CN104461992B - Electronic device - Google Patents
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- CN104461992B CN104461992B CN201410605116.8A CN201410605116A CN104461992B CN 104461992 B CN104461992 B CN 104461992B CN 201410605116 A CN201410605116 A CN 201410605116A CN 104461992 B CN104461992 B CN 104461992B
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- usb
- signal
- electronic device
- connector
- multiplexer
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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
-
- 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
-
- 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
Present invention offer is a kind of to close built-in usb hub to save the electronic device of power consumption, and electronic device of the invention includes function of tonic chord module, and can pass through connector circumscribed USB equipment；When the device of the invention, which detects the connector, is not connected with the USB device, stop powering to the usb hub, and the signal of the function of tonic chord module is made to be transmitted to host apparatus by bypass path；When detecting the connector and connecting the USB device, then power to the usb hub, and the signal of the function of tonic chord module is made to be switched to the transmission path shared with the extended function, the function of tonic chord is made to be transmitted to the host apparatus commonly through the usb hub with the extended function.The electronic device of the present invention can reach effect that is energy saving and reducing hardware cost.
Description
Technical field
More specifically the present invention, is applied on USB set line circuit about one kind about a kind of electronic device and provides province
Electric treatment closes built-in usb hub to save the electronic device of power consumption.
Background technology
Due to universal serial bus (Universal Serial Bus；USB) have and support hot plug (Hot
Swapping or Hot plugging) and plug and play (Plug and Play；PNP characteristic), therefore be widely used
It is applied in a kind of output-input interface in computer system and peripheral device line or even also on Mobile Communications product, therefore,
USB interface seems to have become the connector for mainstream.
In addition, industrial circle to expand the original output-input interface of electronic equipment, more releases usb hub or tool USB set line
The USB interface extension facility of the USB interface keyboard of circuit etc., the USB set line circuit provided by the USB interface extension facility
Allow user can be with more flexible external peripheral device.
But, aforementioned USB interface extension facility is in any peripheral device of the non-grafting of its USB connector, USB set line electricity
USB controller in road is still expending electric power, therefore how while USB interface extended function is provided can also reach energy saving effect
Fruit is to desire most ardently the subject probed at present.
Invention content
In view of the variety of problems of above-mentioned known techniques, the purpose of the present invention is to provide one kind can close built-in USB set line
Device has both USB interface extended function and electricity-saving function to save the electronic device of power consumption.
In order to achieve the above objectives, the present invention provides a kind of electronic device, can USB device be couple to host apparatus, the USB
Device exports the first signal, which includes：Function of tonic chord module exports the second signal；First transmission line road, with the main work(
Energy module coupling, to transmit second signal；Connector selectively connects the USB device, to receive first signal；USB set
Line circuit, have the first USB downstream ports, the 2nd USB downstream ports and USB upstreams port, the first USB downstream ports by this first
Transmission line couples the function of tonic chord module to receive second signal, and the 2nd USB downstream ports couple the connector to receive this
First signal；Detecting unit is set near the connector, when the connector connects the USB device, detecting unit output
Trigger signal；Power supply provides unit, selectively exports electric energy to the USB set line circuit；And control switching circuit, have
The host side transmission line that is connect with the host apparatus, the by-pass line being connect with the function of tonic chord module, with the USB set line circuit
The connection of USB upstreams port second transmission line road, and the control switching circuit is connect with the detecting unit；Wherein in the detecting list
When member does not export the trigger signal, which provides unit and does not power to the USB set line circuit, and the control switching circuit makes this
Host side transmission line and the by-pass line are in an ON state；Wherein when the detecting unit exports the trigger signal, the electricity
Source provide unit to the USB set line circuit power, and the control switching circuit make the host side transmission line by with the by-pass line
The on-state on road is switched to the on-state with the second transmission line road, so that the function of tonic chord module is shared with the USB device
The USB set line circuit is obtained and is connect with the host apparatus.
As further alternative technical solution, the electronic device applications are in USB interface keyboard, and function of tonic chord module is is somebody's turn to do
The keypad function that USB interface keyboard is provided, the connector are set on the USB interface keyboard case.
