CN105185301A - Display screen brightness adjustment method - Google Patents
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Abstract
The invention relates to a display screen brightness adjustment method, comprising the steps as follows: (i) periodically checking the current ambient light brightness; (ii) judging whether the current ambient light brightness is greater than a stored maximum ambient light value or smaller than a stored minimum ambient light value; (iii) if the judgment result of step (ii) shows that the current ambient light brightness is greater than the stored maximum ambient light value or smaller than the stored minimum ambient light value, judging whether the number of successions reaches K; (iv) if the judgment result of step (iii) shows that the number of successions reaches K, using the detected K current ambient light brightness values greater than the stored maximum ambient light value or smaller than the stored minimum ambient light value to update the maximum ambient light value or the minimum ambient light value correspondingly, generating multiple ambient light sections based on the maximum ambient light value and the minimum ambient light value after the maximum ambient light value or the minimum ambient light value are updated in order to update a correspondence table of ambient light and display screen brightness, and obtaining a display screen brightness adjustment target value according to the correspondence table after updating; and (v) controlling the brightness of the display screen by using the display screen brightness adjustment target value. Therefore, the level of intelligence in automatic display screen brightness adjustment can be enhanced.
Description
Technical field
Display control technology field of the present invention, particularly a kind of brightness of display screen control method.
Background technology
In today of intellectual technology development, display technique is more and more applied in the middle of our life.Liquid crystal display screen of mobile phone, liquid crystal display device on equipment, indoor and outdoor LED display more and more enters the life of people, meanwhile people require to become more and more higher to the display of these display screens, brightness of display screen is the first element of people's perception display screen, and the adjustment of therefore brightness becomes particularly important.
Current brightness regulation is divided into manual adjustments, timing regulates and automatically regulates, and wherein automatic regulating lightness needs the cooperation of external unit (surround lighting collecting device) to complete adjustment, and for LED display, annexation is illustrated in fig. 1 shown below.In FIG, controller driving LED display screen shows, and the control of all controlled device of any state of display, comprises the change of brightness; Namely controlling data variation (also surround lighting change) by gathering light probe then through the surround lighting that sets in advance and LED display brightness regulation relation table, the brightness value of correspondence being configured to LED display, realizing the object that auto brightness controls.
The primary link of the ABC mechanism shown in Fig. 1 needs configuration surroundings light and LED display brightness mapping table (as shown in Figure 2), and these need to test in advance, then by software merit rating to controller.But this mapping table, need the artificial test through several days to obtain, and surround lighting have difference, so will show that rational mapping table is not easy very much along with the difference change of weather; In addition, this so-called automatic adjustment does not reach in fact real automatic, still need people to be detection and the configuration of carrying out early stage, and the surround lighting configured by this mode and LED display brightness mapping table are fixing, cannot accurately conform in real time and change round the clock.
Summary of the invention
Therefore, for defect of the prior art and deficiency, the present invention proposes a kind of brightness of display screen control method.
Particularly, a kind of brightness of display screen control method that the embodiment of the present invention proposes, for carrying out brightness regulation by a controller to display screen, described controller is electrically connected with surround lighting collecting device.Described brightness of display screen control method comprises step: (i) periodically detects current environmental light brightness, (ii) judge whether current environmental light brightness is greater than storage surround lighting maximal value in the controller or is less than storage surround lighting minimum value in the controller, (iii) if the judged result of step (ii) is yes, judge whether the read-around ratio that current environmental light brightness is greater than described surround lighting maximal value or is less than described surround lighting minimum value reaches K time, wherein K be greater than 1 positive integer, (iv) if the judged result in step (iii) is yes, the current environmental light brightness utilizing the K that detects to be greater than described surround lighting maximal value or to be less than described surround lighting minimum value upgrades described surround lighting maximal value or described surround lighting minimum value accordingly, and utilize surround lighting maximal value and surround lighting minimum value to generate multiple surround lighting segmentation to upgrade surround lighting and brightness of display screen mapping table after the described surround lighting maximal value of renewal or described surround lighting minimum value, and obtain brightness of display screen according to the surround lighting after renewal and brightness of display screen mapping table and regulate desired value, and (v) utilizes brightness of display screen to regulate desired value to be controlled the brightness of described display screen by described controller.
In one embodiment of the invention, in above-mentioned brightness of display screen control method, if the judged result of step (iii) is no, regulate desired value according to the brightness of display screen that the surround lighting before renewal and brightness of display screen mapping table obtain in step (v).
