CN104122975B - Computer apparatus and its electricity saving method - Google Patents
Computer apparatus and its electricity saving method Download PDFInfo
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- CN104122975B CN104122975B CN201310149571.7A CN201310149571A CN104122975B CN 104122975 B CN104122975 B CN 104122975B CN 201310149571 A CN201310149571 A CN 201310149571A CN 104122975 B CN104122975 B CN 104122975B
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- 230000005611 electricity Effects 0.000 title claims abstract description 25
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- 230000015654 memory Effects 0.000 claims abstract description 68
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- 230000008878 coupling Effects 0.000 abstract description 21
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Abstract
A kind of computer apparatus and its electricity saving method, this computer apparatus include memory cell, embedded controller, and switch element.Memory cell stores firmware program code.Embedded controller couples memory cell.The input of switch element receives second source, the power source supply end of the output end coupling memory cell of switch element, and the control terminal coupling embedded controller of switch element.When embedded controller receives the first power supply, second source is directed into its output end by embedded controller controlling switch unit during program code is read from its input, so that embedded controller reads firmware program code from memory cell, and after during reading by program code, stop exporting second source to memory cell.
Description
Technical field
The invention relates to a kind of computer apparatus, and in particular to a kind of electricity saving method of computer apparatus.
Background technology
With scientific and technological progress, computer apparatus product is also increasingly popularized, and seems mobile phone, notebook computer (Note Book), individual
The products such as personal digital assistant (Personal Digital Assistant, PDA) are even more with frivolous and feature diversification excellent
Gesture is welcome by numerous users.However, in the case where not influenceing the normal work of computer apparatus product, extend its use
Time, seem extremely important the problem of its power consumption.
For computer apparatus in order to reach the purpose for being easy to carry and using, the offer of battery electric quantity just seems extremely important.Make
User can shut down computer apparatus or into battery saving mode when that need not use computer apparatus, and computer apparatus can be by its power supply
Close or reduce power consumption and avoid expending battery electric quantity.Now, except embedded controller or carry on as before in computer apparatus and have one
Execution task is needed during a little system closedowns and is needed outside the supply of power supply, what remaining all element was all powered off, to reach
The effect of power saving.
However, the firmware program code of embedded controller is stored in the basic input output system of computer apparatus mostly
(BIOS) among unit.Therefore, there is the basic input-output unit of the firmware program code of embedded controller and embedded
The power supply of controller is commonly connected together in design.Consequently, it is possible to embedded controller could be opened in computer apparatus
When machine, firmware program code is read from basic input-output unit to perform task.Also due to basic input and output list
What the power supply of member was connected together with embedded controller, so having read firmware program code even in embedded controller
Afterwards, basic input-output unit is still lasting in power consumption, therefore will reduce computer apparatus and do not having external power supply situation
Under stand-by time.
The content of the invention
In view of this, the present invention proposes a kind of computer apparatus and its electricity saving method, can have been read in embedded controller solid
After part program code, stop providing memory cell of the power supply to firmware program code is stored, thus reach the effect of power saving.
The present invention provides a kind of computer apparatus, and this computer apparatus includes memory cell, embedded controller, and switch list
Member.Wherein, memory cell storage firmware program code.Embedded controller couples memory cell and receives the first power supply.Switch
The input of unit receives second source, the power source supply end of the output end coupling memory cell of switch element, and switch element
Control terminal coupling embedded controller.When embedded controller receives the first power supply, embedded controller is in program code
Control signal is produced during reading second source is directed into by its output end from its input with controlling switch unit, so that embedding
Enter formula controller and read firmware program code from memory cell, and after during being read by program code, stop second
Power supply is exported to memory cell.
The present invention provides a kind of electricity saving method of computer apparatus, and this computer apparatus includes switch element and memory cell.This
Electricity saving method comprises the following steps.First, when receiving the first power supply, control signal is produced during program code is read to control
Second source is directed into memory cell by switch element processed.Then, firmware program code is read from memory cell.Then, pass through
After during program code reading, stop generation control signal and stop exporting second source to storage list with controlling switch unit
Member.
Based on above-mentioned, in computer apparatus and its electricity saving method provided by the present invention, controlled by embedded controller
Switch element, switch element is set to be turned on and off providing to the power supply of memory cell.Allow computer apparatus only in embedded controller
When middle during reading firmware program code, power supply can be just provided to memory cell.Thus, electricity can be effectively reduced persistently to disappear
Consumption, reach the effect of power saving, and and then the stand-by time of increase battery and the service life for extending battery.
