CN104660766B - The backlight adjusting method and device of a kind of mobile terminal - Google Patents
The backlight adjusting method and device of a kind of mobile terminal Download PDFInfo
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- CN104660766B CN104660766B CN201510097205.0A CN201510097205A CN104660766B CN 104660766 B CN104660766 B CN 104660766B CN 201510097205 A CN201510097205 A CN 201510097205A CN 104660766 B CN104660766 B CN 104660766B
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Abstract
The present invention is applied to technical field of mobile terminals there is provided a kind of backlight adjusting method of mobile terminal and device, including：Pre-set the corresponding screen back light value of different acquisition parameters；When mobile terminal triggering backlight regulation, the camera of the mobile terminal is opened；Obtain the acquisition parameters of the camera；The backlight illumination of the mobile terminal is adjusted into screen back light value corresponding to the acquisition parameters.In the present invention, the screen back light value that mobile terminal needs to adjust is calculated by the use of the camera of mobile terminal as auxiliary lighting apparatus, by increasing capacitance it is possible to increase the accuracy of backlight regulation, reduces the interference that light sensation error band comes, lift the display effect of mobile terminal screen.
Description
Technical field
The invention belongs to the backlight adjusting method and device of technical field of mobile terminals, more particularly to a kind of mobile terminal.
Background technology
At present, automatic backlight regulation turns into one of necessary functions of smart mobile phone, under different ambient light intensities,
The function ensures that screen is under a suitable brightness all the time, so that user sees screen content clearly all the time.Generally, opponent
The backlight adjustment of machine is that ambient light sensor measurement is obtained come what is realized based on the ambient light sensor of interior of mobile phone is arranged on
Varying environment light intensity value can directly correspond to a light-source brightness value, and mobile phone screen light source is adjusted according to the light-source brightness value
Brightness so that realize automatic backlight adjust.
However, by placement direction of the ambient light sensor on cell phone mainboard, the glass of shade ambient light sensor
The influence of many factors such as light transmittance and the structure of mobile phone, material, the ambient light intensity measured by ambient light sensor with it is true
There is difference to a certain extent in real ambient light intensity, cause automatic backlight regulation inaccurate, influence display effect.
The content of the invention
The purpose of the embodiment of the present invention is the backlight adjusting method and device for providing a kind of mobile terminal, it is intended to solve mesh
The automatic backlight regulation of preceding mobile terminal is inaccurate, the problem of influenceing display effect.
The embodiment of the present invention is achieved in that a kind of backlight adjusting method of mobile terminal, including：
Pre-set the corresponding screen back light value of different acquisition parameters；
When mobile terminal triggering backlight regulation, the camera of the mobile terminal is opened；
Obtain the acquisition parameters of the camera；
The backlight illumination of the mobile terminal is adjusted into screen back light value corresponding to the acquisition parameters.
The another object of the embodiment of the present invention is the backlight adjusting means for providing a kind of mobile terminal, including：
Setting unit, for pre-setting the corresponding screen back light value of different acquisition parameters；
Opening unit, for when mobile terminal triggering backlight regulation, opening the camera of the mobile terminal；
Acquiring unit, the acquisition parameters for obtaining the camera；
Adjustment unit, for the backlight illumination of the mobile terminal to be adjusted into screen backlight corresponding to the acquisition parameters
Value.
In embodiments of the present invention, mobile terminal is calculated by the use of the camera of mobile terminal as auxiliary lighting apparatus is needed
The screen back light value to be adjusted, by increasing capacitance it is possible to increase the accuracy of backlight regulation, reduces the interference that light sensation error band comes, and lifting is mobile eventually
Hold the display effect of screen.
Brief description of the drawings
Fig. 1 is the implementation process figure of the backlight adjusting method of mobile terminal provided in an embodiment of the present invention；
Fig. 2 is that the backlight adjusting method S103 of mobile terminal provided in an embodiment of the present invention implements flow chart；
Fig. 3 is that the backlight adjusting method S202 of mobile terminal provided in an embodiment of the present invention implements flow chart；
Fig. 4 is that the backlight adjusting method S104 of mobile terminal provided in an embodiment of the present invention implements flow chart；
Fig. 5 is the structured flowchart of the backlight adjusting means of mobile terminal provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In embodiments of the present invention, mobile terminal is calculated by the use of the camera of mobile terminal as auxiliary lighting apparatus is needed
The screen back light value to be adjusted, by increasing capacitance it is possible to increase the accuracy of backlight regulation, reduces the interference that light sensation error band comes, and lifting is mobile eventually
Hold the display effect of screen.
The backlight adjusting method and device of mobile terminal provided in an embodiment of the present invention can apply to be integrated with camera
Terminal device in, including smart mobile phone, flat board, palm PC (Personal Digital Assistant, PDA), photograph
Machine, etc..
Fig. 1 shows the implementation process of the backlight adjusting method of mobile terminal provided in an embodiment of the present invention, and details are as follows：
In S101, the corresponding screen back light value of different acquisition parameters is pre-set.
Mobile terminal camera can operationally produce acquisition parameters, the including but not limited to acquisition parameters, camera
The overall gray value of captured picture frame, and automatic exposure (Automatic Exposure, AE) value that camera is exported,
In the present embodiment, corresponding screen back light value is set for different acquisition parameters scopes in advance.By taking table 1 as an example：
Table 1
| It is interval | Overall gray value | Light sensation reading | Screen back light value |
| 1 | 0~4 | 0~3lux | 8 |
| 2 | 5~100 | 4~260lux | 50 |
| …… | …… | …… | …… |
| N | 255 | It is infinitely great | Maximum |
As shown in table 1, set N number of screen backlight regulation interval, one screen back light value of each interval correspondence, to shoot ginseng
Exemplified by number is the overall gray value of picture frame, overall gray value is also divided to N number of interval from low to high, it is each interval respectively with one
Individual screen back light value is corresponding.
In S102, when mobile terminal triggering backlight regulation, the camera of the mobile terminal is opened.
In the present embodiment, the mobile terminal triggering backlight regulation, refers to the ambient light sensing built in mobile terminal
The luminous intensity that device detects mobile terminal local environment changes, and the intensity of variation has arrived and needs to adjust backlight value
In the case of, before the backlight value of mobile terminal is adjusted output signal, suspends backlight regulation operation first, open and move
The camera of dynamic terminal.
The camera of mobile terminal is opened, including by " taking pictures " application of mobile terminal by closed mode or running background
State activation is to system front stage operation.
The camera, can be the front camera or rear camera of mobile terminal.Preferably, it can select out
The screen opened with mobile terminal is in conplane front camera, to ensure the ambient light relevant parameter produced by camera
It is consistent with the ambient light residing for screen.
In S103, the acquisition parameters of the camera are obtained.
According to the difference of acquisition parameters, the acquisition modes of acquisition parameters are also different：
As one embodiment of the present of invention, the acquisition parameters include the image that overall gray value, i.e. camera are shot
The overall gray value of frame, then as shown in Fig. 2 S103 is specially：
S201, a picture frame is shot by the camera.
S202, calculates the overall gray value of described image frame.
The form of the picture frame shot according to mobile terminal is different, and the calculation of overall gray value also has difference.
As one embodiment of the present of invention, if described image frame is rgb format, as shown in figure 3, S202 is specially：
S301, calculates the average gray value of each pixel of described image frame.
S302, by the average gray value of described image frame all pixels point be added again divided by described image frame pixel
Point sum, obtains the overall gray value of described image frame.
In the present embodiment, first by formula (0.299*R+0.587*G+0.114*B), each picture in picture frame is calculated
The average gray value of vegetarian refreshments, then the average gray value for calculating obtained each pixel is mutually added up, divided by the picture frame
Pixel sum, has just obtained the overall gray value of the picture frame.
As another embodiment of the present invention, if described image frame is yuv format, S202 is specially：
The luminance signal part (i.e. Y-signal part) of each pixel of described image frame is added, then divided by described image
The pixel sum of frame, obtains the overall gray value of described image frame.
As another embodiment of the present invention, if the acquisition parameters include automatic exposure value, S103 is specially：
Obtain the automatic exposure value of the camera output.
The present embodiment is applied to support directly to export the camera of AE values, and the camera during operation can be automatically to current
Ambient light is detected, and exports AE values in real time.
In S104, the backlight illumination of the mobile terminal is adjusted into screen back light value corresponding to the acquisition parameters.
The acquisition parameters calculated according to S103, find acquisition parameters institute right in the corresponding relation that S101 is pre-set
The screen back light value answered, and the backlight illumination of mobile terminal is adjusted to the screen back light value.
Specific regulation process can be as shown in Figure 4：
In S401, the corresponding screen back light value of the acquisition parameters is judged and according to the environment built in the mobile terminal
Whether the screen back light value acquired in optical sensor is consistent.
One screen back light value also can correspondingly be corresponded to by the ambient light intensity measured by ambient light sensor, in this reality
Apply in example, by judging whether the two is consistent, may further ensure that the accuracy of backlight regulation.
In S402, if the corresponding screen back light value of the acquisition parameters with according to the ambient light built in the mobile terminal
Screen back light value acquired in sensor is consistent, then adjusts the backlight illumination of the mobile terminal to acquisition parameters correspondence
Screen back light value.
In S403, if the corresponding screen back light value of the acquisition parameters with according to the ambient light built in the mobile terminal
Screen back light value acquired in sensor is inconsistent, then adjusts the backlight illumination of the mobile terminal to the acquisition parameters pair
The screen back light value answered, and will restart after automatic backlight regulatory function closing preset time period.
In the present embodiment, automatic backlight regulatory function was closed after a period of time and be then turned on, can avoided because shooting ginseng
The corresponding screen back light values of number with it is inconsistent according to the screen back light value acquired in the ambient light sensor built in mobile terminal and
Caused backlight shake.
In embodiments of the present invention, mobile terminal is calculated by the use of the camera of mobile terminal as auxiliary lighting apparatus is needed
The screen back light value to be adjusted, by increasing capacitance it is possible to increase the accuracy of backlight regulation, reduces the interference that light sensation error band comes, and lifting is mobile eventually
Hold the display effect of screen.
Corresponding to the backlight adjusting method of the mobile terminal described in foregoing embodiments, Fig. 5 shows that the embodiment of the present invention is carried
The structured flowchart of the backlight adjusting means of the mobile terminal of confession, for convenience of description, illustrate only portion related to the present embodiment
Point.
Reference picture 5, the device includes：
Setting unit 51, pre-sets the corresponding screen back light value of different acquisition parameters；
Opening unit 52, when mobile terminal triggering backlight regulation, opens the camera of the mobile terminal；
Acquiring unit 53, obtains the acquisition parameters of the camera；
Adjustment unit 54, screen backlight corresponding to the acquisition parameters is adjusted by the backlight illumination of the mobile terminal
Value.
Alternatively, the acquisition parameters include overall gray value, and the acquiring unit 53 includes：
Subelement is shot, a picture frame is shot by the camera；
Computation subunit, calculates the overall gray value of described image frame.
Alternatively, described image frame be rgb format, the computation subunit specifically for：
Calculate the average gray value of each pixel of described image frame；
By the average gray value of described image frame all pixels point be added again divided by described image frame pixel it is total
Number, obtains the overall gray value of described image frame.
Alternatively, described image frame be yuv format, the computation subunit specifically for：
The luminance signal part of each pixel of described image frame is added, then divided by described image frame pixel it is total
Number, obtains the overall gray value of described image frame.
Alternatively, the acquisition parameters include automatic exposure value, the acquiring unit 53 specifically for：
Obtain the automatic exposure value of the camera output.
In embodiments of the present invention, mobile terminal is calculated by the use of the camera of mobile terminal as auxiliary lighting apparatus is needed
The screen back light value to be adjusted, by increasing capacitance it is possible to increase the accuracy of backlight regulation, reduces the interference that light sensation error band comes, and lifting is mobile eventually
Hold the display effect of screen.
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
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of backlight adjusting method of mobile terminal, it is characterised in that including：
Pre-set the corresponding screen back light value of different acquisition parameters；
When mobile terminal triggering backlight regulation, the camera of the mobile terminal is opened；
Obtain the acquisition parameters of the camera；
The backlight illumination of the mobile terminal is adjusted into screen back light value corresponding to the acquisition parameters,
The mobile terminal triggering backlight regulation, refers to that the ambient light sensor built in mobile terminal detects mobile terminal institute
The luminous intensity of place's environment is changed, and the intensity of variation has been arrived in the case of needing regulation backlight value, in output signal
Before the backlight value of mobile terminal is adjusted, suspends backlight regulation operation first, open the camera of mobile terminal.
2. the method as described in claim 1, it is characterised in that the acquisition parameters include overall gray value, the acquisition institute
Stating the acquisition parameters of camera includes：
One picture frame is shot by the camera；
Calculate the overall gray value of described image frame.
3. method as claimed in claim 2, it is characterised in that described image frame is rgb format, the calculating described image frame
Overall gray value include：
Calculate the average gray value of each pixel of described image frame；
By the average gray value of described image frame all pixels point be added again divided by described image frame pixel sum, obtain
To the overall gray value of described image frame.
4. method as claimed in claim 2, it is characterised in that described image frame is yuv format, the calculating described image frame
Overall gray value include：
The luminance signal part of each pixel of described image frame is added, then divided by described image frame pixel sum, obtain
To the overall gray value of described image frame.
5. the method as described in claim 1, it is characterised in that the acquisition parameters include automatic exposure value, the acquisition institute
Stating the acquisition parameters of camera includes：
Obtain the automatic exposure value of the camera output.
6. a kind of backlight adjusting means of mobile terminal, it is characterised in that including：
Setting unit, for pre-setting the corresponding screen back light value of different acquisition parameters；
Opening unit, for when mobile terminal triggering backlight regulation, opening the camera of the mobile terminal；
Acquiring unit, the acquisition parameters for obtaining the camera；
Adjustment unit, for the backlight illumination of the mobile terminal to be adjusted into screen back light value corresponding to the acquisition parameters,
The mobile terminal triggering backlight regulation, refers to that the ambient light sensor built in mobile terminal detects mobile terminal institute
The luminous intensity of place's environment is changed, and the intensity of variation has been arrived in the case of needing regulation backlight value, in output signal
Before the backlight value of mobile terminal is adjusted, suspends backlight regulation operation first, open the camera of mobile terminal.
7. device as claimed in claim 6, it is characterised in that the acquisition parameters include overall gray value, the acquisition list
Member includes：
Subelement is shot, for shooting a picture frame by the camera；
Computation subunit, the overall gray value for calculating described image frame.
8. device as claimed in claim 7, it is characterised in that described image frame is rgb format, the computation subunit is specific
For：
Calculate the average gray value of each pixel of described image frame；
By the average gray value of described image frame all pixels point be added again divided by described image frame pixel sum, obtain
To the overall gray value of described image frame.
9. device as claimed in claim 7, it is characterised in that described image frame is yuv format, the computation subunit is specific
For：
The luminance signal part of each pixel of described image frame is added, then divided by described image frame pixel sum, obtain
To the overall gray value of described image frame.
10. device as claimed in claim 6, it is characterised in that the acquisition parameters include automatic exposure value, the acquisition list
Member specifically for：
Obtain the automatic exposure value of the camera output.
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| CN201510097205.0A CN104660766B (en) | 2015-03-04 | 2015-03-04 | The backlight adjusting method and device of a kind of mobile terminal |
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| CN201510097205.0A CN104660766B (en) | 2015-03-04 | 2015-03-04 | The backlight adjusting method and device of a kind of mobile terminal |
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| CN105323382B (en) * | 2015-11-04 | 2019-03-19 | Oppo广东移动通信有限公司 | A kind of screen light compensation method, device and mobile terminal |
| CN105577941A (en) | 2016-02-01 | 2016-05-11 | 惠州Tcl移动通信有限公司 | Terminal screen brightness adjusting method and system |
| CN105872402A (en) | 2016-06-15 | 2016-08-17 | 深圳Tcl新技术有限公司 | Photographing method and system of smart television |
| CN106648066A (en) * | 2016-11-09 | 2017-05-10 | 北京小米移动软件有限公司 | Backlight adjustment method and device and intelligent glasses |
| CN108986768B (en) | 2017-06-02 | 2020-09-22 | 广东夏野日用电器有限公司 | Control method |
| CN108597432B (en) * | 2018-04-19 | 2021-05-07 | Oppo广东移动通信有限公司 | Brightness adjusting method and related product |
| CN108564915B (en) * | 2018-04-25 | 2021-05-14 | Oppo广东移动通信有限公司 | Brightness adjusting method and related product |
| CN110244310A (en) * | 2019-06-27 | 2019-09-17 | Oppo广东移动通信有限公司 | A kind of TOF system and image processing method, storage medium |
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| JP3970709B2 (en) * | 2002-07-16 | 2007-09-05 | 株式会社日立製作所 | Mobile communication terminal, mobile communication system, and data transmission rate display method for mobile communication |
| CN101179789B (en) * | 2007-09-12 | 2013-04-10 | 青岛海信移动通信技术股份有限公司 | Backlight brightness self-adjusting mobile phone and implementing method thereof |
| CN103973867B (en) * | 2013-01-28 | 2016-05-04 | 广州三星通信技术研究有限公司 | Control wireless communication terminal and method thereof backlight |
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Address after: Changan town in Guangdong province Dongguan 523841 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523841 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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