In one embodiment of the invention, in above-mentioned brightness of display screen control method, if the judged result of step (ii) is no, judge whether the duration not upgrading surround lighting and brightness of display screen mapping table exceedes predetermined time period; And when the described duration exceedes described predetermined time period, generate multiple surround lighting segmentation and in conjunction with the maximal value of display screen object brightness and minimum value to regenerate surround lighting and brightness of display screen mapping table and next to perform step (i) according to storing initial environment light maximal value in the controller and initial environment light minimum value.
In one embodiment of the invention, in above-mentioned brightness of display screen control method, if the judged result of step (ii) is no, judge whether the duration not upgrading surround lighting and brightness of display screen mapping table exceedes predetermined time period; And when the described duration does not exceed described predetermined time period, regulate desired value according to the brightness of display screen that the surround lighting before renewal and brightness of display screen mapping table obtain in step (v).
In one embodiment of the invention, above-mentioned brightness of display screen control method before the step (i) and described controller also comprise after starting: generate multiple surround lighting segmentation according to the initial environment light maximal value stored in the controller and initial environment light minimum value and in conjunction with the maximal value of display screen object brightness and minimum value with build environment light and brightness of display screen mapping table.
In one embodiment of the invention, in above-mentioned brightness of display screen control method, display screen object brightness between the maximal value of described display screen object brightness and minimum value is divided into n section, and wherein n is greater than the positive integer of 1 and equal with the quantity of described multiple surround lighting segmentation.
In one embodiment of the invention, above-mentioned brightness of display screen control method is in described surround lighting and brightness of display screen mapping table, and the display screen object brightness between the maximal value of the environmental light brightness between described initial environment light maximal value and initial environment light minimum value and described display screen object brightness and minimum value is notch cuttype corresponding relation.
In one embodiment of the invention, above-mentioned brightness of display screen control method is in surround lighting and brightness of display screen mapping table, and the environmental light brightness between described surround lighting maximal value and described surround lighting minimum value and display screen object brightness are notch cuttype corresponding relation.
In one embodiment of the invention, the described controller in above-mentioned brightness of display screen control method is the asynchronous control-card in the asynchronous control system of LED display.
In one embodiment of the invention, the described controller in above-mentioned brightness of display screen control method is the multifunction card with light probe interface in the synchronous control system of LED display, and described multifunction card is by sending card connection control computing machine.
As from the foregoing, the embodiment of the present invention can realize following one or more beneficial effect: 1) realize completely intelligent automatic regulated with the brightness of display screen of environmental change, reduces user to the interference of ABC; 2) generation regulating which loaded down with trivial details manual detection of initial stage and record and surround lighting and brightness of display screen mapping table in prior art is reduced; C) convenient for users to use, decrease the manpower and resources costs wasted for ABC.
By the detailed description below with reference to accompanying drawing, other side of the present invention and feature become obvious.But it should be known that this accompanying drawing is only the object design of explanation, instead of as the restriction of scope of the present invention, this is because it should with reference to additional claim.Should also be appreciated that, unless otherwise noted, unnecessaryly draw accompanying drawing to scale, they only try hard to structure described herein and flow process are described conceptually.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Fig. 1 is the hardware structure figure of LED display automatic brightness adjustment of the prior art.
Fig. 2 is a kind of surround lighting of the prior art and brightness of display screen mapping table.
Fig. 3 is the process flow diagram of a kind of LED display brightness adjusting method of the embodiment of the present invention.
Fig. 4 is a kind of environmental light brightness of the embodiment of the present invention and the corresponding relation figure of display screen object brightness.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
The following embodiment of the present invention is on the basis of existing LED display ABC, configuration surroundings light in existing adjustment flow process and brightness of display screen mapping table link is reduced to and automatically detects configuration; It is specially automatically by the detection record contrast of periodically surround lighting, obtains surround lighting in the maximal value of a period of time and minimum value, then according to maximal value and minimum value, surround lighting scope is evenly divided into n section; Brightness range between the maximum target brightness that LED display can be shown again afterwards and minimum target brightness is also divided into n section, the brightness of display screen relation table that such surround lighting is corresponding just defines, and then just can carry out ABC according to the surround lighting automatically formed and brightness of display screen mapping table to LED display.Wherein, the test example of surround lighting detects once (within such as every 5 minutes, detecting once) and record every time span L1 in this way, in order to the sudden change of the surround lighting that real-time response weather and change round the clock bring, the segmentation again of (such as each hour carries out once) surround lighting can be carried out once by length L2 at set intervals.
Below in conjunction with Fig. 3 and Fig. 4, a kind of LED display brightness adjusting method that the embodiment of the present invention proposes is described in detail.Wherein, Fig. 3 is the process flow diagram of the LED display brightness adjusting method of the present embodiment, and Fig. 4 is the environmental light brightness of the present embodiment and the corresponding relation figure of display screen object brightness.
