CN101859546A - Method for adjusting brightness of backlight source - Google Patents
Method for adjusting brightness of backlight source Download PDFInfo
- Publication number
- CN101859546A CN101859546A CN 201010188896 CN201010188896A CN101859546A CN 101859546 A CN101859546 A CN 101859546A CN 201010188896 CN201010188896 CN 201010188896 CN 201010188896 A CN201010188896 A CN 201010188896A CN 101859546 A CN101859546 A CN 101859546A
- Authority
- CN
- China
- Prior art keywords
- light source
- brightness
- external light
- value
- backlight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a method for adjusting the brightness of a backlight source. The method comprises the following steps of: detecting a current image signal to acquire a digital average brightness value of an image to be displayed and accordingly generate a brightness reaction stage number; entering a polling mode when the brightness of an external light source is truly changed and detecting external light source brightness repeatedly to generate a plurality of external light source brightness values; then, speculating a reasonable external light source brightness value and external light source change conditions according to the external light source brightness values and an original brightness value of the external light source; and adjusting the brightness of the backlight source according to the reasonable external light source brightness value, the external light source change conditions and the brightness reaction stage number.
Description
Technical field
The present invention is relevant for a kind of method of adjusting the brightness of backlight, refers to that especially a kind of brightness that shows according to environment light source and liquid crystal panel adjusts the method for the brightness of backlight automatically.
Background technology
Liquid crystal panel is non-luminiferous display device, need just have the function of display image with backlight.The brightness of liquid crystal panel is meant the bright degree of picture, and reasonably brightness can make our eyes more comfortable, also can not influence the color representation of picture simultaneously.In general, too high brightness causes the visual fatigue of user easily, and also can influence the color range of liquid crystal panel and the performance of GTG, and the brightness that liquid crystal panel shows is high more, and the color that just easier desalination solution crystal panel shows causes picture white partially.
For instance, the brightness that now a lot of liquid crystal panels show can reach 1000 lumens, 2000 lumens, and high more not the showing of brightness of liquid crystal panel demonstration is good more in fact.With regard to actual operating position, it is proper that the brightness that liquid crystal panel shows is adjusted at 50% of high-high brightness that backlight can export.The brightness that liquid crystal panel shows is too high, just might begin to influence the color representation of picture shown on the liquid crystal panel.
Therefore, industry member begins to develop and the technology that can automatically adjust back light source brightness according to background luminance.When the brightness of environment had change, liquid crystal panel can automatically be adjusted the brightness of backlight.So the user can not feel that the brightness of liquid crystal panel demonstration is too dark or too bright, but the brightness that feels comfortably cool.In addition, also can reach the function of power saving by the brightness of automatically adjusting backlight.
Yet prior art has many shortcomings.For example, excessively frequent variation of the brightness that liquid crystal panel shows, or the brightness that liquid crystal panel shows changes suddenly.No matter be the excessively frequent variation of the brightness that shows of liquid crystal panel or change suddenly, all can cause the user visual uncomfortable.
Summary of the invention
One embodiment of the invention disclose a kind of method of adjusting the brightness of backlight, comprise to detect a present image signal source, to obtain the digital averaging brightness value of picture to display; Produce a brightness stage of reaction number according to this digital averaging brightness value; Reach desired value and this brightness stage of reaction number, adjust the brightness of this backlight according to a backlight.
Another embodiment of the present invention discloses a kind of method of adjusting the brightness of backlight, comprises after the brightness that senses an external light source produces substantial variation, and the brightness that detects repeatedly this external light source is to produce a plurality of external light source brightness values; Brightness value when not producing substantial the variation as yet according to the brightness of these a plurality of external light source brightness values and this external light source is inferred rational external light source situation of change and light-source brightness value; And, decide the desired value of this backlight according to the external light source brightness value that of infer.
Another embodiment of the present invention discloses a kind of method of adjusting the brightness of backlight, comprises after brightness that a light source induction module senses an external light source produces substantial variation, detects this light source induction module and whether is in a trigger mode; If this light source induction module is in a trigger mode, send look-at-me to a controller; This controller notifies this light source induction module to cancel this trigger mode; This controller enters a poll pattern; When this controller was in this poll pattern, this light source induction module detected repeatedly the brightness of this external light source to produce a plurality of external light source brightness values; And the brightness value when not producing substantial variation as yet according to the brightness of this a plurality of external light source brightness values and this external light source, infer rational external light source brightness value and external light source changing condition.
