CN102945080A - Keyboard, video, mouse (KVM) switch - Google Patents
Keyboard, video, mouse (KVM) switch Download PDFInfo
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- CN102945080A CN102945080A CN2011102344024A CN201110234402A CN102945080A CN 102945080 A CN102945080 A CN 102945080A CN 2011102344024 A CN2011102344024 A CN 2011102344024A CN 201110234402 A CN201110234402 A CN 201110234402A CN 102945080 A CN102945080 A CN 102945080A
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Abstract
The invention discloses a keyboard, video, mouse (KVM) switch which comprises a plurality of host connecting ports, a device connecting port and a routing unit, wherein the host connecting ports meet a communication standard and are used for being connected with a plurality of hosts; the device connecting port is used for being connected with a peripheral device; the routing unit is coupled with at least one host and the peripheral device through the plurality of host connecting ports and the device connecting port, so as to enable signals to be transmitted between the hosts and the peripheral device according to the communication standard; and besides, the routing unit receives commands meeting the communication standard from each host, stores an address specified by each host in the commands, plays a peripheral device with the address for each host according to the communication standard and responds to the commands.
Description
Technical field
The invention relates to a kind of multiple host switch (KVM switch), and particularly relevant for a kind of multiple host switch of supporting the particular communication standard.
Background technology
So-called multiple host switch, its English name are KVM Switch, and wherein KVM is keyboard (keyboard), video (video) and mouse (mouse) three's abbreviation.As its name suggests, the multiple host switch allows the user control many computing machines by one group of keyboard, display and mouse.
Multiple host switch in the market has two kinds.The first is electronic type switcher, mostly manufactures independently compact electronic device, is connected between one group of keyboard, display and mouse and many computing machines.Which platform computing machine the switch that the user can operate on the switch is connected to selection with keyboard, display and mouse.The second is the network type switch, and this switch is software normally.This software is installed on the computing machine, just can uses this software to login another computing machine by network connectivity, then use keyboard, display and the mouse of last computing machine that a rear computing machine is carried out Long-distance Control.
Summary of the invention
The invention provides a kind of multiple host switch, adopt universal serial bus (Universal Serial Bus is called for short USB) framework.The connection wire of USB is more cheap than the connection wire of traditional electrical minor switch, and USB can plug and play, and hardware installation is simple and easy, and is more more convenient than network type switch in the use.
The present invention proposes a kind of multiple host switch, comprises a plurality of main frames connectivity port, device connectivity port and a routing unit.Above-mentioned main frame connectivity port meets a communication standard, in order to connect a plurality of main frames.The device connectivity port is in order to connect a peripheral unit.Routing unit couples at least one above-mentioned main frame and above-mentioned peripheral unit by above-mentioned a plurality of main frames connectivity port and device connectivity port, so that carry out the signal transmission according to above-mentioned communication standard between above-mentioned main frame and the peripheral unit.In addition, routing unit receives the order that meets above-mentioned communication standard from each above-mentioned main frame, store the address of each above-mentioned main frame appointment in mentioned order, above-mentioned main frame is played the part of the peripheral unit with address above mentioned according to above-mentioned communication standard, and the response mentioned order.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphic being described in detail below.
Description of drawings
Fig. 1 is the schematic diagram according to a kind of multiple host switch of one embodiment of the invention.
Fig. 2 is the schematic diagram according to a kind of multiple host switch of another embodiment of the present invention.
Fig. 3 and Fig. 4 are the application schematic diagram according to a kind of multiple host switch of one embodiment of the invention.
[main element label declaration]
1～4: video pictures
100: the multiple host switch
101～104: main frame
111～114: the main frame connectivity port
121～124:USB connectivity port
130: routing unit
131: the order receiver
132: the path resolver
141,142: the device connectivity port
150: switching device shifter
161: peripheral unit
162: display
200: the multiple host switch
221～224:USB connectivity port
310: divided frame
410: PIP
Embodiment
Fig. 1 is the schematic diagram according to a kind of multiple host switch 100 of one embodiment of the invention.Multiple host switch 100 comprises four main frame connectivity ports 111～114, four usb connecting ports 121～124, routing unit 130, device connectivity port 141,142 and switching device shifter 150.Main frame connectivity port 111～114 connects respectively main frame 101～104, and usb connecting port 121～124 also connects respectively main frame 101～104.Main frame 101～104 can be the electronic installation of the served as usb host (host) of mobile phone, personal digital assistant (personal digitalassistant is called for short PDA), notebook computer or desktop PC and so on.Device connectivity port 141 is used for connecting the peripheral units such as keyboard, mouse or display with being connected.In the present embodiment, device connectivity port 141 connects peripheral unit 161, and device connectivity port 142 connects display 162.Peripheral unit 161 can be keyboard or mouse.The main frame that each connectivity port of multiple host switch 100 is corresponding with it or peripheral unit available signal transmission line are connected to each other.
