CN106708232B - A kind of electronic equipment and control method - Google Patents
A kind of electronic equipment and control method Download PDFInfo
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- CN106708232B CN106708232B CN201710114783.XA CN201710114783A CN106708232B CN 106708232 B CN106708232 B CN 106708232B CN 201710114783 A CN201710114783 A CN 201710114783A CN 106708232 B CN106708232 B CN 106708232B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/004—Error avoidance
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Abstract
The invention discloses a kind of electronic equipment and control method, the electronic equipment includes: CPU；The power control system being connect with the CPU；The output port connecting with the power control system, the output port are used to power for peripheral apparatus；Wherein, the power control system is used to generate CPU frequency reducing instruction in electronic equipment overload, judges whether CPU frequency reducing instruction meets first condition, if so, keeping the working frequency of CPU, reduces the output power of the output port.Inventive technique scheme will not reduce the performance of electronic equipment while for mobile terminal power supply.
Description
Technical field
The present invention relates to technical field of electronic equipment, more specifically, being related to a kind of electronic equipment and control method.
Background technique
With the continuous development of science and technology, laptop be more and more widely used in daily life and
In work, huge convenience is brought for daily life and work, becomes indispensable important of current people
Tool.
And popularizing with mobile terminals such as mobile phones, at least one USB Type-C interface is integrated on laptop
(abbreviation USB C interface), in order to be mobile terminal power supply or carry out data interaction with mobile terminal.
When USB Type-C interface is used to power for mobile terminal, initial output setting is the electric current output of 3A, is powered
Electric current is larger, at this point, may result in laptop if the CPU of laptop has biggish working frequency simultaneously
Overload, i.e. the actual discharge power of the power supply device of laptop can be greater than the maximum discharge power of power supply device.In order to keep away
Exempt to damage the power supply device of laptop, the prior art generally can by reduce laptop cpu frequency come
System total power is limited, and then leads to the reduced performance of laptop.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of electronic equipment and control method, technical solution of the present invention
While for mobile terminal power supply, the performance of electronic equipment will not be reduced.To achieve the goals above, the present invention provides as follows
Technical solution:
A kind of electronic equipment, the electronic equipment include:
CPU；
The power control system being connect with the CPU；
The output port connecting with the power control system, the output port are used to power for peripheral apparatus；
Wherein, the power control system is used to generate CPU frequency reducing instruction in electronic equipment overload, judges CPU
Whether frequency reducing instruction meets first condition, if so, keeping the working frequency of CPU, reduces the output power of the output port.
Preferably, in above-mentioned electronic equipment, the power control system includes:
The embedded controller being connect with the CPU；
The charge controlling chip being connect with the embedded controller；
The power delivery controller being connect with the embedded controller, the power delivery controller and power supply device with
And the output port connection；
When electronic equipment overload, the charge controlling chip is for generating the CPU frequency reducing instruction；The insertion
Formula controller is for judging whether CPU frequency reducing instruction meets first condition, if so, the working frequency of CPU is kept, described in reduction
The output power of output port.
Preferably, in above-mentioned electronic equipment, the embedded controller is used to judge to obtain in preset time described
Whether the number of CPU frequency reducing instruction is greater than preset threshold, if it is, meeting the first condition, if it is not, then being unsatisfactory for institute
State first condition.
Preferably, in above-mentioned electronic equipment, when CPU frequency reducing instruction is unsatisfactory for the first condition, the insertion
Formula controller is used for so that the CPU response CPU frequency reducing instruction, reduces the working frequency of the CPU, described in reducing
The power consumption of CPU.
Preferably, in above-mentioned electronic equipment, when CPU frequency reducing instruction meets first condition, the embedded control
After device processed is used to the output power of the output port being reduced to secondary output power by peak power output, described in judgement
Whether CPU frequency reducing instruction meets the first condition, if so, by the output power of the output port by the secondary output
Power is reduced to minimum output power；
Wherein, the sum of maximum power dissipation of the minimum output power and the CPU is less than the rated output function of power supply device
Rate.
