CN104122975A - Computer device and power saving method thereof - Google Patents
Computer device and power saving method thereof Download PDFInfo
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- CN104122975A CN104122975A CN201310149571.7A CN201310149571A CN104122975A CN 104122975 A CN104122975 A CN 104122975A CN 201310149571 A CN201310149571 A CN 201310149571A CN 104122975 A CN104122975 A CN 104122975A
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Abstract
Provided are a computer device and a power saving method thereof. The computer device comprises a storage unit, an embedded controller and a switch unit. The storage unit stores firmware program codes. The embedded controller is coupled with the storage unit. An input end of the switch unit receives a second power supply, an output end of the switch unit is coupled with a power supply end of the storage unit, and a control end of the switch unit is coupled with the embedded controller. When the embedded controller receives a first power supply, the embedded controller controls the switch unit to guide the second power supply to the output end of the switch unit from the input end of the switch unit during a program code reading period, so that the embedded controller reads the firmware program codes from the storage unit, and second voltages are stopped from being output to the storage unit after the program code reading period is went through.
Description
Technical field
The invention relates to a kind of computer apparatus, and particularly relevant for a kind of electricity saving method of computer apparatus.
Background technology
Along with scientific-technical progress, computer apparatus product is also day by day universal, similarly be that the products such as mobile phone, notebook computer (Note Book), personal digital assistant (Personal Digital Assistant, PDA) are subject to numerous users' welcome especially with the advantage of frivolous and functional diversification.Yet, in the situation that do not affect the normal work of computer apparatus product, extending its service time, it is extremely important that the problem of its power consumption seems.
Computer apparatus is in order to reach the object that is easy to carry and uses, and providing of battery electric quantity just seems extremely important.User can be when not needing to use computer apparatus by computer apparatus shutdown or enter battery saving mode, and computer apparatus can or reduce power consumption and avoids consumes battery electric weight its power-off.Now, in computer apparatus, except embedded controller or when still having some system closedowns, need to execute the task and need the supply of power supply, all the other all elements are all power-off, to reach the effect of power saving.
Yet the firmware program code of embedded controller is stored in the middle of Basic Input or Output System (BIOS) (BIOS) unit of computer apparatus mostly.Therefore, have that the basic input-output unit of firmware program code of embedded controller and the power supply of embedded controller normally link together when design.Thus, embedded controller could, in starting up for computer, read firmware program code and execute the task from basic input-output unit.Also power supply and the embedded controller due to basic input-output unit links together, even so after embedded controller has read firmware program code, basic input-output unit still continue in power consumption, therefore just can reduce computer apparatus in the stand-by time not having in external power supply situation.
Summary of the invention
In view of this, the present invention proposes a kind of computer apparatus and electricity saving method thereof, can read after firmware program code at embedded controller, stops providing the storage unit of power supply to storing firmware program code, reaches thus the effect of power saving.
The invention provides a kind of computer apparatus, this computer apparatus comprises storage unit, embedded controller, and switch element.Wherein, cell stores firmware program code.Embedded controller couples storage unit and receives the first power supply.The input end of switch element receives second source, and the output terminal of switch element couples the power source supply end of storage unit, and the control end of switch element couples embedded controller.When embedded controller receives the first power supply, embedded controller produces control signal at program code during read, with gauge tap unit, second source is directed into its output terminal from its input end, thereby make embedded controller read firmware program code from storage unit, and after through program code during read, stop exporting second voltage to storage unit.
The invention provides a kind of electricity saving method of computer apparatus, this computer apparatus comprises switch element and storage unit.This electricity saving method comprises the following steps.First, when receiving the first power supply, at program code during read, produce control signal, with gauge tap unit, second source is directed into storage unit.Then, from storage unit, read firmware program code.Then, after program code during read, stop producing control signal and stop exporting second source to storage unit with gauge tap unit.
