CN102033590B - Method, device and data processing equipment for supplying power to communication interface - Google Patents
Method, device and data processing equipment for supplying power to communication interface Download PDFInfo
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- CN102033590B CN102033590B CN200910093678.8A CN200910093678A CN102033590B CN 102033590 B CN102033590 B CN 102033590B CN 200910093678 A CN200910093678 A CN 200910093678A CN 102033590 B CN102033590 B CN 102033590B
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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
Abstract
The invention provides a method, a device and data processing equipment for supplying power to communication interface. The method comprises: detecting the connection of peripheral equipment on a communication interface; acquiring the type of the peripheral equipment; acquiring first power supply information corresponding to the type of the peripheral equipment; and supplying power to the communication interface according to the first power supply information. In the invention, the power consumption of the peripheral equipment can be managed reasonably.
Description
Technical field
The present invention relates to circuit control field, relate in particular to a kind of method that communication interface is powered, device and data processing equipment.
Background technology
Along with communication interface technology is ripe day by day, popularity is more and more higher, the peripherals of the communication interface of usage data treatment facility is also increasing, comprising a lot of very large peripherals of power consumption, as be the equipment such as mobile device (mobile phone, mp4, PSP) charging, USB desk lamp, USB fan, cup heating mat and the heated gloves using when weather is cooler and cooling cushion.
Data processing equipment reads the information of peripherals by the pin (pin) of communication interface; Such as USB interface has four pin: power supply (POWER), GND, DATA+, DATA-; General USB memory device all uses above four pin, and south bridge reads the information of USB device by these two DATA lines.But mentioned abovely as USB electric light, fan, well heater etc., only use two pin of power supply and GND, south bridge now and do not know be what equipment in electricity consumption, and the power consumption of most of this type of USB device is all larger.Equally, data processing equipment, for the peripherals connecting by communication interfaces such as serial ports, HDMI interfaces, also can read by the pin of communication interface the information of peripherals.
The present inventor, in the process that realizes the embodiment of the present invention, finds that prior art at least exists following problem:
The electric weight that can not supply with peripherals by communication interface to data processing equipments such as computers at present manages and controls; In the comparatively nervous occasion of some electric weight, while being powered by battery such as notebook computer, this management and control will seem particularly important.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method that communication interface is powered, device and data processing equipment, can control the power supply to peripherals.
In order to address the above problem, the invention provides a kind of method that communication interface is powered, comprising:
Detect and on communication interface, access a peripherals;
Obtain the type of described peripherals;
Obtain the first power supply information corresponding with the type of described peripherals;
According to described the first power supply information, described communication interface is powered.
Further, in the step of the type of the described peripherals of described acquisition, if judge that described peripherals is the equipment with data transmission capabilities, after described step of described communication interface being powered according to described the first power supply information, also comprise:
Obtain the duty of described peripherals;
According to described duty, obtain the second power supply information of the type peripherals corresponding with described duty;
According to described the second power supply information, described communication interface is powered.
Further, described the first/the second power supply information comprises supply current threshold value and way to manage;
Described step of described communication interface being powered according to described the first/the second power supply information specifically comprises:
According to described the first/the second power supply information, set the supply current threshold value of described communication interface;
Monitor the electric current on described communication interface, if be greater than the described supply current threshold value of this communication interface, according to described way to manage, process;
Described way to manage comprise following any or appoint several:
Allow use, warning, current limliting and forbid;
If way to manage is warning, by user, is allowing use, current limliting and forbidding these three kinds of modes or wherein in part mode, select a kind of mode; Or after warning, acquiescence adopts permission use, current limliting and forbids the one in these three kinds of modes;
If way to manage is used for allowing, do not limit the electric current on described communication interface;
If way to manage is current limliting, supply with the electric current that described communication interface is less than or equal to described supply current threshold value;
If way to manage, for forbidding, is not given described communication interface power supply.
Further, when a described communication interface accesses multiple peripherals by breakout box:
The step of the type of the described peripherals of described acquisition is: the type that obtains each peripherals of this breakout box access;
Described acquisition first step of powering information corresponding with the type of described peripherals is: according to the type of the each peripherals reading, obtain respectively the first power supply information that described each peripherals is corresponding;
Described step of described communication interface being powered according to described the first power supply information specifically comprises:
The supply current threshold value of setting the communication interface of connection adapter is the summation of each supply current threshold value in the first power supply information that each peripherals of described breakout box access is corresponding; Setting way to manage is an acquiescence mode, or be the highest mode of way to manage medium priority in the first power supply information that each peripherals of accessing of described breakout box is corresponding.
The present invention also provides a kind of data processing equipment, it is characterized in that, comprising:
Communication interface, for accessing peripherals;
South Bridge chip, for when the type that reads described peripherals while accessing a peripherals on communication interface being detected;
Central processing unit, for obtaining the first power supply information corresponding with the type of described peripherals;
Communication interface control chip, for according to described the first power supply information, powers to described communication interface.
Further, described South Bridge chip also, for being while having the equipment of data transmission capabilities when described peripherals, reads the duty of this peripherals;
Described central processing unit also, for according to described duty, obtains the second power supply information of the type peripherals corresponding with described duty, and sends to described communication interface control chip;
Described communication interface control chip also, for receiving after described the second power supply information, changes into according to described the second power supply information described communication interface is powered.
Further, described the first/the second power supply information that described central processing unit obtains comprises supply current threshold value and way to manage;
Described communication interface control chip specifically comprises:
Setting unit, for according to described the first/the second power supply information, sets the supply current threshold value of described communication interface;
Monitor unit, for monitoring the electric current on described communication interface, if be greater than the described supply current threshold value of this communication interface, sends work order;
Processing unit, for processing according to the described way to manage of described the first/the second power supply information when receiving described work order.
