CN103809728B - Electronic device and power saving method thereof - Google Patents
Electronic device and power saving method thereof Download PDFInfo
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- CN103809728B CN103809728B CN201310425302.9A CN201310425302A CN103809728B CN 103809728 B CN103809728 B CN 103809728B CN 201310425302 A CN201310425302 A CN 201310425302A CN 103809728 B CN103809728 B CN 103809728B
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Abstract
The invention discloses an electronic device and a power saving method thereof. The power-saving method of the electronic device is to obtain the backlight brightness value of the display first. And then, generating a brightness adjusting value according to the backlight brightness value and the lowest brightness setting value of the indicator lamp, wherein the brightness adjusting value is greater than or equal to the lowest brightness setting value. And finally, adjusting the brightness of the indicator lamp according to the brightness adjustment value.
Description
Technical field
The present invention is relevant electronic installation, particularly a kind of electronic installation and electricity saving method thereof.
Background technology
It is said that in general, the main element of electric power that consumes is except core parts such as microprocessor in electronic installation
(micro controller), chipset, radiator fan, peripheral driver device are (such as hard disk drive and light
Drive) and backlight module outside, also have the element many times wanted such as showing the running shape of electronic product
The display lamp etc. of state, all can consume electric power.
Based on energy-conservation with reduce power consumption purpose, electronics manufacturer have been for most mainly
Element develops the auto sleep system of different power conservation techniques, such as notebook computer, central processing unit
Power saving operating mode, and fans drive technology etc..
Additionally, it is known that the electronic installation with display be generally of manual or automatic adjustment backlight mould
The function of the light-source brightness of block.As a example by notebook computer, when using under battery mode, notebook electricity
Brain can reduce the light-source brightness of backlight module automatically to reduce the consumption of electric power.
Currently there is the electronic product such as notebook computer and panel computer of display (Display), and
Display lamp will be set in order to show the operating state of electronic product.Based on energy-conservation and minimizing power consumption
Purpose, uses light emitting diode (LED) as the light-emitting component of display lamp, this kind of display lamp foundation more
The kind of electronic product at least one have several at most, as a example by notebook computer, typically have a. power supply
Display lamp (Power), b. battery status display lamp (Battery), c. numeral keys locking display lamp (NUM.
Lock), d. caps lock display lamp (CAP.Lock), e. radio network interface display lamp (WLAN.),
F. hard disk drive action indicator (HDD.) and g. local area network interface display lamp (LAN.), can be many
Reach 7 LED lights, be in use mould with these 5 display lamps of a. to e. at notebook computer the most again
The state that during formula, sustainable perseverance is bright.In this, it is assumed that use blue light or white light LEDs display lamp,
The power consumption of 500mW (5V × 20mA × 5) is about had under use pattern.
From the foregoing, notebook computer is under use pattern, the running of LED light may be up to 500
The power consumption of mA, if by dynamic hard disk drive action indicator and local area network interface display lamp
Consumption electric power count in the lump, then can consume more electric power.About 5W is pursued at current notebook-computer system
Power consumption target under, only the power consumption of LED light i.e. accounts for about under worst situation
20%.
Summary of the invention
In view of this, it is an object of the invention to propose a kind of electronic installation and electricity saving method thereof, permissible
Automatically the brightness of display lamp is adjusted, to reduce electricity according to the brightness of the back light of the display of electronic installation
The consumption of power.
The electricity saving method of the electronic installation of one embodiment of the invention, comprises the following steps: to obtain display
Backlight brightness values；Minimum brightness setting value according to backlight brightness values with display lamp produces brightness adjustment value,
Brightness adjustment value is more than or equal to minimum brightness setting value；And adjust the bright of display lamp according to brightness adjustment value
Degree.
In one embodiment of this invention, brightness adjustment value is based on current backlight brightness values and accounts for maximum
The ratio of backlight brightness values, corresponding between minimum brightness setting value and the maximum brightness value of display lamp.
In one embodiment of this invention, it is provided that operation interface, in order to receive minimum brightness setting value.
