CN103543972A - KVM switcher indicating device and KVM switching system - Google Patents
KVM switcher indicating device and KVM switching system Download PDFInfo
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- CN103543972A CN103543972A CN201210240374.1A CN201210240374A CN103543972A CN 103543972 A CN103543972 A CN 103543972A CN 201210240374 A CN201210240374 A CN 201210240374A CN 103543972 A CN103543972 A CN 103543972A
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Abstract
Provided is a KVM switcher indicating device. The USB interface of a KVM switcher is electrically connected to the USB interface of a computer through a USB cable. The KVM switcher indicating device is electrically connected to the USB cable connected with the USB interface of the KVM switcher and the USB interface of the computer. The KVM switcher indicating device comprises an LED and a loudspeaker. When the KVM switcher is switched to be connected to the computer, the KVM switcher indicating device senses the electrical level value of the USB interface through the sensing unit of the KVM switcher indicating device, and the execution unit of the KVM switcher indicating device judges the fact that the electrical level value meets a trigger value and triggers an output unit to output currents to enable the LED to emit light and the loudspeaker to make sounds so that the current connecting state of the KVM switcher and the computer can be recognized. In addition, the invention provides a KVM switching system using the KVM switcher indicating device.
Description
Technical field
The present invention relates to a kind of many computing machine KVM switch indicating devices and KVM switched system, relate in particular to a kind of KVM switch indicating device and KVM switched system that is connected to computing machine USB port.
Background technology
In machine room or laboratory, conventionally need the collaborative work of many computing machines to complete some complicated calculation tasks.Conventionally many computing machines can share a set of peripherals, and for example keyboard, display and mouse, so that keeper controls.Conventionally use a multicomputer keyboard, display, mouse (Keyboard, Video, Mouse, KVM) switch to realize this cover peripherals and be connected to the wherein switching between each computing machine of these many computing machines.In these many computing machines a certain broken down and need to overhaul its hardware time, need to find out the current computing machine being connected to this KVM switch, generally need to remove to find along with the line bundle connecting the computing machine of current connection.Yet the line bundle of connection is general numerous innumerable and disordered, it is very inconvenient by manpower, to go to find, and process is loaded down with trivial details, waste of manpower and time.
Summary of the invention
In view of this, be necessary to provide a kind of KVM switch indicating device that can indicate fast current connected computing machine.
Separately, be also necessary to provide a kind of KVM switched system of applying above-mentioned KVM switch indicating device.
A switch indicating device, for a KVM switch, the USB interface of this KVM switch is electrically connected to the USB interface of a computing machine by USB cable.Described KVM switch indicating device is electrically connected on this USB cable, and this KVM switch indicating device comprises state indicating device, for sending indicator signal; Detecting unit, is electrically connected on this USB cable, for detect the level value of this USB interface of computer by this USB cable; Setting unit, for arranging the trigger value of an incoming level detecting; Output unit, is electrically connected at this state indicating device, for exporting control signal for this state indicating device work; Performance element, judges whether the level value that this detecting unit detects meets this trigger value, triggers this output unit output control signal if meet; When this KVM switch is connected to this computing machine, this detecting unit is detected the level value of the respective pins of this USB interface, this performance element judges whether this level value meets this trigger value, and meet under the condition of this trigger value and trigger this output unit output control signal so that this state indicating device sends indicator signal, for the connection status of the current KVM switch of identification and computing machine in the level value of detecting.
A kind of KVM switched system, comprise KVM switch, opertaing device and many computing machines, this KVM switch connects respectively this opertaing device and many computing machines, and this opertaing device of changeable connection is to arbitrary computing machine, KVM switch comprises a plurality of USB interface, and a plurality of USB interface of KVM switch are electrically connected to respectively the USB interface of these many computing machines by many USB cables.This KVM switched system also comprises a plurality of KVM switch indicating devices, each this KVM switch indicating device is connected on the USB cable that connects the USB interface of a computing machine and the USB interface of this KVM switch, this KVM switch indicating device comprises state indicating device, for sending indicator signal; Detecting unit, is electrically connected on this USB cable, for detect the level value of this USB interface of computer by this USB cable; Setting unit, for arranging the trigger value of an incoming level detecting; Output unit, is electrically connected at this state indicating device, for output current, for this state indicating device, works; Performance element, judges whether the level value that this detecting unit detects meets this trigger value, triggers this output unit output control signal if meet; When this KVM switch is connected to wherein a computing machine, this detecting unit is detected the level value of the respective pins of this USB interface, this performance element judges whether this level value meets this trigger value, and meet under the condition of this trigger value and trigger this output unit output control signal so that this state indicating device sends indicator signal, for the current computing machine being connected with this KVM switch of identification in the level value of detecting.
