CN106157926A - A kind of method and device regulating brightness of display screen - Google Patents
A kind of method and device regulating brightness of display screen Download PDFInfo
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- CN106157926A CN106157926A CN201510128225.XA CN201510128225A CN106157926A CN 106157926 A CN106157926 A CN 106157926A CN 201510128225 A CN201510128225 A CN 201510128225A CN 106157926 A CN106157926 A CN 106157926A
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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
- G09G3/36—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 using liquid crystals
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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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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Abstract
The invention discloses a kind of method and device regulating brightness of display screen, including: when the environment bright angle value residing for display screen exceedes setting value, obtain the benchmark backlight data of display screen according to current environmental light brightness value；The position data of the identification information in the image that display screen faced by obtaining gathers, and the compensation backlight data of display screen is determined according to position data；According to benchmark backlight data and the backlight illumination compensating backlight data regulation display screen.Present invention achieves the brightness adjusting display screen according to environmental light brightness in time, thus ensure that user also is able to see the content that display screen shows well under the conditions of stronger external ambient light, improve user and watch effect and the experience of display screen.
Description
Technical field
The present invention relates to display screen technology field, particularly relate to a kind of method regulating brightness of display screen and dress
Put.
Background technology
Along with the development of mobile communication technology, intelligent mobile terminal (such as smart mobile phone, flat board electricity
Brain etc.) have become as requisite product in our life.At present, what intelligent mobile terminal used is aobvious
Display screen mainstream technology has two kinds, and one is liquid crystal display (LCD, Liquid Crystal Display), separately
One is Organic Electricity laser display (OLED, Organic Light-Emitting Diode).Shown in Fig. 1
The schematic diagram of the LCD brightness for observing in different display screen observation places, as it is shown in figure 1, horizontal seat
Mark represents the angle of the user observation place to display screen surface and display screen vertical direction, and vertical coordinate represents
The LCD brightness value observed.By Fig. 1 it will be seen that the observation place of user and display screen Vertical Square
To angle from 0 degree to 90 degree of direction tilt variation time (that is, the observation place of user shows from being perpendicular to
Display screen surface tilts to be parallel to display screen surface), under the conditions of identical backlight illumination, it was observed that
The continuous step-down of brightness of LCD display.Therefore, (or stronger external ambient light under sunlight
Under) user often thinks that display screen does not sees Chu, it is simply that since it is observed that LCD display
Brightness step-down, and what the enhancing of the reflectance lightness of ambient light caused.In like manner OLED screen curtain also has this type of
Defect.
In prior art, for the problem of brightness of display screen regulation, in order in saves energy and display effect
Between obtain a balance, existing intelligent mobile terminal product is equipped with light sensitive device, it is possible at any time
Understand the brightness of ambient light, and then the brightness of regulation display screen.For example, intelligent mobile terminal storage
There is the corresponding relation of environmental light brightness and brightness of display screen, such as brightness of display screen subtracting along with environmental light brightness
Weak and increase, according to the environmental light brightness monitored, determine corresponding brightness of display screen, and then show
The regulation of display screen brightness.Judge additionally, environmental light brightness is used as photographic head, this mode
It is frequently used for the environment taken pictures, after photographic head is found a view, judges environmental light brightness by the image found a view, from
And regulate the brightness of image.It addition, the front-facing camera of intelligent mobile terminal also can determine whether ambient light
Brightness, for regulating the brightness of display screen.
But, existing brightness of display screen control method regulates brightness of display screen according only to environmental light brightness,
Cannot solve under strong environment light condition, because the observation place of user is different when user watches display screen
Cause the problem that the brightness of display screen observed reduces, thus cause user and watch the effect of display screen relatively
Difference, and then have impact on Consumer's Experience.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of method regulating brightness of display screen and dress
Put, it is possible to adjust the brightness of display screen in time according to environmental light brightness, improve the viewing effect of display screen,
Thus promote Consumer's Experience.
