CN103902494B - Interface expansion device - Google Patents
Interface expansion device Download PDFInfo
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- CN103902494B CN103902494B CN201210583604.4A CN201210583604A CN103902494B CN 103902494 B CN103902494 B CN 103902494B CN 201210583604 A CN201210583604 A CN 201210583604A CN 103902494 B CN103902494 B CN 103902494B
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Abstract
The invention discloses an interface expansion device which comprises a USB (universal serial bus) connecting port, a USB hub and a first interface conversion circuit. The USB hub is provided with a first connecting port which is connected to the USB connecting port. The first interface conversion circuit comprises a first USB host and a second USB host. The first USB host is connected to the USB hub and is connected to the USB connecting port by the USB hub. The second USB host is provided with a bus and is directly connected to the USB connecting port without any USB hubs. The interface expansion device in an embodiment of the invention has the advantages that transmission compatible to USB3.0 specifications can be carried out without hubs which conform to the USB3.0 specifications, and accordingly the production cost of the integral interface expansion device can be reduced.
Description
Technical field
The present invention relates to a kind of interface expanding device, particularly to a kind of interface expanding device being compatible to usb3.0.
Background technology
Recently, the design direction of laptop is more frivolous, so that laptop can be more frivolous, in mesh
The input and output that volume excessively huge input and output (i/o) interface can remove in front design and only retain minority connect
Mouthful.For example, network joint (such as rj45 connectivity port) and Video Graphics Array signal port (vga port) are moved
Remove, only retain usb port or miniature video port (the mini displayport) of minority.However, user also sometimes
It is must be using the input/output interface being removed to these.Therefore, traditionally can be by external small hardware device
(dongle) providing the function of the input/output interface required for user.The small hardware of usb3.0 traditionally can be compatible to
Device, need to have the hub (hub) meeting usb3.0 specification, for providing the input/output interface supporting usb3.0.However,
Meet at present the hub of usb3.0 specification cost still high so that the one-tenth of the small hardware device of usb3.0 can be compatible at present
This is too high.
Content of the invention
In order to overcome problems of the prior art, a purpose of the present invention is to provide a kind of need to use usb2.0
Hub, but it is compatible to the interface expanding device of usb2.0 and usb3.0.
The present invention provides a kind of interface expanding device, connects including a usb connectivity port, a usb hub and one first
Mouth change-over circuit.Usb hub has one first connectivity port and connects to usb connectivity port.First interface change-over circuit includes
One the oneth usb main control end and one the 2nd usb main control end.First usb main control end connects to usb hub, and via usb line concentration
Device connects to usb connectivity port.2nd usb main control end has a bus, not via any usb hub, is connected directly to usb
Connectivity port.
The present invention also provides a kind of interface expanding device, including a usb connectivity port, a usb hub, a first interface
Change-over circuit and a second interface change-over circuit.Usb hub has one first connectivity port and connects to usb connectivity port.
First interface change-over circuit includes one the oneth usb main control end, one the 2nd usb main control end and an interface convertor.First usb master
Control end connects to usb hub, and connects to usb connectivity port via usb hub.2nd usb main control end has a bus,
Not via any usb hub, it is connected directly to usb connectivity port.Interface convertor, in order to will be compatible to the letter of lightning interface
Number be converted to a display port signal.Second interface change-over circuit, in order to be converted to a video and graphic battle array by display port signal
Column signal, and by Video Graphics Array signal output to a Video Graphics Array signal port.Wherein, usb hub also includes
One second connectivity port, connects to one the 3rd interface conversion circuit, in order to change the usb signal from a usb main control end
For network package, and network package is converted to usb signal.
The present invention also provides a kind of interface expanding device, including a usb connectivity port, a usb hub, a first interface
Change-over circuit and a second interface change-over circuit.Usb hub has one first connectivity port and connects to usb connectivity port.
