CN104461992A - Electronic device - Google Patents
Electronic device Download PDFInfo
- Publication number
- CN104461992A CN104461992A CN201410605116.8A CN201410605116A CN104461992A CN 104461992 A CN104461992 A CN 104461992A CN 201410605116 A CN201410605116 A CN 201410605116A CN 104461992 A CN104461992 A CN 104461992A
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- China
- Prior art keywords
- usb
- multiplexer
- connector
- input port
- power supply
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3253—Power saving in bus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Sources (AREA)
- Information Transfer Systems (AREA)
Abstract
The invention provides an electronic device, and a USB concentrator inside the electronic device can be turned off to reduce power consumption. The electronic device comprises a main function module and can be connected with an external USB device through a connector. When the electronic device detects that the connector is not connected with the USB device, power supplied for the USB concentrator is stopped, and signals of the main function module are transmitted to a host device through a bypass; when it is detected that the connector is connected with the USB device, power is supplied for the USB concentrator, signals of the main function module are switched to a transmission route shared by an extended function, and a main function and the extended function are transmitted to the host device through the USB concentrator. According to the electronic device, the effects of saving energy and lowering hardware cost can be achieved.
Description
Technical field
The present invention about a kind of electronic installation, more specifically, about on a kind of USB of being applied to line concentration circuit and province's electric treatment is provided close built-in usb hub to save the electronic installation of power consumption.
Background technology
Due to universal serial bus (Universal Serial Bus; USB) there is support hot plug (Hotswapping or Hot plugging) and plug and play (Plug and Play; PNP) characteristic, therefore be widely used in a kind of output-input interface on computer system and peripheral device line, is even also applied on Mobile Communications product, and therefore, USB interface seems to become the connector of main flow.
In addition, industrial community is for expanding the original output-input interface of electronic equipment, more release the USB interface extension facility of the USB interface keyboard of usb hub or tool USB line concentration circuit etc., the USB line concentration circuit provided by this USB interface extension facility allows user can more resilient external peripheral device.
But, aforementioned USB interface extension facility is when any peripheral device of the non-grafting of its USB connector, USB controller in its USB line concentration circuit is still expending electric power, while providing USB interface extended function, therefore how also can reach energy-saving effect real in desire most ardently the problem of probing at present.
Summary of the invention
In view of the variety of problems of above-mentioned known techniques, the object of the present invention is to provide and a kind ofly close built-in usb hub to save the electronic installation of power consumption, it has USB interface extended function and electricity-saving function concurrently.
For achieving the above object, the invention provides a kind of electronic installation, USB device can be couple to host apparatus, this USB device exports the first signal, and this electronic installation comprises: function of tonic chord module, exports the second signal; First transmission line, couples with this function of tonic chord module, to transmit this second signal; Connector, selectivity connects this USB device, to receive this first signal; USB line concentration circuit, it has a USB downstream ports, the 2nd USB downstream ports and port, USB upstream, one USB downstream ports couples this function of tonic chord module to receive this second signal by this first transmission line, and the 2nd USB downstream ports couples this connector to receive this first signal; Detecting unit, is arranged near this connector, and when this connector connects this USB device, this detecting unit exports trigger pip; Power supply providing unit, optionally exports electric energy to this USB line concentration circuit; And control switching circuit, it has the host side transmission line be connected with this host apparatus, the by-pass line be connected with this function of tonic chord module, the second transmission line of being connected with the port, USB upstream of this USB line concentration circuit, and this control switching circuit is connected with this detecting unit; Wherein when this detecting unit does not export this trigger pip, this power supply providing unit is not powered to this USB line concentration circuit, and this control switching circuit makes this host side transmission line and this by-pass line be in on-state; Wherein when this detecting unit exports this trigger pip, this power supply providing unit is powered to this USB line concentration circuit, and this control switching circuit makes this host side transmission line switch to the on-state with this second transmission line by the on-state with this by-pass line, sharing this USB line concentration circuit for this function of tonic chord module and this USB device must be connected with this host apparatus.
As further alternative technical scheme, this electronic device applications is in USB interface keyboard, and the keypad function that function of tonic chord module provides for this USB interface keyboard, this connector is arranged on this USB interface keyboard case.