In order to reach above-mentioned technical purpose, the present invention provides a kind of method regulating brightness of display screen, including:
When the environment bright angle value residing for display screen exceedes setting value, obtain aobvious according to current environmental light brightness value
The benchmark backlight data of display screen；The positional number of the identification information in the image that display screen faced by obtaining gathers
According to, and the compensation backlight data of display screen is determined according to described position data；According to described benchmark backlight number
According to the backlight illumination with described compensation backlight data regulation display screen.
Further, the method also includes: pre-set the right of environment bright angle value and brightness of display screen value
Should be related to；
The described benchmark backlight data according to current environmental light brightness value acquisition display screen includes:
The brightness of display screen value that current environmental light brightness value is corresponding is searched according to the corresponding relation pre-set,
And calculate the back facet current value obtained needed for described brightness of display screen value, using this back facet current value as described
The benchmark backlight data of display screen；Or,
The brightness of display screen value that current environmental light brightness value is corresponding is searched according to the corresponding relation pre-set,
Using the brightness of display screen value that finds out as the benchmark backlight data of described display screen.
Further, described determine that the compensation backlight data of display screen includes according to described position data:
The angle of described identification information and display screen vertical direction is obtained, according in advance according to described position data
If the corresponding relation of angle and brightness of display screen offset, determine that the display screen that the angle obtained is corresponding is bright
Degree offset, calculates the back facet current value obtained needed for described brightness of display screen offset, by this backlight electricity
Flow valuve is as the compensation backlight data of described display screen；Or,
The angle of described identification information and display screen vertical direction is obtained, according in advance according to described position data
If the corresponding relation of angle and brightness of display screen offset, determine that the display screen that the angle obtained is corresponding is bright
Degree offset, using this brightness of display screen offset as the compensation backlight data of described display screen.
Further, described angle with the relation of brightness of display screen offset is:
When angle is not less than 0 degree and no more than 10 degree, brightness of display screen offset is set to 0；
And/or,
When angle is more than 10 degree and no more than 25 degree, it is bright that brightness of display screen offset is set to benchmark
The 50% of angle value；And/or,
When angle is more than 25 degree and no more than 40 degree, it is bright that brightness of display screen offset is set to benchmark
The 30% of angle value；And/or,
When angle is more than 40 degree and no more than 60 degree, it is bright that brightness of display screen offset is set to benchmark
The 20% of angle value；
Wherein, described Benchmark brightness value is the brightness of display screen value determined according to current environmental light brightness value.
Further, described acquisition in the face of display screen gather image in identification information position data it
Before, the method also includes: utilize interlace mode, by the one in three kinds of pixels of red, green, blue
Gather described in the face of the image of display screen.
The present invention also provides for a kind of device regulating brightness of display screen, including: benchmark backlight processing module,
For when the environment bright angle value residing for display screen exceedes setting value, obtaining according to current environmental light brightness value
Take the benchmark backlight data of display screen；Recognition processing module, for obtaining the image gathered in the face of display screen
In the position data of identification information, and determine the compensation backlight number of display screen according to described position data
According to；Backlight adjustment module, for aobvious with the regulation of described compensation backlight data according to described benchmark backlight data
The backlight illumination of display screen.
Further, described benchmark backlight processing module is previously stored with environment bright angle value and display screen
The corresponding relation of brightness value；
Described benchmark backlight processing module specifically for:
The brightness of display screen value that current environmental light brightness value is corresponding is searched according to the corresponding relation pre-set,
And calculate the back facet current value obtained needed for described brightness of display screen value, using this back facet current value as described
The benchmark backlight data of display screen；Or,
The brightness of display screen value that current environmental light brightness value is corresponding is searched according to the corresponding relation pre-set,
Using the brightness of display screen value that finds out as the benchmark backlight data of described display screen.
