CN207397237U - A kind of KVM switch - Google Patents
A kind of KVM switch Download PDFInfo
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- CN207397237U CN207397237U CN201721586391.5U CN201721586391U CN207397237U CN 207397237 U CN207397237 U CN 207397237U CN 201721586391 U CN201721586391 U CN 201721586391U CN 207397237 U CN207397237 U CN 207397237U
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Abstract
Multiple main frames, including USB control units and video control unit, are connected by a kind of KVM switch by USB control units with several USB, are connected multiple main frames with a display by video control unit；USB control units include high speed USB variable connector and hub HUB, become two line D+ and D signals by hub HUB, the signal of this several USB then is transmitted transparently to corresponding host respectively under the switching of high speed USB variable connector；Video control unit includes high-speed video variable connector；The conformable display connection corresponding with the video port of each host of high-speed video variable connector, and vision signal of the timesharing switching from host, vision signal is output on display.
Description
Technical field
The utility model is related to a kind of KVM switch, its main application these needs of the heart, computer room in the database
The place of more hosts.
Background technology
For database hub, computer room these need the places of more hosts, if every all individually using a set of display,
Mouse-keyboard, then need great space, management is got up also very inconvenient.So KVM switcher just solves this well
A problem, i.e. a display, a set of mouse-keyboard pass through KVM switcher, you can each host of Time-sharing control greatly saves
About space, cost improves the efficiency of management.KVM is Keyboard (keyboard), Video (display), Mouse (mouse)
Abbreviation.The formal entitled KVM switch or KVM SWITCH of KVM switcher.KVM switcher, briefly, just
It is the computer for allowing system manager that multiple servers or host computer by one group of keyboard, display and mouse, can be controlled
Peripheral equipment, it means that only need a people that can be interacted with all computers, it certainly once can only be with an interaction.Switch
Expense except that can save multiple keyboards and display can also vacate the desk-top space of bigger.KVM switcher is generally used in
Have network and other server farm institutes of multiple computers, usually have in the case of these multiple stage computers but only there are one administrator or
Webmaster.The price of switch is from the $ 200 of eight computer ring system switch of control to the switching of 10 sun stations of control
The $ 2000 of device is differed.Bigger configuration overhead is bigger.
KVM switcher on the market at present, is all a display, and a set of mouse-keyboard controls multiple host, such as Fig. 1
It is shown.
The framework defect of this product is：
1) USB port of control terminal can only connect mouse and keyboard, it is not possible to connect other USB devices.
2) not strong for mouse-keyboard compatibility, for many multimedia mouses, especially game mouse keyboard has compatibility
Sex chromosome mosaicism.
3) products application scope, use environment are limited.
4) cost is high, is unfavorable for popularizing.
The content of the invention
The defects of to overcome the prior art, the technical problem to be solved by the present invention is to provide a kind of multicomputers to cut
Parallel operation can connect various USB devices, compatibility, favorable expandability to USB device, and products application scope is wide, adapts to various make
With environment, cost is low, is conducive to popularize, even if frequently being switched, will not to the video port of host or
Person's display damages.
The technical solution of the utility model is：This KVM switch is controlled including USB control units and video
Multiple main frames are connected by unit by USB control units with several USB, by video control unit by multiple main frames and one
A display connection；
USB control units include high speed USB variable connector and hub HUB, become two line D+ and D- by hub HUB
Then the signal of this several USB is transmitted transparently to corresponding master by signal respectively under the switching of high speed USB variable connector
Machine；
Video control unit includes high-speed video variable connector；High-speed video variable connector and each host
The corresponding conformable display connection of video port, and vision signal of the timesharing switching from host, will
Vision signal is output on display.
Multiple main frames are connected by the KVM switch by USB control units with several USB, pass through hub
HUB becomes two line D+ and D- signals, then respectively that the signal of this several USB is saturating under the switching of high speed USB variable connector
It is bright to be transferred to corresponding host；Therefore various USB devices can be connect, compatibility, favorable expandability to USB device, products application
Scope is wide, adapts to various use environments, and cost is low, is conducive to popularize.By video control unit by multiple main frames
It is connected with a display, the conformable display connection corresponding with the video port of each host of high-speed video variable connector, and
Timesharing switches the vision signal from host, and vision signal is output on display；Therefore by timesharing switching from host
Vision signal, on the one hand can ensure that vision signal display is smooth, host and display are also on the other hand subjected to thorough object
Separation in reason accordingly even when frequently being switched, will not damage the video port or display of host.
Description of the drawings
Fig. 1 show the circuit block diagram of KVM switch according to prior art；
Fig. 2 is the schematic diagram of the design philosophy of the KVM switch of the utility model；
Fig. 3 is the circuit block diagram of the KVM switch of the utility model；
Fig. 4 is the input pattern signal schematic diagram of the controller of the utility model embodiment.
