CN105280159B - The backlight adjusting method and its display device of a kind of display device - Google Patents
The backlight adjusting method and its display device of a kind of display device Download PDFInfo
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- CN105280159B CN105280159B CN201410374560.3A CN201410374560A CN105280159B CN 105280159 B CN105280159 B CN 105280159B CN 201410374560 A CN201410374560 A CN 201410374560A CN 105280159 B CN105280159 B CN 105280159B
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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
- G09G3/22—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 using controlled light sources
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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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- 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 present invention relates to electronic technology field, there is provided a kind of backlight adjusting method of display device, including：Current environment brightness is detected by the light sensor of the display device, obtains photosensitive brightness value；Second brightness value of the current environment that the first brightness value of the current environment detected according to the first imaging sensor of the photosensitive brightness value, the display device and the second imaging sensor of the display device detect, adjust the backlight illumination of the display device.Present invention also offers a kind of display device, it is controlled as stated above, the accurate judgement to ambient light can be achieved in the present invention, and Consumer's Experience is good.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of backlight adjusting method of display device and its display to set
It is standby.
Background technology
Present mobile terminal device has the function of automatically adjusting screen backlight brightness, generally use light as mobile phone
Dependent sensor is realized.Light sensor adjusts screen intensity by perceiving current environmental light brightness, when environmental light intensity, carries
High screen intensity, when ambient light is weak, reduce screen intensity.
In process of the present invention is realized, inventor has found that there are the following problems in the prior art：
Light sensor is influenceed by factors such as open-celled structure, glass transmission rate, lightwave spectrum differences, can not be under dark situation
True reflection human eye perceives bright.
The content of the invention
For overcome in the prior art light sensor by factor shadows such as open-celled structure, glass transmission rate, lightwave spectrum differences
Ring, it is bright can not truly reflect that human eye perceives under dark situation, and the problems such as the data error collected is very big, implementation of the invention
On the one hand example provides a kind of backlight adjusting method of display device, including：
Current environment brightness is detected by the light sensor of the display device, obtains photosensitive brightness value；
The first of the current environment detected according to the first imaging sensor of the photosensitive brightness value, the display device is bright
Second brightness value of the current environment of the second imaging sensor of angle value and display device detection, adjusts the display
The backlight illumination of equipment.
On the other hand, the embodiment of the present invention additionally provides a kind of display device, the display device include light sensor,
First imaging sensor and the second imaging sensor, including：
Receiving module, the photosensitive brightness value obtained for receiving the light sensor detection current environment brightness；
Processing module, for the photosensitive brightness value, the described first image sensor received according to the receiving module
Second brightness value of the first brightness value of the current environment of detection and the current environment of second imaging sensor detection,
Adjust the backlight illumination of the display device.
, can not be in dim light because light sensor is influenceed by factors such as open-celled structure, glass transmission rate, lightwave spectrum differences
Truly reflection human eye perceives light under environment, and the current environment brightness value of the acquisition of imaging sensor is sensitive under low light environment
And stably, can accurately catch the trickle change of current environment light, therefore, the embodiment of the present invention according to photosensitive brightness value,
And the first imaging sensor, the current environment brightness value of the second imaging sensor detection of display device, adjust display device
Backlight illumination, so, the current environment detected with reference to photosensitive brightness value and the first imaging sensor, the second imaging sensor is bright
Angle value, the true brightness value of current environment can be more reacted, accordingly adjustably backlight illumination is more suitable for human eye viewing, improves user
Experience.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the schematic flow sheet of the first embodiment of the backlight adjusting method of display device of the present invention；
Fig. 2 is the schematic flow sheet of the second embodiment of the backlight adjusting method of display device of the present invention；
Fig. 3 is the schematic flow sheet of the 3rd embodiment of the backlight adjusting method of display device of the present invention；
Fig. 4 is the schematic flow sheet of the fourth embodiment of the backlight adjusting method of display device of the present invention；
Fig. 5 is the schematic flow sheet of the 5th embodiment of the backlight adjusting method of display device of the present invention；
Fig. 6 is the structural representation of the first embodiment of the display device of the present invention；
Fig. 7 is the structural representation of the 3rd embodiment of the display device of the present invention；
Fig. 8 is the structural representation of the 5th embodiment of the display device of the present invention.
Embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with
Drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Fig. 1 is refer to, is the schematic flow sheet of the first embodiment of the backlight adjusting method of the display device of the present invention.Should
Backlight adjusting method includes：
Step S11, current environment brightness is detected by the light sensor of display device, obtains photosensitive brightness value.
The light sensor can be the acquiescence unlatching of display device backstage or be to detect that display device backlight is opened
It is being automatically turned on after opening or be that unlatching is operated by User Defined.
Step S12, the first of the current environment detected according to the first imaging sensor of photosensitive brightness value, display device are bright
Second brightness value of the current environment of the second imaging sensor of angle value and display device detection, adjust the back of the body of display device
Brightness.
The first imaging sensor and the second imaging sensor of display device can start simultaneously, with light sensor simultaneously
The light levels of current environment light are detected, to save detection time, the step before saving backlight regulation, the very first time is
User provides accurate backlight illumination；
The first imaging sensor and the second imaging sensor of display device can also start successively, respectively with light sensor
Device detects to current environment light.To save system resource, equipment energy consumption is reduced.In the present embodiment, the first image passes
Sensor and the second imaging sensor are to start successively.