The electronic installation of one embodiment of the invention, including: display, there is backlight module, backlight module
There is backlight brightness values；At least one display lamp；Brightness controller, is electrically connected to backlight module and instruction
Lamp, brightness controller produces brightness adjustment according to the minimum brightness setting value of backlight brightness values with display lamp
Value, brightness adjustment value is more than or equal to minimum brightness setting value, and brightness controller is according to brightness adjustment value control
The brightness of display lamp processed.
In one embodiment of this invention, brightness adjustment value is based on current backlight brightness values and accounts for maximum
The ratio of backlight brightness values, corresponding between minimum brightness setting value and the maximum brightness value of display lamp.
In one embodiment of this invention, electronic installation also comprises operation interface, and operation interface is electrically connected to
Brightness controller, in order to receive minimum brightness setting value.
In one embodiment of this invention, electronic installation also comprises chipset, chipset electrical connection backlight mould
Block and brightness controller, in order to control the backlight brightness values of backlight module.
In one embodiment of this invention, brightness controller is embedded controller.
In one embodiment of this invention, brightness controller comprises: integrator, is electrically connected to display,
And backlight brightness values integration is output as corresponding voltage signal；Frequency generator, is electrically connected to integration
Device；And comparator, it being electrically connected to integrator and frequency generator, comparator compares what integrator was exported
Voltage signal and minimum brightness setting value, when voltage signal is more than minimum brightness setting value, display lamp connects
Receive the brightness adjustment value being equal to backlight brightness values, when voltage signal is less than minimum brightness setting value, frequently
The brightness adjustment value of the corresponding minimum brightness setting value of rate generator output is to display lamp.
In one embodiment of this invention, electronic installation also comprises embedded controller, embedded controller
Transmit and trigger signal and give frequency generator, and coordinate the fiducial value of voltage signal and minimum brightness setting value,
And enable or closedown frequency generator.
The electronic installation of the present invention and electricity saving method thereof can be according to the current backlights of the display of electronic installation
The minimum brightness setting value of brightness and display lamp adjusts the brightness of display lamp automatically, and thus electronic installation is able to
Energy-conservation, reduce power consumption and extend battery flying power.
Hereinafter describing detailed features and the advantage of the present invention the most in detail, its content be enough to make
The technology contents of any present invention of skilled in the art realises that also is implemented according to this, and according to this specification institute
Content, claims and the accompanying drawing disclosed, any skilled person readily understands that the present invention
Relevant purpose and advantage.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of an embodiment of the electronic installation of the present invention；
Fig. 2 is the flow chart of the electricity saving method of the electronic installation of one embodiment of the invention；
Fig. 3 is the functional block diagram of an application examples of the electronic installation of the present invention；
Fig. 4 is the functional block diagram of the Another Application example of the electronic installation of the present invention；
Fig. 5 is the flow chart of the electricity saving method of the electronic installation of another embodiment of the present invention；
Fig. 6 is the block chart of the first embodiment operating interface in the electronic installation that the present invention is described；
Fig. 7 is the block chart of the second embodiment operating interface in the electronic installation that the present invention is described；
Fig. 8 is the block chart of the 3rd embodiment operating interface in the electronic installation that the present invention is described；And
Fig. 9 is another embodiment schematic diagram of the electronic installation of the present invention.
Detailed description of the invention
Proposing a kind of electronic installation and electricity saving method thereof in one embodiment of the invention, electronic installation has finger
Showing lamp 20 and display 10, display 10 has backlight module 11, and the method for the present invention can be according to electricity
The brightness of the backlight module 11 of the display 10 of sub-device adjusts the brightness of display lamp 20 automatically to reduce
The consumption of electric power；Embodiment division as after.
Refer to Fig. 1, for the functional block diagram of an embodiment of the electronic installation of the present invention.Electronic installation
Including display 10, display lamp 20 (such as LED light), brightness controller 30 and chipset C
(such as central processing unit).Display 10 has to provide the backlight module 11 of back light.Brightness
Controller 30 and chipset C are electrically connected to backlight module 11, and brightness controller 30 is electrically connected to display lamp
20。
The brightness of the back light of the backlight module 11 of display 10 is controlled by chipset C, that is
Chipset C controls the brightness power of back light by transmitting backlight brightness values BL.Such as work as electronic installation
Being under battery saving mode (such as battery mode), chipset C then can send backlight brightness values BL and control
Backlight module 11, and then the luminance-reduction (will its brightness dim) of the back light by backlight module 11,
To save battery electric power.
