CN101539897B - Multi-computer switching device and operation method thereof - Google Patents
Multi-computer switching device and operation method thereof Download PDFInfo
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- CN101539897B CN101539897B CN2008100873341A CN200810087334A CN101539897B CN 101539897 B CN101539897 B CN 101539897B CN 2008100873341 A CN2008100873341 A CN 2008100873341A CN 200810087334 A CN200810087334 A CN 200810087334A CN 101539897 B CN101539897 B CN 101539897B
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Abstract
A multi-computer switching device and an operation method thereof enable a plurality of computer mainframes to share at least one universal serial bus peripheral device. The multi-computer switching device uses a switching module to enable the computer mainframes to communicate directly with the universal serial bus peripheral device. And the multi-computer switching device comprises a microprocessor unit and a universal serial bus controller for interfering the setting of the universal serial bus peripheral device by using specifications used in a universal serial bus transmission protocol for setting information instructions when the multi-computer switching device switches difference computer mainframes Thus, the universal serial bus peripheral device is changed to receive signals which are represented identification formation and sent by the computer mainframes to enable the computer mainframes to eliminate the necessity for identifying the universal serial bus peripheral device through programs listed by the device during each time of switching. As a result, the compatibility problem and switching performance are improved.
Description
Technical field
The present invention relates to a kind of Kvm, particularly a kind of Kvm and operation method thereof that has compatibility concurrently and promote performance of handoffs.
Background technology
Because the fast development of scientific and technological industry, the popularity rate of computing machine also just improve significantly.And when the user has many computing machines and wants shared same group of operating means and display, will need to use Kvm, just so-called keyboard-screen-mouse switching device (Keyboard-Video-Mouse Switch, KVM Switch), carry out switching controls.Thus, needed to connect respectively separately peripheral unit (or claiming control end device (ConsoleDevice)) by to be allowed many computing machines, to save the space.
In addition, general along with USB (universal serial bus) (USB) peripheral unit, make people more and more high for being used for the demand of circumscribed USB periphery product, therefore existing increasing at present KVM switching device shifter design has USB local side circuit, allow the KVM switching device shifter except the switching of keyboard, mouse and the screen that can carry out traditional PS/2, the USB peripheral unit can be directly connected on the KVM switching device shifter for the function that also provides the USB peripheral unit to share, and shares in each intercomputer.
And present KVM switching device shifter can be divided into two kinds of designs haply, is respectively mechanical type and electronic type.Wherein, the mechanical type design mainly is to have the idea that switch switches, and reaches the effect that switch switches with reality by change-over switch or even collocation hardware commutation circuit.By way of example, mechanical type KVM switching device shifter is modal is exactly to be used for the operating platform that many computing machines switch peripheral units such as the keyboard that uses the PS/2 interface and mouse merely.
Yet, we know in the USB specification regulation, when the USB peripheral unit is connected to computer host system, computer host system just can carry out action that device enumerates (Enumeration) carrying out the USB device that identification was connected, and the device classification (class) that the USB peripheral unit just will repayment itself is to carry out device identification and to obtain different transmission modes according to the different device classification.Therefore, if the words that design with the function of the notion collocation circumscribed USB peripheral unit of this kind mechanical type design, will produce a kind of shortcoming, when the main frame of operating at present certainly whenever the user switches to another main frame exactly, this main frame just must be more again the once described external USB peripheral unit of identification just can use, finish the switching service routine so will expend the long time.
Be directed to this, just there has been the design of electronic type to produce, it mainly is to increase design one microprocessing unit to do bridge joint, allow all USB peripheral units be to be connected to this microprocessing unit earlier, communicate by letter to reach with main frame by the processing and the conversion of this microprocessing unit, the switching signal that is produced when wherein microprocessing unit then is reception user switching computer main frame is carried out the switching between each main frame again.Thus, just can carry out the described USB peripheral unit of identification by microprocessing unit, and after the user is switched the main frame of use, directly provide the information of relevant USB peripheral unit to this main frame by microprocessing unit, make main frame be able to directly be connected use, and do not need at each once all USB peripheral units of identification again that switch when using all with the USB peripheral unit.