Based on above-mentioned, in computer apparatus provided by the present invention and electricity saving method thereof, by embedded controller, come gauge tap unit, make switch element open or close the power supply providing to storage unit.Allow computer apparatus only during embedded controller reads firmware program code in, just can provide power supply to storage unit.Thus, can effectively reduce electric weight and continue consume, reach the effect of power saving, and and then reach the serviceable life that increases the stand-by time of battery and extend battery.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
Accompanying drawing explanation
Fig. 1 is according to the schematic diagram of one embodiment of the invention explanation computer apparatus;
Fig. 2 is according to the circuit diagram of one embodiment of the invention explanation switch element;
Fig. 3 is according to the process flow diagram of the electricity saving method of one embodiment of the invention explanation computer apparatus;
Fig. 4 is according to the working timing figure of one embodiment of the invention explanation computer apparatus.
Description of reference numerals:
100: computer apparatus;
110: storage unit;
130: embedded controller;
150: switch element;
170: power supply unit;
C1～C3: electric capacity;
R1～R3: resistance;
T1:P transistor npn npn;
T2, T3:N transistor npn npn;
T1～t3: time;
TP: program code during read;
N1, N2: node;
AC-IN: direct supply;
DC-IN: AC power;
EV1: the first power supply;
EV2: second source;
EV3: power supply;
CS: control signal;
GND: ground voltage;
S310～S350: each step of the electricity saving method of one embodiment of the invention.
Embodiment
With detailed reference to one exemplary embodiment of the present invention, the example of described one exemplary embodiment is described in the accompanying drawings.In addition, all may part, in drawings and the embodiments, use the identical or similar portions of the element/member/symbology of same numeral.
Fig. 1 is according to the schematic diagram of one embodiment of the invention explanation computer apparatus.In the present embodiment, computer apparatus 100 can be notebook computer, desktop computer, server computer ... Deng computer equipment, can be also the personal movable apparatus of other kinds, the present invention does not limit this.Please refer to Fig. 1, computer apparatus 100 comprises storage unit 110, embedded controller (Embedded Controller, EC) 130 and switch element 150.Storage unit 110 is for example ROM (read-only memory) (Read Only Memory, ROM), disposable programmable memory (One Time Programming Memory, OTP Memory) or flash memories (Flash Memory) etc., wherein stored the firmware program code that is used for being written into embedded controller 130.In this case embodiment, storage unit 110 is a basic input-output system unit, it has been stored and has been used for being written into the most basic program code of computer system, be Basic Input or Output System (BIOS) (Basic Input Output System, BIOS), stored embedded controller 130 required firmware program code when carrying out simultaneously.
Embedded controller 130 couples storage unit 110 and receives the first power supply EV1.In this case embodiment, embedded controller 130 can couple storage unit 110 by serial peripheral interface bus (SPI Bus), to read firmware program code.In general, embedded controller 130 is in order to the power supply of management and control computer apparatus 100, and the charge-discharge mechanism of management and control radiator fan, keyboard, battery ... Deng peripheral hardware and function.Even when computer apparatus 100 shutdown, embedded controller 130 is still carried out the particular task in computer apparatus, for example the charge-discharge mechanism of battery, power supply are started shooting machine-processed ... Deng.Switch element 150 can utilize the modes such as logical circuit (logic circuit), change-over switch (switch) or multiplexer (multiplexer) to realize, and its input end receives second source EV2.In addition, the output terminal of switch element 150 couples the power source supply end of storage unit 110 so that power supply EV3 to be provided, and the control end of switch element 150 couples embedded controller 130.
In the present embodiment, computer apparatus also comprises a power supply unit 170.In general, the power supply unit 170 of computer apparatus 100 receives the external ac power source (AC-IN) that AC transformer provides, or the direct supply (DC-IN) that provides of its internal cell, and turn direct current transducer (AC/DCconverter) or DC-DC converter (DC/DC converter) by interchange, produce the required voltage of each element in computer apparatus.As shown in Figure 1, power supply unit 170 can provide the first power supply EV1 to embedded controller 130, also provides second source EV2 to switch element 150.
When embedded controller 130 receives the first power supply EV1, embedded controller need to the storage unit 110 from computer apparatus read firmware program code, just can use the task that wish is carried out of carrying out.Therefore, embedded controller 130 utilizes control signal CS with gauge tap unit 150 at program code during read, allows switch element 150 that second source EV2 is directed into its output terminal from its input end.Specifically, embedded controller 130 (for example: logical zero) to switch element 150 can be exported a level, second voltage source EV2 input end being received with gauge tap unit 150 directs into output terminal, and the storage unit 110 that the output terminal of transference switch element 150 couples can receive second voltage source EV2.It is worth mentioning that, although the present embodiment has been enumerated the enforcement kenel of above-mentioned level, it is not in order to limit the present invention, and this area has knows that the knowledgeable also can be set as logical one by level conventionally.
