CN100508001C - Control device for automatically regulating backlight brightness and method thereof - Google Patents
Control device for automatically regulating backlight brightness and method thereof Download PDFInfo
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- CN100508001C CN100508001C CNB2006100352256A CN200610035225A CN100508001C CN 100508001 C CN100508001 C CN 100508001C CN B2006100352256 A CNB2006100352256 A CN B2006100352256A CN 200610035225 A CN200610035225 A CN 200610035225A CN 100508001 C CN100508001 C CN 100508001C
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Abstract
This invention discloses one control device and method for automatic back light degree, which comprises light sense module, temperature sense module and computation module and adjust module, wherein the light sense module and temperature sense module is to sense current environment brightness and temperature and to output resistance value and current value to computation module for back light adjust value; adjust module adjusts the back light brightness accordingly; This invention can adjust display back light brightness with environment brightness free from display to get display signals.
Description
Ji Intraoperative field
The present invention is relevant for a kind of control device and method thereof of automatic adjustment backlight illumination, particularly a kind of control device and the method thereof that can adjust the backlight illumination of display along with the variation of present ambient brightness and present environment temperature.
Bei Jing Ji Intraoperative
Along with the prosperity day by day of multimedia industry, mobile phone (mobile phone), digital camera (digitalcamera), PDA(Personal Digital Assistant), notebook computer (notebook), computed table digitalized electron products such as (desktop) are invariably towards facility, greater functionality, direction more attractive in appearance develop more.Wherein, display can be described as of paramount importance output device in the said goods, and the various information in the product can be presented on the user at the moment by it.Former, (Cathode Ray Tube CRT) is called teletron again to cathode-ray tube (CRT), is the most important element of being responsible for demonstration in the display.Because of it has the good display quality superiority economic with it, dominating the market of display exclusively always.Yet if take in the opinion of the saving energy of environmental protection and the availability in space, cathode-ray tube (CRT) can't respond in the face of the consumer demand of light, thin, short, little and low consumpting power or the like, also can't meet epoch trend.
Therefore, in recent years, the indicator screen of emerging electronic product is its main flow with LCD.LCD has that high image quality, space utilization efficient are good, low consumpting power, advantageous characteristic such as radiationless.Lcd technology is employed a kind of Display Modes in the number image technology, and the principle of its design is exactly to utilize two materials with polarity in simple terms, injects the liquid crystal material among this.When electric current utilizes these two polar materials to pass liquid, can make on the correspondence position crystal binding and shield lights shows needed picture thus.In other words, whether the crystal in the LCD is like the shutter that is camera, with deciding light can pass through.Because liquid lens element itself there is no the characteristics of luminescence, so backlight module (Back Light Module) need be provided below LCD usually.By the area source that the backlight module provides panel of LCD to contract need, make panel of LCD obtain enough brightness and contrast, reach the display effect of high image quality.Backlight module roughly is divided into two kinds of edge light type and full run-down types, wherein, the backlight module of edge light type need be passed through a light guide plate (Light Guide Plate), be used for to show light source and be converted to the required area source of display liquid crystal panel, the backlight module of full run-down type then need not to dispose light guide plate, just can directly provide liquid crystal panel required area source.
At present, must be popular to product and the demand psychology of tool fashion speciality in order to satisfy the user, so the electronic product of picture output function all uses colour liquid crystal display device (Liquid Crystal Display, LCD) as picture output device, output interface as message demonstration between user and electronic product, so LCD must clearly be shown message, for the reference of user as the subsequent operation action.But the user tends to the ambient brightness difference because of the place, and does not see the message that liquid crystal display picture gives, and can't carry out follow-up operational motion.Therefore, how to provide a kind of and be not subject to ambient brightness all and can clearly learn the message that liquid crystal display picture awards, become one of research staff's problem to be solved.
Summary of the invention
In view of above problem, fundamental purpose of the present invention is to provide a kind of control device of automatic adjustment backlight illumination, solves the existing problem of prior art thus.
For reaching above-mentioned purpose, the control device of adjusting backlight illumination automatically that the present invention disclosed includes optical sensing module, temperature sensing module, computing module and adjusting module.The ambient brightness that the optical sensing module sensing is present is to export corresponding resistance value; Temperature sensing module contains look-up table, in order to the temperature of sensor light sensing module, and according to the look-up table output current value; Computing module is according to resistance value and current value calculates at least one adjusted value backlight and adjusting module is adjusted backlight illumination according to each adjusted value backlight.