Description of drawings
Fig. 1 is the synoptic diagram of explanation liquid crystal display systems;
Fig. 2 is the process flow diagram of the method for disclosed a kind of brightness of adjusting backlight in one embodiment of the invention;
Fig. 3 is the synoptic diagram of the relation of explanation digital averaging brightness value of picture and brightness stage of reaction number;
Fig. 4 is the process flow diagram of the method for disclosed a kind of brightness of adjusting backlight in the another embodiment of the present invention;
Fig. 5 is the synoptic diagram of the relation of explanation external light source changing pattern and light source input value;
Fig. 6 is the process flow diagram of the method for disclosed a kind of brightness of adjusting backlight in the another embodiment of the present invention;
Fig. 7 A and Fig. 7 B are the process flow diagram of the method for disclosed a kind of brightness of adjusting backlight in the another embodiment of the present invention;
Fig. 8 A and Fig. 8 B are the process flow diagram of the method for disclosed a kind of brightness of adjusting backlight in the another embodiment of the present invention.
Wherein, Reference numeral:
100 liquid crystal display systemss
102 light source induction modules
104 controllers
106 backlight control modules
108 human-machine interface modules
200-210,400-416,600-618,700-728,800-828 step
Embodiment
The invention relates to that a kind of brightness that shows by environment light source and liquid crystal panel adjusts the method for the brightness of backlight automatically.The present invention mainly adopts on liquid crystal display systems.Please refer to Fig. 1, Fig. 1 is the synoptic diagram of explanation liquid crystal display systems 100.Liquid crystal display systems 100 comprises a light source induction module 102, a controller 104, a backlight control module 106 and a human-machine interface module 108.Light source induction module 102 is coupled to controller 104, in order to the brightness of sensing external light source and transmit suitable light source input value to controller 104.Controller 104 is coupled to backlight control module 106 and human-machine interface module 108, in order to detect present image signal source, to obtain the digital averaging brightness value of picture to display; Digital averaging brightness value according to picture produces brightness stage of reaction number; The maximum that provides according to suitable light source input value and human-machine interface module 108 presents brightness value and the minimum setting that presents brightness value, with the desired value of decision backlight; Control backlight control module 106 is to adjust the brightness of backlight.Backlight control module 106 in order to the control signal that receives controller 104 to adjust the brightness of backlight.The maximum that human-machine interface module 108 is set backlight via the user presents brightness value and minimum presents brightness value.
Please refer to Fig. 2 and Fig. 3.Fig. 2 is the process flow diagram of the method for disclosed a kind of brightness of adjusting backlight in one embodiment of the invention, and Fig. 3 is the synoptic diagram of the relation of the digital averaging brightness value of explanation picture and brightness stage of reaction number.The method of Fig. 2 is by liquid crystal display systems shown in Figure 1 100 explanations, and details are as follows for its step:
Step 200: beginning;
Step 202: detect present picture signal, to obtain the digital averaging brightness value of picture to display;
Step 204: the digital averaging brightness value according to picture produces brightness stage of reaction number;
Step 206: present brightness value and minimum presents brightness value, the desired value of decision backlight according to the maximum of setting;
Step 208:, adjust the brightness of backlight according to the desired value and the brightness stage of reaction number of backlight;
Step 210: finish.
In the embodiment of Fig. 2, step 202, controller 104 detects present image signal source, to obtain the digital averaging brightness value of picture to display; Step 204, controller 104 produces brightness stage of reaction number according to the digital averaging brightness value of picture.In step 206, the maximum that the user then sets backlight by human-machine interface module 108 presents brightness value and minimum presents brightness value, for example the user's minimum that can set backlight presents brightness value and maximum presents brightness value, wherein minimum brightness value and the maximum high-high brightness of expression mode that presents brightness value of presenting for presenting with respect to backlight, for example the high-high brightness that can present with backlight is used as 100%, it is 40% (cold-cathode tube backlight) or 20% (back light source in LED) that minimum presents brightness value, but the present invention is not limited to this; The maximum brightness value that presents is then according to user's visual custom, usually between 50%-100%.