In storage unit 110, receive after the power supply supply of second source EV2, embedded controller 130 just can read firmware program code from storage unit 110.And after through program code during read, switch element 150 stops exporting second voltage EV2 to storage unit.That is to say, after embedded controller 130 reads firmware program code, embedded controller 130 can change control signal CS and export switch element 150 to, comes gauge tap unit 150 can stop according to this second source EV2 to direct into storage unit 110.For instance, when embedded controller 130 is wanted to read firmware program code, exportable level (for example: logical zero) to switch element 150, make storage unit 110 receive second source EV2.When embedded controller 130 reads firmware program code when complete, exportable another level (for example: logical one) to switch element 150, make storage unit 110 stop receiving second source EV2.Should be noted, this area has knows that the knowledgeable can change the thin portion framework of switch element 150 according to the enforcement kenel of level conventionally, reaches the object of manipulation of switches unit 150, and the present invention does not limit this.
For instance, when AC transformer is inserted computer apparatus 100, embedded controller 130 can receive the first power supply EV1 that power supply unit 170 provides.Now, because embedded controller 130 not yet reads firmware program code, the level of realizing the universal input output pin (general purpose input/output, GPIO) of the chip of embedded controller 130 can be take default settings as main.General output pin (the general purpose output coupling with switch element 150, GPO) can export default level, be control signal CS, and then the second source EV2 that gauge tap unit 150 provides power supply unit 170 export storage unit 110 to.
Then, embedded controller 130 just can read firmware program code from storage unit 110, to start its relevant operation, make embedded controller 130 can and then control the portion of element in computer apparatus 100, or carry out relative program according to firmware program code.When embedded controller 130 read firmware program code complete after, just can control the level from output pin output, the control signal of exporting by output pin is according to this stopped power supply to storage unit 110, reaches the object of power saving.
Fig. 2 is according to the circuit diagram of one embodiment of the invention explanation switch element.Please refer to Fig. 2, switch element 150 comprises the first switch T1, second switch T2, and the 3rd switch T3.In the present embodiment, the first switch T1 is P transistor npn npn, and the 3rd switch T3 and second switch T2 are P transistor npn npn.In addition, switch element also comprises capacitor C 1～C3 and resistance R 1～R3, these electric capacity be C1～C3 in order to maintain the signal of each point and the voltage of power supply, resistance R 1～R3 is in order to provide its two ends the required voltage range of decrease.The circuit component configurations such as transistor herein, electric capacity and resistance are only for illustrating, and those skilled in the art can give change as one thinks fit for actual demand, are not limited to above-mentioned explanation.
In the present embodiment, the first end of the first switch T1 is as the input end of switch element 150 to receive second source EV2, and the second end of the first switch T1 is as the output terminal of switch element 150.The first end of capacitor C 1 couples the first end of the first switch T1, and the second end of capacitor C 1 couples ground voltage GND.The first end of capacitor C 2 couples the second end of the first switch T1, and the second end of capacitor C 1 couples ground voltage GND.The first end of capacitor C 3 couples the control end of the first switch T1, and the second end of capacitor C 3 couples ground voltage GND, and capacitor C 1～C3, in order to the voltage in stabilizing circuit, increases the stability of circuit.Thus, the signal that the first switch T1 can receive by control end determines whether conducting, according to this power supply of node N1 is directed to node N2.
The first end of second switch T2 couples the control end of the first switch 150 and receives second source EV2, and the second end of second switch T2 couples ground voltage GND, and the control end of second switch T2 receives second source EV2.In the present embodiment, resistance R 1 is coupled between the control end of the first switch T1 and the first end of second switch T2, and its first end couples the control end of the first switch T1, and the second end of resistance R 1 couples the first end of second switch T2.The first end of resistance R 2 receives second voltage source EV2, and the second end of resistance R 2 couples the first end of second switch T2.The first end of resistance R 3 receives second voltage source EV2, and the second end of resistance R 3 couples the control end of second switch T2.