As further alternative technical scheme, this control switching circuit comprises: the first multiplexer, this first multiplexer has the first input port, the second input port and output port, this first input port is coupled by this by-pass line and this function of tonic chord module, and the second input port of this first multiplexer is coupled by this second transmission line and this port, USB upstream; The output port of this first multiplexer is coupled by this host side transmission line and this host apparatus.
As further alternative technical scheme, detecting unit comprises: ground terminal, in order to provide low-potential signal as trigger pip; Control terminal, be connected with this control switching circuit and power supply providing unit, switch, vicinity is located at this connector, with when this USB device is connected with the 2nd USB downstream ports by this connector, touch this switch and connect this ground terminal and control terminal, and then this trigger pip is sent to this control switching circuit and power supply providing unit.
As further alternative technical scheme, this detecting unit comprises: power supply terminal, in order to provide high potential signal as trigger pip; Control terminal, be connected with this control switching circuit and power supply providing unit, switch, vicinity is located at this connector, with when this USB device is connected with the 2nd USB downstream ports by this connector, touch this switch and connect this power supply terminal and control terminal, and then this trigger pip is sent to this control switching circuit and power supply providing unit.
As further alternative technical scheme, be built in this electronic installation in this host apparatus.
As further alternative technical scheme, this bypass circuit and this first transmission line couple.
As further alternative technical scheme, this electronic installation also comprises the second multiplexer, this second multiplexer has input port, first output port and the second output port, wherein this input port and this function of tonic chord module couple, this first output port and this by-pass line couple, one USB downstream ports of this second output port and this USB line concentration circuit couples, when this detecting unit does not export this trigger pip, this second multiplexer is couple to this first output port this input port, wherein when this detecting unit exports this trigger pip, this second multiplexer is couple to this second output port this input port.
The present invention also provides a kind of electronic installation, USB device can be couple to host apparatus, and this USB device exports the first signal, and this electronic installation comprises: function of tonic chord module, exports the second signal; Connector, selectivity connects this USB device, to receive this first signal; First multiplexer, there is the first input port, the second input port and output port, this first input port couples this function of tonic chord module to receive this second signal, this output port couples this host apparatus, and this first multiplexer is optionally couple to one of this first input port and this both second input port this output port; USB line concentration circuit, it has a USB downstream ports, the 2nd USB downstream ports, port, USB upstream, one USB downstream ports couples this function of tonic chord module to receive this second signal, 2nd USB downstream ports couples this connector to receive this first signal, and this port, USB upstream couples this second input port of this first multiplexer; Detecting unit, is arranged near this connector, and when this connector connects this USB device, this detecting unit exports trigger pip; And power supply providing unit, optionally export electric energy to this USB line concentration circuit; Wherein when this detecting unit does not export this trigger pip, this power supply providing unit is not powered to this USB line concentration circuit, and this first multiplexer is couple to this first input port this output port, make this second signal without this USB line concentration circuit, this host apparatus can be delivered to by this first multiplexer; Wherein when this detecting unit exports this trigger pip, this power supply providing unit is powered to this USB line concentration circuit, and this first multiplexer is couple to this second input port this output port, this second signal and this first signal is made to be delivered to this host apparatus by this USB line concentration circuit and this first multiplexer.
As further alternative technical scheme, this electronic device applications is in USB interface keyboard, and the keypad function that this function of tonic chord module provides for this USB interface keyboard, this connector is arranged on this USB interface keyboard case.
As further alternative technical scheme, this detecting unit comprises: ground terminal, in order to provide low-potential signal as trigger pip; Control terminal, be connected with this first multiplexer and power supply providing unit, switch, vicinity is located at this connector, with when this USB device is connected with the 2nd USB downstream ports by this connector, touch this switch and connect this ground terminal and control terminal, and then this trigger pip is sent to this first multiplexer and power supply providing unit.
As further alternative technical scheme, this detecting unit comprises: power supply terminal, in order to provide high potential signal as trigger pip; Control terminal, be connected with this first multiplexer and power supply providing unit, switch, vicinity is located at this connector, with when this USB device is connected with the 2nd USB downstream ports by this connector, touch this switch and connect this power supply terminal and control terminal, and then this trigger pip is sent to this first multiplexer and power supply providing unit.
