CN102543036A - Self-adaption adjusting method of display screen luminance - Google Patents
Self-adaption adjusting method of display screen luminance Download PDFInfo
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- CN102543036A CN102543036A CN201110416973XA CN201110416973A CN102543036A CN 102543036 A CN102543036 A CN 102543036A CN 201110416973X A CN201110416973X A CN 201110416973XA CN 201110416973 A CN201110416973 A CN 201110416973A CN 102543036 A CN102543036 A CN 102543036A
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- display screen
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Abstract
The invention relates to a self-adaption adjusting method of display screen luminance, which comprises steps of respectively measuring and recording each luminance value when backlight luminance of a display screen is highest; obtaining average luminance of a video image in real time; reading the currently average luminance by a main chip in an interval circulation way, and obtaining a domain value of the average luminance according to a plurality of video images; and adjusting the luminance of the video images by the main chip through controlling a voltage value of a backlight voltage control pin of the display screen according to a numerical relationship of the average luminance domain value and each luminance value. According to the self-adaption adjusting method of display screen luminance provided by the invention, the luminance of a screen image can be adjusted by a television in a self-adaption way, when the television, particularly a flat television, receives signals with different luminance, and gray levels of images can be reflected fully with no need to adjust a display image of a television screen manually by a user, so that the use convenience of the user is obviously improved, and the vision feeling of the user who is watching a television program is improved.
Description
Technical field
The present invention relates to the method that the brightness of display screen self-adaptation is regulated.
Background technology
A lot of users are when watching the different channel of TV programme in the daily life, the image of TV screen through regular meeting because the variation of different television signals makes the very big difference of bright dark appearance of television video picture.This is that the high-high brightness that has has surpassed 100 because the modulation of each TV station and the instrument and the equipment of programming have certain difference, and the high-high brightness that has is lower than 100.When using non-standard image after watching this demodulation of televisor to the standard signal demodulation so, just be bound to occur bright dark difference, luminance signal supersaturation sometimes, luminance signal is dark excessively again etc. sometimes, ovennodulation or the under modulated phenomenon just often said.When watching certain program of local broadcasting stations, image is very dark, this be need with the image model of TV be transferred to high watch under bright just normal basically; And the program of CCTV felt bright under the bright pattern of height, needed again image model is transferred to softly to watch the inconvenience of the ten minutes concerning the user of adjustment image model so repeatedly down.
Summary of the invention
Problem to above appearance; The invention provides the method that a kind of brightness of display screen self-adaptation is regulated; Make televisor particularly flat panel TV when receiving the signal of different brightness; Can come the brightness of adaptively changing image by televisor, not need the display image of user's hand adjustment TV screen can demonstrate fully the gray-level of image.
The method that brightness of display screen self-adaptation of the present invention is regulated comprises:
A. when the backlight illumination of display screen is the highest, test and record respectively: the maximum brightness value in the display screen; The details in a play not acted out on stage, but told through dialogues details is differentiated the details in a play not acted out on stage, but told through dialogues average brightness value of critical point in the display screen; The moderate moderate average brightness value of brightness in the display screen;
B. with the vision signal of real-time input panel through the AD conversion, analog signal conversion is digital signal after, obtain the current mean flow rate of this video image;
C. said current mean flow rate is read in circulation at interval, and obtains the thresholding of mean flow rate according to a plurality of video images;
D. according to magnitude relationship between the thresholding of said mean flow rate and described maximum brightness value, details in a play not acted out on stage, but told through dialogues average brightness value, the moderate average brightness value, the magnitude of voltage of the back of the body modulating voltage control pin through control display screen is regulated the brightness of video image.
The television screen of liquid crystal or LED all has back of the body modulating voltage control pin usually, and the control of back of the body modulating voltage is the pin in order to carry out increasing when efficiency is tested normally, generally seldom carries out frequent adjustment.Method of the present invention according to the level of this pin control TV screen brightness (0V, the darkest; 3.3V it is the brightest).The image of screen shows dark more, and the current mean flow rate of image is just low more; It is bright more that image shows, the current mean flow rate of image is just high more.Method of the present invention is through the current mean flow rate of the image that reads in real time; And the regulation voltage of back of the body lamp is controlled according to the scope thresholding of this draw brightness; The corresponding input signal of brightness of image can be promoted or reduce, guaranteed user's the effect of watching thus.When the user when the switching of carrying out signal source, program are searched for automatically or are changed channel, system need close regulatory function backlight.
Concrete, gather each gray values of pixel points among the step b, the summation of collection gray-scale value divided by the counting of collection pixel, is obtained the current mean flow rate of this video image.
Concrete, the value scope of the current mean flow rate of said video image is 0～100, if actual test brightness is to come out with the embodied of 0～MAX, the average brightness value that then MAX is corresponding is 100.