In the present embodiment, if one of the first imaging sensor and the second imaging sensor can not normally start, use
The light levels of normal imaging sensor and light sensor detection current environment light can be started；If the first imaging sensor and
Second imaging sensor can not normally start, then not adjusting backlight luminance, and prompt window is ejected in display device screen,
User is reminded to check whether current display setup state is normal.
Camera sensor isp (camera sensing device image-signal processor) can provide one on current environment
The parameter value (i.e. the first brightness value or the second brightness value) of brightness：Camera luma (shooting brightness).Camera luma values exist
Camera (camera) module is mainly used in calculating aperture time.Here we can be using current camera luma values as figure
The current environment brightness value detected as sensor.
Camera luma values are sensitive under low light environment and stably, can accurately catch the trickle of current environment light
Change, feedback is rapid, reliability is high, by camera luma values light sensor can be aided in become clear current environment light
Degree makes correct judgement.
In the present embodiment, the preposition imaging sensor in the first imaging sensor preferred display device, the second image pass
Sensor is the rearmounted imaging sensor on display device, and by taking mobile phone as an example, described first image sensor can be for before mobile phone
The imaging sensor of camera is put, second imaging sensor can be the imaging sensor of the rear camera of mobile phone.One
As in the case of, the eyes of preposition imaging sensor and user are in same lightness environment, therefore, are passed through preposition image and are passed
The current environment brightness value of sensor collection, more can accurately obtain the environmental light brightness that eyes of user is perceived, according to preposition image
The ambient brightness value that sensor obtains can bring more preferably Consumer's Experience to adjust backlight illumination.Meanwhile rearmounted image passes
Sensor auxiliary front mounted imaging sensor carries out auxiliary detection to current environment brightness, display device is had ambient brightness overall
Judge, prevent from judging situation by accident caused by ambient lighting is uneven, improve brightness detection reliability.
, can not be in dim light because light sensor is influenceed by factors such as open-celled structure, glass transmission rate, lightwave spectrum differences
Truly reflection human eye perceives light under environment, and the current environment brightness value of the acquisition of imaging sensor is sensitive under low light environment
And stably, can accurately catch the trickle change of current environment light, therefore, the embodiment of the present invention according to photosensitive brightness value,
And the first imaging sensor, the current environment brightness value of the second imaging sensor detection of display device, adjust display device
Backlight illumination, so, the current environment detected with reference to photosensitive brightness value and the first imaging sensor, the second imaging sensor is bright
Angle value, the true brightness value of current environment can be more reacted, accordingly adjustably backlight illumination is more suitable for human eye viewing, improves user
Experience.Meanwhile when one of described first image sensor and the second imaging sensor can not normally start, can be used can be normal
The light levels of the imaging sensor of work and light sensor detection current environment light, make full use of the hardware of display device to provide
Source, further increase the reliability of ambient brightness detection
Fig. 2 is refer to, is the schematic flow sheet of the second embodiment of the backlight adjusting method of the display device of the present invention.Should
Backlight adjusting method includes：
Step S21, current environment brightness is detected by the light sensor of display device, obtains photosensitive brightness value.
The light sensor can be the acquiescence unlatching of display device backstage or be to detect that display device backlight is opened
It is being automatically turned on after opening or be that unlatching is operated by User Defined.
Step S22, according to photosensitive brightness value, and current environment brightness value, the backlight illumination of the display device is adjusted,
The current environment brightness value is the maximum in the first brightness value and the second brightness value.
Current environment brightness value can be each value simultaneously of the first brightness value and the second brightness value once, and compare to obtain
Higher value；It can also be that the first brightness value and each value simultaneously of the second brightness value are multiple, and all values are compared what is obtained
Maximum；If can also be, the dry values for being taken the first brightness value are taken the mean, if the dry values that the second brightness value is taken are made even
Mean, the higher value that above-mentioned two average is compared to obtain.
In the present embodiment, each value 8 times simultaneously of first brightness value and the second brightness value, Selecting time at intervals of
50ms, take larger in 8 numerical value in the first brightness value 4 and calculate average, be defined as the first brightness average, take second
4 larger in 8 numerical value and average is calculated in brightness value, be defined as the second brightness average, current environment brightness value is
First brightness average is compared with the second brightness average to obtained higher value.
Using the maximum of the first brightness value and the second brightness value as current environment brightness value, and according to photosensitive brightness value and
Current environment brightness value adjusting backlight luminance, the backlight illumination is can guarantee that in the case of current maximum ambient brightness and supply user
Normal use, lift user experience；Meanwhile by being made with the higher value of the first average brightness and the second average brightness
For the scheme of ambient brightness value, can effectively avoid because detection of the factors such as instantaneous flash to ambient light light levels interferes,
Improve the acquisition reliability of current environment brightness value.
Fig. 3 is refer to, is the schematic flow sheet of the 3rd embodiment of the backlight adjusting method of the display device of the present invention.Should
Backlight adjusting method includes：
Step S31, current environment brightness is detected by the light sensor of display device, obtains photosensitive brightness value.