For reaching above-mentioned purpose, the another kind that the present invention disclosed is adjusted the control method of backlight illumination automatically, is applied to optical sensing module, includes the following step: store look-up table; The ambient brightness that sensing is present is with output resistance; The temperature of sensor light sensing module; Obtain current value according to look-up table corresponding to the temperature of optical sensing module; Calculate at least one adjusted value backlight and adjust backlight illumination according to resistance value and current value according to each adjusted value backlight.
The present invention's fundamental purpose can be along with the temperature of the element of ambient brightness and sensitive context brightness and is regulated the backlight illumination of display automatically, so that display is not subject to ambient brightness, and the message that is presented to allow the user clearly learn display.
Description of drawings
Fig. 1 is the present invention's the calcspar of adjusting the control device of display backlight brightness automatically; And
Fig. 2 is the present invention's the control method process flow diagram of adjusting display backlight brightness automatically.
Embodiment
For making purpose of the present invention, structure, feature and function thereof there are further understanding, cooperate embodiment to be described in detail as follows now.More than about the explanation of the explanation of content of the present invention and following embodiment in order to demonstration and the principle of explaining the present invention, and provide claims explanation further of the present invention.
See also Fig. 1, it includes optical sensing module 10, temperature sensing module 20, computing module 30, adjusting module 40 and display module 50 for the present invention's the calcspar of adjusting the control device of display backlight brightness automatically.Connection of its square and running will be in paragraph detailed descriptions down.
50 of display modules show the backlight illumination of adjusting the back.Wherein display module 50 includes colour system array location 51, in order to provide display required colour system different backlight, and the light emitting diode of several different colour systems or several have the electronic component of light-emitting component for example.
See also Fig. 2, it is the present invention's the control method process flow diagram of adjusting display backlight brightness automatically, be applied to optical sensing module 10, include the following step: at first, store look-up table 21 (step 100), in order to the current value of the temperature that stores corresponding optical sensing module 10, thereby allow temperature sensing module 20 obtain corresponding current value according to look-up table 21.Follow the present ambient brightness of sensing, with output resistance (step 110), that is come present ambient brightness of sensing or external light source intensity by photoresistance or other electronic component with sensitization function, so that resistance value changes according to the difference of ambient brightness.
Then, the temperature (step 120) of sensor light sensing module 10, that is by temperature sense IC or other has the electronic component of temperature sensor function,, obtain current value (step 130) according to look-up table 21 again corresponding to temperature to learn the temperature of optical sensing module 10.Use resistance value and current value to calculate at least one adjusted value backlight (step 140), that is be to obtain at least one magnitude of voltage after as calculated according to the size of resistance value and current value.
Then, adjust backlight illumination (step 150) according to each adjusted value backlight, that is be that adjusted value backlight includes several different colour system adjusted values, red colour system adjusted value for example, green is that adjusted value and blueness are adjusted value, thereby adjusts the backlight illumination of backlight module according to the magnitude of voltage of different colour systems.
At last, display backlight brightness (step 160), that is be to present different colour systems backlight and brightness via light emitting diode or several electronic components with light-emitting component that different colour system adjusted values awards several different colour systems.
The present invention adjusts in the display of the control device of backlight illumination and arbitrary device that method is applied to mobile phone, digital camera, personal digital assistant, notebook computer, computed table etc. thereof automatically.
The present invention's principal feature is to be provided with the temperature that light-source brightness situation that optical sensing module 10 reacted and temperature sensing module 20 are reacted, automatically adjust the output backlight on the display, thereby allow the user can clearly learn the message that display module 50 is presented.
Claims (13)
1. a control device of adjusting backlight illumination automatically is characterized in that, includes:
One optical sensing module is in order to one of the present ambient brightness of sensing, to export a resistance value;
One temperature sensing module contains a look-up table, in order to one of this optical sensing module of sensing temperature, and exports a current value according to this look-up table;
One computing module calculates at least one adjusted value backlight according to this resistance value and this current value; And
One adjusting module is adjusted a backlight illumination according to this adjusted value backlight respectively.
2. the control device of automatically adjusting backlight illumination according to claim 1, it is characterized in that: described control device more includes one in order to show the display module of this backlight illumination.
3. as the control device of adjusting backlight illumination automatically as described in the claim 2, it is characterized in that: described display module includes one in order to the colour system array location of the required different colour systems backlight of this display module to be provided.