Further, described recognition processing module specifically for:
The angle of described identification information and display screen vertical direction is obtained, according in advance according to described position data
If the corresponding relation of angle and brightness of display screen offset, determine that the display screen that the angle obtained is corresponding is bright
Degree offset, calculates the back facet current value obtained needed for described brightness of display screen offset, by this backlight electricity
Flow valuve is as the compensation backlight data of described display screen；Or,
The angle of described identification information and display screen vertical direction is obtained, according in advance according to described position data
If the corresponding relation of angle and brightness of display screen offset, determine that the display screen that the angle obtained is corresponding is bright
Degree offset, using this brightness of display screen offset as the compensation backlight data of described display screen.
Further, described angle with the relation of brightness of display screen offset is:
When angle is not less than 0 degree and no more than 10 degree, brightness of display screen offset is set to 0；
And/or,
When angle is more than 10 degree and no more than 25 degree, it is bright that brightness of display screen offset is set to benchmark
The 50% of angle value；And/or,
When angle is more than 25 degree and no more than 40 degree, it is bright that brightness of display screen offset is set to benchmark
The 30% of angle value；And/or,
When angle is more than 40 degree and no more than 60 degree, it is bright that brightness of display screen offset is set to benchmark
The 20% of angle value；
Wherein, described Benchmark brightness value is the brightness of display screen value determined according to current environmental light brightness value.
Further, this device also includes image capture module, is used for utilizing interlace mode, passes through
A kind of in three kinds of pixels of red, green, blue gathers described in the face of the image of display screen.
The present invention determines the benchmark backlight data of display screen by environment bright angle value, by identifying in the face of aobvious
The position data of the identification information (such as human eye or face) in the image that display screen gathers determines the benefit of display screen
Repay backlight data, achieve the intelligence for brightness of display screen according to benchmark backlight data and compensation backlight data
Can regulation.The present invention passes through the position data of identification marking information to compensate because of user's sight to display screen
The problem examining position difference and cause brightness of display screen to reduce, it is achieved that adjust in time according to environmental light brightness
The brightness of display screen, thus ensure that user also is able to well under the conditions of stronger external ambient light
See the content that display screen shows, improve user and watch effect and the experience of display screen.
Accompanying drawing explanation
Fig. 1 show in prior art showing of the LCD brightness observed in different display screen observation places
It is intended to；
Fig. 2 show the flow chart of the method for the regulation brightness of display screen that present pre-ferred embodiments provides；
Fig. 3 show the schematic diagram of the device of the regulation brightness of display screen that present pre-ferred embodiments provides；
Fig. 4 show the photographic head angular distribution figure that present pre-ferred embodiments provides.
Detailed description of the invention
Below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail, it will be appreciated that following institute
The preferred embodiment illustrated is merely to illustrate and explains the present invention, is not intended to limit the present invention.
As in figure 2 it is shown, the method regulating brightness of display screen that present pre-ferred embodiments provides includes:
Step 11: when the environment bright angle value residing for display screen exceedes setting value, according to current environment
Brightness values obtains the benchmark backlight data of display screen.
Setting value in this step is the setting value of environmental light brightness set in advance, here can be by intelligence
Mobile terminal manufacturer presets.When the environment bright angle value residing for display screen exceedes this setting value, table
Show that display screen is under strong environment light condition, to user, current environmental light brightness identifies that display information causes
Impact, the method now performing the regulation brightness of display screen that present pre-ferred embodiments provides.
Also include before this step: pre-set environment bright angle value pass corresponding with brightness of display screen value
System；The benchmark backlight data according to current environmental light brightness value acquisition display screen in this step includes:
The brightness of display screen value that current environmental light brightness value is corresponding is searched according to the corresponding relation pre-set,
And calculate the back facet current value obtained needed for this brightness of display screen value, using this back facet current value as display screen
Benchmark backlight data；
Or,
The brightness of display screen value that current environmental light brightness value is corresponding is searched according to the corresponding relation pre-set,
Using the brightness of display screen value that finds out as the benchmark backlight data of display screen.
In this step, calculate the back facet current value needed for obtaining brightness of display screen value and may is that according to display
Brightness of display screen value is scaled the backlight electricity obtained needed for this brightness of display screen value by the backlight number of screen
Flow valuve.Implement the conventional techniques means belonging to those skilled in the art, implement and be not used to limit
Determine protection scope of the present invention, repeat no more here.