And reduce in order to the brightness enabling display lamp 20 is Tong Bu with the backlight illumination of backlight module 11, core
Backlight brightness values BL is sent to brightness controller 30 by sheet group C, and brightness controller 30 is bright according to backlight
The minimum brightness setting value of angle value BL and display lamp produces brightness adjustment value, brightness adjustment value more than or etc.
In minimum brightness setting value, brightness controller 30 adjusts the brightness of display lamp 20 according to brightness adjustment value.
In Fig. 1, brightness adjustment value be pulse-width modulation signal PWM (Pulse Width Modulation,
PWM), but be not limited.Backlight brightness values BL and brightness adjustment value can positive correlations each other.Change speech
It, when backlight brightness values BL increases, then brightness adjustment value also can increase, when backlight brightness values BL
When downgrading, then brightness adjustment value also can downgrade.
But, because display lamp 20 is the operating state reminding user electronic installation, if display lamp
20 according to backlight module 11 cause because electric power is not enough complete dark time, then cannot warn user electronic installation
It is in electric hypodynamic situation.Therefore, brightness adjustment value produced by brightness controller 30 must be more than
Or equal to representing minimum brightness setting value LL of display lamp 20.Wherein, minimum brightness setting value LL can
It is stored in brightness controller 30, and setting (describing in detail as rear) can be inputted by user voluntarily, or one opens
The most thus system that begins determines and constant (i.e. the former setting value of system).
Base this, do not allow to be zero due to the brightness of display lamp 20, therefore bright produced by brightness controller 30
Degree adjusted value is based on current backlight brightness values BL of backlight module 11 and accounts for backlight brightness values BL of maximum
Ratio, and the high-high brightness of minimum brightness setting value LL and the display lamp 20 corresponding to display lamp 20
Between value.
Wherein, if backlight brightness values BL, minimum brightness setting value LL and brightness adjustment value are believed with digitized
Breath represents, then these a little numerical value optional with percentage ratio (as 100% represents high-high brightness, 0% represents the most secretly),
Fixed interval numeral (such as the darkest 0～100 all light) or the mode of bar chart are implemented.In addition, backlight
Brightness value BL, minimum brightness setting value LL and brightness adjustment value can also represent by the signal of telecommunication, if with telecommunications
Number represent, the design of its visual hardware circuit and select with in current signal or pulse-width modulation signal PWM
The mode of dutycycle (duty cycle) implement.
For example, if backlight brightness values BL, minimum brightness setting value LL and brightness adjustment value are with percentage
Than when representing, display lamp brightness can be with equation " brightness (the %)=minimum brightness setting value of display lamp
(%) backlight brightness values (%) of+(100-minimum brightness setting value) × current " represent.Such as notebook electricity
The minimum brightness setting value of the display lamp of brain is 20%, then can be average by the display lamp brightness of 20%～100%
Correspond to the backlight illumination of 0%～100%.In this, when notebook computer enters battery mode, it is assumed that when
Before backlight brightness values be adjusted to 50%, then brightness adjustment value will be adjusted to 20%+ (100-20) ×
50%=60%.If therefore as a example by five display lamps, then power consumption 500mW × (1-can be reduced
60%)=200mW, and it is able to flying power that is energy-conservation and that extend battery.
Refer to Fig. 2, for the flow chart of electricity saving method of the electronic installation of one embodiment of the invention, including
The following step:
Step A01: obtain the backlight brightness values that display is current.
Step A02: produce brightness adjustment value according to the minimum brightness setting value of backlight brightness values with display lamp,
Brightness adjustment value is more than or equal to minimum brightness setting value.
Step A03: adjust the brightness of display lamp according to brightness adjustment value.
The power conservation techniques means of detailed electrical device are identical with above-mentioned Fig. 1, therefore not in this to go forth.Former
Then go up, be suitable for the electronic installation of the electricity saving method of electronic installation of the present invention, can be notebook computer, flat board
Computer, portable electronic installation therein any one, but the present invention is non-as limit.This electron-like fills
Put and there is display lamp, display and microprocessor (microprocessor).Display lamp is to show electricity
The operating state of sub-device.Display has back light.Microprocessor can perform the step of the inventive method
The rapid power supply for managing display lamp.Here, microprocessor can be realized by firmware techniques, it is achieved mode
One of can perform the software of the invention described above method step in microprocessor write, so that electronic installation
It is able to energy-conservation, minimizing power consumption and extends the flying power of battery.