First interface change-over circuit includes one the oneth usb main control end, one the 2nd usb main control end and an interface convertor.First usb master
Control end connects to usb hub, and connects to usb connectivity port via usb hub.2nd usb main control end has a bus,
Not via any usb hub, it is connected directly to usb connectivity port.Interface convertor, in order to will be compatible to the letter of lightning interface
Number be converted to a display port signal.Second interface change-over circuit, in order to be converted to a video and graphic battle array by display port signal
Column signal, and by Video Graphics Array signal output to a Video Graphics Array signal port.Wherein, usb connectivity port has
One first group of pins and one second group of pins, are compatible to the joint of usb2.0 and the joint of usb3.0 respectively, and usb hub
For a usb2.0 hub.
The interface expanding device of the embodiment of the present invention does not need using the hub meeting usb3.0 specification, you can to provide
It is compatible to the transmission of usb3.0 specification, therefore can reduce the production cost of whole interface expanding device.
Brief description
Fig. 1 is a schematic diagram of the interface expanding device of the present invention；
Fig. 2 is another schematic diagram of the interface expanding device of the present invention；
Fig. 3 is another schematic diagram of the interface expanding device of the present invention.
[Main Reference Numerals explanation]
10th, 20,30 ~ interface expanding device；
11 ~ usb connectivity port；
12 ~ usb hub；
13rd, 21,32 ~ interface conversion circuit；
14th, 15 ~ pin；
16th, 17 ~ usb main control end；
18 ~ bus；
19th, 22 ~ connectivity port；
31 ~ interface convertor.
Specific embodiment
The device of various embodiments of the invention discussed more fully below and using method.It is important to note, however, that this
The feasible inventive concept of bright provided many may be implemented in various particular ranges.These specific embodiments are only used for illustrating
Bright assembly of the invention and using method, but non-for limiting the scope of the present invention.
Fig. 1 is the schematic diagram of interface expanding device provided by the present invention.As shown in figure 1, interface expanding device 10 includes
One usb connectivity port 11, a usb hub 12 and a first interface change-over circuit 13.For example, interface expanding device 10
Can be pedestal (docking) or small hardware device, but be not limited.First interface change-over circuit 13 is in order to expand interface
Fill and put 10 connections to other devices.For example, other devices that first interface change-over circuit 13 is connected can be notes
This type computer, desktop computer or hub, but be not limited.The input and output that first interface change-over circuit 13 is connected
Interface port can be met the input/output interface port of usb2.0 and/or usb3.0 or meet lightning
The miniature video port (mini displayport) of (lightning bolt) interface, but be not limited.First interface turns
Change circuit 13 and also include one the oneth usb main control end (host) 16 and one the 2nd usb main control end 17.First usb main control end 16 is
The main control end of one usb2.0, and the 2nd usb main control end 17 is the main control end of usb3.0.First usb main control end 16 and the 2nd usb master
The action at control end 17 is identical with the main control end of known usb2.0 and the main control end of usb3.0 respectively, therefore repeats no more in this.
First usb main control end 16 connects to usb hub 12, and connects to usb connectivity port 11 via usb hub 12.2nd usb
Main control end 17 has a bus 18, and the 2nd usb main control end 17 is not via any usb hub, and is connected directly to usb even
Connect port 11.
In one embodiment, when first interface change-over circuit 13 connect to support usb3.0 laptop when, then
Because the specification of usb3.0 has down compatible characteristic, the usb signal therefore from laptop can be simultaneously communicating to
First usb main control end 16 and the 2nd usb main control end 17.In another embodiment, when first interface change-over circuit 13 connect to
Hold usb2.0 laptop when, then be derived from laptop usb signal only can be delivered to a usb main control end
16.In another embodiment, when first interface change-over circuit 13 connects the miniature of the laptop to support lightning interface
During video port, then it is derived from laptop and supports that the signal of usb3.0 delivers to a usb main control end 16 and the 2nd usb respectively
Main control end 17.
