CN101236739A - Method and apparatus for display terminal automatically regulating brightness - Google Patents
Method and apparatus for display terminal automatically regulating brightness Download PDFInfo
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- CN101236739A CN101236739A CNA2007100638671A CN200710063867A CN101236739A CN 101236739 A CN101236739 A CN 101236739A CN A2007100638671 A CNA2007100638671 A CN A2007100638671A CN 200710063867 A CN200710063867 A CN 200710063867A CN 101236739 A CN101236739 A CN 101236739A
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Abstract
The present invention discloses a device and a method for automatic brightness adjustment of display terminal, comprising an ambient brightness collecting unit and a control unit; the ambient brightness collecting unit comprises a photosensitive element; the control unit comprises a CPU, a photosensitive control circuit and a brightness adjusting circuit; the signal of the ambient brightness collected by the photosensitive element is transmitted to the photosensitive control circuit; the photosensitive control circuit converts the received analog signal into a digital signal which is transmitted to the CPU; the CPU controls the brightness adjusting circuit according to the received signal so as to adjust the control voltage of a power supply circuit to realize that the brightness of the display terminal is automatically adjusted, thereby the invention enables the brightness of the display terminal to be matched with the ambient brightness, having better visual effect and reduces the power consumption of the display terminal The device and the method for display terminal automatic brightness adjustment are mainly suitable for the liquid crystal display, and also suitable for other display terminals.
Description
Technical field
The present invention relates to a kind of control technology of display terminal, relate in particular to a kind of device and method of display terminal automatically regulating brightness.
Background technology
Development along with display technique, increasing liquid crystal display terminal begins to replace traditional CRT (cathode-ray tube (CRT)) display, be applied in the middle of the various industries, when a lot of sector application, requirement can clear display under very strong ambient brightness, that just requires the brightness of liquid crystal display terminal very high, if but LCDs always remains on the luminance standard when using under the high light, when ambient brightness intensity weakens, human eye is watched being upset to cause because liquid crystal display terminal mistake backlight is bright and is felt very uncomfortable, watch for a long time, also can cause visual fatigue and visual impairment.
Summary of the invention
The device and method that the purpose of this invention is to provide a kind of display terminal automatically regulating brightness, this device and method can be according to the brightness of the brightness regulation display terminal of environment.
The objective of the invention is to be achieved through the following technical solutions:
The device of display terminal automatically regulating brightness of the present invention, be used for regulating the brightness of display terminal according to ambient brightness, comprise ambient brightness collecting unit, control module, described ambient brightness collecting unit is electrically connected with control module, and described control module is electrically connected with display terminal.
Described ambient brightness collecting unit comprises light activated element, and described control module is provided with photosensitive control interface, and described light activated element is plugged on the photosensitive control interface.
Described control module comprises CPU, photosensitive control circuit, brightness regulating circuit, the signal of the ambient brightness of described light activated element collection is passed to photosensitive control circuit, photosensitive control circuit is passed to CPU after the signal that receives is handled, CPU regulates the brightness of display terminal according to the signal controlling brightness regulating circuit that receives.
Described display terminal is connected with feed circuit, and described brightness regulating circuit is electrically connected with feed circuit.
The method of display terminal automatically regulating brightness of the present invention, it can regulate the brightness of display terminal according to ambient brightness, may further comprise the steps:
A, ambient brightness collecting unit are gathered the ambient brightness signal, and signal is passed to control module;
The brightness of the signal controlling display terminal that B, described control module basis receive.
Described steps A comprises step:
A1, light activated element gather the simulating signal of ambient brightness, and simulating signal is passed to photosensitive control circuit;
A2, photosensitive control circuit become digital signal with analog signal conversion, and send digital signal to CPU.
Among the described step B, control module is set a plurality of brightness class, and each brightness class is the different brightness of corresponding display terminal respectively.
Among the described step B, CPU judges the brightness class that display terminal is suitable for according to the ambient brightness signal that receives, and regulates the supply voltage of the feed circuit of display terminal by brightness regulating circuit.