Fig. 3 and Fig. 4 is the functional block diagram of the application examples of the electronic installation of the present invention.In the present embodiment,
Electronic installation, as a example by notebook computer, is not limited.Fig. 3 and Fig. 4 is roughly the same with Fig. 1, no
Existing together and be, the brightness controller 30 described in Fig. 1 utilizes embedded controller EC (Embedded
Controller, EC) implement, and backlight brightness values BL and brightness adjustment are worth with pulse-width modulation signal PWM
Realize, and minimum brightness setting value can be stored in the internal memory M of embedded controller EC of notebook computer
In, but the present invention is not limited.
Refer to the system status information S that Fig. 3, embedded controller EC are provided according to chipset C
Control corresponding display lamp 20 light or extinguish (On/Off), such as, press the capitalization of lower keyboard at user
Caps lock display lamp (CAP.Lock) is lighted during locking key.
For example, when lighting caps lock display lamp 20, the brightness of caps lock display lamp 20 can
Backlight illumination synchronization control with backlight module 11.That is, notebook computer is will by chipset C
Backlight brightness values BL represented with pulse-width modulation signal PWM is sent to backlight module 11, and is controlled
System and the brightness of adjustment back light.Backlight brightness values BL is also transmitted and gives embedded Control by chipset C
Device EC, embedded controller EC set according to the minimum brightness of backlight brightness values BL with display lamp 20
Value produces brightness adjustment value, and controls caps lock display lamp 20 with pulse-width modulation signal PWM.Brightness
The production method of adjusted value mode as described in Fig. 1, therefore not in this to go forth.
Referring to Fig. 4, it is with the application examples difference of Fig. 3, the chipset C of notebook computer
It is electrically connected to backlight module 11 by embedded controller EC.
Backlight brightness values BL is sent to embedded controller EC, embedded controller EC by chipset C
Pulse-width modulation signal PWM utilizing corresponding backlight brightness values BL controls the back light of backlight module 11
Brightness.Further, minimum bright according to backlight brightness values BL and display lamp 20 of embedded controller EC
Degree setting value produces brightness adjustment value, to adjust the brightness of display lamp 20.It is to say, backlight module
11 are all controlled by embedded controller EC with the brightness of display lamp 20.
Complex chart 3 is with described in Fig. 4, and backlight module 11 and display lamp 20 can be synchronously indivedual by chipset
C and embedded controller EC controls, or, backlight module 11 and display lamp 20 can synchronize by embedding
Formula controller EC controls, and makes backlight illumination interlock with the brightness of display lamp 20.Under battery mode,
Notebook computer can utilize this mode automatically to reduce the brightness of back light and display lamp, to reduce electric power
Consume.
Referring to Fig. 5, it is the flow chart of electricity saving method of electronic installation of another embodiment of the present invention,
User can sets itself minimum brightness setting value, comprise the following steps:
Step B01: provide operation interface, in order to receive minimum brightness setting value.
Step B02: store minimum brightness setting value.
Step B03: obtain the backlight brightness values of display.
Step B04: produce brightness adjustment value according to the minimum brightness setting value of backlight brightness values with display lamp,
Brightness adjustment value is more than or equal to minimum brightness setting value.
Step B05: adjust the brightness of display lamp according to brightness adjustment value.
In order to have a clear understanding of the flow chart shown in Fig. 5, at this with the side shown in Fig. 6,7 and Fig. 8
Block figure makees narration in detail.Fig. 6,7 and Fig. 8 are the merit of other enforcement aspect of the electronic installation of the present invention
Can block chart.In this, electronic installation can include the operation interface 40 being electrically connected to brightness controller 30.
Operation interface 40 can be software operation interface and/or hardware operation interface.Software operation interface is permissible
The display of electronic installation it is presented in, such as at the window of operating system of notebook computer by software engineering
Operation interface 40 is provided under choma border.