Above-mentioned KVM switch indicating device is electrically connected on the USB cable that connects the USB interface of this KVM switch and the USB interface of this computing machine, by detecting that the level of relevant pin of the USB interface of this computing machine changes, correspondingly make prompting, make operator can conveniently observe the computing machine of the current connection of this KVM switch.This KVM switch indicating device is simple in structure, convenient connection, has preferably practicality.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the KVM switch indicating device of better embodiment of the present invention is applied to KVM switched system;
Fig. 2 is the schematic diagram that the KVM switch indicating device of better embodiment of the present invention is connected in KVM switched system.
Fig. 3 is the functional block diagram of the KVM switch indicating device of better embodiment of the present invention.
Main element symbol description
| |
100 |
| |
110 |
| |
101 |
| |
102 |
| |
103 |
| |
104 |
| KVM switched system | 200 |
| |
20 |
| First interface | 22 |
| The |
24 |
| Opertaing device | 40 |
| Display | 42 |
| Keyboard | 44 |
| Mouse | 46 |
| |
60 |
| |
120 |
| |
140 |
| Power pins | Vcc |
| Minus tolerance sub-signal pin | D- |
| Positive differential signal pins | D+ |
| Grounding pin | GND |
| Output pin | P1、P2、P3、P4 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1, better embodiment of the present invention provides a kind of multicomputer keyboard, display, mouse (Keyboard, Video, Mouse, KVM) switch indicating device 100, and this KVM switch indicating device 100 is applied in KVM switched system 200.
Described KVM switched system 200 comprises KVM switch 20, opertaing device 40, many computing machines 60 and a plurality of KVM switch indicating device 100.This opertaing device 40 is electrically connected to this KVM switch 20.This KVM switch 20 is electrically connected to this many computing machines 60 by these connection cable correspondences of following respectively more, the plurality of KVM switch indicating device 100 is corresponding being electrically connected on the cable that connects these many computing machines 60 one by one, and this KVM switch 20 is electrically connected to one of them KVM switch indicating device 100 and a computing machine 60 for switching this opertaing device 40.This opertaing device 40 is for controlling current connected computing machine 60, and this KVM switch indicating device 100 is used to indicate the computing machine 60 that current switching is connected to this KVM switch 20.
Described KVM switch 20 comprises that one group for being connected to the first interface 22 of this opertaing device 40 and a plurality of for being connected to second interface 24 of these many computing machines 60.In the present embodiment, this group first interface 22 comprises VGA(Video Graphics Array) interface, digital visual interface (Digital Visual Interface, DVI) and USB (universal serial bus) (Universal Serial Bus, USB) interface.This KVM switch 20 can be connected to the computer peripherals such as display, keyboard and mouse by this first interface 22.The plurality of the second interface 24 is arranged on this KVM switch 20 successively, and each this second interface 24 includes VGA interface, DVI interface and USB interface.This KVM switch 20 can be connected to a computing machine 60 by this second interface 24, and the VGA interface of this KVM switch 20 or DVI interface and USB interface are connected to the interface on computing machine 60 by corresponding cable correspondence.
Be appreciated that when this KVM switch 20 is connected to display and computing machine 60, can be connected to the video card interface on display or computing machine by one of VGA interface or DVI interface.This KVM switch 20 arranges the interface of two kinds of standards for coordinating the display with distinct interface standard.Can certainly be for Simplicity in Design, and a VGA interface is only set, after being connected to while having the display of DVI interface or video card, by adapter, DVI interface being changed into VGA interface, need are connected to this KVM switch 20.
Described opertaing device 40 is the computer peripheral that comprises a group display equipment 42, keyboard 44 and mouse 46.This display 42 is electrically connected to VGA interface or the DVI interface of this KVM switch 20 by corresponding cable, this keyboard 44 and mouse 46 are electrically connected to the USB port of this KVM switch 20 by corresponding cable.
