CN101847133A - Switching device and multi-computer switch - Google Patents
Switching device and multi-computer switch Download PDFInfo
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- CN101847133A CN101847133A CN200910133213A CN200910133213A CN101847133A CN 101847133 A CN101847133 A CN 101847133A CN 200910133213 A CN200910133213 A CN 200910133213A CN 200910133213 A CN200910133213 A CN 200910133213A CN 101847133 A CN101847133 A CN 101847133A
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Abstract
The invention provides a switching device and a multi-computer switch. The switching device is used for connecting a host computer with a computer peripheral device and comprises a PS/2 connecting port and a controller, wherein the PS/2 connecting port is used for coupling the computer peripheral device; the computer peripheral device is provided with a PS/2 interface; the controller is used for electrically connecting the computer peripheral device through the PS/2 connecting port and comprises an identification unit; the identification unit is used for receiving a peripheral control signal of the computer peripheral device and identifying the type of the computer peripheral device according to the peripheral control signal; and the controller is used for arranging a path from the signal sent by the computer peripheral device to the host computer according the type of the computer peripheral device. The switching device can be applied to the multi-computer switch, and can automatically identify the type of the peripheral device with the PS/2 interface.
Description
Technical field
The present invention relates to a kind of switching device and multi-computer switch, particularly relate to a kind of switching device and the multi-computer switch that can discern PS/2 interface peripheral device automatically.
Background technology
In recent years along with development of science and technology, computer or its relevant apparatus, for example multi-computer switch (KVMswitch) can see through multiple peripheral device (for example keyboard or mouse) and manage and control the multiple computers main frame.Generally can be RS232 interface or PS/2 interface in order to the interface that is connected between host computer and the peripheral unit.And for a long time, the PS/2 interface is in order to peripheral devices such as keyboard and mouse are connected to one of interface standard on the host computer always.
Please refer to Fig. 5 A, it shows according to the peripheral device of prior art and the synoptic diagram of PS/2 interface.Yet, the PS/2 interface of general keyboard and mouse also can't exchange use, PS/2 keyboard 901 is connected in the PS/2 interface 902 of exclusive mouse or connectivity port (representing with green usually) afterwards, it is a PS/2 keyboard that host computer also can't be discerned it, so this PS/2 keyboard can't operate as normal.And PS/2 mouse 903 also can't be connected in the PS/2 interface 904 or the connectivity port (representing with purple usually) of exclusive keyboard, thereby causes inconvenience and the applicability that reduces peripheral device in the use.
For improving the problems referred to above, shown in Fig. 5 B, No. the 6919878th, United States Patent (USP) discloses and adds one switch control circuits 20 in the middle of controller 14 and two PS/2 Ports 10,12, in order to correctly switch controller 14 With keyboards and mouse together clock signal and data-signal.Yet (PKCLKIN～PMDATOUT) transmit the signal that keyboard and mouse are imported and exported respectively, significantly, it has increased hardware cost and wiring complexity to need at least 8 group circuits between controller 14 and the control switching circuit 20.
Summary of the invention
One of purpose of the present invention is to provide a kind of switching device, and in order to be connected between host computer and the computer peripheral apparatus, it is characterized in that: described switching device comprises:
The PS/2 Port, in order to couple described computer peripheral apparatus, described computer peripheral apparatus has the PS/2 interface; And
Controller, in order to electrically to be connected in described computer peripheral apparatus via described PS/2 Port, described controller comprises recognition unit, described recognition unit receives the peripheral control signal of described computer peripheral apparatus, and discern the kind of described computer peripheral apparatus according to described peripheral control signal, described controller is the kind according to described computer peripheral apparatus, arranges signal that described computer peripheral apparatus the sends path to described host computer.
Two of purpose of the present invention is to provide a kind of multi-computer switch, it is characterized in that: described multi-computer switch comprises:
The computer connectivity port is in order to connect host computer;
The one PS/2 connectivity port is in order to connect keyboard or mouse;
The 2nd PS/2 connectivity port is in order to connect described keyboard or described mouse;
The image connectivity port is in order to connect screen; And
User's interface is used for the user and is selected more described host computer to be controlled by described keyboard or described mouse according to path setting;
Wherein when a described PS/2 connectivity port connected described keyboard, described mouse is the more described host computer of may command after connecting described the 2nd PS/2 Port;
Wherein when a described PS/2 connectivity port connected described mouse, described keyboard is the more described host computer of may command after connecting described the 2nd PS/2 Port.