For features described above of the invention and advantage can be become apparent, special embodiment below, and it is detailed to coordinate accompanying drawing to make
Carefully it is described as follows.
Brief description of the drawings
Fig. 1 is the schematic diagram for illustrating computer apparatus according to one embodiment of the invention；
Fig. 2 is the circuit diagram for illustrating switch element according to one embodiment of the invention；
Fig. 3 is the flow chart for the electricity saving method for illustrating computer apparatus according to one embodiment of the invention；
Fig. 4 is the working timing figure for illustrating computer apparatus according to one embodiment of the invention.
Description of reference numerals：
100：Computer apparatus；
110：Memory cell；
130：Embedded controller；
150：Switch element；
170：Power supply unit；
C1~C3：Electric capacity；
R1~R3：Resistance；
T1：P-type transistor；
T2、T3：N-type transistor；
T1~t3：Time；
TP：During program code is read；
N1、N2：Node；
AC-IN：Dc source；
DC-IN：AC power；
EV1：First power supply；
EV2：Second source；
EV3：Power supply；
CS：Control signal；
GND：Ground voltage；
S310~S350：Each step of electricity saving method of one embodiment of the invention.
Embodiment
With detailed reference to the one exemplary embodiment of the present invention, illustrate the example of the one exemplary embodiment in the accompanying drawings.
In addition, all possible parts, same or like using element/component/symbology of identical label in drawings and the embodiments
Part.
Fig. 1 is the schematic diagram for illustrating computer apparatus according to one embodiment of the invention.In the present embodiment, computer apparatus 100
Can be that notebook computer, desktop computer, server computer ... wait computer equipment or other kinds of personal mobile
Device, the present invention are not limited this.Fig. 1 is refer to, computer apparatus 100 includes memory cell 110, embedded controller
(Embedded Controller, EC) 130 and switch element 150.Memory cell 110 is, for example, read-only storage (Read
Only Memory, ROM), disposable programmable memory (One Time Programming Memory, OTP Memory) or
Flash memories (Flash Memory) etc., wherein storing the firmware program code for being loaded into embedded controller 130.
In this case embodiment, memory cell 110 is a basic input-output system unit, and which stores for being loaded into computer system most base
This program code, i.e. basic input output system (Basic Input Output System, BIOS), while store embedding
Enter the required firmware program code upon execution of formula controller 130.
Embedded controller 130 couples memory cell 110 and receives the first power supply EV1.It is embedded in this case embodiment
Controller 130 can couple memory cell 110 by serial peripheral interface bus (SPI Bus), to read firmware program code.One
As for, embedded controller 130 is to the power supply of management and control computer apparatus 100, and management and control radiator fan, keyboard, battery
Charge-discharge mechanism ... waits peripheral hardware and function.When computer apparatus 100 shuts down, embedded controller 130 still performs computer
Particular task in device, such as the charge-discharge mechanism of battery, power supply start mechanism ... etc..Switch element 150 can be utilized and patrolled
Collect circuit (logic circuit), the switching switch mode such as (switch) or multiplexer (multiplexer) realizes that it is inputted
End receives second source EV2.In addition, the power source supply end of the output end coupling memory cell 110 of switch element 150 is to provide electricity
Source EV3, and the control terminal coupling embedded controller 130 of switch element 150.
In the present embodiment, computer apparatus also includes a power supply unit 170.In general, the power supply of computer apparatus 100
Supply 170 receives the external ac power source (AC-IN) that AC transformer is provided, or the direct current that its internal cell is provided
Source (DC-IN), and pass through converter converting AC into DC (AC/DC converter) or DC-DC converter (DC/DC
Converter), the voltage in computer apparatus needed for each element is produced.As shown in figure 1, power supply unit 170 can provide first
Power supply EV1 also provides second source EV2 to switch element 150 to embedded controller 130.
When embedded controller 130 receives the first power supply EV1, embedded controller is needed from the storage in computer apparatus
Unit 110 reads firmware program code, can just use being performed for task.Therefore, embedded controller 130 is in program generation
Code utilizes control signal CS to allow switch element 150 to input second source EV2 from it with controlling switch unit 150 during reading
End directs into its output end.Specifically, embedded controller 130 can export a level (such as：Logical zero) arrive switch element
150, the second source EV2 that input receives is directed into by output end with controlling switch unit 150, conveys switch element 150
Output end coupling memory cell 110 can receive second source EV2.It is noted that although the present embodiment is enumerated
The implementation kenel of above-mentioned level, but it is not limited to the present invention, and one skilled in the art can also be by level
It is set as logic 1.