Preferably, in above-mentioned electronic equipment, the embedded controller is also used to when the output port is not connected outer
If when equipment, the output setting of the output port is reverted to initial value.
The present invention also provides the control method of a kind of electronic equipment, the electronic equipment has for supplying for peripheral apparatus
The output port of electricity, the control method include:
Judge whether CPU frequency reducing instruction meets first condition；
If so, keeping the working frequency of CPU, the output power of the output port is reduced.
Preferably, described to judge whether the CPU frequency reducing instruction meets first condition and include: in above-mentioned control method
If the number of the CPU frequency reducing instruction obtained in preset time is greater than preset threshold, meet described first
Otherwise condition is then unsatisfactory for the first condition.
Preferably, in above-mentioned control method, when CPU frequency reducing instruction is unsatisfactory for the first condition, institute is responded
CPU frequency reducing instruction is stated, the working frequency of the CPU is reduced, to reduce the power consumption of the CPU.
Preferably, in above-mentioned control method, the output power for reducing the output port includes:
The output power of the output port is reduced to secondary output power by peak power output；
After judging that the output power of the output port is reduced to secondary output power by peak power output, the CPU
Whether frequency reducing instruction meets the first condition；
If so, the output power of the output port is reduced to minimum output power by the secondary output power；
Wherein, the sum of maximum power dissipation of the minimum output power and the CPU is less than the rated output function of power supply device
Rate.
Preferably, in above-mentioned control method, further includes:
When the output port is not connected with peripheral apparatus, the output setting of the output port is reverted into initial value.
As can be seen from the above description, in the control method and electronic equipment that technical solution of the present invention provides, when passing through
State electronic equipment be peripheral apparatus power supply when, power control system generated when the electronic equipment overload CPU frequency reducing instruct, sentence
Whether disconnected CPU frequency reducing instruction meets first condition, if so, keeping the working frequency of CPU, reduces the output of the output port
Power.As it can be seen that in technical solution of the present invention, if electronic equipment is that peripheral apparatus causes the electronic equipment to occur when powering
Load problem maintains the working frequency of CPU, by reducing the output power of output port, to guarantee the normal table operation of CPU.
Therefore, technical solution of the present invention will not reduce the performance of electronic equipment while for mobile terminal power supply.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram for another electronic equipment that the embodiment of the present invention is supplied to；
Fig. 3 is the flow diagram of the control method of a kind of electronic equipment provided in an embodiment of the present invention；
Fig. 4 is a kind of flow diagram for reducing output port output power method provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
With reference to Fig. 1, Fig. 1 is the structural schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention, the electronic equipment packet
It includes: CPU (central processing unit) 11；The power control system 12 being connect with the CPU11；It is connect with the power control system 12
Output port 13, the output port 13 be used for for peripheral apparatus power.
Wherein, the power control system 12 is used to generate CPU frequency reducing instruction, judgement in electronic equipment overload
Whether CPU frequency reducing instruction meets first condition, if so, keeping the working frequency of CPU11, reduces the defeated of the output port 13
Power out.
In the embodiment of the present invention, which can be laptop, integrated computer, desktop computer and TV
Machine etc. can connect the electronic equipment of other peripheral apparatus, and electronic equipment can be counted by output port 13 with peripheral apparatus
It powers according to interaction and for peripheral apparatus.Peripheral apparatus can be smart phone, tablet computer and intelligent wearable device etc..
The output port 13 can be USB Type-C interface.In the embodiment of the present invention, the electronic equipment has extremely
A few USB Type-C interface.
