CN1499336A - Power supply circuit for prolonging standby time of mobile type computer and method and supplying power - Google Patents
Power supply circuit for prolonging standby time of mobile type computer and method and supplying power Download PDFInfo
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- CN1499336A CN1499336A CNA021503400A CN02150340A CN1499336A CN 1499336 A CN1499336 A CN 1499336A CN A021503400 A CNA021503400 A CN A021503400A CN 02150340 A CN02150340 A CN 02150340A CN 1499336 A CN1499336 A CN 1499336A
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- storer
- power supply
- sleep pattern
- power
- storage unit
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Abstract
When a portable computer enters into sleeping mode of storage device, the power supply for storage unit, which stores running mode of the portable computer, is switched from sleep mode to standby mode in order to shut down power source to storage in sleep mode supplied from main power circuit. Thus, power consumption of the portable computer is lowered so as to prolong the standby time.
Description
Technical field
The invention relates to a kind of feed circuit of portable computer, and particularly relevant for a kind of when portable computer enters the storer sleep pattern, can prolong feed circuit and the method for supplying power to of its standby time.
Background technology
At the epoch of information development, computer has become information and has handled indispensable instrument, and its importance to the mankind just constantly raises, thereby the also positive prolonged expansion of its quantity, and performance promotes especially apace.Along with the fast lifting of computer performance, cause its in-cycle work time lengthening, also make its consumed power also synchronously improve.In order to reduce the stand-by period of repeat switch machine, can reduce simultaneously the energy resource consumption when not using computer again, therefore develop and a kind of into stepwise configuration power management interface (Advanted Configuration and Power management Interface that is called, abbreviation ACPI) powder source management mode, it can be when desire interrupts using computer, operating state before interrupting is stored in storer (to call storer sleep pattern or ACPI S 3 sleep patterns in the following text) or the disk drive (to call disk drive sleep pattern or ACPI S 4 sleep patterns in the following text), and then close and do not use the power supply of part to make it enter sleep state, and when desiring to wake computer up and reuse, just fetch stored data by storing the storer or the disk drive that interrupt preceding operating state, to return back to the operating state before interrupting.
Please referring to shown in Figure 1, it is the feed circuit synoptic diagram that known portable computer cooperates storer sleep pattern and disk drive sleep pattern.Show among the figure that these feed circuit 100 comprise power-supply unit 110, change-over switch 120 and storage unit 130.Wherein, change-over switch 120 is to be controlled by storer sleep mode signal SUSB#, and the main power circuit 113 of power-supply unit 110 is then controlled by disk drive sleep mode signal SUSC#.When the portable computer of using these feed circuit 100 enters the storer sleep pattern, to set storer sleep mode signal SUSB#, to cut off 3.3V primary power V3.3M and other primary powers (not illustrating), and the 3.3V storer sleep pattern power supply V3.3STR that uses of the storage unit 130 of the operating state of the portable computer of retain stored before interrupting, and power supplys such as the power supply V5, the V2.5 that produce by main power circuit 113 equally and VRM.And when the portable computer of using these feed circuit 100 enters the disk drive sleep pattern, will set disk drive sleep mode signal SUSC#, to cut off power supply V5, V2.5, VRM and the storer sleep pattern power supply V3.3STR etc. of main power circuit 113.
So, known feed circuit 100 are when portable computer enters the storer sleep pattern, consumed power in the time of will entering the disk drive sleep pattern is high, though this problem is during by external power source at power-supply unit 110, the problem of having only energy resource consumption, yet, when the external power source Vin of power-supply unit 110 interrupts, for the sustainable operating state of keeping portable computer, normally switch by battery (not illustrating) and power, will cause the problem that its standby time significantly shortens this moment.
Summary of the invention
Supervise in this, the objective of the invention is to, a kind of feed circuit and method of supplying power to that prolongs the portable computer standby time is provided, it can significantly reduce the power consumption that portable computer enters the storer sleep pattern, and then prolongs its standby time.
For reaching above-mentioned and other purpose, the invention provides a kind of feed circuit that prolong the standby time, be applicable to a portable computer, when this movable type computer enters a storer sleep pattern, can set a storer sleep mode signal, it is characterized in that, these feed circuit comprise: a storage unit when should the movable type computer desiring to enter this storer sleep pattern in order to Cao, stores an operating state of this movable type computer, when waking this movable type computer up, use and reply this operating state with box lunch; One power-supply unit in order to a required storer sleep pattern power supply of this movable type computer and a power supply to be hit to be provided, and when this storer sleep mode signal is set, then cuts off this storer sleep pattern power supply; An and control module, couple this power-supply unit and this storage unit, in order to receiving this storer sleep mode signal, and when this storer sleep mode signal is set, the power supply of this storage unit is switched to this power supply to be hit by this storer sleep pattern power supply.
Wherein this control module comprises phase inverter and change-over switch.
Wherein this power-supply unit is to be supplied by an external power source, and when this external power source interrupts, and is changeablely powered by a battery.
Wherein this storer sleep pattern is ACPI S 3 sleep patterns.
Wherein this storage unit comprises a synchronous dynamic RAM.