After the minimum of decision backlight presented brightness value and maximum and presents brightness value, then controller 104 can be by the desired value BLT of formula (1) decision backlight.
BLT＝min+60％*ES (1)
Wherein ES presents brightness value for the maximum that the user sets backlight, and min is that the minimum of backlight presents brightness value (for example: the cold-cathode tube backlight is 40%, and back light source in LED is 20%).For instance, it is 70% that the maximum that the user sets the cold-cathode tube backlight presents brightness value ES, then the desired value BLT=40%+60%*70%=82% of backlight.
In step 208, the desired value of the backlight that controller 104 obtains according to formula (1) and the brightness stage of reaction number that obtains in step 204, control backlight control module 106 is to adjust the brightness of backlight.In addition, controller 104 control backlight control modules 106 are the brightness of adjusting each luminescence unit in the backlight, or close and/or open the part luminescence unit of backlight with the pattern of the brightness of adjustment backlight.
In addition as shown in Figure 3, when the digital averaging brightness value of picture is bright more, brightness stage of reaction number is many more, that is to say, when the digital averaging brightness value of picture is bright more, the brightness of adjusting backlight needs more reaction time (brightness stage of reaction number is many more), with the rapid variation of the brightness of avoiding backlight, causes the visual discomfort of user.
Fig. 4 is the process flow diagram of the method for disclosed a kind of brightness of adjusting backlight in the another embodiment of the present invention.The method of Fig. 4 is by liquid crystal display systems shown in Figure 1 100 explanations, and details are as follows for its step:
Step 400: beginning;
Step 402: detect present picture signal, to obtain the digital averaging brightness value of picture to display;
Step 404: the digital averaging brightness value according to picture produces brightness stage of reaction number;
Step 406: the brightness that detects external light source is to obtain the original brightness value of external light source;
Step 408: after the brightness that senses external light source produced substantial variations, the brightness of continuous detecting external light source was to produce the external light source brightness value of at least three variations;
Step 410:, judge the changing condition of external light source, and determine suitable light source input value LS according to the original brightness value of the external light source brightness value and the external light source of three variations;
Step 412: according to light source input value LS, the desired value of decision backlight;
Step 414:, adjust the brightness of backlight according to the desired value and the brightness stage of reaction number of backlight;
Step 416: finish.
In the embodiment of Fig. 4, step 402, step 404 and step 202, step 204 are identical, do not repeat them here.In step 406, light source induction module 102 detects the brightness of external light source to obtain the original brightness value of external light source.In step 408, after brightness that light source induction module 102 senses external light source produced the variation of essence, the brightness of continuous detecting external light source was to produce external light source brightness value L ux1, Lux2 and the Lux3 of at least three variations.In step 410, light source induction module 102 utilizes external light source brightness value L ux1, the Lux2 of three variations and the original brightness value LS0 of Lux3 and external light source (for example Shang Yici light source input value), judge the changing condition of external light source then according to the external light source changing pattern of Fig. 5, to determine suitable light source input value LS.For example, external light source brightness value L ux1, Lux2 and the Lux3 of the original brightness value LS0 of external light source and three variations present ascendant trend, that is to say LS0＜Lux1＜Lux2＜Lux3, then light source input value LS are made as Lux3.In addition,, that is to say LS0＞Lux1＞Lux2＞Lux3, then light source input value LS is made as Lux3 if external light source brightness value L ux1, Lux2 and the Lux3 of the original brightness value LS0 of external light source and three variations present downtrending.If external light source brightness value L ux1, Lux2 and the Lux3 of the original brightness value LS0 of external light source and three variations present irregular alteration trend, then light source input value LS is made as (Lux1+Lux2+Lux3)/3.
In step 412, behind the suitable light source input value LS of decision, then controller 104 can be by the desired value BLT of formula (2) decision backlight.
BLT＝min+60％*LS (2)
Wherein min is that the minimum of backlight presents brightness value (for example: the cold-cathode tube backlight is 40%, and back light source in LED is 20%).For instance, when suitable light source input value LS be 70% and backlight when being cold-cathode tube, then the desired value BLT=40%+60%*70%=82% of backlight.
