CN102087589A - Remote management device capable of detecting state of controlled computer - Google Patents
Remote management device capable of detecting state of controlled computer Download PDFInfo
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- CN102087589A CN102087589A CN2009102538431A CN200910253843A CN102087589A CN 102087589 A CN102087589 A CN 102087589A CN 2009102538431 A CN2009102538431 A CN 2009102538431A CN 200910253843 A CN200910253843 A CN 200910253843A CN 102087589 A CN102087589 A CN 102087589A
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Abstract
The invention provides a remote management device capable of detecting the state of a controlled computer. The invention provides a management system for coupling a central control device to one or more controlled computers. The management device comprises a multi-computer switch, a USB (Universal Serial Bus) interface and a USB device controller, wherein the multi-computer switch is coupled to the central control device, the USB interface is coupled to a USB port of the controlled computer, the USB device controller is coupled to the multi-computer switch and communicated with a USB host controller of the controlled computer through the USB interface, and the multi-computer switch detects the state of the controlled computer according to a USB request instruction which is received by the USB device controller from the USB host controller.
Description
Technical field
The present invention is meant a kind of long-distance management device that detects the controlled computer state especially about a kind of long-distance management device.
Background technology
Use KVM switch (Keyboard-Video-Mouse Switch; KVM Switch) one group of control device (for example a group of keyboard, screen and mouse) can be connected to many long-range main frames through a KVM switch switches respectively and operation.Yet because each main frame is far away apart from the operator, when the main frame that connects is many more, the current state that operator's desire is grasped each main frame is difficulty all the more.Therefore, in traditional technology, use the method for a kind of autoscan (Auto-scan) to be suggested.As shown in Figure 1, in the middle of a multicomputer switch system, all controlled computers 12 that one KVM switch 11 can scan its all connectivity port in regular turn and connected, to be presented on from the image of controlled computer 12 on the screen of control device 15 in regular turn based on the signal of video signal 13 that is received then, and allow user 14 can observe the state of all controlled computers 12.In scanning process, must switch in order in the middle of the KVM switch 11, to obtain the signal of video signal of all controlled computers 12.
Yet, because this mode that obtains the signal of video signal of controlled computer is to carry out with P-SCAN, so traditional autoscan technology once only can be observed the state of a controlled computer, even add the technology of divided frame (picture-in-picture) in the middle of KVM switch, the quantity of each observable controlled computer is restriction to some extent also.
In addition, when being in dormant state or off-mode as if a certain controlled computer 12, the user can't observe the state of this controlled computer 12.This is because controlled computer 12 this moment can't output image signal 13, so user 14 can't judge that this controlled computer 12 is to be in dormant state or off-mode, must switch platform controlled computer 12 so far, the signal of sending keyboard or mouse then wakes this controlled computer 12 to receive its signal of video signal 13 up.
Moreover, though traditional " intelligent platform management interface " technology (Intelligent Platform Management Interface; IPMI) technology also can detect the state of controlled computer, but on the mainboard of controlled computer a baseboard management controller (Baseboard Management Controller) must be installed in addition, and controlled computer also needs tool one to be equipped with network interface, to send the IPMI correlation detection signal to supvr via network.
Summary of the invention
According to conception of the present invention, a kind of management system is proposed, in order to a control device is coupled at least one controlled computer, this management system comprises a KVM switch at least, this KVM switch comprises a USB (universal serial bus) (USB) interface, in order to couple a USB port of this controlled computer, this KVM switch is coupled to this control device; An and USB Setup Controller, be coupled to this KVM switch, and carry out communication via a usb host controller of this USB interface and this controlled computer, wherein this KVM switch is detected a state of this controlled computer according to what this USB Setup Controller received from a USB request instruction of this usb host controller.
