CN108877739A - A kind of method, apparatus and electronic equipment of adjusting backlight luminance - Google Patents
A kind of method, apparatus and electronic equipment of adjusting backlight luminance Download PDFInfo
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- CN108877739A CN108877739A CN201810770001.2A CN201810770001A CN108877739A CN 108877739 A CN108877739 A CN 108877739A CN 201810770001 A CN201810770001 A CN 201810770001A CN 108877739 A CN108877739 A CN 108877739A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2354/00—Aspects of interface with display user
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
- G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
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- Liquid Crystal Display Device Control (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The method, apparatus and electronic equipment of a kind of adjusting backlight luminance are provided.This approach includes the following steps：After obtaining ambient lighting angle value by ambient light sensor, according to backlight illumination adjustment curve and the ambient lighting angle value, determine backlight illumination regulated value corresponding with the ambient lighting angle value, wherein, which determined based on the corresponding relationship between luminance reference value and ambient light illumination and backlight illumination；And according to the backlight illumination regulated value, adjust the backlight illumination of the display screen of the electronic equipment.This method can take into account powder consumption of electronic equipment and user human visual experience to adjust the backlight illumination of display screen according to ambient light illumination.
Description
Technical field
The present invention relates to electronic technology field, in particular to the method, apparatus and electronic equipment of a kind of adjusting backlight luminance.
Background technique
Ambient light sensor has been such as smart phone, tablet computer, laptop, smart television, multimedia
The standard configuration of the electronic equipments such as device, a most important function is exactly the light conditions for perceiving electronic equipment local environment,
And inform processor, it is come from based on electronic equipment set manufacturer or the preset environment light of application developer and the mapping curve of backlight
Dynamic to adjust display backlight brightness, to reduce the power consumption of product, this is a kind of method for saving power consumption.
In the prior art, there is no the relatively reasonable schemes that display backlight brightness is adjusted according to ambient light illumination.
Summary of the invention
The embodiment of the present invention provides the method, apparatus and electronic equipment of a kind of adjusting backlight luminance, sets to take into account electronics
Standby power consumption and user human visual experience to adjust the backlight illumination of display screen according to ambient light illumination.
The first aspect of the present invention provides a kind of method of adjusting backlight luminance, including：It is obtained by ambient light sensor
After obtaining ambient lighting angle value, according to backlight illumination adjustment curve and the ambient lighting angle value, the determining and environment light
The corresponding backlight illumination regulated value of brightness value, wherein the backlight illumination adjustment curve is based on luminance reference value and environment
What the corresponding relationship between illuminance and backlight illumination determined；According to the backlight illumination regulated value, the electronic equipment is adjusted
Display screen backlight illumination.
With reference to first aspect, in the first possible implementation, environment is obtained by ambient light sensor described
Before illuminance value, the method also includes：The luminance reference value is obtained, the luminance reference value and ambient lighting are based on
Corresponding relationship between degree and backlight illumination generates backlight illumination adjustment curve, wherein the ambient light illumination and backlight illumination
Between corresponding relationship be to be determined according to human eye to the sensitivity curve of brightness.
With reference to first aspect or the first possible implementation, in the second possible implementation, the ring
Corresponding relationship between border illuminance and backlight illumination is specifically obtained by following steps：Based on human eye brightness and ambient light illumination
Mapping relations determine the sensitivity curve；Based on the sensitivity curve, determine the ambient light illumination and backlight illumination it
Between corresponding relationship.
In conjunction with the first possible implementation or second of possible implementation, in the third possible realization side
In formula, the sensitivity curve is specifically obtained by following formula：
Wherein, S is susceptibility of the human eye to brightness, and L is human eye brightness value, and Y is ambient lighting angle value, and Lw is human eye brightness
Maximum value, Yw be ambient light illumination maximum value,
In conjunction with second of possible implementation or the third possible implementation, in the 4th kind of possible implementation
In, it is described to be based on the sensitivity curve, determine the corresponding relationship between the ambient light illumination and backlight illumination, specially：
The inverse for calculating the sensitivity curve obtains the corresponding relationship between the ambient light illumination and backlight illumination.
With reference to first aspect and the first possible implementation is any one into the 4th kind of possible implementation
Kind, it is in a fifth possible implementation, described according to the backlight illumination regulated value, adjust the display of the electronic equipment
The backlight illumination of screen, specially：When the backlight illumination regulated value is greater than corresponding to the maximum brightness grade of the backlight illumination
When brightness value, the backlight illumination of the display screen is adjusted to brightness value corresponding to the maximum brightness grade.