Particularly, the LED display brightness adjusting method of the present embodiment comprises the following steps S31 ~ S39:
Step S31: preset environment light maximal value and surround lighting minimum value in the controller.Particularly, the control system of LED display is divided into asynchronous control system and synchronous control system; Asynchronous control-card wherein in asynchronous control system can as the controller of LED display brightness regulation, and surround lighting collecting device such as light probe electrical connection asynchronous control-card; For synchronous control system, multifunction card (the MFN300 multifunction card of such as Xi'an Novastar Electronic Technology Co., Ltd.) wherein can as the controller of LED display brightness regulation, light probe electrical connection multifunction card, and multifunction card is usual via sending card connection control computing machine in synchronous control system; Therefore, for asynchronous control system and synchronous control system, can when controller (asynchronous control-card or multifunction card) dispatches from the factory, default contexts light maximal value and surround lighting minimum value is pre-set according to empirical value under normal circumstances, to realize just automatic brightness adjustment can being carried out after controller starts, otherwise just ABC can be completed after time span L2 will be waited until.Certainly, also can preset environment light maximal value and surround lighting minimum value in the controller based on experience value in the application process after controller dispatches from the factory.For ease of follow-up explanation, surround lighting maximal value preset in the controller and surround lighting minimum value are referred to as initial environment light maximal value and initial environment light minimum value, and it stores in the controller.
Step S32: environmentally light maximal value (max) and the light segmentation of surround lighting minimum value (min) build environment generate [surround lighting and brightness of display screen mapping table] in conjunction with the maximal value of display screen object brightness and minimum value.Particularly, controller start after generation first [surround lighting and brightness of display screen mapping table] time, surround lighting maximal value (max) herein and surround lighting minimum value (min) are aforesaid initial environment light maximal value and initial environment light minimum value; And if maximal value (max) and/or minimum value (min) were updated in subsequent process, then surround lighting maximal value (max) herein and surround lighting minimum value (min) were the value after renewal; In brief, no matter which kind of situation, surround lighting maximal value (max) herein and surround lighting minimum value (min) can be referred to as current environment light maximal value and current environment light minimum value, and it stores in the controller.
Hold above-mentioned, environmental light brightness scope between current environment light maximal value (max) and current environment light minimum value (min) is divided into n section, and the display screen subject brightness range between the maximal value of display screen object brightness and minimum value is also divided into n section; And between current environment light maximal value (max) and current environment light minimum value (min), generate [surround lighting and brightness of display screen mapping table] according to linear corresponding relation, the maximal value that the brightness exceeding LED display during current environment light maximal value (max) remains display screen object brightness is constant, the minimum value that the brightness being less than LED display during current environment light minimum value (min) remains display screen object brightness is constant, as shown in Figure 4.Particularly, in the diagram, the maximal value of display screen object brightness and minimum value are respectively 100% and 10%, n=9, between surround lighting and display screen object brightness, corresponding relation is the variation relation of a notch cuttype, in each segmentation limit of surround lighting, brightness of display screen remains unchanged, and after reaching the maximal value of display screen object brightness and minimum value, brightness of display screen also remains unchanged.It is worth mentioning that, the minimum value of display screen object brightness is not limited to 10% herein, and it can carry out elasticity setting according to actual needs; The value of n is also not limited to 9, because the span of surround lighting is very large, often can there is slight change, and brightness of display screen range of adjustment is relatively little, the object of segmentation does not want to allow the brightness of display screen affect by the slight change of surround lighting to meet some user, and the degree of this slight change is exactly the size of segmentation, if desired regulates trickleer, segmentation is larger, and also namely the value of n is larger.
Step S33: periodically detect current environmental light brightness (H).Current environmental light brightness (H) herein can be undertaken detecting and storing by controller by the such as light probe collection of the surround lighting collecting device of connection control device, because light probe is exactly be arranged near LED display usually, therefore its environmental light brightness collected directly can think the environmental light brightness of LED display.In addition, detect current environmental light brightness (H) and carry out in a periodic fashion, within such as every 5 minutes, carry out one-time detection.
Namely step S34: judge whether H>max or H<min, also judge whether current environmental light brightness (H) is greater than surround lighting maximal value (max) or is less than surround lighting minimum value (min).If judged result is "No", then carry out step S37; If judged result is "Yes", then counter can be utilized to count, carry out step S35 with the judged result of adding up continuous how many times for "Yes".It is worth mentioning that herein, if the current environmental light brightness detected (H) is greater than surround lighting maximal value (max) or is less than surround lighting minimum value (min), then represent that current surround lighting maximal value (max) or minimum value (min) may be not suitable for present intensity and regulate, but in order to prevent accidental illumination or block the error of appearance, so carry out repeated detection judgement.
