CN201149696Y - USB concentrator with delay control - Google Patents
USB concentrator with delay control Download PDFInfo
- Publication number
- CN201149696Y CN201149696Y CNU200820078791XU CN200820078791U CN201149696Y CN 201149696 Y CN201149696 Y CN 201149696Y CN U200820078791X U CNU200820078791X U CN U200820078791XU CN 200820078791 U CN200820078791 U CN 200820078791U CN 201149696 Y CN201149696 Y CN 201149696Y
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Abstract
The utility model discloses a USB hub with the function of time delay control, which belongs to the information security field. The USB hub comprises an upstream USB interface connection with an upstream USB device, a downstream USB interface connected with a downstream USB device, a hub module connected with the upstream USB interface and the downstream USB interface, a switch module which is in serial connection between the upstream USB interface and the hub module or between the downstream USB interface and the hub module, and is used for controlling the connection or disconnection of the upstream USB interface and the downstream USB interface and a time delay module connected with the switch module and used for controlling the timing connection and disconnection of the switch module. When the USB device is not used, the USB hub has no need to be pulled out; the user can set the using time of the USB bus or each branch; when the using time exceeds, the time delay switch device can disconnect the connection of the USB bus or each branch automatically; the user can set the automatic recovery time; the connection can be rebuilt when the recovery time reaches, enabling the USB device to be safer, more reliable and more convenient in application.
Description
Technical field
The present invention relates to information security field, relate in particular to a kind of usb hub with time-delay control.
Background technology
USB (universal serial bus) (Universal Serial Bus is called for short USB) is a kind of new interface technology that is applied in the computing machine communication field.These several years, along with popularizing of the PC of a large amount of support USB, the standard interface that USB progressively becomes computing machine was trend of the times.
Hub provides two main functions, and the one, repeater (Repeater): be used for the data broadcasting that will main frame passes the down USB device to all functions port, the data that the USB device is uploaded are repeated on upstream port and deliver to main frame then; Another is to connect and the detection that disconnects: hub must be done detection to the hot-swappable of USB device, and reports to main frame to reach the function of the hot plug and play of main frame.
At present, because the peripheral device kind is more and more, application popularization adds low price, color scanner, digital camera, modulator-demodular unit, PC Camera, PC Phone, Speaker etc. slowly become standard device, and the USB interface quantity that main frame provided has been used more and more inadequately, so the extension function of usb hub has just been brought into play, can select the hub of 10,20 or more USB socket according to need, many on the market usb hubs mainly are one to expand two, one and expand four, one and expand specifications such as eight at present.
When in the use of usb hub, generally being inserted with a plurality of USB device (as information safety devices) at present, under open state, if do not pull out information safety devices, information safety devices may be subjected to the hacker or wooden horse is attacked, hacker or wooden horse can be falsely used information safety devices user's identity and use the information in the information safety devices to carry out illegal transaction, can make the user be subjected to certain loss in economy.
The utility model content
In order to solve above-mentioned the deficiencies in the prior art, the utility model proposes a kind of usb hub with time-delay control, the delay switch device promptly is set on hub, need not to pull out when not using USB device the user, only need cut off being connected of USB device and hub by the delay switch device, can't carry out data transmission, thereby guarantee that USB device is not subjected to hacker's attack, makes USB device safer under open state.
The utility model provides, and a kind of usb hub with time-delay control comprises: be used to connect the upstream USB device the upstream USB interface, be used to connect the downstream USB interface of downstream USB device, the hub module that all links to each other with upstream USB interface and downstream USB interface, between described upstream USB interface and hub module series connection or between described downstream USB interface and hub series connection be used to control upstream USB interface and the switch module that the downstream USB interface is connected or disconnects, what link to each other with switch module is used for the time delay module that the gauge tap module is carried out the timing break-make.
Described usb hub can also comprise power module.
Described switch module comprises at least one switch element, is connected in Vbus signal wire, GND signal wire, D+ signal wire and/or the D-signal wire between described upstream usb interface module and the described downstream usb interface module arbitrarily on the signal wire of at least one.
Described time delay module also comprises and is used to recover the recovery unit that described switch module is a connected state.
Described time delay module is the chronotron that vapour-pressure type chronotron, condenser type chronotron, timing or counter chronotron or programmable device are realized.
Described switch module is connected with power module with described time delay module.
Described switch element is control triode, relay or analog switch.