And the design by electronic type KVM switching device shifter, though can save when switching the time of identification USB peripheral unit again.But, because it is to carry out identification USB peripheral unit by microprocessing unit, and the mode that designs unlike mechanical type is to come identification by main frame (operating system), therefore wherein microprocessing unit for the transmission and the identification of usb signal, just become the operation of test KVM switching device shifter and go up important key, for miscellaneous USB peripheral unit on the market, often the design quality of microprocessing unit just can have influence on the compatibility of whole KVM switching device shifter, and possible microprocessing unit must upgrade the USB peripheral unit of constantly weeding out the old and bring forth the new to adapt to often, thereby has reduced the flexible Application of product relatively.
Therefore, how to carry out design improvement, to reach the purpose that the good and tool of compatibility promotes performance of handoffs, be to be worth the place studied at present on the KVM switching device shifter.
Summary of the invention
In view of this, technical matters to be solved by this invention is, the idea that adopts switch to switch, and the design of collocation microprocessing unit and USB controller, to allow main frame be able to direct identification USB (universal serial bus) peripheral unit, and the main frame that need not allow each switching use all must carry out the program that primary device is enumerated (Enumeration) again, relative at Kvm (KVM Switch) when switching, only need carry out the setting general-purpose serial bus peripheral unit to change into the identification information that receives the various computing machine host, make it only receive the data-signal that main frame transmitted of this identification information representative.Whereby, have the purpose that compatibility is good and promote performance of handoffs concurrently to allow Kvm reach.
In order to achieve the above object, according to a scheme proposed by the invention, a kind of Kvm (KVM Switch) is provided, allow a plurality of main frames can shared at least one USB (universal serial bus) (USB) peripheral unit, this Kvm comprises: a plurality of uplink ports, a detecting unit, all die change pieces, a USB controller, a control module and a microprocessing unit.Wherein, a plurality of uplink ports connect described main frame in order to correspondence.Detecting unit detects signal in order to obtain the connection running status of described main frame to produce one.And handover module connects the USB (universal serial bus) peripheral unit, in order to carry out the signal transmission between this USB (universal serial bus) peripheral unit and the described main frame.Moreover USB controller connects this handover module, is used for setting this USB (universal serial bus) peripheral unit of control, and control module detects signal according to this and controls the switching that this handover module carries out correspondence in addition, and exports a switching information signal in addition.At last, microprocessing unit records a described main frame identification information separately, and when receiving this handover information signal, control this USB controller according to this handover information signal, instruct to this USB (universal serial bus) peripheral unit to transmit a pair of set information that should identification information.Wherein, this handover module further comprises: a plurality of virtual human-computer interface devices; A plurality of responding module are in order to produce a back-signalling; A plurality of switch units, adopting one to one, connected mode connects described responding module and described uplink port; Reach an auxiliary switch unit, connect described virtual human-computer interface device and this USB (universal serial bus) peripheral unit, give described switch unit to distribute described virtual human-computer interface device and this USB (universal serial bus) peripheral unit according to the control of this control module; Wherein, described switch unit is able to the control according to this control module, should assist switch unit and switch respectively to be connected to become the continuous separately responding module of connection or to be switching to connection, and respond the command signal that described main frame sends by described uplink port.Whereby, this USB (universal serial bus) peripheral unit directly changes to the command signal that main frame sent that receives the corresponding identification information representative of this set information instruction, reaching the lifting performance of handoffs, and allow directly this USB (universal serial bus) peripheral unit of identification and have preferable compatibility of main frame.
In order to achieve the above object, according to another program proposed by the invention, a kind of operation method of Kvm is provided, allow a plurality of main frames can shared at least one USB (universal serial bus) peripheral unit, the step of this operation method comprises: at first, produce one and switch information signal, one microprocessing unit of this Kvm then instructs to this USB (universal serial bus) peripheral unit according to the set information that this handover information signal transmits a pair of identification information that should main frame, receives the corresponding command signal that main frame sent of this set information instruction so that this USB (universal serial bus) peripheral unit changes to.And then carry out a switching program again, be connected directly to this indicated main frame of this handover information signal to switch this USB (universal serial bus) peripheral unit.Whereby, after this changeover program was carried out, this USB (universal serial bus) peripheral unit was able to directly and the main frame of this switching carries out the transmission of signal.