Three of purpose of the present invention is to provide a kind of multi-computer switch, it is characterized in that: described multi-computer switch comprises:
The computer connectivity port is in order to connect host computer;
The one PS/2 connectivity port is in order to connect first keyboard, second keyboard, first mouse or second mouse;
The 2nd PS/2 Port is in order to connect described first keyboard, described second keyboard, described first mouse or described second mouse;
The image connectivity port is in order to connect screen; And
User's interface is used for the user and is selected more described host computer to be controlled by described first keyboard, described second keyboard, described first mouse or described second mouse according to path setting;
Wherein when a described PS/2 connectivity port connected described first keyboard, described second keyboard, described first mouse or described second mouse be the more described host computer of may command after connecting described the 2nd PS/2 Port.
The present invention can automatically discern the kind of PS/2 interface peripheral device, and comes deal with data accordingly according to its kind.Therefore, PS/2 Port of the present invention can at random be coupled to the computer peripheral apparatus with PS/2 interface of arbitrary kind, to promote easy-to-use and applicability.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Description of drawings
Fig. 1 shows the synoptic diagram according to the switching device of one embodiment of the invention;
Fig. 2 A to Fig. 2 D shows the block schematic diagram according to switching device of the present invention, host computer and computer peripheral apparatus;
Fig. 3 shows the block schematic diagram of multi-computer switch, host computer and computer peripheral apparatus according to one embodiment of the invention;
Fig. 4 shows the process flow diagram according to the method that can discern PS/2 interface peripheral device of one embodiment of the invention;
Fig. 5 A shows according to the peripheral device of prior art and the synoptic diagram of PS/2 interface; And
Fig. 5 B shows the synoptic diagram according to the keyboard/mouse switch controller of prior art.
Embodiment
Please refer to Fig. 1 to Fig. 2 D, Fig. 1 shows the synoptic diagram according to the switching device of one embodiment of the invention, and Fig. 2 A to Fig. 2 D shows the block schematic diagram according to switching device of the present invention, host computer and computer peripheral apparatus.The switching device 100 of present embodiment can be connected between host computer 200 and the computer peripheral apparatus, and wherein computer peripheral apparatus has the PS/2 interface, for example has the keyboard or the mouse of PS/2 interface.Switching device 100 can comprise at least one PS/2 Port, controller 110 and central processing unit 130.The PS/2 connectivity port is in order to be coupled to computer peripheral apparatus, in the present embodiment, switching device 100 can be provided with a PS/2 Port 121 and the 2nd PS/2 Port 122, in order to be respectively coupled to first computer peripheral apparatus 301 and second computer peripheral apparatus 302.So be not limited thereto, in other embodiments, switching device 100 also can only be provided with a PS/2 Port or more a plurality of PS/2 Port (more than three), to be coupled to the computer peripheral apparatus of PS/2 interface.Controller 110 is that to be electrically connected at computer peripheral apparatus via the PS/2 connectivity port electrical, in order to the kind (for example keyboard or mouse) of identification computer peripheral apparatus.Central processing unit 130 is to be electrically connected at controller 110, in order to after the kind of identification computer peripheral apparatus, resolves (parse) signal that this computer peripheral apparatus transmitted according to a PS/2 communications protocol.
