CN205091732U - Automatic switching device for USB interface - Google Patents
Automatic switching device for USB interface Download PDFInfo
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- CN205091732U CN205091732U CN201520895199.9U CN201520895199U CN205091732U CN 205091732 U CN205091732 U CN 205091732U CN 201520895199 U CN201520895199 U CN 201520895199U CN 205091732 U CN205091732 U CN 205091732U
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- over switch
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- interface
- usb interface
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Abstract
The utility model discloses an automatic switching device for USB interface, the device have outside USB interface, and the device includes: USB concentrator, combination change over switch, first equipment and a plurality of second equipment that goes upward interface and a plurality of down interfaces has, combination change over switch's the control end and the general I/O interface connection of first equipment, a plurality of second equipment respectively with a plurality of down interface connection of USB concentrator, the combination change over switch be used for: as combination change over switch's control end input the first signal, carry out the switching and make the USB interface of first equipment and a down interface intercommunication of USB concentrator to make the outside USB interface intercommunication that goes upward interface and device of USB concentrator, when the second signal was inputed to combination change over switch's control end, the USB interface of the first equipment of execution switching messenger communicate with the interface that goes upward of USB concentrator. This scheme has conveniently realized the automatic switch -over of USB interface.
Description
Technical field
The utility model relates to the device with USB interface, is specifically related to a kind of USB interface automatic switching control equipment.
Background technology
In order to the device such as multiple wireless modulator-demodular unit allowing to multichannel process realizes the function of multichannel process data simultaneously, usually be provided with a CPU, a usb hub and multiple treatment facility therein, make the control of CPU realization to multiple treatment facility by usb hub.Such as, multiple wireless modulator-demodular unit can realize the conversion of multiple signals simultaneously, its inside comprises multiple modulator-demodular unit, in the prior art, make each modulator-demodular unit be connected to CPU by usb hub mostly simultaneously, make CPU as main equipment, each modulator-demodular unit carries out work as from equipment.
But in some cases, such as, when device indoor design and volume restriction, above-mentioned the device of multichannel process can only have unique external USB interface, and when this external USB interface is occupied, user carries out program updates and program debug by external USB interface to the CPU of its inside and each treatment facility by being difficult to.How easily program updates and program debug to be carried out to the said apparatus only with an external USB interface, become the problem that a technician needs to solve.
Utility model content
In view of the above problems, the utility model is proposed to provide a kind of USB interface automatic switching control equipment overcoming the problems referred to above or solve the problem at least in part.
The utility model provides a kind of USB interface automatic switching control equipment, and this device has external USB interface, and this device comprises: have the usb hub of a upstream Interface and multiple downstream interface, combination change-over switch, the first equipment and multiple second equipment;
The combination control end of change-over switch is connected with the universal input/output interface of the first equipment; Multiple second equipment is connected with multiple downstream interfaces of usb hub respectively;
Combination change-over switch is used for: when the control end combining change-over switch inputs the first signal, performing to switch makes the USB interface of the first equipment be communicated with a downstream interface of usb hub, and the upstream Interface of usb hub is communicated with the external USB interface of device; When combining the control end input secondary signal of change-over switch, performing switching and the USB interface of the first equipment is communicated with the upstream Interface of usb hub.
Further, combine change-over switch and comprise the first change-over switch and the second change-over switch;
First link of the first change-over switch connects the USB interface of the first equipment, and the 3rd link of the first change-over switch connects a downstream interface of usb hub, and the second link of the first change-over switch is unsettled;
First link of the second change-over switch connects the upstream Interface of usb hub, and the second link of the second change-over switch connects the USB interface of the first equipment, the external USB interface of the 3rd link coupling arrangement of the second change-over switch;
First change-over switch is used for: when the control end combining change-over switch inputs the first signal, performs the first link and the 3rd link that switch connection first change-over switch; When combining the control end input secondary signal of change-over switch, perform the first link and the second link that switch connection first change-over switch;
Second change-over switch is used for: when the control end combining change-over switch inputs the first signal, performs the first link and the 3rd link that switch connection second change-over switch; When combining the control end input secondary signal of change-over switch, perform the first link and the second link that switch connection second change-over switch.