Although the multiple host switch 100 of Fig. 1 comprises four main frame connectivity ports, four usb connecting ports and two device connectivity ports, but the present invention does not limit the quantity of above various connectivity ports.In other embodiment of the present invention, the visual application demand of the quantity of above various connectivity ports and elasticity adjustment.
For example, if the user selects main frame 103 is coupled to peripheral unit, then path resolver 132 is opened main frame 103 to the interface channel of peripheral unit 161 and display 162, and all the other main frames beyond the Shutdown Hosts 103 are to the interface channel of peripheral unit 161 and display 162.Path resolver 132 couples main frame 103 and display 162 by usb connecting port 123 and device connectivity port 142, and couples main frame 103 and peripheral unit 161 by main frame connectivity port 113 and device connectivity port 141.By this, main frame 103 can carry out the multi-signal transmission with peripheral unit 161 and display 162.
In this enforcement, peripheral unit 161 can be keyboard, mouse, trace ball, or in conjunction with the device of keyboard and mouse function (for example keyboard of subsidiary trace ball), so can be via main frame connectivity port 113 transmission keyboard signals, mouse signal, genetic system between main frame 103 and the peripheral unit 161.On the other hand, can be via usb connecting port 123 transmission of video crossfires (video stream) between main frame 103 and the display 162, also can transmit for example display control signal of user's function screen control window generation when (on-screen display is called for short OSD).If display 162 subsidiary Music centre loudspeakers also can transmission of audio crossfire (audio stream) between main frame 103 and the display 162.If change display 162 into as peripheral unit 161 input media, perhaps display 162 is the peripherals that comprises keyboard and mouse, then also can transmit keyboard signal, mouse signal, genetic system between main frame 103 and the display 162.
Above explanation is take main frame 103 as example, and other main frame can the rest may be inferred.Usb connecting port 121～124 must use the USB transmission line to connect main frame 101～104, so transmission of the video streaming signal between main frame 101～104 and the display 162, at least in main frame 101～104 and usb connecting port 121～124 these sections, be to carry out the signal transmission with USB.
Main frame connectivity port 111～114 can meet the USB specification, or meets other specification, the PS2 specification that peripheral units such as keyboard and mouse is commonly used.The specification of installing connectivity port 141 and 142 will not limit, and can be USB or PS2.The device connectivity port that connects display also can meet video graphics array (Video Graphics Array, be called for short VGA) or the video standard at high picture quantity multimedia interface (High-Definition Multimedia Interface is called for short HDMI) and so on.Each installs the connectivity port can meet identical or different communication standard.Device connectivity port 141 and main frame connectivity port 111～114 also can meet identical or different communication standard.
If certain peripheral unit of connecting of device connectivity port is supported USB, then order receiver 131 to be forwarded to this peripheral unit from the USB order of main frame, and the response of using this peripheral unit is with the response mentioned order.
Fig. 2 is the schematic diagram according to a kind of multiple host switch 200 of another embodiment of the present invention.Multiple host switch 200 connects main frame 101～104 with usb connecting port 221～224 respectively.Signal transmission between main frame 101～104 and peripheral unit 161 and the display 162 in main frame 101～104 and usb connecting port 221～224 these sections, is to carry out with USB at least.The remainder of multiple host switch 200 is identical with multiple host switch 100.