As depicted in figs. 1 and 2, the controller 110 of the switching device 100 of present embodiment for example is ASIC(Application Specific Integrated Circuit) (Application Specific Integrated Circuit, ASIC), field domain programmable gate array (Field-Programmable Gate Array, FPGA) or microcontroller (Micro-controller Unit, MCU), its can via PS/ 2CLK signal wire 123 and 124 and PS/ 2Data signal wire 125 and 126 be electrically connected at PS/2 Port 121 and 122.Controller 110 can comprise recognition unit 111, recognition unit 111 is in order to receive at least one peripheral control signal of computer peripheral apparatus 301,302, and discern the kind of computer peripheral apparatus 301,302 according to this peripheral control signal, wherein recognition unit 111 can be that the form cause controller 110 of firmware (Firmware) is performed.Because the peripheral control signal that different types of computer peripheral apparatus 301,302 (as keyboard and mouse) is sent is inequality, thereby recognition unit 111 can be discerned the kind of computer peripheral apparatus 301,302 according to different peripheral control signals.After the kind that identifies computer peripheral apparatus 301,302, controller 110 can be according to the kind of computer peripheral apparatus 301,302, arrange the path of computer peripheral apparatus 301,302 signals that sent to central processing unit 130, be passed to host computer 200 by central processing unit 130 again, wherein this signal can comprise data-signal, for example keyboard data signal or mouse data signal.On the other hand, the clock signal that also host computer 200 sent of central processing unit 130 is passed to computer peripheral apparatus 301,302.Therefore, no matter the kind of the computer peripheral apparatus 301,302 that a PS/2 Port 121 of switching device 100 or the 2nd PS/2 connectivity port 122 are connected is (keyboard or mouse) why, switching device 100 all can identify its kind and handle accordingly, that is the PS/2 Port 121 of the switching device 100 of present embodiment or 122 can at random be coupled to any computer peripheral apparatus with PS/2 interface (keyboard or mouse).
In the present embodiment, first computer peripheral apparatus 301 that a PS/2 Port 121 is coupled can be keyboard, and first computer peripheral apparatus 302 that the 2nd PS/2 Port 122 is coupled can be mouse; Perhaps, first computer peripheral apparatus 301 that a PS/2 Port 121 is coupled can be mouse, and first computer peripheral apparatus 302 that the 2nd PS/2 Port 122 is coupled can be keyboard.
In one embodiment, controller 110 more can transmit different clock signal (for example keyboard clock signal or mouse clock signal) according to the kind (as keyboard or mouse) of computer peripheral apparatus 301,302 to computer peripheral apparatus 301,302.
Below bright in further example computer peripheral apparatus 301,302 sends the situation that periphery controls signal to switching device 100.For example, when computer peripheral apparatus 301,302 is connected to the PS/2 Port and is powered, computer peripheral apparatus 301,302 can send the recognition unit 111 that periphery controls signal to controller 110, at this moment, keyboard can for example send " AA " control signal, and mouse can for example send " AA00 " control signal.Again, for example, when computer peripheral apparatus 301,302 receives the computer control signal (for example " FF ") that host computer 200 sent, computer peripheral apparatus 301,302 can send peripheral control signal accordingly, at this moment, keyboard can for example send " FA AA " peripheral control signal, and mouse can for example send " FAAA00 " peripheral control signal.Again, for example, when computer peripheral apparatus 301,302 is coupled to switching device 100, or when being coupled to host computer 200 via switching device 100, computer peripheral apparatus 301,302 also can send periphery accordingly and control signal to recognition unit 111.
That is, when controller 110 sends a control signal (for example power supply, send FF or F2 order etc.) to computer peripheral apparatus 301,302 o'clock, the recognition unit 111 of controller 110 can be according to computer peripheral apparatus 301, the response of 302 pairs of control signals (that is computer peripheral apparatus 301, the 302 peripheral control signals of being sent) discern computer peripheral apparatus 301,302 kind, and according to computer peripheral apparatus 301,302 kind is with computer peripheral apparatus 301,302 communications protocol that are suitable for (as PS/2 keyboard communications protocol and/or PS/2 mouse communications protocol) are come computer peripheral apparatus 301,302 carry out initialization and communication.
Please refer to Fig. 3, it shows the block schematic diagram according to multi-computer switch, host computer and the computer peripheral apparatus of one embodiment of the invention.The switching device 100 of embodiment can be provided with (built-in) in a computer apparatus (not illustrating), perhaps, can be applicable in the multi-computer switch (KVM switch) 101.When being applied to multi-computer switch (KVM switch) 101, this multi-computer switch 101 can comprise controller 110, a PS/2 Port 121, the 2nd PS/2 Port 122, central processing unit 130, computer connectivity port 140, image connectivity port 150, user's interface 160 and multiplex adapter (multiplexer) 170, and wherein a piece of wood serving as a brake to halt a carriage body 111 of earlier figures 1 can be executed on controller 110 and/or the central processing unit 130.