Usb hub 12 in order to by the signal transmission from first interface change-over circuit 13 to usb connectivity port 11, or
It is to first interface change-over circuit 13 by the signal transmission from usb connectivity port 11.In the present embodiment, usb hub 12
For being compatible to the hub of usb2.0.Signal transmission from a usb main control end 16 can also be arrived other by usb hub 12
Meet the usb connectivity port of usb2.0 specification.The action of usb hub 12 is identical with the hub of known usb2.0 specification,
Therefore repeat no more in this.Usb connectivity port 11 has one first group of pins 14 and one second group of pins 15, and the first group of pins
14 and second group of pins 15 be compatible to the joint of usb2.0 and usb3.0 respectively.In the present embodiment, the first group of pins 14 is electricity
Property connects to one first connectivity port 19 of usb hub 12, and the second group of pins 15 is then directly electrically connected to the 2nd usb master
The bus 18 at control end 17.In other words, the usb connectivity port 11 in embodiment also has a slot (not shown) and can receive
It is compatible to a plug of usb specification, the compatible plug in usb2.0 and usb3.0 of this plug.For example, connect to usb even
The external device (ED) connecing port 11 can be keyboard, mouse, printer, Portable disk, camera, hub, external hard drive, blue-tooth device
And card reader ... waits the product being compatible to usb input/output interface specification, but it is not limited.
The input/output interface of the external device (ED) that interface expanding device 10 is connected according to it has following several operation.When
When external device (ED) connects to usb connectivity port 11 by the joint being compatible to usb2.0, then a usb main control end 16 is by usb
Hub 12 is communicated with external device (ED).When external device (ED) connects to usb connectivity port by the joint being compatible to usb3.0
When 11, the 2nd usb main control end 17 is then directly communicated with external device (ED) by bus 18.Therefore, interface expanding device 10 is not
Need usb3.0 hub can allow first interface change-over circuit 13 connected to one first external device (ED) be connected with usb
One second external device (ED) that port 11 is connected is communicated by usb3.0 or usb2.0 specification.
Fig. 2 is another schematic diagram of interface expanding device provided by the present invention.As shown in Fig. 2 interface expanding device 20
Similar with the interface expanding device 10 shown in Fig. 1, difference is that interface expanding device 20 also includes a second interface change-over circuit
21, and usb hub 12 also includes one second connectivity port 22.Second interface change-over circuit 21 is in order to will be from a usb
The usb signal of main control end 16 is converted to network package, and network package is converted to usb signal.For example, second interface
Change-over circuit 21 can have a slot, in order to be connected to the rj45 network joint of external device (ED).Furthermore, second interface change-over circuit
21 is by usb hub 12, the usb signal from a usb main control end 16 is converted to network package, and is transferred to second
The external device (ED) that interface conversion circuit 21 is connected is communicated.For example, what second interface change-over circuit 21 was connected is outer
Part device can be other computers, hub, switch hub (switching hub) or ip Wireless Router, but not with this
It is limited.The joint that external device (ED) is connected with second interface change-over circuit 21 can be rj45 specification joint, but not as
Limit.Therefore, interface expanding device 20 do not need the hub of usb3.0 can allow first interface change-over circuit 13 connected to
One second external device (ED) that is connected with usb connectivity port 11 of one first external device (ED) enter by usb3.0 or usb2.0 specification
Row communication, can also allow one the 3rd external device (ED) that the first external device (ED) is connected with first interface change-over circuit 21 carry out network
The transmission of package and reception.