Specific embodiment
As shown in Figure 2,3, this KVM switch including USB control units and video control unit, passes through
Multiple main frames are connected by USB control units with several USB, are connected multiple main frames and a display by video control unit
It connects；
USB control units include high speed USB variable connector and hub HUB, are become by hub HUB
It is then respectively that this is several under the switching of high speed USB variable connector into two line D+ and D- signals
The signal of a USB is transmitted transparently to corresponding host；
Video control unit includes high-speed video variable connector；High-speed video variable connector and each host
The corresponding conformable display connection of video port, and vision signal of the timesharing switching from host, will
Vision signal is output on display.
Multiple main frames are connected by the KVM switch by USB control units with several USB, pass through hub
HUB becomes two line D+ and D- signals, then respectively that the signal of this several USB is saturating under the switching of high speed USB variable connector
It is bright to be transferred to corresponding host；Therefore various USB devices can be connect, compatibility, favorable expandability to USB device, products application
Scope is wide, adapts to various use environments, and cost is low, is conducive to popularize.By video control unit by multiple main frames
It is connected with a display, the conformable display connection corresponding with the video port of each host of high-speed video variable connector, and
Timesharing switches the vision signal from host, and vision signal is output on display；Therefore by timesharing switching from host
Vision signal, on the one hand can ensure that vision signal display is smooth, host and display are also on the other hand subjected to thorough object
Separation in reason accordingly even when frequently being switched, will not damage the video port or display of host.
In addition, the USB includes：USB mouse, USB keyboard, USB flash disk, USB printer, USB card reader.
In addition, as shown in Fig. 2, the KVM switch further includes controller, connection high speed USB variable connector and height
Fast multi-channel video switch, and to be switched by high speed USB variable connector and the selection of high-speed video variable connector according to input signal
Host.
In addition, as shown in figure 4, the controller is received using IR remote controller, 2.4G remote controlers, button or serial ports
Input signal.
In addition, the video control unit includes high-speed video variable connector, rgb signal caching (for caching color letter
Number), HV signals caching (for cache row field signal), DDC signals caching (for digital controlled signal), high-speed video multichannel is opened
Conformable display connection corresponding with the video port of each host, and vision signal of the timesharing switching from host are closed, is passed through
It is output to after rgb signal caching, HV signals caching, DDC signals caching on display.By being carried out respectively to video signal portions
On the one hand caching process can ensure that vision signal display is smooth, host and display also on the other hand are carried out thorough physics
On separation, accordingly even when frequently being switched, the video port or display of host will not be damaged, than
Such as display or host can be damaged back and forth between the video port and display of host to avoid electrostatic.
The advantages of KVM switch, is as follows：
1) by two USB ports of KVM switcher control terminal, mouse-keyboard can only be connect originally, be expanded into multiple and each
The equipment that various USB interfaces can be connect, greatly extends the purposes of KVM switcher, is shared for example, can be used for office
The USB devices such as USB printer, USB hard disks can be also widely applied to multi-media classroom teaching.
2) to the compatibility of USB device, favorable expandability.Either for common mouse-keyboard or multimedia game
Mouse-keyboard, as long as the mouse-keyboard for the USB interface that host can identify, then the KVM switcher can also be compatible with use.
And the USB mouse keyboard for upgrading later after, can be used normally as long as the mouse-keyboard is directly connected on host,
So the KVM switcher is also by compatibility as before.
3) cost is low, is conducive to popularize.Compared to KVM switcher on the market, USB interface can only be supported
Mouse-keyboard, the KVM switcher use transparent transmission mode, do not carry out interference transmission to usb protocol, ensure that USB communications
It is smooth.
4) in transmission of video part, signal caching is added between high-speed video switch and display, for host side
Vision signal and display carried out effective isolation buffer so that transmission of video is more smooth, and can effectively remove
Electrostatic effect protects display and host.
5) in transmission of video part, conformable display is connected to host for simulating a display, especially when KVM connects
When being connected to notebook, even if KVM is switched to other ports, then for the notebook, can also continue output vision signal, this is just
It can be to avoid notebook because switching and frequent blank screen, splashette.
6) control mode uses modularized design, and flexible and changeable, autgmentability is strong, for different occasions, demand, Ke Yifang
Just increase changes control mode, achievees the purpose that meet customer need.
The above is only the preferred embodiment of the utility model, not makees limit in any form to the utility model
System, every any simple modification, equivalent change and modification made according to the technical essence of the utility model to above example,
Still belong to the protection domain of technical solutions of the utility model.
Claims (5)
1. a kind of KVM switch, it is characterised in that：It includes USB control units and video control unit, is controlled by USB
Multiple main frames are connected by unit processed with several USB, are connected multiple main frames with a display by video control unit；
USB control units include high speed USB variable connector and hub HUB, become two line D+ and D- letters by hub HUB
Number, the signal of this several USB is then transmitted transparently to corresponding host respectively under the switching of high speed USB variable connector；
Video control unit includes high-speed video variable connector；High-speed video variable connector is corresponding with the video port of each host
Conformable display connection, and timesharing switching the vision signal from host, vision signal is output on display.