Further, described processing unit comprises:
Control subelement;
Also comprise in following subelement any or appoint several:
Allow subelement, warning subelement, current limliting subelement and forbid subelement;
Described control subelement starts a corresponding subelement according to described way to manage;
Described warning subelement is used for pointing out user allowing use, current limliting and forbidding these three kinds of modes or wherein in part mode, select a kind of mode, and select to start corresponding subelement according to user; Or after warning, start one that described permission subelement, current limliting subelement and forbidding given tacit consent in subelement;
Described permission subelement is for give described communication interface power supply always;
Described current limliting subelement is for supplying with the electric current that described communication interface is less than or equal to described supply current threshold value;
Describedly forbid that subelement is for stopping to the power supply of described communication interface.
Further, described communication interface is USB interface, and described peripherals is USB device; Described communication interface control chip is USB control chip;
Described current limliting subelement comprises:
Amplifier chip, for the conducting internal resistance both end voltage sampling to precision resistance in USB interface or switching tube, output current value;
Comparer, for by the supply current threshold value comparison receiving on received current value and another input end, if be greater than, output " 0 ", if be less than or equal to, output " 1 ";
With door, for the output signal of power supply enable signal and described comparer is carried out and computing, Output rusults is given the Enable Pin of described USB control chip;
Described USB control chip for stopping to described USB interface power supply when receiving " 0 "; While receiving " 1 ", described USB interface is powered.
Further, described South Bridge chip also, for when detecting that described communication interface connection accesses multiple peripherals by breakout box, reads the type of each peripherals of this breakout box access;
Described central processing unit finds respectively according to the type of the each peripherals reading the first power supply information that described each peripherals is corresponding;
Described communication interface control chip is powered and is specifically referred to the communication interface of connection adapter according to described the first power supply information:
The supply current threshold value of the communication interface of described communication interface control chip setting connection adapter is the summation of each supply current threshold value in the first power supply information that each peripherals of described breakout box access is corresponding; Setting way to manage is an acquiescence mode, or be the highest mode of way to manage medium priority in the first power supply information that each peripherals of accessing of described breakout box is corresponding.
One embodiment of the present of invention at least possess following advantage: power consumption that can reasonable management peripherals; If adopt this embodiment when powered battery, can guarantee the power-on time of battery; Effectively regulating cell the power consumption in the course of discharge, extends battery.Power supply be managed and be controlled to one embodiment of the present of invention can also according to duty, more flexible.
Accompanying drawing explanation
Fig. 1 is the concrete implementing procedure schematic diagram of the method that communication interface is powered of embodiment mono-;
Fig. 2 is the concrete enforcement schematic block diagram of the device that communication interface is powered of embodiment bis-;
Fig. 3 is the circuit diagram of the device that communication interface is powered of embodiment bis-current limliting subelement while specifically implementing;
Fig. 4 is the concrete enforcement schematic block diagram of the data processing equipment of embodiment tri-.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described in detail.
Embodiment mono-, a kind of method that communication interface is powered, comprising:
Detect and on communication interface, access a peripherals;
Obtain the type of described peripherals;
Obtain the first power supply information corresponding with the type of described peripherals;
According to described the first power supply information, described communication interface is powered.
In the present embodiment, if while existing multiple communication interfaces to have access to peripherals, according to the first power supply information corresponding to type of each peripherals of access, corresponding communication interface is powered respectively.
In the present embodiment, can be, but not limited to is when battery-powered, carries out the method that the present embodiment provides, thereby improves the power-on time of the battery of the data processing equipments such as notebook; Certainly, in the situation that not being battery-powered, also can use the method with economize on electricity.
In the present embodiment, for the peripherals with data transmission capabilities, can read by data line the product information of this peripherals, comprise the information such as producer, device type, rated capacity, rated disspation, rated speed, thereby can judge the type of this peripherals, can judge and comprise the fan constant power consumer device of reading less than data; Such as the DATA-by USB interface and DATA+ two signal line read the product information of USB device; And for the equipment without data transmission capabilities, such as only having used the power pin of communication interface and the USB power device of GND pin, owing to reading its product information with data line, therefore can set it as a type.
In an embodiment of the present embodiment, in the step of the type of the described peripherals of described acquisition, if judge that described peripherals is the equipment with data transmission capabilities, after described step of described communication interface being powered according to described the first power supply information, also comprise:
Obtain the duty of described peripherals;
According to described duty, obtain the second power supply information of the type peripherals corresponding with described duty;
According to described the second power supply information, described communication interface is powered.
The operations such as the read-write of peripherals are carried out under system control, can be by states such as idle, the Read & Write of system monitoring equipment; Such as under Windows system, just can remove to check by the management tool in control panel the state of peripherals, to obtain the duty of peripherals.
In the present embodiment, in the time of can also working as the curent change monitoring on described communication interface, again obtain the type (also may further comprise duty) of the peripherals accessing on described communication interface, according to described type, regain described the first power supply information (if there is duty, obtaining the second power supply information), thereby described communication interface is powered; When peripherals is changed or duty changes, can adjust at any time the control strategy to power supply like this.
In the present embodiment, communication interface can have the first power supply information of acquiescence when unloaded, can directly be defaulted as and not power.
In an embodiment of the present embodiment, described acquisition first step of powering information corresponding with the type of described peripherals specifically can comprise:
Preserve under powered battery state, during different powering mode, the first power supply information that dissimilar peripherals is corresponding;
According to the type of current powering mode and described peripherals, obtain the first corresponding power supply information.
In the present embodiment, described the first/the second power supply information can be, but not limited to comprise supply current threshold value and/or way to manage.
In the present embodiment, if judge that described peripherals is the equipment with data transmission capabilities while obtaining the type of described peripherals, in the step of described acquisition the first/the second power supply information corresponding with the type/duty of described peripherals:
Can first read rated disspation or the rated current (if rated disspation calculates rated current) of described peripherals, the supply current threshold value using rated current as this peripherals; Also the corresponding supply current threshold value of type/duty that can preserve different peripherals, finds corresponding supply current threshold value according to the type/duty of described peripherals;
For the equipment with data transmission capabilities, way to manage can be given tacit consent to, also can be to eject dialog box to be selected by user, way to manage corresponding to type/duty that can also preserve peripherals, finds corresponding way to manage according to the type/duty of described peripherals.