Described relay is electromagnetic relay or solid-state relay.
Described switch module and described hub module can be integrated on the hub chip.
Described time delay module can also link to each other with described hub chip.
The beneficial effects of the utility model are: the utility model is provided with the delay switch device on usb hub, the user need not to pull out when not using USB device, the user can set usb bus or each service time along separate routes, above delay switch device automatic cutout usb bus after service time or each connection along separate routes, the user can also set automatic recovery time, switch closure after time of arrival, rebulid connection, thereby avoided USB device under attack, made USB device safer in the use, reliable and convenient.
Description of drawings
Fig. 1 is a kind of structured flowchart of the usb hub of controlling with delaying time;
Fig. 2 is a kind of circuit theory diagrams of the usb hub of controlling with delaying time;
Fig. 3 is a kind of structured flowchart of the usb hub of controlling with delaying time.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
In order to solve above-mentioned the deficiencies in the prior art, the utility model proposes a kind of usb hub with time-delay control, the delay switch device promptly is set on usb hub, need not to pull out when not using USB device the user, only need by setting usb bus and each switch service time along separate routes, after surpassing service time, the delay switch device can cut off usb bus and each connection along separate routes automatically, can't carry out data transmission, thereby guarantee that USB device is not subjected to hacker's attack, makes USB device safer under open state.The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
A kind of usb hub 100 with time-delay control that the utility model provides comprises: a upstream usb 1 01 that is used to connect the upstream USB device, be used to connect two downstream usb 1s 02 of downstream USB device, the hub module 103 that all links to each other with upstream USB interface and downstream USB interface, between upstream USB interface and hub module series connection or between downstream USB interface and hub series connection be used to control the switch module 106 that the upstream USB interface is connected or disconnects with the downstream USB interface, the gauge tap module is carried out the regularly time delay module 104 of break-make, and time delay module is connected with switch module.
Time delay module comprises recovery unit 105, and it is connected state that recovery unit is used to recover switch module.
Usb hub can also comprise power module 110, is connected with hub module, is used for to hub module and the power supply of downstream USB interface.
Switch module 103 and time delay module 104 provide electric power by the upstream USB interface for it, also can provide electric power by external power supply.
Because the USB interface of upstream USB device 1 is generally the form of female, and upstream USB device 1 is used for communicating with upstream usb 1 01, so upstream usb 1 01 is generally the form of male; In like manner, the downstream usb 1 02 that links to each other with USB device 2 in this hub 100 is generally the form of female, and the USB interface of USB device 2 is generally the form of male.
Switch module 10 comprises four switch elements, switch element 106, switch element 107, switch element 108 and switch element 109, be connected on respectively on Vbus signal wire, GND signal wire, D+ signal wire and/or the D-signal wire between upstream USB interface and the downstream USB interface, be used for controlling respectively the connection or the disconnection of respective signal line.
The user is when using USB device, usb hub downstream USB interface is connected with USB device, the upstream USB interface is with after main frame is connected, when USB regulation and stipulation equipment inserts main frame, must connect power supply (VBUS, GND) earlier, the back connects signal (D-, D+), opposite during disconnection, time delay module will be modeled into the signal of mistiming behind the time point and be transferred to switch module to setting, promptly being modeled to switch contact is connected earlier with the GND signal wire with the Vbus signal wire earlier, disconnect after during disconnection, and be connected behind D-signal wire and the D+ signal wire, disconnect earlier during disconnection.Therefore when needs disconnect fully or connect, by disconnecting the access requirement successively that the sequential control that connects reaches usb bus.
Switch module can minimumly have only a switch element to be connected on the Vbus signal wire; the GND signal wire; on certain single line in D+ signal wire and the D-signal wire; thereby control the break-make control USB device of that root signal wire and being connected of main frame; certain single line of four signal wires if only break; such as only on the Vbus signal wire, adding switch element; switch element disconnects the Vbus signal wire behind the overtime; USB device is disconnected with main frame to be connected; can play the effect of protection USB device; but behind the closed again Vbus signal wire of user; do not find corresponding USB device because do not connect feasible may on main frame, being shown as, so need the user can use according to USB standard plug equipment again by the USB standard.Therefore connect when USB device can't be worked when only needing to destroy, also can only disconnect wherein Vbus signal wire, D+ signal wire, D-signal wire and GND signal wire 1 or many.
Switch element can be control triode, relay and analog switch etc.
