CN201639115U

CN201639115U - USB concentrator

Info

Publication number: CN201639115U
Application number: CN2009202600283U
Authority: CN
Inventors: 郭中鼎
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-02
Filing date: 2009-11-02
Publication date: 2010-11-17
Anticipated expiration: 2019-11-02

Abstract

The utility model provides a USB concentrator which comprises a USB input port, a microcontroller and a plurality of downstream interface ports, wherein the microcontroller is electrically connected with the USB input port and the downstream interface ports respectively. Each downstream interface port comprises a switch unit, a USB output port and a light-emitting diode, wherein the switch unit is electrically connected with the microcontroller, the light-emitting diode is electrically connected with the switch unit, and the USB output port is electrically connected with the switch unit and the light-emitting diode respectively. By means of unique structure design, a data transmission path between USB equipment and a computer can be directly created or removed through the opening and the closing of the switch units, the opening and the closing of the switch units prevent the switch units from switching off the power of a USB output port, and thus, the power is optimally and evenly distributed to the USB equipment connected with the USB output port opened by each switch unit.

Description

A kind of usb hub

Technical field

The utility model relates to usb hub, more specifically is meant the keying that can see through a plurality of switch elements, directly sets up or remove a kind of usb hub of the data transfer path between USB device and the computer.

Background technology

Since the computer universalness, in order to satisfy user's demand miscellaneous, the research and development step of computer peripheral equipment never rested, and for those ancillary equipment can be widely used more popularly, need select for use which kind of connecting interface to be connected, promptly become research staff's the most nerve-racking one big problem with computer.

(Universal Serial Bus, USB) afterwards, so far, USB has just like become the main flow of computer peripheral equipment connecting interface since Intel company (Intel) and Microsoft (Microsoft) are devoted to promote the use of universal serial bus.

The benefit of USB maximum is can plug and play (Plug-and-Play), in other words, it supports hot-swappable function, therefore, compared with traditional personal computer interface (Personal Computer Interface, PCI) and the Industry Standard Architecture system (Industry Standard Architecture ISA) waits connecting interface, the easier love and esteem that is subjected to the user of USB interface.

Yet in case most computer peripheral equipment all uses USB interface, how many USB slots computer itself need provide, and promptly becomes suitable puzzlement hardware designs's teacher problem.Especially be the mobile computer of main demand with compact, simplifying for cube only provides two, three USB slots, is enough to deal with user's demand anything but.

As mentioned above, the computer user can use and be present common usb hub 1 (Hub) as shown in fig. 1, the single USB slot 21 that sees through on the computer 2 is tapped into a plurality of USB device, the equipment of for example a plurality of carry-on dish 30, network camera 32 and other use USB etc.Thus, can solve above-mentioned USB slot 21 and not apply the shortcoming of using.But, though these USB device can plug and play, many USB device, for example these carry-on dish 30 design very frivolously usually, are beneficial to the user and portably use.Therefore, in case after those carry-on dish 30 were pulled out, the user often do not know how this takes in and just is unlikely to lose, to the part user and the Yan Shiwei puzzlement.Moreover, except the above-mentioned method of directly pulling out those carry-on dish 30, also can see through operation system of computer, carry out safe removal action, interrupt being connected of those carry-on dish 30 and computer.Thus, promptly will these carry-on dish 30 do not pull out from usb hub, certainly, also just needn't worry this how to take in these carry-on dish 30.But, when next desire is used these carry-on dish 30, after still needing pull out from hub 1 earlier, be plugged to again again on this hub 1, can reconnect with this computer 2, for the user, this is very unnecessary and meaningless action.