According to another conception of the present invention, a kind of management system is proposed, in order to a control device is coupled at least one controlled computer, this management system comprises a KVM switch at least, is coupled to this control device; One breakout box, in order to one of this controlled computer is coupled to this KVM switch, this breakout box comprises a housing more at least; One USB (universal serial bus) (USB) interface is in order to couple a usb connecting port of this controlled computer; And a video conversion unit, be arranged in this housing, be converted to a differential signal of video signal in order to a single-ended signal of video signal, and should be sent to this KVM switch by differential signal of video signal this controlled computer output; One USB Setup Controller, be arranged in this housing, usb host controller via this USB interface and this controlled computer carries out communication, and wherein this KVM switch can detect a state of this controlled computer from a USB request instruction of this usb host controller according to what this USB Setup Controller was received.
According to another conception of the present invention, a kind of method that detects at least one controlled computer state is proposed, this method is executed in the long-distance management system, this long-distance management system comprises a long-distance management device and at least one breakout box, and this method comprises the following step at least: via this at least one breakout box this long-distance management device is coupled to this at least one controlled computer; With this at least one breakout box this at least one controlled computer is carried out one and check the action of instructing; Judge a state of this at least one controlled computer according to this action.
According to another conception of the present invention, a kind of method that detects at least one controlled computer state is proposed, this method is executed in the long-distance management system, this long-distance management system comprises a long-distance management device and at least one breakout box, and this method comprises the following steps: via this at least one breakout box this long-distance management device to be coupled to this at least one controlled computer; With this at least one breakout box this at least one controlled computer is carried out a USB and enumerate action; According to a USB (universal serial bus) (USB) request instruction that is received in this USB enumeration process, judge a state of this at least one controlled computer from this at least one controlled computer.
Description of drawings
Fig. 1: traditional multicomputer switch system scans synoptic diagram.
Fig. 2 A: long-distance management system synoptic diagram of the present invention.
Fig. 2 B: breakout box organigram of the present invention.
Fig. 3 A: state decision flow chart of the present invention.
Fig. 3 B: state decision flow chart of the present invention.
Fig. 3 C: state decision flow chart of the present invention.
Fig. 4: long-distance management system synoptic diagram of the present invention.
[main element symbol description]
10 long-distance management systems
100 KVM switch
11 KVM switch
110 first interfaces
12 controlled computers
120 second interfaces
13 signal of video signal
130 the 3rd interfaces
135 the 4th interfaces
14 users
Control module in 140
The 15A keyboard
The 15B screen
The 15C mouse
150 control devices
16 networks
160 control computer
200 breakout boxs
210 housings
220 USB interface
225 image interfaces
230 video conversion unit
250 USB Setup Controllers
260 processors
270 RS485 transceivers
300 controlled computers
310 usb host controllers
Embodiment
This case can fully be understood by following embodiment explanation, make the personage who has the knack of this skill to finish it according to this, and the enforcement of right this case is not can be limited it by the following example to implement kenel.
The present invention uses USB (universal serial bus) (Universal Serial Bus, technology USB) uses the usb protocol of present institute standard to carry out being connected and communication of long-distance management system and controlled computer.
Below first embodiment of explanation this case sees also Fig. 2 A.The present invention discloses a kind of long-distance management system 10, comprises at least: a long-distance management device and one or more breakout box (adapter) 200.This long-distance management device can be a KVM switch 100.This KVM switch 100 is coupled to one group of control device 150 with its first interface 110, and this KVM switch 100 is coupled to many controlled computers 300 via these breakout boxs 200 in corresponding mode one to one with its second interface 120 again.These KVM switch 100 inside have an image switch and a signal path and arrange the unit, so, a user 14 can see through these control device 150 controls this one or many controlled computers 300.This control device 150 can comprise one group of keyboard 15A, screen 15B and mouse 15C, or the cursor control device of other kind.
This first interface 110 can comprise at least one keyboard/mouse connectivity port (for example PS/2 connector or USB connector) and an image connectivity port (for example VGA connector or DVI connector).This first interface 110 will export screen 15B to via an arrangement path from the signal of video signal of a certain controlled computer 300, and reception is from the control signal of keyboard 15A and mouse 15C, these control signals from keyboard 15A and mouse 15C then can be further processed, so that be sent to breakout box 200 in the mode that meets the RS485 standard.Thus, user 14 can see through these control device 150 controls this one or many controlled computers 300.This second interface can be a plurality of RJ-45 connectivity port, and more interconnects with a LAN cable (for example a CAT-5 cable or other similar twisted-pair feeder cable) between each RJ-45 connectivity port and each breakout box 200.