Relay can be electromagnetic relay or solid-state relay etc.
Relay is the automatic switch element with isolation features, is widely used in remote control, remote measurement, communication, control automatically, electromechanical integration and the power electronic equipment, and be one of most important control element.Relay essence is a kind of electrical equipment that transmits signal, and it reaches different control purposes according to the signal of input.Relay commonly used mainly contains electromagnetic type relay, dry-reed type relay, magnetic maintenance wet reed relay, stepping relay and solid-state relay etc.
The chronotron that time delay module 104 can be realized for vapour-pressure type chronotron, condenser type chronotron, Timer chronotron or programmable device etc.
The time delay module 104 that utility model embodiment provides has multiple implementation, for example can adopt constant time lag control, promptly the user to set the service time of USB device on switch module be 15 minutes, switch module automatic cutout connection behind the overtime.For example can also adopt manual adjustable delay control, be that the user passes through the manual adjustments time, can be the rotary-type of similar old money radio frequency modulation use, also can be that the various ways such as the type of stirring of regulating button are set in the chute, in use knob is screwed to 10 minutes positions such as the user, thereby has set service time.Can also be computer-controlled adjustable delay control,, by software signal be passed to switch module then such as by the software set on the computing machine adjustable service time, thus the break-make of gauge tap module.
Recovery unit is specially time set, and is closed again after 15 minutes such as setting-up time, also can pass through manual closing, is specially button forms such as button, membrane keyboard such as recovery unit, thereby triggers Closing Switch by the user.
After delay switch disconnected, the user can recover switch closure in many ways, USB device and main frame was rebulid is connected to carry out data communication, can be by trigger pips such as the button on the usb hub, membrane keyboards to switch module such as the user.
Make the delay switch closure, can also the user send closure signal for the switch module of usb hub, make the delay switch closure, recover being connected of USB device and main frame by the software on the computing machine.The user can free configuration switch make-and-break time, setting morning 9 switches from being dynamically connected such as the user, 6 pm switch automatic cutout makes the user convenient when using USB device, and guarantees when not using safer.
USB device comprises information safety devices (USB Key), digital camera, scanner, tape and floppy drive, vision facilities etc.
Information safety devices is a kind of small hardware equipment that has processor and storer, and it is connected with computing machine by the data communication interface of computing machine.It has key generation, safe storage key, presets functions such as cryptographic algorithm.The information safety devices computing relevant with key be fully in the device interior operation, and information safety devices has anti-characteristic of attacking, and security is high.Information safety devices generally links to each other with computing machine by USB interface.
Information safety devices adopts the legitimacy of PIN (person identification) sign indicating number or biological characteristic (as fingerprint or iris etc.) identifying user identity, when carrying out authentication, information safety devices is linked to each other with computing machine, the user imports PIN code or biological characteristic on computers, the correctness of information safety devices meeting this PIN code of automatic verification or biological characteristic, have only when the PIN code of user input or biological characteristic are correct, just allow the user to use information safety devices.Information safety devices has the anti-characteristic of attacking of physics, security is high, if but the user for a long time information safety devices is connected with main frame, may be subjected to hacker and wooden horse ground and attack, thereby utilize user's information to carry out illegal transaction, the user is incurred loss economically.
Therefore the user connects information safety devices and main frame by usb hub; under on line state; the user can be transferred to 5 minutes by the knob on the switchgear; after having served as 5 minutes; the switchgear automatic cutout; making the user disconnect with main frame automatically under the situation of not using information safety devices is connected; thereby the protection information safety devices can not be subjected to the attack of hacker or wooden horse under online state; when the user need use information safety devices; the user presses the recovery button on the usb hub; information safety devices is rebulid with main frame to be connected; and when not using, the user also need not to pull out; both user-friendly, guaranteed the security of information safety devices again.
The hub chip of expansion four.
Present embodiment middle and lower reaches usb 1 02 is two, in actual applications, downstream usb 1 02 can also be three, four, eight, 16 or the like, decide according to the type of selected hub chip, what present embodiment was selected is an expansion two hub chip, be that example describes with the hub of two downstream usb 1s 02 promptly with a upstream usb 1 01, and upstream usb 1 01 is consistent with the interface principle of plural downstream usb 1 02 with present embodiment, can in like manner obtain.