In addition, common on the market usb hub mostly is that the power supply input mean allocation that usb hub is received is given each slot at present, that is, and and output port (Port).For example, if the power supply that usb hub received is 500 milliamperes (mA), and this usb hub has four Port altogether, and the electric current that a then average Port can get is 125mA.Yet this kind distribution is because of having or not connection device to change to some extent on this Port, though connection device not on this Port, but still the current source of the 125mA that can account for.Therefore, in case use usb hub to connect the equipment bigger to power supply requirement, when for example connecting the external connected hand disk machine, the not enough and predicament that can't operate of power supply may appear.Thus, need this external connected hand disk machine is plugged to two Port simultaneously, use, make this external connected hand disk machine receive the power supply input of two Port simultaneously (with above-mentioned example, be and receive 125mA*2=250mA), just be enough to make this external connected hand disk machine normal operation.

In sum, a kind of usb hub of novelty should be provided on the market, the user not only can be provided the more occupation mode of diversification, and can be when unnecessary Port does not use, power data is distributed to miscellaneous equipment use, the equipment that reduces connection is because of the not enough problem that can't operate of power supply.

Summary of the invention

Main purpose of the present utility model is to provide a kind of usb hub, and it can see through the keying of a plurality of switch elements, directly sets up or remove the data transfer path between USB device and the computer.

Another purpose of the present utility model, be to provide a kind of usb hub, it sees through the keying of a plurality of switch elements, and the power supply of USB output port is closed in the blocking swtich unit, uses optimization ground power supply mean allocation to each switch element is opened the USB device that the USB output port is connected.

For reaching above-mentioned purpose, the technical solution adopted in the utility model is: a kind of usb hub, comprise USB input port, microcontroller and a plurality of downstream interface port, wherein, this microcontroller is electrically connected with this USB input port and these a plurality of downstream interface ports respectively, each downstream interface port comprises switch element, USB output port and light-emitting diode, wherein, this switch element is electrically connected with this microcontroller, this light-emitting diode is electrically connected with this switch element, and this USB output port is electrically connected with this switch element and this light-emitting diode respectively.

This switch element has first switching point, second switching point and the 3rd switching point, wherein, this first switching point is electrically connected with this microcontroller, this first switching point is changeable to be connected on this second switching point or the 3rd switching point, this second switching point is electrically connected with this USB output port, and the 3rd switching point ground connection.

Further, this usb hub more comprises USB power supply input port, and this USB power supply input port is electrically connected with this microcontroller, and is electrically connected with each switch element by this microcontroller.This switch element is key switch, diverter switch or slide switch.

The beneficial effects of the utility model are: except can be from computer operating system the removal USB device, and outside USB device directly pulled out on usb hub, more the switching that can see through switch element is used, directly set up or remove the data transfer path between USB device and the computer, and, switch element capable of blocking is closed the power supply of USB output port, and, use USB device that reduction connects because of the under-supply possibility that can't operate of power supply with the USB output port that power supply mean allocation to switch element is opened.

Description of drawings

Fig. 1 is the schematic diagram of preceding common usb hub.

Fig. 2 is the block diagram of first kind of preferred embodiment of the utility model.

Fig. 3 A is the key switch unit schematic diagram.

Fig. 3 B is the diverter switch cell schematics.

Fig. 3 C is the slide switch cell schematics.

Fig. 4 is the block diagram of second kind of preferred embodiment of the utility model.

Fig. 5 is the schematic diagram of second kind of preferred embodiment of the utility model.

Embodiment

Be first kind of preferable specific embodiment of the present utility model as shown in Figures 1 to 4, as shown in Figure 2, a kind of usb hub 40, it is used for seeing through interface port connection outer computer 5 and a plurality of USB device 6 of USB.

This usb hub 40 comprises USB input port 41, microcontroller 42 and a plurality of downstream interface port 46, wherein, this microcontroller 42 is electrically connected with this USB input port 41 and these a plurality of downstream interface ports 46 respectively, each downstream interface port 46 comprises switch element 43, USB output port 44 and light-emitting diode 45, wherein, this switch element 43 is electrically connected with this microcontroller 42, this light-emitting diode 45 is electrically connected with this switch element 43, and this USB output port 44 is electrically connected with this switch element 43 and this light-emitting diode 45 respectively.