In the electronic equipment, the specific structure of power control system 12 can be as shown in Fig. 2, Fig. 2 be that the present invention is implemented
The structural schematic diagram of another electronic equipment that example is supplied to, in electronic equipment shown in Fig. 2, electronic equipment has power supply device
21, operating voltage is passed through by the power supply device 21.The power supply device 21 includes battery module and/or power adaptation
Device.The battery can be lithium battery, have voltage height, long service life, have a safety feature and charging rate fastly etc. it is excellent
Point.The power supply adaptor is connect with utility grid, and the alternating current of power grid 220V is converted to the work electricity of electronic equipment needs
Pressure.
Power control system 12 includes: the embedded controller (EC) 121 connecting with the CPU11；With it is described embedded
The charge controlling chip 122 that controller 121 connects；The power delivery controller 123 being connect with the embedded controller 121,
The power delivery controller 123 is connect with power supply device and the output port 13.
When electronic equipment overload, the charge controlling chip is for generating the CPU frequency reducing instruction；The insertion
Formula controller 121 is for judging whether the CPU frequency reducing instruction meets first condition, if so, the working frequency of CPU is kept,
Reduce the output power of the output port.
By taking laptop as an example, in the prior art, there is overload problem in laptop, after generating CPU frequency reducing instruction,
CPU responds CPU frequency reducing instruction at once, and CPU reduces working frequency in the preset duration for receiving CPU frequency reducing instruction, when this is default
After length, the working frequency of CPU need of work back to normal.If overload problem still has, CPU frequency reducing is generated again and is referred to
It enables, CPU responds CPU frequency reducing instruction again.It loops back and forth like this, until overload problem elimination does not regenerate CPU frequency reducing instruction.
The embedded controller 121 has detection device, is peripheral apparatus confession at least one described output port 13
When electric, which generates the first feedback signal.At this point, the embedded controller 121 is obtaining first feedback letter
After number, in case of overload problem, the CPU frequency reducing instruction is generated, and starts to judge whether the CPU frequency reducing instruction meets the
One condition.
When all output ports 13 are not powered for peripheral apparatus, which generates the second feedback signal.
At this point, the embedded controller 121 generates CPU frequency reducing after obtaining second feedback signal in case of overload problem
After instruction, CPU11 is instructed according to prior art response CPU frequency reducing, frequency reducing is carried out, with protection power source device 21.
It is different from existing CPU frequency reducing control in the embodiment of the present invention.Charge controlling chip 122 can be implemented to detect power supply
Device 21, when there is overload problem, the discharge power of power supply device 21 has been more than the maximum discharge power of setting, charge control core
Piece 122 can generate the CPU frequency reducing instruction.
The embedded controller 121 is specifically included when judging whether to meet first condition: the embedded controller
121 for judging whether the number of the CPU frequency reducing obtained in preset time instruction is greater than preset threshold, if it is, full
The foot first condition, if it is not, then being unsatisfactory for the first condition.Preset times are set as n times, preset time is M seconds.M,
N is positive integer, in the embodiment of the present invention, can not do and have to M, N according to the specific value of precision setting M, N of overload detection
Body limits.
The embedded controller 121 has counting circuit.The embedded controller 121 is obtaining first feedback
After signal, in case of overload problem, the embedded controller 121 starts after generating the CPU frequency reducing instruction for the first time
It counts, if generating the instruction of CPU frequency reducing described in n times in M seconds, shows that the currently practical discharge power of power supply device 21 is greater than
The maximum discharge power of power supply device 21.
When being that peripheral apparatus is powered by electronic equipment, if there is overload problem, it may be possible to the work at present frequency of CPU
The improper increase of rate, when testing hardware performance by hardware performance test software such as laptop, even if not set to peripheral hardware
Available electricity also results in the surge of CPU working frequency.