Second aspect provides a kind of device of adjusting backlight luminance, including：Backlight illumination regulated value determining module, is used for
After obtaining ambient lighting angle value by ambient light sensor, according to backlight illumination adjustment curve and the ambient light illumination
Value determines backlight illumination regulated value corresponding with the ambient lighting angle value, wherein the backlight illumination adjustment curve is to be based on
What the corresponding relationship between luminance reference value and ambient light illumination and backlight illumination determined；Backlight adjustment module is used for basis
The backlight illumination regulated value, adjusts the backlight illumination of the display screen of the electronic equipment.
In conjunction with second aspect, in the first possible implementation, the electronic equipment further includes：Backlight illumination tune
Pitch curve generation module, for obtaining institute before the electronic equipment obtains ambient lighting angle value by ambient light sensor
Luminance reference value is stated, based on the corresponding relationship between the luminance reference value and ambient light illumination and backlight illumination, generates back
Brightness adjustment curve, wherein the corresponding relationship between the ambient light illumination and backlight illumination is according to human eye to brightness
What sensitivity curve determined.
In conjunction with second aspect or the first possible implementation, in the second possible implementation, the ring
Corresponding relationship between border illuminance and backlight illumination is specifically obtained by following steps：Based on human eye brightness and ambient light illumination
Mapping relations determine the sensitivity curve；Based on the sensitivity curve, determine the ambient light illumination and backlight illumination it
Between corresponding relationship.
In conjunction with the first possible implementation or second of possible implementation, in the third possible realization side
In formula, the sensitivity curve is specifically obtained by following formula：
Wherein, S is susceptibility of the human eye to brightness, and L is human eye brightness value, and Y is ambient lighting angle value, and Lw is human eye brightness
Maximum value, Yw be ambient light illumination maximum value,
It is any one into the third possible implementation in conjunction with second aspect and the first possible implementation
Kind, in the fourth possible implementation, the backlight adjustment module is specifically used for：When the backlight illumination regulated value is big
When the brightness value corresponding to the maximum brightness grade of the backlight illumination, by the backlight illumination of the display screen be adjusted to it is described most
Brightness value corresponding to high brightness levels.
The third aspect provides a kind of electronic equipment, including：Ambient light sensor, for acquiring electronic equipment local environment
Ambient light illumination；Processor is connect with the ambient light sensor, for obtaining ambient lighting by ambient light sensor
After angle value, according to backlight illumination adjustment curve and the ambient lighting angle value, determination is corresponding with the ambient lighting angle value
Backlight illumination regulated value；According to the backlight illumination regulated value, the backlight for adjusting the display screen of the electronic equipment is bright
Degree, wherein the backlight illumination adjustment curve is based on pair between luminance reference value and ambient light illumination and backlight illumination
It should be related to determining.
In conjunction with the third aspect, in the first possible implementation, the processor is also used to：It is set in the electronics
Before the standby acquisition ambient lighting angle value by ambient light sensor, the luminance reference value is obtained, the luminance reference value is based on
And the corresponding relationship between ambient light illumination and backlight illumination, generate the backlight illumination adjustment curve, wherein the environment
Corresponding relationship between illuminance and backlight illumination is determined according to sensitivity curve of the human eye to brightness.
In conjunction with the third aspect or the first possible implementation, in the second possible implementation, the ring
Corresponding relationship between border illuminance and backlight illumination is specifically obtained by following steps：Based on human eye brightness and ambient light illumination
Mapping relations determine the sensitivity curve；Based on the sensitivity curve, determine the ambient light illumination and backlight illumination it
Between corresponding relationship.
In conjunction with the first possible implementation or second of possible implementation, in the third possible realization side
In formula, the sensitivity curve is specifically obtained by following formula：
Wherein, S is susceptibility of the human eye to brightness, and L is human eye brightness value, and Y is ambient lighting angle value, and Lw is human eye brightness
Maximum value, Yw be ambient light illumination maximum value,
It is any one into the third possible implementation in conjunction with the third aspect and the first possible implementation
Kind, in the fourth possible implementation, the processor is specifically used for：Described in being greater than when the backlight illumination regulated value
When brightness value corresponding to the maximum brightness grade of the brightness of display screen back, the backlight illumination of the display screen is adjusted to described
Brightness value corresponding to maximum brightness grade.
The present invention has the beneficial effect that：
Since electronic equipment can be after obtaining ambient lighting angle value by ambient light sensor, according to based on brightness base
Backlight illumination adjustment curve and ambient lighting determined by quasi- value and the corresponding relationship between ambient light illumination and backlight illumination
Angle value determines backlight illumination regulated value corresponding with ambient lighting angle value, and according to backlight illumination regulated value, adjusts electronic equipment
The backlight illumination of display screen come in this way, electronic equipment can take into account powder consumption of electronic equipment and user human visual experience
The backlight illumination of display screen is adjusted according to ambient light illumination.
Detailed description of the invention
Fig. 1 is the method flow diagram of the adjusting backlight luminance in one embodiment of the invention；
Fig. 2 is the functional block diagram of the device of the adjusting backlight luminance in one embodiment of the invention；
Fig. 3 is the structural schematic diagram of the electronic equipment in one embodiment of the invention.
