CN102568438A - Self-adaptation brightness intelligent regulator for display device and realization method - Google Patents
Self-adaptation brightness intelligent regulator for display device and realization method Download PDFInfo
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Abstract
The invention belongs to the technical field of display device control, particularly relates to a self-adaptation brightness intelligent regulator for a display device and a realization method. The self-adaptation brightness intelligent regulator is formed by an embedded processor C1, a light sensor 2, a luminance signal screening circuit 1, a signal collecting circuit 3, a clock frequency generator 4, a clock circuit 5, a memorizer 6, a manual regulator C0 and the like, and the self-adaptation brightness intelligent regulator is connected with an interface circuit of the display device and an interface circuit of a driving circuit in the display device by the embedded processor C1, and is connected with a whole circuit system of an original display device, thus forming the whole circuit system of the display device with the self-adaptation intelligent regulating function. The defects in the prior art are well solved, namely the self-adaptation brightness intelligent regulator provided by the invention is added based on the processor structure in the display screen control circuit, and programs and data of the processor are rewritten and added, thus forming a new control circuit in an embedded processor mode, i.e., the self-adaptation brightness intelligent regulation of the display device can be effectively realized with a lower cost.
Description
Affiliated technical field
Display device control technology field under the present invention is specifically related to display device adaption brightness intelligent regulator and implementation method.
Technical background
At present; Most of display device such as computing machine, televisor does not all have the brightness regulation control system of adaptive environment light intensity, and the button of regulating display brightness supplies the end user to feel to regulate the brightness of demonstration by me, does not all remove to regulate display brightness according to the brightness of the environment for use of feeling earlier owing to people in actual the use can not start shooting at every turn; More can not follow the difference of displaying contents overall brightness and take to regulate the operation of brightness; This is not only because of troublesome poeration, and more is because there are not means to judge how much rational brightness is, and people's eyes have certain adaptability; Variation to light also can adapt to gradually, can produce erroneous judgement to intrinsic brilliance.So at present a lot of experts begin to appeal " will watch out for eyesight killer at one's side, use healthy brightness ".This is even more important for the display device, particularly teenager's generation and study, work and amusement popularized the day by day people in the environment of computer, TV that are everlasting.
Also walking crosswise at CRT monitor, televisor, when liquid crystal indicator is budding, using healthy brightness problem just by extensive discussions.In the time of 2005, one piece of article of German authoritative PC Magazine " Macwelt " is just pointed out, because the too high problem of LCD ubiquity brightness makes LCD be more prone to injure user's eyesight than traditional CRT monitor.
For this reason, also there are many experts and scholars to be engaged in big quantity research, proposed many solutions, but effect are all undesirable, have very big defective.For example: reference paper is that application number is the patent of invention of 200710063867.1 " the display terminal terminal lightens apparatus and method "; Its technical scheme is mainly: directly light activated element is converted into the ambient brightness sampled value and preset corresponding demonstration control voltage; Directly regulate display brightness automatically, and once sampled in every separated several seconds, pass to CPU then; CPU judges the corresponding control voltage of display brightness that sampled data is corresponding and implements control according to program setting.
Photosensor signal Acquisition Circuit and method that this technical scheme adopts; Do not distinguish the influence of display brightness to ambient brightness; The light intensity that can not reflect actual environment, and a few once sampling in second (or setting other times at interval) make sampling brightness have no related with the ambient brightness that will gather; The brightness of sampled signal reflection is the luminance signal after display brightness and the ambient brightness stack mostly; The amplitude of variation and the frequency of signal are relatively large, can produce the result who frequently regulates display brightness along with the time beat, make the unstable and power consumption more of display effect.This is because the light that shows; Variation with displaying contents changes; The light intensity signal that photosensitive acquired signal is adopted is shown by display screen to change the light intensity signal value that moment brightness influences; This light-sensing signal intensity randomness is very big, and does not represent real ambient light intensity value, so there is significant deficiency in the apparatus and method that lighten that this technical scheme adopts.