After memory cell 110 receives second source EV2 power supply supply, embedded controller 130 can be with from depositing
Storage unit 110 reads firmware program code.And after during being read by program code, switch element 150 stops second
Power supply EV2 is exported to memory cell.That is, after embedded controller 130 reads firmware program code, it is embedded
Controller 130 can change control signal CS and export to switch element 150, and carrying out controlling switch unit 150 can stop the according to this
Two power supply EV2 direct into memory cell 110.For example, can when 130 firmware program code to be read of embedded controller
Output level (such as：Logical zero) to switch element 150, memory cell 110 is received second source EV2.Work as embedded Control
Device 130 reads firmware program code when finishing, exportable another level (such as：Logic 1) to switch element 150, make storage list
Member 110 stops receiving second source EV2.It is noted that one skilled in the art can be according to the implementation type of level
State, to change the thin portion framework of switch element 150, reach the purpose of manipulation of switches unit 150, the present invention is not limited this.
For example, when AC transformer inserts computer apparatus 100, embedded controller 130 can receive power supply
The first power supply EV1 that supply 170 provides.Now, because embedded controller 130 not yet reads firmware program code, realize
The universal input output pin (general purpose input/output, GPIO) of the chip of embedded controller 130
Level can be based on default settings.With switch element 150 couple general purpose output pin (general purpose output,
GPO) can export default level, i.e. control signal CS, so controlling switch unit 150 power supply unit 170 is provided
Two power supply EV2 are exported to memory cell 110.
Then, embedded controller 130 can be related to start it to read firmware program code from memory cell 110
Operation, make embedded controller 130 can with so that control the portion of element in computer apparatus 100, or according to firmware program generation
Code performs relative program.After embedded controller 130, which reads firmware program code, to be finished, it is possible to control from output pin
The level of output, the control signal exported according to this by output pin are stopped power supply to memory cell 110, reach the mesh of power saving
's.
Fig. 2 is the circuit diagram for illustrating switch element according to one embodiment of the invention.Fig. 2 is refer to, switch element 150 includes
First switch T1, second switch T2, and the 3rd switch T3.In the present embodiment, first switch T1 is P-type transistor, and the
Three switch T3 and second switch T2 are P-type transistor.In addition, switch element also includes electric capacity C1~C3 and resistance R1~R3,
These electric capacity be C1~C3 in order to maintain the voltage of the signal of each point and power supply, resistance R1~R3 is then to provide for its both ends institute
The voltage range of decrease needed.The circuit elements such as transistor, electric capacity and resistance herein configure by way of example only, those skilled in the art
Actual demand can be directed to and give change as one thinks fit, however it is not limited to described above.
In the present embodiment, first switch T1 first end as the input of switch element 150 to receive second source
Output end of EV2, first switch T1 the second end as switch element 150.Electric capacity C1 first end coupling first switch T1's
First end, electric capacity C1 the second end coupling ground voltage GND.Electric capacity C2 first end coupling first switch T1 the second end, electricity
Hold C1 the second end coupling ground voltage GND.Electric capacity C3 first end coupling first switch T1 control terminal, the second of electric capacity C3
End coupling ground voltage GND, electric capacity C1~C3 increase the stability of circuit to the voltage in stabilizing circuit.Thus, first open
Closing T1 can decide whether to turn on by the signal that control terminal receives, and node N1 power supply is directed into node N2 according to this.
The control terminal of second switch T2 first end coupling first switch 150 simultaneously receives second source EV2, second switch T2
The second end coupling ground voltage GND, second switch T2 control terminal receives second source EV2.In the present embodiment, resistance R1
It is coupled between first switch T1 control terminal and second switch T2 first end, its first end coupling first switch T1 control
End, resistance R1 the second end coupling second switch T2 first end.Resistance R2 first end receives second source EV2, resistance R2
The second end coupling second switch T2 first end.Resistance R3 first end receives second source EV2, resistance R3 the second end coupling
Connect second switch T2 control terminal.