This breakout box 200 also can be described as server interface module (Server Interface Module; SIM), be mainly used to extend the distance between KVM switch 100 and the controlled computer 300, the feasible keyboard that reaches from control device 150 from the signal of video signal of controlled computer 300 can transfer to larger distance.So, be positioned at control device 150 preceding users 14 and just can carry out telemanagement controlled computer 300.
Shown in Fig. 2 B, each breakout box 200 comprises a housing 210, a USB interface 220, an image interface 225, a video conversion unit 230, a USB Setup Controller (Device Controller) 250, one processor 260 and a RS485 transceiver (transceiver) 270 more at least.
Wherein this USB interface 220 is in order to couple a USB port of this controlled computer 300; 230 of this video conversion unit are arranged in this housing, be converted to one differential (differential) signal of video signal after one single-ended (single-ended) signal of video signal of this controlled computer 300 being exported by its image port via image interface 225 receives, and make this differential signal of video signal be transferred into this KVM switch 100.In a preferred embodiment, video conversion unit 230 mainly is made up of at least one operational amplifier (Operational Amplifier).Processor 260 is sent to RS485 transceiver 270 after 250 receptions of USB Setup Controller are converted to the RS232 signal from the usb signal of controlled computer 300, RS485 transceiver 270 is converted to RS485 signal (differential wave) with this RS232 signal (single-ended signal) again, and the RS485 signal is sent to KVM switch 100.The ADM485 that this RS485 transceiver 270 can Analog Devices company be provided realizes.Via configuration of the present invention, the distance between KVM switch 100 and the breakout box 200 can reach 300 to 1000 feet.
This KVM switch 100 more optionally comprises an image compensation unit (not shown), because the twisted wire length of long Distance Transmission and CAT-5 cable does not wait the problem of the image quality decline that is caused, for example high-frequency signal is decayed and color-separated problems such as (Skew) in order to compensate.Chips such as EL9111, EL9112 that this image compensation unit (not shown) can be provided by your (Intersil) company of the special silicon of English and/or EL9115 are realized.
This USB Setup Controller (Device Controller) 250 also is arranged in this housing 210 equally, meet the relevant communication of usb protocol via this USB interface 220 and a usb host controller (Host Controller) 310 of this controlled computer 300, and will be sent to controlled computer 300 from the keyboard of control device 150 via this USB interface 220.Wherein this usb host controller 310 may be arranged in the south emigrant's chip on the mainboard of this controlled computer 300, or is a chip independently.The usb protocol of establishing criteria, in enumerating (enumeration) process, this USB Setup Controller 250 can be described unit with it and pass to usb host controller 310, and for example unit describe unit (device descriptor), configuration are described unit (configuration descriptor), interface describes unit (interface descriptor) and end points is described unit (endpoint descriptor).Foregoing description unit represents keyboard, mouse and/or other USB device (a for example virtual media) of control device.This USB Setup Controller 250 can see through a hub (for example be a Root Hub, do not show) foregoing description unit is passed to usb host controller 310.Usb host controller 310 can carry out configuration and setting to USB Setup Controller 250 according to these description units afterwards, and so breakout box 200 just can simulate a USB keyboard, a USB mouse and/or other USB device (a for example virtual media) on controlled computer 300.More comprise supplier's identification code (idVendor) and product ID (idProduct) in the middle of this unit describe unit.The operating system of controlled computer 300 can be selected corresponding driver according to this supplier's identification code and product ID, so that follow-uply can correctly control this USB keyboard, USB mouse and other USB device.