Further, this switch element 43 has first switching point 431, second switching point 432 and the 3rd switching point 433, wherein, this first switching point 431 is electrically connected with this microcontroller 42, these first switching point, 431 changeable being connected on this second switching point 432 or the 3rd switching point 433, this second switching point 432 is electrically connected with this USB output port 44, and the 3rd switching point 433 ground connection are used the opening or the closed condition that determine this switch element 43.

As shown in Figure 2, with first group of this downstream interface port 46 is example, when these switch element 43 switchings make that this first switching point 431 is connected to the 3rd switching point 433, even these switch element 43 ground connection, and this moment, this first switching point 431 opened circuit with this second switching point 432, was considered as this switch element 43 and closed.

When these switch element 43 switchings make that this first switching point 431 is connected to this second switching point 432, then make these switch element 43 conductings and be connected to this USB output port 44 and this light-emitting diode 45, be considered as this switch element 43 and open.

When this switch element 43 is opened, power supply can be offered this light-emitting diode 45, this light-emitting diode 45 must when opening, this switch element 43 be lighted, and remind the user that these switch element 43 these affiliated downstream interface ports 46 are opening.And this switch element 43 sees through this USB output port 44 when opening, and provides power supply being connected to this USB device 6 on this USB output port 44, and sets up the data transfer path of this USB device 6 and this computer 5.

And when this switch element 43 is closed, be the power supply of blocking-up this USB output port 44 and this light-emitting diode 45, and block the data transfer path of 5 in this USB device and this computer simultaneously.

What deserves to be mentioned is, see through the switching of first switching point 431 between this second switching point 432 and the 3rd switching point 433 of this switch element 43, can control being connected of these a plurality of USB device 6 and this computer 5 more direct and effectively.Therefore, except the mode will these a plurality of USB device 6 on this usb hub 40, pulled out and the mode that sees through these a plurality of USB device 6 of operating system removal on this computer 5, the utility model can utilize switch element 43 for the user brings more diversified and more direct connected mode.

Quantity that it should be noted that this switch element 43, this USB output port 44 and this light-emitting diode 45 is not limited, but the number needs of this three

assembly

43,44 and 45 corresponds to each other.In other words, be with this switch element 43, this USB output port 44 and this light-emitting diode 45 common one group of downstream interface port 46 (Downstream Port) that form.

This USB input port 41 can be considered a Upstream Interface port (Upstream Port), i.e. USB plug (consulting 41 among Fig. 3 A) is in order to be connected to this usb hub 40 on this computer 5.And this computer 5 promptly sees through this USB input port 41, provide the power supply input to give this usb hub 40, and respectively this USB device 6 that is connected with this usb hub 40 is set up data transfer path.

This microcontroller 42 imports port 41 with this USB respectively and each switch element 43 is electrically connected, and sees through this USB input port 41 the power supply input that is provided from this computer 5 is provided, and comply with the keying state mean allocation power supply of these a plurality of switch elements 43.For example, if this usb hub 40 has four groups of these downstream interface port 46 altogether, and this switch element 43 in these four groups of downstream interface ports 46 is all unlatching, that is, these four groups of downstream interface ports 46 all need use power supply.Therefore, if the power supply of this computer 5 inputs is 500 milliamperes (mA), then average each organize this downstream interface port 46 and can get 125mA.And, have this switch element 43 of two groups to be unlatching if in these four groups of downstream interface ports 46, and this switch element 43 of two groups is for closing in addition, then this microprocessor 42 judges to have only two groups of these downstream interface ports 46 to need to use power supply.Therefore, only the power distribution that this computer 5 provided is used for the downstream interface port of opening 46 to these two groups of switch elements 43, and respectively this downstream interface port 46 can be got 250mA.Use, see through the distribution of this microprocessor 42, reach optimized power management, those USB device 6 that reduction is connected are because of the under-supply possibility that can't operate of power supply.