Described brightness class has fourth gear.
It regulates the brightness of display terminal automatically according to ambient brightness, and described display terminal is a LCDs.
As seen from the above technical solution provided by the invention, the device and method of display terminal automatically regulating brightness of the present invention, owing to comprise ambient brightness collecting unit, control module, the ambient brightness collecting unit is gathered the ambient brightness signal, and signal passed to control module, control module is according to the brightness of the signal controlling display terminal that receives.The brightness and the ambient brightness of display terminal are complementary, and visual effect is better, and can reduce the power consumption of display terminal.Mainly be applicable to LCDs, also be applicable to other display terminal.
Description of drawings
Fig. 1 is the structure principle chart of the device of display terminal automatically regulating brightness of the present invention;
Fig. 2 is the schematic diagram of the photosensitive control circuit of the device of display terminal automatically regulating brightness of the present invention.
Embodiment
The device of display terminal automatically regulating brightness of the present invention, be used for regulating the brightness of display terminal according to ambient brightness, its preferable embodiment as shown in Figure 1, comprise ambient brightness collecting unit, control module, described ambient brightness collecting unit is electrically connected with control module, and described control module is electrically connected with display terminal.The display terminal here mainly refers to LCDs, also can be other display terminal.
Above-mentioned ambient brightness collecting unit comprises light activated element, and control module can be provided with photosensitive control interface, and light activated element is plugged on the photosensitive control interface.Light activated element can be installed on the liquid crystal display terminal, and the sensing part of light activated element is installed on the shell of terminal, and light activated element is gathered the ambient brightness signal, is transferred to control module.
Described control module comprises CPU, photosensitive control circuit, brightness regulating circuit, the signal of the ambient brightness of described light activated element collection is passed to photosensitive control circuit, photosensitive control circuit is passed to CPU after the signal that receives is handled, and CPU is according to the signal controlling brightness regulating circuit that receives.
As shown in Figure 2, be the schematic diagram of photosensitive control circuit.The pin A12 of CPU is directly connected to photosensitive control circuit.The data that the photosensitive control circuit collection comes send CPU to by pin A12.
Described display terminal is connected with feed circuit, and described brightness regulating circuit is electrically connected with feed circuit.Adjusting to display terminal brightness mainly is to realize by the control voltage of regulating feed circuit.
The method of display terminal automatically regulating brightness of the present invention can be regulated the brightness of display terminal according to ambient brightness, may further comprise the steps:
The brightness of the signal controlling display terminal that step 2, control module basis receive.
Above-mentioned step 1 specifically comprises step:
In the above-mentioned step 2, control module can be set a plurality of brightness class, each brightness class is the different brightness of corresponding display terminal respectively, CPU judges the brightness class that display terminal is suitable for according to the ambient brightness signal that receives, and regulates the control voltage of the feed circuit of display terminal by brightness regulating circuit.
Described brightness class has fourth gear at least, and it regulates the brightness of display terminal automatically according to ambient brightness.
Can in control program, set several grades of brightness, and the corresponding master control borad of each grade outputs to the magnitude of voltage of backlight control pin.
Specifically by CPU according to the setting of control program with by the brightness data that light activated element collects, judge its brightness in which grade, thereby decision outputs to the magnitude of voltage of display terminal.And then the brightness regulation of realization display terminal, can realize automatic adjusting.
Wherein, light activated element is 8 to the collection of simulating signal, so can be divided into 256 grades to ambient brightness at most, in the data of collection, 0 grade of expression ambient brightness is the darkest, and representative does not have the situation of light, and 255 grades of correspondences the strongest situation of ambient light.The brightness of program setting display terminal is divided into four class, is respectively A, B, C, D shelves, also can establish the class of other quantity as required.The data of gathering when light activated element are between 0～64 the time, and the brightness of corresponding display terminal is exactly the D shelves, this moment feed circuit supply voltage 0.25 times of voltage when being high-high brightness; When the data of gathering were between 65～128, the brightness of corresponding display terminal was exactly the C shelves, this moment feed circuit supply voltage 0.5 times of voltage when being high-high brightness; When the data of gathering were between 129～192, the brightness of corresponding display terminal was exactly the B shelves, this moment feed circuit supply voltage 0.75 times of voltage when being high-high brightness; When the data of gathering were between 192～255, the brightness of corresponding display terminal was exactly the A shelves, the voltage that requires when the supply voltage of feed circuit is for high-high brightness at this moment.