See also Fig. 3 A, when enumerating beginning (step S301), at first USB Setup Controller 250 is after usb host controller 310 has been reported all description units that need, console controller 310 can carry out configuration and setting (configure) to USB Setup Controller 250, and KVM switch 100 meetings this moment detect breakout box 200 and whether receive configuration (Set_Configuration) request instruction being set and agreement (Set_Protocol) request instruction (step S302) being set of usb protocol institute standard.When breakout box 200 was not received the Set_Configuration request instruction, KVM switch 100 can be judged as enumerated failure (step S308), the then release of Jian Ceing; When breakout box 200 is received the Set_Configuration request instruction, then continue to have judged whether to receive Set_Protocol request instruction (step S303).If breakout box 200 is received the Set_Configuration request instruction, do not receive the Set_Protocol request instruction but have, judge that then controlled computer 300 is in (step S304) in the OS state at present; If breakout box 200 is received Set_Configuration request instruction and Set_Protocol request instruction, judge that then controlled computer 300 is in BIOS state (step S305) at present.
Perhaps, judge whether controlled computer 300 is in OS state or BIOS state, more can be shown in the flow process of Fig. 3 B.Comprise more after the step S303 that one confirms the step (S306) of wValue field numerical value, wherein wValue is a field in the Set_Protocol request instruction.Therefore, when breakout box 200 is received the Set_Protocol request instruction, but the wValue field numerical value in the Set_Protocol request instruction is 1 o'clock, also judges that then controlled computer 300 is in (step S304) in the OS state at present; If the value of wValue field is not 1 (also being 0), judge that then controlled computer 300 is in (step S305) in the BIOS state at present.
For detecting the state of controlled computer 300, KVM switch 100 of the present invention can or be sent one " reconnecting " instruction to each breakout box 200 (step S309) automatically according to user's demand, this " reconnects " instruction can make USB Setup Controller 250 earlier remove (detach) and then once connect (attach) on usb bus seemingly, makes the enumeration process of carrying out a usb protocol institute standard between the USB Setup Controller 250 of the usb host controller 310 of controlled computer 300 and breakout box 200 again.Basically, this instruction that reconnects is meant a kind of virtual Plug Action (Plug-In and Plug-Out) between breakout box 200 and controlled computer 300, that is to say that emulation breakout box 200 is extracted the action of the USB port of inserting controlled computer 300 again earlier.Therefore, after USB Setup Controller 250 and usb host controller 310 reconnected, USB Setup Controller 250 functions of breakout box 200 began to activate, and also will once enumerate action again with the usb host controller 310 of controlled computer 300.
In addition, judge whether controlled computer 300 is in dormant state or off-mode, can be shown in the flow process of Fig. 3 C.Whether KVM switch 100 of the present invention can receive that the state that is provided with (Set_Feature) request instruction of usb protocol institute standard and the data of the DEVICE_REMOTE_WAKEUP field in state selected cell wherein (Feature Selector) field judge whether controlled computer 300 enters dormant state (step S311-S314) according to breakout box 200.According to usb protocol, in enumeration process, USB Setup Controller 250 can be described the ability that the central bmAttributes field (the 7th field) of unit is informed usb host controller 310 its support Remote Wake Ups (Remote Wakeup) via its configuration.The configuration attribute of the 7th field is to represent with the bitmap kenel shown in the table one.
Table one
| D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 |
| 0 | Self-supply power source | Remote Wake Up | 0 | 0 | 0 | 0 | 0 |
Except position D5 and D6, all the other positions are all fixed value.D5=1 expresses support for the Remote Wake Up function, and D5=0 then represents not support.The D6=1 indication device possesses self-supply power source, the power supply that still can use bus to provide simultaneously this moment, and D6=0 then represents not possess.
Before usb host controller 310 entered dormant state at every turn, the remote-wakeup capability of USB Setup Controller 250 can be set or activate to usb host controller 310 via the state selected cell field in the middle of the Set_Feature request instruction.After usb host controller 310 leaves dormant state at every turn, then can send the Remote Wake Up function that removing state (Clear_Feature) request instruction is cancelled USB Setup Controller 250.