As further alternative technical scheme, this electronic installation also comprises: host side transmission line, by-pass line, the first transmission line and the second transmission line, wherein, a USB downstream ports of this USB line concentration circuit is coupled by this first transmission line and this function of tonic chord module; First input port of this first multiplexer is coupled by this by-pass line and this function of tonic chord module; Second input port of this first multiplexer is coupled by this second transmission line and this port, USB upstream; The output port of this first multiplexer is coupled by this host side transmission line and this host apparatus.
As further alternative technical scheme, this bypass circuit and this first transmission line couple.
As further alternative technical scheme, this electronic installation also comprises the second multiplexer, this second multiplexer has input port, first output port and the second output port, wherein this input port and this function of tonic chord module couple, this first output port and this by-pass line couple, one USB downstream ports of this second output port and this USB line concentration circuit couples, when this detecting unit does not export this trigger pip, this second multiplexer is couple to this first output port this input port, wherein when this detecting unit exports this trigger pip, this second multiplexer is couple to this second output port this input port.
Compared to known techniques, the present invention can detect the USB interface connector expanded and whether couple peripheral device, with detecting this USB interface connector under idle state, does not then provide electric energy to USB line concentration circuit, therefore can reach energy-conservation effect.Moreover decapacitation of the present invention provides outside USB interface extended function and electricity-saving function, also have providing of the function of tonic chord, and this function of tonic chord can share USB line concentration circuit with this extended function, therefore effectively reduce hardware cost.
Accompanying drawing explanation
Figure 1A of the present inventionly closes built-in usb hub to save the basic system architecture calcspar of the electronic installation of power consumption;
Figure 1B is the basic system architecture calcspar of the control switching circuit of Figure 1A;
Fig. 2 of the present inventionly closes built-in usb hub to save the product example of electronic device applications in USB interface keyboard of power consumption;
The specific embodiment that Fig. 3 is the detecting unit shown in Figure 1A;
Fig. 4 is the basic system architecture calcspar of a specific embodiment of the control switching circuit of Figure 1A;
Fig. 5 is basic system architecture calcspar of closing another embodiment of electronic installation of built-in usb hub of the present invention;
Fig. 6 of the present inventionly closes built-in usb hub with the basic system architecture calcspar of the electronic device applications of saving power consumption when host apparatus is inner.
Embodiment
For making there is further understanding to object of the present invention, structure, feature and function thereof, embodiment is hereby coordinated to be described in detail as follows.
Following content will be arranged in pairs or groups accompanying drawing, and by particular specific embodiment, technology contents of the present invention is described, person skilled in the art scholar can understand other advantages of the present invention and effect easily by content disclosed in the present specification.The present invention also can be implemented by other different specific embodiments or be applied.Every details in this instructions also based on different viewpoints and application, not deviating under spirit of the present invention, can carry out various modification and change.
As shown in Figure 1A, it is the basic system architecture calcspar of electronic installation of the present invention.USB device can be couple to host apparatus 2 by electronic installation 1, as shown in Figure 2, USB device 5 is such as the USB interface equipment of USB interface slide-mouse or USB interface Portable disk etc., host apparatus 2 is such as the computer system such as desktop computer or notebook computer, even also can be mobile communication device, host apparatus can be allowed by the function of tonic chord module 15 of single USB interface 41 connection of electronic devices 1 by electronic installation 1 of the present invention, host apparatus also can be allowed to connect extra USB device 5 by the usb hub of selective actuation electronic installation 1 simultaneously.
Electronic installation 1 of the present invention comprises: function of tonic chord module 15, first transmission line 115, connector 16, USB line concentration circuit 11, detecting unit 12 and control switching circuit 13, in the present embodiment, aforementioned function of tonic chord module 15 is keyboard circuit, therefore a specific embodiment of electronic installation 1 of the present invention can be the USB interface keyboard 4 of built-in USB connector 16 as shown in Figure 2, keyboard 4 shell is located at by connector 16, and keyboard 4 can be connected with host apparatus 2 by USB interface 41.This must supplementary notes, function of tonic chord module 15 is not limited only to keyboard circuit, that is, look closely implement kenel and can be different functional module group replace, such as: function of tonic chord module 15 can be touch-control circuit, then whole electronic installation 1 may be Trackpad; Or function of tonic chord module 15 can be slide-mouse circuit, then whole electronic installation 1 may be that mouse etc. also can.