The light sensor can be the acquiescence unlatching of display device backstage or be to detect that display device backlight is opened
It is being automatically turned on after opening or be that unlatching is operated by User Defined.
Step S32, determine that the photosensitive brightness value is located within default photosensitive brightness range, pass through the light sensor
Device detects the change of current environment brightness, obtains photosensitive brightness changing value.
Default photosensitive brightness range is specially the brightness range corresponding to low light environment, its specific value range can be [1,
20)lux.So-called photosensitive brightness changing value was the photosensitive brightness value that light sensor currently obtains and upper (cycle in a cycle
Can according to circumstances predefine) obtain photosensitive brightness value difference.It is photosensitive bright being periodically detected by light sensor
After angle value is only once or continuous several times fall into default photosensitive brightness range, you can determine photosensitive brightness value positioned at default photosensitive
Within brightness range.In this step, the photosensitive brightness value continuous several times (such as 8 times) that preferably light sensor is periodically detected are fallen into
After default photosensitive brightness range, it is determined that photosensitive brightness value is located at default photosensitive brightness range, so as to avoid due to photosensitive
Shake brings the frequent opening and closing of imaging sensor.
Step S33, by photosensitive brightness changing value compared with first threshold, if photosensitive brightness changing value is more than first threshold,
Step S34 is then performed, if being less than first threshold, performs step S35.
In this step, if photosensitive brightness changing value is more than 10lux, it is determined that the ambient brightness that display device is presently in
Changed, the camera luma values for being used as the first brightness value, the second brightness value obtained by camera sensor isp,
And backlight illumination is adjusted based on current environment brightness value, so that current backlight brightness is more suitable for the use ring of active user
Border.
Step S34, current environment brightness is detected by described first image sensor and second imaging sensor, obtained
To current environment brightness value, according to current environment brightness value adjusting backlight luminance.
In this step, current environment brightness value is successfully being obtained by the first imaging sensor and the second imaging sensor
Afterwards, can be according only to current environment brightness value adjusting backlight luminance, can also be according to the first brightness value, the second brightness value and current
Photosensitive brightness value adjusting backlight luminance.
Step S35, keep current backlight brightness constant.
In the present embodiment, ongoing camera auxiliary can be stopped immediately in the case where not needing automatic backlight
Judge that (so-called unlatching camera auxiliary judgments are opened camera sensor isp and obtained as ambient brightness value
Camera luma values).The situation of automatic backlight is not needed wherein comprising following several：Mobile phone is closed certainly automatically in being currently running
Dynamic backlight；Screen state enters dark screen, the screen that either goes out (go out manually screen or time-out go out screen)；Proximity transducer state, which switches to, to be leaned on
Closely；Mobile phone continuation of the journey state switches to ultra electric power-saving mode, meanwhile, do not start camera auxiliary under ultra electric power-saving mode without exception and sentence
It is disconnected；Into talking state, calling, incoming call, answer and do not start camera auxiliary judgments under state；When carrying out auxiliary judgment
Generation states above, it is necessary to when stopping auxiliary judgment immediately.Any of the above-described situation is not turned on camera auxiliary judgments.
Because long-time opens the first imaging sensor, the second imaging sensor can consume display device quickly and be particularly
The electric energy of mobile phone, therefore, the embodiment of the present invention periodically obtain photosensitive brightness value by light sensor, are located in photosensitive brightness value
Default photosensitive brightness range, and when photosensitive brightness changing value is more than first threshold, just open the first imaging sensor, the second figure
Current environment brightness is obtained as sensor acquisition current environment brightness value, and in the first imaging sensor, the second imaging sensor
After being worth successfully, it is turned off, with the mesh for reaching power saving and avoiding frequently opening the first imaging sensor, the second imaging sensor
's.
Fig. 4 is refer to, is the schematic flow sheet of the fourth embodiment of the backlight adjusting method of the display device of the present invention.Should
Backlight adjusting method includes：
Step S41, current environment brightness is detected by the light sensor of display device, obtains photosensitive brightness value.
The light sensor can be the acquiescence unlatching of display device backstage or be to detect that display device backlight is opened
It is being automatically turned on after opening or be that unlatching is operated by User Defined.
Step S42, if photosensitive brightness value by outside default photosensitive brightness range enter default photosensitive brightness range it
It is interior, the first imaging sensor and the second imaging sensor detection current environment brightness are opened, obtains current environment brightness value, and root
According to current environment brightness value adjusting backlight luminance.
Wherein, default photosensitive brightness range is specially the brightness range corresponding to low light environment, and its specific value range can
For [1,17) lux.In this step, " the first imaging sensor and the second imaging sensor detection current environment brightness are opened, is obtained
Current environment brightness value, and according to current environment brightness value adjusting backlight luminance " and the step S34 phases being hereinbefore discussed in detail
Together, therefore will not be described here.
After it is determined that photosensitive brightness value is located within default photosensitive brightness range (i.e. under low light environment), by default light
Quick brightness range redefine to [1,20) lux, can effectively prevent because ambient brightness causes display device not close to 17lux
Switch repeatedly under same light environment, cause to bear to system.