Table two
Table three
| Feature?Selector | Recipient | Value |
| DEVICE_REMOTE_WAKEUP | Device | 1 |
| ENDPOINT_HALT | Endpoint | 0 |
| TEST_MODE | Device | 2 |
In the present invention, because usb host controller 310 can be set regularly (for example with 8 milliseconds interval) for USB Setup Controller 250 is carried out poll (polling), and this poll instruction is a kind of control transmission (Control Transfer).Standard according to usb protocol, control transmission must be sent to USB Setup Controller 250 via zero end points (endpoint zero), therefore KVM switch 100 of the present invention can be according to the zero end points of a timer (not shown) and USB Setup Controller 250, judge whether to receive the poll instruction (step S315) that the usb host controller 310 from controlled computer 300 is transmitted, if zero end points is not all received this poll instruction in this section Preset Time, can judge that then this controlled computer 300 has entered the off-mode (step S316) of operating system.Or, if USB Setup Controller 250 does not receive any Set_Feature request instruction (expression notifies it to enter dormant state) that transmits from usb host controller 310 in advance, when also not having the poll instruction (step S312-S315), can judge that controlled computer 300 has entered the off-mode of operating system (step S316).Same, KVM switch 100 can or be sent one " reconnecting " instruction to each breakout box 200 (step S317) automatically according to user's demand, carries out once above-mentioned this judgement again, checks the process of instructing.According to usb protocol, this polling interval can be described first bInterval field (the 6th field) by end points and set.And this timer can be realized by hardware, software or the firmware of this KVM switch 100, in the middle of the present invention and indefinite.
Whether further, KVM switch 100 of the present invention can be judged has the control transmission of carrying out or interrupts transmission (Interrupt Transfer) in one section Preset Time between USB Setup Controller 250 and the usb host controller 310.As previously mentioned, because breakout box 200 emulation of the present invention become a USB keyboard or a mouse, and USB keyboard or mouse transmit the USB coherent signal to interrupt transmission mode, interrupt transmission so must have between USB Setup Controller 250 under the non-off-mode and usb host controller 310.Therefore, if in this section Preset Time between USB Setup Controller 250 and the usb host controller 310 when zero end points or other end points all do not carry out any control transmission or interrupt transmission, can judge that then controlled computer 300 has entered off-mode.
Behind the state of collecting all controlled computers 300, this KVM switch 100 can provide user's interface to observe the state of all controlled computers 300 simultaneously for the user, for example observes the state of 256 controlled computers 300 simultaneously.This user's interface can be a screen display menu (OSD).At this moment, the user just can further manage and control the controlled computer 300 that is in different conditions according to its demand.One or many controlled computers 300 that for example will be in the BIOS state are set at first group; One or many controlled computers 300 that will be in the OS state are set second group; One or many controlled computers 300 that will be in dormant state are set at the 3rd group; One or many controlled computers 300 that will be in off-mode are set at the four group group.
Afterwards, at the 3rd group that is in dormant state, the mode that can broadcast (broadcast) or multileaving (multi-cast) transmits one and wakes instruction up the controlled computer in this group is waken up; Or, at the 3rd group, after receiving the trigger pip that this KVM switch 100 transmits (can be a keyboard), breakout box 200 produces a drop-down negative pulse (for example width is 10 milliseconds) so that the controlled computer in this group 300 is waken up.In addition, at second group that is in the OS state, can broadcast or the mode of multileaving transmits dormancy instruction and makes the controlled computer 300 in this group enter dormant state; Or be, to transmit a shutdown command with the broadcasting or the mode of multileaving and make the controlled computer 300 in this group enter off-mode at second group.
Function according to aforementioned detection controlled computer state, the present invention can further detect the abnormality of following three kinds of computing machines, comprises the execution error of (1) system, (2) boot failure (Reboot Failure) and (3) shutdown failures (Power-off Failure) again.For example the user makes the controlled computer 300 of a certain group enter off-mode if transmit a shutdown command with the broadcasting or the mode of multileaving, if behind one section Preset Time (can according to aforementioned timer), the computer mode that is detected shows that those controlled computers 300 do not enter off-mode, then can judge the abnormal state of this computing machine, KVM switch 100 can send an alert news by any suitable mode and notify the user at this moment, for example can inform the user, also maybe can transmit by the mode of mobile phone news in brief by OSD.If control device 150 has loudspeaker, this KVM switch 100 also can transmit a signal so far loudspeaker to send alert news.