Because the debug process of back of the body lamp will accomplish as far as possible that naked eyes are difficult to identification; Therefore bright blackout is being become too fast image (the mean flow rate difference of different images surpasses 100) when carrying out brightness regulation, can be >=300ms the interval time that mean flow rate is read in the interval circulation described in the step c.
Generally, be circulation interval time of reading mean flow rate at interval＞400ms.
Concrete, the method that steps d is regulated video image brightness is:
D1. during the thresholding of mean flow rate＜details in a play not acted out on stage, but told through dialogues average brightness value, to maximum 3.3V, darkfield image brightness is increased the voltage-regulation of described back of the body lamp control pin;
D2. during the thresholding of moderate average brightness value >=mean flow rate >=details in a play not acted out on stage, but told through dialogues average brightness value, with the voltage-regulation of described back of the body lamp control pin to 2.8V;
D3. the thresholding of maximum brightness value/2 >=mean flow rate >=moderate average brightness value, with the voltage-regulation of described back of the body lamp control pin to 2V;
D4. thresholding >=the maximum brightness value of mean flow rate/2 to 1V, make brightness of image reduce to minimum the voltage-regulation of described back of the body lamp control pin.
The method that brightness of display screen self-adaptation of the present invention is regulated; Can work as televisor particularly flat panel TV when receiving the signal of different brightness; Come self-adaptation to regulate the brightness of screen picture by televisor; Do not need the display image of user's hand adjustment TV screen can demonstrate fully the gray-level of image, the raising of highly significant the convenience used of user, the visual experience when having improved user's TV reception.
Below in conjunction with the embodiment of embodiment, foregoing of the present invention is remake further detailed description.But should this be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following instance.Do not breaking away under the above-mentioned technological thought situation of the present invention, various replacements or change according to ordinary skill knowledge and customary means are made all should comprise within the scope of the invention.
Embodiment
The method that brightness of display screen self-adaptation of the present invention is regulated comprises:
A. when the backlight illumination of display screen is the highest, test and record respectively: the maximum brightness value Lmax in the display screen; The details in a play not acted out on stage, but told through dialogues details is differentiated the details in a play not acted out on stage, but told through dialogues average brightness value Lmin of critical point in the display screen; The moderate moderate average brightness value Lmid of brightness in the display screen;
B. with the vision signal of real-time input panel through the AD conversion, analog signal conversion is digital signal after, gather each gray values of pixel points, the summation of collection gray-scale value divided by the counting of collection pixel, is obtained the current mean flow rate of this video image;
C. master chip circulates at interval and reads said current average brightness value APL, and the scope of described average brightness value APL is 0～100, if actual test brightness is to come out with the embodied of 0～MAX, the average brightness value APL that then MAX is corresponding is 100.Obtain the thresholding of mean flow rate according to a plurality of video images.Generally, be＞400ms the interval time of reading mean flow rate of circulating at interval, if the bright blackout of image becomes too fast (the mean flow rate difference of different images surpasses 100), be >=300ms described interval time;
D. master chip is according to magnitude relationship between the thresholding of said mean flow rate and described maximum brightness value Lmax, details in a play not acted out on stage, but told through dialogues average brightness value Lmin, the moderate average brightness value Lmid; The magnitude of voltage of the back of the body modulating voltage control pin through control display screen, regulate the brightness of video image:
D1. during the thresholding of mean flow rate＜details in a play not acted out on stage, but told through dialogues average brightness value, to maximum 3.3V, darkfield image brightness is increased the voltage-regulation of described back of the body lamp control pin;
D2. during the thresholding of moderate average brightness value >=mean flow rate >=details in a play not acted out on stage, but told through dialogues average brightness value, with the voltage-regulation of described back of the body lamp control pin to 2.8V;
D3. the thresholding of maximum brightness value/2 >=mean flow rate >=moderate average brightness value, with the voltage-regulation of described back of the body lamp control pin to 2V;
D4. thresholding >=the maximum brightness value of mean flow rate/2 to 1V, make brightness of image reduce to minimum the voltage-regulation of described back of the body lamp control pin.
Claims (6)
1. the brightness of display screen self-adaptation method of regulating is characterized by and comprises:
A. when the backlight illumination of display screen is the highest, test and record respectively: the maximum brightness value in the display screen; The details in a play not acted out on stage, but told through dialogues details is differentiated the details in a play not acted out on stage, but told through dialogues average brightness value of critical point in the display screen; The moderate moderate average brightness value of brightness in the display screen;
B. with the vision signal of real-time input panel through the AD conversion, analog signal conversion is digital signal after, obtain the current mean flow rate of this video image;
C. said current mean flow rate is read in circulation at interval, and obtains the thresholding of mean flow rate according to a plurality of video images;
D. according to magnitude relationship between the thresholding of said mean flow rate and described maximum brightness value, details in a play not acted out on stage, but told through dialogues average brightness value, the moderate average brightness value, the magnitude of voltage of the back of the body modulating voltage control pin through control display screen is regulated the brightness of video image.