Fig. 3 is the application schematic diagram according to the multiple host switch 100 of one embodiment of the invention.For simplicity of illustration, Fig. 3 only illustrates multiple host switch 100 path resolver 132 and switching device shifter 150 wherein.In this embodiment, the user can operate switching device shifter 150 to set two son set of main frame 101～104, and wherein the second subclass is the subclass of the first subclass.Switching device shifter 150 produces switching signal according to user's operation, and path resolver 132 is chosen two above-mentioned son set according to switching signal.Path resolver 132 is opened the first subclass to the interface channel of display 162, and closes the first subclass main frame in addition to the interface channel of display 162, makes and can carry out the usb signal transmission between the first subclass and the display 162.In the present embodiment, the first subclass comprises main frame 101～104, and above-mentioned usb signal transmission comprises the video pictures of each main frame output of the first subclass.Path resolver 132 forms divided frame 310 with above-mentioned video pictures, and divided frame 310 is sent to display 162 for demonstration.Display 162 shown sprites 1～4 are respectively the video pictures of main frame 101～104 outputs.
First subclass of the present embodiment comprises whole main frames, and in other embodiments of the invention, the first subclass can only comprise the part main frame.
In addition, path resolver 132 is opened the second subclass to the interface channel of peripheral unit 161, and closes the second subclass main frame in addition to the interface channel of peripheral unit 161, makes and can carry out the signal transmission between the second subclass and the peripheral unit 161.Generally speaking, peripheral unit 161 is the input medias such as mouse or keyboard, the second subclass only comprise main frame 101～104 one of them.In some special application situation, the second subclass can comprise main frame 101～104 a plurality of main frames wherein.That is to say, via the setting of switching device shifter 150, can allow a plurality of main frames of peripheral unit 161 synchro control, its control is the result can be simultaneously displayed in a plurality of sprites of divided frame 310.
Although Fig. 3 and Fig. 4 illustrate multiple host switch 100, in other embodiment of the present invention, can replace with multiple host switch 200.
The multiple host switch 100 and 200 of above embodiment is to design in order to support USB especially, in other embodiment of the present invention, USB can be changed into other similar communication standard.
In sum, multiple host switch of the present invention transmits with the signal that the USB framework carries out between main frame and the peripheral unit, is a kind of brand-new framework.Multiple host switch of the present invention uses the USB transmission line to connect main frame, more saves cost than the transmission line of traditional electrical minor switch.Because USB can plug and play, multiple host switch of the present invention is being installed and is being used easier than traditional network type switch.
Although the present invention discloses as above with embodiment; so it is not to limit the present invention; have in the technical field under any and usually know the knowledgeable; without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is as the criterion when looking appended the claim scope person of defining.
Claims (12)
1. multiple host switch comprises:
A plurality of the first main frame connectivity ports meet one first communication standard, in order to connect a plurality of main frames;
One first device connectivity port is in order to connect one first peripheral unit; And
One routing unit, couple at least one above-mentioned main frame and this first peripheral unit by above-mentioned a plurality of the first main frame connectivity ports and this first device connectivity port, so that carry out first signal transmission according to this first communication standard between above-mentioned main frame and this first peripheral unit; This routing unit receives the order that meets this first communication standard from each above-mentioned main frame, store the address of each above-mentioned main frame appointment in mentioned order, above-mentioned main frame is played the part of peripheral unit and the response mentioned order with address above mentioned according to this first communication standard.
2. multiple host switch according to claim 1, wherein this first signal transmit at least transmission of video crossfire, audio frequency crossfire, display control signal, keyboard signal and mouse signal wherein it
3. multiple host switch according to claim 1, wherein this routing unit also comprises:
One order receiver, receive mentioned order, store address above mentioned, according to this first communication standard each above-mentioned main frame is played the part of the peripheral unit with this specified address of this main frame, record respectively the state of this peripheral unit that each above-mentioned main frame is played the part of, and according to address above mentioned and above-mentioned condition responsive mentioned order; And
One path resolver, couple this order receiver, choose a subclass of above-mentioned a plurality of main frames, open this subclass to the interface channel of this first peripheral unit, close this subclass above-mentioned main frame in addition to the interface channel of this first peripheral unit, so that carry out this first signal transmission according to this first communication standard between this subclass and this first peripheral unit.
4. multiple host switch according to claim 3 wherein should be transmitted mentioned order to this first peripheral unit by order receiver, and the response of using this first peripheral unit is with the response mentioned order.
5. multiple host switch according to claim 3 also comprises:
One switching device shifter couples this path resolver, switches signal according to a user operation generation one, and wherein this path resolver is chosen this subclass according to this switching signal.