Figure 4 shows that second preferred embodiment of the present invention, in a long-distance management system 10, a long-distance management device (a for example KVM switch) 100 is coupled to a control device 150 with its 3rd interface 130 via a network 16.Or this long-distance management device 100 is coupled to a control device 150 with its 4th interface 135 via controlling module (Console Module) 140 in one, and control module 140 is in order to extend the distance between a control device 150 and the long-distance management device 100 in this.In addition, this long-distance management device 100 is coupled to many controlled computers 300 via these breakout boxs 200 in corresponding mode one to one with its second interface 120 again, make a user 14 can see through these control device 150 controls this one or many controlled computers 300.The 3rd interface 130 is a network interface, and this control device 150 more comprises a control computer 160, carries out a control program on this control computer 160, makes control computer 160 to carry out network communication with this KVM switch 100.So, the signal of video signal of controlled computer 300 output can network package form be sent to control computer 160, and the keyboard of control device 150 output can also network package form be sent to this KVM switch 100, network package is untied/is reduced into general non-network/standard format by KVM switch 100 again.In this embodiment, user's interface of many controlled computer states of demonstration can be an OSD or a webpage.And in this embodiment, the hardware structure/firmware of breakout box 200 with previous embodiment in the middle of breakout box there is no differently, can detect the state of controlled computer 300 according to usb protocol equally, so no longer given unnecessary details at this.
It should be noted that, no matter be of the present invention first or second embodiment, as long as any main frame possesses usb host controller and can be managed by KVM switch of the present invention, that is controlled computer need not installed extra hardware or software in order to implement the present invention.In addition, in the foregoing embodiments, all be to use breakout box 200 it is coupled between KVM switch 100 and the controlled computer 300, yet in another preferred embodiment, also can need not the existence of breakout box 200.That is to say, if comprised at least one this USB Setup Controller 250 in the housing of KVM switch 100 or on the circuit board, and because KVM switch itself has comprised a plurality of USB interface usually, can be connected directly to the usb connecting port of controlled computer 300, and the same state according to usb protocol detection controlled computer 300.In addition, KVM switch 100 of the present invention can also daisy chain (Daisy-Chain) or the mode of storehouse (Cascade) is connected in series other KVM switch, to expand the number of controlled computer.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; any have a technical field of the invention know the knowledgeable usually; without departing from the spirit and scope of the present invention; when doing various changes and retouching; and can think to carry other different embodiment, so protection scope of the present invention is worked as with being as the criterion that claim was defined.
Claims (10)
1. management system, in order to a control device is coupled at least one controlled computer, this management system comprises at least:
One KVM switch comprises a USB (universal serial bus), and in order to couple a USB port of this controlled computer, this KVM switch is coupled to this control device; And
One USB Setup Controller is coupled to this KVM switch, and carries out communication via a usb host controller of this USB interface and this controlled computer,
Wherein this KVM switch is detected a state of this controlled computer according to what this USB Setup Controller received from a USB request instruction of this usb host controller.
2. management system as claimed in claim 1, it is characterized in that, this KVM switch can send one and reconnect instruction to this USB Setup Controller, this USB Setup Controller is enumerated again, to detect this state of this controlled computer to this controlled computer.
3. management system as claimed in claim 1 is characterized in that:
This USB request instruction is by configuring request instruction being set, the agreement request instruction is set and is provided with in the group that the state request instruction formed selected; Or
This state selects in the group that is made up of Basic Input or Output System (BIOS) state, operation system state, dormant state and off-mode selected.