Switch module can be connected on the Vbus between upstream usb 1 01 and the hub module 103, GND, on D+ and/or the D-signal wire, be used to control the break-make on the usb bus, also can be connected in two downstream usb 1s 02 one or all and the Vbus between the hub module 103, GND, on D+ and/or D one signal wire, be used to control the break-make in each USB shunt between downstream usb 1 02 and the hub module 103, usb hub 100 just can be realized usb bus and each break-make control along separate routes, as shown in Figure 1, usb bus and each go up equal tandem tap module along separate routes, can freely select only to be connected on the usb bus in the practical application, or only be connected in a certain the shunt realization and all can.
In order more clearly to describe a kind of usb hub that the utility model embodiment provides with time-delay control, provide the preferred circuit figure of a present embodiment below, USB interface is come transmission signals and power supply by a quadded cable as shown in Figure 2: D+ signal wire 3, D-signal wire 2, GND signal wire 4 and Vbus signal wire 1.Wherein D+ signal wire and D-signal wire are the signal wires of a pair of differential mode, Vbus (high level) signal wire and GND () signal wire then provides power supply, between upstream USB interface and hub module or on four signal line between hub module and the downstream USB interface, be connected delay switch, after the user has been set to service time, four signal wires all disconnect, stop data interaction between USB device and the main frame, after the user sends closure signal, four signals are all closed, connect between USB device and the main frame.
In the prior art, the pin on the chip of some hub can be controlled the switch element of each break-make along separate routes, therefore can directly control pin on the chip of hub by time delay module, thus each break-make along separate routes of control hub.
As shown in Figure 3, the utility model provides, and a kind of usb hub 200 with time-delay control comprises: thus be used to connect the upstream USB device a upstream USB interface 201, be used to connect two downstream USB interface 202 of downstream USB device, the pin of the hub module 203 that all links to each other with upstream USB interface and downstream USB interface, control hub module carries out the time delay module 204 of timing break-make to downstream branch, time delay module is connected with hub module.
Time delay module comprises recovery unit 205, and the downstream branch that recovery unit is used to recover hub module is a connected state.
Usb hub can also comprise extraneous power module 206, is connected with hub module, is used for to hub module and the power supply of downstream USB interface.
Because the USB interface of upstream USB device 1 is generally the form of female, and upstream USB device 1 is used for communicating with upstream USB interface 201, so upstream USB interface 201 is generally the form of male; In like manner, the downstream USB interface 202 that links to each other with USB device 2 in this hub 200 is generally the form of female, and the USB interface of USB device 2 is generally the form of male.
The chronotron that time delay module 204 can be realized for vapour-pressure type chronotron, condenser type chronotron, Timer chronotron or programmable device etc.
The time delay module 204 that utility model embodiment provides has multiple implementation, for example can adopt constant time lag control, promptly the user to set the service time of USB device on hub module be 15 minutes, hub module automatic cutout connection behind the overtime.For example can also adopt manual adjustable delay control, be that the user passes through the manual adjustments time, can be the rotary-type of similar old money radio frequency modulation use, also can be that the various ways such as the type of stirring of regulating button are set in the chute, in use knob is screwed to 10 minutes positions such as the user, thereby has set service time.Can also be computer-controlled adjustable delay control,, by software signal be passed to hub module then such as by the software set on the computing machine adjustable service time, thus the break-make of control hub module downstream branch.
Recovery unit is specially time set, and is closed again after 15 minutes such as setting-up time, also can pass through manual closing, is specially button forms such as button, membrane keyboard such as recovery unit, thereby triggers Closing Switch by the user.
After delay switch disconnected, the user can recover switch closure in many ways, USB device and main frame was rebulid is connected to carry out data communication, can be by trigger pips such as the button on the usb hub, membrane keyboards to switch module such as the user.
Make the delay switch closure, can also the user send closure signal for the hub module of usb hub, make the delay switch closure, recover being connected of USB device and main frame by the software on the computing machine.The user can free configuration switch make-and-break time, setting morning 9 switches from being dynamically connected such as the user, 6 pm switch automatic cutout makes the user convenient when using USB device, and guarantees when not using safer.
Use time delay module control to have downstream USB passage to have function pins such as the gating of the USB HUB chip (as SMSCUSB2514) of gating function/enable, reach the purpose of timing controlled downstream port break-make.
Claims (10)
1, a kind of usb hub with time-delay control, it is characterized in that comprising the upstream USB interface that is connected with the upstream USB device, the downstream USB interface that is connected with the downstream USB device, the hub module that all links to each other with upstream USB interface and downstream USB interface, between described upstream USB interface and hub module series connection or between described downstream USB interface and hub series connection be used to control upstream USB interface and the switch module that the downstream USB interface is connected or disconnects, what link to each other with switch module is used for the time delay module that the gauge tap module is carried out the timing break-make.
2, the usb hub of band time-delay control according to claim 1 is characterized in that described usb hub also comprises power module.
3, the usb hub of band time-delay control according to claim 1, it is characterized in that described switch module comprises at least one switch element, be connected in Vbus signal wire, GND signal wire, D+ signal wire and/or the D-signal wire between described upstream usb interface module and the described downstream usb interface module arbitrarily at least one signal wire.
4, the usb hub of band according to claim 1 time-delay control is characterized in that described time delay module also comprises and is used to recover the recovery unit that described switch module is a connected state.
5,, it is characterized in that described time delay module is the chronotron that vapour-pressure type chronotron, condenser type chronotron, timing or counter chronotron or programmable device are realized according to the usb hub of claim 1 or 4 described band time-delay controls.
6, according to the usb hub of claim 1 or 3 or 4 described band time-delay controls, it is characterized in that described switch module is connected with power module with described time delay module.
7, the usb hub of band time-delay control according to claim 3 is characterized in that described switch element is control triode, relay or analog switch.
8, the usb hub of band time-delay control according to claim 7 is characterized in that described relay is electromagnetic relay or solid-state relay.
9, the usb hub of band time-delay control according to claim 1 is characterized in that described switch module and described hub module can be integrated on the hub chip.
10, the usb hub of band time-delay control according to claim 9 is characterized in that described time delay module can also link to each other with described hub chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820078791XU CN201149696Y (en) | 2008-01-29 | 2008-01-29 | USB concentrator with delay control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820078791XU CN201149696Y (en) | 2008-01-29 | 2008-01-29 | USB concentrator with delay control |
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| CN201149696Y true CN201149696Y (en) | 2008-11-12 |
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| CNU200820078791XU Expired - Lifetime CN201149696Y (en) | 2008-01-29 | 2008-01-29 | USB concentrator with delay control |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681640A (en) * | 2011-03-16 | 2012-09-19 | 国基电子（上海）有限公司 | Self-powering universal serial bus (USB) equipment |
| CN105955142A (en) * | 2014-07-25 | 2016-09-21 | 山东中鸿云计算技术有限公司 | High-speed USB hub module for cloud terminal |
| WO2017181634A1 (en) * | 2016-04-20 | 2017-10-26 | 京东方科技集团股份有限公司 | Delay control device, delay control method and electronic apparatus |
| CN108140001A (en) * | 2015-10-14 | 2018-06-08 | 高通股份有限公司 | Universal serial bus (USB) breakout cable |
-
2008
- 2008-01-29 CN CNU200820078791XU patent/CN201149696Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102681640A (en) * | 2011-03-16 | 2012-09-19 | 国基电子（上海）有限公司 | Self-powering universal serial bus (USB) equipment |
| CN105955142A (en) * | 2014-07-25 | 2016-09-21 | 山东中鸿云计算技术有限公司 | High-speed USB hub module for cloud terminal |
| CN105955142B (en) * | 2014-07-25 | 2018-05-29 | 山东中鸿云计算技术有限公司 | A kind of fast cloud terminal USB set wire module |
| CN108140001A (en) * | 2015-10-14 | 2018-06-08 | 高通股份有限公司 | Universal serial bus (USB) breakout cable |
| WO2017181634A1 (en) * | 2016-04-20 | 2017-10-26 | 京东方科技集团股份有限公司 | Delay control device, delay control method and electronic apparatus |
| US10621126B2 (en) | 2016-04-20 | 2020-04-14 | Boe Technology Group Co., Ltd. | Delay control device, delay control method and electronic apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FEITIAN TECHNOLOGIES CO., LTD. Free format text: FORMER NAME: BEIJING FEITIAN CHENGXIN TECHNOLOGIES CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 100085 Beijing city Haidian District Xueqing Road No. 9 Ebizal building B block 17 layer Patentee after: Feitian Technologies Co., Ltd. Address before: 100083, Haidian District, Xueyuan Road, No. 40 research, 7 floor, 5 floor, Beijing Patentee before: Beijing Feitian Chengxin Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081112 |