Hardware operation interface can arrange physical button in electronic installation.If using hardware operation interface 40,
Aforementioned with firmware techniques realize brightness controller 30 embedded controller EC can by basic output/
Input chip (BIOS) and chipset C obtain user and pass through the minimum bright of hardware operation interface setting
Degree setting value LL.
As shown in Figure 6, the electronic installation of its explanation present invention operates the first embodiment of interface.Operation
Interface 40 comprises adjustment modes and sets interface and brightness adjustment interface.Adjustment modes sets interface and can include
Pattern 81 with an automatic light meter and hand-operating light pattern 82.Brightness adjustment interface can include that brightness increases button 41a
Button 42a is downgraded with brightness.
If user selects pattern 81 with an automatic light meter, brightness controller 30 can be first by set in advance minimum
Brightness settings LL reads out, and is stored in the internal memory of brightness controller 30 or electronic installation.Work as the back of the body
The brightness of the back light of optical module 11 by chipset C controlled time, brightness controller 30 controls simultaneously
The brightness of display lamp 20, even if also backlight illumination interlocks raising with the brightness of display lamp 20 or reduces.
If user selects hand-operating light pattern 82, then it represents that user can be according to oneself quick to brightness
Sensitivity, the most directly adjusts the brightness of display lamp 20.It is to say, in order in battery saving mode
Declining low power consumption, user may select hand-operating light pattern 82, the brightness of display lamp 20 is turned down
(secretly).Therefore, after selecting hand-operating light pattern 82, the brightness of backlight illumination and display lamp 20 is the most not
Can synchronize to interlock, user needs to adjust the most in a manual manner the brightness of display lamp 20.
As it is shown in fig. 7, the electronic installation of its explanation present invention operates the second embodiment of interface.Operation
Interface 40 comprises minimum brightness and sets interface.Minimum brightness sets interface and comprises and increase button 41, downgrade
Button 42, minimum brightness setting value field 43 and minimum brightness configuration switch 44.Increase button 41 and
Downgrade button 42 can also realize by knob, and minimum brightness configuration switch 44 can realize with button.
Minimum brightness setting value field 43 directly can be set minimum brightness setting value LL by user, and will
Minimum brightness setting value LL stores to brightness controller 30.It is noted that minimum brightness setting value
LL must not make display lamp 20 complete dark (i.e. brightness is equal to zero).
When minimum brightness configuration switch 44 not actuated (disable), minimum brightness sets value LL and writes from memory as one
Recognize value, and when minimum brightness configuration switch 44 starts (enable), user can be according to oneself to bright
The sensitivity of degree, utilizes and increases button 41, downgrades button 42 or minimum brightness setting value field 43 sets
The minimum brightness determining display lamp 20 sets value LL.
Refer to Fig. 8, illustrate the electronic installation of the present invention operates the 3rd embodiment of interface.In Fig. 8
Operation interface 40 be the operation interface combining Fig. 6 and Fig. 7, that is the operation interface of the 3rd embodiment
40 is by pattern 81 with an automatic light meter, hand-operating light pattern 82 and the whole knot of minimum brightness configuration switch 44
Being combined in same operation interface 40, its mode of operation has been specified in the first embodiment and the of operation interface
Two embodiments, therefore do not repeat them here.
The embodiment at aforesaid operations interface 40 is only one of many feasible embodiments, the ripest
Know this technical field technical staff after understanding the above-mentioned embodiment of the present invention and technological means, should
Can implement even to remake equivalent change person according to this and must belong to the technical scope of the present invention.
Fig. 9 is the another kind of embodiment structure of the electronic installation of the present invention, realizes electricity at this with hardware means
Sub-device.In this, available intednsity circuit 50 is implemented if Fig. 1 and Fig. 6 is to the brightness as described in 8
Controller 30.
Referring to Fig. 9, electronic installation includes display 10, display lamp 20, operation interface 40, brightness
Control circuit 50, chipset C and embedded controller EC.Intednsity circuit 50 comprises integrator
51, comparator 52, frequency generator 53 (clock generator) and door 54 (AND Gate),
One switch element SW1, second switch element SW2, and the 3rd switch element SW3.Embedded Control
Device EC utilizes chipset C to be electrically connected with operation interface 40, and intednsity circuit 50 is with embedded
Controller EC is electrically connected with.
