CN101075154A - Method and device for switching potency - Google Patents
Method and device for switching potency Download PDFInfo
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- CN101075154A CN101075154A CN 200610078396 CN200610078396A CN101075154A CN 101075154 A CN101075154 A CN 101075154A CN 200610078396 CN200610078396 CN 200610078396 CN 200610078396 A CN200610078396 A CN 200610078396A CN 101075154 A CN101075154 A CN 101075154A
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Abstract
A switching-over method of potency includes providing adjustable potency circuit being operated at frequency of specific threshold, judging out operation power source of adjustable potency circuit and regulating adjustable potency circuit to be operated at frequency of another specific threshold when said operation power source is greater than or less than specific-threshold quasi-bit region corresponded by said specific threshold.
Description
Technical field
The present invention relates to a kind of method and apparatus that reduces power consumption, and be particularly related to a kind of state according to load, usefulness with the circuit of control may command usefulness, and then the peripheral device of control foregoing circuit, to reach according to different demands, different usefulness is provided, reaches best power saving effect and can not influence system's operate as normal.
Background technology
In recent years,, make electronic product miscellaneous enter in the middle of our work and life along with the continuous progress of electronics technology, the particularly appearance of computer, very huge to our influence especially.The type of at present common PC (PC) comprises desktop computer and portable computer, and the type of portable computer also comprises notebook computer (Notebook PC), palm PC (Pocket PC) and panel computer (Tablet PC) etc.
In computer system, the power consumption of central processing unit (CPU) accounts for the major part of the power consumption of whole computer system.The power consumption part of central processing unit increases along with the increase of operating frequency and core voltage.For by battery-operated portable electric appts, as mobile phone, palm PC (personal digital assistant), digital camera, notebook computer or the like, the power supply requirement that reduces central processing unit is important problem.
On the known notebook computer, the software systems that a kind of manual adjustment central processing unit usefulness of design is arranged, these software systems provide the usefulness of multiple central processing unit to set, when user's needs are high-effect, can use manual mode to adjust this software, this software is the may command central processing unit just, makes it be operated in higher frequency so that higher usefulness to be provided.
Yet the mode of this manual adjustment, when notebook computer is idle, if the user forgets by these software systems, the frequency of operation of central processing unit is adjusted to lower frequency, except causing radiator fan, meeting maintains high rotating speed always, cause outside the noise, holding time of battery also can descend in addition.On the other hand, when if the user is moving arduous program,, the user frequency of operation of central processing unit is adjusted to higher frequency by these software systems if forgetting, the work of notebook computer is had some setbacks, influence the operate as normal of the operating system of notebook computer.
Summary of the invention
Purpose of the present invention is providing a kind of usefulness switching device shifter exactly, is used for a kind of state according to load, with the usefulness of the circuit of control may command usefulness, reaches best power saving effect and can not influence system's operate as normal.
Another purpose of the present invention provides a kind of usefulness changing method, is used to control the usefulness of may command usefulness circuit or the peripheral device of foregoing circuit, to reach according to different demands, provides different usefulness, further reaches less electricity consumption.
The present invention proposes a kind of usefulness switching device shifter, and this device comprises can adjust usefulness circuit, power supply unit and usefulness control device.Power supply unit is connected to can adjust the usefulness circuit, in order to provide working power to adjusting the usefulness circuit.The usefulness control device is connected to power supply unit and can adjusts the usefulness circuit.The usefulness control device comprises first threshold and corresponding interval, the accurate position of first threshold, and second threshold value and corresponding interval, the accurate position of second threshold value, the corresponding respectively frequency that can adjust the usefulness circuit of the first threshold and second threshold value wherein, the interval and accurate position of second threshold value, the accurate position of first threshold interval respectively to should adjustable whole usefulness circuit working working power when the first threshold and second threshold value.
According to the described usefulness switching device shifter of preferred embodiment of the present invention, above-mentioned usefulness control device comprises load monitoring circuit and usefulness adjusting gear.The load monitoring circuit connects power supply unit and the circuit that can adjust usefulness, in order to the size according to working power, produces power data.The usefulness adjusting gear connects the load monitoring circuit, it comprises M threshold data, wherein i threshold data is interval with i+1 the accurate position of the corresponding i threshold value of threshold data, when power data drops between i threshold data and i+1 the threshold data, control can be adjusted the circuit operation of usefulness in the i frequency, and M, i are natural number and the M＞i greater than 0.
