CN101526803A - Power saving system and power saving method - Google Patents
Power saving system and power saving method Download PDFInfo
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- CN101526803A CN101526803A CN200810081758A CN200810081758A CN101526803A CN 101526803 A CN101526803 A CN 101526803A CN 200810081758 A CN200810081758 A CN 200810081758A CN 200810081758 A CN200810081758 A CN 200810081758A CN 101526803 A CN101526803 A CN 101526803A
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Abstract
The invention relates to a power saving system, which comprises a system chip, at least one controlling unit and at least one switch. The system chip is coupled to the controlling unit, and the switch is coupled between the controlling unit and a power supply, and switched on or switched off according to a general purpose input output (GPIO) signal. When the switch is switched on, the controlling unit is started. When no auxiliary equipment is coupled to the system chip through a connecting port and the controlling unit, the controlling unit is closed so as to save unnecessary power consumption.
Description
Technical field
The relevant a kind of power save circuit of the present invention, particularly relevant a kind of power save circuit that is applied to computer system.
Background technology
When traditional computer system boot-strap, all utility appliance of computer all can be aroused, and in other words, the corresponding control chip of all utility appliance of computer also all can be activated with in running order.
Yet, the user often can not use all computer utility appliance, or a certain segment length in the time user only use partly computer utility appliance, and computer utility appliance that these seldom use and corresponding control chip all are in the state of electric consumption always, and this can cause the traditional electrical brain system to have the problem that consumes the too much energy.
Though computer has five kinds of ACPI (Advanced Configuration and Power Interface) state at present, for example: S0, S1, S3, S4 and six kinds of states of S5.Yet having only state S0 is the state of computer system normal running, and all the other S1 to S5 states, computer all are in repaiies the dormancy state, though power saving, the user also can't normally use computer.
Summary of the invention
In view of this, the invention provides a kind of power-saving method, its method is used for an electronic system, electronic system comprises that at least one control module correspondence is connected at least one utility appliance, its method comprises whether the scanning utility appliance couples control module, do not have the control module of coupling as if utility appliance, electronic system closing control unit, and upgrade an auxiliary device status table, and continue the next utility appliance of scanning.
The present invention more provides a kind of power saving apparatus, in order to judge whether carrying out Energy Saving Control with a utility appliance coupling access status.Power saving apparatus comprises a System on Chip/SoC, a control module and a switch.Wherein System on Chip/SoC has a general input/output port, control module then is coupled to System on Chip/SoC, when System on Chip/SoC detected control module and utility appliance and do not have coupling access status, general input/output port was sent a control signal and is given switch, makes switch come the closing control unit to carry out Energy Saving Control.
Description of drawings
Fig. 1 shows the process flow diagram of power-saving method according to an embodiment of the invention; And
Fig. 2 shows the block schematic diagram of power saving apparatus according to another embodiment of the present invention.
Embodiment
For above and other objects of the present invention, feature and advantage can be become apparent, cited below particularlyly go out preferred embodiment, and conjunction with figs. is described in detail below:
Fig. 1 shows the process flow diagram of power-saving method according to an embodiment of the invention.According to one embodiment of the invention, when Department of Electronics unifies all control modules of starting up or starts a checking mechanism or arbitrary control module when changing starting state (step S100) into by closed condition, wherein checking mechanism can be to carry out an application program to scan (promptly detecting) by a user after by next control knob.Checking mechanism also can be to carry out a picture option by a user to select the back to carry out an application program to scan.Next whether application program (AP) can a certain utility appliance of scanning be coupled to a corresponding control module (step S110) by a connectivity port, judge whether utility appliance is connected to control module (step S120), if a utility appliance couples corresponding control module, corresponding control module can be activated, if utility appliance does not have and couples corresponding control module, application program can be passed through Basic Input or Output System (BIOS) (BIOS, Basic Input Output System) and a general input/output port (GPIO, General purposeInput/Output) output one control signal is given a switch, switch then cuts out a power supply and gives the corresponding control module of institute to reach energy-conservation purpose (step S130), application program also can the (OS of notifying operation system, OperationSystem) carry out utility appliance supervisory routine (DM, Device Manger) to upgrade auxiliary device status table (step S140), next and judge whether all utility appliance scannings (step S150), if do not scanned all utility appliance, get back to step S110.According to another embodiment of the present invention, electronic system also can scan to judge whether utility appliance is coupled to system by hardware, might not be above-mentioned application program.
Fig. 2 shows the synoptic diagram of power saving apparatus 300 according to another embodiment of the present invention.Power saving apparatus 300 comprises a South Bridge chip 310, a plurality of control module, for example Local Area Network control module 320, plug-in card bus (CardBus) control module 330,1394 control modules 340, ESATA (External Serial ATA) control module 350, corresponding a plurality of switches 322,332,342 and 352 and corresponding a plurality of computer utility appliance 324,334,344 and 354.As shown in Figure 2, South Bridge chip 310 can couple Local Area Network control module 320, couple plug-in card bus (Card Bus) control module 330, couples 1394 control modules 340 and couple ESATA (External Serial ATA) control module 350 by PCI Express bus to be connected by PCI or PCI Express bus by PCI Express bus by pci bus.And each control module 320,330,340 and 350 has a connectivity port (not shown) respectively, and couple by connectivity port and each utility appliance 324,334,344 and 354, each control module 320,330,340 also is connected with a power supply Vdd with 352 by switch 322,332,342 respectively with 350.