If judge that described peripherals is the equipment without data transmission capabilities while obtaining the type of described peripherals, in the step of described acquisition the first power supply information corresponding with the type of described peripherals:
Can adopt the supply current threshold value of a default value as this peripherals; Way to manage can be given tacit consent to, such as directly adopting warning or current limliting; Also can be to eject dialog box to be selected by user.
Also can be while preserving corresponding the first power supply information of dissimilar peripherals, using the equipment without data transmission capabilities as a type, preserve the first power supply information corresponding to the type peripherals, when judging that described peripherals is while not having the equipment of data transmission capabilities, finds out the first power supply information of the type peripherals.
Described step of described communication interface being powered according to described the first/the second power supply information specifically comprises:
According to described the first/the second power supply information, set the supply current threshold value of described communication interface;
Monitor the electric current on described communication interface, if be greater than the described supply current threshold value of this communication interface, according to described way to manage, process;
In the present embodiment, described way to manage include but not limited to following any or appoint several:
Allow to use (Permit), warning (Warn), current limliting (Limit) and forbid (Forbidden).
In the present embodiment, if way to manage is warning, can allowing use, current limliting and forbid these three kinds of modes or wherein in part mode, select a kind of mode by user; Also can be that after warning, acquiescence adopts permission use, current limliting and forbids the one in these three kinds of modes;
If way to manage is used for allowing, do not limit the electric current on described communication interface;
If way to manage is current limliting, only supply with the electric current that described communication interface is less than or equal to described supply current threshold value;
If way to manage, for forbidding, is not given described communication interface power supply.
In the present embodiment, when way to manage is current limliting, supplies with the concrete steps that described communication interface is less than or equal to the electric current of described supply current threshold value and comprise:
To the conducting internal resistance both end voltage sampling of precision resistance or switching tube on described communication interface, output current value (voltage available value representation size of current); By this current value and the comparison of described supply current threshold value, if be greater than described supply current threshold value, turn-off described switching tube to stop to described communication interface power supply; If be less than or equal to described supply current threshold value, described communication interface powered.
In the present embodiment, if preserve in advance described supply current threshold value, described supply current threshold value can be determined according to the actual power consumption amount of all types of peripherals of actual measurement, and the supply current threshold value corresponding to peripherals of arbitrary type should be more than or equal to the actual power consumption amount of the type peripherals; When the peripherals of a type has multiple duty, supply current threshold value corresponding under the each duty of the type peripherals should be more than or equal to the actual power consumption amount under this duty of the type peripherals; Described way to manage corresponding to all types of peripherals can be according to actual needs or situation definition.
In an embodiment of the present embodiment, described communication interface is USB interface, and described peripherals is USB device; In other embodiment, described communication interface can be also serial ports, HDMI interface etc.; Described peripherals is the equipment that uses corresponding communication interface.
In this embodiment, can read by two DATA pins USB device and the duty of access; Can be, but not limited to be read by South Bridge chip.
In the present embodiment, when a described communication interface accesses multiple peripherals by breakout box, the type step of the described peripherals of described acquisition is: the type that obtains each peripherals of this breakout box access;
Described acquisition first step of powering information corresponding with the type of described peripherals is: according to the type of the described each peripherals obtaining, obtain respectively the first power supply information that described each peripherals is corresponding;
The step of described communication interface being powered according to described the first power supply information specifically comprises:
The supply current threshold value of communication interface of setting connection adapter is: the summation of each supply current threshold value in the first power supply information corresponding to each peripherals of described breakout box access; Setting way to manage is an acquiescence mode, or be the highest mode of way to manage medium priority in the first power supply information that each peripherals of accessing of described breakout box is corresponding; The priority of each way to manage can be set according to actual needs, in order to save power consumption, can current limliting or the priority of forbidding mode be set to the highlyest, when breakout box accesses unknown peripherals, be unlikely to consume too many electric energy like this.
If when each peripherals of described breakout box access comprises the equipment with data transmission capabilities, described method also comprises: obtain in each peripherals of described breakout box access, respectively there is the duty of the equipment of data transmission capabilities; According to described duty, obtain the second power supply information of the type peripherals corresponding with described duty; Upgrade the supply current threshold value of the communication interface of connection adapter: use the supply current threshold value in obtained each the second power supply information to substitute the supply current threshold value in corresponding the first power supply information, calculate the summation of described each supply current threshold value; If way to manage is not acquiescence mode, upgrade way to manage, determine the highest way to manage of priority in each the second power supply information of obtaining, the way to manage after renewal using this way to manage and higher one of original way to manage medium priority of setting.
With an object lesson, be further described below, this example is the process of in a notebook computer, USB interface being powered, and as shown in Figure 1, comprising:
Determine all kinds of USB device power consumptions, set respectively supply current threshold value and the way to manage of all kinds of USB device, and save as the first power supply information of respective type USB device, and set and preserve the second power supply information of each duty of the USB device with data transmission capabilities;
Detect the power supply mode of notebook computer, adapter power supply mode if, reads respectively the USB device information of each USB interface access, monitors the power consumption of each USB interface, uses the USB device accessing;
Powered battery mode if, reads respectively the USB device information of each USB interface; In this example, be the USB device information that reads respectively first, second, and third USB interface, monitor the power consumption of each USB interface; Wherein, the USB device that described first, second, and third USB interface accesses corresponds respectively to power supply information A, B, C; According to described power supply information A, B, C, described first, second, and third USB interface is powered respectively.