Step 12: gather the image in the face of display screen.
Gather in this step includes in the face of the image of display screen: utilize interlace mode, by red,
A kind of collection in three kinds of pixels green, blue is in the face of the image of display screen.Implement and belong to art technology
The conventional techniques means of personnel, implement the protection domain being not intended to limit the present invention, the most no longer
Repeat.
In this, it should be noted that obtaining according to current environmental light brightness value in step 11 and step 12
Take the benchmark backlight data of display screen and gather in the face of the image of display screen does not has strict time sequencing,
As long as meeting the environment bright angle value residing for display screen to exceed setting value and can perform.But, the present invention couple
This does not limit.In other embodiments, also can first carry out step 12, then perform step 11, the most first
Gather the image in the face of display screen, then obtain the environment bright angle value residing for display screen and judge current environment
Whether brightness values exceedes setting value, when environment bright angle value exceedes setting value, according to current environment light
Brightness value obtains the benchmark backlight data of display screen.
Step 13: the position data of the identification information in the image that acquisition collects, and according to positional number
According to the compensation backlight data determining display screen.
As a example by identification information is such as human eye or face,
In this step, determine the compensation backlight data bag of display screen according to the position data of human eye or face
Include:
Position data according to human eye or face obtains the angle of human eye or face and display screen vertical direction,
According to the corresponding relation of default angle Yu brightness of display screen offset, determine corresponding the showing of the angle obtained
Display screen brightness offset value, calculates the back facet current value obtained needed for this brightness of display screen offset, by this back of the body
Photocurrent values is as the compensation backlight data of display screen；
Or,
Position data according to human eye or face obtains the angle of human eye or face and display screen vertical direction,
According to the corresponding relation of default angle Yu brightness of display screen offset, determine corresponding the showing of the angle obtained
Display screen brightness offset value, using this brightness of display screen offset as the compensation backlight data of display screen.
Wherein, position data is for example, set up with the center of the image controller of photographic head for zero
In XY coordinate system, the distance of the image space of human eye or face to this zero.
Specifically, as shown in Figure 4, incident ray 21 enters photographic head by cam lens 22
Image controller CCD 23.Human eye or face imaging on the CCD 23 of photographic head, with CCD 23
Center is that zero sets up XY coordinate system, at a certain distance as radius (wherein, this distance
Obtain according to actual photographic head measurement data), measurement draws and is perpendicular to cam lens to external diffusion
(i.e. the angle of human eye or face and display screen vertical direction is not less than 0 degree and to be not more than to 0-10 degree angle
10 degree) time, the distance of image space range coordinate initial point on CCD 23.Similarly, measure successively
Acquisition is perpendicular to cam lens, and to external diffusion 10-25 degree angle, (i.e. human eye or face is vertical with display screen
The angle in direction is more than 10 degree and no more than 25 degree), 25-40 degree angle (i.e. human eye or face with
The angle of display screen vertical direction is more than 25 degree and no more than 40 degree), 40-60 degree angle (i.e. people
The angle of eye or face and display screen vertical direction is more than 40 degree and no more than 60 degree) time, at CCD
The distance of image space range coordinate initial point on 23, final obtain multiple regions 24 as shown in Figure 4,
25、26、27.Accordingly, may determine that human eye or face and display according to the position data of human eye or face
The angle of screen vertical direction.
In this, when angle angle difference, the brightness offset value that display screen obtains is the most different.
Wherein, angle with the relation of brightness of display screen offset is: when angle is not less than 0 degree and little
In 10 degree time, brightness of display screen offset is set to 0；And/or, when angle is not more than 10 degree and not
During more than 25 degree, brightness of display screen offset is set to the 50% of Benchmark brightness value；And/or, work as folder
Angle is for more than 25 degree and when no more than 40 degree, and brightness of display screen offset is set to Benchmark brightness value
30%；And/or, when angle is more than 40 degree and no more than 60 degree, brightness of display screen offset sets
It is set to the 20% of Benchmark brightness value；Wherein, Benchmark brightness value is to determine according to current environmental light brightness value
Brightness of display screen value.