As further alternative technical solution, which includes：First multiplexer, the first multiplexing utensil
There are the first input port, the second input port and output port, which is coupled by the by-pass line and the function of tonic chord module,
Second input port of first multiplexer is coupled by the second transmission line road and the USB upstreams port；First multiplexer it is defeated
It goes out of the port and is coupled by the host side transmission line and the host apparatus.
As further alternative technical solution, detecting unit includes：Ground terminal, to provide low-potential signal conduct
Trigger signal；Control terminal provides unit with the control switching circuit and power supply and connect, switchs, neighbouring to be set on the connector, with
When the USB device is connect by the connector with the 2nd USB downstream ports, touch the switch and connect the ground terminal and control
Terminal processed, and then the trigger signal is sent to the control switching circuit and power supply provides unit.
As further alternative technical solution, which includes：Power supply terminal is made to provide high potential signal
For trigger signal；Control terminal provides unit with the control switching circuit and power supply and connect, switchs, neighbouring to be set on the connector,
Connected with when the USB device is connect by the connector with the 2nd USB downstream ports, touching the switch power supply terminal and
Control terminal, and then the trigger signal is sent to the control switching circuit and power supply provides unit.
As further alternative technical solution, which is built into the host apparatus.
As further alternative technical solution, which couples with the first transmission line road.
As further alternative technical solution, which further includes the second multiplexer, which has
Input port, the first output port and the second output port, the wherein input port are coupled with the function of tonic chord module, and first output port is with being somebody's turn to do
By-pass line couples, and the first USB downstream ports of second output port and the USB set line circuit couple, when the detecting unit is not defeated
When going out the trigger signal, which is couple to first output port the input port, wherein when the detecting unit exports
During the trigger signal, which is couple to second output port the input port.
The present invention also provides a kind of electronic devices, can USB device be couple to host apparatus, USB device output first
Signal, the electronic device include：Function of tonic chord module exports the second signal；Connector selectively connects the USB device, to receive
First signal；First multiplexer, has the first input port, the second input port and output port, which couples the master
For functional module group to receive second signal, which couples the host apparatus, and first multiplexer is optionally defeated this
It goes out of the port and is couple to first input port and the second input port alternative one；USB set line circuit, have the first USB downstream ports,
2nd USB downstream ports, USB upstreams port, the first USB downstream ports couple the function of tonic chord module to receive second signal, this
Two USB downstream ports couple the connector to receive first signal, the USB upstreams port couple first multiplexer this is second defeated
Enter port；Detecting unit is set near the connector, when the connector connects the USB device, detecting unit output triggering
Signal；And power supply provides unit, selectively exports electric energy to the USB set line circuit；Wherein when the detecting unit does not export
During the trigger signal, which provides unit and does not power to the USB set line circuit, and first multiplexer couples the output port
To first input port, make second signal that can be transmitted to the host by first multiplexer without the USB set line circuit
Device；Wherein when the detecting unit exports the trigger signal, which provides unit and powers to the USB set line circuit, and should
The output port is couple to second input port by the first multiplexer, and second signal is made to pass through the USB set line with first signal
Circuit and first multiplexer are transmitted to the host apparatus.
As further alternative technical solution, the electronic device applications are in USB interface keyboard, and the function of tonic chord module is is somebody's turn to do
The keypad function that USB interface keyboard is provided, the connector are set on the USB interface keyboard case.
As further alternative technical solution, which includes：Ground terminal is made to provide low-potential signal
For trigger signal；Control terminal provides unit with first multiplexer and power supply and connect, switchs, neighbouring to be set on the connector, with
When the USB device is connect by the connector with the 2nd USB downstream ports, touch the switch and connect the ground terminal and control
Terminal processed, and then the trigger signal is sent to first multiplexer and power supply provides unit.
As further alternative technical solution, which includes：Power supply terminal is made to provide high potential signal
For trigger signal；Control terminal provides unit with first multiplexer and power supply and connect, switchs, neighbouring to be set on the connector, with
When the USB device is connect by the connector with the 2nd USB downstream ports, touch the switch and connect the power supply terminal and control
Terminal processed, and then the trigger signal is sent to first multiplexer and power supply provides unit.