Embedded controller EC can send a control signal according to the operation content at operation interface 40.Embed
The internal memory M of formula controller EC can store default minimum brightness setting value LL.
The input of integrator 51 is connected with the source of backlight brightness values BL, in order to by backlight brightness values
BL integration and transfer corresponding voltage signal a to, will the accounting for of pulse-width modulation signal of backlight brightness values BL
Empty ratio transfers corresponding voltage signal a to.
Comparator 52 is in order to the voltage signal a exported by integrator 51 and minimum brightness setting value LL ratio
Relatively, and according to result of the comparison the first triggering signal b is produced.
Output enable (output enable) pin of frequency generator 53 receives the second anti-phase triggering letter
NumberThus, the second anti-phase triggering signalIt is able to enable or closes the defeated of frequency generator 53
Go out (enable/disable) action.Frequency generator 53 action when enable, and set according to minimum brightness
Definite value LL produces pulse-width modulation signal PWM with corresponding dutycycle.
Pulse-width modulation signal PWM exports via the outfan of the first switch element SW1, wherein first opens
Close element SW1 open (turn off, be i.e. not turned on) according to the first triggering signal b control execution and close (turn
On, i.e. conducting) action.
The input of second switch element SW2 is connected with the source of backlight brightness values BL, and second switch
Element SW2 is according to the first anti-phase triggering signalControl, and perform and the first switch element SW1 phase
The action of anti-open and close, and then by backlight brightness values BL via the outfan of second switch element SW2
Output.
With door 54 (AND Gate), there is first input end 541 and the second input 542.First input
End 541 connection the first switch element SW1 and the outfan of second switch element SW2.Second input
542 are connected with embedded controller EC.
The second anti-phase triggering signal is received with the output enable of door 54 (output enable) pin
Thus, second trigger signal OE and be able to enable or close the output of (enable/disable) and door 54 and move
Make.
The display lamp 20 that the input reception embedded controller EC of the 3rd switch element SW3 sends
Keying signal on/off.3rd switch element SW3 triggers signal OE according to second and controls the dynamic of open and close
Make.
Keying signal on/off is the signal that embedded controller EC controls that display lamp 20 out of the ordinary opens and closes, as
Under open state, power supply indicator 20 is bright, i.e. keying signal on, and for example cancels caps lock display lamp
When 20, i.e. keying signal off.Therefore, if arbitrary display lamp 20 be bright in the case of, keying signal
On/off exports positive logic, and is sent to the second input 542 and input of the 3rd switch element SW3.
It is to say, when the second triggering signal OE is positive logic, keying signal on/off passes through the 3rd
Switch element SW3 controls display lamp 20, and when the second triggering signal OE is negative logic (anti-phase the
Two trigger signalFor positive logic) time, keying signal on/off output positive logic to the second of door 54
Input 542.
When the second anti-phase triggering signalDuring for positive logic, it is enable (enable) with door 54, and the
Three switch element SW3 are for being not turned on.Now, for pattern with an automatic light meter.When the second triggering signal OE is
During positive logic, with door 54 for closing (disable), and the 3rd switch element SW3 is conducting.Now,
For hand-operating light pattern.
About the operating process of the pilot lamp power managing device of the invention described above electronic installation, illustrate such as
After.
User can select pattern 81 with an automatic light meter and hand-operating light pattern 82 by operation interface 40, and
Signal after selection transfers to embedded controller EC, to send the second triggering signal OE.Separately, minimum bright
Degree setting value LL can be system default value, or can sets itself by user.
Hand-operating light pattern
If selecting hand-operating light pattern 82, then the second triggering signal OE is positive logic, and makes the 3rd switch
Element SW3 turns on, so that the keying signal on/off of display lamp 20 is directly by the 3rd switch element
SW3 and light display lamp 20.Meanwhile, anti-phase second is received with door 54 and frequency generator 53
Trigger signalFor negative logic, and make to be failure to actuate with frequency generator 53 with door 54.
Hand-operating light pattern 82 times, embedded controller EC directly makes the brightness of display lamp 20 for making
The brightness that user is inputted.Therefore, in this manner under, user can according to individual to the sensitivity of brightness from
Row sum-equal matrix display lamp 20 brightness, uses degree of freedom to improve.