According to the described usefulness switching device shifter of preferred embodiment of the present invention, the above-mentioned circuit of adjusting usefulness comprises central processing unit, central processing unit fan, clock generation circuit.In an embodiment, the usefulness adjusting gear is a South Bridge chip, and South Bridge chip receives the power data that the load monitoring circuit is exported with general input output interface.In addition, working power is working current for example in an embodiment, and the load monitoring circuit comprises comparator circuit and logical circuit.Comparator circuit connects power supply unit and the circuit that can adjust usefulness, receives the also size of judgment task electric current.Logical circuit connects comparator circuit, according to the big or small out-put supply data of working current.
According to the described usefulness switching device shifter of preferred embodiment of the present invention, above-mentioned usefulness control device comprises load monitoring circuit and usefulness adjusting gear.The load monitoring circuit connects power supply unit and the circuit that can adjust usefulness, it comprises M threshold data, wherein i threshold data is interval with i+1 the accurate position of the corresponding i threshold value of threshold data, when the size of working power drops between i threshold data and i+1 the threshold data, export i usefulness data.The usefulness adjusting gear connects the load monitoring circuit, and it is according to the i usefulness data that received, and control can be adjusted the circuit operation of usefulness in the i frequency, and M, i are natural number and the M＞i greater than 0.According to the described usefulness switching device shifter of preferred embodiment of the present invention, above-mentioned usefulness adjusting gear is implemented with South Bridge chip.South Bridge chip receives the power data that the load monitoring circuit is exported with general input output interface.In addition, working power for example is working current in an embodiment, and the load monitoring circuit comprises comparator circuit and logical circuit.Wherein comparator circuit connects power supply unit and the circuit that can adjust usefulness, receives working current, when working current drops between i threshold data and i+1 the threshold data, exports i adjustment data.Logical circuit connects comparator circuit, adjusts data according to i, exports i usefulness data.
The present invention proposes a kind of usefulness changing method, and the method comprises: provide and can adjust the frequency of usefulness circuit working in certain threshold level; Judgement can be adjusted the working power of usefulness circuit; When working power was higher or lower than the interval, the accurate position of a certain threshold level of certain threshold level correspondence, adjustment can be adjusted the usefulness circuit working in another certain threshold level frequency.According to the described usefulness changing method of preferred embodiment of the present invention, the step that above-mentioned judgement can be adjusted this working power of usefulness circuit comprises: the size according to working power provides power data.In addition when working power is higher or lower than the interval, the accurate position of a certain threshold level of certain threshold level correspondence, adjustment can be adjusted the usefulness circuit working and comprise in the step of another certain threshold level frequency: a plurality of threshold datas are provided, and wherein i threshold data～i+1 threshold data represents the accurate position of i certain threshold level interval; Corresponding threshold data provides a plurality of threshold frequencies; When power data dropped between i threshold data and i+1 the threshold data, control can be adjusted the circuit working of usefulness at the i threshold frequency, and wherein i is a natural number.
According to the described usefulness changing method of preferred embodiment of the present invention, the above-mentioned circuit of adjusting usefulness comprises central processing unit, central processing unit fan, clock generation circuit, and first characteristic frequency is the frequency of operation of central processing unit, the operating frequency of central processing unit fan, the clock frequency of clock generation circuit.In addition, working power is an example with working current or operating voltage in an embodiment.
According to the described usefulness changing method of preferred embodiment of the present invention, above-mentioned steps also comprises the type of monitoring this central processing unit; According to above-mentioned these threshold datas of the type decided of this central processing unit.
The present invention is because of adopting the state according to load, with the usefulness of the circuit of control may command usefulness, and then the peripheral device of control foregoing circuit, therefore can reach according to different demands, different usefulness is provided, finally reaches best power saving effect and can not influence system's operate as normal.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is an embodiment of the invention usefulness switching device shifter circuit block diagram.
Fig. 2 is an embodiment of the invention usefulness changing method process flow diagram.
Fig. 3 is the further enforcement circuit diagram of Fig. 1 usefulness switching device shifter.
The preferable process flow diagram of the usefulness changing method that Fig. 4 is implemented according to embodiment of the invention Fig. 2.
The further preferable process flow diagram of the usefulness changing method that Fig. 5 is implemented according to embodiment of the invention Fig. 4.