USB line concentration circuit 11 is generally implemented by usb hub controller (USB Hub IC), as: Cypress CY7C656xx USB 2.0Hub Controller integrated circuit.Because USB Hub controller is the element that industry is known, for simplifying accompanying drawing and explanation, therefore for USB line concentration circuit 11, partial circuit relevant with the present invention in usb hub controller is only described below.USB line concentration circuit 11 has multiple USB downstream ports (USB downstream port), logical block 114 and port, a USB upstream 113 (USB upstreamport), in the present embodiment, the USB downstream ports quantity of USB line concentration circuit 11, for two explanations, can certainly adopt two or more USB downstream ports.In two USB downstream ports (110,111) in Figure 1A, USB downstream ports 110 is coupled with function of tonic chord module 15 by the first transmission line 115, function of tonic chord module 15 in the present embodiment will illustrate for keyboard circuit, and the first transmission line 115 is in order to transmit the keyboard signal of keyboard circuit to USB downstream ports 110; The USB interface signals that USB downstream ports 111 coupling connectors 16 exports to receive external USB device.Logical block 114, in order to coordinate signal received between each USB downstream ports (110,111), is sent to host apparatus 2 by port, USB upstream 113 after being integrated by the signal received by each USB downstream ports (110,111) smoothly.
Detecting unit 12 is arranged near connector 16, and when external USB devices is connected with connector 16, touch detecting unit 12 and send trigger pip, trigger pip is transferred into control switching circuit 13 and power supply providing unit 14 again.When external USB devices does not connect connector 16, detecting unit 12 stops sending trigger pip.Detecting unit 12 utilizes trigger pip to control following action: (1) control switching circuit 13 carries out circuit switching action, and whether (2) power supply providing unit 14 exports electric energy to USB line concentration circuit 11.
Control switching circuit 13 has the host side transmission line 130 be connected with host apparatus 2, the by-pass line 131 be connected with keyboard circuit, the second transmission line 132 of being connected with the port, USB upstream 113 of USB line concentration circuit 11, and wherein bypass circuit 131 is connected with the first transmission line 115; As described in epimere, control switching circuit 13 is connected to receive trigger pip with detecting unit 12.Because electronic installation 1 of the present invention is mainly in order to perform the transmission process of USB signal, therefore aforementioned host side transmission line 130, by-pass line 131, first transmission line 115 and the second transmission line 132 have data end (D+, D-) all respectively.
Please refer to Fig. 2 and Fig. 3, the specific embodiment that Fig. 3 is the detecting unit shown in Figure 1A, wherein detecting unit 12 ' comprising: ground terminal 121, control terminal 120 and the touch switch 122 be located near connector 16, wherein ground terminal 121 provides low-potential signal as trigger pip, and control terminal 120 is then connected with control switching circuit 13 and power supply providing unit 14.When USB device 5 is not connected with connector 16, touch switch 122 disconnects, and control terminal 120 connects power supply, and then high levels signal is sent to control switching circuit 13 and power supply providing unit 14.When USB device 5 is connected with connector 16, touch switch 122 conducting, and connect ground terminal 121 and control terminal 120, and then low-potential signal is sent to control switching circuit 13 and power supply providing unit 14, therefore the present embodiment is using low-potential signal as trigger pip.What remark additionally at this is, aforementioned control terminal 120 also can change and to be connected to below switch 122 contiguous ground terminal 121 side (being illustrated at this), trigger pip like this can also replace by high potential signal, does not limit using low-potential signal as trigger pip.
In details of the words, when connector 16 not yet connects external USB devices 5, when detecting unit (12 ' or 12) exports high potential signal, power supply providing unit 14 stops powering to USB line concentration circuit 11, and control switching circuit 13 makes host side transmission line 130 and by-pass line 131 be in on-state, i.e. circuit relation as shown in Figure 1A.Contrary, when connector 16 is connected to USB device 5, when detecting unit (12 ' or 12) thus exports electronegative potential trigger pip, power supply providing unit 14 pairs of USB line concentration circuit 11 are powered, and control switching circuit 13 carries out circuit switching action, host side transmission line 130 is switched to and the second transmission line 132 on-state by the on-state with by-pass line 131, i.e. circuit relation as shown in Figure 1B, this circuit switching and under electrical actuation, keyboard circuit 15 and USB device 5 can share USB line concentration circuit 11 and transmit data to host apparatus 2.