3rd switch T3 first end coupling second switch T2 control terminal, the 3rd switch T3 the second end coupling ground connection electricity
Press GND, the 3rd switch T3 control terminal is as the control terminal of switch element 150 to receive control signal CS.In the present embodiment,
When the 3rd switch T3 control terminal receiving control signal CS when, it is assumed that now control signal CS be a low level (such as：Patrol
Collect 0), the 3rd switch T3 can be closed and end the 3rd switch T3 first end and the second end.Now, second switch T2 can because
Second source that its control terminal receives and open, conducting second switch T2 first end and the second end, and first switch T1
The signal of control terminal can turn into because of second switch T2 conducting low level (such as：Logical zero).Based on this, first switch T1 meetings
Open and turn on its first end and the second end, i.e., electric current can be flow to node N2 by node N1, make node N2 can be because of second source EV2
And there is power supply EV3, to supply power to memory cell 110.
When control signal CS from low level (such as：Logical zero) be converted into high level (such as：Logic 1) when, the 3rd switch T3
The 3rd switch T3 first end and the second end can be turned on by unlatching.Now, second switch T2 can be because its control terminal can not connect
The second source EV2 that receives and close, cut-off second switch T2 first end and the second end, and first switch T1 control terminal
Signal can turn into because of second switch T2 cut-off high level (such as：Logic 1).Based on this, first switch T1 can be closed and cut
The only electric current between its first end and the second end, node N2 is set not there is power supply EV3 because of second source EV2, to stop supplying
Electricity is to memory cell 110.
Summary, the embodiment of the present invention propose a kind of electricity saving method of computer apparatus using another viewpoint, and it is applicable
In Fig. 1 computer apparatus 100.Fig. 3 is the flow chart for the electricity saving method for illustrating computer apparatus according to one embodiment of the invention.Fig. 4
It is the working timing figure for illustrating computer apparatus according to one embodiment of the invention.Referring to Fig. 1, Fig. 3 and Fig. 4, in step
In S310, when embedded controller 130 receives the first power supply EV1 in time t1, embedded controller 130 is in time t2 profits
Second source EV2 is directed into by memory cell 110 with controlling switch unit 150 with control signal CS.In part embodiment, in detail
For thin, switch element 150 receives control signal CS, and enabled 3rd switch T3 ends.When the 3rd switch T3 cut-offs, second
Switch T2 conductings.When second switch T2 is turned on, first switch T1 conductings, second source EV2 is directed into memory cell
110.As shown by arrow Q, power supply EV3 is due to the conducting of first switch, and second source EV2 is directed into switch element 150
Output end and produce.
Then, because memory cell 110 has been received by second source EV2, in step S330, embedded controller 130
Firmware program code can be read from memory cell 110.As shown in figure 4, in the present embodiment, embedded controller 130 is in program
TP reads firmware program code during code is read.Thus, embedded controller 130 can be to start to perform related operation.
Then, in step S350, during being read by program code after TP, in time t3 embedded controller 130
Using control signal CS with controlling switch unit 150, so that switch element 150 stops second source EV2 after time t 3
Export to memory cell 110.In part embodiment, specifically, switch element 150 receives control signal CS, and enabled the
Three switch T3 conductings.When the 3rd switch T3 conductings, second switch T2 cut-offs.When second switch T2 ends, first switch T1
Cut-off, to stop second source EV2 directing into memory cell 110.
In summary, computer apparatus of the invention and its electricity saving method by embedded controller come controlling switch unit,
It can be stopped power supply after embedded controller has read firmware program code to memory cell, reach the effect of power saving.Such one
Come, when embedded controller need not read the firmware program code in memory cell, offer can be closed to memory cell
Power supply supply, make memory cell not continuing consume electricity.Therefore, the computer apparatus that is provided with the embodiment of the present invention and its
Electricity saving method can be effectively reduced the continued depletion amount of battery electric quantity, and increase the time that battery uses, and effectively downgrade non-use
The power consumption of middle memory cell, and then raising battery availability factor, extension computer apparatus are treated when no external power source is supplied
The machine time.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (9)
- A kind of 1. computer apparatus, it is characterised in that including：One memory cell, a firmware program code is stored, the wherein memory cell is a basic input-output system unit；One embedded controller, couple the memory cell and receive one first power supply；AndOne switch element, its input receive a second source, and the output end of the switch element couples the power supply of the memory cell Feed end, and the control terminal of the switch element couples the embedded controller,Wherein, when the embedded controller receives first power supply, the embedded controller is during a program code is read Using a control signal to control the switch element that the second source is directed into its output end from its input, so that having connect The embedded controller for receiving the second source reads the firmware program code from the memory cell, and is passing through the program generation During code is read and the embedded controller is read after the firmware program code finishes, and stops exporting the second source to this Memory cell.