In step 414, the desired value of the backlight that controller 104 obtains according to formula (2) and the brightness stage of reaction number that obtains in step 404, control backlight control module 106 is to adjust the brightness of backlight.In addition, controller 104 control backlight control modules 106 are with the pattern of the brightness of adjustment backlight, and are identical with the embodiment of Fig. 2, do not repeat them here.
Fig. 6 is the process flow diagram of the method for disclosed a kind of brightness of adjusting backlight in the another embodiment of the present invention.The method of Fig. 6 is by liquid crystal display systems shown in Figure 1 100 explanations, and details are as follows for its step:
Step 600: beginning;
Step 602: detect present picture signal, to obtain the digital averaging brightness value of picture to display;
Step 604: the digital averaging brightness value according to picture produces brightness stage of reaction number;
Step 606: the brightness that detects external light source is to produce the original brightness value of external light source;
Step 608: after the brightness that senses external light source produced substantial variations, the brightness of continuous detecting external light source was to produce the external light source brightness value of at least three variations;
Step 610:, judge the changing condition of external light source, and determine suitable light source input value LS according to the original brightness value of three external light source brightness values and external light source;
Step 612: provide predetermined maximum to present brightness value and minimum presents brightness value;
Step 614: according to light source input value LS and predetermined maximum presents brightness value and minimum presents brightness value, the desired value of decision backlight;
Step 616:, adjust the brightness of backlight according to the desired value and the brightness stage of reaction number of backlight;
Step 618: finish.
The embodiment difference of the embodiment of Fig. 6 and Fig. 4 is in the step 610, controller 104 is to present brightness value and the minimum setting substitution formula (3) that presents brightness value via the maximum that light source input value LS and human-machine interface module 108 provide, decide the desired value of backlight, the embodiment of all the other steps and Fig. 4 is identical, does not repeat them here.
BLT＝min+60％*ES*LS (3)
Wherein ES presents brightness value (maximum that human-machine interface module 108 provides presents brightness value) for the maximum that the user sets backlight, min is that the minimum of backlight presents brightness value (for example: the cold-cathode tube backlight is 40%, and back light source in LED is 20%).For instance, it is 70% that the maximum that the user sets the cold-cathode tube backlight presents brightness value ES, if suitable light source input value LS is 80% o'clock, and the desired value BLT=40%+60%*70%*80%=73.6% of backlight then.
Fig. 7 A and Fig. 7 B are the process flow diagram of the method for disclosed a kind of brightness of adjusting backlight in the another embodiment of the present invention.The method of Fig. 7 A and Fig. 7 B is by liquid crystal display systems shown in Figure 1 100 explanations, and details are as follows for its step:
Step 700: beginning;
Step 702: detect present picture signal, to obtain the digital averaging brightness value of picture to display;
Step 704: the digital averaging brightness value according to picture produces brightness stage of reaction number;
Step 706: the brightness that detects external light source is to obtain the original brightness value of external light source;
Step 708: after the brightness that senses external light source produces substantial variations, detect whether be in trigger mode, if carry out step 710; If not, skip to step 728;
Step 710: send look-at-me;
Step 712: cancellation trigger mode;
Step 714: enter the external light source poll pattern;
Step 716: when being in the external light source poll pattern, the brightness of beginning continuous detecting external light source is to produce the external light source brightness value of at least three variations;
Step 718:, judge whether the changing condition of external light source is fixing, if carry out step 720 according to the original brightness value of the external light source brightness value and the external light source of three variations; If not, skip to step 722;
Step 720: enter trigger mode, skip to step 728;
Step 722: the original brightness value according to the external light source brightness value and the external light source of three variations determines suitable light source input value LS;
Step 724: according to light source input value LS, the desired value of decision backlight;
Step 726:, adjust the brightness of backlight according to the desired value and the brightness stage of reaction number of backlight;
Step 728: finish.
