 1 and a display control device 3, the centralized switch device 1 includes a control unit 11, a switch unit 12, and an input unit 13 and an output unit 14 connected to an input switch end and an output switch end of the switch unit 12, respectively; the display control device 3 sends a control instruction to the output unit 14 through the USB cable, and the control instruction is output to the controlled host 2 through the USB cable by the input unit 13 after passing through the switching unit 12; the controlled host 2 outputs audio and video signals to the input unit 13 through the audio and video lines, and the audio and video signals are transmitted to the display control device 3 through the output unit 14 after passing through the switching unit 12 for playing.
In this embodiment, the system mainly includes a controlled host 2, a centralized switching device 1, and a display control device 3. Wherein the content of the first and second substances,
the controlled host 2 is an audio/video signal source, and is mainly used for sending audio/video signals to the centralized switching device 1 under the action of a control instruction sent by the display control device 3.
And the display control device 3 is mainly used for playing audio and video signals and sending control instructions to the centralized switching device 1 through a mouse or a keyboard and other man-machine interaction devices.
The centralized switching equipment 1 is mainly used for realizing signal switching control. A general switching device is mainly composed of a control unit 11 and a switching unit 12. Unlike a general switching device, the centralized switching device 1 of the present embodiment is provided with one input unit 13 and one output unit 14 at the input switching end and the output switching end of the switching unit 12, respectively. The input unit 13 is arranged, so that the controlled host 2 can be directly connected with the centralized switching equipment 1 through the input unit 13, the controlled host 2 outputs audio and video signals to the input unit 13 through audio and video lines, and the switching is performed by the switching unit 12 after the audio and video signals are processed by signal format conversion and the like; the control instruction from the display control apparatus 3 can be received through the USB cable connected to the input unit 13. Therefore, the input unit 13 can be provided instead of the original sending box, and when the controlled host 2 is close to the centralized switching device 1, the sending box and the optical fiber or network cable connected thereto can be eliminated. Similarly, the output unit 14 is arranged to enable the display control device 3 to be directly connected with the centralized switching device 1 through the output unit 14, the display control device 3 receives the audio/video signals which are output by the output unit 14 and are processed through signal format conversion and the like through the audio/video lines, the control instruction sent by the display control device 3 is sent to the output unit 14 through the USB line, and the control instruction is switched to the input unit 13 through the switching unit 12. Therefore, the setting output unit 14 can replace the original receiving box, and the original receiving box can be eliminated when the display control apparatus 3 is close to the centralized switching apparatus 1. Therefore, the hardware structures and implemented functions of the input unit 13 and the output unit 14 should be the same as or similar to those of the original transmitting box and receiving box.
In this embodiment, by setting the input unit 13 and the output unit 14 on the centralized switching device 1, the sending box or the receiving box can be removed in some specific application scenarios, and sometimes even the sending box and the receiving box can be removed at the same time, which saves hardware cost and reduces wiring difficulty.
As an optional embodiment, the input unit 13 and the output unit 14 both include a controller module, and a signal processing module and a USB interface connected thereto, and the signal processing module mainly includes an audio/video signal separating/synthesizing circuit and a signal format conversion circuit.
This embodiment provides a technical solution of the input unit 13 and the output unit 14. The input unit 13 and the output unit 14 have the same structure, and are composed of a controller module, a signal processing module connected with the controller module, and a USB interface. The USB interface is used for transmitting a control instruction from the display control equipment 3; the signal processing module performs processing such as separation or synthesis, signal format conversion and the like on audio and video signals according to a specific application scene, for example, video signals in DVI, VGA, HDMI and SDI formats are converted into RGB and YCbCr formats. In order to save hardware cost, a USB interface can be developed on the basis of the original audio/video input card of the system and used as the input unit 13 and the output unit 14.
The above description is only for the description of several embodiments of the present invention, but the scope of the present invention should not be considered as the protection scope of the present invention, in which all the equivalent changes or modifications or the equal-scale enlargement or reduction etc. made according to the design spirit of the present invention should be considered as falling into the protection scope of the present invention.
Claims (2)
1. A KVM system based on centralized switching equipment is characterized in that the system comprises a controlled host, the centralized switching equipment and display control equipment, wherein the centralized switching equipment comprises a control unit, a switching unit, an input unit and an output unit which are respectively connected with an input switching end and an output switching end of the switching unit; the display control equipment sends a control instruction to the output unit through the USB line, and the control instruction is output to the controlled host through the USB line by the input unit after passing through the switching unit; the controlled host computer outputs audio and video signals to the input unit through the audio and video lines, and the audio and video signals are transmitted to the display control equipment through the output unit after passing through the switching unit for playing.
2. The KVM system based on centralized switching equipment according to claim 1, wherein each of the input unit and the output unit comprises a controller module, and a signal processing module and a USB interface connected to the controller module, wherein the signal processing module mainly comprises an audio/video signal separating/synthesizing circuit and a signal format converting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021857196.3U CN212659050U (en) | 2020-08-31 | 2020-08-31 | KVM system based on centralized switching equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021857196.3U CN212659050U (en) | 2020-08-31 | 2020-08-31 | KVM system based on centralized switching equipment |
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| Publication Number | Publication Date |
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| CN212659050U true CN212659050U (en) | 2021-03-05 |
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| CN202021857196.3U Active CN212659050U (en) | 2020-08-31 | 2020-08-31 | KVM system based on centralized switching equipment |
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