Wherein this storer sleep pattern power supply and this power supply to be hit are 3.3V.
A kind of method of supplying power to that prolongs the standby time of the present invention, be applicable to a portable computer, this movable type computer has a storer sleep pattern power supply, and waits to hit a power supply and a storage unit, this storage unit is in order to store the operating state before this movable type computer enters a storer sleep pattern, it is characterized in that this method of supplying power to comprises the following steps:
Judge whether this movable type computer enters this storer sleep pattern;
When this movable type computer does not enter this storer sleep pattern, supply the power supply of this storage unit by this storer sleep pattern power supply; And
When this movable type computer enters this storer sleep pattern, the power supply of this storage unit is switched to this power supply to be hit by this storer sleep pattern power supply, and cut off this storer sleep pattern power supply.
By in the above-mentioned explanation as can be known, a kind of feed circuit and method of supplying power to that prolongs the portable computer standby time provided by the present invention, when portable computer enters the storer sleep pattern, power supply with storage unit switches to power supply to be hit by storer sleep pattern power supply, and cut off the storer sleep pattern power supply that the bigger main power circuit of consumed power provides, so can significantly reduce the power consumption that portable computer enters the storer sleep pattern, and then prolong its standby time.
Description of drawings
For above-mentioned and other purposes of the present invention, effect and advantage can be become apparent, hereinafter special with preferred embodiment, and conjunction with figs., be described in detail below, wherein:
Fig. 1 shows that a kind of known portable computer cooperates the feed circuit synoptic diagram of storer sleep pattern and disk drive sleep pattern; And
Fig. 2 is a kind of feed circuit synoptic diagram that prolongs the portable computer standby time that shows the preferred embodiment according to the present invention.
Embodiment
Please refer to shown in Figure 2ly, it is for according to a kind of feed circuit synoptic diagram that prolongs the portable computer standby time of a preferred embodiment of the present invention.Show among the figure that these feed circuit 200 that prolong the portable computer standby time comprise storage unit 230, power-supply unit 210 and control module 220.Wherein, storage unit 230 for example is to use Synchronous Dynamic Random Access Memory (Synchronous Dynamic Random Access Memory, be called for short SDRAM) or double data rate Synchronous Dynamic Random Access Memory (Double Data Rate Synchronous DynamicRandom Access Memory, be called for short DDR SDRAM), its required power supply is generally 3.3V, this storage unit 230 is to desire to enter when for example being the storer sleep pattern of ACPI S 3 when portable computer, be used for storing the operating state of portable computer, so that when waking portable computer up again, can reply it and enter the preceding operating state of storer sleep pattern.
Power-supply unit 210 as shown in Figure 2, normally receive an external power source Vin by converter (Adapter) 211, and be converted into the direct supply V19 of 19V, wait to hit power supply V3.3STD for what power supply to be hit (Standby Power) circuit 212 was converted to 3.3V once more, and be converted to power supply V5, V2.5, VRM and storer sleep pattern power supply V3.3STR etc. among the figure for main power circuit 213, to supply the circuit requirements of the each several part in the portable computer.And when external power source Vin interrupts, then switch the direct supply V19 that supplies 19V by battery (not illustrating) usually, to continue to keep the operating state of portable computer.
Wherein, wait to hit power supply V3.3STD because of being in order to the power supply of the warm start of portable computer to be provided, therefore about its specified only about usually 100mA, and being unable to supply the above working power of storage unit 230 required about 800mA, storer sleep pattern power supply V3.3STR then has the above rated current of 2A usually at least.Therefore, storage unit 230 required working powers must be supplied by storer sleep pattern power supply V3.3STR.And for can be when portable computer enters the storer sleep pattern, close the power supply supply of main power circuit 213, so as shown in the figure, the storer sleep mode signal SUSB# that can set when using portable computer to enter the storer sleep pattern, control main power circuit 213, outside the V5 that cuts off the electricity supply, V2.5, VRM and storer sleep pattern power supply V3.3STR etc., more via control module 220 power supplies, switch to by storer sleep pattern power supply V3.3STR and to wait to hit power supply V3.3STD storage unit 230.
As shown in Figure 2, control module 220 comprises phase inverter 223 and change-over switch 221 and 222, when storer sleep mode signal SUSB# does not set (state that is SUSB# is 1), change-over switch 222 is with conducting, change-over switch 221 then cuts off because of the output that receives phase inverter 223, so the time storage unit 230 be to power by storer sleep pattern power supply V3.3STR.Enter the storer sleep pattern and work as portable computer, and when setting storer sleep mode signal SUSB# (state that is SUSB# is 0), change-over switch 222 will cut off, change-over switch 221 is then because of receiving the output conducting of phase inverter 223, so the time storage unit 230 power supply switched to by storer sleep pattern power supply V3.3STR and waited to hit power supply V3.3STD, entered storer sleep pattern because of portable computer this moment, storage unit 230 is work requirements not, the current sinking of (actual measure only about 1mA) promptly is enough to keep the data of its preservation so an offer 4.8mA, waits to hit power supply V3.3STD and also is enough to use so the power supply of storage unit 230 switched to by storer sleep pattern power supply V3.3STR.Therefore, be main power circuit 213 to be closed, to save its power consumption via storer sleep mode signal SUSB#.Wherein, cutting off the purpose of change-over switch 222, is that power supply V3.3STD is reverse is sent to other circuit that reason storer sleep pattern power supply V3.3STR is supplied in order to prevent to wait to hit.