Specific embodiment
The embodiment of the present invention provides the method, apparatus and electronic equipment of a kind of adjusting backlight luminance, sets for taking into account electronics
Standby power consumption and user human visual experience to adjust the backlight illumination of display screen according to ambient light illumination, and solution is overall
Thinking is as follows：
Electronic equipment is after obtaining ambient lighting angle value by ambient light sensor, according to based on luminance reference value and ring
Backlight illumination adjustment curve and ambient lighting angle value determined by corresponding relationship between border illuminance and backlight illumination determine
Backlight illumination regulated value corresponding with ambient lighting angle value, and according to backlight illumination regulated value, adjust the display screen of electronic equipment
Backlight illumination, in this way, electronic equipment can take into account powder consumption of electronic equipment and user human visual experience, according to environment
Illuminance adjusts the backlight illumination of display screen, and user experience can be improved.
With reference to the accompanying drawings of the specification to the main realization principle of the embodiment of the present invention, specific implementation process and its to should be able to
The beneficial effect enough reached is explained in detail.
The present embodiment provides a kind of method of adjusting backlight luminance, it is applied on an electronic equipment, which can be with
For smart phone, tablet computer, laptop, multimedia player etc., these electronic equipments include a display screen, this is aobvious
Display screen can be common liquid crystals display screen, can also be touch display screen or flexible screen, and the application is not specifically limited.Into
One step is additionally provided with an ambient light sensor on the electronic equipment, for detecting the ambient light illumination of electronic equipment local environment.
Specific operating procedure is as shown in Figure 1, include：
S101：After obtaining ambient lighting angle value by ambient light sensor, according to backlight illumination adjustment curve and
Ambient lighting angle value determines backlight illumination regulated value corresponding with ambient lighting angle value, wherein backlight illumination adjustment curve is base
What the corresponding relationship between luminance reference value and ambient light illumination and backlight illumination determined；
S102：According to backlight illumination regulated value, the backlight illumination of the display screen of electronic equipment is adjusted.
In the present embodiment, above-mentioned backlight illumination adjustment curve determines before S101, then, method can also include：
Luminance reference value is obtained, based on the corresponding relationship between luminance reference value and ambient light illumination and backlight illumination, generates backlight
Brightness regulation curve, wherein the corresponding relationship between ambient light illumination and backlight illumination is the susceptibility according to human eye to brightness
What curve determined.
Wherein, electronic equipment luminance reference value obtained can for electronic equipment user in actual use, according to
The ambient light illumination setting of current environment, for example, user or electronic equipment call a luminance reference value to obtain interface, this
When, the ambient light illumination of environment is h lux where electronic equipment detects active user, and user can obtain in the luminance reference value
Its backlight brightness values for thinking most comfortable display screen under the present circumstances is set in interface, such as y nits.
Preferably, the setting of the luminance reference value can only user for the first time use electronic equipment when by electronic equipment from
Dynamic to initiate inquiry, later, user can be by carrying out selection change in the setting of the system of electronic equipment manually.
Next, electronic equipment is according to being preset in environment light therein when electronic equipment obtains above-mentioned luminance reference value
Corresponding relationship between illumination and backlight illumination generates the backlight illumination adjustment curve for the active user that one is directed to electronic equipment.
It should be noted that in practical applications, the ambient light illumination that ambient light sensor measures can be in CIE
Brightness Y under 1931 color spaces (as international lighting association color space standards as defined in 1931), and human eye perception
Backlight illumination is closer to CIE Luv color space (as international lighting association (CIE) color space mark as defined in 1976
It is quasi-) in brightness L, it is possible to characterize ambient lighting angle value with Y, L characterizes human eye brightness value, as shown in formula 1, Y and L it
Between mapping relations be：
Wherein, Yw is the maximum value of environmental light brightness, that is, ambient light sensor is capable of the maximum value of measured value.
In order to make under different ambient light illuminations, the backlight illumination for the display screen that user is perceived does not change, electricity
The manufacturer of sub- equipment or developer's human eye brightness according to shown in above-mentioned formula (1) of application program and environmental light brightness
Mapping relations obtain human eye to the sensitivity curve of brightness, i.e. formula (2).
Wherein, S is susceptibility of the human eye to brightness, and Lw is the maximum value of human eye brightness, that is, the maximum value of L, in reality
In the application of border, Lw can take 100nits.
It is available in conjunction with formula (1) and (2)：
Further, it is based on above-mentioned sensitivity curve, determines the corresponding relationship between environmental light brightness and backlight illumination, specifically
, the inverse of sensitivity curve is calculated, the corresponding relationship between environmental light brightness and backlight illumination, i.e. formula (3) are obtained：
Wherein, Le is the backlight brightness values of display screen.