So, by operation of the present invention, make each main frame after the switching by Kvm connects, do not needed via signal converting, and be directly connected to this USB (universal serial bus) peripheral unit, and allow the operating system of main frame directly carry out the signal transmission and communicate by letter, with the consistency problem of solution to the USB (universal serial bus) peripheral unit with the USB (universal serial bus) peripheral unit.And Kvm of the present invention is further set the address of the main frame that is received with change to the USB (universal serial bus) peripheral unit when carrying out switchover operation.Allow the main frame that switches to not need to carry out device more again thus and enumerate, can directly communicate, significantly promote the performance of handoffs of Kvm with the USB (universal serial bus) peripheral unit.
Above general introduction and ensuing detailed description and accompanying drawing all are to reach mode, means and the effect that predetermined purpose is taked in order to further specify the present invention.And relevant other purposes of the present invention and advantage will be set forth in follow-up explanation and accompanying drawing.
Description of drawings
Fig. 1 is the application synoptic diagram of Kvm of the present invention;
Fig. 2 is the embodiment block scheme of Kvm of the present invention; And
Fig. 3 is the embodiment process flow diagram of the operation method of Kvm of the present invention.
Wherein, description of reference numerals is as follows:
1 Kvm
11 detecting units
12 handover modules
121 switch units
122 auxiliary switch units
123 responding module
124 multi-port hub
125 virtual human-computer interface devices
13 USB controllers
14 control modules
15 microprocessing units
16 uplink ports
17 connecting interfaces
2 main frames
3 USB (universal serial bus) peripheral units
4 external control devices
Embodiment
Please refer to Fig. 1, be the application synoptic diagram of Kvm of the present invention.Wherein, Kvm of the present invention (KVM Switch) the 1st is used for allowing a plurality of main frames 2 be able to shared at least one USB (universal serial bus) (USB) peripheral unit 3 (as keyboard, mouse, memory storage etc.).
And, Kvm 1 of the present invention mainly is a notion of utilizing hub and change-over switch, make main frame 2 not only directly connected USB (universal serial bus) peripheral unit 3, with the problem of USB (universal serial bus) peripheral unit 3 compatibilities of 1 pair of each tame label of solution Kvm by after switch connecting.In addition, utilize again in the USB host-host protocol, the specification of employed set information instruction between the device, this set information instruction is for example to comprise instruction specifications such as setting address (Set Address), configuration (Set Configuration), with when switching various computing machine host 2 uses, can directly change 3 addresses that can receive of USB (universal serial bus) peripheral unit and configuration signal (different main frames 2 has specific address and configuration signal separately).Whereby, allow main frame 2 not need all must pass through device when using and enumerate the program of (Enumeration) and come identification USB (universal serial bus) peripheral unit 3, and then can significantly promote the performance of handoffs of Kvm 1 each the switching.
Please refer to Fig. 2, be the embodiment block scheme of Kvm of the present invention.As shown in the figure, present embodiment provides a kind of Kvm 1, be to allow the main frame 2 can shared USB (universal serial bus) peripheral unit 3, and this Kvm 1 comprise: a detecting unit 11, all die change pieces 12, a USB controller 13, a control module 14, a microprocessing unit 15, a plurality of uplink port (Upstream Port) 16 and one connecting interface 17.Wherein, uplink port 16 is to connect main frame 2 in order to correspondence, and on actual design, uplink port 16 designed quantity are just represented the quantity of 1 main frame 2 that can connect of Kvm, are limited and there is no in the present embodiment.
Detecting unit 11 is to be connected in described uplink port 16, in order to obtain the connection running status of main frame 2, whether just be used at any time detecting has any main frame 2 to be connected to Kvm 1, if when having detected main frame 2 and being connected to arbitrary uplink port 16, then produce one and detect signal.Wherein, this to detect signal can for example be that running status (as start, shutdown, dormancy and dormancy answer etc.) and each main frame 2 that includes each main frame 2 is respectively to be connected to status informations such as which uplink port 16.