Fig. 6 is the further enforcement circuit diagram of Fig. 1 usefulness switching device shifter.Main element description of symbols main element description of symbols
101: can adjust the usefulness circuit
102: power supply unit
103: the usefulness control device
201～203,401～408,501,502: the step of the embodiment of the invention
301,601: the load monitoring circuit
302,602: South Bridge chip
303,603: Basic Input or Output System (BIOS)
3011,6011: comparator circuit
3012,6012: logical circuit
304,604: central processing unit
305,605: clock generator
306,606: fan
I101: load current indicator signal
J101: load current indicator signal
P101: working power
Embodiment
Fig. 1 is an embodiment of the invention usefulness switching device shifter circuit block diagram.Please refer to Fig. 1, this circuit comprises can adjust usefulness circuit 101, power supply unit 102 and usefulness control device 103.Power supply unit 102 provides working power P101 to adjusting usefulness circuit 101.Usefulness control device 103 comprises that the accurate position of the respectively corresponding first threshold of the first threshold and second threshold value is interval interval with the accurate position of second threshold value, the corresponding respectively frequency that can adjust the usefulness circuit of the first threshold and second threshold value wherein, the interval working power P101 when should adjustable whole usefulness circuit 101 being operated in first threshold in the accurate position of first threshold.The interval working power P101 when should adjustable whole usefulness circuit 101 being operated in second threshold value in the accurate position of second threshold value.
Fig. 2 is an embodiment of the invention usefulness changing method process flow diagram.For spirit of the present invention is described,, the process step of Fig. 2 embodiment usefulness changing method of the present invention is described with the circuit of Fig. 1 at this.Please at first, provide and to adjust usefulness circuit 101, and make this can adjust the frequency that usefulness circuit 101 is operated in a certain threshold level simultaneously with reference to Fig. 1 and Fig. 2, for example be operated in first threshold frequency (step 201).Next, utilization is connected the working power P101 size (step 202) that usefulness control device 103 judgements that can adjust between usefulness circuit 101 and the power supply unit 102 can be adjusted usefulness circuit 101.At last, when working power P101 is higher or lower than the interval, the accurate position of certain threshold level of certain threshold level correspondence, adjustment can be adjusted the usefulness circuit working in another certain threshold level frequency, for example when working power P101 was higher than interval, the accurate position of first threshold, adjustment can be adjusted the usefulness circuit working in the second certain threshold level frequency (step 203).
What deserves to be mentioned is, though usefulness switching device shifter and method have been depicted a possible mode in the foregoing description, but the person of ordinary skill in the field should know, each manufacturer is all different for the design of usefulness control device 103, and therefore application of the present invention is when being not restricted to the possible mode of this kind.In other words, so long as usefulness control device 103 comprises that first threshold is interval interval with the accurate position of second threshold value with the accurate position of the respectively corresponding first threshold of second threshold value at least, and making the change action of threshold frequency according to the working power P101 that can adjust usefulness circuit 101, has been to have met spiritual place of the present invention just.
Next will enumerate several embodiment so that the person of ordinary skill in the field can implement the present invention easily.
Please refer to Fig. 3, it is the preferable enforcement circuit diagram of the usefulness switching device shifter implemented according to embodiment of the invention Fig. 1.As shown in the figure, in the present embodiment, the usefulness control device 103 of Fig. 3 has comprised a load monitoring circuit 301, a South Bridge chip 302 and a Basic Input or Output System (BIOS) 303, and wherein load monitoring circuit 301 has comprised comparator circuit 3011 and logical circuit 3012.Can adjust usefulness device 101 just as an example with central processing unit 304, clock generator 305 and fan 306.A load current indicator signal I101 who also is correlated with load current at this embodiment at the working power P101 of Fig. 1 and supposes that this load current indicator signal I101 becomes big along with the increase of load current as an example in addition.The person of ordinary skill in the field should know, the usefulness the adjusted circuit 101 that the present invention carried still can be for example microprocessor, digitized video processor (DIP), digital signal processing circuit (DSP) or the like, so the present invention does not limit and can adjust usefulness circuit 101 and be above-mentioned central processing unit 304, clock generator 305 and fan 306.