Additionally, in this step, calculate the back facet current value needed for obtaining brightness of display screen offset and may is that
This brightness of display screen offset is scaled this brightness of display screen of acquisition by the backlight number according to display screen
Back facet current value needed for offset.Implement the conventional techniques means belonging to those skilled in the art,
Implement the protection domain being not intended to limit the present invention, repeat no more here.
Step 14: according to benchmark backlight data and the backlight illumination compensating backlight data regulation display screen.
The backlight illumination according to benchmark backlight data with compensation backlight data regulation display screen in this step
Particularly as follows: the benchmark backlight data determined to be added the backlight number obtaining display screen with compensation backlight data
According to, the backlight illumination of display screen is regulated according to the backlight data of display screen.
In an embodiment, the benchmark backlight data determined and compensation backlight data are respectively according to step
The brightness of display screen values back facet current value that obtains of conversion that 11 obtain and the display screen obtained according to step 13
The back facet current value that brightness offset value conversion obtains.Therefore, benchmark backlight data and compensation backlight data phase
The backlight data adding the display screen obtained is back facet current value.According to this back facet current value regulation display screen
Backlight illumination.
In another embodiment, the benchmark backlight data determined and compensation backlight data are respectively according to step
The 11 brightness of display screen values obtained and the brightness of display screen offset obtained according to step 13.Therefore, base
Quasi-backlight data and the backlight data compensating the display screen that backlight data addition obtains are brightness value.According to aobvious
This brightness value is scaled the back facet current value obtained needed for this brightness value by the backlight number of display screen.According to
The backlight illumination of this back facet current value regulation display screen.Wherein, according to the backlight number of display screen by bright
Angle value is scaled the back facet current value of correspondence, implements the conventional techniques hands belonging to those skilled in the art
Section, implements the protection domain being not intended to limit the present invention, repeats no more here.
As it is shown on figure 3, the device regulating brightness of display screen that present pre-ferred embodiments provides at least includes
Benchmark backlight processing module, recognition processing module and backlight adjustment module；Wherein,
Benchmark backlight processing module, is used for when the environment bright angle value residing for display screen exceedes setting value,
The benchmark backlight data of display screen is obtained according to current environmental light brightness value；
Recognition processing module, for obtaining the positional number of the identification information in the image that display screen gathers
According to, and the compensation backlight data of display screen is determined according to position data；
Backlight adjustment module, for according to benchmark backlight data and the back of the body compensating backlight data regulation display screen
Brightness.
In preferred embodiment, said apparatus also includes image capture module, for gathering in the face of display screen
Image.Specifically, the device of the regulation brightness of display screen that the present embodiment provides such as is arranged at movement
Terminal, the front-facing camera of image capture module for example, mobile terminal, or can rotate to mobile whole
The photographic head of this one side of the display screen of end, for the image in Real-time Collection photographic head front, and delays image
Deposit to memory area.In this, image capture module is as a example by front-facing camera.Additionally, when preposition shooting
Head is when display backlight regulates, and for saves energy, front-facing camera is not at full duty,
Can be to utilize interleaved mode, by a kind of collection in three kinds of pixels of red, green, blue in the face of display
Screen, thus reduce the line number of scanning, it is achieved reducing the purpose of power consumption, front-facing camera is used for carrying on the back simultaneously
During light regulation, the image of collection does not show at display screen, is merely stored in memory area.But,
This is not limited by the present invention.
In the present embodiment, utilize ambient light sensor monitoring of environmental brightness, when ambient light sensor is supervised
When the environment bright angle value recorded exceedes setting value, show environmental light brightness to be enough to eye recognition and move
The display information of terminal impacts, and now starts front-facing camera shooting image.But, the present invention
This is not limited.In other embodiments, front-facing camera also can be used to judge environmental light brightness.Its
In, the setting value of environmental light brightness is the setting value of environmental light brightness set in advance, here can be by moving
Dynamic manufacturer terminal presets.