Described in each, computing machine 60 is electrically connected to VGA interface or the DVI interface of this KVM switch 20 by corresponding cable, and USB interface.Described in each, KVM switch indicating device 100 is electrically connected on the cable that connects a USB interface of KVM switch 20 and the USB interface of a computing machine 60.This KVM switch 20 can connect many computing machines 60 by its a plurality of the second interfaces 24 simultaneously, and computing machine 60 of every connection connects a KVM switch indicating device 100 simultaneously, the connection status of corresponding its computing machine connecting 60 of indication of each KVM switch indicating device 100.Changeable this opertaing device 40 of this KVM switch 20 is connected to arbitrary computing machine 60, the computing machine 60 that this computing machine 60 of KVM switch indicating device 100 indications being connected with this computing machine 60 connects for current switching, the computing machine 60 that this opertaing device 40 can connect its current switching is controlled.
See also Fig. 2, described KVM switch indicating device 100 is electrically connected on the USB cable that connects the USB interface of this KVM switch 20 and the USB interface of this computing machine 60.The USB interface of the USB interface of this KVM switch 20 and computing machine 60 includes power pins Vcc, minus tolerance sub-signal pin D-, positive differential signal pins D+ and grounding pin GND, and by USB cable, docks one by one respectively.This KVM switch indicating device 100 comprises main control chip 110 and a state indicating device.This main control chip 110 comprises a plurality of detecting pins and a plurality of output pin P1, P2, P3 and P4.In the present embodiment, the plurality of detecting pin comprises power pins Vcc, minus tolerance sub-signal pin D-, positive differential signal pins D+, grounding pin GND.The power pins Vcc of this main control chip 110, minus tolerance sub-signal pin D-, positive differential signal pins D+ and grounding pin GND are electrically connected to respectively power pins Vcc, minus tolerance sub-signal pin D-, positive differential signal pins D+ and the grounding pin GND of the USB interface of computing machine 60 one by one.This state indicating device comprises a light emitting diode (Light Emitting Diode, LED) 120 and one loudspeaker 140, and this LED120 is electrically connected to this output pin P1 and P2, and this loudspeaker 140 is electrically connected to output pin P3 and P4.
See also Fig. 2 and Fig. 3, described main control chip 110 also comprises setting unit 101, detecting unit 102, performance element 103 and output unit 104.This detecting unit 102 is electrically connected to this minus tolerance sub-signal pin D-and positive differential signal pins D+, and the level of the USB interface that it connects by these pin detectings changes.This setting unit 101 is for setting in advance the trigger value of an incoming level.This output unit 104 is electrically connected to the plurality of output pin P1, P2, P3 and P4, for working for this LED120 and loudspeaker 140 by these output pin output currents.This performance element 103 is for judging whether the level that this detecting unit 102 detects meets the trigger value that this sets in advance, and whether decision triggers this output unit 104 output currents.
This main control chip 110 can obtain working power from the USB interface of this computing machine 60 by this power pins Vcc, and in the present embodiment, the voltage of this power pins Vcc is 5 volts.In the present embodiment, the trigger value that this setting unit 101 sets in advance detects a low level for this minus tolerance sub-signal pin D-, and this positive differential signal pins D+ detects a high level.The level of this detecting unit 102 by detecting minus tolerance sub-signal pin D-and positive differential signal pins D+ changes and decides whether output current of output unit 104, and then determines the duty of this LED120 and loudspeaker 140.When these KVM switch 20 switchings are not attached to this current computer 60, the USB interface of this computing machine 60 is in park mode, and now its minus tolerance sub-signal pin D-is high level, and positive differential signal pins D+ is low level.This detecting unit 102 by minus tolerance sub-signal pin D-and positive differential signal pins D+ respectively correspondence detect as high level and low level, these performance element 103 these level that detect of judgement do not meet predetermined value, the now equal no current output of output pin P1, P2, P3 and the P4 of this main control chip 110, this LED120 is the state not working, and this loudspeaker 140 is mute state.When these KVM switch 20 switchings are connected to this current computer 60, the USB interface of this computing machine 60 is in recovery pattern, and now its minus tolerance sub-signal pin D-is low level, and positive differential signal pins D+ is high level.This detecting unit 102 by this minus tolerance sub-signal pin D-and positive differential signal pins D+ respectively correspondence detect as low level and high level, these performance element 103 these level of judgement meet described trigger value, now this performance element 103 triggers this output unit 104 by this output pin P1, P2, P3 and P4 output services electric current, this LED120 is luminous and maintain one period of predetermined time of this bright state, and this loudspeaker 140 sends sound and maintains one period of predetermined time of this sound state.Thereby can make operator identify from vision and the sense of hearing aspect computing machine 60 that the current switching of this KVM switch 20 is connected to.