According to one embodiment of the invention, each switch 322,332,342 and 352 is to be coupled between a power supply Vdd and each control module and according to general input/output port signal by a nmos pass transistor to open or close, for example: switch 322 opens or cuts out according to general input/output port signal GPIO1, when utility appliance 324 connects control module 320 by the connectivity port, general input/output port signal GPIO1 is a noble potential, nmos pass transistor 322 conductings, LAN (Local Area Network) control unit 320 receives power supply Vdd and is activated, and South Bridge chip 310 transmits with LAN (Local Area Network) control unit 320 by pci interface and 320 beginnings of LAN (Local Area Network) control unit and receives data.When utility appliance 324 is not coupled to South Bridge chip 310 by connectivity port and LAN (Local Area Network) (LAN) control module 320, application program (AP) can be sent general input/output port signal GPIO1 off switch 322, and LAN (Local Area Network) control unit 320 can be closed to save electrical source consumption.
When utility appliance 334 not by connectivity port and plug-in card bus (Card Bus) when control module 330 is coupled to South Bridge chip 310, application program (AP) can be sent general input/output port signal GPIO2 off switch 332, and plug-in card bus (Card Bus) control module 330 can be closed to save electrical source consumption.In like manner, 1394 control modules 340 and ESATA control module 350 be not when the user uses, just do not have utility appliance 344 and 354 and couple control module 340 and at 350 o'clock, application program (AP) can be sent general input/output port signal GPIO3 and GPIO4 off switch 342 and 352 respectively, and therefore 1394 control modules 340 and ESATA control module 350 can be closed to save electrical source consumption.In addition, switch 322,332,342 and 352 does not limit and can only adopt nmos pass transistor, can be other utility appliance with identical function yet.
That is to say, when a utility appliance was coupled to System on Chip/SoC by connectivity port and control module, control module just can be activated, to avoid the unnecessary waste of power supply, rather than the traditional electrical brain system can all be opened the control module of all utility appliance and cause the power supply waste when start.In addition, computer system can be to scan all utility appliance one time once start the time, also can be just to go to scan all utility appliance when a trigger event.
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit scope of the present invention; anyly be familiar with this operator; without departing from the spirit and scope of the present invention; when can making all changes that is equal to or replacement, so protection scope of the present invention is when looking being as the criterion that claims define.
Claims (11)
1. a power-saving method is used for electronic system, and described electronic system comprises that at least one control module is connected respectively at least one utility appliance, it is characterized in that described power-saving method comprises:
Detect arbitrary described utility appliance and whether couple arbitrary described control module;
If arbitrary described utility appliance does not have and couples arbitrary described control module, described electronic system is closed described control module; And
Upgrade the auxiliary device status table, and continue to detect next utility appliance.
2. power-saving method according to claim 1 is characterized in that, detects arbitrary described utility appliance and whether couples arbitrary described control module, and be behind all control modules of starting up, to carry out.
3. power-saving method according to claim 1, it is characterized in that, detect arbitrary described utility appliance and whether couple before arbitrary described control module, also comprise the startup checking mechanism, will detect arbitrary described utility appliance with decision and whether couple arbitrary described control module.
4. power-saving method according to claim 3 is characterized in that, starts described checking mechanism, is after pressing control knob, and executive utility is to detect.
5. power-saving method according to claim 3 is characterized in that, starts described checking mechanism, is that executive utility is to detect after carrying out the selection of picture option.
6. whether power-saving method according to claim 1 is characterized in that, scan arbitrary described utility appliance and couple before arbitrary described control module, comprises that also arbitrary control module becomes starting state by closed condition.
7. power-saving method according to claim 1 is characterized in that described electronic system is closed described control module, is to use general input/output port to send control signal and gives switch, closes power supply with described switch and gives described control module.
8. power saving apparatus carries out Energy Saving Control in order to judge whether to couple with utility appliance, it is characterized in that described power saving apparatus comprises:
System on Chip/SoC has general input/output port;
Control module is coupled to described System on Chip/SoC; And
Switch, when described System on Chip/SoC detects described control module and described utility appliance and does not have coupling access status, described general input/output port is sent control signal and is given described switch, makes described switch close power supply and gives described control module, to carry out Energy Saving Control.
9. power saving apparatus according to claim 8 is characterized in that, when described utility appliance coupled described control module, the described control module of described utility appliance correspondence was activated.
10. power saving apparatus according to claim 8, it is characterized in that, described System on Chip/SoC detects described control module and described utility appliance does not have coupling access status, uses the application program of described System on Chip/SoC inside to carry out the coupling access status that detects described control module and described utility appliance.
11. power saving apparatus according to claim 8 is characterized in that, described System on Chip/SoC is a South Bridge chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810081758A CN101526803A (en) | 2008-03-06 | 2008-03-06 | Power saving system and power saving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810081758A CN101526803A (en) | 2008-03-06 | 2008-03-06 | Power saving system and power saving method |
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| CN101526803A true CN101526803A (en) | 2009-09-09 |
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| CN200810081758A Pending CN101526803A (en) | 2008-03-06 | 2008-03-06 | Power saving system and power saving method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101790225A (en) * | 2010-03-16 | 2010-07-28 | 华为终端有限公司 | Power management method and device for on-line module |
| CN102902334A (en) * | 2011-07-28 | 2013-01-30 | 鸿富锦精密工业（深圳）有限公司 | CPU (central processing unit) power supply regulating method and CPU power supply regulating system |
-
2008
- 2008-03-06 CN CN200810081758A patent/CN101526803A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101790225A (en) * | 2010-03-16 | 2010-07-28 | 华为终端有限公司 | Power management method and device for on-line module |
| WO2011113349A1 (en) * | 2010-03-16 | 2011-09-22 | 华为终端有限公司 | Power management method and apparatus of a network access module |
| CN102902334A (en) * | 2011-07-28 | 2013-01-30 | 鸿富锦精密工业（深圳）有限公司 | CPU (central processing unit) power supply regulating method and CPU power supply regulating system |
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Open date: 20090909 |