Embodiment bis-, a kind of device that communication interface is powered, as shown in Figure 2, comprising:
Read module, for when the type that obtains described peripherals while accessing a peripherals on communication interface being detected;
Acquisition module, for obtaining the first power supply information corresponding with the type of described peripherals;
Supply module, for according to described the first power supply information, powers to described communication interface.
In the present embodiment, if while existing multiple communication interfaces to have access to peripherals, described read module reads respectively the type of each peripherals of access; Described acquisition module obtains the first corresponding power supply information according to the type of each peripherals of access respectively, and described supply module is powered to corresponding communication interface according to the first different power supply information respectively.
In the present embodiment, it is when powered battery that described acquisition module can be, but not limited to, and just goes to obtain the first power supply information corresponding with the type of described peripherals, thereby improves the power-on time of the battery of the data processing equipments such as notebook.Certainly, in the situation that not being battery-powered, described acquisition module also can go to obtain the first power supply information corresponding with the type of described peripherals, and then supply module is powered according to this first power supply information, to reach the effect of economize on electricity.
In the present embodiment, for the peripherals with data transmission capabilities, described read module can read by data line the product information of this peripherals, comprise the information such as producer, device type, rated capacity, rated disspation, rated speed, thereby can judge the type of this peripherals, can judge and comprise the fan constant power consumer device of reading less than data; Such as the DATA-by USB interface and DATA+ two signal line read the product information of USB device; And for the equipment without data transmission capabilities, such as only having used the power pin of communication interface and the USB power device of GND pin, owing to reading its product information with data line, therefore can set it as a type.
In an embodiment of the present embodiment, described read module also, for being while having the equipment of data transmission capabilities when described peripherals, reads the duty of this peripherals;
Described acquisition module also, for according to described duty, obtains the second power supply information of the type peripherals corresponding with described duty, and sends to described communication interface control chip;
Described supply module also, for receiving after described the second power supply information, changes into according to described the second power supply information described communication interface is powered.
The operations such as the read-write of peripherals are carried out under system control, the state such as idle, Read & Write that system can monitoring equipment; Such as under Windows system, described read module can remove to check by the management tool in control panel the state of peripherals, to obtain the duty of peripherals.
In the present embodiment, when can also working as the curent change monitoring on described communication interface, again obtains described read module the type (also may further comprise duty) of the peripherals accessing on described communication interface, described acquisition module regains corresponding the first power supply information (if there is duty, obtaining the second power supply information) according to described type, thereby described communication interface is powered; When peripherals is changed or duty changes, can adjust at any time the control strategy to power supply like this.
In the present embodiment, communication interface can have the first power supply information of acquiescence when unloaded, can directly be defaulted as and not power.
In an embodiment of the present embodiment, described acquisition module obtains the first power supply information corresponding with the type of described peripherals and specifically refers to: described acquisition module obtains current powering mode, according to the type of current powering mode and described peripherals that described read module obtains, obtain the first power supply information of the type peripherals.
In the present embodiment, described the first/the second power supply information that described acquisition module obtains comprises supply current threshold value and/or way to manage;
In the present embodiment, if described read module judges that described peripherals is the equipment with data transmission capabilities while obtaining the type of described peripherals, described acquisition module obtains the first/the second power supply information corresponding with the type/duty of described peripherals and refers to:
Rated disspation or the rated current (if rated disspation calculates rated current) of the described peripherals that acquisition read module reads, the supply current threshold value using rated current as this peripherals; Or in described device, also comprise a memory module, for the corresponding supply current threshold value of type/duty of preserving peripherals, described acquisition module finds corresponding supply current threshold value in described memory module according to the type/duty of described peripherals;
For the equipment with data transmission capabilities, way to manage can be given tacit consent to, also can be to eject dialog box to be selected by user, way to manage corresponding to type/duty that can also be preserved by described memory module peripherals, described acquisition module finds corresponding way to manage in described memory module according to the type/duty of described peripherals.
If described read module judges that described peripherals is the equipment without data transmission capabilities while obtaining the type of described peripherals, described acquisition module obtains the first power supply information corresponding with the type of described peripherals and refers to:
Described acquisition module can adopt the supply current threshold value of a default value as this peripherals; Way to manage can be given tacit consent to, such as directly adopting warning or current limliting; Also can be to eject dialog box to be selected by user.
Also can be in the corresponding first power supply information of dissimilar peripherals of preserving in described memory module, using the equipment without data transmission capabilities as a type, preserve the first power supply information corresponding to the type peripherals, when judging that described peripherals is while not having the equipment of data transmission capabilities, described acquisition module finds out the first power supply information of the type peripherals in described storer.
Described supply module specifically comprises:
Setting unit, for according to described the first/the second power supply information, sets the supply current threshold value of described communication interface;
Monitor unit, for monitoring the electric current on described communication interface, if be greater than the described supply current threshold value of this communication interface, sends work order;
Processing unit, for processing according to the described way to manage of described the first/the second power supply information when receiving described work order.
In the present embodiment, described processing unit comprises control subelement, also include but not limited in following subelement any or appoint several:
Allow subelement, warning subelement, current limliting subelement and forbid subelement.
In the present embodiment, described control subelement starts a corresponding subelement according to described way to manage;
When described way to manage is warning, described control subelement starts described warning subelement; Described warning subelement is used for ejecting dialog box, and prompting user is allowing use, current limliting and forbidding these three kinds of modes or wherein in part mode, select a kind of mode, and select to start corresponding subelement according to user; Or for of warning the described permission subelement of rear startup, current limliting subelement and forbidding that subelement is given tacit consent to.
When described way to manage is used for permission, described control subelement starts described permission subelement; Described permission subelement is for give described communication interface power supply always;
When described way to manage is current limliting, described control subelement starts described current limliting subelement; Described current limliting subelement is for supplying with the electric current that described communication interface is less than or equal to described supply current threshold value;
Described way to manage when forbidding, is forbidden subelement described in described control subelement starts; Describedly forbid that subelement is for stopping to the power supply of described communication interface.