KVM switch indicating device 100 of the present invention is electrically connected on the USB cable that connects the USB interface of this KVM switch 20 and the USB interface of this computing machine 60, by detecting that the level of relevant pin of the USB interface of this computing machine 60 changes, correspondingly make prompting, make operator can conveniently observe the computing machine 60 of these KVM switch 20 current connections.This KVM switch indicating device 100 is simple in structure, convenient connection, has preferably practicality.
Claims (10)
1. a KVM switch indicating device, for a KVM switch, the USB interface of this KVM switch is electrically connected to the USB interface of a computing machine by USB cable, it is characterized in that: described KVM switch indicating device is electrically connected on this USB cable, and this KVM switch indicating device comprises:
State indicating device, for sending indicator signal;
Detecting unit, is electrically connected on this USB cable, for detect the level value of this USB interface of computer by this USB cable;
Setting unit, for arranging the trigger value of an incoming level detecting;
Output unit, is electrically connected at this state indicating device, for exporting control signal for this state indicating device work; And
Performance element, judges whether the level value that this detecting unit detects meets this trigger value, triggers this output unit output control signal if meet;
When this KVM switch is connected to this computing machine, this detecting unit is detected the level value of the respective pins of this USB interface, this performance element judges whether this level value meets this trigger value, and meet under the condition of this trigger value and trigger this output unit output control signal so that this state indicating device sends indicator signal, for the connection status of the current KVM switch of identification and computing machine in the level value of detecting.
2. KVM switch indicating device as claimed in claim 1, it is characterized in that: described KVM switch indicating device also comprises power pins, minus tolerance sub-signal pin, positive differential signal pins and grounding pin, wherein this minus tolerance sub-signal pin and positive differential signal pins are electrically connected to this detecting unit, these pins are corresponding power pins, minus tolerance sub-signal pin, positive differential signal pins and the grounding pin that is electrically connected at this USB interface one by one respectively, and the power pins of this KVM switch indicating device is obtained working power from the power pins of this USB interface.
3. KVM switch indicating device as claimed in claim 2, it is characterized in that: described KVM switch indicating device also comprises a plurality of output pins that are electrically connected to this output unit, this state indicating device comprises LED and loudspeaker, wherein two output pins are electrically connected at this LED, and another two output pins are electrically connected at this loudspeaker.
4. KVM switch indicating device as claimed in claim 3, it is characterized in that: when described detecting unit detects this minus tolerance sub-signal pin, be low level, when positive differential signal pins is high level, this performance element judgement meets this trigger value, and trigger this output unit by the plurality of output pin output current, for luminous and this loudspeaker of this LED, send the sound, when detecting this minus tolerance sub-signal pin, it is high level, when positive differential signal pins is low level, the plurality of output pin no current output.
5. a KVM switched system, comprise KVM switch, opertaing device and many computing machines, this KVM switch connects respectively this opertaing device and many computing machines, and this opertaing device of changeable connection is to arbitrary computing machine, KVM switch comprises a plurality of USB interface, a plurality of USB interface of KVM switch are electrically connected to respectively the USB interface of these many computing machines by many USB cables, it is characterized in that: this KVM switched system also comprises a plurality of KVM switch indicating devices, each this KVM switch indicating device is connected on the USB cable that connects the USB interface of a computing machine and the USB interface of this KVM switch, this KVM switch indicating device comprises:
State indicating device, for sending indicator signal;
Detecting unit, is electrically connected on this USB cable, for detect the level value of this USB interface of computer by this USB cable;
Setting unit, for arranging the trigger value of an incoming level detecting;
Output unit, is electrically connected at this state indicating device, for output current, for this state indicating device, works; And
Performance element, judges whether the level value that this detecting unit detects meets this trigger value, triggers this output unit output control signal if meet;
When this KVM switch is connected to wherein a computing machine, this detecting unit is detected the level value of the respective pins of this USB interface, this performance element judges whether this level value meets this trigger value, and meet under the condition of this trigger value and trigger this output unit output control signal so that this state indicating device sends indicator signal, for the current computing machine being connected with this KVM switch of identification in the level value of detecting.