Further, when confirming that display device is currently located under low light environment, corresponding camera sensor are opened
Isp simultaneously obtains the camera luma values as ambient brightness value, and the change of current environment brightness is detected by the light sensor
Change, obtain photosensitive brightness changing value.If photosensitive brightness changing value is more than first threshold, pass through the first imaging sensor and the second figure
As sensor detection current environment brightness, current environment brightness value is obtained, according to current environment brightness value adjusting backlight luminance；If
Photosensitive brightness changing value is less than first threshold, keeps current backlight brightness constant.
Further, if light sensor detect photosensitive brightness value appoint and do not fall within once [1,20) in the range of lux, then
Judge that current environment has exited low light environment, and recover the default photosensitive brightness range values [1,17) lux.
By the real-time detection to photosensitive brightness value, enter in the photosensitive brightness value of confirmation within default photosensitive brightness range
The very first time, start camera auxiliary judgments simultaneously backlight illumination is adjusted, to user with fast and accurately usage experience.
Fig. 5 is refer to, is the schematic flow sheet of the 5th embodiment of the backlight adjusting method of the display device of the present invention.Should
Backlight adjusting method includes：
Step S51, current environment brightness is detected by the light sensor of display device, obtains photosensitive brightness value.
The light sensor can be the acquiescence unlatching of display device backstage or be to detect that display device backlight is opened
It is being automatically turned on after opening or be that unlatching is operated by User Defined.
Step S52, determine that photosensitive brightness value is more than the higher limit of default photosensitive brightness range, then based on photosensitive brightness
Value, adjust the backlight illumination of display device；
In the present embodiment, when the photosensitive brightness value is more than the upper limit of the default photosensitive brightness range, in order to
Simplify and judge flow, save system resource, close camera luma auxiliary judgments, backlight illumination is entered by light sensor
Row control.
Step S53, determine that photosensitive brightness value is less than the lower limit of default photosensitive brightness range, then passed by the first image
Sensor and the second image sensor detection current environment brightness, obtain current environment brightness value, if current environment brightness value is less than the
Two threshold values, then using default minimum backlight brightness as current backlight brightness.
When the photosensitive brightness value is not more than the upper limit of the default photosensitive brightness range, the light is determined whether
Whether quick brightness value is less than the lower limit of the default photosensitive brightness range, in the present embodiment, takes the lower limit to tend to
0lux, when it is 0lux that light sensor, which detects current photosensitive brightness value, passed by the first imaging sensor and the second image
Sensor detects current environment brightness value, judges whether current environment brightness value is less than the second threshold values, in the present embodiment, described the
Two threshold values are that use environment is brightness value corresponding to total darkness environment, if so, the use environment for then judging current display setup is complete
Darkness environment, current backlight brightness is used as using minimum backlight brightness.Similarly, in order to further avoid photosensitive shake, judging to work as
The use environment of preceding display device be total darkness environment after, the lower limit of the photosensitive brightness range is redefined as 2lux.
By being detected in real time to photosensitive brightness value, when the photosensitive brightness value is located at the default photosensitive brightness model
When outside enclosing, there is provided corresponding solution, the effectively save display device energy of energy, save system resource.
The embodiment of the backlight adjusting method of the display device of the present invention is discussed in detail above.It will correspond to below
The device (i.e. display device) of the above method is further elaborated.Wherein, display device can be mobile phone, tablet personal computer, MP3,
The display device with backlight regulatory function such as MP4 or notebook computer.
Fig. 6 is refer to, is the structural representation of the first embodiment of the display device of the present invention.
Display device 100 includes：Light sensor 110, the first imaging sensor 120, the second imaging sensor 130, connect
Receive module 140 and processing module 150.
Wherein, receiving module 140, it is connected respectively with light sensor 110 and processing module 150, for receiving the light
The photosensitive brightness value that dependent sensor detection current environment brightness obtains.
Processing module 150, connect respectively with the first imaging sensor 120, the second imaging sensor 130 and receiving module 140
Connect, photosensitive brightness value, the first imaging sensor 120 of the current environment for being detected according to light sensor 110 detect
Current environment the first brightness value and the second brightness value of current environment for detecting of the second imaging sensor 130, regulation
The backlight illumination of display device 100.
The first imaging sensor 120 and the second imaging sensor 130 of display device 100 can start simultaneously, and photosensitive
Sensor 110 detects to the light levels of current environment light simultaneously, to save detection time, saves the step before backlight is adjusted
Suddenly, the very first time provides the user accurate backlight illumination；
The first imaging sensor 120 and the second imaging sensor 130 of display device 100 can also start successively, respectively
Current environment light is detected with light sensor 110.To save system resource, equipment energy consumption is reduced.In the present embodiment
In, the first imaging sensor 120 and the second imaging sensor 130 are to start successively.
In the present embodiment, if one of the first imaging sensor 120 and the second imaging sensor 130 can not normally start,
Then use can start the light levels that normal imaging sensor detects current environment light with light sensor 110；If the first figure
As the imaging sensor 130 of sensor 120 and second can not normally start, then not adjusting backlight luminance, and in display device screen
Prompt window is ejected on curtain, reminds user to check whether current display setup state is normal.
Camera sensor isp (camera sensing device image-signal processor) can provide one on current environment
The parameter value (i.e. the first brightness value or the second brightness value) of brightness：Camera luma (shooting brightness).Camera luma values exist
Camera (camera) module is mainly used in calculating aperture time.Here we can pass camera luma values as image
The current environment brightness value of sensor detection.