As from the foregoing, electronic installation of the present invention, when expand with USB interface connector be not connected with peripheral device time, can't power by the USB line concentration circuit higher to whole power consumption; In addition, the major function of the external extended function of user and electronic installation local terminal can be met according to the connection status of the USB interface connector expanded, therefore except reaching except effect of power saving in good time, the elasticity more in lifting gear use.
Please refer to Fig. 4, Fig. 4 is the basic system architecture calcspar of a specific embodiment of the control switching circuit of Figure 1A.Control switching circuit 13 in above-mentioned Figure 1A can be implemented by multiplexer 136, control switching circuit 13 ' like this can comprise: multiplexer 136, multiplexer 136 has the first input port 133, second input port 134 and output port 135, first input port 133 is coupled by by-pass line 131 and keyboard circuit functional module group, to receive keyboard signal, the second input port 134 of multiplexer 136 is coupled with port, USB upstream 113 by the second transmission line 132; The output port 135 of multiplexer 136 is coupled by host side transmission line 130 and host apparatus 2, optionally output port 135 is couple to the first input port 133 or the second input port 134 by multiplexer 136.
In like manner in aforementioned, when detecting unit 12 because connector 16 not yet connects USB device, therefore detecting unit 12 is not when exporting trigger pip, power supply providing unit 14 stops powering to USB line concentration circuit 11, and multiplexer 136 is couple to the first input port 133 output port 135, the keyboard signal that keyboard circuit is exported without USB line concentration circuit 11, but is delivered to host apparatus 2 by multiplexer 136.
Contrary, when detecting unit 12 exports trigger pip because connector 16 is connected to USB device, power supply providing unit 14 pairs of USB line concentration circuit 11 are powered, and multiplexer 136 is couple to the second input port 134 output port 135, the keyboard signal that keyboard circuit is exported is delivered to host apparatus 2 by USB line concentration circuit 11 and multiplexer 136.
In addition, please refer to Fig. 5, it is basic system architecture calcspar of closing built-in another embodiment of usb hub electronic installation of the present invention.The electronic installation 1 of the present embodiment " different from aforementioned Figure 1A or Fig. 4 be in: between function of tonic chord module 15 and control switching circuit (13 or 13 '), arrange multiplexer 17, multiplexer 17 has input port 170, first output port 171 and the second output port 172; According to detecting unit 12, " whether send trigger pip, multiplexer 17 is optionally couple to the first output port 171 or the second output port 172 input port 170.Input port 170 and function of tonic chord module 15 couple, and the first output port 171 couples with by-pass line 131, and the second output port 172 couples with the USB downstream ports 110 of USB line concentration circuit 11.
As shown in Figure 5, when connector 16 is not connected with USB device, detecting unit 12 " can not trigger pip be exported; therefore multiplexer 17 will make input port 170 and the first output port 171 connect; and then make function of tonic chord module 15 by by-pass line 131 and host apparatus 2 communication; and function of tonic chord module 15 is complete and USB downstream ports 110 is off-state; by multiplexer 17 open circuit; avoid USB downstream ports 110 to draw additional electrical energy from by-pass line 131, make the D+/D-electric signal between function of tonic chord module 15 and host apparatus 2 more stable.
On the contrary, if as shown in Figure 4, when by-pass line 131 continues to keep being connected with USB downstream ports 110, even if under USB line concentration circuit 11 is in off-position, the USB downstream ports 110 of USB line concentration circuit 11 still may draw electric energy from by-pass line 131, so easily cause the data end D+/D-electric signal of function of tonic chord module 15 to be affected by USB downstream ports 110 and too low, and allow host apparatus 2 and function of tonic chord module 15 stablize communication.
From the above, the effect that the multiplexer 17 of Fig. 5 provides signal to isolate, when making function of tonic chord module 15 with by-pass line 131 and host apparatus 2 communication, completely can affect by the USB downstream ports 110 of USB line concentration circuit 11, impel the communication between host apparatus 2 and function of tonic chord module 15 more stable.
