CN102122238A - Computer management system and method - Google Patents
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- CN102122238A CN102122238A CN201010003577XA CN201010003577A CN102122238A CN 102122238 A CN102122238 A CN 102122238A CN 201010003577X A CN201010003577X A CN 201010003577XA CN 201010003577 A CN201010003577 A CN 201010003577A CN 102122238 A CN102122238 A CN 102122238A
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Abstract
The invention discloses a computer management system which comprises a control module and a computer management device. The control module is provided with a first communication interface and a second communication interface, wherein the first communication interface is used for coupling a central control computer. The computer management device is coupled to the second communication interface and one or more controlled computers so that the one or more controlled computers can be selectively switched to the second communication interface. The computer management device enables a simulated image signal output by the one or more controlled computers to be output to the control module through the second communication interface. The control module converts the simulated image signal into a USB (Universal Serial Bus) format image signal, and then outputs the signal to the central control computer; and the control module outputs a control signal output by the central control computer to the computer management device through the second communication interface so as to manage the computer management device and the one or more controlled computers.
Description
Technical field
The invention relates to a kind of computer management system and method, can utilize USB (universal serial bus) (USB) agreement to carry out digital data transmission between particularly wherein middle control computer and the computer management device.
Background technology
Figure 1A shows a traditional calculations machine management system 10.This system 10 comprises control computer 16 in a computer management device 12, a controlled computer 14 that is connected with computer management device 12 and the client.Controlled computer 14 directly links with computer management device 12, and computer management device 12 is sent to control computer 16 in the client with the signal of video signal of controlled computer 14.On the other hand, control computer 16 directly links in computer management device 12 and the client, and a performed application A P is sent to controlled computer 14 after with the mouse-keyboard conversion of signals on the middle control computer 16.In the middle of this traditional computer management system 10, because computer management device 12 does not have switching device shifter, therefore middle control computer 16 only can be by controlled computer 14 of computer management device 12 controls.
Figure 1B shows early stage publication number 2006/0253639 disclosed another the traditional computer management system 10 of U.S. patent application case.This system 10 comprises control computer 16 in a computer management device 12, many controlled computers 14 that are connected with computer management device 12 and the client.This computer management device 12 has one first usb 1 21 and one second usb 1 22, and wherein first usb 1 21 is in order to connect many controlled computers 14; Second usb 1 22 is in order to control computer 16 in connecting.It should be noted that except first usb 1 21, only interconnect between computer management device 12 and every controlled computer 14 with a USB cable.This computer management device 12 is obtained the signal of video signal that controlled computer 14 is exported by its first usb 1 21 and a USB cable, could export the signal of video signal of USB form to computer management device 12 so every controlled computer 14 must be installed a driver.If this controlled computer 14 can't be started shooting because of the operating system damage, just driver can't be carried out, middle control computer 16 can't be managed this controlled computer 14 by this computer management device 12.On the other hand, in order to satisfy the controlled computer 14 that carries different operating system, the manufacturer of computer management device 12 or supplier also must provide the driver of multiple different editions.
Summary of the invention
A viewpoint of the present invention is to propose a kind of computer management system, and the communication between wherein middle control computer and the computer management device (for example KVM switch) is to utilize usb protocol to carry out digital data transmission.For instance, computer management device (or control module that is connected with the computer management device) can have USB device controller (USB Device Controller), and middle control computer can have usb host controller (USBHost Controller), and utilizes usb protocol at transmission of digital signals between the two.
Another aspect of the present invention is, except the needed keyboard of general computer management device, mouse, screen (KVM) signal can utilize above-mentioned usb protocol between middle control computer (or control module) and computer management device with the digital form transmission, the file data of middle control computer (for example being stored in the program updates file in the virtual media) also can be transferred to the controlled computer that is connected with the computer management device by this mode in addition, rapidly safety again.