Still please refer to Fig. 3, PS/2 Port 121 and 122 is to be coupled to computer peripheral apparatus 301,302, and controller 110 is to be electrically connected at PS/2 Port 121 and 122, in order to the kind of identification computer peripheral apparatus 301,302.Central processing unit 130 is to be electrically connected at controller 110, in order to after the kind of identification computer peripheral apparatus 301,302, resolve (parse) computer peripheral apparatus 301 and/or 302 signals that transmitted according to a PS/2 communications protocol (PS/2 keyboard communications protocol or PS/2 mouse communications protocol).Computer connectivity port 140 is in order to connection host computer 200, and image connectivity port 150 is in order to connect screen 303.User's interface 160 is to be electrically connected to central processing unit 130, using for the user selects a certain host computer to be controlled by a PS/2 Port 121 or the 2nd PS/2 connectivity port 122 (for example keyboard or mouse) according to a path setting, wherein user's interface 160 can be screen display menu (on-screen display, and this path setting can for example be the button of option, keyboard hot key (hot-key) or the control panel of screen display menu OSD menu) or a control panel.Multiplex adapter 170 is in order to according to this path setting the signal of video signal of host computer 200 is directed to screen 303.
In one embodiment, shown in Fig. 2 A and Fig. 2 B, the computer peripheral apparatus 301,302 that a PS/2 Port 121 and the 2nd PS/2 Port 122 are coupled can for example be a keyboard and a mouse.At this moment, keyboard and mouse can at random be coupled to a PS/2 Port 121 or the 2nd PS/2 Port 122.For example, a PS/2 Port 121 is to be coupled to keyboard, and the 2nd PS/2 Port 122 is to be coupled to mouse (shown in Fig. 2 A); Perhaps, a PS/2 Port 121 is to be coupled to mouse, and the 2nd PS/2 Port 122 is to be coupled to keyboard (shown in Fig. 2 B).
Again, shown in Fig. 2 C and Fig. 2 D, in another embodiment, the computer peripheral apparatus 301,302 that a PS/2 Port 121 and the 2nd PS/2 Port 122 are coupled can for example be two keyboards or two mouses.For example, a PS/2 Port 121 and the 2nd PS/2 Port 122 are to be coupled to two keyboards (shown in Fig. 2 C); Perhaps, a PS/2 Port 121 and the 2nd PS/2 Port 122 are to be coupled to two mouses (shown in Fig. 2 D).
Please refer to Fig. 1 and Fig. 4, Fig. 4 shows the process flow diagram according to the method that can discern PS/2 interface peripheral device of one embodiment of the invention.The relevant detailed step that can discern the method for PS/2 interface peripheral device of the present invention is described below:
Therefore, switching device of the present invention can automatically be discerned the kind of peripheral device with the method that can discern PS/2 interface peripheral device and corresponding multi-computer switch thereof, and handles the data of peripheral device accordingly according to the kind of peripheral device.Therefore, PS/2 Port of the present invention can at random be coupled to the computer peripheral apparatus with PS/2 interface of arbitrary kind, to promote easy-to-use and applicability.
In sum; though the present invention discloses as above with preferred embodiment; but above preferred embodiment is not in order to restriction the present invention; those of ordinary skill in the art; without departing from the spirit and scope of the present invention; all can do various changes and retouching, so protection scope of the present invention is as the criterion with the scope that claim defines.
Claims (10)
1. switching device, in order to be connected between host computer and the computer peripheral apparatus, it is characterized in that: described switching device comprises:
The PS/2 Port, in order to couple described computer peripheral apparatus, described computer peripheral apparatus has the PS/2 interface; And
Controller, in order to electrically to be connected in described computer peripheral apparatus via described PS/2 Port, described controller comprises recognition unit, described recognition unit receives the peripheral control signal of described computer peripheral apparatus, and discern the kind of described computer peripheral apparatus according to described peripheral control signal, described controller is the kind according to described computer peripheral apparatus, arranges signal that described computer peripheral apparatus the sends path to described host computer.
2. switching device according to claim 1, it is characterized in that: more comprise central processing unit, it is electrically connected at described controller, in order to after the kind of the described computer peripheral apparatus of identification, resolves the described signal that described computer peripheral apparatus transmits according to the PS/2 communications protocol.