2. the method that brightness of display screen self-adaptation as claimed in claim 1 is regulated is characterized by: gather each gray values of pixel points among the step b, the summation of collection gray-scale value divided by the counting of collection pixel, is obtained the current mean flow rate of this video image.
3. the method that brightness of display screen self-adaptation as claimed in claim 1 is regulated, it is characterized by: the value scope of the current mean flow rate of said video image is 0～100.
4. the method that brightness of display screen self-adaptation as claimed in claim 1 is regulated is characterized by: be >=300ms the interval time that mean flow rate is read in the interval circulation described in the step c.
5. the method that brightness of display screen self-adaptation as claimed in claim 4 is regulated is characterized by: described interval time＞400ms.
6. the method for regulating like the described brightness of display screen self-adaptation of one of claim 1 to 5 is characterized by: the method that steps d is regulated video image brightness is:
D1. during the thresholding of mean flow rate＜details in a play not acted out on stage, but told through dialogues average brightness value, to maximum 3.3V, darkfield image brightness is increased the voltage-regulation of described back of the body lamp control pin;
D2. during the thresholding of moderate average brightness value >=mean flow rate >=details in a play not acted out on stage, but told through dialogues average brightness value, with the voltage-regulation of described back of the body lamp control pin to 2.8V;
D3. the thresholding of maximum brightness value/2 >=mean flow rate >=moderate average brightness value, with the voltage-regulation of described back of the body lamp control pin to 2V;
D4. thresholding >=the maximum brightness value of mean flow rate/2 to 1V, make brightness of image reduce to minimum the voltage-regulation of described back of the body lamp control pin.
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| CN201110416973XA CN102543036A (en) | 2011-12-14 | 2011-12-14 | Self-adaption adjusting method of display screen luminance |
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| CN201110416973XA CN102543036A (en) | 2011-12-14 | 2011-12-14 | Self-adaption adjusting method of display screen luminance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973855A (en) * | 2013-01-28 | 2014-08-06 | 深圳富泰宏精密工业有限公司 | Mobile phone backlight brightness fine adjustment system and method |
| CN105516824A (en) * | 2015-12-10 | 2016-04-20 | 小米科技有限责任公司 | Method and device for adjusting brightness of television screen |
| WO2017166507A1 (en) * | 2016-03-30 | 2017-10-05 | 乐视控股（北京）有限公司 | Energy efficiency control method and device for television and television |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201378416Y (en) * | 2009-02-23 | 2010-01-06 | 青岛海信电器股份有限公司 | Backlight control circuit and TV set provided with the same |
| CN101777310A (en) * | 2010-03-05 | 2010-07-14 | 青岛海信电器股份有限公司 | Dynamic backlight control method |
| WO2010092179A1 (en) * | 2009-02-16 | 2010-08-19 | Arcelik Anonim Sirketi | A display device and the control method thereof |
| CN101877208A (en) * | 2010-06-29 | 2010-11-03 | 彩虹集团公司 | Control method of LED backlight |
-
2011
- 2011-12-14 CN CN201110416973XA patent/CN102543036A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010092179A1 (en) * | 2009-02-16 | 2010-08-19 | Arcelik Anonim Sirketi | A display device and the control method thereof |
| CN201378416Y (en) * | 2009-02-23 | 2010-01-06 | 青岛海信电器股份有限公司 | Backlight control circuit and TV set provided with the same |
| CN101777310A (en) * | 2010-03-05 | 2010-07-14 | 青岛海信电器股份有限公司 | Dynamic backlight control method |
| CN101877208A (en) * | 2010-06-29 | 2010-11-03 | 彩虹集团公司 | Control method of LED backlight |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973855A (en) * | 2013-01-28 | 2014-08-06 | 深圳富泰宏精密工业有限公司 | Mobile phone backlight brightness fine adjustment system and method |
| CN103973855B (en) * | 2013-01-28 | 2018-02-23 | 深圳富泰宏精密工业有限公司 | Mobile phone backlight brightness micro-tensioning system and its method |
| CN105516824A (en) * | 2015-12-10 | 2016-04-20 | 小米科技有限责任公司 | Method and device for adjusting brightness of television screen |
| WO2017166507A1 (en) * | 2016-03-30 | 2017-10-05 | 乐视控股（北京）有限公司 | Energy efficiency control method and device for television and television |
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Application publication date: 20120704 |