In the present embodiment, benchmark backlight processing module is previously stored with environment bright angle value and display screen
The corresponding relation of brightness value, benchmark backlight processing module specifically for:
The brightness of display screen value that current environmental light brightness value is corresponding is searched according to the corresponding relation pre-set,
And calculate the back facet current value obtained needed for brightness of display screen value, using this back facet current value as display screen
Benchmark backlight data；Or,
The brightness of display screen value that current environmental light brightness value is corresponding is searched according to the corresponding relation pre-set,
Using the brightness of display screen value that finds out as the benchmark backlight data of display screen.
Wherein, the concrete mode of back facet current value it is scaled to about brightness of display screen value with said method institute
State, therefore repeat no more in this.
In the present embodiment, recognition processing module, extracts image capture module collection from memory area in real time
The image of display screen faced by obtaining, identifies the position of image identification information, obtains the mark identified
The position data of information, and the compensation backlight of display screen is determined according to the position data of the identification information obtained
Data.Wherein, identification information is as a example by human eye or face.Additionally, about compensating obtaining of backlight data
The process that takes is with described in said method, therefore repeats no more in this.
In the present embodiment, backlight adjustment module, for the environmental light brightness obtained at ambient light sensor
On the basis of value adjusts brightness of display screen, further according to the position data of identification information (such as human eye or face)
The backlight that (mainly human eye or face and the angle of display screen vertical direction) continues to adjust display screen is bright
Degree.That is, backlight adjustment module, according to the display screen obtained by benchmark backlight data and compensation backlight data
Backlight data, be automatically adjusted the backlight illumination of display screen.
Specifically, in an embodiment, benchmark backlight processing module is obtained by ambient light sensor
Environment bright angle value determines the brightness of display screen value of a benchmark, calculates needed for obtaining this brightness of display screen value
Back facet current value (i.e. benchmark back facet current value).Recognition processing module is according to human eye or the position of face
Data obtain the angle of human eye or face and display screen vertical direction, when this angle, the display screen of measurement
Brightness can reduce, and according to the degree of luminance-reduction, the brightness to display screen compensates, i.e. according to presetting
The corresponding relation of angle and brightness of display screen offset, determine the brightness of display screen that the angle obtained is corresponding
Offset, calculates the current value (i.e. compensating back facet current value) obtained needed for this brightness of display screen offset.
The display screen compensated due to human eye or face location is needed the current value of increase (i.e. by backlight adjustment module
Compensate back facet current value) increase in the middle of the former (i.e. benchmark back facet current value), it is adjusted display screen
Backlight data.In this, in order to avoid display backlight current value is excessive, set maximum current value, when
When total back facet current value of display screen arrives maximum current value, back facet current value no longer increases.In other words,
I.e. when benchmark back facet current value and that compensate back facet current value and value are more than maximum current value, with maximum electric
Flow valuve adjusts the backlight illumination of display screen.Wherein, such as can will show according to the backlight number of display screen
Display screen brightness value (or brightness of display screen offset) is converted into acquisition this brightness of display screen value (or display screen
Brightness offset value) needed for back facet current value.
In another embodiment, the environment bright that benchmark backlight processing module is obtained by ambient light sensor
Angle value determines the brightness of display screen value (i.e. benchmark backlight brightness values) of a benchmark.Recognition processing module root
The angle of human eye or face and display screen vertical direction is obtained, at this angle according to human eye or face location data
Time, the brightness of display screen of measurement can reduce, and according to the degree of luminance-reduction, the brightness to display screen is carried out
Compensate, i.e. according to the corresponding relation of the angle preset with brightness of display screen offset, determine the angle obtained
Corresponding brightness of display screen offset.Benchmark backlight brightness values is mended by backlight adjustment module with brightness of display screen
Repay value and be added the backlight brightness values (i.e. as the backlight data of display screen) obtaining display screen, calculate and obtain
Back facet current value needed for this backlight brightness values.The backlight electric power managing chip of display screen is according to the back of the body obtained
Photocurrent values regulates the backlight illumination of display screen in real time.Similarly, in order to avoid display backlight current value
Excessive, set maximum current value, when total back facet current value of display screen arrives maximum current value, backlight
Current value no longer increases, and i.e. uses maximum current value to adjust the backlight illumination of display screen.