In concrete the application, light activated element can be set once sampled to ambient brightness every several seconds, send CPU then to, CPU can be according to the setting of program, compare with the original scope of setting gathering the data of coming in, judge these data then in which scope, if at the A shelves, just controlling supply voltage is maximum voltage; If at the B shelves, just control supply voltage and be maximum voltage 0.75 times, at this moment, ambient brightness dies down, and the brightness of display terminal is suitably deepening also, and the brightness that has realized display terminal is along with the die down process of also corresponding downward modulation of ambient brightness.On the contrary, if the ambient brightness grow becomes the A shelves by original B shelves, supply voltage will be by 0.75 times of maximum voltage so, be elevated to maximum voltage, the brightness of display terminal will raise, and has realized the process of brightness corresponding rising along with the grow of ambient brightness of display terminal.In like manner, other youngster class change procedure also is the same.
Display terminal of the present invention is regulated the apparatus and method of brightness automatically, regulates the brightness of display terminal according to the power of ambient brightness, thereby makes picture be more suitable for watching of human eye.Brightness adjusting from high to low also can reduce the power consumption of complete machine, has avoided fearless energy dissipation.Mainly be applicable to LCDs, also be applicable to other display terminal.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (10)
1. the device of a display terminal automatically regulating brightness, be used for regulating the brightness of display terminal, it is characterized in that, comprise ambient brightness collecting unit, control module according to ambient brightness, described ambient brightness collecting unit is electrically connected with control module, and described control module is electrically connected with display terminal.
2. the device of display terminal automatically regulating brightness according to claim 1 is characterized in that, described ambient brightness collecting unit comprises light activated element, and described control module is provided with photosensitive control interface, and described light activated element is plugged on the photosensitive control interface.
3. the device of display terminal automatically regulating brightness according to claim 1 and 2, it is characterized in that, described control module comprises CPU, photosensitive control circuit, brightness regulating circuit, the signal of the ambient brightness of described light activated element collection is passed to photosensitive control circuit, photosensitive control circuit is passed to CPU after the signal that receives is handled, CPU regulates the brightness of display terminal according to the signal controlling brightness regulating circuit that receives.
4. the device of display terminal automatically regulating brightness according to claim 3 is characterized in that, described display terminal is connected with feed circuit, and described brightness regulating circuit is electrically connected with feed circuit.
5. the method for a display terminal automatically regulating brightness is characterized in that, it can regulate the brightness of display terminal according to ambient brightness, may further comprise the steps:
A, ambient brightness collecting unit are gathered the ambient brightness signal, and signal is passed to control module;
The brightness of the signal controlling display terminal that B, described control module basis receive.
6. the method for display terminal automatically regulating brightness according to claim 5 is characterized in that, described steps A comprises step:
A1, light activated element gather the simulating signal of ambient brightness, and simulating signal is passed to photosensitive control circuit;
A2, photosensitive control circuit become digital signal with analog signal conversion, and send digital signal to CPU.
7. the method for display terminal automatically regulating brightness according to claim 5 is characterized in that, among the described step B, control module is set a plurality of brightness class, and each brightness class is the different brightness of corresponding display terminal respectively.
8. the method for display terminal automatically regulating brightness according to claim 7, it is characterized in that, among the described step B, CPU judges the brightness class that display terminal is suitable for according to the ambient brightness signal that receives, and regulates the supply voltage of the feed circuit of display terminal by brightness regulating circuit.