Camera luma values are sensitive under low light environment and stably, can accurately catch the trickle of current environment light
Change, feedback is rapid, reliability is high, and light sensor can be aided in current environment light by current camera luma values
Light levels make correct judgement.
In the present embodiment, the first imaging sensor 120 is preferably the preposition imaging sensor on display device 100, the
Two imaging sensors 130 are the rearmounted imaging sensor on display device 100, by taking mobile phone as an example, described first image sensor
Can be the imaging sensor of the front camera of mobile phone, second imaging sensor can be the rear camera of mobile phone
Imaging sensor.Generally, preposition imaging sensor and the eyes of user are in same lightness environment, therefore, are led to
The current environment brightness value of preposition imaging sensor collection is crossed, more can accurately obtain the environment bright that eyes of user is perceived
Degree, more preferably Consumer's Experience can be brought to adjust backlight illumination according to the ambient brightness value that preposition imaging sensor obtains.Together
When, rearmounted imaging sensor auxiliary front mounted imaging sensor carries out auxiliary detection to current environment brightness, makes display device pair
Ambient brightness has overall judgement, prevents from judging situation by accident caused by ambient lighting is uneven, improves brightness detection reliability.
, can not be in dim light because light sensor is influenceed by factors such as open-celled structure, glass transmission rate, lightwave spectrum differences
Truly reflection human eye perceives light under environment, and the current environment brightness value of the acquisition of imaging sensor is sensitive under low light environment
And stably, can accurately catch the trickle change of current environment light, therefore, the embodiment of the present invention according to photosensitive brightness value,
And the first imaging sensor, the current environment brightness value of the second imaging sensor detection of display device, adjust display device
Backlight illumination, so, the current environment detected with reference to photosensitive brightness value and the first imaging sensor, the second imaging sensor is bright
Angle value, the true brightness value of current environment can be more reacted, accordingly adjustably backlight illumination is more suitable for human eye viewing, improves user
Experience.Meanwhile when one of imaging sensor 130 of described first image sensor 120 and second can not normally start, it can make
With can imaging sensor and the light sensor 110 of normal work detect the light levels of current environment light, make full use of display
The hardware resource of equipment 100, further increase the reliability of ambient brightness detection.
As the present invention display device second embodiment, unlike the first embodiment of above-mentioned display device,
The processing module 150 is bright specifically for the photosensitive brightness value according to the receiving module 140 reception, and current environment
Angle value, adjusts the backlight illumination of the display device 100, and the current environment brightness value is first brightness value and described the
Maximum in two brightness values.
Current environment brightness value can be each value simultaneously of the first brightness value and the second brightness value once, and compare to obtain
Higher value；It can also be that the first brightness value and each value simultaneously of the second brightness value are multiple, and all values are compared what is obtained
Maximum；If can also be, the dry values for being taken the first brightness value are taken the mean, if the dry values that the second brightness value is taken are made even
Mean, the higher value that above-mentioned two average is compared to obtain.
In the present embodiment, each value 8 times simultaneously of first brightness value and the second brightness value, Selecting time at intervals of
50ms, take larger in 8 numerical value in the first brightness value 4 and calculate average, be defined as the first brightness average, take second
4 larger in 8 numerical value and average is calculated in brightness value, be defined as the second brightness average, current environment brightness value is
First brightness average is compared with the second brightness average to obtained higher value.
Using the maximum of the first brightness value and the second brightness value as current environment brightness value, and according to photosensitive brightness value and
Current environment brightness value adjusting backlight luminance, the backlight illumination is can guarantee that in the case of current maximum ambient brightness and supply user
Normal use, lift user experience；Meanwhile by being made with the higher value of the first average brightness and the second average brightness
For the scheme of ambient brightness value, can effectively avoid because detection of the factors such as instantaneous flash to ambient light light levels interferes,
Improve the acquisition reliability of current environment brightness value.
Fig. 7 is refer to, is the structural representation of the 3rd embodiment of the display device of the present invention.
Unlike the first embodiment of above-mentioned display device, the processing module 150 includes：
Photosensitive brightness changing value acquiring unit 151, the photosensitive brightness value position detected for determining the light sensor 110
Within default photosensitive brightness range, the change of current environment brightness is detected by the light sensor 110, is obtained photosensitive
Brightness changing value；
Default photosensitive brightness range is specially the brightness range corresponding to low light environment, its specific value range can be [1,
20)lux.So-called photosensitive brightness changing value was the photosensitive brightness value that light sensor currently obtains and upper (cycle in a cycle
Can according to circumstances predefine) obtain photosensitive brightness value difference.It is photosensitive bright being periodically detected by light sensor
After angle value is only once or continuous several times fall into default photosensitive brightness range, you can determine photosensitive brightness value positioned at default photosensitive
Within brightness range.In this step, the photosensitive brightness value continuous several times (such as 8 times) that preferably light sensor is periodically detected are fallen into
After default photosensitive brightness range, it is determined that photosensitive brightness value is located at default photosensitive brightness range, so as to avoid due to photosensitive
Shake brings the frequent opening and closing of imaging sensor.