As further alternative technical solution, which further includes：Host side transmission line, by-pass line,
One transmission line and second transmission line road, wherein, the first USB downstream ports of the USB set line circuit pass through the first transmission line
Road is coupled with the function of tonic chord module；First input port of first multiplexer passes through the by-pass line and the function of tonic chord module coupling
It connects；Second input port of first multiplexer is coupled by the second transmission line road and the USB upstreams port；First multiplexer
Output port is coupled by the host side transmission line and the host apparatus.
As further alternative technical solution, which couples with the first transmission line road.
As further alternative technical solution, which further includes the second multiplexer, which has
Input port, the first output port and the second output port, the wherein input port are coupled with the function of tonic chord module, and first output port is with being somebody's turn to do
By-pass line couples, and the first USB downstream ports of second output port and the USB set line circuit couple, when the detecting unit is not defeated
When going out the trigger signal, which is couple to first output port the input port, wherein when the detecting unit exports
During the trigger signal, which is couple to second output port the input port.
Compared to known techniques, whether the USB interface connector that the present invention can detect expansion couples peripheral device, with
The USB interface connector is detected under idle state, then not provide electric energy to USB set line circuit, therefore can reach energy-efficient effect
Fruit.Furthermore the present invention also has an offer of the function of tonic chord in addition to it can provide USB interface extended function and electricity-saving function, and the master
Function can share USB set line circuit with the extended function, therefore effectively reduce hardware cost.
Description of the drawings
Figure 1A closes built-in usb hub to save the fundamental system frame of the electronic device of power consumption for the present invention's
Structure block diagram；
Figure 1B is the basic system architecture block diagram of the control switching circuit of Figure 1A；
Fig. 2 closes built-in usb hub to save the electronic device applications of power consumption in USB interface for the present invention's
One product example of keyboard；
Fig. 3 is a specific embodiment of detecting unit shown in figure 1A；
Fig. 4 is the basic system architecture block diagram of a specific embodiment of the control switching circuit of Figure 1A；
Fig. 5 is the basic system architecture side of another embodiment of electronic device for closing built-in usb hub of the present invention
Block diagram；
Fig. 6 is closing built-in usb hub and being filled with saving the electronic device applications of power consumption in host for the present invention
Put basic system architecture block diagram during inside.
Specific embodiment
To make have further understanding to the purpose of the present invention, construction, feature and its function, hereby coordinate embodiment detailed
It is described as follows.
The following contents will arrange in pairs or groups attached drawing, and the technology contents of the present invention are illustrated by particular specific embodiment, are familiar with this skill
The personage of art can be understood other advantages and effect of the present invention easily by content disclosed in the present specification.The present invention also can be by
It is implemented or is applied by other different specific embodiments.The various details in this specification can also be based on different viewpoints with answering
With, under the spirit without departing substantially from the present invention, the various modifications of progress and change.
As shown in Figure 1A, the basic system architecture block diagram for the electronic device of the present invention.Electronic device 1 can be by USB
Device is couple to host apparatus 2, as shown in Fig. 2, USB device 5 is, for example, the USB of USB interface slide-mouse or USB interface Portable disk etc.
Interface equipment, host apparatus 2 are, for example, the computer systems such as desktop computer or notebook computer or even are alternatively Mobile Communications dress
Put, by the present invention electronic device 1 can allow host apparatus by single USB interface 41 connect electronic device 1 function of tonic chord module
15, while host apparatus can also be allowed to pass through the usb hub of selective actuation electronic device 1 to connect additional USB device 5.
The electronic device 1 of the present invention includes：Function of tonic chord module 15, first transmission line road 115, connector 16, USB set line electricity
Road 11, detecting unit 12 and control switching circuit 13, in this present embodiment, aforementioned function of tonic chord module 15 are keyboard circuit, therefore
One specific embodiment of the electronic device 1 of the present invention can be the USB interface keyboard 4 of built-in USB connector 16 as shown in Figure 2,
Connector 16 is set on 4 shell of keyboard, and keyboard 4 can be connect by USB interface 41 with host apparatus 2.It must remark additionally herein,
Function of tonic chord module 15 is not limited only to keyboard circuit, also that is, end regards implementation kenel and can be different functional module group replace, example
Such as：Function of tonic chord module 15 can be touch-control circuit, then entire electronic device 1 may be Trackpad；Or function of tonic chord module 15 can be to slide
Mouse circuit, then entire electronic device 1 may be that mouse etc. also may be used.