In an embodiment of the present invention, computer management system comprises a control module and a computer management device.This control module has one first interface and one second interface, and wherein this first interface is in order to couple control computer in.This computer management device couples so far second interface and one or many controlled computers so that this one or many controlled computers can optionally be switched second interface so far.This computer management device make this one or an analog image signal of many controlled computers output be output control module so far through second interface thus.This control module is a control computer in the output so far behind the USB format image signal with this analog image conversion of signals, and this control module through second interface thus with this in a control signal of control computer output export the computer management device to manage this computer management device and this one or many controlled computers.
In another embodiment of the present invention, computer management system comprise a supervisory routine, a switching device shifter, with a control module.This supervisory routine is executed in one on the control computer, makes the exportable control signal of control computer in this.This switching device shifter is coupled to one or many controlled computers.This control module has one first interface and one second interface, and wherein this first interface system is in order to coupling control computer in, and this second interface is in order to coupling this switching device shifter so that this one or many controlled computers can optionally be switched second interface so far.This switching device shifter make this one or an analog image signal of many controlled computers output be output control module so far through second interface thus.Wherein this control module is a control computer in the output so far behind the USB format image signal with this analog image conversion of signals, and this control module through second interface thus with this in a control signal of control computer output export the computer management device to manage this computer management device and this one or many controlled computers.
In another embodiment of the present invention, computer management system comprises a supervisory routine and a computer management device.This supervisory routine is executed in one on the control computer, makes the exportable control signal of control computer in this.This computer management device makes in this control computer couple one or many controlled computers.This computer management device more comprises a switching device shifter, an analog-digital converter, a processor, a USB device controller.Switching device shifter make this one or many controlled computers can optionally be switched so far in control computer.This analog-digital converter couples switching device shifter so far, with this one or an analog image conversion of signals of many controlled computers output be a digital image signal.This processor couples analog-digital converter so far, and makes this digital image signal be converted into a USB format image signal.Control computer during this USB device controller transmits this USB format image signal so far, and this control signal transmitted so far one or many controlled computers.
In further embodiment of this invention, the method for a supervisory computer comprises the following step: (a) control computer sends one with usb protocol and controls signal to a control module in one; (b) this control module exports this control signal to a switching device shifter, and this switching device shifter is coupled with a controlled computer, and this switching device shifter further sends this control signal to this controlled computer; (c) this controlled computer is exported analog image signal switching device shifter so far, and this switching device shifter further sends this analog image signal to this control module; (d) this control module is a USB format image signal with this analog image conversion of signals; And (e) this control module sends this USB format image signal in this control computer with usb protocol.
By the narration and the conjunction with figs. explanation of following preferred embodiment, purpose of the present invention, feature and advantage will be more clear.
Description of drawings
Figure 1A is the Organization Chart of a traditional calculations machine management system;
Figure 1B shows the computer management system that another is traditional;
Fig. 2 shows the Organization Chart of computer management system in one embodiment of the invention;
Fig. 3 A show middle control computer in one embodiment of the invention, control module, with the link composition of computer management device;
The middle control computer in Fig. 3 B demonstration another embodiment of the present invention and the link composition of computer management device;
Fig. 4 A shows the interface connector of control module in one embodiment of the invention;
Fig. 4 B shows the interface connector of control module in another embodiment of the present invention;
Fig. 5 shows the Organization Chart of control module in one embodiment of the invention;
Fig. 6 shows the process flow diagram of computer management method in the embodiment of the invention; And
Type of device, transmission mode and the purposes of 286 emulation of USB device controller among Fig. 7 displayed map 5 embodiment.