4. as the control device of adjusting backlight illumination automatically as described in the claim 3, it is characterized in that: described colour system array location includes several light emitting diodes.
5. the control device of automatically adjusting backlight illumination according to claim 1, it is characterized in that: described look-up table stores contrasts this current value of this temperature.
6. the control device of automatically adjusting backlight illumination according to claim 1, it is characterized in that: described this adjusted value backlight includes a red colour system adjusted value, and a green is that an adjusted value and a blueness are adjusted value.
7. the control device of automatically adjusting backlight illumination according to claim 1, it is characterized in that: described optical sensing module is a photoresistance.
8. a control method of adjusting backlight illumination automatically is applied to control device as claimed in claim 1, it is characterized in that, includes the following step:
Store a look-up table;
One of sensing is present ambient brightness is to export a resistance value;
One of this optical sensing module of sensing temperature;
Obtain corresponding to one of this temperature current value according to this look-up table;
Calculate at least one adjusted value backlight according to this resistance value and this current value; And
Adjust a backlight illumination according to this adjusted value backlight respectively.
9. as the control method of adjusting backlight illumination automatically as described in the claim 8, it is characterized in that: described adjusted value backlight includes a red colour system adjusted value, and a green is that an adjusted value and a blueness are adjusted value.
10. as the control method of adjusting backlight illumination automatically as described in the claim 8, it is characterized in that: described look-up table stores contrasts this current value of this temperature.
11. as the control method of adjusting backlight illumination automatically as described in the claim 8, it is characterized in that: the control method of described automatic adjustment backlight illumination more includes the step that shows this backlight illumination.
12. as the control method of adjusting backlight illumination automatically as described in the claim 11, it is characterized in that: the step of this backlight illumination of described demonstration is to present different backlight illuminations by several light emitting diodes.
13. the control method of adjusting backlight illumination automatically as described in the claim 8 is characterized in that: one of described sensing is present ambient brightness, realize by a photoresistance with the step of exporting a resistance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100352256A CN100508001C (en) | 2006-04-28 | 2006-04-28 | Control device for automatically regulating backlight brightness and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100352256A CN100508001C (en) | 2006-04-28 | 2006-04-28 | Control device for automatically regulating backlight brightness and method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN101064092A CN101064092A (en) | 2007-10-31 |
| CN100508001C true CN100508001C (en) | 2009-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100352256A Expired - Fee Related CN100508001C (en) | 2006-04-28 | 2006-04-28 | Control device for automatically regulating backlight brightness and method thereof |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8405585B2 (en) * | 2008-01-04 | 2013-03-26 | Chimei Innolux Corporation | OLED display, information device, and method for displaying an image in OLED display |
| CN101833928B (en) * | 2010-04-24 | 2012-11-21 | 华映光电股份有限公司 | Method for adjusting luminosity of display and related backlight module |
| US9372343B2 (en) * | 2012-01-12 | 2016-06-21 | Htc Corporation | Head-up display, vehicle and controlling method of head-up display |
| CN108877692B (en) * | 2013-11-20 | 2021-05-11 | 华为终端有限公司 | Method and device for adjusting backlight brightness and electronic equipment |
| CN104299560B (en) * | 2014-10-24 | 2017-05-03 | 苏州佳世达电通有限公司 | Display device allowing blue light ratio to be dynamically adjusted and method thereof |
| CN106297729A (en) * | 2015-05-22 | 2017-01-04 | 联想(北京)有限公司 | The method and apparatus of regulation electronic equipment screen display brightness |
| CN105788539B (en) * | 2016-05-20 | 2018-07-10 | 京东方科技集团股份有限公司 | Backlight adjusting method and system, backlight module and display device |
| CN107610676A (en) * | 2017-09-27 | 2018-01-19 | 上海展扬通信技术有限公司 | The screen brightness control method and screen intensity control system of a kind of intelligent terminal |
| CN108022559B (en) | 2018-01-03 | 2020-01-21 | 上海中航光电子有限公司 | Photosensitive detection module, light source module and electrophoretic display device |
| CN109961734A (en) * | 2019-02-28 | 2019-07-02 | 维沃移动通信有限公司 | A kind of method of adjustment of screen parameter, device and terminal device |
| CN112908272A (en) * | 2021-01-22 | 2021-06-04 | 中汽创智科技有限公司 | Display screen brightness adjusting method and device and display screen |
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2006
- 2006-04-28 CN CNB2006100352256A patent/CN100508001C/en not_active Expired - Fee Related
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