Fig. 3 is another schematic diagram of interface expanding device provided by the present invention.As shown in figure 3, interface expanding device 30
Similar with the interface expanding device 20 shown in Fig. 2, difference is that interface expanding device 30 also includes one the 3rd interface conversion circuit
32, and first interface change-over circuit 13 also includes an interface convertor 31.Interface convertor 31 connects in order to will be compatible to lightning
Mouthful signal be converted to a display port (display port) signal, and the 3rd interface conversion circuit 32 is in order to by display end
Message number is converted to a Video Graphics Array (vga) signal.For example, the outside dress that the 3rd interface conversion circuit 32 is connected
Putting can be computer screen, monitor, scialyscope or TV, but is not limited.External device (ED) and the 3rd interface conversion electricity
The joint that road 32 connects can be compatible to Video Graphics Array signal port (vga port) or digital visual interface (dvi) rule
The joint of lattice, but be not limited.In one embodiment, a scialyscope can be by vga joint and the 3rd interface conversion circuit
32 are connected.In one embodiment, interface expanding device 30 connects to the lightning interface connection port of laptop, and one
The individual Portable disk meeting usb3.0 specification can be communicated with laptop via usb connectivity port 11, and to meet
The transmission speed of usb3.0 is communicated.In addition, laptop can turn via the second interface of interface expanding device 30
Change circuit 21 to be connected with outside network equipment, laptop will can also be schemed by the 3rd interface conversion circuit 32 simultaneously
As exporting to an external scialyscope.
Therefore, interface expanding device 30 does not need the hub of usb3.0 that first interface change-over circuit 13 can be allowed to be connected
One second external device (ED) that one first external device (ED) being connected to is connected with usb connectivity port 11 is advised by usb3.0 or usb2.0
Lattice are communicated.Additionally, interface expanding device 30 can also allow the first external device (ED) be connected with first interface change-over circuit 21
One the 3rd external device (ED) carry out transmission and the reception of network package.In addition, interface expanding device 30 can also allow first
One the 4th external device (ED) that external device (ED) is connected with the 3rd interface conversion circuit 32 carries out the transmission of image.
It follows that the interface expanding device of the present invention does not need using the hub meeting usb3.0 specification, you can with
The transmission being compatible to usb3.0 specification is provided, therefore can reduce the production cost of whole interface expanding device.
Claims (9)
1. a kind of interface expanding device, comprising:
One usb connectivity port；
One usb hub, has one first connectivity port and connects to above-mentioned usb connectivity port；
One first interface change-over circuit, comprising:
One the oneth usb main control end, connects to above-mentioned usb hub, and connects to above-mentioned usb connection via above-mentioned usb hub
Port；
One the 2nd usb main control end, has a bus, and not via any usb hub, is connected directly to above-mentioned usb and connects
Port；
And
One interface convertor, in order to be converted to a display port signal by the signal being compatible to lightning interface；And
One the 3rd interface conversion circuit, in order to above-mentioned display port signal to be converted to a Video Graphics Array signal, and will be upper
State Video Graphics Array signal output to a Video Graphics Array signal port.
2. interface expanding device as claimed in claim 1, wherein above-mentioned usb connectivity port has one first group of pins and one
Two group of pins, are compatible to the joint of usb 2.0 and the joint of usb 3.0 respectively, and above-mentioned usb hub is a usb 2.0
Hub.
3. interface expanding device as claimed in claim 1, wherein when an external device (ED) is by the joint being compatible to usb 2.0
When connecting to above-mentioned usb connectivity port, an above-mentioned usb main control end is carried out by above-mentioned usb hub and said external device
Communication, and when said external device connects to above-mentioned usb connectivity port by the joint being compatible to usb 3.0, above-mentioned
2nd usb main control end is then directly communicated with said external device by above-mentioned bus.
4. interface expanding device as claimed in claim 1, wherein above-mentioned usb hub also includes one second connectivity port, even
It is connected to a second interface change-over circuit, in order to the usb signal from an above-mentioned usb main control end to be converted to network package, with
And network package is converted to usb signal.
5. interface expanding device as claimed in claim 1, wherein above-mentioned interface expanding device is a pedestal or a small hardware
Device.