USB set line circuit 11 is generally implemented by usb hub controller (USB Hub IC), such as：Cypress
CY7C656xx USB 2.0Hub Controller integrated circuit.Since USB Hub controllers are element known to industry, it is
Simplify attached drawing and explanation, therefore only illustrate portion related to the present invention in usb hub controller below for USB set line circuit 11
Parallel circuit.USB set line circuit 11 has multiple USB downstream ports (USB downstream port), logic unit 114 and one
A USB upstreams port 113 (USB upstream port), in this present embodiment, the USB downstream ports quantity of USB set line circuit 11 with
Illustrate for two, naturally it is also possible to use two or more USB downstream ports.Two USB downstream ports in Figure 1A
In (110,111), USB downstream ports 110 are coupled by first transmission line road 115 and function of tonic chord module 15, the master in the present embodiment
Functional module group 15 will illustrate by taking keyboard circuit as an example, and first transmission line road 115 is transmitting the keyboard signal of keyboard circuit to USB
Downstream ports 110；111 coupling connectors 16 of USB downstream ports are to receive the USB interface signal that external USB device is exported.Logic
Unit 114 to coordinate received signal between each USB downstream ports (110,111), with smoothly by each USB downstream ports (110,
111) host apparatus 2 is transmitted to by USB upstreams port 113 after the signal integration received by.
Detecting unit 12 is set near connector 16, and when external USB devices are connect with connector 16, it is single to touch detecting
Member 12 and send out trigger signal, trigger signal is transferred into control switching circuit 13 and power supply and provides unit 14 again.Work as outside
When USB device is not connected with connector 16, the stopping of detecting unit 12 sends out trigger signal.Detecting unit 12 is controlled using trigger signal
It acts below：(1) control switching circuit 13 carries out circuit switching action, and (2) power supply provides whether unit 14 exports electric energy to USB
Line concentration circuit 11.
Control switching circuit 13 has the host side transmission line 130 being connect with host apparatus 2, connect with keyboard circuit
By-pass line 131, wherein the second transmission line road 132 being connect with the USB upstreams port 113 of USB set line circuit 11, bypass transmission line
Road 131 is connect with first transmission line road 115；As described in epimere, control switching circuit 13 is connect with detecting unit 12 to be touched with receiving
It signals.Since the electronic device 1 of the present invention is mainly the transmission process to perform USB signals, therefore aforementioned host side is transmitted
Circuit 130, by-pass line 131, first transmission line road 115 and second transmission line road 132 are all respectively provided with data end (D+, D-).
It please refers to Fig.2 and a specific embodiment that Fig. 3, Fig. 3 are detecting unit shown in figure 1A, wherein detecting unit 12 '
Including：Ground terminal 121, control terminal 120 and the touch switch 122 near connector 16, wherein ground terminal 121
Low-potential signal is provided as trigger signal, and control terminal 120 then provides unit 14 with control switching circuit 13 and power supply and connects
It connects.When USB device 5 is not connect with connector 16, touch switch 122 disconnects, and control terminal 120 connects power supply, and then will be high
Level signal is sent to control switching circuit 13 and power supply provides unit 14.When USB device 5 is connect with connector 16, touch
Dynamic 122 conducting of switch, and ground terminal 121 and control terminal 120 are connected, and then low-potential signal is sent to switching control electricity
Road 13 and power supply provide unit 14, therefore the present embodiment is using low-potential signal as trigger signal.It remarks additionally herein, it is preceding
It states control terminal 120 and can also change and be connected to 122 neighbouring 121 side of ground terminal (not illustrated herein) in lower section of switch, so touch
Signalling can also be replaced, and unlimited using low-potential signal as trigger signal with high potential signal.
