CN100378767C - Method for regulating brightness of display device - Google Patents
Method for regulating brightness of display device Download PDFInfo
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- CN100378767C CN100378767C CNB200410004033XA CN200410004033A CN100378767C CN 100378767 C CN100378767 C CN 100378767C CN B200410004033X A CNB200410004033X A CN B200410004033XA CN 200410004033 A CN200410004033 A CN 200410004033A CN 100378767 C CN100378767 C CN 100378767C
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Abstract
The present invention relates to a method for adjusting the lightness of a display device. The method is used for instantly adjusting the lightness of a face plate, and comprises the following steps: firstly, a light detector is used for detecting lightness to generate a first reference value and a second reference value; secondly, a conversion formula is used for converting the first reference value and the second reference value to obtain a lightness step value; the obtained lightness step value is compared with a preset value of the face plate; the difference between the lightness step value and the preset value is judged whether to be larger than a critical value, if the difference is smaller than the critical value, then indicate that the lightness change is not large and still suitable for a user to operate, and do not change the preset lightness value; contrarily, if the difference is larger than the critical value, then carry out lightness adjustment according to an adjustment value corresponding to the light step value to cause the lightness of a display device to accord with a peripheral use environment and the requirements of the user.
Description
Technical field
The invention relates to a kind of method of adjusting display device brightness, refer to a kind of a kind of method of adjusting the display device brightness of computer apparatus that is applicable to especially.
Background technology
The method of general known adjustment display device brightness, being to use manual mode to control brightness on panel changes, as shown in Figure 1, (for example: panel computer) 5 surface group is provided with and adjusts key 6 to adjust display parameter, with the brightness of indirect adjustment display frame display device.Yet this kind control mode is everlasting and is worked under the brighter backlight state, owing to use brighter display frame relatively, display device 5 consumes higher power, cause battery shortening service time, and the user can operate under more uncomfortable environment also.Secondly, when the display frame of display device 5 was in high backlight state (high brightness) running for a long time, also shortened the serviceable life of LCD backlight thereupon.If the user is from being about to display device 5 brightness increase, when the user enters darker environment by brighter environment, because the display frame brightness of display device is bright excessively, this will cause the puzzlement of user on reading.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of method of adjusting display device brightness, can adjust the brightness of display device with the shading value of display device position, to save the electric power that display device was consumed, increases its life-span.
Another object of the present invention is to provide a kind of method of adjusting display device brightness, can adjust the brightness of display device with the shading value of display device position, smooth-going with the performance of overall brightness modulation, make the user more comfortable.
For achieving the above object, the method for adjustment display device provided by the invention brightness comprises the following steps:
(A) judge whether display device is open state, non-as if display device is open state, then execution in step (H);
(B) optical detector produces first reference value;
(C) optical detector produces second reference value;
(D) foundation first reference value and second reference value are to produce the luminance step value;
(E) difference of judging luminance step value and preset value is not surely greater than critical value, and then execution in step (H) is false;
(F) according to the pairing adjusted value of luminance step value adjusting preset value, and with its storage;
(G) according to the size of preset value to adjust the brightness of display device; And
(H) finish to carry out.
Description of drawings
Fig. 1 is the synoptic diagram of known display device.
Fig. 2 is the synoptic diagram of display device of the present invention.
Fig. 3 adjusts the process flow diagram of display device brightness method for the present invention.
Embodiment
For more understanding technology contents of the present invention, be described as follows especially exemplified by a preferred embodiment.