The embodiment difference of the embodiment of Fig. 7 A and Fig. 7 B and Fig. 4 is among the embodiment of Fig. 4, after brightness that light source induction module 102 senses external light source produces substantial variation, the brightness that detects three external light sources at once is to produce three external light source brightness values, and the brightness value when not producing substantial the variation as yet according to the brightness of three external light source brightness values and external light source, judge the changing condition of external light source, and determine suitable light source input value LS.And in the embodiment of Fig. 7 A and Fig. 7 B, whether controller 104 can be in trigger mode by first detection light source induction module 102, determines that light source induction module 102 is to be under the trigger mode, and controller 104 just can enter the external light source poll pattern.When controller 104 was in the external light source poll pattern, light source induction module 102 just began to detect the brightness of three external light sources to produce three external light source brightness values; Next except when outside the changing condition of external light source carry out step 718 for fixedly the time, all the other follow-up steps just followed the embodiment of Fig. 4 identical, do not repeat them here.
Fig. 8 A and Fig. 8 B are the process flow diagram of the method for disclosed a kind of brightness of adjusting backlight in the another embodiment of the present invention.The method of Fig. 8 A and Fig. 8 B is by liquid crystal display systems shown in Figure 1 100 explanations, and details are as follows for its step:
Step 800: beginning;
Step 802: detect present picture signal, to obtain the digital averaging brightness value of picture to display;
Step 804: the digital averaging brightness value according to picture produces brightness stage of reaction number;
Step 806: the brightness that detects external light source is to produce the original brightness value of external light source;
Step 808: after the brightness that senses external light source produces substantial variations, detect whether be in trigger mode, if carry out step 810; If not, skip to step 828;
Step 810: send look-at-me;
Step 812: cancellation trigger mode;
Step 814: enter the external light source poll pattern;
Step 816: when being in the external light source poll pattern, the brightness of beginning continuous detecting external light source is to produce the external light source brightness value of at least three variations;
Step 818:, judge whether the changing condition of external light source is fixing, if carry out step 820 according to the original brightness value of three external light source brightness values and external light source; If not, skip to step 822;
Step 820: enter trigger mode, skip to step 828;
Step 822: the original brightness value according to the external light source brightness value and the external light source of three variations determines suitable light source input value LS;
Step 824: according to light source input value LS, and predetermined maximum presents brightness value with minimum presents brightness value, determines the desired value of backlight;
Step 826:, adjust the brightness of backlight according to the desired value and the brightness stage of reaction number of backlight;
Step 828: finish.
The embodiment difference of the embodiment of Fig. 8 A and Fig. 8 B and Fig. 7 A and Fig. 7 B is in the step 822, controller 104 is to present brightness value and the minimum setting substitution formula (3) that presents brightness value via the maximum that light source input value LS and human-machine interface module 108 provide, decide the desired value of backlight, all the other steps are identical with the embodiment of Fig. 7 B with Fig. 7 A, do not repeat them here.
Comprehensive the above, prior art has many shortcomings.For example, excessively frequent variation of the brightness that liquid crystal panel shows, or the brightness that liquid crystal panel shows changes suddenly.The method of the brightness of adjustment backlight disclosed in this invention then is that controller 104 produces brightness stage of reaction number according to the digital averaging brightness value of picture earlier, and after brightness that light source induction module 102 senses external light source produces substantial variation, by controller 104 poll light source induction modules 102, and light source induction module 102 begins to detect repeatedly the brightness of external light source, to judge the changing pattern of external light source, last controller 104 is according to the desired value and the brightness stage of reaction number of backlight, and control backlight control module 106 is to adjust the brightness of backlight.So, the present invention can overcome in the prior art, excessively frequent variation of the brightness that liquid crystal panel shows, or the shortcoming that changes suddenly of the brightness that shows of liquid crystal panel.
The above only is preferred embodiment of the present invention, and all equalizations of making according to claim of the present invention change and revise, and all should belong to covering scope of the present invention.
Claims (23)
1. a method of adjusting the brightness of backlight is characterized in that, comprises:
Detect a present picture signal, to obtain the digital averaging brightness value of picture to display;
Produce a brightness stage of reaction number according to this digital averaging brightness value; And
According to desired value and this brightness stage of reaction number of a backlight, adjust the brightness of this backlight.
2. the method for claim 1 is characterized in that, the brightness of adjusting this backlight comprises the brightness of each luminescence unit of adjusting this backlight.
3. the method for claim 1 is characterized in that, the brightness of adjusting this backlight comprises the part luminescence unit of closing and/or open this backlight.
4. the method for claim 1 is characterized in that, also comprises the maximum of setting this backlight and presents brightness value.