In details of the words, when connector 16 not yet connects external USB devices 5, detecting unit (12 ' or 12) output high potential letter
Number when, power supply provide unit 14 stops powering to USB set line circuit 11, and control switching circuit 13 makes host side transmission line
130 with by-pass line 131 in an ON state, i.e., circuit relationship as shown in Figure 1A.Opposite, when connector 16 is connected to
When USB device 5, detecting unit (12 ' or 12) thus output low potential trigger signal, power supply provides unit 14 to USB set line electricity
Road 11 is powered, and control switching circuit 13 carry out circuit switching action, make host side transmission line 130 by with by-pass line
131 on-state be switched to 132 on-state of second transmission line road, i.e., circuit relationship as shown in Figure 1B, this circuit cuts
It changes and under electrical actuation, keyboard circuit 15 can share 11 transmission data of USB set line circuit to host apparatus 2 with USB device 5.
From the foregoing, it will be observed that the electronic device of the present invention, when the USB interface connector of expansion is not connect with peripheral device
When, USB set line circuit that can't be higher to whole power consumption is powered；In addition, it can be connected according to the USB interface of expansion
The connection status of device meets the major function of the external extended function of user and electronic device local terminal, therefore except reaching in due course
Outside the effect of power saving, the elasticity in more lifting device use.
It please refers to Fig.4, Fig. 4 is the basic system architecture block diagram 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, and such control switching circuit 13 ' can wrap
It includes：Multiplexer 136, multiplexer 136 have the first input port 133, the second input port 134 and output port 135, the first input port
133 are coupled by by-pass line 131 and keyboard circuit functional module group, to receive keyboard signal, the second input port of multiplexer 136
134 are coupled by second transmission line road 132 and USB upstreams port 113；The output port 135 of multiplexer 136 passes through host side transmission line
Road 130 is coupled with host apparatus 2, by multiplexer 136 optionally output port 135 be couple to the first input port 133 or
Second input port 134.
Similarly in aforementioned, when detecting unit 12 because connector 16 not yet connects USB device, therefore detecting unit 12 does not export
During trigger signal, power supply, which provides unit 14, to be stopped powering to USB set line circuit 11, and multiplexer 136 is couple to output port 135
First input port 133 makes the keyboard signal that keyboard circuit is exported without USB set line circuit 11, but passes through multiplexer 136
It is transmitted to host apparatus 2.
Opposite, when detecting unit 12 exports trigger signal due to connector 16 is connected to USB device, power supply provides single
First 14 pairs of USB set line circuits 11 are powered, and output port 135 is couple to the second input port 134 by multiplexer 136, makes keyboard circuit
The keyboard signal exported can be transmitted to host apparatus 2 by USB set line circuit 11 and multiplexer 136.
In addition, Fig. 5 is please referred to, the base for closing built-in another embodiment of usb hub electronic device for the present invention
This system framework block diagram.The electronic device 1 " of the present embodiment and earlier figures 1A or Fig. 4 difference be in：In function of tonic chord module 15
Multiplexer 17 is set between control switching circuit (13 or 13 '), and multiplexer 17 has input port 170, the first output port 171 and the
Two output ports 172；" trigger signal whether is sent out, multiplexer 17 optionally couples input port 170 according to detecting unit 12
To the first output port 171 or the second output port 172.Input port 170 is coupled with function of tonic chord module 15, the first output port 171 and side
Route road 131 couples, and the USB downstream ports 110 of the second output port 172 and USB set line circuit 11 couple.
As shown in figure 5, when connector 16 is not connect with USB device, detecting unit 12 " will not export trigger signal, therefore
Multiplexer 17 will be such that input port 170 is connected with the first output port 171, so make function of tonic chord module 15 by by-pass line 131 with
Host apparatus 2 communicates, and function of tonic chord module 15 be completely with USB downstream ports 110 in off-state, by 17 open circuit of multiplexer,
USB downstream ports 110 is avoided to draw additional electrical energy from by-pass line 131, make the D+/D- between function of tonic chord module 15 and host apparatus 2
Electric signal is more stable.