In the present embodiment, if preserve in advance described supply current threshold value, described supply current threshold value can be determined according to the actual power consumption amount of all types of peripherals of actual measurement, and the supply current threshold value corresponding to peripherals of arbitrary type should be more than or equal to the actual power consumption amount of the type peripherals; When the peripherals of a type has multiple duty, supply current threshold value corresponding under the each duty of the type peripherals should be more than or equal to the actual power consumption amount under this duty of the type peripherals; Described way to manage corresponding to all types of peripherals can be according to actual needs or situation definition.
In the present embodiment, when a described communication interface accesses multiple peripherals by breakout box, described read module reads the type of each peripherals of this breakout box access; Described acquisition module finds respectively the first corresponding power supply information according to the type of the each peripherals reading; Now, described supply module is powered to the communication interface of connection adapter according to described the first power supply information, specifically comprises:
The supply current threshold value that described supply module is set the communication interface of connection adapter is: the summation of each supply current threshold value in the first power supply information corresponding to each peripherals of described breakout box access; Setting way to manage is an acquiescence mode, or in the first power supply information corresponding to each peripherals of described USB breakout box access, way to manage medium priority is the highest; The priority of each way to manage can be set according to actual needs, in order to save power consumption, can current limliting or the priority of forbidding mode be set to the highlyest, when breakout box accesses unknown peripherals, be unlikely to consume too many electric energy like this.
If when each peripherals of described breakout box access comprises the equipment with data transmission capabilities, described read module, also for obtaining each peripherals of described breakout box access, respectively has the duty of the equipment of data transmission capabilities; Described acquisition module is also for obtaining the second power supply information of the type peripherals corresponding with described duty according to described duty, and upgrade the supply current threshold value of the communication interface of connection adapter: use the supply current threshold value in obtained each the second power supply information to substitute the supply current threshold value in corresponding the first power supply information, calculate the summation of described each supply current threshold value; If way to manage is not acquiescence mode, described acquisition module also upgrades way to manage, determine the highest way to manage of priority in each the second power supply information of obtaining, the way to manage after renewal using this way to manage and higher one of original way to manage medium priority of setting.
In an embodiment of the present embodiment, described communication interface is USB interface, and described peripherals is USB device; In other embodiment, described communication interface can be also serial ports, HDMI interface etc.; Described peripherals is the equipment that uses corresponding communication interface.
In this embodiment, described read module can read by two DATA pins USB device and the duty of access; Described read module can be, but not limited to as South Bridge chip.
In this embodiment, described supply module can be USB control chip, and described current limliting subelement can be as shown in Figure 3; Fig. 3 comprises two kinds of USB control chips, and a kind of USB control chip 4 connects a USB interface 6, and this USB control chip connects a current limliting subelement 3; Another kind of USB control chip 5 connects two USB interface 7 and 8, and this USB control chip connects current limliting subelement 1 and current limliting subelement 2.
Each described current limliting subelement 1,2,3 comprises respectively amplifier chip 11,21,31; The comparer 12,22,32 that one of input end is connected with described amplifier chip 11,21,31 respectively; And one of input end be connected with described comparer 12,22,32 output terminals with door 13,23,33; Wherein amplifier chip and comparer can share with monitor unit.
Each described amplifier chip 11,21,31 is respectively used to the conducting internal resistance both end voltage sampling to precision resistance in USB interface or switching tube, and output current value (voltage available value representation size of current) is given the described comparer being connected; In Fig. 3, three amplifier chips 11,21,31 are exported respectively the current value in USB interface 6,7,8.
Each described comparer 12,22,32 is respectively used to the supply current threshold value comparison receiving on received current value and another input end, if be greater than, connected described and door 13,23,33 is given in output " 0 ", if be less than or equal to, described and door 13,23,33 is given in output " 1 "; In Fig. 3, three comparers are respectively by the current value in described different USB interface and the first supply current threshold value Ilim1, the second supply current threshold value Ilim2 and the 3rd supply current threshold value Ilim3 comparison.
Each described and door 13,23,33 are respectively used to the output signal of received power supply enable signal and the comparer that is connected to carry out and computing, and Output rusults is to the Enable Pin of described USB control chip; In Fig. 3, three is respectively that the first power supply enable signal EN1, the second power supply enable signal EN2 and the 3rd power supply enable signal EN3 are carried out and computing with the output signal of be connected comparer with door 13,23,33; Each power supply enable signal can be produced by data processing equipment.
Described USB control chip for stopping to the corresponding USB interface power supply connecting when receiving " 0 "; While receiving " 1 ", the corresponding USB interface connecting is powered.
Can find out, in this embodiment, when the current value in USB interface is greater than described supply current threshold value, corresponding comparer will be exported " 0 ", corresponding and door with operation result will be " 0 ", do not enable described USB control chip, therefore will stop powering to described USB interface; When the current value in USB interface is less than or equal to described supply current threshold value, corresponding comparer will export " 1 ", when power supply enable signal be " 1 ", accordingly and with operation result will be " 0 ", enable described USB control chip, will power to described USB interface.
During practical application, can to foregoing circuit, be out of shape according to following thinking:
Relatively size of current and the supply current threshold value in USB interface, stops power supply when exceeding this supply current threshold value, and powers when being less than or equal to this supply current threshold value.
With an object lesson, be further described below, this example is the device of described in the present embodiment, communication interface being powered carries out power supply management process to the USB interface in a notebook computer, after working with notebook computer is under powered battery state, described read module reads the USB device information accessing in each USB interface, comprise USB device type and duty thereof, as follows respectively:
What the first USB interface accessed is 80G portable hard drive, under read and write state (maximum current 400mA);
What secondary USB interface accessed is 80G portable hard drive, under standby state (maximum current 60mA);
What the 3rd USB interface accessed is not connect USB device (zero load);
That the 4th USB interface accesses is USB port heated gloves (maximum current 600mA).