First adjustment unit 152, if the photosensitive brightness obtained for the photosensitive brightness changing value acquiring unit 151
Changing value is more than first threshold, then is detected currently by described first image sensor 120 and second imaging sensor 130
Ambient brightness, the current environment brightness value is obtained, and according to the current environment brightness value adjusting backlight luminance；If the light
Quick brightness changing value is less than the first threshold, keeps current backlight brightness constant.
In this step, if photosensitive brightness changing value is more than 10lux, it is determined that the ambient brightness that display device is presently in
Changed, the camera luma values for being used as the first brightness value, the second brightness value obtained by camera sensor isp,
And backlight illumination is adjusted based on current environment brightness value, so that current backlight brightness is more suitable for the use ring of active user
Border.
In the present embodiment, front ring is worked as successfully being obtained by the first imaging sensor 120 and the second imaging sensor 130
, can be according only to current environment brightness value adjusting backlight luminance after the brightness value of border, can also be according to the first brightness value, the second brightness
Value and current photosensitive brightness value adjusting backlight luminance.
In the present embodiment, ongoing camera auxiliary can be stopped immediately in the case where not needing automatic backlight
Judge that (so-called unlatching camera auxiliary judgments are opened camera sensor isp and obtained as ambient brightness value
Camera luma values).The situation of automatic backlight is not needed wherein comprising following several：Mobile phone is closed certainly automatically in being currently running
Dynamic backlight；Screen state enters dark screen, the screen that either goes out (go out manually screen or time-out go out screen)；Proximity transducer state, which switches to, to be leaned on
Closely；Mobile phone continuation of the journey state switches to ultra electric power-saving mode, meanwhile, do not start camera auxiliary under ultra electric power-saving mode without exception and sentence
It is disconnected；Into talking state, calling, incoming call, answer and do not start camera auxiliary judgments under state；When carrying out auxiliary judgment
Generation states above, it is necessary to when stopping auxiliary judgment immediately.Any of the above-described situation is not turned on camera auxiliary judgments.
Because long-time opens the first imaging sensor, the second imaging sensor can consume display device quickly and be particularly
The electric energy of mobile phone, therefore, the embodiment of the present invention periodically obtain photosensitive brightness value by light sensor, are located in photosensitive brightness value
Default photosensitive brightness range, and when photosensitive brightness changing value is more than first threshold, just open the first imaging sensor, the second figure
Current environment brightness is obtained as sensor acquisition current environment brightness value, and in the first imaging sensor, the second imaging sensor
After being worth successfully, it is turned off, with the mesh for reaching power saving and avoiding frequently opening the first imaging sensor, the second imaging sensor
's.
It is different from the 3rd embodiment of above-mentioned display device 100 as the fourth embodiment of the display device of the present invention
It is, if the processing module 150 is further used for the photosensitive brightness value of the reception of receiving module 140 by default photosensitive
Enter outside brightness range within default photosensitive brightness range, open described first image sensor 120 and second figure
As the detection current environment brightness of sensor 130, the current environment brightness value is obtained, and adjust according to the current environment brightness value
Save backlight illumination.
Wherein, default photosensitive brightness range is specially the brightness range corresponding to low light environment, and its specific value range can
For [1,17) lux.In this step, " the first imaging sensor and the second imaging sensor detection current environment brightness are opened, is obtained
Current environment brightness value, and according to current environment brightness value adjusting backlight luminance " and the step S34 phases being hereinbefore discussed in detail
Together, therefore will not be described here.
After it is determined that photosensitive brightness value is located within default photosensitive brightness range (i.e. under low light environment), by default light
Quick brightness range redefine to [1,20) lux, can effectively prevent because ambient brightness causes display device not close to 17lux
Switch repeatedly under same light environment, cause to bear to system.
Further, when confirming that display device is currently located under low light environment, corresponding camera sensor are opened
Isp simultaneously obtains the camera luma values as ambient brightness value, and the change of current environment brightness is detected by the light sensor
Change, obtain photosensitive brightness changing value.If photosensitive brightness changing value is more than first threshold, pass through the first imaging sensor and the second figure
As sensor detection current environment brightness, current environment brightness value is obtained, according to current environment brightness value adjusting backlight luminance；If
Photosensitive brightness changing value is less than first threshold, keeps current backlight brightness constant.
Further, if light sensor detect photosensitive brightness value appoint and do not fall within once [1,20) in the range of lux, then
Judge that current environment has exited low light environment, and recover the default photosensitive brightness range values [1,17) lux.
By the real-time detection to photosensitive brightness value, enter in the photosensitive brightness value of confirmation within default photosensitive brightness range
The very first time, start camera auxiliary judgments simultaneously backlight illumination is adjusted, to user with fast and accurately usage experience.
Fig. 8 is refer to, is the structural representation of the 5th embodiment of the display device of the present invention.
Unlike the first embodiment of above-mentioned display device 100, the processing module 150 includes：
Second adjustment unit 153, the photosensitive brightness value for determining the reception of receiving module 140 are more than described pre-
If photosensitive brightness range higher limit, then based on the photosensitive brightness value, adjust the backlight illumination of the display device 100；
3rd adjustment unit 154, the photosensitive brightness value for determining the reception of receiving module 140 are less than described pre-
If photosensitive brightness range lower limit, then detected by described first image sensor 120 and the second image sensor 130
Current environment brightness, the current environment brightness value is obtained, will be default if the current environment brightness value is less than Second Threshold
Minimum backlight brightness as current backlight brightness.