5. method as claimed in claim 4 is characterized in that, comprises also that maximum according to this backlight presents brightness value and a minimum presents brightness value, produces the desired value of this backlight.
6. the method for claim 1 is characterized in that, other comprises:
After the brightness that senses an external light source produced substantial variations, the brightness that detects repeatedly this external light source was to produce a plurality of external light source brightness values; And
According to an original brightness value of these a plurality of external light source brightness values and this external light source, judge the changing condition of this external light source.
7. method as claimed in claim 6 is characterized in that, the step of the changing condition of above-mentioned this external light source of judgement also comprises generation one light source input value.
8. method as claimed in claim 7, it is characterized in that, this original brightness value according to these a plurality of external light source brightness values and this external light source, produce that this light source input value comprises if this original brightness value of this external light source and this a plurality of external light source brightness values present rising or downtrending, the external light source brightness value that records at last in then will these a plurality of external light source brightness values is made as this light source input value.
9. method as claimed in claim 7, it is characterized in that, this original brightness value according to these a plurality of external light source brightness values and this external light source, produce that this light source input value comprises if this original brightness value of this external light source and these a plurality of external light source brightness values present irregular alteration trend, mean value that then will these a plurality of external light source brightness values is made as this light source input value.
10. method as claimed in claim 7 is characterized in that, other comprises according to this a light source input value and a minimum and presents brightness value, produces the desired value of this backlight.
11. method as claimed in claim 7 is characterized in that, other comprises:
A maximum of setting this backlight presents brightness value and a minimum presents brightness value; And
Maximum according to this backlight presents brightness value, this minimum presents brightness value and this light source input value, produces the desired value of this backlight.
12. the method for claim 1 is characterized in that, other comprises:
Sense the brightness generation substantial variations of an external light source when a light source induction module after, detect this light source induction module and whether be in a trigger mode;
If this light source induction module is in a trigger mode, send look-at-me to a controller;
This controller notifies this light source induction module to cancel this trigger mode;
This controller enters a poll pattern;
When this controller was in this poll pattern, the brightness of this this external light source of light source induction module continuous detecting was to produce a plurality of external light source brightness values; And
According to this original brightness value of these a plurality of external light source brightness values and this external light source, judge the changing condition of this external light source.
13. method as claimed in claim 12 is characterized in that, also comprises:
If the changing condition of this external light source is for fixedly the time, this controller notifies this light source induction module to enter this trigger mode.
14. method as claimed in claim 12 is characterized in that, also comprises:
The step of the changing condition of wherein above-mentioned this external light source of judgement also comprises generation one light source input value.
15. method as claimed in claim 14, it is characterized in that, this original brightness value according to these a plurality of external light source brightness values and this external light source, produce that this light source input value comprises if brightness value and this a plurality of external light source brightness values when the brightness of this external light source does not produce substantial the variation as yet present rising or downtrending, the external light source brightness value that records at last in then will these a plurality of external light source brightness values is made as this light source input value.
16. method as claimed in claim 14, it is characterized in that, original brightness value according to these a plurality of external light source brightness values and this external light source, produce that this light source input value comprises if brightness value and these a plurality of external light source brightness values when the brightness of this external light source does not produce substantial the variation as yet present irregular alteration trend, mean value that then will these a plurality of external light source brightness values is made as this light source input value.
17. method as claimed in claim 14 is characterized in that, also comprises according to this a light source input value and a minimum and presents brightness value, produces the desired value of this backlight.
18. method as claimed in claim 14 is characterized in that, also comprises:
The maximum of setting this backlight presents brightness value; And
Present brightness value, this light source input value and a minimum according to the maximum of this backlight and present brightness value, produce the desired value of this backlight.
19. a method of adjusting the brightness of backlight is characterized in that, comprises:
After brightness that a light source induction module senses an external light source produces substantial variation, detect this light source induction module and whether be in a trigger mode;
If this light source induction module is in a trigger mode, send look-at-me to a controller;
This controller notifies this light source induction module to cancel this trigger mode;
This controller enters a poll pattern;
When this controller was in this poll pattern, this light source induction module detected repeatedly the brightness of this external light source to produce a plurality of external light source brightness values;
Brightness value when not producing substantial the variation as yet according to the brightness of these a plurality of external light source brightness values and this external light source is judged the changing condition of this external light source;
If this external light source does not have substantial variation, this controller notifies this light source induction module to enter this trigger mode; And
If this external light source has substantial variation, the brightness value when then the brightness of these a plurality of external light source brightness values of basis and this external light source does not produce substantial the variation as yet produces a light source input value.