Step S35: in determining step S34, judged result is whether the read-around ratio of "Yes" reaches 3 times; If judged result is "Yes", then carry out step S36; If judged result is "No", then carry out step S38.Particularly, if reach the current environmental light brightness (H) occurring continuously for 3 times detecting be greater than surround lighting maximal value (max) or be less than surround lighting minimum value (min), represent that current environment light maximal value (max) or current environment light minimum value (min) can not meet brightness regulation and require that, illustrate that current environment there occurs change, such as weather becomes cloudy or darkness, or it is light already or sunny.Be understandable that herein, if judged result is occur that a judged result is "No" before the read-around ratio of "Yes" does not reach 3 in step S34, then can resets by counting, and jump to step S37.In addition, it is worth mentioning that, read-around ratio is not limited to reach 3 times herein, also can be the positive integer that other are greater than 1.
Step S36: upgrade max or min, and regenerate surround lighting segmentation to upgrade [surround lighting and brightness of display screen mapping table] according to max and min after upgrading.Particularly, if be that H>max reaches 3 times in step S35, in order to avoid the situation of the unexpected direct projection of high light, remove a maximal value in this current environmental light brightness of continuous 3 times (H), the mean value then getting remaining multiple current environmental light brightness (H) is stored to controller as the updated value of surround lighting maximal value max; If be that H<min reaches 3 times in step S35, in order to avoid situation about being blocked suddenly, remove a minimum value in this current environmental light brightness of continuous 3 times (H), then get the updated value of mean value as surround lighting minimum value min of remaining multiple current environmental light brightness (H).After obtaining the updated value of max or min, again the surround lighting scope between surround lighting maximal value max and surround lighting minimum value min is divided into n section, to obtain new [surround lighting and brightness of display screen mapping table], thus realize upgrading [surround lighting and brightness of display screen mapping table]; Carry out step S38 afterwards.
Step S37: judge whether not upgrade more than one hour [surround lighting and brightness of display screen mapping table], if more than one hour, be back to step S32, [surround lighting and brightness of display screen mapping table can prevent or prevent to start to occur that the brightness of display screen adjusting deviation that current environment light maximal value and surround lighting minimum value not too rationally cause is too large so then to utilize the initial environment light maximal value in controller and initial environment light minimum value to regenerate.Be understandable that, also can consider to utilize previous surround lighting maximal value and minimum value to regenerate [surround lighting and brightness of display screen mapping table].In addition, if more than one hour, then step S38 is skipped to.
Step S38: obtain brightness of display screen by [surround lighting and brightness of display screen mapping table] and regulate desired value.Particularly, utilize current environmental light brightness (H) to carry out table lookup operation to [surround lighting and brightness of display screen mapping table], brightness of display screen can be obtained and regulate desired value; And obtaining carrying out step S39 after brightness of display screen regulates desired value.
Step S39: utilize brightness of display screen to regulate desired value to carry out brightness regulation to display screen.Herein, step S39 is performed by controller.Particularly, for the asynchronous control system of LED display, aforesaid step S32, S33, S34, S35, S36, S37 and S38 are performed by the asynchronous control-card as controller; For, the synchronous control system of LED display, aforesaid step S33 is performed by the multifunction card as controller, and step S32, S34, S35, S36, S37 and S38 can perform by connecting the computer for controlling of multifunction card by sending card.
Finally, it should be noted that, the brightness of display screen control method of the embodiment of the present invention is not limited to carry out brightness regulation to LED display, also can be applied to the brightness regulation of other display screens such as LCD display.
In sum, the embodiment of the present invention can realize following one or more beneficial effect: 1) realize completely intelligent automatic regulated with the brightness of display screen of environmental change, reduces user to the interference of ABC; 2) generation regulating which loaded down with trivial details manual detection of initial stage and record and surround lighting and brightness of display screen mapping table in prior art is reduced; C) convenient for users to use, decrease the manpower and resources costs wasted for ABC.
So far, apply specific case herein and set forth the principle of brightness of display screen control method of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention; all will change in specific embodiments and applications; in sum, this description should not be construed as limitation of the present invention, and protection scope of the present invention should be as the criterion with appended claim.