Further, this device comprises: USB interface testing circuit; First link of USB interface testing circuit is communicated with the external USB interface of this device, and the second link of USB interface testing circuit is communicated with the integrate circuit bus interface of the first equipment.
Further, when USB interface testing circuit detects the 3rd signal, USB interface testing circuit reports signal by integrate circuit bus interface to the first equipment transmission.
Further, according to reporting signal, the first equipment exports the first signal by universal input/output interface to the control end combining change-over switch.
Further, when USB interface testing circuit does not detect the 3rd signal, the first equipment is by the control end output secondary signal of universal input/output interface to combination change-over switch.
Further, the universal input/output interface of the first equipment connects a resistance, and passes through resistance eutral grounding.
According to the USB interface automatic switching control equipment that the utility model provides, the combination control end of change-over switch is connected with the universal input/output interface of the first equipment, multiple second equipment is connected with multiple downstream interfaces of usb hub respectively, the concrete signal inputted by the control end combining change-over switch is controlled combination change-over switch, achieves the automatic switchover of USB interface.The technical program achieves the automatic switchover of USB interface, when external USB interface is occupied, device still can be made to be automatically switched by USB interface and to carry out program updates and program debug easily, thus solve the problem cannot carrying out program updates and program debug when the external USB interface of device is occupied.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to technological means of the present utility model can be better understood, and can be implemented according to the content of instructions, and can become apparent, below especially exemplified by embodiment of the present utility model to allow above-mentioned and other objects, features and advantages of the present utility model.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and is not thought restriction of the present utility model.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:
Fig. 1 shows the connection diagram of USB interface automatic switching control equipment when the control end combining change-over switch inputs the first signal according to the utility model embodiment;
Fig. 2 shows the connection diagram of USB interface automatic switching control equipment when combining the control end input secondary signal of change-over switch according to the utility model embodiment.
Embodiment
Below with reference to accompanying drawings exemplary embodiment of the present disclosure is described in more detail.Although show exemplary embodiment of the present disclosure in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the embodiment set forth here.On the contrary, provide these embodiments to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
Fig. 1 shows the connection diagram of USB interface automatic switching control equipment when the control end combining change-over switch inputs the first signal according to the utility model embodiment, Fig. 2 shows the connection diagram of USB interface automatic switching control equipment when combining the control end input secondary signal of change-over switch according to the utility model embodiment, as depicted in figs. 1 and 2, this device has external USB interface 100, this device comprises: the usb hub 200 with a upstream Interface 201 and multiple downstream interface 202-204, combination change-over switch 300, first equipment 400 and multiple second equipment.Illustrate only two the second equipment in figure as schematic example, these two second equipment are respectively the second equipment 510 and the second equipment 520, but are appreciated that, the utility model is not limited to two the second equipment, and can be the second equipment more than two.Wherein, the control end 301 combining change-over switch 300 is connected with the universal input/output interface 401 of the first equipment 400; Second equipment 510 and the second equipment 520 are connected with the downstream interface 203 of usb hub 200 and downstream interface 204 respectively.Those skilled in the art can arrange the quantity of the second equipment according to real needs, do not limit herein.
Combination change-over switch 300 for: when combining the control end 301 of change-over switch 300 and inputting the first signal, performing to switch makes the USB interface 402 of the first equipment 400 be communicated with the downstream interface 202 of usb hub 200, and the upstream Interface 201 of usb hub 200 is communicated with the external USB interface 100 of device; When the control end 301 combining change-over switch 300 inputs secondary signal, perform switching and the USB interface 402 of the first equipment 400 is communicated with the upstream Interface 201 of usb hub 200.
