CN106484651A - Usb switching device and method - Google Patents
Usb switching device and method Download PDFInfo
- Publication number
- CN106484651A CN106484651A CN201610921465.XA CN201610921465A CN106484651A CN 106484651 A CN106484651 A CN 106484651A CN 201610921465 A CN201610921465 A CN 201610921465A CN 106484651 A CN106484651 A CN 106484651A
- Authority
- CN
- China
- Prior art keywords
- usb
- signal
- switching
- intranet
- network state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4004—Coupling between buses
- G06F13/4022—Coupling between buses using switching circuits, e.g. switching matrix, connection or expansion network
Abstract
USB switching device and method, are related to USB handoff technique field.The present invention is to solve USB peripheral and changing between Intranet and outer net to need to plug substantial amounts of USB peripheral, the problem of complex operation.The ARM microcontroller of the present invention, is set to gather and judge USB switching signal；USB power source closing unit, the usb signal power remove under network state before being set to will be switched according to USB switching signal；USB switch unit, is set to for network state before switching to switch to network state after switching；USB power source onunit, the usb signal power supply conducting under network state after being set to will be switched according to USB switching signal.It is used for the internal, external network switching of USB peripheral.
Description
Technical field
The present invention relates to USB switching device and method.Belong to USB handoff technique field.
Background technology
The existing information system of large enterprise be divided between independent Intranet and outer net, and Intranet and outer net physics every
From in order to meet Intranet and the requirement of outer net working environment simultaneously, staff needs individually to be equipped with two computers, connects respectively
To Intranet and outer net, and need keyboard and mouse and display to be separately configured to two computers, rely on every computer respectively
Keyboard and mouse and display computer is operated.According further to different operating demand in addition it is also necessary to USB flash disk, USB are separately configured
The computer peripheral equipments such as printer, USB scanner, USB handwriting pad, due to physical isolation characteristic between Intranet and outer net, computer
Peripheral hardware cannot use network share, and frequently transfer plug between Intranet and outer net computer is substantial amounts of for staff's needs
USB peripheral, and the cable winds thus bringing, bring the waste of great manpower and the inconvenience of work aspect.
Content of the invention
The present invention is the operation in order to solve USB peripheral and change between Intranet and outer net to need to plug substantial amounts of USB peripheral
Complicated problem.USB switching device and method are now provided.
According to an aspect of the invention, it is provided USB switching device, this device includes：
ARM microcontroller, is set to gather and judge USB switching signal；
USB power source closing unit, the usb signal power supply under network state before being set to will be switched according to USB switching signal
Turn off；
USB switch unit, is set to for network state before switching to switch to network state after switching；
USB power source onunit, the usb signal power supply under network state after being set to will be switched according to USB switching signal
Conducting.
Preferably, described USB switching signal is：Outer net is switched to the signal of Intranet or Intranet switched to the letter of outer net
Number.
Preferably, USB switch unit adopts single-pole double-throw switch (SPDT) to realize.
Preferably, when USB power source closing unit is Intranet USB driver element, USB power source onunit drives for outer net USB
Moving cell；When USB power source closing unit is outer net USB driver element, USB power source onunit is Intranet USB driver element.
Preferably, Intranet USB driver element and outer net USB driver element are all realized using usb hub.
According to another aspect of the present invention, there is provided USB changing method, including：
Gather and judge USB switching signal；
Usb signal power remove under network state before being switched according to USB switching signal；
Network state before switching is switched to network state after switching；
Usb signal power supply conducting under network state after being switched according to USB switching signal.
Preferably, described USB switching signal is：Outer net is switched to the signal of Intranet or Intranet switched to the letter of outer net
Number.
Preferably, the usb signal power remove under network state and being cut according to USB before being switched according to USB switching signal
The usb signal power supply conducting changed under network state after signal will switch all connects external equipment realization using usb hub.
Beneficial effects of the present invention are：First USB peripheral power supply circuits are disconnected, USB power supply circuits are switched, completes USB
Internal, external network switching control flow process.In addition, USB power source closing unit in the present invention and USB power source onunit are all using USB
Hub is realized, and usb hub connects external USB equipment by USB port, thus realizing the internal, external network of external equipment is cut
Change it is allowed to staff is in the case of only using single set keyboard, mouse and display, need not install soft in computer
Part is it becomes possible to be switched fast between the video signal of Intranet and outer net computer.Simultaneously also can Windows,
Work on the several operation systems platform such as Linux, UNIX or MacOS, and support 4K UHD (3840 × 2160) ultra high-definition image quality
Display handoff functionality, to meet the switching use demand to 4K display for the information system of large enterprise.
Brief description
Fig. 1 is the theory diagram of USB switching device of the present invention；
Fig. 2 is the flow chart of USB changing method of the present invention.
Specific embodiment
Specific embodiment one：Illustrate present embodiment with reference to Fig. 1, the USB switching device described in present embodiment,
In actual applications, user needs Intranet USB that the USB cable of Intranet and outer net computer is respectively connecting in the present invention to drive
Moving cell and outer net USB driver element, wherein, Intranet USB driver element adopts a usb hub to connect external equipment and realizes
The USB of Intranet is driven, outer net USB driver element adopts another usb hub to connect external equipment and realizes the USB to outer net
Drive, when needing outside USB device is realized Intranet or outer net control, then utilize ARM microcontroller to USB switching device
Middle transmission switching signal, contains the information being outer net (Intranet) switches to Intranet (outer net) in this switching signal.