[primary clustering symbol description]
10 computer management systems, 280,282 communication interfaces
12 computer management devices, 284,286 peripheral controllers
14 controlled computers, 287 analog-digital converters
20 computer management systems, 2802,2822 USB connector
22 computer management devices, 2804 VGA connectors
23 switching device shifters, 2806 PS/2 connectors
24 controlled computers, 2812,2832 USB cables
28 control modules, 2836 PS/2 cables
50 storage devices
Embodiment
Fig. 2 shows an embodiment of computer management system 20 of the present invention.This system 20 comprises computer management device 22, controlled computer (for example server or large data main frame) 24, middle control computer (for example personal computer or notebook computer) 26 and control module 28.
In this embodiment, computer management device 22 comprises at least one switching device shifter 23 optionally coupling one or many controlled computers 24, and this switching device shifter 23 also can from KVM switch, multiplexer (multiplexer), and the group that formed of multiple spot switch (cross-point switch) selected.
The management system 20 of the embodiment of the invention can comprise the controlled computer 24 of a plurality of computer management devices 22 with more of connections in addition, and can daisy chain (Daisy Chain) between a plurality of computer management devices 22 or the mode of cascade (Cascade) linked to increase the number of controlled computer, but in order to clearly demonstrate the present invention, only contain a computer management device 22 and two controlled computer equipment 24 in following examples, ripe this skill person should know that the present invention does not desire to be confined to this.
Following Fig. 3 A to Fig. 3 B above-mentioned Fig. 2 that will arrange in pairs or groups illustrates different embodiments of the invention respectively, particularly computing machine management devices 22 in the computer management system 20, control module 28, and the annexation and the signal and communication mode of 26 of middle control computers.
At first, as shown in Figure 3A, computer management system 20 more comprises a control module 28.Control module 28 has first communication interface 280 and second communication interface 282, and it comprises required connector and cable, control computer 26 and computer management device 22 in coupling respectively.Yet it should be noted that in Fig. 3 A, control module 28 is positioned at outside the computer management device 22, both are devices of independent running, have housing separately and utilize cable and connect from the outside.That is for computer management device 22, this control module 28 is an external device.But in the embodiment of Fig. 3 B, control module 28 has common housing with computer management device 22, be seen as single device from outward appearance, so on function, both independently operate control module 28 and switching device shifter 23, therefore in addition, the embodiment of Fig. 3 A and Fig. 3 B is substantially similar, only is illustrated with Fig. 3 A below.
By the switching device shifter in the computer management device 22 23, in many controlled computers 24 (being shown in Fig. 2), can there be a controlled computer to be switched at every turn and carries out communication (exchanges data) with control module 28 to second communication interface 282.Second communication interface 282 can be the combined type communication interface, has the connector of plurality of specifications, for example contains USB, PS/2, VGA connector.
Further shown in Fig. 4 A, second communication interface 282 has USB connector 2822 and VGA connector 2824 simultaneously, or shown in Fig. 4 B, second communication interface 282 has PS/2 connector 2826 and VGA connector 2824 simultaneously; And first communication interface 280 preferably has more USB connector 2802 (shown in Fig. 4 A or Fig. 4 B), in order to control computer 26 in connecting.Therefore, need to connect USB connector 2802 and middle control computer 26 with a USB cable (a USB cable 2812); And connect USB connector 2822/VGA connector 2824 and computer management device 22 with another USB cable (the 2nd USB cable 2832) and VGA cable 2834.The one USB cable 2812 is that the USB connector (not shown) of A-type then is the USB connector of B-type at the other end near control module 28 at the end near middle control computer 26.Similarly, the 2nd USB cable 2832 then is the USB connector of B-type in the USB connector (not shown) that near an end of computer management device 22 is A-type at the other end near control module 28.In the embodiment shown in Fig. 4 B, then need to connect PS/2 connector 2826/VGA connector 2824 and computer management device 22 with a pair of PS/2 cable 2836 and VGA cable 2834.It should be noted that, connector that can also other kind in order to the VGA connector 2824 that transmits the analog image signal replaces, for example DVI connector or HDMI connector make control module 28 can directly receive the digital image signal from computer management device 22.So, above-mentioned VGA cable also need be replaced by DVI cable or HDMI cable.