6. multiple host switch according to claim 3, wherein this first peripheral unit is display, this first signal transmission comprises the video pictures of each main frame output of this subclass, this path resolver forms a divided frame with above-mentioned video pictures, and this divided frame is sent to this first peripheral unit for demonstration.
7. multiple host switch according to claim 3, wherein this first peripheral unit is display, this first signal transmission comprises one first picture and one second picture of this subclass output, this path resolver forms a PIP with this first picture and this second picture, and this PIP is sent to this first peripheral unit for demonstration, this first picture is arranged in this PIP, and this second picture is arranged in this first picture.
8. multiple host switch according to claim 1, wherein this first communication standard is universal serial bus.
9. multiple host switch according to claim 1, wherein this first device connectivity port meets this first communication standard.
10. multiple host switch according to claim 1, wherein this first device connectivity port meets one second communication standard, and this second communication standard is different from this first communication standard.
11. multiple host switch according to claim 1 also comprises:
A plurality of the second main frame connectivity ports meet one second communication standard, in order to connect above-mentioned a plurality of main frame; And
One second device connectivity port, in order to connect one second peripheral unit, wherein this routing unit couples at least one above-mentioned main frame and this second peripheral unit by above-mentioned a plurality of the second main frame connectivity ports and this second device connectivity port, so that carry out secondary signal transmission between above-mentioned main frame and this second peripheral unit, this secondary signal transmission transmit at least keyboard signal and mouse signal one of them.
12. multiple host switch according to claim 11 also comprises:
One switching device shifter, couple this routing unit, operation according to a user produces a switching signal, wherein this routing unit is chosen one first subclass of above-mentioned a plurality of main frames according to this switching signal, and choose one second subclass of this first subclass according to this switching signal, this routing unit is opened this first subclass to the interface channel of this first peripheral unit, close this first subclass above-mentioned main frame in addition to the interface channel of this first peripheral unit, so that carry out this first signal transmission according to this first communication standard between this first subclass and this first peripheral unit, this routing unit is opened this second subclass to the interface channel of this second peripheral unit, close this second subclass above-mentioned main frame in addition to the interface channel of this second peripheral unit, so that carry out this secondary signal transmission between this second subclass and this second peripheral unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102344024A CN102945080A (en) | 2011-08-16 | 2011-08-16 | Keyboard, video, mouse (KVM) switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102344024A CN102945080A (en) | 2011-08-16 | 2011-08-16 | Keyboard, video, mouse (KVM) switch |
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| Publication Number | Publication Date |
|---|---|
| CN102945080A true CN102945080A (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011102344024A Pending CN102945080A (en) | 2011-08-16 | 2011-08-16 | Keyboard, video, mouse (KVM) switch |
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| CN110432655A (en) * | 2019-09-12 | 2019-11-12 | 深圳市鹿为科技有限公司 | Multifunction display increases accepting rack |
| CN111897753A (en) * | 2019-05-06 | 2020-11-06 | 旺玖科技股份有限公司 | USB host-to-host chip |
| CN113971939A (en) * | 2020-07-24 | 2022-01-25 | 技嘉科技股份有限公司 | Display system and display device |
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| CN101788964A (en) * | 2009-01-22 | 2010-07-28 | 均昂实业有限公司 | Automatic correspondence updating computer switching device |
| US20110047306A1 (en) * | 2009-06-15 | 2011-02-24 | Adder Technology Limited | Computer input switching device |
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| CN101788964A (en) * | 2009-01-22 | 2010-07-28 | 均昂实业有限公司 | Automatic correspondence updating computer switching device |
| US20110047306A1 (en) * | 2009-06-15 | 2011-02-24 | Adder Technology Limited | Computer input switching device |
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Cited By (3)
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| CN111897753A (en) * | 2019-05-06 | 2020-11-06 | 旺玖科技股份有限公司 | USB host-to-host chip |
| CN110432655A (en) * | 2019-09-12 | 2019-11-12 | 深圳市鹿为科技有限公司 | Multifunction display increases accepting rack |
| CN113971939A (en) * | 2020-07-24 | 2022-01-25 | 技嘉科技股份有限公司 | Display system and display device |
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Application publication date: 20130227 |