Further, it is y nits by the corresponding ambient lighting angle value of luminance reference value, such as luminance reference value, corresponds to environment
Illuminance value h lux, the value as Y bring formula (3) into, obtain the value of the backlight illumination Le of display screen at this time, such as x
Nits, then, it will be able to generate above-mentioned backlight illumination adjustment curve Le ', i.e.,：
" normalization " processing namely is carried out to curve Le, the coordinate system that longitudinal axis value range is 0~1 is converted into the longitudinal axis
The coordinate system that value range is 0~255, to obtain curve Le '.
It should be noted that above-mentioned backlight adjustment curve can store in the electronic device, after generation for subsequent
It is called directly when use, without generating the curve online again, until user changes the number of luminance reference value or initial
When changing electronic equipment, backlight adjustment curve is just generated online again.
Firstly, executing S101：After obtaining ambient lighting angle value by ambient light sensor, adjusted according to backlight illumination
Curve and ambient lighting angle value determine backlight illumination regulated value corresponding with ambient lighting angle value.
Specifically, backlight illumination adjustment curve Le ' is obtained later in electronic equipment, electronic equipment at least can be specific
By following two embodiment according to backlight illumination adjustment curve and ambient lighting angle value, to determine and ambient lighting angle value
Corresponding backlight illumination regulated value.
The first embodiment, ambient light sensor can at regular intervals, such as 5s, 30s, 1min acquire a secondary ring
Border illuminance value, obtains ambient lighting angle value, such as l, then, according to backlight illumination adjustment curve Le ', will obtain with it is collected
The corresponding backlight illumination regulated value of ambient lighting angle value l, such as m, that is, bring l into curve Le ', so that it may Le '=m is obtained,
That is backlight illumination regulated value.
Second of embodiment, ambient light sensor each a period of time, such as 5s, 30s, 1min acquire a secondary environment light
Brightness value obtains ambient lighting angle value, and such as l, then, electronic equipment judge the ring of electronic equipment local environment according to these values
Whether border illuminance changes, if so, will then be obtained and collected ambient lighting according to backlight illumination adjustment curve Le '
The corresponding backlight illumination regulated value of angle value l, such as m, that is, bring l into curve Le ', so that it may Le '=m is obtained, i.e. backlight is bright
Spend regulated value；If it is not, then without any movement.
Certainly, in the specific implementation process, the mode side of backlight illumination regulated value corresponding with ambient lighting angle value is determined
Method is not limited only to above two embodiment, and the application is not specifically limited.
Next, executing S102, i.e.,：According to backlight illumination regulated value, the backlight illumination of the display screen of electronic equipment is adjusted.
In the specific implementation process, S102 can be：The backlight illumination of the display screen of electronic equipment is adjusted to by S101
The backlight illumination regulated value of acquisition.
Certainly, in the present embodiment, since the maximum brightness grade that binary code can identify is 255, then, when upper
State brightness value corresponding to brightness value corresponding to maximum brightness grade of the backlight illumination regulated value greater than the backlight illumination of display screen
When, S102 can be that the backlight illumination of display screen is adjusted to brightness value corresponding to brightness value corresponding to maximum brightness grade.
Above scheme is illustrated with specific example below.
By taking electronic equipment is tablet computer as an example, formula (3) and formula (4) can be prestored before its factory, when
When user uses the tablet computer for the first time, tablet computer can show a luminance reference value set interface, show and work as on the interface
The current environment illuminance that preceding ambient light sensor detects, such as 400lux, user can be in luminance reference value set interfaces
The backlight illumination that the display screen of the most comfortable is thought under this environment light is set, if that user's selection is 50nits, environment light is passed
The maximum range Yw=10000lux of sensor, then, firstly, current environment illuminance when according to user setting luminance reference value
Y=400lux finds out Le=0.169nits by formula (3), then, brings y=50nits, x=0.169nits into formula
(4), in this way, it is possible to acquire the backlight illumination adjustment curve for the user, i.e. formula (4)：
S101 is executed, ambient light sensor can be every the ambient lighting of the tablet computer local environment of acquisition in one minute
Angle value, and bring the value into above-mentioned formula (4), it will be able to obtain backlight illumination regulated value.Further, S102 is executed, i.e., will be shown
The backlight illumination of display screen is adjusted to the backlight illumination regulated value.
Certainly, in another embodiment, the ambient lighting angle value of a tablet computer local environment was acquired every one minute,
And whether with the ambient lighting angle value of last time acquisition consistent, or in reasonable floating range if judging the ambient lighting angle value
It is interior, in this way, then it is assumed that no change has taken place for the environment light of tablet computer local environment, then, there is no need to execute S102；Such as
It is no, then it is assumed that the environment light of tablet computer local environment changes, at this point, again bringing collected ambient lighting angle value into
State formula (4), it will be able to obtain backlight illumination regulated value.Further, S102 is executed, i.e., is adjusted to the backlight illumination of display screen
The backlight illumination regulated value.