In the present embodiment, load monitoring circuit 301 receives the load current indicator signal I101 of central processing unit, and comparator circuit 3011 and logical circuit 3012 send the digital signal of load current indicator signal I101 to South Bridge chip 302.South Bridge chip 302 receives above-mentioned digital signal by general input output interface (GPIO), and itself and threshold value 1～threshold value 4 made comparisons, suppose that the result who compares is that digital signal drops between threshold value 3～threshold value 4, expression load current indicator signal I101 drops between threshold value 3～threshold value 4, and the data that just will represent " load current indicator signal I101 drops between threshold value 3～threshold value 4 " are counted bus-bar (LPC BUS) and sent Basic Input or Output System (BIOS) 303 to by for example hanging down pin.
Next, Basic Input or Output System (BIOS) 303 receives above-mentioned data, according to these data, control central processing unit 304, clock generation circuit 305 and fan 306 are operated in pairing frequency between threshold value 3～threshold value 4, on behalf of load current indicator signal I101, the data after this supposes above-mentioned processing if drop between threshold value 3～threshold value 4, Basic Input or Output System (BIOS) 303 is just controlled central processing unit 304 and is operated in the 3rd threshold frequency, the frequency of 500MHz for example, when the data after the above-mentioned processing if represent load current indicator signal I101 to drop between threshold value 2～threshold value 3, Basic Input or Output System (BIOS) 303 is just controlled central processing unit 304 and is operated in second threshold frequency, the frequency of 1GHz for example, when the data after the above-mentioned processing if represent load current indicator signal I101 to drop between threshold value 1～threshold value 2, Basic Input or Output System (BIOS) 303 is just controlled central processing unit 304 and is operated in the 1st threshold frequency, for example the frequency of 1.5GHz.
When the load current of central processing unit 304 increases, load current indicator signal I101 rises, suppose that comparator circuit 3011 is that load current indicator signal I101 drops between threshold value 2～threshold value 3 with the comparative result of load current indicator signal I101 and above-mentioned threshold value 1～threshold value 4, on behalf of central processing unit 304, this kind situation just handling arduous program, if maintain this frequency work, the user may think that computer work has some setbacks, just can pass through as above-mentioned mechanism this moment, the frequency of operation of central processing unit 304 is risen to the 2nd threshold frequency 1GHz, and corresponding control fan and clock generation circuit, its frequency of operation is risen, and the user also so not can feel the situation that computer work has some setbacks.
Above-mentioned is with threshold value 1～threshold value 2, threshold value 2～threshold value 3, threshold value 3～threshold value 4 for example, interval, three accurate positions of threshold value as an example, the person of ordinary skill in the field should know, according to spirit of the present invention, the present invention still has the interval embodiment in the accurate position of 4～a plurality of threshold values, so the present invention is not as limit.
Please refer to Fig. 4, it is the preferable process flow diagram of the usefulness changing method implemented according to embodiment of the invention Fig. 2.Please refer to Fig. 4, at first provide working power to central processing unit (step 401).Next step provides the accurate positions of a plurality of threshold values interval (step 402).According to the size of working power, produce power data (step 403), for example in the foregoing description, the digital signal that logical circuit produced of load monitoring circuit 301.Following step the 404,406, the 408th, judgement power data are the intervals of dropping in the interval, the accurate position of above-mentioned three threshold values, the accurate position of which threshold value.When power data drops between the first threshold and second threshold value, then set central processing unit and be operated in the 1st threshold frequency (step 405).When power data drops between second threshold value and the 3rd threshold value, then set central processing unit and be operated in the 2nd threshold frequency (step 407).When power data drops between the 3rd threshold value and the 4th threshold value, then set central processing unit and be operated in the 3rd threshold frequency (step 409).
As a same reason, please refer to Fig. 5, it is the further preferable process flow diagram of the usefulness changing method implemented according to embodiment of the invention Fig. 4.Please refer to Fig. 4, this flow process and above-mentioned flow process difference have been " type (step 501) of monitoring central processing unit " step many, and step 402 also changes into according to a plurality of threshold datas of the type decided of central processing unit (step 502) in this flow process originally in addition.The method further can be according to different processor types, and it is interval to set the accurate position of different threshold values, to reach the ratio of optimum performance power saving.