2. KVM switch according to claim 1, it is characterised in that：The USB includes：USB mouse, USB key
Disk, USB flash disk, USB printer, USB card reader.
3. KVM switch according to claim 2, it is characterised in that：The KVM switch further includes control
Device connects high speed USB variable connector and high-speed video variable connector, and passes through high speed USB variable connector according to input signal
The host to be switched is selected with high-speed video variable connector.
4. KVM switch according to claim 3, it is characterised in that：The controller uses IR remote controller,
2.4G remote controlers, button or serial ports receive input signal.
5. KVM switch according to claim 1, it is characterised in that：The video control unit includes regarding at a high speed
Frequency variable connector, rgb signal caching, HV signals caching, DDC signals caching, high-speed video variable connector are regarded with each host
The corresponding conformable display connection in frequency port, and vision signal of the timesharing switching from host, are cached, HV letters by rgb signal
Number caching, DDC signals caching after be output on display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721586391.5U CN207397237U (en) | 2017-11-24 | 2017-11-24 | A kind of KVM switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721586391.5U CN207397237U (en) | 2017-11-24 | 2017-11-24 | A kind of KVM switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207397237U true CN207397237U (en) | 2018-05-22 |
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| CN201721586391.5U Active CN207397237U (en) | 2017-11-24 | 2017-11-24 | A kind of KVM switch |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588711A (en) * | 2019-10-09 | 2019-12-20 | 哈尔滨市科佳通用机电股份有限公司 | A vehicle-mounted railway track detection system based on a comprehensive monitoring device for locomotive safety information |
| CN111522766A (en) * | 2020-04-27 | 2020-08-11 | 浙江大华技术股份有限公司 | Communication system, method, device, equipment and storage medium thereof |
| CN111796755A (en) * | 2020-07-03 | 2020-10-20 | 深圳市创新胜为科技有限公司 | KVM control system and KVM display switching control method |
| CN111966317A (en) * | 2020-09-28 | 2020-11-20 | 深圳市春盛海科技有限公司 | Video switching equipment |
| CN111994019A (en) * | 2020-09-01 | 2020-11-27 | 驭势科技（北京）有限公司 | Data one-to-two conversion circuit, system and driverless vehicle |
| CN112905142A (en) * | 2021-02-02 | 2021-06-04 | 天津大港油田滨海新能油气有限公司 | Multifunctional simulation platform for hardware simulation and infrared technology structure |
| CN115499609A (en) * | 2022-09-14 | 2022-12-20 | 深圳市锐宝智联信息有限公司 | Display signal switching method and system applied to industrial computer |
| CN115951788A (en) * | 2022-06-30 | 2023-04-11 | 慧与发展有限责任合伙企业 | Keyboard/video/monitor switcher for server without integrated video controller |
-
2017
- 2017-11-24 CN CN201721586391.5U patent/CN207397237U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588711A (en) * | 2019-10-09 | 2019-12-20 | 哈尔滨市科佳通用机电股份有限公司 | A vehicle-mounted railway track detection system based on a comprehensive monitoring device for locomotive safety information |
| CN111522766A (en) * | 2020-04-27 | 2020-08-11 | 浙江大华技术股份有限公司 | Communication system, method, device, equipment and storage medium thereof |
| CN111796755A (en) * | 2020-07-03 | 2020-10-20 | 深圳市创新胜为科技有限公司 | KVM control system and KVM display switching control method |
| CN111994019A (en) * | 2020-09-01 | 2020-11-27 | 驭势科技（北京）有限公司 | Data one-to-two conversion circuit, system and driverless vehicle |
| CN111966317A (en) * | 2020-09-28 | 2020-11-20 | 深圳市春盛海科技有限公司 | Video switching equipment |
| CN112905142A (en) * | 2021-02-02 | 2021-06-04 | 天津大港油田滨海新能油气有限公司 | Multifunctional simulation platform for hardware simulation and infrared technology structure |
| CN115951788A (en) * | 2022-06-30 | 2023-04-11 | 慧与发展有限责任合伙企业 | Keyboard/video/monitor switcher for server without integrated video controller |
| CN115951788B (en) * | 2022-06-30 | 2024-03-08 | 慧与发展有限责任合伙企业 | Apparatus, computer-implemented method, and storage medium for video output |
| CN115499609A (en) * | 2022-09-14 | 2022-12-20 | 深圳市锐宝智联信息有限公司 | Display signal switching method and system applied to industrial computer |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190530 Address after: 518000 Guanlan Street, Longhua District, Shenzhen City, Guangdong Province, Second Floor of Building B, Jinxiongda Science Park, Guanlan Huanguan South Road Patentee after: Shenzhen Innovation Shengwei Technology Co., Ltd. Address before: 100085 Beijing Haidian District, Shangdi 10th Street, No. 1 Courtyard, Building 5, 6th Floor 608 Patentee before: Beijing Rui Ze wins for Science and Technology Ltd. |