In sum, present pre-ferred embodiments, using front-facing camera as the condition of identification, identifies and obtains mark
The position data of knowledge information (such as human eye or face), according to the position data obtained, determines display screen
Compensation backlight data, and based on environment bright angle value, determine the benchmark backlight data of display screen, according to
Realized for display screen by benchmark backlight data and the backlight data compensating the display screen that backlight data determines
The Intelligent adjustment of brightness.
Present pre-ferred embodiments passes through identification marking information (such as human eye or face) relative to display screen
Position to compensate because user is different and cause what brightness of display screen reduced to ask to the observation place of display screen
Topic, it is achieved that adjust the brightness of display screen according to the position of environmental light brightness and identification information in time, thus
Ensure that user also is able to see that display screen shows well under the conditions of stronger external ambient light
Content, improve user and watch effect and the experience of display screen.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.This
Bright it is not restricted to the described embodiments, the simply explanation present invention's described in above-described embodiment and description
Principle, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications,
These changes and improvements both fall within scope of the claimed invention.
Claims (10)
1. the method regulating brightness of display screen, it is characterised in that including:
When the environment bright angle value residing for display screen exceedes setting value, obtain according to current environmental light brightness value
Take the benchmark backlight data of display screen；
The position data of the identification information in the image that display screen faced by obtaining gathers, and according to described position
Data determine the compensation backlight data of display screen；
Backlight illumination according to described benchmark backlight data with described compensation backlight data regulation display screen.
2. the method for claim 1, it is characterised in that the method also includes: pre-set
Environment bright angle value and the corresponding relation of brightness of display screen value；
The described benchmark backlight data according to current environmental light brightness value acquisition display screen includes:
The brightness of display screen value that current environmental light brightness value is corresponding is searched according to the corresponding relation pre-set,
And calculate the back facet current value obtained needed for described brightness of display screen value, using this back facet current value as described
The benchmark backlight data of display screen；Or,
The brightness of display screen value that current environmental light brightness value is corresponding is searched according to the corresponding relation pre-set,
Using the brightness of display screen value that finds out as the benchmark backlight data of described display screen.
3. the method for claim 1, it is characterised in that described true according to described position data
The compensation backlight data determining display screen includes:
The angle of described identification information and display screen vertical direction is obtained, according in advance according to described position data
If the corresponding relation of angle and brightness of display screen offset, determine that the display screen that the angle obtained is corresponding is bright
Degree offset, calculates the back facet current value obtained needed for described brightness of display screen offset, by this backlight electricity
Flow valuve is as the compensation backlight data of described display screen；Or,
The angle of described identification information and display screen vertical direction is obtained, according in advance according to described position data
If the corresponding relation of angle and brightness of display screen offset, determine that the display screen that the angle obtained is corresponding is bright
Degree offset, using this brightness of display screen offset as the compensation backlight data of described display screen.
4. method as claimed in claim 3, it is characterised in that described angle is mended with brightness of display screen
The relation repaying value is:
When angle is not less than 0 degree and no more than 10 degree, brightness of display screen offset is set to 0；
And/or,
When angle is more than 10 degree and no more than 25 degree, it is bright that brightness of display screen offset is set to benchmark
The 50% of angle value；And/or,
When angle is more than 25 degree and no more than 40 degree, it is bright that brightness of display screen offset is set to benchmark
The 30% of angle value；And/or,
When angle is more than 40 degree and no more than 60 degree, it is bright that brightness of display screen offset is set to benchmark
The 20% of angle value；
Wherein, described Benchmark brightness value is the brightness of display screen value determined according to current environmental light brightness value.