As shown in Figure 2, display device 10 inner groups are established an embedded Control wafer 14 and optical detector 13, and by the brightness of optical detector 13 with detecting display device 10 present environment, and the running of matching embedded type control wafer 14 is to calculate the preferable brightness of display device 10 display frames, make display device 10 under than lightness environment, the brightness of its display frame automatically switches to brighter brightness, and display device 10 is under than the darkness environment, and the bright sky of its display frame automatically switches to darker brightness.Thus, the user will can not cross the bright or dark excessively uncomfortable situation that produces because of the brightness of display frame.Relevant the present invention adjusts the flow process of display device brightness method, please earlier with reference to Fig. 3, after the method begins to carry out, whether it at first detects panel is open state (step S31), if open state, can produce first reference value (step S32) and second reference value (step S33) via optical detector 13, first reference value is by the infrared ray light value of optical detector 13 detecting display device 10 place environment, second reference value is by the visible light value and the infrared ray light value of optical detector 13 detecting display device 10 place environment, this two reference value is calculated through a conversion formula, can be got a luminance step value (step S34).Wherein, conversion formula is as follows:
R=first reference value/second reference value (1)
Brightness value=second reference value * 0.46 * e
-3.13R(2)
But do not exceed with above-mentioned.Then, again brightness value is carried out analog/digital conversion (A/Dconvertion) to obtain the luminance step value, the preferable scope of luminance step value is 0-255,0 this panel luminance of expression is for the darkest, 255 are represented panel luminance is the brightest luminance step value, well imagine ground, the scope of luminance step value can be decided according to user's actual demand, does not also exceed with above-mentioned.Luminance step value and the preset value that to learn via conversion formula compare, and learn difference between two numerical value, and the preset value present brightness value that is display device 10, and with this values of disparity compare with critical value (threshold) (step S35), as the difference value between two numerical value during not greater than critical value, the brightness of then representing the environment at display device 10 places changes little, still in the visually acceptable brightness variation range of user, the brightness that then keeps display frame does not promptly change the brightness value of display device 10; If the difference value between two numerical value is during greater than critical value, the ambient brightness of then representing display device 10 places changes and to surpass the scope that variation has been allowed in brightness, at this moment, according to the pairing adjusted value of luminance step value to adjust preset value, and store (step S36), it is stored into preset value after the renewal.At last according to the size of preset value to adjust the brightness (step S37) of display device 10, finish the execution (step S38) that the present invention adjusts display device 10 brightness methods.
Above-described adjusted value is relevant with the numerical value of luminance step value, at this, the scope of luminance step value is distinguished into four sections, but not as limit, 0-60 is first section, its corresponding adjusted value is 1, and 61-125 is second section, and its corresponding adjusted value is 2,126-216 is the 3rd section, its corresponding adjusted value is 3, and 217-255 is the 4th section, and its corresponding adjusted value is 4.When the luminance step value is 100 (falling within second section), then increasing by 2 or to fall few 2 be a unit of adjustment, the adjust brightness that can make display device 10 of Using such method can be adjusted to the brightness value of the most suitable user's use smooth-goingly when this luminance step value is being adjusted in expression.If the luminance step value is during greater than preset value, this adjustment is meant increase; If the luminance step value is during less than preset value, this adjustment is meant minimizing.Critical value is whether to carry out the foundation that display device 10 brightness are adjusted in order to decision, and its value can be 5,10 or 15, and 5 is a preferable selection in this embodiment.When the luminance step value is 100, preset value is 104, because the differences of two values are less than 5, so do not carry out the adjustment of display device 10 brightness; When the luminance step value is 95, preset value is 104, because the differences of two values are greater than 5, thereby carries out the adjustment of display device 10 brightness, preset value is deducted 2, and store into new preset value (value is 102); When the luminance step value is 110, preset value is 104, because the differences of two values are greater than 5, thereby carries out the adjustment of display device 10 brightness, preset value is increased by 2, and store into new preset value (value is 106).
As shown in the above description, the present invention utilizes optical detector 13 to change with the brightness of detecting user place environment, and then the panel luminance of control display device 10, makes the performance of overall brightness modulation smooth-going, makes user's visual experience more comfortable.Wherein, display device 10 can be panel computer, LCD, notebook computer or televisor.
The foregoing description only is to give an example for convenience of description, and the interest field that the present invention advocated should be as the criterion so that claim is described certainly, but not only limits to the foregoing description.
Claims (11)
1. a method of adjusting display device brightness comprises the following steps:
(A) judge whether this display device is open state, non-as if this display device is open state, then execution in step (H);
(B) the infrared ray light value of optical detector detection display device place environmental variance is first reference value;
(C) the visible light value and the infrared ray light value of this optical detector detection display device place environmental variance are second reference value;
(D) according to this first reference value and this second reference value to produce a brightness value, again brightness value is carried out analog/digital conversion to obtain the luminance step value; Wherein, brightness value=second reference value * 0.46*e
-3.13R, R=first reference value/second reference value;
(E) whether the difference of judging this a luminance step value and a default value is greater than a critical value, and then execution in step (H) is false;
(F) according to the pairing adjusted value of this luminance step value adjusting this default value, and with its storage;
(G) comply with the size of this default value to adjust the brightness of this display device;
And
(H) finish to carry out.