Moreover please refer to Fig. 6, it is of the present inventionly close built-in usb hub with the basic system architecture calcspar of the electronic device applications of saving power consumption when host apparatus is inner.The present embodiment is different from aforementioned Figure 1A, Fig. 4 and Fig. 5 be in: electronic installation shown in aforementioned Figure 1A, Fig. 4 or Fig. 5 (1 or 1' or 1 ") be peripheral device (such as: keyboard, slide-mouse or Trackpad); then by USB transmission line, be connected in the USB connector of the electronic equipments such as mobile phone, notebook computer or the desktop computer performing operating system pluggablely.Fig. 6 embodiment then aforementioned electronic (1 or 1' or 1 ") itself is host apparatus 3 (such as: perform the electronic equipments such as the mobile phone of operating system or notebook computer), and host apparatus 3 also has motherboard unit 30.In addition, if when function of tonic chord module 15 is touch-control circuit, then host apparatus 3 can be the electronic installation such as panel computer or touch Smartphone, and in brief, looking closely enforcement kenel can replace function of tonic chord module 15 with different functional module group.
Above-described embodiment is illustrative principle of the present invention and effect only, but not for limiting the present invention.Any those skilled in the art all without prejudice under spirit of the present invention and category, can carry out modifying to above-described embodiment and change.Therefore, the scope of the present invention, should listed by the present patent application the scope of the claims.
Claims (15)
1. an electronic installation, can be couple to host apparatus by USB device, and this USB device exports the first signal, it is characterized in that this electronic installation comprises:
Function of tonic chord module, in order to export the second signal;
First transmission line, couples with this function of tonic chord module, to transmit this second signal;
Connector, selectivity connects this USB device, to receive this first signal;
USB line concentration circuit, there is a USB downstream ports, the 2nd USB downstream ports and port, USB upstream, one USB downstream ports couples this function of tonic chord module to receive this second signal by this first transmission line, and the 2nd USB downstream ports couples this connector to receive this first signal;
Detecting unit, is arranged near this connector, and when this connector connects this USB device, this detecting unit exports trigger pip;
Power supply providing unit, optionally exports electric energy to this USB line concentration circuit; And
Control switching circuit, there is the host side transmission line be connected with this host apparatus, the by-pass line be connected with this function of tonic chord module, the second transmission line of being connected with this port, USB upstream of this USB line concentration circuit, and this control switching circuit is connected with this detecting unit;
Wherein when this detecting unit does not export this trigger pip, this power supply providing unit is not powered to this USB line concentration circuit, and this control switching circuit makes this host side transmission line and this by-pass line be in on-state;
Wherein when this detecting unit exports this trigger pip, this power supply providing unit is powered to this USB line concentration circuit, and this control switching circuit makes this host side transmission line switch to the on-state with this second transmission line by the on-state with this by-pass line, sharing this USB line concentration circuit for this function of tonic chord module and this USB device must be connected with this host apparatus.
2. electronic installation as claimed in claim 1, it is characterized in that, this electronic device applications is in USB interface keyboard, and the keypad function that this function of tonic chord module provides for this USB interface keyboard, this connector is arranged on this USB interface keyboard case.
3. electronic installation as claimed in claim 1, it is characterized in that, this control switching circuit comprises: the first multiplexer, this first multiplexer has the first input port, the second input port and output port, this first input port is coupled by this by-pass line and this function of tonic chord module, and this second input port is coupled by this second transmission line and this port, USB upstream; The output port of this first multiplexer is coupled by this host side transmission line and this host apparatus.
4. electronic installation as claimed in claim 1, it is characterized in that, this detecting unit comprises:
Ground terminal, in order to provide low-potential signal as trigger pip;
Control terminal, is connected with this control switching circuit and power supply providing unit; And
Switch, vicinity is located at this connector, with when this USB device is connected with the 2nd USB downstream ports by this connector, touches this switch and connect this ground terminal and control terminal, and then this trigger pip is sent to this control switching circuit and power supply providing unit.
5. electronic installation as claimed in claim 1, it is characterized in that, this detecting unit comprises:
Power supply terminal, in order to provide high potential signal as trigger pip;
Control terminal, is connected with this control switching circuit and power supply providing unit; And
Switch, vicinity is located at this connector, with when this USB device is connected with the 2nd USB downstream ports by this connector, touches this switch and connect this power supply terminal and control terminal, and then this trigger pip is sent to this control switching circuit and power supply providing unit.
6. electronic installation as claimed in claim 1, is characterized in that, be built in this host apparatus in this electronic installation.