9. according to the method for claim 7 or 8 described display terminal automatically regulating brightness, it is characterized in that described brightness class has fourth gear.
10. according to the method for each described display terminal automatically regulating brightness of claim 5 to 8, it is characterized in that it regulates the brightness of display terminal automatically according to ambient brightness, described display terminal is a LCDs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100638671A CN101236739A (en) | 2007-02-13 | 2007-02-13 | Method and apparatus for display terminal automatically regulating brightness |
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| CNA2007100638671A CN101236739A (en) | 2007-02-13 | 2007-02-13 | Method and apparatus for display terminal automatically regulating brightness |
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| CNA2007100638671A Pending CN101236739A (en) | 2007-02-13 | 2007-02-13 | Method and apparatus for display terminal automatically regulating brightness |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102054468A (en) * | 2011-01-06 | 2011-05-11 | 广东威创视讯科技股份有限公司 | Automatic brightness adjusting device for digital light processing (DLP) split display system |
| CN102469659A (en) * | 2010-11-18 | 2012-05-23 | 珠海格力电器股份有限公司 | Intelligent light control system and control method |
| CN102682716A (en) * | 2012-04-28 | 2012-09-19 | 深圳光启创新技术有限公司 | Method and device for regulating screen brightness and electronic device |
| CN103112397A (en) * | 2013-03-08 | 2013-05-22 | 刘仁国 | Global position system (GPS) radar head-up display road safety precaution device |
| CN104751825A (en) * | 2015-04-08 | 2015-07-01 | 恒银金融科技有限公司 | Brightness adjustment system and method of display screen of financial self-service terminal |
| 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 |
| CN106527726A (en) * | 2016-11-20 | 2017-03-22 | 滁州职业技术学院 | Display screen brightness control method and display terminal |
| CN106683611A (en) * | 2016-12-30 | 2017-05-17 | 马鞍山佳鼎通信科技有限公司 | LED screen brightness regulation system |
| CN107068116A (en) * | 2017-05-11 | 2017-08-18 | 颜声林 | The method and display terminal of a kind of display brightness regulation |
| CN108695999A (en) * | 2017-04-07 | 2018-10-23 | Oppo广东移动通信有限公司 | Data throw screen method, apparatus, storage medium and electronic equipment |
-
2007
- 2007-02-13 CN CNA2007100638671A patent/CN101236739A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102469659A (en) * | 2010-11-18 | 2012-05-23 | 珠海格力电器股份有限公司 | Intelligent light control system and control method |
| CN102054468A (en) * | 2011-01-06 | 2011-05-11 | 广东威创视讯科技股份有限公司 | Automatic brightness adjusting device for digital light processing (DLP) split display system |
| CN102682716A (en) * | 2012-04-28 | 2012-09-19 | 深圳光启创新技术有限公司 | Method and device for regulating screen brightness and electronic device |
| CN103112397A (en) * | 2013-03-08 | 2013-05-22 | 刘仁国 | Global position system (GPS) radar head-up display road safety precaution device |
| CN104751825A (en) * | 2015-04-08 | 2015-07-01 | 恒银金融科技有限公司 | Brightness adjustment system and method of display screen of financial self-service terminal |
| CN104751825B (en) * | 2015-04-08 | 2023-10-03 | 恒银金融科技股份有限公司 | Display screen brightness adjusting system and adjusting method of financial self-service terminal |
| 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 |
| CN106527726A (en) * | 2016-11-20 | 2017-03-22 | 滁州职业技术学院 | Display screen brightness control method and display terminal |
| CN106683611A (en) * | 2016-12-30 | 2017-05-17 | 马鞍山佳鼎通信科技有限公司 | LED screen brightness regulation system |
| CN108695999A (en) * | 2017-04-07 | 2018-10-23 | Oppo广东移动通信有限公司 | Data throw screen method, apparatus, storage medium and electronic equipment |
| CN107068116A (en) * | 2017-05-11 | 2017-08-18 | 颜声林 | The method and display terminal of a kind of display brightness regulation |
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Open date: 20080806 |