2. the method for claim 1 is characterized in that, this display device is flat computer, LCD, mobile computer or televisor.
3. the method for claim 1 is characterized in that, this optical detector places the surface of this display device.
4. the method for claim 1 is characterized in that, if this luminance step value greater than this default value, and its difference is adjusted this default value and is represented this default value is added this adjusted value during greater than this critical value.
5. method as claimed in claim 4 is characterized in that the mobility scale of this luminance step value can be distinguished at least one section, and each section corresponds to this different adjusted values.
6. method as claimed in claim 5 is characterized in that mobility scale circle of this luminance step value is between 0-255.
7. method as claimed in claim 5 is characterized in that, this at least one section is four sections, and this adjusted value that corresponds to is respectively 1,2,3,4.
8. the method for claim 1 is characterized in that, if this luminance step value less than this default value, and its difference is adjusted this default value and is represented this default value is deducted this adjusted value during greater than this critical value.
9. method as claimed in claim 8 is characterized in that the mobility scale of this luminance step value can be distinguished at least one section, and each section corresponds to this different adjusted values.
10. method as claimed in claim 9 is characterized in that mobility scale circle of this luminance step value is between 0-255.
11. method as claimed in claim 9 is characterized in that, this at least one section is four sections, and this adjusted value that corresponds to is respectively 1,2,3,4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410004033XA CN100378767C (en) | 2004-02-04 | 2004-02-04 | Method for regulating brightness of display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200410004033XA CN100378767C (en) | 2004-02-04 | 2004-02-04 | Method for regulating brightness of display device |
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| CN1652169A CN1652169A (en) | 2005-08-10 |
| CN100378767C true CN100378767C (en) | 2008-04-02 |
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| CNB200410004033XA Expired - Fee Related CN100378767C (en) | 2004-02-04 | 2004-02-04 | Method for regulating brightness of display device |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100781651B1 (en) | 2006-11-06 | 2007-12-03 | 삼성전자주식회사 | Apparatus and method for displaying screen in portable terminal |
| CN100583965C (en) * | 2007-06-01 | 2010-01-20 | 海尔集团公司 | Brightness control method and control system for on and off of TV set |
| JP2010160272A (en) * | 2009-01-07 | 2010-07-22 | Canon Inc | Display control device and control method thereof |
| CN101789230B (en) * | 2009-01-24 | 2013-09-04 | 联想(北京)有限公司 | Electronic equipment and display device screen brightness adjusting method thereof |
| CN103247281B (en) * | 2012-02-13 | 2015-11-25 | 联想(北京)有限公司 | A kind of method and electronic equipment adjusting display brightness |
| WO2015033639A1 (en) * | 2013-09-09 | 2015-03-12 | オリンパス株式会社 | Display control apparatus |
| CN103996392B (en) | 2014-05-12 | 2016-04-13 | 合肥鑫晟光电科技有限公司 | A kind of method, circuit and display device adjusting screen intensity |
| CN106033666B (en) * | 2015-03-18 | 2019-02-05 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN106157927A (en) * | 2015-04-08 | 2016-11-23 | 联想(北京)有限公司 | Electronic equipment and control method |
| CN107507601A (en) * | 2017-08-23 | 2017-12-22 | 杭州联吉技术有限公司 | A kind of method and system of the camera supervised interface display effect of adjust automatically |
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| JP2002297096A (en) * | 2001-03-30 | 2002-10-09 | Toshiba Corp | Organic electroluminescence device |
| CN1400579A (en) * | 2001-07-31 | 2003-03-05 | Lg电子株式会社 | Circuit and method for driving self-luminous display device |
| JP2003150089A (en) * | 2001-11-08 | 2003-05-21 | Maspro Denkoh Corp | Display device |
| US20030201956A1 (en) * | 2002-04-30 | 2003-10-30 | Daryl Anderson | Image display |
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2004
- 2004-02-04 CN CNB200410004033XA patent/CN100378767C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002297096A (en) * | 2001-03-30 | 2002-10-09 | Toshiba Corp | Organic electroluminescence device |
| CN1400579A (en) * | 2001-07-31 | 2003-03-05 | Lg电子株式会社 | Circuit and method for driving self-luminous display device |
| JP2003150089A (en) * | 2001-11-08 | 2003-05-21 | Maspro Denkoh Corp | Display device |
| US20030201956A1 (en) * | 2002-04-30 | 2003-10-30 | Daryl Anderson | Image display |
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