7. electronic installation as claimed in claim 6, it is characterized in that, this bypass circuit and this first transmission line couple.
8. electronic installation as claimed in claim 1, it is characterized in that this electronic installation also comprises the second multiplexer, this second multiplexer has input port, first output port and the second output port, wherein this input port and this function of tonic chord module couple, this first output port and this by-pass line couple, one USB downstream ports of this second output port and this USB line concentration circuit couples, when this detecting unit does not export this trigger pip, this second multiplexer is couple to this first output port this input port, wherein when this detecting unit exports this trigger pip, this second multiplexer is couple to this second output port this input port.
9. an electronic installation, can be couple to host apparatus by USB device, and this USB device exports the first signal, it is characterized in that this electronic installation comprises:
Function of tonic chord module, in order to export the second signal;
Connector, selectivity connects this USB device, to receive this first signal;
First multiplexer, there is the first input port, the second input port and output port, this first input port couples this function of tonic chord module to receive this second signal, this output port couples this host apparatus, and this first multiplexer is optionally couple to one of this first input port and this both second input port this output port;
USB line concentration circuit, it has a USB downstream ports, the 2nd USB downstream ports, port, USB upstream, one USB downstream ports couples this function of tonic chord module to receive this second signal, 2nd USB downstream ports couples this connector to receive this first signal, and this port, USB upstream couples this second input port of this first multiplexer;
Detecting unit, is arranged near this connector, and when this connector connects this USB device, this detecting unit exports trigger pip; And
Power supply providing unit, optionally exports electric energy to this USB line concentration circuit;
Wherein when this detecting unit does not export this trigger pip, this power supply providing unit is not powered to this USB line concentration circuit, and this first multiplexer is couple to this first input port this output port, make this second signal without this USB line concentration circuit, this host apparatus can be delivered to by this first multiplexer;
Wherein when this detecting unit exports this trigger pip, this power supply providing unit is powered to this USB line concentration circuit, and this first multiplexer is couple to this second input port this output port, this second signal and this first signal is made to be delivered to this host apparatus by this USB line concentration circuit and this first multiplexer.
10. electronic installation as claimed in claim 9, it is characterized in that, this electronic device applications is in USB interface keyboard, and the keypad function that this function of tonic chord module provides for this USB interface keyboard, this connector is arranged on this USB interface keyboard case.
11. electronic installations as claimed in claim 9, it is characterized in that, this detecting unit comprises:
Ground terminal, in order to provide low-potential signal as trigger pip;
Control terminal, is connected with this first multiplexer and power supply providing unit; And
Switch, vicinity is located at this connector, with when this USB device is connected with the 2nd USB downstream ports by this connector, touches this switch and connect this ground terminal and control terminal, and then this trigger pip is sent to this first multiplexer and power supply providing unit.
12. electronic installations as claimed in claim 9, it is characterized in that, this detecting unit comprises:
Power supply terminal, in order to provide high potential signal as trigger pip;
Control terminal, is connected with this first multiplexer and power supply providing unit; And
Switch, vicinity is located at this connector, with when this USB device is connected with the 2nd USB downstream ports by this connector, touches this switch and connect this power supply terminal and control terminal, and then this trigger pip is sent to this first multiplexer and power supply providing unit.
13. electronic installations as claimed in claim 9, it is characterized in that this electronic installation also comprises: host side transmission line, by-pass line, the first transmission line and the second transmission line, wherein, a USB downstream ports of this USB line concentration circuit is coupled by this first transmission line and this function of tonic chord module; First input port of this first multiplexer is coupled by this by-pass line and this function of tonic chord module; Second input port of this first multiplexer is coupled by this second transmission line and this port, USB upstream; The output port of this first multiplexer is coupled by this host side transmission line and this host apparatus.
14. electronic installations as claimed in claim 13, is characterized in that, this bypass circuit and this first transmission line couple.
15. electronic installations as claimed in claim 13, it is characterized in that this electronic installation also comprises the second multiplexer, this second multiplexer has input port, first output port and the second output port, wherein this input port and this function of tonic chord module couple, this first output port and this by-pass line couple, one USB downstream ports of this second output port and this USB line concentration circuit couples, when this detecting unit does not export this trigger pip, this second multiplexer is couple to this first output port this input port, wherein when this detecting unit exports this trigger pip, this second multiplexer is couple to this second output port this input port.
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