Described acquisition module, according to the data of preserving in memory module described in above information searching, obtains: the supply current threshold value of the first USB interface is 420mA; The supply current threshold value of secondary USB interface is 80mA; The supply current threshold value 10mA (or 0mA) of the 3rd USB interface; The supply current threshold value 10mA (or 0mA) of the 4th USB interface.
Described supply module limits the first USB interface output current to 420mA; Limit secondary USB interface output current to 80mA; Limit the 3rd USB interface output current to 10mA (or 0mA); Limit the 4th USB interface output current to 10mA (or 0mA).
The information of reading less than equipment from port 3,4 by I2C BUS due to south bridge, (4 port devices have just been used power pin and the GND pin of USB interface, just USB power apparatus), so system acting is warning current limit (whether user can select to allow to use).And the electric current that 1,2 ports are limited to is exactly the electric current of equipment when work maximum, so the equipment that can guarantee is normally worked.
It should be noted that the data of system fetch equipment are adjusted current limit value is corresponding when port one is by transfer multiple USB port while connecing multiple USB device of breakout box.When wherein just having used the power pin of USB interface and the USB power device of GND pin, when load exceedes system specialization value, as port 4, whether system gives a warning and notifies user, current limit or selected to allow to use by user.
Because described read module is read information less than USB device by I2C BUS from the 4th USB interface, (USB device of the 4th USB interface access has just been used power pin and the GND pin of USB interface, just USB power apparatus), so set it as unrecognizable USB device, corresponding way to manage is warning current limit (or being selected whether to allow to use by user).And the electric current that first and second USB interface is limited to is exactly the electric current of USB device when work maximum of access, so the equipment that can guarantee is normally worked.When working with notebook computer is under battery powered mode, can pass through the power supply management to USB device like this, reduce system power dissipation, guarantee service time of battery.
Embodiment tri-, a kind of data processing equipment, as shown in Figure 4, comprising:
Communication interface, for accessing peripherals;
South Bridge chip, for when the type that reads described peripherals while accessing a peripherals on communication interface being detected;
Central processing unit, for obtaining the first power supply information corresponding with the type of described peripherals;
Communication interface control chip, for according to described the first power supply information, powers to described communication interface.
In the present embodiment, if while existing multiple communication interfaces to have access to peripherals, described South Bridge chip reads respectively the type of each peripherals of access; Described central processing unit obtains the first corresponding power supply information according to the type of each peripherals of access respectively, and described communication interface control chip is powered to corresponding communication interface according to the first different power supply information respectively.
In the present embodiment, it is when powered battery that described central processing unit can be, but not limited to, and just goes to obtain the first power supply information corresponding with the type of described peripherals, thereby improves the power-on time of the battery of the data processing equipments such as notebook.Certainly, in the situation that not being battery-powered, described central processing unit also can go to obtain the first power supply information corresponding with the type of described peripherals, and then communication interface control chip is powered according to this first power supply information, to reach the effect of economize on electricity.
In the present embodiment, for the peripherals with data transmission capabilities, described South Bridge chip can read by data line the product information of this peripherals, comprise the information such as producer, device type, rated capacity, rated disspation, rated speed, thereby can judge the type of this peripherals, can judge and comprise the fan constant power consumer device of reading less than data; Such as the DATA-by USB interface and DATA+ two signal line read the product information of USB device; And for the equipment without data transmission capabilities, such as only having used the power pin of communication interface and the USB power device of GND pin, owing to reading its product information with data line, therefore can set it as a type.
In an embodiment of the present embodiment, described South Bridge chip also, for being while having the equipment of data transmission capabilities when described peripherals, reads the duty of this peripherals;
Described central processing unit also, for according to described duty, obtains the second power supply information of the type peripherals corresponding with described duty, and sends to described communication interface control chip;
Described communication interface control chip also, for receiving after described the second power supply information, changes into according to described the second power supply information described communication interface is powered.
The operations such as the read-write of peripherals are carried out under system control, the state such as idle, Read & Write that central processing unit can monitoring equipment; Such as under Windows system, just can remove to check by the management tool in control panel the state of peripherals, to obtain the duty of peripherals.
In the present embodiment, described South Bridge chip and described central processing unit obtain the type (also may further comprise duty) of the peripherals accessing on described communication interface again in the time of can also working as the curent change monitoring on described communication interface, described central processing unit regains corresponding the first power supply information (if there is duty, obtaining the second power supply information) according to described type, thereby described communication interface is powered; When peripherals is changed or duty changes, can adjust at any time the control strategy to power supply like this.
In the present embodiment, communication interface can have the first power supply information of acquiescence when unloaded, can directly be defaulted as and not power.
In an embodiment of the present embodiment, described central processing unit obtains the first power supply information corresponding with the type of described peripherals and specifically refers to: described central processing unit obtains current powering mode, the type of the described peripherals reading according to current powering mode and described South Bridge chip, obtains the first power supply information of the type peripherals.
In the present embodiment, described the first/the second power supply information that described central processing unit obtains comprises supply current threshold value and/or way to manage.
In the present embodiment, if described South Bridge chip judges that described peripherals is the equipment with data transmission capabilities while obtaining the type of described peripherals, described central processing unit obtains the first/the second power supply information corresponding with the type/duty of described peripherals and refers to:
Rated disspation or the rated current (if rated disspation calculates rated current) of the described peripherals that acquisition South Bridge chip reads, the supply current threshold value using rated current as this peripherals; Or the corresponding supply current threshold value of type/duty of the storer preservation peripherals being comprised by described data processing equipment, described central processing unit finds corresponding supply current threshold value in described storer according to the type/duty of described peripherals;
For the equipment with data transmission capabilities, way to manage can be given tacit consent to, also can be to eject dialog box to be selected by user, way to manage corresponding to type/duty that can also be preserved by described storer peripherals, described central processing unit finds corresponding way to manage in described storer according to the type/duty of described peripherals.