Further, when the backlight illumination regulated value bringing ambient lighting angle value into above-mentioned formula (4) and obtaining is
When 800nits, brightness value 500nits corresponding to the maximum brightness grade 255 greater than the backlight illumination of display screen, it can will show
The backlight illumination of screen is adjusted to 500nits.
Seen from the above description, due to electronic equipment can by ambient light sensor obtain ambient lighting angle value it
Afterwards, it is adjusted according to the backlight illumination based on determined by the corresponding relationship between luminance reference value and ambient light illumination and backlight illumination
Curve and ambient lighting angle value determine backlight illumination regulated value corresponding with ambient lighting angle value, and according to backlight illumination tune
Section value adjusts the backlight illumination of the display screen of electronic equipment, in this way, electronic equipment can take into account powder consumption of electronic equipment and use
Family human visual experience adjusts the backlight illumination of display screen according to ambient light illumination, may further improve user experience.
Based on the same inventive concept, the second aspect of the present invention provides a kind of device of adjusting backlight luminance, such as Fig. 2 institute
Show, including：Backlight illumination regulated value determining module 10 is used for after obtaining ambient lighting angle value by ambient light sensor,
According to backlight illumination adjustment curve and ambient lighting angle value, backlight illumination regulated value corresponding with ambient lighting angle value is determined,
Wherein, backlight illumination adjustment curve is true based on the corresponding relationship between luminance reference value and ambient light illumination and backlight illumination
Fixed；Backlight adjustment module 20, for adjusting the backlight illumination of the display screen of electronic equipment according to backlight illumination regulated value.
In the present embodiment, above-mentioned apparatus further includes：Backlight illumination adjustment curve generation module 30, for obtaining brightness base
Quasi- value is generated backlight illumination and is adjusted song based on the corresponding relationship between luminance reference value and ambient light illumination and backlight illumination
Line, wherein the corresponding relationship between ambient light illumination and backlight illumination is determined according to sensitivity curve of the human eye to brightness.
Specifically, the corresponding relationship between ambient light illumination and backlight illumination is specifically obtained by following steps：Based on people
The mapping relations of eye brightness and ambient light illumination, determine sensitivity curve；Based on sensitivity curve, ambient light illumination and back are determined
Corresponding relationship between brightness.
In practical applications, the ambient light illumination that ambient light sensor measures is the brightness under 1931 color space of CIE
Y, and human eye perception backlight illumination closer to the brightness L in CIE Luv color space, then, just with Y characterization ambient lighting
Angle value, L characterize human eye brightness value, shown in the mapping relations such as formula (1) between Y and L.
So the backlight illumination for the display screen that user is perceived does not become in order to make under different ambient light illuminations
Change, the manufacturer of electronic equipment or developer's human eye brightness according to shown in above-mentioned formula (1) of application program and environment light
The mapping relations of brightness obtain human eye to the sensitivity curve of brightness, i.e. formula (2), and in practical applications, Lw can take
100nits。
Optionally, available in conjunction with formula (1) and (2)：
Further, it is based on above-mentioned sensitivity curve, determines the corresponding relationship between environmental light brightness and backlight illumination, specifically
, the inverse of sensitivity curve is calculated, the corresponding relationship between environmental light brightness and backlight illumination, i.e. formula (3) are obtained.
Further, backlight illumination adjustment curve generation module 30, it is such as bright by the corresponding ambient lighting angle value of luminance reference value
Degree a reference value is y nits, corresponds to ambient lighting angle value h lux, and the value as Y brings formula (3) into, obtains at this time aobvious
The value of the backlight illumination Le of display screen, such as x nits, then, it will be able to generate the backlight illumination for being directed to electronic equipment active user
Adjustment curve please refers to formula (4), that is, is handled by " normalization " is carried out by curve, is 0~1 by longitudinal axis value range
Coordinate system be converted to longitudinal axis value range be 0~255 coordinate system, to obtain backlight illumination adjustment curve.
In the present embodiment, above-mentioned luminance reference value can for electronic equipment user in actual use, according to current
The ambient light illumination setting of environment, for example, electronic equipment detects that the ambient light illumination of active user place environment is h
Lux, one luminance reference value of pop-up obtain interface, the back that it thinks most comfortable display screen under the present circumstances for user setting
Brightness values, such as y nits.
Preferably, the setting of the luminance reference value is only sent out when user uses electronic equipment for the first time by electronic equipment automatically
Inquiry is played, later, user can be by carrying out selection change in the setting of the system of electronic equipment manually.
Further, backlight illumination regulated value determining module 10 obtains environment light by ambient light sensor in electronic equipment
After brightness value, according to the backlight illumination adjustment curve and ambient lighting determined by backlight illumination adjustment curve generation module 30
Angle value determines backlight illumination regulated value corresponding with ambient lighting angle value.