On the contrary, if as shown in figure 4, by-pass line 131 is persistently kept when being connect with USB downstream ports 110, even if USB set
Line circuit 11 is under off-position, and the USB downstream ports 110 of USB set line circuit 11 still may draw electricity from by-pass line 131
Can, so easily cause the data end D+/D- electric signals of function of tonic chord module 15 is influenced and too low by USB downstream ports 110, and allows host
Device 2 can not stablize communication with function of tonic chord module 15.
It can be seen from the above, the multiplexer 17 of Fig. 5 provides the effect of signal isolation, make function of tonic chord module 15 with by-pass line
131 with host apparatus 2 communicate when, can not influenced completely by the USB downstream ports 110 of USB set line circuit 11, host is promoted to fill
The communication put between 2 and function of tonic chord module 15 is more stable.
Furthermore please refer to Fig. 6, for the present invention close built-in usb hub with save the electronics of power consumption dress
Basic system architecture block diagram when putting applied to inside host apparatus.The present embodiment is different from earlier figures 1A, Fig. 4 and Fig. 5
Be in：Earlier figures 1A, Fig. 4 or electronic device shown in fig. 5 (1 or 1' or 1 ") for peripheral device (such as：Keyboard, slide-mouse or
Trackpad), then by USB transmission line, it is connected to mobile phone, notebook computer or the desktop for performing operating system pluggablely
On the USB connector of the electronic equipments such as computer.And then aforementioned electronic (1 or 1' or 1 ") itself is host to Fig. 6 embodiments
Device 3 (such as：Perform the electronic equipments such as mobile phone or the notebook computer of operating system), host apparatus 3 also has motherboard list
Member 30.In addition, when if function of tonic chord module 15 is touch-control circuit, host apparatus 3 can be tablet computer or the intelligent hand of touch
The electronic devices such as machine can be replaced function of tonic chord module 15 with different functional module group in short, end regards implementation kenel.
The principle of the present invention and effect is only illustrated in above-described embodiment, and is not intended to limit the present invention.Any ability
Domain personnel can modify above-described embodiment and changed under the spirit and scope without prejudice to the present invention.Therefore, it is of the invention
Rights protection scope, should be as listed by scope of the present invention patent.
Claims (14)
1. USB device can be couple to host apparatus by a kind of electronic device, which exports the first signal, it is characterised in that
The electronic device includes：
Function of tonic chord module, to export the second signal；
First transmission line road is coupled with the function of tonic chord module, to transmit second signal；
Connector selectively connects the USB device, to receive first signal；
USB set line circuit, has the first USB downstream ports, the 2nd USB downstream ports and USB upstreams port, and the first USB downstream ports are led to
It crosses the first transmission line road and couples the function of tonic chord module to receive second signal, the 2nd USB downstream ports couple the connector
To receive first signal；
Detecting unit is set near the connector, when the connector connects the USB device, detecting unit output triggering
Signal；
Power supply provides unit, selectively exports electric energy to the USB set line circuit；And
Control switching circuit has the host side transmission line being connect with the host apparatus, the side being connect with the function of tonic chord module
Route road, the second transmission line road being connect with the USB upstreams port of the USB set line circuit, and the control switching circuit is detectd with this
Survey unit connection；
The control switching circuit includes：First multiplexer, first multiplexer have the first input port, the second input port and output
Port, first input port are coupled by the by-pass line and the function of tonic chord module, which passes through the second transmission line
Road is coupled with the USB upstreams port；The output port of first multiplexer is coupled by the host side transmission line and the host apparatus；
Wherein when the detecting unit does not export the trigger signal, which provides unit and does not power to the USB set line circuit, and
The control switching circuit makes first input port be coupled with the output port, and the host side transmission line is made to be in the by-pass line
On-state makes the signal that the function of tonic chord module is exported pass through first multiplexer and the by-pass line to be transmitted to the host
Device；
Wherein when the detecting unit exports the trigger signal, which provides unit and powers to the USB set line circuit, and this is cut
Changing control circuit makes the host side transmission line be switched to and the second transmission line road by the on-state with the by-pass line
On-state must connect so that the function of tonic chord module shares the USB set line circuit with the USB device with the host apparatus.