Above-mentioned Fig. 3 embodiment, under spirit of the present invention, mode that still can Fig. 6 is implemented, and please refer to Fig. 6, and it is the preferable enforcement circuit diagram of the usefulness switching device shifter implemented according to embodiment of the invention Fig. 1.As shown in the figure, in the present embodiment, the usefulness control device 103 of Fig. 6 has comprised a load monitoring circuit 601, a South Bridge chip 602 and a Basic Input or Output System (BIOS) 603 equally, and wherein load monitoring circuit 601 has comprised comparator circuit 6011 and logical circuit 6012.Can adjust usefulness device 101 equally as an example with central processing unit 604, clock generator 605 and fan 606.A load current indicator signal J101 who also is correlated with load current at this embodiment at the working power P101 of Fig. 1 and supposes that this load current indicator signal J101 becomes big along with the increase of load current as an example in addition.
In the present embodiment, load monitoring circuit 601 receives the load current indicator signal J101 of central processing unit, comparator circuit 6011 is made comparisons this load current indicator signal J101 and its internal threshold 1～threshold value 4, size order in above-mentioned these threshold values of this hypothesis is threshold value 1＞threshold value 2＞threshold value 3＞threshold value 4, and hypothesis has been when just having begun to start, and load current indicator signal J101 drops between threshold value 3～threshold value 4.Next, logical circuit 6012 sends the digital signal of above-mentioned " load current indicator signal J101 drops between threshold value 3～threshold value 4 " to South Bridge chip 602.South Bridge chip 602 receives above-mentioned digital signal by general input output interface (GPIO), after handling, the data after handling is counted bus-bar (LPC BUS) by for example low pin send Basic Input or Output System (BIOS) 603 to.
Next, Basic Input or Output System (BIOS) 603 receives the data after the above-mentioned processing, according to the data after this processing, control central processing unit 604, clock generation circuit 605 and fan 606 are operated in pairing frequency between threshold value 3～threshold value 4, on behalf of load current indicator signal J101, the data after this supposes above-mentioned processing if drop between threshold value 3～threshold value 4, Basic Input or Output System (BIOS) 603 is just controlled central processing unit 604 and is operated in the 3rd threshold frequency, the frequency of 500MHz for example, when the data after the above-mentioned processing if represent load current indicator signal J101 to drop between threshold value 2～threshold value 3, Basic Input or Output System (BIOS) 603 is just controlled central processing unit 304 and is operated in second threshold frequency, the frequency of 1GHz for example, when the data after the above-mentioned processing if represent load current indicator signal J101 to drop between threshold value 1～threshold value 2, Basic Input or Output System (BIOS) 603 is just controlled central processing unit 604 and is operated in the 1st threshold frequency, for example the frequency of 1.5GHz.
When the load current of central processing unit 604 increases, load current indicator signal J101 rises, suppose that comparator circuit 6011 is that load current indicator signal J101 drops between threshold value 2～threshold value 3 with the comparative result of load current indicator signal J101 and above-mentioned threshold value 1～threshold value 4, on behalf of central processing unit 604, this kind situation just handling arduous program, if maintain this frequency work, the user may think that computer work has some setbacks, just can pass through as above-mentioned mechanism this moment, the frequency of operation of central processing unit 604 is risen to the 2nd threshold frequency 1GHz, and corresponding control fan and clock generation circuit, its frequency of operation is risen, and the user also so not can feel the situation that computer work has some setbacks.
Same, above-mentioned is with threshold value 1～threshold value 2, threshold value 2～threshold value 3, threshold value 3～threshold value 4 for example, interval, three accurate positions of threshold value as an example, the person of ordinary skill in the field should know, according to spirit of the present invention, the present invention still has the interval example in the accurate position of 4～a plurality of threshold values, so the present invention is not as limit.
In sum, the present invention is because of adopting the state according to load, usefulness with the circuit of control may command usefulness, and then the peripheral device of control foregoing circuit, therefore can reach according to different demands, different usefulness is provided, finally reaches best power saving effect and can not influence system's operate as normal.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, the person of ordinary skill in the field, without departing from the spirit and scope of the present invention; when change and the improvement that can do slightly, so the claim person of defining that protection scope of the present invention ought be looked is as the criterion.
Claims (11)
1. usefulness switching device shifter is characterized in that comprising:
Can adjust the usefulness circuit;
Power supply unit is connected to this and can adjusts the usefulness circuit, can adjust the usefulness circuit in order to working power to be provided to this; And
The usefulness control device, be connected to this power supply unit and this can adjust the usefulness circuit, this usefulness control device comprises first threshold and corresponding interval, the accurate position of first threshold, and second threshold value and corresponding interval, the accurate position of second threshold value, wherein this first threshold and this second threshold value be respectively to frequency that should adjustable whole usefulness circuit, and the interval and accurate position of this second threshold value, the accurate position of this first threshold is interval respectively to should this adjusting usefulness circuit working this working power when this first threshold and second threshold value.