Wherein, above-mentioned ambient lighting angle value can pass through institute in said one or multiple embodiments by ambient light sensor
At least two embodiments stated are acquired, and this is no longer going to repeat them.
Further, backlight adjustment module 20, for bright according to the backlight determined by backlight illumination regulated value determining module 20
Regulated value is spent, the backlight illumination of the display screen of electronic equipment is adjusted.
Specifically, the backlight illumination of the display screen of electronic equipment is adjusted to be adjusted by backlight illumination by backlight adjustment module 20
It is worth the backlight illumination regulated value that determining module 10 determines.
In another embodiment, backlight adjustment module 20, is specifically also used to：When backlight illumination regulated value is greater than display screen
When brightness value corresponding to the maximum brightness grade of backlight illumination, the backlight illumination of display screen is adjusted to corresponding to maximum brightness grade
Brightness value.
In the above various embodiments, in the absence of conflict, implementation can be combined with each other.
Various change mode and specific example in the method for adjusting backlight luminance in 1 embodiment of earlier figures is equally applicable
In the terminal of the present embodiment, by the detailed description of the aforementioned method to adjusting backlight luminance, those skilled in the art can be clear
The implementation method for knowing the device in the present embodiment of Chu, so this will not be detailed here in order to illustrate the succinct of book.
Based on the same inventive concept, the third aspect of the present invention provides a kind of electronic equipment, which can be intelligence
Energy mobile phone, tablet computer, laptop, multimedia player etc..
Fig. 3 shows the structural schematic diagram of electronic equipment of the embodiment of the present invention.
Referring to FIG. 3, the electronic equipment includes：Ambient light sensor 301, for acquiring the ring of electronic equipment local environment
Border illuminance；Processor 303 is connect with ambient light sensor 301, for obtaining ring by ambient light sensor in electronic equipment
After the illuminance value of border, according to backlight illumination adjustment curve and ambient lighting angle value, determination is corresponding with ambient lighting angle value
Then backlight illumination regulated value according to backlight illumination regulated value, adjusts the backlight illumination of the display screen of electronic equipment, wherein institute
Stating backlight illumination adjustment curve is determined based on the corresponding relationship between luminance reference value and ambient light illumination and backlight illumination
's.
Wherein, which can also include memory 302, between storage environment illuminance and backlight illumination
Corresponding relationship, that is, the mapping table of ambient light illumination and backlight illumination.
In the present embodiment, memory 302 can be the memory of terminal, and storage is by electronic equipment set manufacturer and applies journey
Corresponding relationship between the preset ambient light illumination of sequence developer and backlight illumination, can also store and be acquired by ambient light sensor
Ambient lighting angle value, then, processor 303 can read above-mentioned ambient light illumination and backlight illumination from memory 302
Between corresponding relationship and ambient lighting angle value.Memory 302 can also for NVRAM nonvolatile storage, DRAM dynamic with
One of machine memory, SRAM Static RAM, Flash flash memory etc..
Wherein, in Fig. 3, processor 303 can also with such as I/O interface 304, display screen 305, WiFi module 306, penetrate
Together, these are all it is known in the art for various other circuit connections of frequency antenna 307 etc, and therefore, the application is no longer
It is described further.
In practical applications, display screen 305 can be common liquid crystals display screen, can also be touch display screen, Huo Zherou
Property screen, the application are not specifically limited.
Further, processor 303 are also used to：Before obtaining ambient lighting angle value by ambient light sensor, obtain bright
A reference value is spent, based on the corresponding relationship between luminance reference value and ambient light illumination and backlight illumination, generates backlight illumination tune
Pitch curve, wherein the corresponding relationship between ambient light illumination and backlight illumination is true according to sensitivity curve of the human eye to brightness
Fixed.
In the present embodiment, above-mentioned backlight adjustment curve can store in the memory 302, after generation for rear
It is continuous to call directly when using, without generating the curve online again, until user changes the number or just of luminance reference value
When beginningization electronic equipment, backlight adjustment curve is just generated online again.
Further, the corresponding relationship between ambient light illumination and backlight illumination is specifically obtained by following steps：Based on human eye
The mapping relations of brightness and ambient light illumination, determine sensitivity curve；Based on sensitivity curve, ambient light illumination and backlight are determined
Corresponding relationship between brightness.
In practical applications, the ambient light illumination that ambient light sensor measures is the brightness under 1931 color space of CIE
Y, and human eye perception backlight illumination closer to the brightness L in CIE Luv color space, then, just with Y characterization ambient lighting
Angle value, L characterize human eye brightness value, and the mapping relations between Y and L are with regard to as shown in formula 1.