In view of the foregoing, when the embedded controller 121 starts counting, in M seconds, if the embedded control
The CPU frequency reducing instruction that device 121 processed generates is not more than N at this time, is unsatisfactory for the first condition at this time.It is unsatisfactory for first
The reason of part including but not limited to above-mentioned test hardware performance the case where.Then during this period, the embedded controller 121 is every
The primary CPU frequency reducing instruction is generated, CPU11 is instructed according to prior art response CPU frequency reducing, frequency reducing is carried out, with protection power source
Device 21.As it can be seen that when CPU frequency reducing instruction is unsatisfactory for the first condition, the embedded controller 121 is used for so that institute
It states CPU11 and responds the CPU frequency reducing instruction, the working frequency of the CPU is reduced, to reduce the power consumption of the CPU.
If in M seconds, if the CPU frequency reducing instruction that the embedded controller 121 generates is greater than N at this time,
Meet the first condition at this time, then during this period, the CPU frequency reducing of n times instructs before CPU11 is responded according to the prior art, carries out
Frequency reducing, with protection power source device 21, after the embedded controller 121 generates n-th CPU frequency reducing instruction, in the insertion
Under the control of formula controller 121, the working frequency of CPU11 is kept, reduces the output power of the output port 13.
In this way, controlling the output port 13 while keeping CPU11 performance and being set using lower output power as peripheral hardware
Standby charging does not influence the performance of CPU11, while can also charge for peripheral apparatus.
Optionally, in embodiments of the present invention, when CPU frequency reducing instruction meets first condition, the embedded control
Device 121 processed is for judging after the output power of the output port 13 is reduced to secondary output power by peak power output
Whether the CPU frequency reducing instruction meets the first condition, if so, by the output power of the output port 13 by described time
Grade output power is reduced to minimum output power.
Wherein, the sum of the minimum output power and the maximum power dissipation of the CPU11 are less than the specified defeated of power supply device 21
The sum of maximum power dissipation of power out, i.e., the described minimum output power and the CPU11 is less than the maximum discharge power of above-mentioned setting.
In this way, even if CPU11 is in the corresponding working frequency of maximum power dissipation, in addition preset minimum output power, will not exceed
The rated output power of power supply device 21, while guaranteeing CPU11 normal working frequency and powering for peripheral apparatus, so that
Battery is in non-hard service, avoids the damage to battery life.
After the output power of the output port 13 is reduced to secondary output power by peak power output, judge again
When whether the CPU frequency reducing instruction meets the first condition, the output power of deterministic process and the output port 13 is most
Deterministic process when big output power is identical.
After the output power of the output port 13 is reduced to secondary output power by peak power output, if overload
Problem is eliminated, then after being reduced to secondary output power at this time, while charging for peripheral apparatus, the working frequency of CPU11 is kept
It is constant.
After the output power of the output port 13 is reduced to secondary output power by peak power output, if overload
Problem is not eliminated, and the embedded controller 121 can be continuously generated the CPU frequency reducing instruction.At this point, overload problem may be by
Reduce that amplitude is smaller that overload problem is caused to still have in the output power of output port 13, it is also possible to which output port 13 reduces
After output power, since overload problem caused by charging for peripheral apparatus has been eliminated, overload problem at this time is due to CPU11
Caused by stage in the improper increase of frequency.In view of this, when CPU frequency reducing instruction meets first condition, it is described
Embedded controller 121 is opened after the output power of the output port 13 is reduced to secondary output power by peak power output
Begin to count, judge whether the number of the CPU frequency reducing obtained in preset time instruction is greater than preset threshold, if it is, full
The foot first condition, if it is not, then being unsatisfactory for the first condition.
Equally, when meeting first condition, the CPU frequency reducing of n times is instructed before CPU11 is responded according to the prior art, carries out frequency reducing,
After the embedded controller 121 generates n-th CPU frequency reducing instruction, under the control of the embedded controller 121, protect
The working frequency for holding CPU11 reduces the output power of the output port 13.At this point, demonstrate the need for output port 13 need into
One step reduces output power to guarantee the normal working frequency of CPU11.