Pattern with an automatic light meter
If selecting pattern 81 with an automatic light meter, then the second triggering signal OE is negative logic, and makes the 3rd switch
Element SW3 is not turned on.Meanwhile, the second anti-phase triggering is received with door 54 and frequency generator 53
SignalFor positive logic, so make and door 54 (wherein, frequency produces with frequency generator 53 action
Device 53 action end of still needing sees whether the first triggering signal b is positive logic).
It is noted that owing to this pattern is pattern 81 with an automatic light meter, is not required to user and manually adjusts voluntarily
The brightness of display lamp 20, therefore the brightness of display lamp 20 does not allow complete dark (brightness is equal to zero).Therefore,
Embedded controller EC has data output connecting pin DT, right in order to export minimum brightness setting value LL institute
The magnitude of voltage answered, and the magnitude of voltage corresponding to minimum brightness setting value LL can be as the reference of comparator 52
Value and the setting of dutycycle of the first pulse-width modulation signal PWM produced as frequency generator 53
Value.
In pattern with an automatic light meter 81 times, backlight brightness values BL is converted into accordingly by available integrator 51
Magnitude of voltage a.Then, comparator 52 comparing voltage value a and minimum brightness setting value LL, and foundation
Comparative result has following two kinds of situations:
A) when the corresponding magnitude of voltage a of backlight brightness values BL institute is more than or equal to minimum brightness setting value LL
Time, representing that backlight brightness values BL is more than or equal to minimum brightness setting value LL, comparator 52 sends
First triggering signal b is negative logic, the first the most anti-phase triggering signalFor positive logic so that first opens
Close element SW1 to be not turned on, and make second switch element SW2 for conducting, and can be directly by backlight illumination
Value BL produces corresponding brightness adjustment value, and then the brightness of control display lamp 20, i.e. display lamp 20
Receive the brightness adjustment value being equal to backlight brightness values BL.For example, backlight brightness values BL is 80%
Time, the brightness of display lamp 20 is also 80%.
B) when the corresponding magnitude of voltage a of backlight brightness values BL institute is less than minimum brightness setting value LL, table
Show that backlight brightness values BL is less than minimum brightness setting value LL, the first triggering signal that comparator 52 sends
B is positive logic so that the first switch element SW1 conducting, and second switch element SW2 is for being not turned on.
In this, frequency generator 53 can produce corresponding brightness adjustment value according to minimum brightness setting value LL,
And then control the brightness of display lamp 20.Base this, when the luminance-reduction of backlight module 11 level off to zero (or
Equal to zero) time, the brightness of display lamp 20 can maintain minimum brightness setting value LL, to warn user
Electric power will exhaust.
The electronic installation of the present invention and electricity saving method thereof can be according to the current backlights of the display of electronic installation
The minimum brightness setting value of brightness and display lamp adjusts the brightness of display lamp automatically, and minimum brightness setting value
Available user sets itself or system have set originally the most, thus electronic installation be able to energy-conservation,
Reduce power consumption and extend the flying power of battery.
Although the technology contents of the present invention discloses as above with preferred embodiment, so it is not limited to
The present invention, any those skilled in the art, are made a little change and profit in the spirit without departing from the present invention
Decorations, all should be encompassed within the scope of the present invention, and therefore protection scope of the present invention is when regarding claims institute
The person of defining is as the criterion.
Claims (8)
1. an electricity saving method for electronic installation, above-mentioned electronic installation has at least one display lamp and display
Device, is characterized in that, the electricity saving method of above-mentioned electronic installation comprises:
Obtain the backlight brightness values of aforementioned display device；
Minimum brightness setting value according to above-mentioned backlight brightness values with above-mentioned display lamp produces brightness adjustment value,
Above-mentioned brightness adjustment value is more than or equal to above-mentioned minimum brightness setting value；And
The brightness of above-mentioned display lamp is adjusted according to above-mentioned brightness adjustment value；
Above-mentioned brightness adjustment value is based on current above-mentioned backlight brightness values and accounts for the above-mentioned backlight illumination of maximum
The ratio of value, corresponding between above-mentioned minimum brightness setting value and the maximum brightness value of above-mentioned display lamp；
The brightness (%) of display lamp=minimum brightness setting value (%)+(100-minimum brightness setting value) × current
Backlight brightness values (%).