USB switching device adopts USB switch to realize.USB switch receives switching signal and judges switching type
Afterwards, will disconnect corresponding to the signal power source pin of outer net (Intranet), then will all correspond to the signal pins of outer net (Intranet)
All switch to Intranet (outer net) signal pins.
The work of above-mentioned switching signal can be realized using single-pole double-throw switch (SPDT).This switch can also pass through Control
Disconnect or turn on.
Specific embodiment two：Illustrate present embodiment with reference to Fig. 2, the USB changing method described in present embodiment,
In present embodiment, when needing external equipment is realized Intranet or outer net control, then cut to USB using ARM microcontroller
Send switching signal in changing device, in this switching signal, contain the information being outer net (Intranet) is switched to Intranet (outer net).
Judge the type of above-mentioned switching signal, when the type of switching signal is that outer net (Intranet) is switched to Intranet (outer net), will be right
Should disconnect in the signal power source of outer net (Intranet), then the signal type all corresponding to outer net (Intranet) all be switched to interior
The signal type of net (outer net).
After outer net (Intranet) signal is switched to Intranet (outer net) signal, then usb signal under conducting Intranet (outer net) state
Power supply, completes the intranet and extranet switching of usb signal.
Claims (8)
1.USB switching device is it is characterised in that this device includes：
ARM microcontroller, is set to gather and judge USB switching signal；
USB power source closing unit, the usb signal power remove under network state before being set to will be switched according to USB switching signal；
USB switch unit, is set to for network state before switching to switch to network state after switching；
USB power source onunit, the usb signal power supply conducting under network state after being set to will be switched according to USB switching signal.
2. USB switching device according to claim 1 is it is characterised in that described USB switching signal is：Outer net is switched
Signal for Intranet or the signal that Intranet is switched to outer net.
3. USB switching device according to claim 1 is it is characterised in that USB switch unit adopts single-pole double-throw switch (SPDT) real
Existing.
4. USB switching device according to claim 1 is it is characterised in that USB power source closing unit drives for Intranet USB
During unit, USB power source onunit is outer net USB driver element；When USB power source closing unit is outer net USB driver element,
USB power source onunit is Intranet USB driver element.
5. USB switching device according to claim 1 is it is characterised in that Intranet USB driver element and outer net USB drive
Unit is all realized using usb hub.
6.USB changing method is it is characterised in that the method includes herein below：
Gather and judge USB switching signal；
Usb signal power remove under network state before being switched according to USB switching signal；
Network state before switching is switched to network state after switching；
Usb signal power supply conducting under network state after being switched according to USB switching signal.
7. USB changing method according to claim 6 is it is characterised in that described USB switching signal is：Outer net is switched
Signal for Intranet or the signal that Intranet is switched to outer net.
8. USB changing method according to claim 6 is it is characterised in that network-like before being switched according to USB switching signal
Usb signal power supply conducting under usb signal power remove under state and network state after being switched according to USB switching signal is all adopted
Connect external equipment with usb hub to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610921465.XA CN106484651A (en) | 2016-10-21 | 2016-10-21 | Usb switching device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610921465.XA CN106484651A (en) | 2016-10-21 | 2016-10-21 | Usb switching device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106484651A true CN106484651A (en) | 2017-03-08 |
Family
ID=58270440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610921465.XA Pending CN106484651A (en) | 2016-10-21 | 2016-10-21 | Usb switching device and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN106484651A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019210681A1 (en) * | 2018-05-03 | 2019-11-07 | 广州视源电子科技股份有限公司 | Smart tablet, channel switching method, and computer readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101083669A (en) * | 2007-07-10 | 2007-12-05 | 梁雁文 | Computer network isolated system and its control and switch method |
| CN201114132Y (en) * | 2007-07-10 | 2008-09-10 | 梁雁文 | Computer network isolated system |
| CN202495044U (en) * | 2012-01-06 | 2012-10-17 | 北京奇策科技有限公司 | USB interface isolation control system for multi-security-domain computer |
| TW201308061A (en) * | 2011-08-12 | 2013-02-16 | Acer Inc | USB charging devices, and methods thereof |
| CN202887163U (en) * | 2012-09-24 | 2013-04-17 | 甘肃省电力公司信息通信公司 | Switching device of internal and external network physical isolation computer |
-
2016
- 2016-10-21 CN CN201610921465.XA patent/CN106484651A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101083669A (en) * | 2007-07-10 | 2007-12-05 | 梁雁文 | Computer network isolated system and its control and switch method |
| CN201114132Y (en) * | 2007-07-10 | 2008-09-10 | 梁雁文 | Computer network isolated system |
| TW201308061A (en) * | 2011-08-12 | 2013-02-16 | Acer Inc | USB charging devices, and methods thereof |
| CN202495044U (en) * | 2012-01-06 | 2012-10-17 | 北京奇策科技有限公司 | USB interface isolation control system for multi-security-domain computer |
| CN202887163U (en) * | 2012-09-24 | 2013-04-17 | 甘肃省电力公司信息通信公司 | Switching device of internal and external network physical isolation computer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019210681A1 (en) * | 2018-05-03 | 2019-11-07 | 广州视源电子科技股份有限公司 | Smart tablet, channel switching method, and computer readable storage medium |
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Application publication date: 20170308 |