In order to realize above-mentioned connected relation, particularly, combine change-over switch 300 and can comprise the first change-over switch and the second change-over switch.First change-over switch and the second change-over switch are interlocks.Wherein, the second link 312 that the 3rd link 313 that the first link 311 of the first change-over switch connects USB interface 402, first change-over switch of the first equipment 400 connects downstream interface 202, first change-over switch of usb hub 200 is unsettled; First link 321 of the second change-over switch connects the upstream Interface 201 of usb hub 200, the 3rd link 323 that second link 322 of the second change-over switch connects USB interface 402, second change-over switch of the first equipment 400 connects the external USB interface 100 of this device.
When the control end 301 combining change-over switch 300 inputs the first signal, as shown in Figure 1, first change-over switch performs the first link 311 and the 3rd link 313 that switch connection first change-over switch, second change-over switch performs the first link 321 and the 3rd link 323 that switch connection second change-over switch, the USB interface 402 of the first equipment 400 is communicated with the downstream interface 202 of usb hub 200, and the upstream Interface 201 of usb hub 200 is communicated with the external USB interface 100 of this device.In this case, the first equipment 400, second equipment 510 and the second equipment 520 be usb hub 200 from equipment.
When the control end 301 combining change-over switch 300 inputs secondary signal, as shown in Figure 2, first change-over switch performs the first link 311 and the second link 312 switching connection first change-over switch, second change-over switch performs the first link 321 and the second link 322 switching connection second change-over switch, thus the USB interface 402 of the first equipment 400 is communicated with the upstream Interface 201 of usb hub 200.In this case, first equipment 400 is the main equipment of usb hub 200, second equipment 510 and the second equipment 520 be usb hub 200 from equipment, the first equipment 400 carries out data communication by the USB interface 402 of the first equipment 400 and the second equipment 510 and the second equipment 520.
This device also comprises: USB interface testing circuit 700.First link 701 of USB interface testing circuit 700 is communicated with the external USB interface 100 of this device, and the second link 702 of USB interface testing circuit 700 is communicated with the integrate circuit bus interface 403 of the first equipment 400.The signal of USB interface testing circuit 700 moment to the external USB interface 100 of this device detects.When USB interface testing circuit 700 detects the 3rd signal, USB interface testing circuit 700 reports signal by integrate circuit bus interface 403 to the first equipment 400 transmission.According to reporting signal, the first equipment 400 exports the first signal by universal input/output interface 401 to the control end 301 combining change-over switch 300.When USB interface testing circuit 700 does not detect the 3rd signal, the first equipment 400 exports secondary signal by universal input/output interface 401 to the control end 301 combining change-over switch 300.
Because chip is when dispatching from the factory, generally there is no program, needing the later stage to carry out programming program to it.Therefore when the USB interface automatic switching control equipment that the utility model provides does not have program, first equipment 400 cannot be outputed signal by the control end 301 of universal input/output interface 401 to combination change-over switch 300, thus cannot realize the control to combination change-over switch 300.In this case, can be low level signal by the first signal setting.Particularly, the universal input/output interface 401 of the first equipment 400 connects a resistance 600, and by resistance 600 ground connection.Because the universal input/output interface 401 of the first equipment 400 is by resistance 600 ground connection, thus have input low level signal at the control end 301 of combination change-over switch 300, namely the control end 301 combining change-over switch 300 inputs the first signal, the first change-over switch in combination change-over switch 300 performs the first link 311 and the 3rd link 313 that switch connection first change-over switch, second change-over switch performs the first link 321 and the 3rd link 323 that switch connection second change-over switch, the USB interface 402 of the first equipment 400 is communicated with the downstream interface 202 of usb hub 200, and the upstream Interface 201 of usb hub 200 is communicated with the external USB interface 100 of this device.Now, the first equipment 400, second equipment 510 and the second equipment 520 be usb hub 200 from equipment.User can use apparatus such as computer to pass through the external USB interface 100 of this device to the first equipment 400, second equipment 510 and the second equipment 520 programming program.But be appreciated that, universal input/output interface 401 that the utility model is not limited by the first equipment 400 connects the mode of non-essential resistance 600 and makes the control end 301 input low level signal of combination change-over switch 300, and those skilled in the art can specifically be arranged according to actual needs.