It should be noted that, above-mentioned USB cable, PS/2 cable and cable VGA cable also can directly be extended out by the circuit board of the enclosure interior of control module 28, that is an end of above-mentioned USB, PS/2 cable and cable VGA cable is that housing by control module 28 is coated.With the 2nd USB cable is example, and its end near computer management device 22 is the USB connector of an A-type, in order to connect the usb connecting port of computer management device 22; The other end of the 2nd USB cable then can directly be welded on the circuit board of control module 28, or is connected to the circuit board of control module 28 in other electric connection mode.
The functional block diagram of the further display control module of Fig. 5 28 inside.In this embodiment, control module 28 more comprises and first communication interface 280 and second communication interface, 282 corresponding first peripheral controller 284 and second peripheral controllers 286 except that first communication interface 280 and second communication interface 282 (shown in Fig. 3 A and Fig. 3 B).。First peripheral controller 284 is preferably USB device controller (DeviceController), for example can be the CY7C68013A of Cypress Semiconductor company, the Net 2280 of PLX company or the ISP1583 of Philips company.Second peripheral controller 286 can be USB device controller, PS/2 controller or its combination.In addition, control module 28 more comprises an analog-digital converter (A/Dconverter) 287 (for example AD9983 of Analog Devices company) and processor (microcontroller) 288.Second peripheral controller 286 is coupled to computer management device 22 or switching device shifter 23 via second communication interface 282, and first peripheral controller 284 is coupled to middle control computer 26 via first communication interface 280.Analog-digital converter 287 is to be coupled to computer management device 22 via second communication interface 282, and processor 288 then is respectively coupled to peripheral controller 284 and 286 and analog-digital converter 287.In certain embodiments, first peripheral controller 284, second peripheral controller 286 and processor 288 can common implementing in the semiconductor chip, the LPC2888 of for example AST1000 of ASPEED company, or NXP company.In addition, said modules can FPGA (field programmable gate array) or the mode of CPLD (complex programmable logic assembly) implemented.
It should be noted that, in some cases, if the computer management device 22 that control module 28 is connected itself has possessed analog-digital converter, then the analog-digital converter 287 of control module 28 can omit, that is the digital image signal that computer management device 22 is exported can directly be handled by processor 288.The computer management device 22 that itself has possessed analog-digital converter can be a network-type computer management devices (KVM-Over-IP), for example by CN6000, CN8000, products such as KH1508i, KH1516i that Hongzheng Automation Science-Technology Co., Ltd provided.
Under the control of second peripheral controller 286, the analog image signal that a certain controlled computer 24 is exported (for example VGA signal of video signal) via the transmission of switching device shifter 23 in the computer management device 22 by the VGA connector 2824 (shown in Fig. 4 A or Fig. 4 B) of second communication interface 282 of control module 28 reception.Then the analog image conversion of signals that will be received via second communication interface 282 of analog-digital converter 287 is a digital image signal, and exports to processor 288.The digital image signal that processor 288 is produced analog-digital converter 287 is converted and is encoded to the signal of video signal of usb signal form, and under the control of first peripheral controller 284, USB format image signal is sent to middle control computer 26 by first communication interface 280 and USB connector 2802 (shown in Fig. 4 A or Fig. 4 B).
On the other hand, in this embodiment, in control computer 26 supervisory routine AP is installed and has a usb host controller (not icon), the control signal that control computer 26 preparation was sent during this supervisory routine AP can make (for example by cursor control signal or simple keyboard signal (numeral or letter etc.) that mouse or keyboard produced) is converted to the form of usb signal.And first peripheral controller 284 relatively is a USB device controller, and by this control signal sent of control computer 26 can by the USB connector 2802 (shown in Fig. 4 A or Fig. 4 B) of first communication interface 280 of control module 28 reception.Then under the control of second peripheral controller 286, control signal is sent to controlled computer 24 via second communication interface 282 and USB connector 2822 (shown in Fig. 4 A).On the other hand, aforementioned supervisory routine AP exports screen to for its demonstration behind the readable signal of video signal of the display card (not shown) of control computer 26 in can be converted to the signal of video signal of usb signal form by operating system.