- 2. computer apparatus according to claim 1, it is characterised in that the switch element includes：One first switch, its first end as the input of the switch element to receive the second source, the first switch Output end of second end as the switch element；One second switch, the first end of the second switch couple the control terminal of the first switch and receive the second source, and this The second end ground connection of two switches, the control terminal of the second switch receive the second source；AndOne the 3rd switch, has first end, the second end and control terminal, and the first end of the 3rd switch couples the control of the second switch End processed, the second end ground connection of the 3rd switch, the control terminal of the 3rd switch is as the control terminal of the switch element to receive this Control signal,Wherein, the control terminal of the 3rd switch ends the first end and second of the 3rd switch when receiving the control signal End, the first end of the second switch and the conducting of the second end, and the first end of the 3rd switch and the conducting of the second end.
- 3. computer apparatus according to claim 2, it is characterised in that the first switch is P-type transistor, the second switch It is N-type transistor with the 3rd switch.
- 4. computer apparatus according to claim 1, it is characterised in that the computer apparatus also includes a power-supply unit, The power-supply unit provides first power supply to the embedded controller and provides the second source to the switch element.
- 5. computer apparatus according to claim 1, it is characterised in that the embedded controller is total by Serial Peripheral Interface (SPI) Line couples the memory cell.
- A kind of 6. electricity saving method of computer apparatus, it is characterised in that the computer apparatus includes a switch element and a memory cell, The electricity saving method includes：When receiving first power supply, a control signal is utilized to control the switch element by one during a program code is read Second source directs into the memory cell, and wherein the memory cell is a basic input-output system unit；A firmware program code is read from the memory cell for having been received by the second source；AndDuring being read by the program code and embedded controller is read after the firmware program code finishes, and changes the control Signal with control the switch element stop the second source being exported to the memory cell.
- 7. electricity saving method according to claim 6, it is characterised in that the switch element includes a first switch, one second Switch and one the 3rd switch, the first end of the first switch as the input of the switch element to receive the second source, Output end of second end of the first switch as the switch element,Also, control the switch element that the second source is directed into the memory cell to comprise the following steps：The switch element receives the control signal, enables the 3rd switch cut-off；When the 3rd switch cut-off, second switch conducting；AndWhen the second switch turns on, first switch conducting, the second source is directed into memory cell.
- 8. electricity saving method according to claim 7, it is characterised in that the switch element stop by the second source export to The memory cell comprises the following steps：The switch element receives the control signal, enables the 3rd switch conduction；When three switch conductions, second switch cut-off；AndWhen the second switch ends, first switch cut-off, to stop the second source directing into memory cell.
- 9. electricity saving method according to claim 6, it is characterised in that provide first power supply extremely by a power-supply unit The embedded controller and the second source is provided to the switch element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310149571.7A CN104122975B (en) | 2013-04-26 | 2013-04-26 | Computer apparatus and its electricity saving method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310149571.7A CN104122975B (en) | 2013-04-26 | 2013-04-26 | Computer apparatus and its electricity saving method |
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| Publication Number | Publication Date |
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| CN104122975A CN104122975A (en) | 2014-10-29 |
| CN104122975B true CN104122975B (en) | 2017-12-22 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5974551A (en) * | 1995-10-10 | 1999-10-26 | Samsung Electronics Co., Ltd. | Power supply device and a power supply method for a computer system |
| CN101408792A (en) * | 2007-10-10 | 2009-04-15 | 英业达股份有限公司 | Power supply managing device and managing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100603926B1 (en) * | 1999-10-25 | 2006-07-24 | 삼성전자주식회사 | Power supply control circuit for computer system having a plurality of power management states and control method of the same |
-
2013
- 2013-04-26 CN CN201310149571.7A patent/CN104122975B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5974551A (en) * | 1995-10-10 | 1999-10-26 | Samsung Electronics Co., Ltd. | Power supply device and a power supply method for a computer system |
| TW410286B (en) * | 1995-10-10 | 2000-11-01 | Samsung Electronics Co Ltd | A power supply device and a power supplying method for computer systems |
| CN101408792A (en) * | 2007-10-10 | 2009-04-15 | 英业达股份有限公司 | Power supply managing device and managing method thereof |
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| CN104122975A (en) | 2014-10-29 |
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