20. method as claimed in claim 19, it is characterized in that, brightness value when not producing substantial the variation as yet according to the brightness of these a plurality of external light source brightness values and this external light source, produce that this light source input value comprises if brightness value and this a plurality of external light source brightness values when the brightness of this external light source does not produce substantial the variation as yet present rising or downtrending, the external light source brightness value that records at last in then will these a plurality of external light source brightness values is made as this light source input value.
21. method as claimed in claim 19, it is characterized in that, brightness value when not producing substantial the variation as yet according to the brightness of these a plurality of external light source brightness values and this external light source, produce that this light source input value comprises if brightness value and these a plurality of external light source brightness values when the brightness of this external light source does not produce substantial the variation as yet present irregular alteration trend, mean value that then will these a plurality of external light source brightness values is made as this light source input value.
22. method as claimed in claim 19 is characterized in that, also comprises according to this a light source input value and a minimum and presents brightness value, produces the desired value of this backlight.
23. method as claimed in claim 19 is characterized in that, also comprises:
The maximum of setting this backlight presents brightness value; And
Present brightness value, this light source input value and a minimum according to the maximum of this backlight and present brightness value, produce the desired value of this backlight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010188896 CN101859546B (en) | 2010-05-25 | 2010-05-25 | Method for adjusting brightness of backlight source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010188896 CN101859546B (en) | 2010-05-25 | 2010-05-25 | Method for adjusting brightness of backlight source |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310186345.6A Division CN103377636B (en) | 2010-05-25 | 2010-05-25 | Method for regulating back light brightness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101859546A true CN101859546A (en) | 2010-10-13 |
| CN101859546B CN101859546B (en) | 2013-06-19 |
Family
ID=42945405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010188896 Active CN101859546B (en) | 2010-05-25 | 2010-05-25 | Method for adjusting brightness of backlight source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101859546B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102402942A (en) * | 2011-11-02 | 2012-04-04 | 深圳创维－Rgb电子有限公司 | Method for improving energy efficiency index of LED (light-emitting diode) display screen and LED display screen |
| CN103050097A (en) * | 2013-01-21 | 2013-04-17 | 北京小米科技有限责任公司 | Method and device for regulating brightness of backlight lamp |
| CN104795054A (en) * | 2015-05-13 | 2015-07-22 | 上海斐讯数据通信技术有限公司 | System and method for adjusting brightness automatically |
| CN105869603A (en) * | 2015-09-22 | 2016-08-17 | 乐视致新电子科技（天津）有限公司 | Screen brightness regulation method and device |
| CN107799093A (en) * | 2017-12-08 | 2018-03-13 | 深圳市金立通信设备有限公司 | Adjust method, terminal and the computer-readable recording medium of screen luminance of terminal |
| CN110223659A (en) * | 2019-07-18 | 2019-09-10 | 福建晶彩光电科技股份有限公司 | It is a kind of for control include pixel active matrix display screen brightness method |
| WO2021143248A1 (en) * | 2020-01-14 | 2021-07-22 | 华为技术有限公司 | Backlight adjustment method and electronic device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005029454A1 (en) * | 2003-09-24 | 2005-03-31 | Koninklijke Philips Electronics N.V. | Method and system for controlling an illuminating apparatus |
| CN1996458A (en) * | 2006-01-08 | 2007-07-11 | 吴健 | Intelligent dimming system for liquid crystal device |
| CN201122422Y (en) * | 2007-12-05 | 2008-09-24 | 群康科技(深圳)有限公司 | LCD device |
| CN101404144A (en) * | 2008-11-10 | 2009-04-08 | 友达光电（苏州）有限公司 | Electronic device with automatic brightness adjustment function |