The electricity saving method of electronic installation the most according to claim 1, is characterized in that, also comprises:
There is provided operation interface, in order to receive above-mentioned minimum brightness setting value.
3. an electronic installation, is characterized in that, comprises:
Display, has backlight module, and above-mentioned backlight module has backlight brightness values；
At least one display lamp；And
Brightness controller, is electrically connected to above-mentioned backlight module and above-mentioned display lamp, above-mentioned brightness controller root
Brightness adjustment value is produced according to the minimum brightness setting value of above-mentioned backlight brightness values with above-mentioned display lamp, above-mentioned bright
Degree adjusted value is more than or equal to above-mentioned minimum brightness setting value, and above-mentioned brightness controller is adjusted according to above-mentioned brightness
Whole value controls the brightness of above-mentioned display lamp；
Above-mentioned brightness adjustment value is based on current above-mentioned backlight brightness values and accounts for the above-mentioned backlight illumination of maximum
The ratio of value, corresponding between above-mentioned minimum brightness setting value and the maximum brightness value of above-mentioned display lamp；
The brightness (%) of display lamp=minimum brightness setting value (%)+(100-minimum brightness setting value) × current
Backlight brightness values (%).
Electronic installation the most according to claim 3, is characterized in that, also comprises operation interface, aforesaid operations
Interface is electrically connected to above-mentioned brightness controller, in order to receive above-mentioned minimum brightness setting value.
Electronic installation the most according to claim 3, is characterized in that, also comprises chipset, said chip group
Electrically connect above-mentioned backlight module and above-mentioned brightness controller, in order to control the above-mentioned backlight of above-mentioned backlight module
Brightness value.
Electronic installation the most according to claim 3, is characterized in that, above-mentioned brightness controller is embedded control
Device processed.
Electronic installation the most according to claim 3, is characterized in that, above-mentioned brightness controller comprises:
Integrator, is electrically connected to aforementioned display device, and is output as by above-mentioned backlight brightness values integration corresponding
Voltage signal；
Frequency generator, is electrically connected to above-mentioned integrator；And
Comparator, is electrically connected to above-mentioned integrator and said frequencies generator, and above-mentioned comparator is more above-mentioned
Above-mentioned voltage signal that integrator is exported and above-mentioned minimum brightness setting value, when above-mentioned voltage signal is more than
During above-mentioned minimum brightness setting value, above-mentioned display lamp receives the above-mentioned brightness being equal to above-mentioned backlight brightness values
Adjusted value, when above-mentioned voltage signal is less than above-mentioned minimum brightness setting value, said frequencies generator exports
The above-mentioned brightness adjustment value of corresponding above-mentioned minimum brightness setting value is to above-mentioned display lamp.
Electronic installation the most according to claim 7, is characterized in that, also comprises embedded controller, above-mentioned
Embedded controller transmits triggering signal and gives said frequencies generator, and coordinates above-mentioned voltage signal with above-mentioned
The fiducial value of minimum brightness setting value, and enable or closedown said frequencies generator.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| TW101141884 | 2012-11-09 | ||
| TW101141884A TWI582576B (en) | 2012-11-09 | 2012-11-09 | An electronic apparatus and power saving method thereof |
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| TW (1) | TWI582576B (en) |
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| CN107277995A (en) * | 2017-07-05 | 2017-10-20 | 环球智达科技（北京）有限公司 | The adjusting method of indicator lamp brightness |
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| CN101414439A (en) * | 2007-10-16 | 2009-04-22 | 索尼株式会社 | Display apparatus, quantity-of-light adjusting method for display apparatus and electronic equipment |
| TW201021615A (en) * | 2008-11-19 | 2010-06-01 | Silicon Motion Inc | Luminance control system and related control method |
| CN201479427U (en) * | 2009-08-21 | 2010-05-19 | 深圳市长运通集成电路设计有限公司 | Lighting rectification device of light-emitting diode module |
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| CN103809728A (en) | 2014-05-21 |
| TWI582576B (en) | 2017-05-11 |
| TW201418970A (en) | 2014-05-16 |
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