And handover module 12 is in order to connect USB (universal serial bus) peripheral unit 3, to receive the switching controls of control module 14, and want the main frame of manipulating 2 at present for the user 3 switchings of USB (universal serial bus) peripheral unit, and then carry out the signal transmission between USB (universal serial bus) peripheral unit 3 and the main frame 2.In addition, handover module 12 also can be responded described the connection and be not the command signal that the main frame 2 of present use is sent after switching, and makes each main frame 2 can not produce mistake in operation.And in order to realize this switching effect, further comprise in the handover module 12: a plurality of switch unit 121, one auxiliary switch units 122, a plurality of responding module 123, a multi-port hub 124 and a plurality of virtual human-computer interface device 125.
Wherein, be for 122 times to be connected with described virtual human-computer interface device 125 and multi-port hub 124 at auxiliary switch unit.Multi-port hub 124 promptly is in order to connect USB (universal serial bus) peripheral unit 3; And virtual human-computer interface device 125 mainly is when main frame 2 start, the Basic Input or Output System (BIOS) (BIOS) of the responding main frame 2 required information of selftest (POST) of starting shooting.And same, the quantity of the virtual human-computer interface device 125 that present embodiment is designed is the quantity of the uplink port 16 that depends on that Kvm 1 itself is designed, with the attachable main frame 2 of enough supports.And, an above-mentioned virtual human-computer interface device 125 wherein is to be connected in multi-port hub 124 earlier, to be connected in auxiliary switch unit 122 by multi-port hub 124 again, so as to preventing that multi-port hub 124 is not when connecting USB (universal serial bus) peripheral unit 3, also can finish echo message required when responding main frame 2 starts, and main frame 2 is started shooting smoothly.
Moreover responding module 123 is in order to producing a back-signalling, as: deny package (NAK) etc.And described switch unit 121 is distributed outside the device that uses to receive auxiliary switch unit 122 except being to connect auxiliary switch unit 122, and adopting one to one especially, connected mode connects described responding module 123.So, when the main frame 2 of present use is when being switching to non-working condition, can also by with the communicating by letter of responding module 123, form the state that disconnects lines with USB (universal serial bus) peripheral unit 3 and main frame 2 under the non-working condition can not thought.In other words; because main frame 2 can periodically send the inquiry instruction usually; the USB (universal serial bus) peripheral unit 3 that is connected to require carries out recoil state; and when main frame 2 has been switching to non-working condition (USB (universal serial bus) peripheral unit 3 has switched in fact to 2 uses of other main frame); the switch unit 121 that is connected just must be switching to and be connected in responding module 123; allowing main frame 2 be received relevant back-signalling (as denying package (NAK)) sending when instruction inquiry, and think that no abnormal situation produces.
According to the above, control module 14 is to control the switching that handover module 12 carries out correspondence according to the signal that detects that detecting unit 11 is exported.Wherein, the auxiliary switch unit 122 in the handover module 12 is the control according to control module 14, and the USB (universal serial bus) peripheral unit 3 that distributes virtual human-computer interface device 125 and multi-port hub 124 to be connected is given described switch unit 121; Switch unit 121 in the handover module 12 then is can be according to the control of control module 14, should assist switch unit 122 and be switching to the continuous separately responding module 123 of connection respectively or be switching to connection, further to respond to each main frame 2 by uplink port 16 respectively.
Under the preset operating conditions of present embodiment, control module 14 receive detect signal after, switching according to detecting the correspondence that the open state handover module that information is controlled 12 in the signal carries out, is for example USB (universal serial bus) peripheral unit 3 to be switched to be connected to the uplink port 16 that the main frame 2 of starting shooting is at first connected.And,, then be switching to connection responding module 123 if be in the state of starting shooting and finishing at other main frame 2; And if just be at the state of start-up phase, then be to switch to be connected in auxiliary switch unit 122, with the virtual human-computer interface device of accepting to be distributed 125.Wherein, the start of main frame 2 successively is to decide according to the startup sequencing of USB local side controller in the main frame 2 (figure does not show).