| JP2009086133A (en) * | 2007-09-28 | 2009-04-23 | Sharp Corp | Video display apparatus |
-
2010
- 2010-05-25 CN CN 201010188896 patent/CN101859546B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005029454A1 (en) * | 2003-09-24 | 2005-03-31 | Koninklijke Philips Electronics N.V. | Method and system for controlling an illuminating apparatus |
| CN1996458A (en) * | 2006-01-08 | 2007-07-11 | 吴健 | Intelligent dimming system for liquid crystal device |
| JP2009086133A (en) * | 2007-09-28 | 2009-04-23 | Sharp Corp | Video display apparatus |
| CN201122422Y (en) * | 2007-12-05 | 2008-09-24 | 群康科技(深圳)有限公司 | LCD device |
| CN101404144A (en) * | 2008-11-10 | 2009-04-08 | 友达光电（苏州）有限公司 | Electronic device with automatic brightness adjustment function |
| US20100117946A1 (en) * | 2008-11-10 | 2010-05-13 | Au Optronics (Suzhou) Corp. | Brightness adjustable electrical apparatus |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102402942A (en) * | 2011-11-02 | 2012-04-04 | 深圳创维－Rgb电子有限公司 | Method for improving energy efficiency index of LED (light-emitting diode) display screen and LED display screen |
| CN102402942B (en) * | 2011-11-02 | 2014-05-28 | 深圳创维－Rgb电子有限公司 | Method for improving energy efficiency index of LED (light-emitting diode) display screen and LED display screen |
| CN103050097A (en) * | 2013-01-21 | 2013-04-17 | 北京小米科技有限责任公司 | Method and device for regulating brightness of backlight lamp |
| CN104795054A (en) * | 2015-05-13 | 2015-07-22 | 上海斐讯数据通信技术有限公司 | System and method for adjusting brightness automatically |
| CN105869603A (en) * | 2015-09-22 | 2016-08-17 | 乐视致新电子科技（天津）有限公司 | Screen brightness regulation method and device |
| CN107799093A (en) * | 2017-12-08 | 2018-03-13 | 深圳市金立通信设备有限公司 | Adjust method, terminal and the computer-readable recording medium of screen luminance of terminal |
| CN110223659A (en) * | 2019-07-18 | 2019-09-10 | 福建晶彩光电科技股份有限公司 | It is a kind of for control include pixel active matrix display screen brightness method |
| WO2021143248A1 (en) * | 2020-01-14 | 2021-07-22 | 华为技术有限公司 | Backlight adjustment method and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101859546B (en) | 2013-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101859546B (en) | Method for adjusting brightness of backlight source | |
| CN103077684B (en) | A kind of backlight adjusting method, device and display screen | |
| CN102770798B (en) | Image display light emission device and image display device | |
| CN101645231B (en) | Method and device for regulating back light brightness of display | |
| CN101299807A (en) | Display device capable of automatically regulating display parameter as well as implementation method thereof | |
| CN101211538A (en) | Backlight brightness regulating method | |
| CN102196641A (en) | Automatic dimming garden lamp | |
| CN105511765A (en) | Screen brightness adjusting method, device and electronic equipment | |
| CN101436385A (en) | Mechanism for saving power supply of display and control method thereof | |
| CN101917800A (en) | LED controller | |
| CN201904071U (en) | Separated display apparatus brightness adjusting device based on environmental light | |
| CN103377636B (en) | Method for regulating back light brightness | |
| CN105810156A (en) | Backlight adjustment method and circuit | |
| CN105636265B (en) | A kind of New LED classroom lamp | |
| CN106376123A (en) | Controllable intelligent driving power with multiple color temperatures | |
| CN102800277A (en) | Method for adjusting color and luminance of display equipment and display device | |
| CN202373274U (en) | Display panel capable of changing back light | |
| CN101354869A (en) | Device and method for automatically adjusting display lighteness according to input signal | |
| CN103281546B (en) | Be applied to the control system of touch-control and changeable 2D/3D pattern | |
| CN202093761U (en) | Intelligent liquid crystal digital photo frame | |
| CN204965388U (en) | Infrared touch display | |
| TWI413091B (en) | Method of adjusting luminance of a backlight source | |
| CN211321551U (en) | LED light stroboscopic and stepless brightness-adjusting system | |
| CN101710483A (en) | Display adjusting brightness according to display distance | |
| CN101630494B (en) | Method for improving dynamic contrast ratio of liquid crystal display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |