CN103973855B - Mobile phone backlight brightness micro-tensioning system and its method - Google Patents
Mobile phone backlight brightness micro-tensioning system and its method Download PDFInfo
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- CN103973855B CN103973855B CN201310031111.4A CN201310031111A CN103973855B CN 103973855 B CN103973855 B CN 103973855B CN 201310031111 A CN201310031111 A CN 201310031111A CN 103973855 B CN103973855 B CN 103973855B
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Abstract
A kind of mobile phone backlight brightness method for trimming, this method include：When liquid crystal display screen of mobile phone curtain refreshes display content thereon, after to be refreshed, the RGB color information of each pixel of the present displayed content on reading frame buffer zone；After all pixels point is read, the mean flow rate of present displayed content on LCD Panel is calculated according to the RGB color information of reading；The mean flow rate that judges present displayed content and be stored in frame buffer zone mean flow rate whether on same section；When the mean flow rate of present displayed content is not on same section with being stored in the mean flow rate of frame buffer zone, renewal is stored in the mean flow rate of the display content on the LCD Panel in frame buffer zone；The corresponding backlight illumination trim values in section where the mean flow rate of present displayed content is searched according to the corresponding relation of the mean flow rate of display content and backlight illumination trim values；Backlight brightness values are adjusted according to the backlight illumination trim values.
Description
Technical field
The present invention relates to mobile phone brightness adjustment field, more particularly to a kind of mobile phone backlight brightness micro-tensioning system and its method.
Background technology
Present mobile phone, which is substantially all, is configured with light sensor, and strong and weak according to ambient adjusts the bright of mobile phone backlight
Degree, and LCD Panel（Liquid Crystal Display, LCD）On display content and backlight intensity it is also relevant
System, because the display content of LCD Panel constantly refreshes, when the display content of LCD Panel is bright background
（Such as white）In the case of, backlight needs further to turn down, and under dark background, backlight intensity needs to heighten, and current
Mobile phone the brightness of mobile phone backlight can not be finely adjusted according to the bright background of display content after user sets mobile phone brightness,
It has impact on the comfortableness that user uses mobile phone.
The content of the invention
In view of the foregoing, it is necessary to provide a kind of mobile phone backlight brightness micro-tensioning system and method, it can be according to light
Line inductor is just after successive step backlight illumination, then the bright background automatic fine tuning back of the body for passing through the display content on LCD Panel
Brightness.
A kind of mobile phone backlight brightness micro-tensioning system, the system include：Read module, for when liquid crystal display screen of mobile phone curtain brush
Newly during display content thereon, after to be refreshed, the RGB of each pixel of present displayed content on frame buffer zone is read
Colouring information；Computing module, after being read for all pixels point, liquid crystal display is calculated according to the RGB color information of reading
The mean flow rate of present displayed content on screen；Judge module, for judging the mean flow rate of present displayed content with being stored in
Whether the mean flow rate of frame buffer zone is on same section；Update module, mean flow rate and storage for present displayed content
When the mean flow rate of frame buffer zone is not on same section, renewal is stored on the LCD Panel in frame buffer zone
The mean flow rate of display content；Searching modul, it is corresponding with backlight illumination trim values for the mean flow rate according to display content
Backlight illumination trim values corresponding to section where the mean flow rate of relation lookup present displayed content；Module is finely tuned, for root
Backlight brightness values are adjusted according to the backlight illumination trim values.
A kind of mobile phone backlight brightness method for trimming, this method include：Read step, when liquid crystal display screen of mobile phone curtain refreshes it
On display content when, after to be refreshed, read frame buffer zone on present displayed content each pixel RGB color
Information；Calculation procedure, after all pixels point is read, LCD Panel is calculated according to the RGB color information of reading and is taken in
The mean flow rate of preceding display content；Judgment step, judge the mean flow rate of present displayed content and be stored in the flat of frame buffer zone
Whether equal brightness is on same section；Step is updated, the mean flow rate of present displayed content is with being stored in being averaged for frame buffer zone
When brightness is not on same section, renewal is stored in the average bright of the display content on the LCD Panel in frame buffer zone
Degree；Finding step, present displayed content is searched according to the corresponding relation of the mean flow rate of display content and backlight illumination trim values
Mean flow rate where section corresponding to backlight illumination trim values；Trim step, adjusted according to the backlight illumination trim values
Backlight brightness values.
Compared to prior art, the mobile phone backlight brightness micro-tensioning system, it can be in the background mistake of present displayed content
When dark, the system can make backlight brightness values raise certain unit on the luminance reference that user sets automatically；Current display
The background of content is excessively bright, and the system can make backlight brightness values lower certain list on the luminance reference that user sets automatically
Position, improve the comfortableness that user uses mobile phone.
Brief description of the drawings
Fig. 1 is the application environment schematic diagram of mobile phone backlight brightness micro-tensioning system of the present invention.
Fig. 2 is the functional block diagram of mobile phone backlight brightness micro-tensioning system of the present invention.
Fig. 3 is the flow chart of the preferred embodiment of mobile phone backlight brightness method for trimming of the present invention.
Fig. 4 is the zoning figure of LCD Panel.
Fig. 5 is corresponding diagram of the mean flow rate with backlight illumination trim values of display content.
Main element symbol description
| Mobile phone | 1 |
| Mobile phone backlight brightness micro-tensioning system | 10 |
| Frame buffer zone | 11 |
| LCD Panel | 12 |
| Back light | 120 |
| Read module | 100 |
| Computing module | 101 |
| Judge module | 102 |
| Update module | 103 |
| Searching modul | 104 |
| Finely tune module | 105 |
Following embodiment will combine above-mentioned accompanying drawing and further illustrate the present invention.
Embodiment
As shown in figure 1, it is the application environment schematic diagram of mobile phone backlight brightness micro-tensioning system of the present invention.In the present embodiment,
Mobile phone backlight brightness micro-tensioning system 10 is run in mobile phone 1, is believed according to the background luminance of the display content on LCD Panel
The brightness of breath fine setting mobile phone backlight light source 120.The mobile phone 1 also includes frame buffer zone 11 and LCD Panel 12.
The LCD Panel 12 is by liquid crystal display device, connector, peripheral circuit, the backlight light such as control and driving
The component that source, structural member etc. are assembled together.
The frame buffer zone 11 is a part for the display-memory of mobile phone 1, for preserving the aobvious of LCD Panel 12
Show content.In the present embodiment, the frame buffer zone 11 is used to preserve each of present displayed content on LCD Panel 12
The RGB color information of pixel and the average luminance information of display content.The RGB color information of the pixel can be with pixel
Point YUV color informations mutually change, the YUV be by eurovision system used by a kind of colour coding method, it is therein
U, V represents the chrominance information of pixel, and Y represents the monochrome information of pixel, is that RGB specific part is superimposed into what is obtained, bright
Spend Y=0.299 × R+0.587 × G+0.114 × B.
As shown in Fig. 2 it is the functional block diagram of mobile phone backlight brightness micro-tensioning system of the present invention.The mobile phone backlight brightness is micro-
Adjusting system 10 be divided into read module 100, computing module 101, judge module 102, update module 103, searching modul 104 and
Finely tune module 105.Module alleged by the present invention is to complete the program segment of a specific function, is existed than program more suitable for description software
Implementation procedure in processor, the function on each module will specifically describe in the flowchart of fig. 3.
As shown in figure 3, it is the flow chart of the preferred embodiment of mobile phone backlight brightness method for trimming of the present invention.According to different
Demand, the order of step can change in the flow chart, and some steps can be omitted.
Step S10, the request of LCD Panel 12 of mobile phone 1 refresh display content thereon.
Step S11, after refreshing, read module 100 reads each picture of the present displayed content on frame buffer zone 11
The RGB color information of vegetarian refreshments.
Step S12, after all pixels point is read, computing module 101 calculates liquid crystal according to the RGB color information of reading
The mean flow rate of present displayed content on display screen 12.
In the present embodiment, as shown in figure 4, being LCD Panel zoning figure.The display of LCD Panel 12
Content is divided into three regions：First area, second area and the 3rd region.The first area is from LCD Panel
12 left side edge starts to take the first predetermined width to the right（Such as 20 pixels）Region.3rd region is from liquid crystal display
The right side edge of screen 12 starts to take the second predetermined width to the left（Such as 30 pixels）Region.The mean flow rate is the firstth area
The brightness sum of all pixels point of the brightness of all pixels point of the display content in domain and the display content in the 3rd region and the
The ratio of all pixels point number summation in one region and the 3rd region.
Step S13, judge module 102 judge the mean flow rate of present displayed content with being stored in being averaged for frame buffer zone 11
Whether brightness is on same section.When in same section, without fine setting, this time flow terminates；When being not at same section
When, perform step S14.
The mean flow rate for being stored in frame buffer zone 11 is that putting down for frame buffer zone is stored in before present displayed content refreshes
Equal brightness.The section refers to the section of the multiple mean flow rates divided according to the different average brightness values of display content.At this
In embodiment, as shown in figure 5, being corresponding diagram of the mean flow rate with backlight illumination trim values of display content.To divide 6 sections
Exemplified by, first interval be mean flow rate between 0 and 10, the like, the 6th section be mean flow rate between 190 and 235.
Step S14, the renewal of update module 103 are stored in the display content on the LCD Panel in frame buffer zone 11
Mean flow rate.I.e. erasing is stored in the mean flow rate of frame buffer zone 11, and the mean flow rate of present displayed content is saved in into frame and delayed
Rush in area 11.
Step S15, searching modul 104 are looked into according to the corresponding relation of the mean flow rate and backlight illumination trim values of display content
Backlight illumination trim values corresponding to the section looked for where the mean flow rate of present displayed content.
As shown in figure 5, each corresponding backlight illumination trim values in section.Described corresponding relation is according to many experiments
Obtained empirical value.If the mean flow rate of present displayed content is between 0 and 10, show the background mistake of present displayed content
Secretly, then backlight brightness values raise 10 units on the luminance reference that user sets, the like, if present displayed content is flat
When equal brightness is between 190 and 235, show that the background of present displayed content is excessively bright, then backlight brightness values are set bright in user
Spend and 15 units are lowered on benchmark.
Step S16, fine setting module 105 adjust backlight brightness values according to the backlight illumination trim values.
By the present invention, it can be after backlight successive step brightness according at the beginning of light sensor, according to LCD Panel
The background luminance of display content finely tune the brightness of backlight.When the background of present displayed content is excessively dark, the system can be automatic
Backlight brightness values are made to raise certain unit on the luminance reference that user sets；The background of present displayed content is excessively bright, and this is
System can make backlight brightness values lower certain unit on the luminance reference that user sets automatically.Improve user and use mobile phone
Comfortableness.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although reference
The present invention is described in detail for preferred embodiment, it will be understood by those within the art that, can be to the present invention's
Technical scheme is modified or equivalent substitution, without departing from the spirit and scope of technical solution of the present invention.
Claims (8)
1. a kind of mobile phone backlight brightness micro-tensioning system, it is characterised in that the system includes：
Read module, for when liquid crystal display screen of mobile phone curtain refreshes display content thereon, reading current on frame buffer zone
The RGB color information of each pixel of display content；
Computing module, after being read for all pixels point, calculated according to the RGB color information of reading on LCD Panel
The mean flow rate of present displayed content；
Judge module, for the mean flow rate that judges present displayed content be stored in frame buffer zone mean flow rate whether same
On one section；
Update module, for present displayed content mean flow rate be stored in the mean flow rate of frame buffer zone be not at it is same
When on section, renewal is stored in the mean flow rate of the display content on the LCD Panel in frame buffer zone；
Searching modul, current display is searched for the corresponding relation of the mean flow rate according to display content and backlight illumination trim values
Backlight illumination trim values corresponding to section where the mean flow rate of content；
Module is finely tuned, for adjusting backlight brightness values according to the backlight illumination trim values；
Wherein, the LCD Panel is divided into first area, second area and the 3rd region, the first area be from
The left side edge of LCD Panel starts to take the region of the first predetermined width to the right, and the 3rd region is from LCDs
The right side edge of curtain starts to take the region of the second predetermined width to the left, and the second area is located at the first area and described the
Between three regions, the mean flow rate is the brightness of all pixels point and the display in the 3rd region of the display content of first area
The brightness sum of all pixels point of content and first area and the ratio of all pixels point number summation in the 3rd region.
2. mobile phone backlight brightness micro-tensioning system as claimed in claim 1, it is characterised in that the brightness of the pixel is basis
What the RGB color information of pixel was converted to.
3. mobile phone backlight brightness micro-tensioning system as claimed in claim 1, it is characterised in that the background luminance of present displayed content
When crossing dark, backlight brightness values automatic default unit of up-regulation first on luminance reference；The background luminance of present displayed content is excessively bright
When, backlight brightness values are automatic on luminance reference to lower the second default unit.
4. mobile phone backlight brightness micro-tensioning system as claimed in claim 1, it is characterised in that average bright when present displayed content
When spending and be stored in the mean flow rate of frame buffer zone and being on same section, backlight illumination does not have to fine setting.
5. a kind of mobile phone backlight brightness method for trimming, it is characterised in that this method includes：
Read step, when liquid crystal display screen of mobile phone curtain refreshes display content thereon, after to be refreshed, read frame buffer zone
On present displayed content each pixel RGB color information, the LCD Panel is divided into first area,
Two regions and the 3rd region, the first area are to take the first predetermined width to the right since the left side edge of LCD Panel
Region, the 3rd region is the region for taking the second predetermined width to the left since the right side edge of LCD Panel, institute
Second area is stated between the first area and the 3rd region；
Calculation procedure, after all pixels point is read, calculated according to the RGB color information of reading current on LCD Panel
The mean flow rate of display content, the mean flow rate are brightness and the 3rd area of all pixels point of the display content of first area
The brightness sum of all pixels point of the display content in domain and all pixels point number summation in first area and the 3rd region
Ratio；
Judgment step, the mean flow rate for judging present displayed content and be stored in frame buffer zone mean flow rate whether in same area
Between on；
Step is updated, same section is not at being stored in the mean flow rate of frame buffer zone in the mean flow rate of present displayed content
When upper, renewal is stored in the mean flow rate of the display content on the LCD Panel in frame buffer zone；
Finding step, present displayed content is searched according to the corresponding relation of the mean flow rate of display content and backlight illumination trim values
Mean flow rate where section corresponding to backlight illumination trim values；
Trim step, backlight brightness values are adjusted according to the backlight illumination trim values.
6. mobile phone backlight brightness method for trimming as claimed in claim 5, it is characterised in that the brightness of the pixel is basis
What the RGB color information of pixel was converted to.
7. mobile phone backlight brightness method for trimming as claimed in claim 5, it is characterised in that this method also includes step：
When the background luminance of present displayed content is excessively dark, up-regulation backlight brightness values first preset unit on luminance reference；
The background luminance of present displayed content is excessively bright, and backlight brightness values second are lowered on luminance reference and preset unit.
8. mobile phone backlight brightness method for trimming as claimed in claim 5, it is characterised in that average bright when present displayed content
When spending and be stored in the mean flow rate of frame buffer zone and being on same section, backlight illumination does not have to fine setting.
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| CN201310031111.4A CN103973855B (en) | 2013-01-28 | 2013-01-28 | Mobile phone backlight brightness micro-tensioning system and its method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898311A (en) * | 2017-03-28 | 2017-06-27 | 广州三星通信技术研究有限公司 | For the screen luminance adjustment method and equipment of electric terminal |
| CN109272970A (en) * | 2018-10-30 | 2019-01-25 | 维沃移动通信有限公司 | A kind of screen luminance adjustment method and mobile terminal |
| CN111462701A (en) * | 2019-01-18 | 2020-07-28 | 北京小米移动软件有限公司 | Backlight brightness adjusting method and device |
| CN114666439B (en) * | 2022-03-18 | 2024-04-30 | 北京小米移动软件有限公司 | Method, device and medium for adjusting dark color mode display state |
| CN114512104A (en) * | 2022-04-20 | 2022-05-17 | 宏齐光电子(深圳)有限公司 | Control method and device for energy-saving LED mobile phone backlight source |
| CN114927109B (en) * | 2022-06-24 | 2023-11-21 | 深圳万橙物联科技有限公司 | Backlight source control method and device, display equipment and storage medium |
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| US8035653B2 (en) * | 2006-10-27 | 2011-10-11 | Hewlett-Packard Development Company, L.P. | Dynamically adjustable elements of an on-screen display |
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