After completing the programming program to the first equipment 400, second equipment 510 and the second equipment 520, user just can disconnect the connection of the external USB interface 100 of apparatus such as computer and this device, and now this device has program.The signal of USB interface testing circuit 700 moment to the external USB interface 100 of this device detects, and such as, the 3rd signal can be the signal exported after apparatus such as computer is connected with the external USB interface 100 of this device.When USB interface testing circuit 700 does not detect that apparatus such as computer is connected with the external USB interface 100 of this device, namely, when USB interface testing circuit 700 does not detect the 3rd signal, the first equipment 400 exports secondary signal by universal input/output interface 401 to the control end 301 combining change-over switch 300.When the control end 301 combining change-over switch 300 inputs secondary signal, first change-over switch performs the first link 311 and the second link 312 switching connection first change-over switch, second change-over switch performs the first link 321 and the second link 322 switching connection second change-over switch, and the USB interface 402 of the first equipment 400 is communicated with the upstream Interface 201 of usb hub 200.Now, the first equipment 400 is the main equipment of usb hub, the second equipment 510 and the second equipment 520 be usb hub 200 from equipment.First equipment 400, second equipment 510 and the second equipment 520 are in normal mode of operation, and the first equipment 400 carries out data communication by the USB interface 402 of the first equipment 400 and the second equipment 510 and the second equipment 520.
When USB interface testing circuit 700 detects that apparatus such as computer is connected with the external USB interface 100 of this device, namely, when USB interface testing circuit 700 detects the 3rd signal, USB interface testing circuit 700 reports signal by integrate circuit bus interface 403 to the first equipment 400 transmission.According to reporting signal, first equipment 400 exports the first signal by universal input/output interface 401 to the control end 301 combining change-over switch 300, as shown in Figure 1, the first change-over switch in combination change-over switch 300 is made to perform the first link 311 and the 3rd link 313 switching connection first change-over switch, second change-over switch performs the first link 321 and the 3rd link 323 that switch connection second change-over switch, thus the USB interface 402 of the first equipment 400 is communicated with the downstream interface 202 of usb hub 200, and the upstream Interface 201 of usb hub 200 is communicated with the external USB interface 100 of this device.Now, the second equipment 510 and the second equipment 520 be usb hub 200 from equipment, and the first equipment 400 from the main equipment of usb hub 200 be changed to usb hub 200 from equipment.Now, first equipment 400, second equipment 510 and the second equipment 520 are equivalent to be in debugging mode, user can use apparatus such as computer to carry out program updates and program debug by the external USB interface 100 of this device to the first equipment 400, second equipment 510 and the second equipment 520, can also collect daily record of work and other information of the first equipment 400, second equipment 510 and the second equipment 520.
Particularly, the USB interface automatic switching control equipment that the utility model can be provided is applied in multiple wireless modulator-demodular unit, and when being applied in multiple wireless modulator-demodular unit, the first equipment can be made to be CPU, and multiple second equipment is multiple modulator-demodular unit.Even if multiple wireless modulator-demodular unit only has an external USB interface, the technical scheme provided by the utility model also can make multiple wireless modulator-demodular unit be automatically switched by USB interface to carry out program updates and program debug easily, thus solves the problem cannot carrying out program updates and program debug when unique external USB interface is occupied.
According to the USB interface automatic switching control equipment that the utility model provides, the combination control end of change-over switch is connected with the universal input/output interface of the first equipment, multiple second equipment is connected with multiple downstream interfaces of usb hub respectively, the concrete signal inputted by the control end combining change-over switch is controlled combination change-over switch, achieve the automatic switchover of USB interface easily, when external USB interface is occupied, device still can be made to be automatically switched by USB interface and to carry out program updates and program debug easily, thus solve the problem cannot carrying out program updates and program debug when the external USB interface of device is occupied.