The primary CPU frequency reducing instruction of the every generation of embedded controller 121, CPU11 when first condition is unsatisfactory for press
According to prior art response CPU frequency reducing instruction, frequency reducing is carried out.When the output power of the output port 13 is dropped by peak power output
Down to after secondary output power, overload problem caused by the improper increase of CPU11 working frequency that may be present can be avoided,
It is not necessarily to reduce the output power of output port 13 at this time, after CPU11 responds the instruction of CPU frequency reducing several times, overload problem can be automatic
It eliminates.
In the embodiment of the present invention, it is real that electric current can be exported by controller for the control of the output power of output port 13
It is existing.The corresponding output electric current of the peak power output of 13 initial setting up of output port can be the 3A of USB Type-C interface.
Optionally, the embedded controller 121 is also used to when the output port 13 is not connected with peripheral apparatus, by institute
The output setting for stating output port 13 reverts to initial value.As above-mentioned, when the output port 13 is USB Type-C interface,
Initial value is peak power output, and corresponding output electric current can be direct current 3A.The embedded controller 121 can pass through inspection
It surveys device and detects whether the output port 13 connects peripheral apparatus.
As can be seen from the above description, electronics provided in an embodiment of the present invention are being peripheral apparatus by output port 13
It can guarantee the normal working frequency of CPU while power supply, so that the performance of electronic equipment is unaffected, convenient for making for user
With.
Based on above-mentioned electronic equipment embodiment, another embodiment of the present invention additionally provides a kind of control method, for above-mentioned
Electronic equipment in embodiment.As above-mentioned, the electronic equipment has for the output port for peripheral apparatus power supply, the control
Method processed as shown in figure 3, Fig. 3 be a kind of electronic equipment provided in an embodiment of the present invention control method flow diagram, should
Control method includes:
Step S11: judge whether CPU frequency reducing instruction meets first condition.
In the step, if described, to judge whether CPU frequency reducing instruction meets first condition include: to obtain in preset time
The number of the CPU frequency reducing instruction taken is greater than preset threshold, then meets the first condition, otherwise, is then unsatisfactory for described the
One condition.Specific implementation may refer to above-mentioned electronic equipment embodiment associated description, and details are not described herein.
Step S12: if so, keeping the working frequency of CPU, the output power of the output port is reduced.
The method of the output power for reducing the output port is as shown in figure 4, Fig. 4 is provided in an embodiment of the present invention
A kind of flow diagram reducing output port output power method, this method comprises:
Step S21: the output power of output port is reduced to secondary output power by peak power output.
Step S22: after judging that the output power of output port is reduced to secondary output power by peak power output, CPU
Whether frequency reducing instruction meets first condition；
Step S24: if so, being reduced to minimum defeated by the secondary output power output power of the output port
Power out；
Wherein, the sum of maximum power dissipation of the minimum output power and the CPU is less than the rated output function of power supply device
Rate.
The specific implementation of method shown in Fig. 4 principle may refer to above-mentioned electronic equipment embodiment associated description, no longer superfluous herein
It states.
Step S13: if not, making CPU response CPU frequency reducing instruction, the working frequency of CPU is reduced, to reduce the CPU
Power consumption.
Optionally, control method described in the embodiment of the present invention further include: when the output port is not connected with peripheral apparatus,
The output setting of the output port is reverted into initial value.
In control method described in the embodiment of the present invention, when overload problem occurs, by gradually reducing the defeated of electronic equipment
The output power of exit port guarantees the normal working frequency of CPU, while guaranteeing is peripheral apparatus charging, ensure that CPU
Working performance.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For being controlled disclosed in embodiment
For method, since it is corresponding with electronic equipment disclosed in embodiment, so being described relatively simple, related place is referring to electricity
Sub- equipment corresponding part explanation.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of electronic equipment characterized by comprising
CPU；
The power control system being connect with the CPU；
The output port connecting with the power control system, the output port are used to power for peripheral apparatus；
Wherein, the power control system is used to generate CPU frequency reducing instruction in electronic equipment overload, judges CPU frequency reducing
Whether instruction meets first condition, if so, keeping the working frequency of CPU, reduces the output power of the output port；It is described
If judging whether the CPU frequency reducing instruction meets first condition includes: that the CPU frequency reducing obtained in preset time instructs
Number is greater than preset threshold, then meets the first condition, otherwise, be then unsatisfactory for the first condition.