In the present embodiment, when the photosensitive brightness value is more than the upper limit of the default photosensitive brightness range, in order to
Simplify and judge flow, save system resource, close camera luma auxiliary judgments, backlight illumination is entered by light sensor
Row control.
When the photosensitive brightness value is not more than the upper limit of the default photosensitive brightness range, the light is determined whether
Whether quick brightness value is less than the lower limit of the default photosensitive brightness range, in the present embodiment, takes the lower limit to tend to
0lux, when it is 0lux that light sensor, which detects current photosensitive brightness value, pass through the first imaging sensor 120 and the second image
Sensor 130 detects current environment brightness value, judges whether current environment brightness value is less than the second threshold values, in the present embodiment,
Second threshold values is that use environment is brightness value corresponding to total darkness environment, if so, then judging the use of current display setup 100
Environment is total darkness environment, and current backlight brightness is used as using minimum backlight brightness.Similarly, in order to further avoid photosensitive shake,
After judging the use environment of current display setup for total darkness environment, by the lower limit of the photosensitive brightness range redefine for
2lux。
By being detected in real time to photosensitive brightness value, when the photosensitive brightness value is located at the default photosensitive brightness model
When outside enclosing, there is provided corresponding solution, the effectively save display device energy of energy, save system resource.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium
In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
When the embodiment of the present invention refers to the ordinal numbers such as " first ", " second ", unless based on context its express really it is suitable
The meaning of sequence, it should be understood that only play differentiation and be used.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
- A kind of 1. backlight adjusting method of display device, it is characterised in that including：Current environment brightness is detected by the light sensor of the display device, obtains photosensitive brightness value；First brightness of the current environment detected according to the first imaging sensor of the photosensitive brightness value, the display device Second brightness value of the current environment of the second imaging sensor of value and display device detection, adjust the display and set Standby backlight illumination；Wherein, the current environment detected according to the first imaging sensor of the photosensitive brightness value, the display device Second brightness value of the current environment of the second imaging sensor of the first brightness value and display device detection, adjusts institute The backlight illumination of display device is stated, including：According to the photosensitive brightness value, and current environment brightness value, the backlight illumination of the display device is adjusted, it is described current Ambient brightness value is the maximum in first brightness value and second brightness value.
- 2. backlight adjusting method as claimed in claim 1, it is characterised in that it is described according to the photosensitive brightness value, and work as Preceding ambient brightness value, the backlight illumination of the display device is adjusted, including:Determine that the photosensitive brightness value is located within default photosensitive brightness range, front ring is worked as by light sensor detection The change of border brightness, obtain photosensitive brightness changing value；If the photosensitive brightness changing value is more than first threshold, pass through described first image sensor and second image sensing Device detects current environment brightness, obtains the current environment brightness value, and bright according to current environment brightness value regulation backlight Degree；If the photosensitive brightness changing value is less than the first threshold, keep current backlight brightness constant.
- 3. backlight adjusting method as claimed in claim 1, it is characterised in that described according to the photosensitive brightness value, Yi Jisuo Current environment brightness value is stated, adjusts the backlight illumination of the display device, including：If the photosensitive brightness value opens institute by entering outside default photosensitive brightness range within default photosensitive brightness range The first imaging sensor and second imaging sensor detection current environment brightness are stated, obtains the current environment brightness value, And according to the current environment brightness value adjusting backlight luminance.
- 4. described backlight adjusting method as claimed in claim 1, it is characterised in that it is described according to the photosensitive brightness value, and The current environment brightness value, the backlight illumination of the display device is adjusted, including：Determine that the photosensitive brightness value is more than the higher limit of default photosensitive brightness range, then based on the photosensitive brightness value, adjust Save the backlight illumination of the display device；Determine that the photosensitive brightness value is less than the lower limit of default photosensitive brightness range, then pass through described first image sensor Current environment brightness is detected with the second image sensor, the current environment brightness value is obtained, if the current environment brightness Value is less than Second Threshold, then using default minimum backlight brightness as current backlight brightness.
- 5. the backlight adjusting method as described in claim any one of 1-4, it is characterised in that described first image sensor is institute The preposition imaging sensor on display device is stated, second imaging sensor is the rearmounted image sensing on the display device Device.
- 6. a kind of display device, the display device includes light sensor, the first imaging sensor and the second imaging sensor, It is characterised in that it includes：Receiving module, the photosensitive brightness value obtained for receiving the light sensor detection current environment brightness；Processing module, the photosensitive brightness value, described first image sensor for being received according to the receiving module detect Current environment the first brightness value and second imaging sensor detection current environment the second brightness value, regulation The backlight illumination of the display device；The processing module is specifically used for the photosensitive brightness value received according to the receiving module, and current environment brightness Value, adjusts the backlight illumination of the display device, and the current environment brightness value is first brightness value and described second bright Maximum in angle value.