In a preferred embodiment, first peripheral controller 284 and second peripheral controller 286 are all the USB device controller.And for middle control computer 26, first peripheral controller 284 imitates the USB device of " mass storage (Mass Storage Device) " type (class), and usb signal/other data of control signal that wherein middle control computer 26 sends and the signal of video signal of representing controlled computer 24 outputs can be by special (self-defined) SCSI instruction with flood tide transmission (Bulk Transfer) mode transmitted in both directions.
See also Fig. 7, for computer management device 22 or switch 23, second peripheral controller 286 can imitate the USB device of " human-computer interface device (HID) " type, and the USB control signal that wherein will issue computer management device 22 or switch 23 can be interrupted transmission (interrupt transfer) mode or control transmission (control transfer) mode is transmitted.
See also Fig. 3 A, Fig. 3 B and Fig. 7, middle control computer 26 has more a storage device 50, for this storage device 50 is coupled to computer management device 22 or controlled computer 24 by control module 28, make computer management device 22 can share the data of these storage device 50 inside, or make controlled computer 24 detect this storage device 50 by (enumeration) process of enumerating of USB, second peripheral controller 286 also can imitate the combined type USB device of the USB device of " Mass Storage Device " type or " HID " and " Mass StorageDevice " type, and other data data of the setting or the daily record of computer management device 22 (for example about) that wherein will issue other data (for example in order to upgrade the data of firmware) of computer management device 22 or be received from computer management device 22 can be instructed by special (self-defined) SCSI and be transmitted with the flood tide transmission mode.
On the other hand, if control module 28 is desired to receive digital image signal (just control module 28 does not need analog-digital converter) or export other data (will be illustrated in the back) to computer management device 22 from computer management device 22, then second peripheral controller 286 can imitate " HID " and combined type USB device of " Mass Storage Device " type or the USB device of " Mass Storage Device " type, the control signal that wherein will issue computer management device 22 can be interrupted transmission (interrupt transfer) mode or control transmission (control transfer) mode is transmitted, and the digital image signal that computer management device 22 is sent/other data are then transmitted with the flood tide transmission mode.In addition, processor 288 is read and write first peripheral controller 284 and second peripheral controller 286 by different address spaces, and exchange numerical data in the storage space of processor 288 and buffer zone (not icon), keyboard/mouse data for example, image data and other data (for example file data).
Fig. 6 is the process flow diagram of the inventive method embodiment, can cooperate the system and the assembly of previous institute icon, further specifies the present invention.In step 601, middle control computer 26 sends control signal (for example by cursor control signal or simple keyboard signal (numeral or letter etc.) that mouse or keyboard were produced) to control module 28 with usb protocol.Then in step 603, control module 28 is sent to computer management device 22 with control signal, switching device shifter 23 in the computer management device 22 is coupled to controlled computer 24, and control signal further sends controlled computer 24 to by this, and reaches the control purpose to controlled computer 24.
In the step 605, the switching device shifter 23 of controlled computer 24 output image signal (for example VGA analog image signal or DVI digital image signal) to the computer management device 22, and further signal of video signal is sent to control module 28.Then in step 607, control module 28 is converted to the signal of video signal of USB form with this signal of video signal, and in step 609, control computer 26 and being shown during control module 28 sends this USB format image signal to usb protocol.
In step 611, middle control computer 26 transmits a file data (for example program updates file) to control module 28 with usb protocol in addition.Then in step 613, control module 28 further exports file data to computer management device 22 with usb protocol, file data is sent to controlled computer 24 in the computer management device 22 again, reads use for controlled computer 24.