2. electronic equipment according to claim 1, which is characterized in that the power control system includes:
The embedded controller being connect with the CPU；
The charge controlling chip being connect with the embedded controller；
The power delivery controller being connect with the embedded controller, the power delivery controller and power supply device and institute
State output port connection；
When electronic equipment overload, the charge controlling chip is for generating the CPU frequency reducing instruction；The embedded control
Device processed, if so, keeping the working frequency of CPU, reduces the output for judging whether CPU frequency reducing instruction meets first condition
The output power of port.
3. electronic equipment according to claim 2, which is characterized in that the embedded controller is for judging preset time
Whether the number of the CPU frequency reducing instruction of interior acquisition is greater than preset threshold, if it is, meet the first condition, if
It is no, then it is unsatisfactory for the first condition.
4. electronic equipment according to claim 2, which is characterized in that when CPU frequency reducing instruction is unsatisfactory for described first
Condition, the embedded controller is used for so that the CPU response CPU frequency reducing instruction, reduces the work frequency of the CPU
Rate, to reduce the power consumption of the CPU.
5. electronic equipment according to claim 2, which is characterized in that when CPU frequency reducing instruction meets first condition,
The embedded controller is used to the output power of the output port being reduced to secondary output power by peak power output
Afterwards, judge whether CPU frequency reducing instruction meets the first condition, if so, by the output power of the output port by
The secondary output power is reduced to minimum output power；
Wherein, the sum of maximum power dissipation of the minimum output power and the CPU is less than the rated output power of power supply device.
6. according to the described in any item electronic equipments of claim 2-5, which is characterized in that the embedded controller is also used to work as
When the output port is not connected with peripheral apparatus, the output setting of the output port is reverted into initial value.
7. the control method of a kind of electronic equipment, the electronic equipment has for the output port for peripheral apparatus power supply,
It is characterized in that, the control method includes:
Judge whether CPU frequency reducing instruction meets first condition；
If so, keeping the working frequency of CPU, the output power of the output port is reduced；
It is described to judge whether the CPU frequency reducing instruction meets first condition and include:
If the number of the CPU frequency reducing instruction obtained in preset time is greater than preset threshold, meet the first condition,
Otherwise, then it is unsatisfactory for the first condition.
8. control method according to claim 7, which is characterized in that when CPU frequency reducing instruction is unsatisfactory for described first
When condition, the CPU frequency reducing instruction is responded, the working frequency of the CPU is reduced, to reduce the power consumption of the CPU.
9. control method according to claim 7, which is characterized in that the output power packet for reducing the output port
It includes:
The output power of the output port is reduced to secondary output power by peak power output；
After judging that the output power of the output port is reduced to secondary output power by peak power output, the CPU frequency reducing
Whether instruction meets the first condition；
If so, the output power of the output port is reduced to minimum output power by the secondary output power；
Wherein, the sum of maximum power dissipation of the minimum output power and the CPU is less than the rated output power of power supply device.
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| CN108388331A (en) * | 2018-03-06 | 2018-08-10 | 合肥联宝信息技术有限公司 | I/O port control circuits and control method, electronic equipment and its control method |
| CN111522425A (en) * | 2019-02-02 | 2020-08-11 | 华为技术有限公司 | Power consumption control method of electronic equipment and electronic equipment |
| CN111240458B (en) * | 2020-01-02 | 2022-09-13 | 上海闻泰信息技术有限公司 | CPU frequency reduction method, system and portable computer |
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| CN104679213A (en) * | 2013-11-26 | 2015-06-03 | 英业达科技有限公司 | Server and server control method |
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