The first end of the 3rd switch T3 couples the control end of second switch T2, and the second end of the 3rd switch T3 couples ground voltage GND, the control end of the 3rd switch T3 as the control end of switch element 150 with reception control signal CS.In the present embodiment, when the control end of the 3rd switch T3 is when receiving control signal CS, suppose now control signal CS be a low level (for example: logical zero), the 3rd switch T3 can be closed and end first end and the second end of the 3rd switch T3.Now, second switch T2 can open because of the second voltage source that its control end receives, the first end of conducting second switch T2 and the second end, and the signal of the control end of the first switch T1 can (for example: logical zero) become low level because of the conducting of second switch T2.Based on this, the first switch T1 can open and its first end of conducting and the second end, and electric current can flow to node N2 by node N1, makes node N2 have power supply EV3 because of second source EV2, to supply power to storage unit 110.
When control signal CS from low level (for example: logical zero) (for example: in the time of logical one), the 3rd switch T3 can be unlocked and first end and the second end of conducting the 3rd switch T3 convert high level to.Now, second switch T2 can close because of the second voltage source EV2 that its control end cannot receive, first end and the second end of cut-off second switch T2, and the signal of the control end of the first switch T1 can (for example: logical one) become high level because of the cut-off of second switch T2.Based on this, the first switch T1 can close and end the electric current between its first end and the second end, makes node N2 can not have power supply EV3 because of second source EV2, to stop power supply to storage unit 110.
Comprehensively above-mentioned, the embodiment of the present invention utilizes another viewpoint to propose a kind of electricity saving method of computer apparatus, and it is applicable to the computer apparatus 100 of Fig. 1.Fig. 3 is according to the process flow diagram of the electricity saving method of one embodiment of the invention explanation computer apparatus.Fig. 4 is according to the working timing figure of one embodiment of the invention explanation computer apparatus.Referring to Fig. 1, Fig. 3 and Fig. 4, in step S310, when embedded controller 130 is when time t1 receives the first power supply EV1, embedded controller 130 utilizes control signal CS, with gauge tap unit 150, second source EV2 is directed into storage unit 110 at time t2.In part embodiment, specifically, switch element 150 reception control signal CS, and enable the 3rd switch T3 cut-off.When the 3rd switch T3 cut-off, second switch T2 conducting.When second switch T2 conducting, the first switch T1 conducting, to direct into storage unit 110 by second source EV2.As shown in arrow Q, power supply EV3 is the conducting due to the first switch, and second source EV2 is directed to the output terminal of switch element 150 and produces.
Then,, because storage unit 110 has received second source EV2, in step S330, embedded controller 130 can read firmware program code from storage unit 110.As shown in Figure 4, in the present embodiment, embedded controller 130 reads firmware program code at program code during read TP.Thus, embedded controller 130 just can start to carry out relevant operation.
Then, in step S350, after program code during read TP, at time t3 embedded controller 130, utilize control signal CS with gauge tap unit 150, so that switch element 150 stops exporting second source EV2 to storage unit 110 after time t3.In part embodiment, specifically, switch element 150 reception control signal CS, and enable the 3rd switch T3 conducting.When the 3rd switch T3 conducting, second switch T2 cut-off.When second switch T2 ends, the first switch T1 cut-off, to stop that second source EV2 is directed into storage unit 110.
In sum, computer apparatus of the present invention and electricity saving method thereof come gauge tap unit by embedded controller, can after embedded controller has read firmware program code, stop power supply to storage unit, reach the effect of power saving.Thus, when embedded controller does not need the firmware program code in reading cells, can close the power supply supply providing to storage unit, make storage unit not continue consumes power.Therefore, the lasting waste that can effectively reduce battery electric quantity with computer apparatus that the embodiment of the present invention was provided and electricity saving method thereof, and increase the time that battery is used, effectively downgrade the power consumption of storage unit in non-use, and then improve battery availability factor, extend computer apparatus and there is no external power source for seasonable stand-by time.