See also Fig. 3 A, Fig. 3 B and Fig. 3 C, this usb hub 40 of the present utility model, principal character is to be to use these a plurality of switch elements 43 directly to switch whether being connected of this computer 5 and these a plurality of USB device 6.And this switch element 43 can have multifarious variation.As shown in the figure, can be the key switch unit among Fig. 3 A, the diverter switch unit among Fig. 3 B, and the slide switch unit etc. among Fig. 3 C, and this USB output port 44 among the figure, be schematic illustration and with four groups be example, but should be as limit.

Among above-mentioned Fig. 3 A, Fig. 3 B and Fig. 3 C, be to be example with four groups of these USB output ports 44, though the utility model can see through the switching of switch, carry out optimized power management, but use if these four groups of USB output ports 44 all are unlocked, or the utility model development is when to have this USB output port 44 of seven groups, 13 groups or other quantity, even see through optimized power management, also possibly can't provide the enough power supplys of USB device 6 of all connections.Therefore, see also Fig. 4 and Fig. 5, be the calcspar and the schematic diagram of second kind of preferred embodiment of the present utility model.

As shown in Figure 4, except this USB input port 41, this usb hub 40 of the present utility model more comprises USB power supply input port 41a, and this USB power supply input port 41a is electrically connected with this microcontroller 42, and is electrically connected with each switch element 43 by this microcontroller 42.

This USB input port 41 and common this upstream input port, i.e. this USB plug of Y type among Fig. 5 formed of this USB power supply input port 41a system.

This usb hub 40 sees through this input port, upstream, can once connect two USB slots on this outer computer 5, receives the power supply of twice.Thus, it is too much to solve the USB output port 44 of opening use on this usb hub 40, causes the under-supply predicament of power supply.And this USB power supply input port 41a only is used for receiving the power supply that this outer computer 5 is provided, and the transfer of data between not responsible these a plurality of USB device 6 and this outer computer 5, therefore, data transfer path between these a plurality of USB device 6 and this outer computer 5 still builds on this USB input port 41.If in data transmission procedure this USB power supply input port 41a is pulled out on this outer computer 5, as long as the power supply that this USB input port 41 is received is enough, then the transmission of data can not be affected, and data transfer path also can thereby not be blocked.

By the foregoing description, the purpose of this utility model is by in full force and effect having reached.The personage who is familiar with this technology should be understood that the utility model includes but not limited to the content of describing in accompanying drawing and the top specific embodiment.Any modification that does not depart from function of the present utility model and structural principle all will be included in the scope of claims (that is comprising 4Port or other quantity interfaces in interior application all should belong to claim scope of the present utility model).

Claims

1. usb hub, it is characterized in that: comprise USB input port, microcontroller and a plurality of downstream interface port, wherein, this microcontroller is electrically connected with this USB input port and these a plurality of downstream interface ports respectively, each downstream interface port comprises switch element, USB output port and light-emitting diode, wherein, this switch element is electrically connected with this microcontroller, this light-emitting diode is electrically connected with this switch element, and this USB output port is electrically connected with this switch element and this light-emitting diode respectively.

2. a kind of usb hub as claimed in claim 1, it is characterized in that, this switch element has first switching point, second switching point and the 3rd switching point, wherein, this first switching point is electrically connected with this microcontroller, this first switching point is changeable to be connected on this second switching point or the 3rd switching point, and this second switching point is electrically connected with this USB output port, and the 3rd switching point ground connection.

3. a kind of usb hub as claimed in claim 1 is characterized in that, this usb hub more comprises USB power supply input port, and this USB power supply input port is electrically connected with this microcontroller, and is electrically connected with each switch element by this microcontroller.

4. as claim 1 or 3 described a kind of usb hubs, it is characterized in that this switch element is key switch, diverter switch or slide switch.