2. electronic device as described in claim 1, which is characterized in that the electronic device applications are in USB interface keyboard, the main work(
The keypad function that energy module is provided for the USB interface keyboard, the connector are set on the USB interface keyboard case.
3. electronic device as described in claim 1, which is characterized in that the detecting unit includes：
Ground terminal, to provide low-potential signal as trigger signal；
Control terminal provides unit with the control switching circuit and power supply and connect；And
Switch, it is neighbouring to be set on the connector, when the USB device is connect by the connector with the 2nd USB downstream ports, to touch
It moves the switch and connects the ground terminal and control terminal, and then the trigger signal is sent to the control switching circuit and electricity
Source provides unit.
4. electronic device as described in claim 1, which is characterized in that the detecting unit includes：
Power supply terminal, to provide high potential signal as trigger signal；
Control terminal provides unit with the control switching circuit and power supply and connect；And
Switch, it is neighbouring to be set on the connector, when the USB device is connect by the connector with the 2nd USB downstream ports, to touch
It moves the switch and connects the power supply terminal and control terminal, and then the trigger signal is sent to the control switching circuit and electricity
Source provides unit.
5. electronic device as described in claim 1, which is characterized in that the electronic device is built into the host apparatus.
6. electronic device as claimed in claim 5, which is characterized in that the by-pass line is coupled with the first transmission line road.
7. electronic device as described in claim 1, it is characterised in that the electronic device further includes the second multiplexer, this more than second
Work tool has input port, the first output port and the second output port, and wherein the input port is coupled with the function of tonic chord module, this is first defeated
It goes out of the port and is coupled with the by-pass line, the first USB downstream ports of second output port and the USB set line circuit couple, when the detecting
When unit does not export the trigger signal, which is couple to first output port the input port, wherein when the detecting
When unit exports the trigger signal, which is couple to second output port the input port.
8. USB device can be couple to host apparatus by a kind of electronic device, which exports the first signal, it is characterised in that
The electronic device includes：
Function of tonic chord module, to export the second signal；
Connector selectively connects the USB device, to receive first signal；
First multiplexer, has the first input port, the second input port and output port, which couples the function of tonic chord module
To receive second signal, which couples the host apparatus, which optionally couples the output port
To first input port and the second input port alternative one；
USB set line circuit has the first USB downstream ports, the 2nd USB downstream ports, USB upstreams port, the first USB downstream ports couplings
The function of tonic chord module is connect to receive second signal, the 2nd USB downstream ports couple the connector to receive first signal, should
USB upstreams port couples second input port of first multiplexer；
Detecting unit is set near the connector, when the connector connects the USB device, detecting unit output triggering
Signal；And
Power supply provides unit, selectively exports electric energy to the USB set line circuit；
Wherein when the detecting unit does not export the trigger signal, which provides unit and does not power to the USB set line circuit, and
The output port is couple to first input port by first multiplexer, makes second signal that can lead to without the USB set line circuit
It crosses first multiplexer and is transmitted to the host apparatus；
Wherein when the detecting unit exports the trigger signal, which provides unit and powers to the USB set line circuit, and this
The output port is couple to second input port by one multiplexer, and second signal is made to pass through USB set line electricity with first signal
Road and first multiplexer are transmitted to the host apparatus.
9. electronic device as claimed in claim 8, which is characterized in that the electronic device applications are in USB interface keyboard, the main work(
The keypad function that energy module is provided for the USB interface keyboard, the connector are set on the USB interface keyboard case.
10. electronic device as claimed in claim 8, which is characterized in that the detecting unit includes：
Ground terminal, to provide low-potential signal as trigger signal；
Control terminal provides unit with first multiplexer and power supply and connect；And
Switch, it is neighbouring to be set on the connector, when the USB device is connect by the connector with the 2nd USB downstream ports, to touch
It moves the switch and connects the ground terminal and control terminal, and then the trigger signal is sent to first multiplexer and power supply
Unit is provided.