In above-mentioned explanation, can conclude a kind of method of supplying power to that prolongs the standby time, be applicable to a portable computer, this portable computer has storer sleep pattern power supply, waits to hit power supply and storage unit, and storage unit is the operating state that is used for storing before portable computer enters the storer sleep pattern.This method of supplying power to comprises the following steps:
Judge at first whether portable computer enters the storer sleep pattern;
When portable computer does not enter the storer sleep pattern, supply the power supply of storage unit by storer sleep pattern power supply;
And when portable computer entered the storer sleep pattern, then the power supply with storage unit switched to power supply to be hit by storer sleep pattern power supply, and cut off its storer sleep pattern power supply, to save its power consumption.
As foregoing circuit is applied on the portable computer, and the actual power consumption of portable computer when entering the storer sleep pattern that measure, can record the about 0.08W of its power consumption, known feed circuit are applied to identical portable computer and then need 0.6W approximately.The old friend, when the capacity of the battery that is applied to portable computer was identical, the feed circuit of portable computer standby time of the prolongation of preferred embodiment can prolong 7.5 times standby time at least according to the present invention.This is for keeping the crucial user of portable computer operating state, and apparently, the present invention can provide safer portable computer environment of operation.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; anyly have the knack of this operator; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is when looking accompanying being as the criterion that claim defines.
Claims (7)
1. feed circuit that prolong the standby time are applicable to a portable computer, when this movable type computer enters a storer sleep pattern, can set a storer sleep mode signal, it is characterized in that these feed circuit comprise:
One storage unit when should the movable type computer desiring to enter this storer sleep pattern in order to Cao, stores an operating state of this movable type computer, when waking this movable type computer up with box lunch, uses and replys this operating state;
One power-supply unit in order to a required storer sleep pattern power supply of this movable type computer and a power supply to be hit to be provided, and when this storer sleep mode signal is set, then cuts off this storer sleep pattern power supply; And
One control module, couple this power-supply unit and this storage unit, in order to receiving this storer sleep mode signal, and when this storer sleep mode signal is set, the power supply of this storage unit is switched to this power supply to be hit by this storer sleep pattern power supply.
2. feed circuit as claimed in claim 1 is characterized in that wherein this control module comprises phase inverter and change-over switch.
3. feed circuit as claimed in claim 1 is characterized in that, wherein this power-supply unit is to be supplied by an external power source, and when this external power source interrupts, and are changeablely powered by a battery.
4. feed circuit as claimed in claim 1 is characterized in that, wherein this storer sleep pattern is the ACPIS3 sleep pattern.
5. feed circuit as claimed in claim 1 is characterized in that, wherein this storage unit comprises a synchronous dynamic RAM.
6. feed circuit as claimed in claim 1 is characterized in that, wherein this storer sleep pattern power supply and this power supply to be hit are 3.3V.
7. method of supplying power to that prolongs the standby time, be applicable to a portable computer, this movable type computer has a storer sleep pattern power supply, and waits to hit a power supply and a storage unit, this storage unit is in order to store the operating state before this movable type computer enters a storer sleep pattern, it is characterized in that this method of supplying power to comprises the following steps:
Judge whether this movable type computer enters this storer sleep pattern;
When this movable type computer does not enter this storer sleep pattern, supply the power supply of this storage unit by this storer sleep pattern power supply; And
When this movable type computer enters this storer sleep pattern, the power supply of this storage unit is switched to this power supply to be hit by this storer sleep pattern power supply, and cut off this storer sleep pattern power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021503400A CN1499336A (en) | 2002-11-05 | 2002-11-05 | Power supply circuit for prolonging standby time of mobile type computer and method and supplying power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA021503400A CN1499336A (en) | 2002-11-05 | 2002-11-05 | Power supply circuit for prolonging standby time of mobile type computer and method and supplying power |
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| Publication Number | Publication Date |
|---|---|
| CN1499336A true CN1499336A (en) | 2004-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA021503400A Pending CN1499336A (en) | 2002-11-05 | 2002-11-05 | Power supply circuit for prolonging standby time of mobile type computer and method and supplying power |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340994C (en) * | 2004-06-11 | 2007-10-03 | 宏碁股份有限公司 | Method for monitoring electric power state of computer system |
| CN101221463B (en) * | 2007-01-11 | 2012-12-26 | 三星电子株式会社 | Battery module, computer system and power supply method thereof |
-
2002
- 2002-11-05 CN CNA021503400A patent/CN1499336A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100340994C (en) * | 2004-06-11 | 2007-10-03 | 宏碁股份有限公司 | Method for monitoring electric power state of computer system |
| CN101221463B (en) * | 2007-01-11 | 2012-12-26 | 三星电子株式会社 | Battery module, computer system and power supply method thereof |
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