So the backlight illumination for the display screen that user is perceived does not become in order to make under different ambient light illuminations
Change, the manufacturer of electronic equipment or developer's human eye brightness according to shown in above-mentioned formula (1) of application program and environment light
The mapping relations of brightness obtain human eye to the sensitivity curve of brightness, i.e., in practical applications, Lw can take formula (2)
100nits。
Optionally, available in conjunction with formula (1) and (2)：
Further, it is based on above-mentioned sensitivity curve, determines the corresponding relationship between environmental light brightness and backlight illumination, specifically
, the inverse of sensitivity curve is calculated, the corresponding relationship between environmental light brightness and backlight illumination, i.e. formula (3) are obtained.
It is y nits by the corresponding ambient lighting angle value of luminance reference value, such as luminance reference value, corresponds to ambient light illumination
Value h lux, the value as Y bring formula (3) into, the value of backlight illumination Le at this time are obtained, such as x nits, then, energy
Above-mentioned backlight illumination adjustment curve is enough generated, is please referred to formula (4), that is, is handled by " normalization " is carried out by curve, it will
The coordinate system that longitudinal axis value range is 0~1 is converted to the coordinate system that longitudinal axis value range is 0~255, to obtain curve Le '.
Next, processor 303, after electronic equipment obtains ambient lighting angle value by ambient light sensor 301, root
According to backlight illumination adjustment curve and ambient lighting angle value, backlight illumination regulated value corresponding with ambient lighting angle value is determined.
Specifically, backlight illumination adjustment curve Le ' is obtained later in electronic equipment, electronic equipment at least can be specific
By said one or multiple at least two embodiments as described in the examples according to backlight illumination adjustment curve and ring
Border illuminance value, to determine backlight illumination regulated value corresponding with ambient lighting angle value, this is no longer going to repeat them.
Further, processor 303, also particularly useful for：According to backlight illumination regulated value, the display screen of electronic equipment is adjusted
Backlight illumination.That is, the backlight illumination of the display screen of electronic equipment is adjusted to the above-mentioned backlight determined by processor 303
Brightness regulation value.
Certainly, in the present embodiment, when backlight illumination regulated value is greater than the maximum brightness grade institute of the backlight illumination of display screen
When corresponding brightness value, the backlight illumination of display screen is adjusted to brightness value corresponding to maximum brightness grade.
In the above various embodiments, in the absence of conflict, implementation can be combined with each other.
Various change mode and specific example in the method for adjusting backlight luminance in 1 embodiment of earlier figures is equally applicable
In the terminal of the present embodiment, by the detailed description of the aforementioned method to adjusting backlight luminance, those skilled in the art can be clear
The implementation method for knowing the electronic equipment in the present embodiment of Chu, so this will not be detailed here in order to illustrate the succinct of book.
The present invention has the beneficial effect that：
Since electronic equipment can be after obtaining ambient lighting angle value by ambient light sensor, according to based on brightness base
Backlight illumination adjustment curve and ambient lighting determined by quasi- value and the corresponding relationship between ambient light illumination and backlight illumination
Angle value determines backlight illumination regulated value corresponding with ambient lighting angle value, and according to backlight illumination regulated value, adjusts electronic equipment
The backlight illumination of display screen come in this way, electronic equipment can take into account powder consumption of electronic equipment and user human visual experience
The backlight illumination of display screen is adjusted according to ambient light illumination, improves user experience.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, the form of complete hardware embodiment or embodiment combining software and hardware aspects can be used in the present invention.Moreover,
The present invention can be used one or more wherein include computer usable program code computer-usable storage medium (including
But be not limited to magnetic disk storage, CD-ROM, optical memory etc.) on the form of computer program product implemented.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (18)
1. a kind of method of adjusting backlight luminance, in the electronic device, the electronic equipment includes display screen for the method application,
It is characterized in that, the method includes：
The electronic equipment obtains current first environment illuminance value；
The electronic equipment obtains luminance reference value；
The electronic equipment is according to the first environment illuminance value and the luminance reference value and ambient light illumination and backlight
Corresponding relationship between brightness determines backlight illumination regulated value corresponding with the first environment illuminance value；
For the electronic equipment according to the backlight illumination regulated value, the backlight for adjusting the display screen of the electronic equipment is bright
Degree.
2. the method as described in claim 1, which is characterized in that the luminance reference value be user by the electronic equipment into
Row setting.
3. the method as described in claim 1, which is characterized in that the luminance reference value is that user is in the electronic equipment
It is configured or changes in system setting.
4. the method as described in claim 1, which is characterized in that the electronic equipment obtains luminance reference value and includes：
The electronic equipment display brightness benchmark obtains interface；
The electronic equipment receives the input that user obtains interface by the luminance reference, generates the luminance reference value.