It should be noted that though the present invention is illustrated with the process flow diagram of Fig. 6, the present invention is limited to the shown order of Fig. 6.For instance, step 601-603, step 605-609, can exchange with the order of these three groups of steps of step 611-613 or carry out simultaneously.
By the embodiment more than the present invention, computer management device 22 and control module 28 can be respectively provided by the manufacturer of different (or identical).For example computer management device 22 is provided by A manufacturer and control module 28 is provided by B manufacturer.And control module 28 is a portable apparatus, user (a for example server room supvr) only need carry this control module 28 and a portable computer (for example notebook computer) to the machine room at computer management device 22 places, just can the computer management device 22 that any manufacturer provided be managed and control.Comparatively speaking, if no control module 28 of the present invention, the supervisory routine that middle control computer 26 must be installed A manufacturer to be provided could manage and control computer management device 22.
Also it should be noted that in addition, in control computer 26 not only can control one or many controlled computers 24 by computer management device 22, and middle control computer 26 can also be controlled computer management device 22 separately, for example the management and setting computer management devices 22, with computer management device 22 carry out bidirectional data exchange, for example the data to computer management device 22 back up, recover, preserve with data, and the firmware of computer management device 22 upgraded etc.These data comprise daily record (log) or some setup parameters, generally are to be stored in the flash memory of computer management device 22.Though conventional art also can back up the data of computer management device 22, recover and preserve, and the firmware of computer management device 22 is upgraded, normally by RS232 interface or network interface.Wherein the shortcoming of RS232 interface is speed slow (for example 115.2Kbps), and is not that all computer management devices all have network interface.
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. computer management system comprises at least:
One control module has one first interface and one second interface, and wherein this first interface is in order to couple control computer in;
One computer management device is coupled to this second interface and one or many controlled computers so that this one or many controlled computers can optionally be switched to this second interface;
One supervisory routine is executed in this on control computer, makes the exportable control signal of control computer in this;
Wherein this computer management device make this one or an analog image signal of many controlled computers output be output to this control module via this second interface;
Wherein this control module is to export control computer in this to behind the USB format image signal with this analog image conversion of signals, and this control module will be somebody's turn to do via this second interface in this control signal of control computer output export the computer management device to manage this computer management device and this one or many controlled computers.
2. computer management system as claimed in claim 1 is characterized in that, this control module comprises more at least:
One first peripheral controller is coupled to control computer in this via this first interface;
One second peripheral controller is coupled to this computer management device via this second interface;
One analog-digital converter is coupled to this computer management device via this second interface;
One processor is coupled to this first peripheral controller, this second peripheral controller and this analog-digital converter;
Wherein this analog-digital converter is to export this processor to behind the digital image signal with this analog image conversion of signals;
Wherein this processor makes this digital image signal be converted into this USB format image signal, and via this first peripheral controller this USB format image signal is sent to control computer in this; And
Wherein this second peripheral controller more is sent to this control signal this computer management device.
3. computer management system comprises at least:
One supervisory routine is executed in one on the control computer, makes the exportable control signal of control computer in this;
One switching device shifter is coupled to one or many controlled computers;
One control module has one first interface and one second interface, and wherein this first interface is in order to coupling control computer in, and this second interface is in order to coupling this switching device shifter so that this one or many controlled computers can optionally be switched to this second interface;
Wherein this switching device shifter make this one or an analog image signal of many controlled computers output be output to this control module via this second interface;
Wherein this control module is to export control computer in this to behind the USB format image signal with this analog image conversion of signals, and this control module will be somebody's turn to do via this second interface in a control signal of control computer output export this switching device shifter to manage this switching device shifter and this one or many controlled computers.