11. electronic device as claimed in claim 10, which is characterized in that the detecting unit includes：
Power supply terminal, to provide high potential signal as trigger signal；
Control terminal provides unit with first multiplexer and power supply and connect；And
Switch, it is neighbouring to be set on the connector, when the USB device is connect by the connector with the 2nd USB downstream ports, to touch
It moves the switch and connects the power supply terminal and control terminal, and then the trigger signal is sent to first multiplexer and power supply
Unit is provided.
12. electronic device as claimed in claim 8, it is characterised in that the electronic device further includes：Host side transmission line, side
Route road, first transmission line road and second transmission line road, wherein, the first USB downstream ports of the USB set line circuit by this
One transmission line is coupled with the function of tonic chord module；First input port of first multiplexer passes through the by-pass line and the function of tonic chord
Module couples；Second input port of first multiplexer is coupled by the second transmission line road and the USB upstreams port；This more than first
The output port of work device is coupled by the host side transmission line and the host apparatus.
13. electronic device as claimed in claim 12, which is characterized in that the by-pass line is coupled with the first transmission line road.
14. electronic device as claimed in claim 12, it is characterised in that the electronic device further includes the second multiplexer, this second
Multiplexer has input port, the first output port and the second output port, and the wherein input port is coupled with the function of tonic chord module, this first
Output port is coupled with the by-pass line, and the first USB downstream ports of second output port and the USB set line circuit couple, when this is detectd
When survey unit does not export the trigger signal, which is couple to first output port the input port, wherein when this is detectd
When survey unit exports the trigger signal, which is couple to second output port the input port.
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| CN201410605116.8A CN104461992B (en) | 2014-10-31 | 2014-10-31 | Electronic device |
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| CN201410605116.8A CN104461992B (en) | 2014-10-31 | 2014-10-31 | Electronic device |
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| CN104461992B true CN104461992B (en) | 2018-07-06 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10224727B2 (en) * | 2015-06-30 | 2019-03-05 | Dong-Sheng Li | Multi-functional hub integrated with AC power supply |
| EP3374841A4 (en) * | 2015-11-13 | 2019-06-26 | Texas Instruments Incorporated | Usb interface circuit and method for low power operation |
| CN105807896B (en) * | 2016-05-09 | 2018-06-15 | 苏州通云信息科技有限公司 | A kind of USB shares the Energy Saving Control USB port of cabinet |
| CN206209704U (en) * | 2016-09-14 | 2017-05-31 | 广州视睿电子科技有限公司 | A kind of USB peripheral device |
| CN108108315B (en) * | 2016-11-25 | 2020-06-16 | 英业达科技有限公司 | Interface switching device and interface switching method |
| CN111327498B (en) * | 2018-12-14 | 2022-04-19 | 南台学校财团法人南台科技大学 | Power line communication module, system and signal transmission method for vehicle diagnosis information |
| CN115113954A (en) * | 2021-03-17 | 2022-09-27 | 旺玖科技股份有限公司 | Vehicle-mounted entertainment system with operation interface switching function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1578941A (en) * | 2001-01-18 | 2005-02-09 | 国际商业机器公司 | Power managing in a system having internal USB hub |
| CN101622612A (en) * | 2007-03-02 | 2010-01-06 | 密克罗奇普技术公司 | Detecting connection to a USB host or hub without using an extra status input |
| CN103793065A (en) * | 2012-10-31 | 2014-05-14 | 鸿富锦精密工业（深圳）有限公司 | Keyboard |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100241889A1 (en) * | 2009-03-18 | 2010-09-23 | Fu Mark Y | Power management system and method |
-
2014
- 2014-10-31 CN CN201410605116.8A patent/CN104461992B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1578941A (en) * | 2001-01-18 | 2005-02-09 | 国际商业机器公司 | Power managing in a system having internal USB hub |
| CN101622612A (en) * | 2007-03-02 | 2010-01-06 | 密克罗奇普技术公司 | Detecting connection to a USB host or hub without using an extra status input |
| CN103793065A (en) * | 2012-10-31 | 2014-05-14 | 鸿富锦精密工业（深圳）有限公司 | Keyboard |
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