If described South Bridge chip judges that described peripherals is the equipment without data transmission capabilities while obtaining the type of described peripherals, described central processing unit obtains the first power supply information corresponding with the type of described peripherals and refers to:
Described central processing unit can adopt the supply current threshold value of a default value as this peripherals; Way to manage can be given tacit consent to, and can be also to eject dialog box to be selected by user.
Also can be in the corresponding first power supply information of dissimilar peripherals of preserving at described storer, using the equipment without data transmission capabilities as a type, preserve the first power supply information corresponding to the type peripherals, when judging that described peripherals is while not having the equipment of data transmission capabilities, described central processing unit finds out the first power supply information of the type peripherals in described storer.
Described communication interface control chip specifically comprises:
Setting unit, for according to described the first/the second power supply information, sets the supply current threshold value of described communication interface;
Monitor unit, for monitoring the electric current on described communication interface, if be greater than the described supply current threshold value of this communication interface, sends work order;
Processing unit, for processing according to the described way to manage of described the first/the second power supply information when receiving described work order.
In the present embodiment, described processing unit comprises control subelement, also include but not limited in following subelement any or appoint several:
Allow subelement, warning subelement, current limliting subelement and forbid subelement.
In the present embodiment, described control subelement starts a corresponding subelement according to described way to manage;
When described way to manage is warning, described control subelement starts described warning subelement; Described warning subelement is used for ejecting dialog box, and prompting user is allowing use, current limliting and forbidding these three kinds of modes or wherein in part mode, select a kind of mode, and select to start corresponding subelement according to user; Or for of warning the described permission subelement of rear startup, current limliting subelement and forbidding that subelement is given tacit consent to.
When described way to manage is used for permission, described control subelement starts described permission subelement; Described permission subelement is for give described communication interface power supply always;
When described way to manage is current limliting, described control subelement starts described current limliting subelement; Described current limliting subelement is for supplying with the electric current that described communication interface is less than or equal to described supply current threshold value;
Described way to manage when forbidding, is forbidden subelement described in described control subelement starts; Describedly forbid that subelement is for stopping to the power supply of described communication interface.
In the present embodiment, if preserve in advance described supply current threshold value, described supply current threshold value can be determined according to the actual power consumption amount of all types of peripherals of actual measurement, and the supply current threshold value corresponding to peripherals of arbitrary type should be more than or equal to the actual power consumption amount of the type peripherals; When the peripherals of a type has multiple duty, supply current threshold value corresponding under the each duty of the type peripherals should be more than or equal to the actual power consumption amount under this duty of the type peripherals; Described way to manage corresponding to all types of peripherals can be according to actual needs or situation definition.
In the present embodiment, when a described communication interface accesses multiple peripherals by breakout box, described South Bridge chip reads the type of each peripherals of this breakout box access; Described central processing unit obtains respectively the first corresponding power supply information according to the type of the each peripherals reading; Now, described communication interface control chip is powered to the communication interface of connection adapter according to these the first power supply information, specifically comprises:
The supply current threshold value that described communication interface control chip is set the communication interface of connection adapter is: the summation of each supply current threshold value in the first power supply information corresponding to each peripherals of described breakout box access; Setting way to manage is an acquiescence mode, or in the first power supply information corresponding to each peripherals of described USB breakout box access, way to manage medium priority is the highest; The priority of each way to manage can be set according to actual needs, in order to save power consumption, can current limliting or the priority of forbidding mode be set to the highlyest, when breakout box accesses unknown peripherals, be unlikely to consume too many electric energy like this.
If when each peripherals of described breakout box access comprises the equipment with data transmission capabilities, described South Bridge chip, also for obtaining each peripherals of described breakout box access, respectively has the duty of the equipment of data transmission capabilities; Described central processing unit is also for obtaining the second power supply information of the type peripherals corresponding with described duty according to described duty, and upgrade the supply current threshold value of the communication interface of connection adapter: use the supply current threshold value in obtained each the second power supply information to substitute the supply current threshold value in corresponding the first power supply information, calculate the summation of described each supply current threshold value; If way to manage is not acquiescence mode, described central processing unit also upgrades way to manage, determine the highest way to manage of priority in each the second power supply information of obtaining, the way to manage after renewal using this way to manage and higher one of original way to manage medium priority of setting.
In an embodiment of the present embodiment, described communication interface is USB interface, and described peripherals is USB device, and described communication interface control chip is USB control chip; In other embodiment, described communication interface can be also serial ports, HDMI interface etc.; Described peripherals is the equipment that uses corresponding communication interface.
In this embodiment, described South Bridge chip can read by two DATA pins USB device and the duty of access.
In this embodiment, what described current limliting subelement can be with embodiment bis-is identical; Described central processing unit can also be used for producing described power supply enable signal by existing mode.
Certainly; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of claim of the present invention.
Claims (10)
1. a method of communication interface being powered, comprising:
Detect and on communication interface, access a peripherals;
When a described communication interface accesses multiple peripherals by breakout box, obtain the type of each peripherals of this breakout box access;
According to the type of the each peripherals reading, obtain respectively the first power supply information that described each peripherals is corresponding;
The supply current threshold value of setting the communication interface of connection adapter is the summation of each supply current threshold value in the first power supply information that each peripherals of described breakout box access is corresponding.
2. the method for claim 1, it is characterized in that, in the step of the type of the described peripherals of described acquisition, if judge that described peripherals is the equipment with data transmission capabilities, after described step of described communication interface being powered according to described the first power supply information, also comprise:
Obtain the duty of described peripherals;
According to described duty, obtain the second power supply information of the type peripherals corresponding with described duty;
According to described the second power supply information, described communication interface is powered.