4. management system as claimed in claim 1 is characterized in that:
This KVM switch more sends a broadcasting instructions or multileaving instruction according to this state that detects to this controlled computer, to change the state of this controlled computer;
This KVM switch can judge more whether this state is unusual after sending this broadcasting instructions or this multileaving instruction; And
Whether this KVM switch more sends alert news to a user unusually according to this state that detects.
5. management system, in order to a control device is coupled at least one controlled computer, this management system comprises at least:
One KVM switch is coupled to this control device;
One breakout box, in order to one of this controlled computer is coupled to this KVM switch, this breakout box comprises more at least:
One housing;
One USB (universal serial bus) is in order to couple a usb connecting port of this controlled computer; And
One video conversion unit is arranged in this housing, is converted to a differential signal of video signal in order to the single-ended signal of video signal with this controlled computer output, and should be sent to this KVM switch by differential signal of video signal;
One USB Setup Controller is arranged in this housing, carries out communication via a usb host controller of this USB interface and this controlled computer,
Wherein this KVM switch can detect a state of this controlled computer from a USB request instruction of this usb host controller according to what this USB Setup Controller was received.
6. management system as claimed in claim 5 is characterized in that:
Be connected with a CAT-5 cable between this KVM switch and this breakout box; Or
This KVM switch more comprises an image compensation unit, in order to compensate the quality of this differential signal of video signal that this breakout box transmits.
7. method that detects at least one controlled computer state, this method is executed in the long-distance management system, and this long-distance management system comprises a long-distance management device and at least one breakout box, and this method comprises the following steps:
Via this at least one breakout box this long-distance management device is coupled to this at least one controlled computer;
With this at least one breakout box each controlled computer is carried out a USB (universal serial bus) and enumerate action;
According to the USB request instruction that this USB enumerates in the action to be received, judge a state of this at least one controlled computer from this at least one controlled computer.
8. method as claimed in claim 7 is characterized in that:
This method more comprise send one reconnect instruction to this at least one breakout box to observe the state of this at least one controlled computer again;
This state is one of them of Basic Input or Output System (BIOS) state and operation system state; Or
This USB request instruction be configuring request instruction is set and be provided with the agreement request instruction at least one of them.
9. method as claimed in claim 7 is characterized in that, judges that the step of this state of this at least one controlled computer more comprises:
Configuring request instruction is set and this is provided with the agreement request instruction if receive this, judges that then this at least one controlled computer is in the BIOS state;
If only receive this configuring request instruction is set, judges that then this at least one controlled computer is in operation system state; And
Configuring request instruction is set and this is provided with the agreement request instruction if receive this, and this wValue field numerical value that is provided with in the agreement request instruction is 1, judges that then this at least one controlled computer is in operation system state.
10. method as claimed in claim 7 is characterized in that, more comprises the following steps:
According to the state of this at least one controlled computer of being judged, should divide into one or more group by at least one controlled computer;
According to this one or more group of being distinguished, send an instruction to change the state of the controlled computer of a certain group in this one or more group; And
This state after foundation changes sends alert news to a user of this long-distance management device.
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| US20070285394A1 (en) * | 2006-06-08 | 2007-12-13 | Aten International Co., Ltd. | Kvm switch system capable of transmitting keyboard-mouse data and receiving video data through single cable |
| CN101226424B (en) * | 2007-01-15 | 2013-03-27 | 旺玖科技股份有限公司 | Multimedia electronic type switcher |
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| CN104122982B (en) * | 2013-04-26 | 2017-12-29 | 联想(北京)有限公司 | A kind of method for handover control and electronic equipment |
| CN104866448A (en) * | 2015-06-24 | 2015-08-26 | 北京众合天下管理咨询有限公司 | Intelligent management system for large-scale USB equipment |
| CN104866448B (en) * | 2015-06-24 | 2017-11-10 | 北京众合天下管理咨询有限公司 | The intelligent management system of extensive USB device |
| CN111583621A (en) * | 2019-02-19 | 2020-08-25 | 聪泰科技开发股份有限公司 | Remote control method |
| CN111583621B (en) * | 2019-02-19 | 2021-11-05 | 聪泰科技开发股份有限公司 | Remote control method |
| 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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