3. switching device according to claim 1 is characterized in that: when described computer peripheral apparatus was coupled to described switching device, described computer peripheral apparatus sent described periphery and controls signal to described recognition unit.
4. switching device according to claim 1 is characterized in that: when described computer peripheral apparatus was powered, described computer peripheral apparatus sent described periphery and controls signal to described recognition unit.
5. multi-computer switch, it is characterized in that: described multi-computer switch comprises:
The computer connectivity port is in order to connect host computer;
The one PS/2 connectivity port is in order to connect keyboard or mouse;
The 2nd PS/2 connectivity port is in order to connect described keyboard or described mouse;
The image connectivity port is in order to connect screen; And
User's interface is used for the user and is selected more described host computer to be controlled by described keyboard or described mouse according to path setting;
Wherein when a described PS/2 connectivity port connected described keyboard, described mouse is the more described host computer of may command after connecting described the 2nd PS/2 Port;
Wherein when a described PS/2 connectivity port connected described mouse, described keyboard is the more described host computer of may command after connecting described the 2nd PS/2 Port.
6. multi-computer switch according to claim 5 is characterized in that: more comprising controller, is to be connected in described keyboard or described mouse in order to discern a described PS/2 connectivity port.
7. multi-computer switch according to claim 6 is characterized in that: described controller is that to discern a described PS/2 connectivity port according to the communications protocol of PS/2 be to be connected in described keyboard or described mouse.
8. multi-computer switch according to claim 5 is characterized in that: more comprise central processing unit, in order to after the described PS/2 connectivity port of identification is to be connected in described keyboard, resolve the signal that described keyboard transmits according to PS/2 keyboard communications protocol.
9. multi-computer switch according to claim 5 is characterized in that: more comprise central processing unit, and after a described PS/2 connectivity port is to be connected in described mouse in identification, the signal that is transmitted according to the described mouse of PS/2 mouse communication protocol analysis.
10. multi-computer switch, it is characterized in that: described multi-computer switch comprises:
The computer connectivity port is in order to connect host computer;
The one PS/2 connectivity port is in order to connect first keyboard, second keyboard, first mouse or second mouse;
The 2nd PS/2 Port is in order to connect described first keyboard, described second keyboard, described first mouse or described second mouse;
The image connectivity port is in order to connect screen; And
User's interface is used for the user and is selected more described host computer to be controlled by described first keyboard, described second keyboard, described first mouse or described second mouse according to path setting;
Wherein when a described PS/2 connectivity port connected described first keyboard, described second keyboard, described first mouse or described second mouse be the more described host computer of may command after connecting described the 2nd PS/2 Port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910133213A CN101847133A (en) | 2009-03-25 | 2009-03-25 | Switching device and multi-computer switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910133213A CN101847133A (en) | 2009-03-25 | 2009-03-25 | Switching device and multi-computer switch |
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| CN101847133A true CN101847133A (en) | 2010-09-29 |
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| CN200910133213A Pending CN101847133A (en) | 2009-03-25 | 2009-03-25 | Switching device and multi-computer switch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102945083A (en) * | 2012-11-19 | 2013-02-27 | 北京易艾斯德科技有限公司 | Keyboard interface switching device |
| CN103472903A (en) * | 2012-06-06 | 2013-12-25 | 泰山医学院 | Keyboard-control-based energy-saving timing control device for public searching machine |
| CN109342774A (en) * | 2018-10-09 | 2019-02-15 | 国网湖南省电力有限公司 | Interconnecting device is used in a kind of test of line feed terminals |
-
2009
- 2009-03-25 CN CN200910133213A patent/CN101847133A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103472903A (en) * | 2012-06-06 | 2013-12-25 | 泰山医学院 | Keyboard-control-based energy-saving timing control device for public searching machine |
| CN102945083A (en) * | 2012-11-19 | 2013-02-27 | 北京易艾斯德科技有限公司 | Keyboard interface switching device |
| CN102945083B (en) * | 2012-11-19 | 2016-04-13 | 北京易艾斯德科技有限公司 | Keyboard interface switching device shifter |
| CN109342774A (en) * | 2018-10-09 | 2019-02-15 | 国网湖南省电力有限公司 | Interconnecting device is used in a kind of test of line feed terminals |
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Application publication date: 20100929 |