3. method as claimed in claim 2, is characterized in that:
Described the first/the second power supply information comprises supply current threshold value and way to manage;
Described step of described communication interface being powered according to described the first/the second power supply information specifically comprises:
According to described the first/the second power supply information, set the supply current threshold value of described communication interface;
Monitor the electric current on described communication interface, if be greater than the described supply current threshold value of this communication interface, according to described way to manage, process;
Described way to manage comprise following any or appoint several:
Allow use, warning, current limliting and forbid;
If way to manage is warning, by user, is allowing use, current limliting and forbidding these three kinds of modes or wherein in part mode, select a kind of mode; Or after warning, acquiescence adopts permission use, current limliting and forbids the one in these three kinds of modes;
If way to manage is used for allowing, do not limit the electric current on described communication interface;
If way to manage is current limliting, supply with the electric current that described communication interface is less than or equal to described supply current threshold value;
If way to manage, for forbidding, is not given described communication interface power supply.
4. method as claimed in claim 3, is characterized in that,
Setting way to manage is an acquiescence mode, or be the highest mode of way to manage medium priority in the first power supply information that each peripherals of accessing of described breakout box is corresponding.
5. a data processing equipment, is characterized in that, comprising:
Communication interface, for accessing peripherals;
South Bridge chip, for when the type that reads described peripherals while accessing a peripherals on communication interface being detected, also, for when detecting that described communication interface connection accesses multiple peripherals by breakout box, read the type of each peripherals of this breakout box access;
Central processing unit, for finding respectively according to the type of the each peripherals reading the first power supply information that described each peripherals is corresponding;
Communication interface control chip, for according to described the first power supply information, described communication interface is powered: the supply current threshold value of setting the communication interface of connection adapter is the summation of each supply current threshold value in the first power supply information that each peripherals of described breakout box access is corresponding.
6. data processing equipment as claimed in claim 5, is characterized in that:
Described South Bridge chip also, for being while having the equipment of data transmission capabilities when described peripherals, reads the duty of this peripherals;
Described central processing unit also, for according to described duty, obtains the second power supply information of the type peripherals corresponding with described duty, and sends to described communication interface control chip;
Described communication interface control chip also, for receiving after described the second power supply information, changes into according to described the second power supply information described communication interface is powered.
7. data processing equipment as claimed in claim 6, is characterized in that:
Described the first/the second power supply information that described central processing unit obtains comprises supply current threshold value and way to manage;
Described communication interface control chip specifically comprises:
Setting unit, for according to described the first/the second power supply information, sets the supply current threshold value of described communication interface;
Monitor unit, for monitoring the electric current on described communication interface, if be greater than the described supply current threshold value of this communication interface, sends work order;
Processing unit, for processing according to the described way to manage of described the first/the second power supply information when receiving described work order.
8. data processing equipment as claimed in claim 7, is characterized in that, described processing unit comprises:
Control subelement;
Also comprise in following subelement any or appoint several:
Allow subelement, warning subelement, current limliting subelement and forbid subelement;
Described control subelement starts a corresponding subelement according to described way to manage;
Described warning subelement is used for pointing out user allowing use, current limliting and forbidding these three kinds of modes or wherein in part mode, select a kind of mode, and select to start corresponding subelement according to user; Or after warning, start one that described permission subelement, current limliting subelement and forbidding given tacit consent in subelement;
Described permission subelement is for give described communication interface power supply always;
Described current limliting subelement is for supplying with the electric current that described communication interface is less than or equal to described supply current threshold value;
Describedly forbid that subelement is for stopping to the power supply of described communication interface.
9. data processing equipment as claimed in claim 8, is characterized in that,
Described communication interface is USB interface, and described peripherals is USB device; Described communication interface control chip is USB control chip;
Described current limliting subelement comprises:
Amplifier chip, for the conducting internal resistance both end voltage sampling to precision resistance in USB interface or switching tube, output current value;
Comparer, for by the supply current threshold value comparison receiving on received current value and another input end, if be greater than, output " 0 ", if be less than or equal to, output " 1 ";
With door, for the output signal of power supply enable signal and described comparer is carried out and computing, Output rusults is given the Enable Pin of described USB control chip;
Described USB control chip for stopping to described USB interface power supply when receiving " 0 "; While receiving " 1 ", described USB interface is powered.
10. the data processing equipment as described in claim 5 or 6, is characterized in that:
Setting way to manage is an acquiescence mode, or be the highest mode of way to manage medium priority in the first power supply information that each peripherals of accessing of described breakout box is corresponding.
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| CN102749980B (en) * | 2012-05-25 | 2016-12-14 | 深圳Tcl新技术有限公司 | It is the method and system of external USB equipment charge when USB main equipment is standby |
| CN103914120A (en) * | 2012-12-30 | 2014-07-09 | 航天信息股份有限公司 | Power management method and power management system for external module of hand-held device |
| CN103970246B (en) * | 2013-02-06 | 2016-12-28 | 联发科技（新加坡）私人有限公司 | Electric power controller and method for managing power supply |
| CN104345859B (en) * | 2013-07-29 | 2017-09-01 | 联想(北京)有限公司 | The method and power supply unit of a kind of power supply and the method and electronic equipment of a kind of charging |
| CN104460652B (en) * | 2014-10-27 | 2018-02-23 | 上海原动力通信科技有限公司 | The application method of board aging equipment and board aging equipment |
| CN105630124A (en) * | 2014-12-01 | 2016-06-01 | 鸿富锦精密工业(武汉)有限公司 | Electronic equipment interface switching device |
| CN106325453A (en) * | 2015-07-09 | 2017-01-11 | 中兴通讯股份有限公司 | Configuration method of output current and terminal |
| CN107608494A (en) * | 2017-09-30 | 2018-01-19 | 郑州云海信息技术有限公司 | A kind of design method of new storage server fan supply line |
| CN111400225B (en) * | 2019-01-02 | 2021-10-22 | 瑞昱半导体股份有限公司 | USB switching circuit |
| CN110489364A (en) * | 2019-07-31 | 2019-11-22 | 联想(北京)有限公司 | Output equipment and output equipment control method |
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