- 7. display device as claimed in claim 6, it is characterised in that the processing module includes:Photosensitive brightness changing value acquiring unit, for determining the photosensitive brightness value of the receiving module reception positioned at default Within photosensitive brightness range, the change of current environment brightness is detected by the light sensor, obtains photosensitive brightness changing value；First adjustment unit, if being more than for the photosensitive brightness changing value that the photosensitive brightness changing value acquiring unit obtains First threshold, then current environment brightness is detected by described first image sensor and second imaging sensor, obtain institute Current environment brightness value is stated, and according to the current environment brightness value adjusting backlight luminance；If the photosensitive brightness changing value is small In the first threshold, keep current backlight brightness constant.
- 8. display device as claimed in claim 6, it is characterised in that if the processing module is further used for the reception mould The photosensitive brightness value that block receives is opened by entering outside default photosensitive brightness range within default photosensitive brightness range Described first image sensor and second imaging sensor detection current environment brightness, obtain the current environment brightness Value, and according to the current environment brightness value adjusting backlight luminance.
- 9. described display device as claimed in claim 6, it is characterised in that the processing module includes：Second adjustment unit, for determining that the photosensitive brightness value that the receiving module receives is more than default photosensitive brightness model The higher limit enclosed, then based on the photosensitive brightness value, adjust the backlight illumination of the display device；3rd adjustment unit, for determining that the photosensitive brightness value that the receiving module receives is less than default photosensitive brightness model The lower limit enclosed, then current environment brightness is detected by described first image sensor and the second image sensor, obtain institute State current environment brightness value, if the current environment brightness value is less than Second Threshold, using default minimum backlight brightness as Current backlight brightness.
- 10. the display device as described in claim any one of 6-9, it is characterised in that described first image sensor is described Preposition imaging sensor on display device, second imaging sensor are the rearmounted image sensing on the display device Device.
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| CN201410374560.3A CN105280159B (en) | 2014-07-31 | 2014-07-31 | The backlight adjusting method and its display device of a kind of display device |
| PCT/CN2015/084822 WO2016015587A1 (en) | 2014-07-31 | 2015-07-22 | Backlight adjustment method for display device, display device, computer program product and computer-readable storage medium |
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| CN201410374560.3A CN105280159B (en) | 2014-07-31 | 2014-07-31 | The backlight adjusting method and its display device of a kind of display device |
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| CN105654923B (en) * | 2016-03-30 | 2018-09-04 | 广东欧珀移动通信有限公司 | A kind of back light brightness regulating method and user terminal |
| US10798373B2 (en) * | 2016-07-22 | 2020-10-06 | Sharp Kabushiki Kaisha | Display correction apparatus, program, and display correction system |
| CN106370296B (en) * | 2016-08-24 | 2018-07-17 | Tcl移动通信科技（宁波）有限公司 | The detection method and system of a kind of mobile terminal optical sensor to ambient light |
| CN106453842B (en) * | 2016-09-13 | 2019-08-09 | 北京松果电子有限公司 | Adjust the method and device of screen intensity |
| CN108986770B (en) * | 2017-06-02 | 2020-11-10 | 广东夏野日用电器有限公司 | Information terminal |
| CN108986726B (en) * | 2017-06-02 | 2020-09-22 | 广东夏野日用电器有限公司 | Information terminal |
| CN108986768B (en) * | 2017-06-02 | 2020-09-22 | 广东夏野日用电器有限公司 | Control method |
| CN107358465B (en) * | 2017-07-12 | 2020-10-30 | 苏州林格商用系统有限公司 | Man-machine interactive automatic display system |
| CN110675839A (en) * | 2019-10-11 | 2020-01-10 | Oppo广东移动通信有限公司 | Screen adjusting method, electronic equipment and related device |
| CN113035144B (en) * | 2019-12-25 | 2022-07-08 | Oppo广东移动通信有限公司 | Method and device for adjusting display parameters, mobile terminal and storage medium |
| CN111489708B (en) * | 2020-06-02 | 2022-05-10 | 上海天马微电子有限公司 | Backlight driving method and driving device, backlight source system and display device |
| CN112291900A (en) * | 2020-10-23 | 2021-01-29 | 一汽奔腾轿车有限公司 | Automatic control system and control method for luminous intensity of automobile signal lamp |
| CN113781969B (en) * | 2021-09-27 | 2024-04-23 | 联想(北京)有限公司 | Backlight adjusting method and device and electronic equipment |
| CN114495862A (en) * | 2022-01-24 | 2022-05-13 | 上海闻泰信息技术有限公司 | Method for acquiring ambient light sensitivity value, electronic device and computer readable storage medium |
| CN114429761B (en) * | 2022-04-01 | 2022-06-03 | 南京有物信息科技有限公司 | Display control method, device and system suitable for multiple terminals |
| CN115150558B (en) * | 2022-09-05 | 2022-11-18 | 深圳比特微电子科技有限公司 | Luminance detection method, control method and device for image pickup device, and medium |
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| US20080078921A1 (en) * | 2006-08-25 | 2008-04-03 | Motorola, Inc. | Multiple light sensors and algorithms for luminance control of mobile display devices |
| CN101136181B (en) * | 2007-09-25 | 2010-08-25 | 京东方科技集团股份有限公司 | Back light source brightness regulating mechanism, method and display apparatus thereof |
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| WO2011137731A2 (en) * | 2011-04-29 | 2011-11-10 | 华为终端有限公司 | Method for controlling light-emitting device in terminal equipment, apparatus thereof and terminal equipment |
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