5. method as claimed in claim 4, which is characterized in that the electronic equipment generates the luminance reference value and includes：
The electronic equipment receives user and obtains the first backlight brightness values of interface setting by the luminance reference；
The second environment illuminance value of the electronic equipment detection current environment；
The electronic equipment generates the luminance reference value according to the second environment illuminance value and the backlight brightness values.
6. the method according to claim 1 to 5, which is characterized in that the method also includes：The electronic equipment root
Backlight illumination tune is generated according to the corresponding relationship between the luminance reference value and the ambient light illumination and the backlight illumination
Pitch curve.
7. method as claimed in claim 6, which is characterized in that the electronic equipment generates backlight illumination adjustment curve packet
It includes：When the electronic equipment obtains the luminance reference value, the electronic equipment is according to the preset ambient light illumination and institute
The corresponding relationship between backlight illumination is stated, the backlight illumination adjustment curve is generated.
8. the method according to claim 1 to 7, which is characterized in that the electronic equipment is according to the backlight illumination tune
Section value adjusts the backlight illumination of the display screen of the electronic equipment, specially：When the backlight illumination regulated value is greater than the back
When brightness value corresponding to the maximum brightness grade of brightness, the backlight illumination of the display screen is adjusted to the maximum brightness grade
Corresponding brightness value.
9. the method according to claim 1 to 7, which is characterized in that the electronic equipment is mobile phone.
10. a kind of electronic equipment, the electronic equipment includes display screen, which is characterized in that including：
Ambient light sensor, for obtaining current first environment illuminance value；
Processor is connect with the ambient light sensor, for obtaining luminance reference value, according to the first environment illuminance value
With the corresponding relationship between the luminance reference value and ambient light illumination and backlight illumination, the determining and first environment light
The corresponding backlight illumination regulated value of brightness value adjusts the display of the electronic equipment according to the backlight illumination regulated value
The backlight illumination of screen.
11. electronic equipment as claimed in claim 10, which is characterized in that the display screen obtains boundary for display brightness benchmark
Face；
The processor is also used to obtain the input at interface by the luminance reference according to user, generates the luminance reference
Value.
12. electronic equipment as claimed in claim 11, which is characterized in that the display screen is also used to receive user described in
Luminance reference obtains the first backlight brightness values of interface setting；
The second environment illuminance value of the ambient light sensor detection current environment；
The processor generates the luminance reference value according to the second environment illuminance value and the backlight brightness values.
13. such as the described in any item electronic equipments of claim 10-12, which is characterized in that the processor is also used to according to institute
It states the corresponding relationship between luminance reference value and the ambient light illumination and the backlight illumination and generates backlight illumination adjusting song
Line.
14. electronic equipment as claimed in claim 13, which is characterized in that the processor is also used to obtaining the brightness base
When quasi- value, according to the corresponding relationship between the preset ambient light illumination and the backlight illumination, the backlight illumination is generated
Adjustment curve.
15. such as the described in any item electronic equipments of claim 10-14, which is characterized in that the processor is also used to, when described
When backlight illumination regulated value is greater than brightness value corresponding to the maximum brightness grade of the backlight illumination, by the backlight of the display screen
Brightness regulation is brightness value corresponding to the maximum brightness grade.
16. such as the described in any item electronic equipments of claim 10-15, which is characterized in that the electronic equipment is mobile phone.
17. the terminal that a kind of backlight is adjusted, which is characterized in that the terminal includes：Display screen, processor and memory, wherein
The memory is for storing program；
The processor is for calling described program that the terminal is made to execute side as claimed in any one of claims 1-9 wherein
Method.
18. a kind of computer readable storage medium, including instruction, which is characterized in that when run on a computer, so that institute
State method of the computer execution as described in claim 1-9 is any.
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| CN201810770001.2A CN108877739B (en) | 2013-11-20 | 2013-11-20 | Method and device for adjusting backlight brightness and electronic equipment |
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| CN201810770001.2A CN108877739B (en) | 2013-11-20 | 2013-11-20 | Method and device for adjusting backlight brightness and electronic equipment |
| PCT/CN2013/087532 WO2015074201A1 (en) | 2013-11-20 | 2013-11-20 | Method and apparatus for regulating backlight brightness, and electronic device |
| CN201380078886.5A CN105453166B (en) | 2013-11-20 | 2013-11-20 | A kind of method, apparatus and electronic equipment of adjusting backlight luminance |
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| CN201380078886.5A Active CN105453166B (en) | 2013-11-20 | 2013-11-20 | A kind of method, apparatus and electronic equipment of adjusting backlight luminance |
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Also Published As
| Publication number | Publication date |
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| CN108877692B (en) | 2021-05-11 |
| CN105453166A (en) | 2016-03-30 |
| CN108877692A (en) | 2018-11-23 |
| CN105453166B (en) | 2018-07-31 |
| CN108877739B (en) | 2020-11-06 |
| WO2015074201A1 (en) | 2015-05-28 |
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