Claims (10)
1. a brightness of display screen control method, for carrying out brightness regulation by a controller to display screen, described controller is electrically connected with surround lighting collecting device; It is characterized in that, described brightness of display screen control method comprises step:
I () periodically detects current environmental light brightness;
(ii) judge whether current environmental light brightness is greater than storage surround lighting maximal value in the controller or is less than storage surround lighting minimum value in the controller;
(iii) if the judged result of step (ii) is yes, judge whether the read-around ratio that current environmental light brightness is greater than described surround lighting maximal value or is less than described surround lighting minimum value reaches K time, wherein K be greater than 1 positive integer;
(iv) if the judged result in step (iii) is yes, the current environmental light brightness utilizing the K that detects to be greater than described surround lighting maximal value or to be less than described surround lighting minimum value upgrades described surround lighting maximal value or described surround lighting minimum value accordingly, and utilize surround lighting maximal value and surround lighting minimum value to generate multiple surround lighting segmentation to upgrade surround lighting and brightness of display screen mapping table after the described surround lighting maximal value of renewal or described surround lighting minimum value, and obtain brightness of display screen according to the surround lighting after renewal and brightness of display screen mapping table and regulate desired value, and
V () utilizes brightness of display screen to regulate desired value to be controlled the brightness of described display screen by described controller.
2. brightness of display screen control method as claimed in claim 1, it is characterized in that, if the judged result of step (iii) is no, regulate desired value according to the brightness of display screen that the surround lighting before renewal and brightness of display screen mapping table obtain in step (v).
3. brightness of display screen control method as claimed in claim 1, is characterized in that, if the judged result of step (ii) is no, judges whether the duration not upgrading surround lighting and brightness of display screen mapping table exceedes predetermined time period; And when the described duration exceedes described predetermined time period, generate multiple surround lighting segmentation and in conjunction with the maximal value of display screen object brightness and minimum value to regenerate surround lighting and brightness of display screen mapping table and next to perform step (i) according to storing initial environment light maximal value in the controller and initial environment light minimum value.
4. brightness of display screen control method as claimed in claim 1, is characterized in that, if the judged result of step (ii) is no, judges whether the duration not upgrading surround lighting and brightness of display screen mapping table exceedes predetermined time period; And when the described duration does not exceed described predetermined time period, regulate desired value according to the brightness of display screen that the surround lighting before renewal and brightness of display screen mapping table obtain in step (v).
5. brightness of display screen control method as claimed in claim 1, is characterized in that, before step (i) and described controller also comprise after starting:
Multiple surround lighting segmentation is generated and in conjunction with the maximal value of display screen object brightness and minimum value with build environment light and brightness of display screen mapping table according to storing initial environment light maximal value in the controller and initial environment light minimum value.
6. brightness of display screen control method as claimed in claim 5, it is characterized in that, display screen object brightness between the maximal value of described display screen object brightness and minimum value is divided into n section, and wherein n is greater than the positive integer of 1 and equal with the quantity of described multiple surround lighting segmentation.
7. brightness of display screen control method as claimed in claim 5, it is characterized in that, in described surround lighting and brightness of display screen mapping table, the display screen object brightness between the maximal value of the environmental light brightness between described initial environment light maximal value and initial environment light minimum value and described display screen object brightness and minimum value is notch cuttype corresponding relation.
8. brightness of display screen control method as claimed in claim 1, it is characterized in that, in surround lighting and brightness of display screen mapping table, the environmental light brightness between described surround lighting maximal value and described surround lighting minimum value and display screen object brightness are notch cuttype corresponding relation.
9. brightness of display screen control method as claimed in claim 1, it is characterized in that, described controller is the asynchronous control-card in the asynchronous control system of LED display.
10. brightness of display screen control method as claimed in claim 1, it is characterized in that, described controller is the multifunction card with light probe interface in the synchronous control system of LED display, and described multifunction card is by sending card connection control computing machine.
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| CN108494963B (en) * | 2018-03-25 | 2020-11-13 | 东莞市华睿电子科技有限公司 | Brightness control method for mobile phone display screen |
| CN112291633A (en) * | 2019-07-24 | 2021-01-29 | 青岛海信传媒网络技术有限公司 | Method and device for controlling screen brightness of intelligent household equipment |
| CN112291633B (en) * | 2019-07-24 | 2023-03-24 | Vidaa(荷兰)国际控股有限公司 | Method and device for controlling screen brightness of intelligent household equipment |
| CN113035144A (en) * | 2019-12-25 | 2021-06-25 | Oppo广东移动通信有限公司 | Method and device for adjusting display parameters, mobile terminal and storage medium |
| CN113450701A (en) * | 2020-07-22 | 2021-09-28 | 重庆康佳光电技术研究院有限公司 | Data line control method and device, data line driving device and display device |
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| CN105185301B (en) | 2017-11-17 |
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