2. usefulness switching device shifter according to claim 1 is characterized in that this usefulness control device comprises:
The load monitoring circuit connects this power supply unit and this can adjust the circuit of usefulness, in order to the size according to this working power, produces power data; And
The usefulness adjusting gear, connect this load monitoring circuit, comprise M threshold data, wherein i threshold data is interval with i+1 the accurate position of the corresponding i threshold value of threshold data, when this power data drops between i threshold data and i+1 the threshold data, control this circuit operation that can adjust usefulness in the i frequency, M, i are natural number and the M＞i greater than 0.
3. usefulness switching device shifter according to claim 1 is characterized in that this circuit that can adjust usefulness comprises central processing unit.
4. usefulness switching device shifter according to claim 1 is characterized in that this circuit that can adjust usefulness comprises clock generation circuit.
5. usefulness switching device shifter according to claim 2 is characterized in that this usefulness adjusting gear is a South Bridge chip, and this South Bridge chip receives this power data that this load monitoring circuit is exported with general input output interface.
6. usefulness switching device shifter according to claim 2 is characterized in that this working power comprises working current, and this load monitoring circuit comprises:
Comparator circuit connects this power supply unit and this can adjust the circuit of usefulness, receives and judge the size of this working current; And
Logical circuit connects this comparator circuit, exports this power data according to the size of this working current.
7. usefulness switching device shifter according to claim 1 is characterized in that this usefulness control device comprises:
The load monitoring circuit, connect this power supply unit and this can adjust the circuit of usefulness, comprise M threshold data, wherein i threshold data is interval with i+1 the accurate position of the corresponding i threshold value of threshold data, when the size of this working power drops between i threshold data and i+1 the threshold data, export i usefulness data; And
The usefulness adjusting gear connects this load monitoring circuit, and according to the i usefulness data that received, that controls this circuit that can adjust usefulness operates in the i frequency, and M, i are natural number and the M＞i greater than 0.
8. usefulness changing method is characterized in that comprising:
Provide and to adjust the usefulness circuit, be operated in the frequency of certain threshold level;
Judge that this can adjust the working power of usefulness circuit; And
When this working power is higher or lower than the interval, the accurate position of a certain threshold level of this certain threshold level correspondence, adjusts this and can adjust the usefulness circuit working in another certain threshold level frequency.
9. usefulness changing method according to claim 8 is characterized in that judging that this step that can adjust this working power of usefulness circuit comprises:
Size according to this working power provides power data.
10. usefulness changing method according to claim 9 is characterized in that being higher or lower than the accurate position of certain threshold level of this certain threshold level correspondence when interval when this working power, adjusts this and can adjust the usefulness circuit working and comprise in the step of another certain threshold level frequency:
A plurality of threshold datas are provided, and wherein i threshold data～i+1 threshold data represents the accurate position of i certain threshold level interval;
Corresponding above-mentioned these threshold datas provide a plurality of threshold frequencies; And
When this power data drops between i threshold data and i+1 the threshold data, control this circuit working that can adjust usefulness at the i threshold frequency, wherein i is a natural number.
11. usefulness changing method according to claim 10 is characterized in that also comprising:
Monitor the type of this central processing unit; And
According to above-mentioned these threshold datas of the type decided of this central processing unit.
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| CNB2006100783967A CN100549911C (en) | 2006-05-17 | 2006-05-17 | The usefulness switching device shifter |
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| CNB2006100783967A CN100549911C (en) | 2006-05-17 | 2006-05-17 | The usefulness switching device shifter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106406489A (en) * | 2015-07-28 | 2017-02-15 | Hgst荷兰公司 | Improved performance control of data storage arrays |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106406489A (en) * | 2015-07-28 | 2017-02-15 | Hgst荷兰公司 | Improved performance control of data storage arrays |
| CN106406489B (en) * | 2015-07-28 | 2021-06-08 | 西部数据技术公司 | Data storage system, data storage device and method for operating data storage system |
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| CN100549911C (en) | 2009-10-14 |
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