Finally it should be noted that: each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit above; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a computer apparatus, is characterized in that, comprising:
One storage unit, storage one firmware program code;
One embedded controller, couples this storage unit and receives one first power supply; And
One switch element, its input end receives a second source, and the output terminal of this switch element couples the power source supply end of this storage unit, and the control end of this switch element couples this embedded controller,
Wherein, when this embedded controller receives this first power supply, this embedded controller utilizes a control signal, to control this switch element, this second source is directed into its output terminal from its input end at a program code during read, thereby make this embedded controller read this firmware program code from this storage unit, and through after this program code during read, stop exporting this second voltage to this storage unit.
2. computer apparatus according to claim 1, is characterized in that, this switch element comprises:
One first switch, its first end is as this input end of this switch element to receive this second source, and the second end of this first switch is as the output terminal of this switch element;
One second switch, the first end of this second switch couples the control end of this first switch and receives this second source, the second end ground connection of this second switch, the control end of this second switch receives this second source; And
One the 3rd switch, has first end, the second end and control end, and the first end of the 3rd switch couples the control end of this second switch, the second end ground connection of the 3rd switch, the control end of the 3rd switch as the control end of this switch element to receive this control signal,
Wherein, the control end of the 3rd switch ends first end and second end of the 3rd switch when receiving this control signal, this second switch first end and the second end conducting, and the first end of the 3rd switch and the second end conducting.
3. computer apparatus according to claim 2, is characterized in that, this first switch is P transistor npn npn, and this second switch and the 3rd switch are N-type transistor.
4. computer apparatus according to claim 1, is characterized in that, this computer apparatus also comprises a power-supply unit, and this power-supply unit provides this first power supply to this embedded controller and provides this second source to this switch element.
5. computer apparatus according to claim 1, is characterized in that, this embedded controller couples this storage unit by serial peripheral interface bus.
6. computer apparatus according to claim 1, is characterized in that, this storage unit is a basic input-output system unit.
7. an electricity saving method for computer apparatus, is characterized in that, this computer apparatus comprises a switch element and a storage unit, and this electricity saving method comprises:
When receiving first power supply, at a program code during read, utilize a control signal, to control this switch element, one second source is directed into this storage unit;
From this storage unit, read a firmware program code; And
Through after this program code during read, change this control signal and stop exporting this second source to this storage unit to control this switch element.
8. electricity saving method according to claim 7, it is characterized in that, this switch element comprises one first switch, a second switch and one the 3rd switch, the first end of this first switch as this input end of this switch element to receive this second source, the second end of this first switch is as the output terminal of this switch element
And, control this switch element and this second source is directed into this storage unit comprise the following steps:
This switch element receives this control signal, enables the 3rd switch cut-off;
When the 3rd switch cut-off, this second switch conducting; And
When this second switch conducting, this first switch conduction, to direct into storage unit by this second source.
9. electricity saving method according to claim 8, is characterized in that, this switch element stops exporting this second source to this storage unit and comprises the following steps:
This switch element receives this control signal, enables the 3rd switch conduction;
When the 3rd switch conduction, this second switch cut-off; And
When this second switch cut-off, this first switch cut-off, to stop that this second source is directed into storage unit.
10. electricity saving method according to claim 7, is characterized in that, by a power-supply unit, is provided this first power supply to this embedded controller and is provided this second source to this switch element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310149571.7A CN104122975B (en) | 2013-04-26 | 2013-04-26 | Computer apparatus and its electricity saving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 true CN104122975A (en) | 2014-10-29 |
| CN104122975B CN104122975B (en) | 2017-12-22 |
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| CN201310149571.7A Expired - Fee Related CN104122975B (en) | 2013-04-26 | 2013-04-26 | Computer apparatus and its electricity saving method |
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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 |
| CN1303035A (en) * | 1999-10-25 | 2001-07-11 | 三星电子株式会社 | Power controlling circuit possessing computer system with several power source management state |
| 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 |
-
2013
- 2013-04-26 CN CN201310149571.7A patent/CN104122975B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
| CN1303035A (en) * | 1999-10-25 | 2001-07-11 | 三星电子株式会社 | Power controlling circuit possessing computer system with several power source management state |
| 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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Granted publication date: 20171222 |