6. a kind of interface expanding device, comprising:
One usb connectivity port；
One usb hub, has one first connectivity port and connects to above-mentioned usb connectivity port；
One first interface change-over circuit, comprising:
One the oneth usb main control end, connects to above-mentioned usb hub, and connects to above-mentioned usb connection via above-mentioned usb hub
Port；
One the 2nd usb main control end, has a bus, and not via any usb hub, is connected directly to above-mentioned usb and connects
Port；And
One interface convertor, in order to be converted to a display port signal by the signal being compatible to lightning interface；And
One second interface change-over circuit, in order to above-mentioned display port signal to be converted to a Video Graphics Array signal, and will be upper
State Video Graphics Array signal output to a Video Graphics Array signal port；
Wherein above-mentioned usb hub also includes one second connectivity port, connects to one the 3rd interface conversion circuit, in order to being derived from
The usb signal of an above-mentioned usb main control end is converted to network package, and network package is converted to usb signal.
7. interface expanding device as claimed in claim 6, wherein above-mentioned usb connectivity port has one first group of pins and one
Two group of pins, are compatible to the joint of usb 2.0 and the joint of usb 3.0 respectively, and above-mentioned usb hub is a usb 2.0
Hub.
8. interface expanding device as claimed in claim 7, wherein when an external device (ED) is by the joint being compatible to usb 2.0
When connecting to above-mentioned usb connectivity port, an above-mentioned usb main control end is carried out by above-mentioned usb hub and said external device
Communication, and when said external device connects to above-mentioned usb connectivity port by the joint being compatible to usb 3.0, above-mentioned
2nd usb main control end is then directly communicated with said external device by above-mentioned bus.
9. a kind of interface expanding device, comprising:
One usb connectivity port；
One usb hub, has one first connectivity port and connects to above-mentioned usb connectivity port；
One first interface change-over circuit, comprising:
One the oneth usb main control end, connects to above-mentioned usb hub, and connects to above-mentioned usb connection via above-mentioned usb hub
Port；
One the 2nd usb main control end, has a bus, and not via any usb hub, is connected directly to above-mentioned usb and connects
Port；And
One interface convertor, in order to be converted to a display port signal by the signal being compatible to lightning interface；And
One second interface change-over circuit, in order to above-mentioned display port signal to be converted to a Video Graphics Array signal, and will be upper
State Video Graphics Array signal output to a Video Graphics Array signal port；
Wherein above-mentioned usb connectivity port has one first group of pins and one second group of pins, is compatible to the joint of usb 2.0 respectively
With the joint of usb 3.0, and above-mentioned usb hub be a usb 2.0 hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210583604.4A CN103902494B (en) | 2012-12-28 | 2012-12-28 | Interface expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210583604.4A CN103902494B (en) | 2012-12-28 | 2012-12-28 | Interface expansion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103902494A CN103902494A (en) | 2014-07-02 |
| CN103902494B true CN103902494B (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210583604.4A Active CN103902494B (en) | 2012-12-28 | 2012-12-28 | Interface expansion device |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021243488A1 (en) * | 2020-05-30 | 2021-12-09 | 华为技术有限公司 | Transmission interface, transmission cable, electronic device, and signal transmission method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2623278A1 (en) * | 2005-09-29 | 2007-04-05 | Sung Ub Moon | Discrete computer processor system and peripherals system |
| CN2882032Y (en) * | 2006-02-14 | 2007-03-21 | 翼庆企业股份有限公司 | USB concentrator |
| US8510494B2 (en) * | 2009-12-24 | 2013-08-13 | St-Ericsson Sa | USB 3.0 support in mobile platform with USB 2.0 interface |
| US8135883B2 (en) * | 2010-01-19 | 2012-03-13 | Standard Microsystems Corporation | USB hub apparatus supporting multiple high speed devices and a single super speed device |
| TWM431475U (en) * | 2012-02-01 | 2012-06-11 | Aevoe Inc | Connecting wire with metal housing |
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| CN103902494A (en) | 2014-07-02 |
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