5. the method for claim 1, it is characterised in that described acquisition is in the face of display screen collection
Image in identification information position data before, also include: utilize interlace mode, by red,
A kind of in three kinds of pixels green, blue gathers described in the face of the image of display screen.
6. the device regulating brightness of display screen, it is characterised in that including:
Benchmark backlight processing module, is used for when the environment bright angle value residing for display screen exceedes setting value,
The benchmark backlight data of display screen is obtained according to current environmental light brightness value；
Recognition processing module, for obtaining the positional number of the identification information in the image that display screen gathers
According to, and the compensation backlight data of display screen is determined according to described position data；
Backlight adjustment module, for aobvious with the regulation of described compensation backlight data according to described benchmark backlight data
The backlight illumination of display screen.
7. device as claimed in claim 6, it is characterised in that: in described benchmark backlight processing module
It is previously stored with the corresponding relation of environment bright angle value and brightness of display screen value；
Described benchmark backlight processing module specifically for:
The brightness of display screen value that current environmental light brightness value is corresponding is searched according to the corresponding relation pre-set,
And calculate the back facet current value obtained needed for described brightness of display screen value, using this back facet current value as described
The benchmark backlight data of display screen；Or,
The brightness of display screen value that current environmental light brightness value is corresponding is searched according to the corresponding relation pre-set,
Using the brightness of display screen value that finds out as the benchmark backlight data of described display screen.
8. device as claimed in claim 6, it is characterised in that: described recognition processing module is specifically used
In:
The angle of described identification information and display screen vertical direction is obtained, according in advance according to described position data
If the corresponding relation of angle and brightness of display screen offset, determine that the display screen that the angle obtained is corresponding is bright
Degree offset, calculates the back facet current value obtained needed for described brightness of display screen offset, by this backlight electricity
Flow valuve is as the compensation backlight data of described display screen；Or,
The angle of described identification information and display screen vertical direction is obtained, according in advance according to described position data
If the corresponding relation of angle and brightness of display screen offset, determine that the display screen that the angle obtained is corresponding is bright
Degree offset, using this brightness of display screen offset as the compensation backlight data of described display screen.
9. device as claimed in claim 8, it is characterised in that: described angle is mended with brightness of display screen
The relation repaying value is:
When angle is not less than 0 degree and no more than 10 degree, brightness of display screen offset is set to 0；
And/or,
When angle is more than 10 degree and no more than 25 degree, it is bright that brightness of display screen offset is set to benchmark
The 50% of angle value；And/or,
When angle is more than 25 degree and no more than 40 degree, it is bright that brightness of display screen offset is set to benchmark
The 30% of angle value；And/or,
When angle is more than 40 degree and no more than 60 degree, it is bright that brightness of display screen offset is set to benchmark
The 20% of angle value；
Wherein, described Benchmark brightness value is the brightness of display screen value determined according to current environmental light brightness value.
10. device as claimed in claim 6, it is characterised in that: also include image capture module, use
In utilizing interlace mode, described in the face of display by a kind of collection in three kinds of pixels of red, green, blue
The image of screen.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510128225.XA CN106157926A (en) | 2015-03-23 | 2015-03-23 | A kind of method and device regulating brightness of display screen |
| PCT/CN2015/089359 WO2016150112A1 (en) | 2015-03-23 | 2015-09-10 | Method and apparatus for adjusting brightness of display screen |
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| CN201510128225.XA CN106157926A (en) | 2015-03-23 | 2015-03-23 | A kind of method and device regulating brightness of display screen |
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| WO (1) | WO2016150112A1 (en) |
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| CN109859718A (en) * | 2018-12-28 | 2019-06-07 | 维沃移动通信有限公司 | Screen brightness regulation method and terminal device |
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| CN114927092A (en) * | 2022-05-30 | 2022-08-19 | 卡莱特云科技股份有限公司 | Method, device and system for correcting visual angle difference of LED display screen |
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| WO2016150112A1 (en) | 2016-09-29 |
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