4. computer management system as claimed in claim 3 is characterized in that, this control module comprises more at least:
One first peripheral controller is coupled to control computer in this via this first interface;
One second peripheral controller is coupled to this computer management device via this second interface;
One analog-digital converter is coupled to this switching device shifter via this second interface;
One processor is coupled to this first peripheral controller, this second peripheral controller and this analog-digital converter;
Wherein this analog-digital converter is to export this processor to behind the digital image signal with this analog image conversion of signals;
After wherein this processor makes this digital image signal be converted into this USB format image signal, this USB format image signal is sent to control computer in this via this first peripheral controller; And
Wherein this second peripheral controller more is sent to this switching device shifter with this control signal.
5. computer management system comprises at least:
One supervisory routine is executed in one on the control computer, makes the exportable control signal of control computer in this;
One computer management device makes in this control computer couple one or many controlled computers, and this computer management device comprises more at least:
One switching device shifter so that this one or many controlled computers can optionally be switched to control computer in this;
One analog-digital converter is coupled to this switching device shifter, with this one or an analog image conversion of signals of many controlled computers output be a digital image signal:
One processor is coupled to this analog-digital converter, and makes this digital image signal be converted into a USB format image signal; And
One USB device controller is sent to control computer in this with this USB format image signal, and with this control signal be sent to this one or many controlled computers.
6. computer management system as claimed in claim 5 is characterized in that, control computer transmits a device with usb protocol and controls signal to this computer management device in this, to control, to manage or to set this computer management device.
7. computer management system as claimed in claim 5 is characterized in that, control computer and this computer management device carry out bidirectional data exchange with usb protocol in this.
8. computer management system as claimed in claim 5 is characterized in that, control computer transmits firmware upgrade data to this computer management device with usb protocol in this, upgrades with the firmware to this computer management device.
9. the method for a supervisory computer is used for a computer management system, and this method comprises the following step at least:
(a) control computer sends one with usb protocol and controls signal to a control module in one;
(b) this control module exports this control signal to a switching device shifter, and this switching device shifter is coupled with a controlled computer, and this switching device shifter further sends this control signal to this controlled computer;
(c) this controlled computer is exported an analog image signal to this switching device shifter, and this switching device shifter further sends this analog image signal to this control module;
(d) this control module is a USB format image signal with this analog image conversion of signals; And
(e) this control module sends this USB format image signal in this control computer with usb protocol.
10. method as claimed in claim 9 is characterized in that, more comprises:
(f) control computer transmits file data to a control module with usb protocol in this; And
(g) this control module exports this document data to this switching device shifter with usb protocol, and this switching device shifter sends this document data to this controlled computer.
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| CN201222250Y (en) * | 2008-06-12 | 2009-04-15 | 安国国际科技股份有限公司 | Multicomputer switching device with data transmission function between computers |
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| CN103186249A (en) * | 2011-12-30 | 2013-07-03 | 宏正自动科技股份有限公司 | Remote management system and remote management method |
| CN103186249B (en) * | 2011-12-30 | 2016-12-07 | 宏正自动科技股份有限公司 | Remote management system and remote management method |
| CN105045408A (en) * | 2015-07-13 | 2015-11-11 | 山东超越数控电子有限公司 | Notebook computer with KVM (Keyboard Video Mouse) keyboard and mouse and KVM switching method for notebook computer |
| CN105045408B (en) * | 2015-07-13 | 2017-12-08 | 山东超越数控电子股份有限公司 | A kind of notebook computer and its KVM switching methods with KVM key mouses |
| CN105681398A (en) * | 2015-12-30 | 2016-06-15 | 广东威创视讯科技股份有限公司 | KVM remote control method, encoding box and system |
| CN106095123A (en) * | 2016-06-17 | 2016-11-09 | 山东超越数控电子有限公司 | A kind of method of KVM all-in-one virtual multichannel USB key Mus equipment |
| CN110162284A (en) * | 2018-02-12 | 2019-08-23 | 宏正自动科技股份有限公司 | A kind of operating and controlling interface device and its control system |
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