6. KVM switched system as claimed in claim 5, it is characterized in that: described KVM switch indicating device also comprises power pins, minus tolerance sub-signal pin, positive differential signal pins and grounding pin, wherein this minus tolerance sub-signal pin and positive differential signal pins are electrically connected to this detecting unit, these pins are corresponding power pins, minus tolerance sub-signal pin, positive differential signal pins and the grounding pin that is electrically connected at this USB interface one by one respectively, and the power pins of this KVM switch indicating device is obtained working power from the power pins of this USB interface.
7. KVM switched system as claimed in claim 6, it is characterized in that: described KVM switch indicating device also comprises a plurality of output pins that are electrically connected to this output unit, this state indicating device comprises LED and loudspeaker, wherein two output pins are electrically connected at this LED, and another two output pins are electrically connected at this loudspeaker.
8. KVM switched system as claimed in claim 7, it is characterized in that: when described detecting unit detects this minus tolerance sub-signal pin, be low level, when positive differential signal pins is high level, this performance element judgement meets this trigger value, and trigger this output unit by the plurality of output pin output current, for this LED, luminous and this loudspeaker sends the sound, when detecting this minus tolerance sub-signal pin, is high level, when positive differential signal pins is low level, the plurality of output pin no current output.
9. KVM switched system as claimed in claim 5, it is characterized in that: described KVM switch comprises first interface and a plurality of the second interface, this KVM switch connects this opertaing device by this first interface, by the plurality of the second interface, connect respectively this many computing machines, this first interface and the second interface include VGA interface, DVI interface and this USB interface.
10. KVM switched system as claimed in claim 9, it is characterized in that: described opertaing device comprises display, keyboard and mouse, this display is connected to this KVM switch by this VGA interface or DVI interface, this keyboard and MouseAcross are crossed this USB interface and are connected to this KVM switch, and these many computing machines share this opertaing device by this KVM switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210240374.1A CN103543972A (en) | 2012-07-12 | 2012-07-12 | KVM switcher indicating device and KVM switching system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210240374.1A CN103543972A (en) | 2012-07-12 | 2012-07-12 | KVM switcher indicating device and KVM switching system |
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| CN103543972A true CN103543972A (en) | 2014-01-29 |
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| CN201210240374.1A Pending CN103543972A (en) | 2012-07-12 | 2012-07-12 | KVM switcher indicating device and KVM switching system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571583A (en) * | 2014-12-26 | 2015-04-29 | 北京和利时系统工程有限公司 | Method and device for switching KVM (Keyboard Video Mouse) |
| CN105068906A (en) * | 2015-08-26 | 2015-11-18 | 浪潮集团有限公司 | Server state detection method applied to KVM system |
| CN107479845A (en) * | 2017-09-08 | 2017-12-15 | 广州视源电子科技股份有限公司 | Display apparatus and control method thereof |
| CN113126790A (en) * | 2019-12-27 | 2021-07-16 | 宏正自动科技股份有限公司 | Switching device and method of operating the same |
-
2012
- 2012-07-12 CN CN201210240374.1A patent/CN103543972A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571583A (en) * | 2014-12-26 | 2015-04-29 | 北京和利时系统工程有限公司 | Method and device for switching KVM (Keyboard Video Mouse) |
| CN105068906A (en) * | 2015-08-26 | 2015-11-18 | 浪潮集团有限公司 | Server state detection method applied to KVM system |
| CN107479845A (en) * | 2017-09-08 | 2017-12-15 | 广州视源电子科技股份有限公司 | Display apparatus and control method thereof |
| CN113126790A (en) * | 2019-12-27 | 2021-07-16 | 宏正自动科技股份有限公司 | Switching device and method of operating the same |
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Application publication date: 20140129 |