And since the present invention main be can be when Kvm 1 switches various computing machine host 2, can further cut setting general-purpose serial bus peripheral unit 3, it is changed into the identification information that the main frame 2 that can receive is had, the signal that the main frame 2 that allows USB (universal serial bus) peripheral unit 3 only can receive this identification information representative is sent.To this, the present invention increases design USB controller 13 and microprocessing unit 15 in Kvm 1.Wherein, USB controller 13 is to connect handover module 12, and in order to set and control USB (universal serial bus) peripheral unit 3.And on actual design, USB controller 13 is directly to connect USB (universal serial bus) peripheral unit 3, to reach the effect of control.
And microprocessing unit 15 is to be connected between control module 14 and the USB controller 13, and record each main frame 2 identification information separately in the microprocessing unit 15, make that microprocessing unit 15 is switching information signals of being exported when carrying out corresponding switching according to control module 14 control handover modules 12, and control USB controller 13, instruct to USB (universal serial bus) peripheral unit 3 to utilize the USB host-host protocol to transmit a pair of set information that should identification information.So USB (universal serial bus) peripheral unit 3 is directly to change to only to receive the command signal that this set information instructs the main frame 2 of corresponding identification information representative to be sent after receiving the set information instruction.Thus, when Kvm 1 switches different main frames 2, just do not need to carry out again again the program that primary device is enumerated, and main frame 2 can connect in the switching by handover module 12, and directly carries out the signal transmission with USB (universal serial bus) peripheral unit 3 and communicate by letter.
Subsidiary one carry be, form the condition mode of switching computer main frame 2 in the present embodiment, switch to the main frame 2 of starting shooting at first by the running status that detects each main frame 2 except above-mentioned, also can allow the user directly import relevant character string or the main frame 2 of button to switch to required use by USB (universal serial bus) peripheral unit 3 (as keyboard); Or can allow the user directly carry out external control by the operation (as: key-press module, processor related application device etc.) of an external control device 4, to reach the effect of switching.
Wherein, because detecting unit 11 is to be connected in uplink port 16, therefore when USB (universal serial bus) peripheral unit 3 has the input signal of generation to give main frame 2, the design of present embodiment is further to obtain this input signal by detecting unit 11, and offer control module 14, allow control module 14 judge that this input signal is when meeting in the control module 14 a default connectivity port setting value, just can control this handover module 12 according to this connectivity port setting value and carry out corresponding switching, so that being switched, USB (universal serial bus) peripheral unit 3 is connected to the uplink port 16 that this connectivity port setting value is contrasted, and export the handover information signal equally again and give microprocessing unit 15, with setting general-purpose serial bus peripheral unit 3, it is changed into the identification information that the main frame 2 that can receive is had.By way of example, suppose that default connectivity port setting value is that signal with " Ctrl+F1 key " contrasts first uplink port of expression, and contrast second uplink port of expression that the rest may be inferred with the signal of " Ctrl+F2 key ".Therefore, the input signal that when the user pushes " Ctrl " key on the keyboard and " F1 " key simultaneously, is produced, be to meet default connectivity port setting value, be connected to first uplink port so just USB (universal serial bus) peripheral unit 3 can be switched, carry out the signal transmission with the main frame 2 that is connected with first uplink port.
In addition, the design aspect of control device 4 externally, external control device 4 is to be connected in microprocessing unit 15 by connecting interface 17, wherein connecting interface 17 can for example be the transmission interface of serial or parallel on actual design.Therefore, designed microprocessing unit 15 is can be further in order to receive the connectivity port trigger pip that external control device 4 is produced in the present embodiment, and change output one and switch signal, carry out switching controls so as to Auxiliary Control Element 14 to control module 14.So, control module 14 just can be controlled handover module 12 according to this switching signal again, so that being switched, USB (universal serial bus) peripheral unit 3 is connected to the indicated uplink port of this connectivity port trigger pip 16, and export the handover information signal equally more in addition and give microprocessing unit 15, with setting general-purpose serial bus peripheral unit 3, it is changed into the identification information that the main frame 2 that can receive is had.
Refer again to Fig. 3, be the embodiment process flow diagram of the operation method of Kvm of the present invention.As shown in the figure, the invention provides a kind of operation method of Kvm 1, it is to allow a plurality of main frames 2 can shared USB (universal serial bus) peripheral unit 3, the step of this operation method comprises: at first after Kvm 1 starts, carry out this Kvm 1 of initialization, see shown in the step S301, and can for example be multi-port hub 124 to be switched earlier in advance to be connected to first uplink port earlier in initialized process, be connected to remaining uplink port and virtual human-computer interface device 125 divided respectively to be equipped with.
Then, whether there is any main frame 2 to be connected to Kvm 1, perhaps detects the connection running status of the main frame 2 that has originally connected, detect signal, see shown in the step S303 to judge whether to produce by detecting.If judged result is not for, then expression there is no the main frame 2 of new connection or the main frame 2 that originally connected there is no and produces shutdown or enter the state of dormancy at present, so keep the switching state of present Kvm 1.In addition, Kvm 1 is when operation, also can capture the input signal that 2 inputs of 3 pairs of main frames of USB (universal serial bus) peripheral unit are produced at any time, whether meet default connectivity port setting value, see shown in the step S305 to judge this input signal.If judged result is for denying, represent equally then that the user there is no and push or key in related key or the character string that meets switching computer main frame 2 conditions, so that input signal does not meet any connectivity port setting value, so Kvm 1 is still kept present switching state.Moreover Kvm 1 also can judge whether to receive the connectivity port trigger pip that external control device 4 is produced at run duration at any time, sees shown in the step S307.If judged result, is represented then that the user there is no to utilize external control device 4 to control to switch for not and is used different main frames 2, so Kvm 1 can be kept present switching state.Afterwards, be repeated to step S301 and proceed follow-up steps flow chart again.
And if the judged result of one of them step of step S303, S305 and S307 is to be, then can produce one switches information signal, sees shown in the step S309, must change present switching state with expression Kvm 1.Wherein, if the judged result of step S301 is for being then can detect signal according to this and produce the handover information signal; And if the judged result of step S305 is to be, then be to produce the handover information signal according to this connectivity port setting value; And if the judged result of step S307 then is to produce the handover information signal according to this connectivity port trigger pip when being.
So after step S309 produces the handover information signal, just can transmit a set information according to this handover information signal instructs to USB (universal serial bus) peripheral unit 3, see shown in the step S311, to get involved setting general-purpose serial bus peripheral unit 3, it is changed into the identification information that the main frame 2 that can receive is had, see shown in the step S313, just change to the identification information that is about to switch the main frame 2 that connects, to allow USB (universal serial bus) peripheral unit 3 next only can receive the command signal that this set information instructs the main frame 2 of corresponding identification information representative to be sent.
At last, after setting has been changed, can carry out a switching program, be connected to the indicated main frame of this handover information signal 2, see shown in the step S315 to switch USB (universal serial bus) peripheral unit 3.Whereby,, can allow main frame 2 not need the each flow process that all will enumerate through device earlier, can directly communicate by letter with the transmission that USB (universal serial bus) peripheral unit 3 carries out data-signal by repeating above-mentioned steps.
In sum, because only can getting involved, microprocessing unit among the present invention and USB controller produce the action of setting when Kvm switches the various computing machine host, allow between main frame and the USB (universal serial bus) peripheral unit after the switching by Kvm is connected, do not need bridge joint by microprocessing unit and USB controller, and the operating system that makes main frame is able to directly carry out the signal transmission with the USB (universal serial bus) peripheral unit and communicate by letter, to solve the consistency problem to the USB (universal serial bus) peripheral unit.And, the present invention is when switching, can further set to change the address of its main frame that is received the USB (universal serial bus) peripheral unit, allowing the main frame that switches to not need to carry out device more again thus enumerates, can communicate with the USB (universal serial bus) peripheral unit, and then significantly promote the performance of handoffs of Kvm.
Yet, the above, only be the detailed description and the accompanying drawing of specific embodiments of the invention, be not in order to restriction the present invention, all scopes of the present invention should be as the criterion with the scope of appending claims, the those skilled in the art in the field of the invention, can think easily and variation or revise all can be encompassed in the claim scope that the present invention defines.
Claims (17)
1. a Kvm is characterized in that, allows a plurality of main frames can shared at least one USB (universal serial bus) peripheral unit, and this Kvm comprises:
A plurality of uplink ports connect described main frame in order to correspondence;
One detecting unit in order to obtain the connection running status of described main frame, detects signal to produce one;
All die change pieces connect this USB (universal serial bus) peripheral unit, in order to carry out the signal transmission between this USB (universal serial bus) peripheral unit and the described main frame;
One USB controller connects this handover module, is used for setting this USB (universal serial bus) peripheral unit of control;
One control module detects signal according to this and controls the switching that this handover module carries out correspondence, and switches information signal in order to export one; And
One microprocessing unit, record a described main frame identification information separately, and control this USB controller according to this handover information signal, instruct to this USB (universal serial bus) peripheral unit to transmit a pair of set information that should identification information;
Whereby, this USB (universal serial bus) peripheral unit directly changes to the command signal that main frame sent that receives the corresponding identification information representative of this set information instruction;
Wherein, this handover module further comprises:
A plurality of virtual human-computer interface devices;
A plurality of responding module are in order to produce a back-signalling;
A plurality of switch units, adopting one to one, connected mode connects described responding module and described uplink port; And
One auxiliary switch unit connects described virtual human-computer interface device and this USB (universal serial bus) peripheral unit, gives described switch unit to distribute described virtual human-computer interface device and this USB (universal serial bus) peripheral unit according to the control of this control module;
Wherein, described switch unit is able to the control according to this control module, should assist switch unit and switch respectively to be connected to become the continuous separately responding module of connection or to be switching to connection, and respond the command signal that described main frame sends by described uplink port.
2. Kvm as claimed in claim 1, it is characterized in that, described wherein this control module detects signal according to this and controls this handover module, is connected to the uplink port that main frame was connected of start at first so that this USB (universal serial bus) peripheral unit is switched.
3. Kvm as claimed in claim 1 is characterized in that, described wherein this detecting unit is further in order to obtain the input signal that this USB (universal serial bus) peripheral unit inputs to described main frame.
4. Kvm as claimed in claim 3, it is characterized in that, described wherein this control module further judges when this input signal meets a default connectivity port setting value, controls this handover module and this USB (universal serial bus) peripheral unit is switched is connected to the uplink port that this connectivity port setting value is contrasted.
5. Kvm as claimed in claim 1, it is characterized in that, further comprise a connecting interface, connect this microprocessing unit, be used for receiving the connectivity port trigger pip that an external control device is produced, and further produce a switching signal to this control module by this microprocessing unit.
6. Kvm as claimed in claim 5, it is characterized in that, described wherein this control module is further controlled this handover module according to this switching signal, is connected to the indicated uplink port of this connectivity port trigger pip so that this USB (universal serial bus) peripheral unit is switched.
7. Kvm as claimed in claim 5 is characterized in that, described wherein this connecting interface is the serial or parallel interface.
8. Kvm as claimed in claim 1 is characterized in that, described wherein this handover module further comprises:
One multi-port hub is connected between this auxiliary switch unit and this USB (universal serial bus) peripheral unit.
9. Kvm as claimed in claim 8 is characterized in that one of them of described wherein said virtual human-computer interface device is connected in this multi-port hub, to connect this auxiliary switch unit by this multi-port hub.
10. Kvm as claimed in claim 8 is characterized in that, described wherein this USB controller connects this multi-port hub, to control this USB (universal serial bus) peripheral unit.
11. Kvm as claimed in claim 1 is characterized in that, described wherein this set information instruction comprises the instruction of setting address and configuration.
12. the operation method of a Kvm is characterized in that, allows a plurality of main frames can shared at least one USB (universal serial bus) peripheral unit, the step of this operation method comprises:
Confirm to produce one and switch information signal;
One microprocessing unit of this Kvm instructs to this USB (universal serial bus) peripheral unit according to the set information that this handover information signal transmits a pair of identification information that should main frame, receives the corresponding command signal that main frame sent of this set information instruction so that this USB (universal serial bus) peripheral unit changes to; And
Carry out a switching program, be connected directly to this indicated main frame of this handover information signal to switch this USB (universal serial bus) peripheral unit;
Whereby, after this changeover program was carried out, this USB (universal serial bus) peripheral unit was able to directly and the main frame of this switching carries out the transmission of signal.
13. the operation method of Kvm as claimed in claim 12 is characterized in that, the connection running status that further detects described main frame detects signal to produce one, and detects signal according to this and produce this handover information signal.
14. the operation method of Kvm as claimed in claim 12, it is characterized in that, further obtain the input signal that this USB (universal serial bus) peripheral unit is imported described main frame, and judge when this input signal meets a default connectivity port setting value, produce this handover information signal.
15. the operation method of Kvm as claimed in claim 12 is characterized in that, further receives a connectivity port trigger pip, to produce this handover information signal according to this connectivity port trigger pip.
16. the operation method of Kvm as claimed in claim 15 is characterized in that, described wherein this connectivity port trigger pip is produced by an external control device.
17. the operation method of Kvm as claimed in claim 12 is characterized in that, described wherein this set information instruction comprises the instruction of setting address and configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100873341A CN101539897B (en) | 2008-03-21 | 2008-03-21 | Multi-computer switching device and operation method thereof |
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| CN2008100873341A CN101539897B (en) | 2008-03-21 | 2008-03-21 | Multi-computer switching device and operation method thereof |
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| CN101539897A CN101539897A (en) | 2009-09-23 |
| CN101539897B true CN101539897B (en) | 2010-10-13 |
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| CN2008100873341A Expired - Fee Related CN101539897B (en) | 2008-03-21 | 2008-03-21 | Multi-computer switching device and operation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6067987B2 (en) * | 2012-03-28 | 2017-01-25 | ソニーセミコンダクタソリューションズ株式会社 | Electronic device and host determination method |
| CN105335312B (en) * | 2014-07-15 | 2018-01-02 | 东硕电子（昆山）有限公司 | The connecting interface switching device of multicomputer device |
| CN108255639A (en) * | 2017-12-12 | 2018-07-06 | 深圳市科思科技股份有限公司 | A kind of server system |
| CN108549614A (en) * | 2018-04-02 | 2018-09-18 | 郑州云海信息技术有限公司 | A kind of device and switching method of binodal point server shared interface |
| CN112395225A (en) * | 2019-08-19 | 2021-02-23 | 致伸科技股份有限公司 | Universal serial bus device and firmware updating method thereof |
| CN111414067B (en) * | 2020-03-30 | 2021-09-14 | 北京英格福科贸有限公司 | Computer starting method |
| CN111796859A (en) * | 2020-06-22 | 2020-10-20 | 上海众言网络科技有限公司 | Nginx-based project dynamic publishing method and device |
| CN116303186A (en) * | 2022-09-08 | 2023-06-23 | 深圳市湘凡科技有限公司 | Switching device suitable for two devices |
| CN115344129B (en) * | 2022-10-20 | 2023-03-24 | 中孚信息股份有限公司 | One-way KVM keyboard state indication synchronization method, system and equipment |
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| WO2001015130A1 (en) * | 1999-08-25 | 2001-03-01 | Apex Inc. | Terminal emulator for interfacing between a communications port and a kvm switch |
| CN2522910Y (en) * | 2001-11-30 | 2002-11-27 | 齐丰电子工业有限公司 | General serial bus bar concentrator |
| CN101101510A (en) * | 2006-07-06 | 2008-01-09 | 安国国际科技股份有限公司 | Multicomputer shifter with expandability |
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| WO2001015130A1 (en) * | 1999-08-25 | 2001-03-01 | Apex Inc. | Terminal emulator for interfacing between a communications port and a kvm switch |
| CN2522910Y (en) * | 2001-11-30 | 2002-11-27 | 齐丰电子工业有限公司 | General serial bus bar concentrator |
| CN101101510A (en) * | 2006-07-06 | 2008-01-09 | 安国国际科技股份有限公司 | Multicomputer shifter with expandability |
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