Intrinsic not relevant to any certain computer, virtual system or miscellaneous equipment with display at this algorithm provided.Various general-purpose system also can with use based on together with this teaching.According to description above, the structure constructed required by this type systematic is apparent.In addition, the utility model is not also for any certain programmed language.It should be understood that and various programming language can be utilized to realize content of the present utility model described here, and the description done language-specific is above to disclose preferred forms of the present utility model.
In instructions provided herein, describe a large amount of detail.But can understand, embodiment of the present utility model can be put into practice when not having these details.In some instances, be not shown specifically known method, structure and technology, so that not fuzzy understanding of this description.
Similarly, be to be understood that, in order to simplify the disclosure and to help to understand in each utility model aspect one or more, in the description above to exemplary embodiment of the present utility model, each feature of the present utility model is grouped together in single embodiment, figure or the description to it sometimes.But, the method for the disclosure should be construed to the following intention of reflection: namely the utility model required for protection requires feature more more than the feature clearly recorded in each claim.Or rather, as claims below reflect, all features of disclosed single embodiment before utility model aspect is to be less than.Therefore, the claims following embodiment are incorporated to this embodiment thus clearly, and wherein each claim itself is as independent embodiment of the present utility model.
Those skilled in the art are appreciated that and adaptively can change the module in the equipment in embodiment and they are arranged in one or more equipment different from this embodiment.Module in embodiment or unit or assembly can be combined into a module or unit or assembly, and multiple submodule or subelement or sub-component can be put them in addition.Except at least some in such feature and/or process or unit be mutually repel except, any combination can be adopted to combine all processes of all features disclosed in this instructions (comprising adjoint claim, summary and accompanying drawing) and so disclosed any method or equipment or unit.Unless expressly stated otherwise, each feature disclosed in this instructions (comprising adjoint claim, summary and accompanying drawing) can by providing identical, alternative features that is equivalent or similar object replaces.
In addition, those skilled in the art can understand, although embodiments more described herein to comprise in other embodiment some included feature instead of further feature, the combination of the feature of different embodiment means and to be within scope of the present utility model and to form different embodiments.Such as, in the following claims, the one of any of embodiment required for protection can use with arbitrary array mode.
It should be noted that above-described embodiment is described the utility model instead of limits the utility model, and those skilled in the art can design alternative embodiment when not departing from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and does not arrange element in the claims or step.Word "a" or "an" before being positioned at element is not got rid of and be there is multiple such element.The utility model can by means of including the hardware of some different elements and realizing by means of the computing machine of suitably programming.In the unit claim listing some devices, several in these devices can be carry out imbody by same hardware branch.Word first, second and third-class use do not represent any order.Can be title by these word explanations.
Claims (7)
1. a USB interface automatic switching control equipment, is characterized in that, described device has external USB interface, and described device comprises: have the usb hub of a upstream Interface and multiple downstream interface, combination change-over switch, the first equipment and multiple second equipment;
The control end of described combination change-over switch is connected with the universal input/output interface of described first equipment; Described multiple second equipment is connected with multiple downstream interfaces of described usb hub respectively;
Described combination change-over switch is used for: when the control end of described combination change-over switch inputs the first signal, performing to switch makes the USB interface of described first equipment be communicated with a downstream interface of described usb hub, and the upstream Interface of described usb hub is communicated with the external USB interface of described device; When the control end input secondary signal of described combination change-over switch, perform switching and the USB interface of described first equipment is communicated with the upstream Interface of described usb hub.
2. USB interface automatic switching control equipment according to claim 1, is characterized in that, described combination change-over switch comprises the first change-over switch and the second change-over switch;
First link of described first change-over switch connects the USB interface of described first equipment, and the 3rd link of described first change-over switch connects a downstream interface of described usb hub, and the second link of described first change-over switch is unsettled;
First link of described second change-over switch connects the upstream Interface of described usb hub, second link of described second change-over switch connects the USB interface of described first equipment, and the 3rd link of described second change-over switch connects the external USB interface of described device;
Described first change-over switch is used for: when the control end of described combination change-over switch inputs the first signal, performs the first link and the 3rd link that switch and be communicated with described first change-over switch; When the control end input secondary signal of described combination change-over switch, perform the first link and the second link that switch and be communicated with described first change-over switch;
Described second change-over switch is used for: when the control end of described combination change-over switch inputs the first signal, performs the first link and the 3rd link that switch and be communicated with described second change-over switch; When the control end input secondary signal of described combination change-over switch, perform the first link and the second link that switch and be communicated with described second change-over switch.
3. device according to claim 1 and 2, is characterized in that, described device comprises: USB interface testing circuit; First link of described USB interface testing circuit is communicated with the external USB interface of described device, and the second link of described USB interface testing circuit is communicated with the integrate circuit bus interface of described first equipment.
4. device according to claim 3, is characterized in that, when described USB interface testing circuit detects the 3rd signal, described USB interface testing circuit reports signal by described integrate circuit bus interface to described first equipment transmission.
5. device according to claim 4, is characterized in that, reports signal according to described, and described first equipment is by control end output described first signal of described universal input/output interface to described combination change-over switch.
6. device according to claim 3, it is characterized in that, when described USB interface testing circuit does not detect the 3rd signal, described first equipment exports described secondary signal by described universal input/output interface to the control end of described combination change-over switch.
7. device according to claim 1, is characterized in that, the universal input/output interface of described first equipment connects a resistance, and by described resistance eutral grounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520895199.9U CN205091732U (en) | 2015-11-11 | 2015-11-11 | Automatic switching device for USB interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520895199.9U CN205091732U (en) | 2015-11-11 | 2015-11-11 | Automatic switching device for USB interface |
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| Publication Number | Publication Date |
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| CN205091732U true CN205091732U (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520895199.9U Expired - Fee Related CN205091732U (en) | 2015-11-11 | 2015-11-11 | Automatic switching device for USB interface |
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| CN (1) | CN205091732U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105868138A (en) * | 2015-11-11 | 2016-08-17 | 乐卡汽车智能科技（北京）有限公司 | Automatic switching device of USB (Universal Serial Bus) interface |
| CN106776440A (en) * | 2016-11-21 | 2017-05-31 | 北京润科通用技术有限公司 | A kind of changing method of multiple signals interface, system and Inverse problem backboard |
| CN108959141A (en) * | 2018-06-11 | 2018-12-07 | 广州视源电子科技股份有限公司 | Usb interface system, method, apparatus, equipment and the storage medium for distributing USB bandwidth |
-
2015
- 2015-11-11 CN CN201520895199.9U patent/CN205091732U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105868138A (en) * | 2015-11-11 | 2016-08-17 | 乐卡汽车智能科技（北京）有限公司 | Automatic switching device of USB (Universal Serial Bus) interface |
| CN105868138B (en) * | 2015-11-11 | 2018-12-21 | 恒大法拉第未来智能汽车（广东）有限公司 | USB interface automatic switching control equipment |
| CN106776440A (en) * | 2016-11-21 | 2017-05-31 | 北京润科通用技术有限公司 | A kind of changing method of multiple signals interface, system and Inverse problem backboard |
| CN106776440B (en) * | 2016-11-21 | 2019-12-10 | 北京润科通用技术有限公司 | Switching method and system of multi-channel signal interface and matrix switching backboard |
| CN108959141A (en) * | 2018-06-11 | 2018-12-07 | 广州视源电子科技股份有限公司 | Usb interface system, method, apparatus, equipment and the storage medium for distributing USB bandwidth |
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Granted publication date: 20160316 Termination date: 20161111 |