As can beappreciated from fig. 1; The brightness of general display screen is by the brightness of the people that use according to environment; Manual work is sent regulating command with button C0, and processor C1 converts steering order into, becomes the electric signal instruction by interface circuit again; Luminance processor makes that according to the electric signal instruction control backlight C4 or the RGB amplifying circuit C6 that regulate brightness the display screen display brightness is able to regulate.Hence one can see that, and manual shift device button C0 is regulates the publisher of brightness, and processor C1 is the organizer that brightness regulation is implemented, interface circuit C2 and brightness processed circuit C3 to display screen C5 be the executor.Just make display screen C5 can regulate suitable brightness, importantly, can convert appropriate control instruction and respective electrical parameter to through processor C1 according to the requirement of button C0.If realize control automatically; Intelligence is regulated; Must can accomplish the work of manually-operated manual adjustment device button C0 by a kind of mode by processor C1; Replace artificial button operation; This will know the brightness of environment, and can be by it is believed that rational brilliance control value issue regulating command.Key issue at first is exactly the perception of ambient brightness so; What those skilled in the art can expect is light activated element with bright sensor exactly; Pass to processor C1 with the ambient brightness collection and with electrical signal form; Processor C1 gathers brightness signal value according to this, finds out corresponding adjusting control electrical quantity and passes to interface circuit C2 and carry out to display screen C5 and get final product.In fact up to the present, everybody is difficult in and sees on the market that a desirable self-adaptation regulates the display screen of brightness, comprises televisor and other display device.Reason is that display its brightness when showing is merged in ambient brightness, and the light that display sends is that every minute all might change; If by the light sensor sample signal,, all can not get the intrinsic brilliance value of environment no matter be at a distance from several seconds or a few minutes; And gap can be very big; Also constantly change, in view of the above control just as manual work at frequent operation light modulation button, the regulating and controlling display brightness screen intensity will occur and shakes according to this; People seem just to have the phenomenon of screen sudden strain of a muscle, and are bigger to the eyesight injury.
Address the above problem, will reduce of the influence of display display brightness, realize hommization, the intelligent relation of handling sampled signal and display brightness, the technical scheme that the science that provides is feasible environment bright intensity sampling and judgement; For this reason, the present invention proposes display device adaption brightness intelligent regulator and implementation method.
Summary of the invention
As everyone knows, existing display device all has the display brightness regulating circuit, only regulates through the button of manual shift device.Realize that carrying out adaptive intelligent based on ambient brightness regulates display brightness automatically, at first will solve the identification problem of ambient brightness, the control parameter that also will solve corresponding display brightness is carried out the intelligent problem that generates in real time.The present invention is under the situation that does not influence original display device overall circuit structure; The defective of prior art scheme and the problem of above-mentioned discovery have been solved well through the mode of setting up adaption brightness intelligent regulator and corresponding control program; Promptly based on the processor structure in the display control circuit; Increase the adaption brightness intelligent regulator that the present invention realizes; And the program and the data of rewriting and increase processor, the new control circuit that forms the flush bonding processor form can be realized the adjusting of display device adaption brightness intelligence.
Display device adaption brightness intelligent regulator that the present invention proposes and implementation method are made up of flush bonding processor, bright sensor, luminance signal screening circuit, signal acquisition circuit, clock frequency maker, clock circuit, storer, manual shift device etc.; Link to each other with the interface circuit of display device through flush bonding processor; Insert original display device overall circuit system, constitute and have the display device overall circuit system that adaption brightness intelligence is regulated.
Luminance signal of the present invention screening circuit by microprocessor, storer, signal recognition circuit, regulate parameter generators, I/O port, period formation, frequency regulator, timer, counter and bus and form, and with external clock frequency maker, clock circuit is continuous and be connected shared former power supply unit.Its major function is exactly by setting period and frequency the ambient brightness sampled signal of luminance sensor and signal acquisition circuit transmission to be carried out identification,
Catch luminance signal minimum and mxm. and luminance signal contrast differences in the sampling period Value also generates minimum accordinglyBrightness signal value
The highestBrightness signal value
And luminance signal contrast difference the time Section formation 16 is at oneIn the display brightness regulating cycle, the period quantity that period formation 16 is provided with is according to sampling frequency and the time set set in each period,
OneThe display brightness regulating cycle is controlled between 3 minutes to 7 minutes.
Display device adaption brightness intelligent regulator of the present invention and implementation method are to regulate the sampling frequency and the time of bright sensor through signal acquisition circuit and frequency maker; Make the sampling time less than the compartment time between every frame of display frame; Make sampled signal can collect the ambient brightness signal after influenced by the display screen display brightness when display frame shows; More can collect between every frame influenced by the display screen display brightness after the ambient brightness signal; Screen the work that circuit 1 is accomplished identification and obtained the corresponding bright signal by luminance signal; When generating new real-time basic parameter and corresponding bright signal value data group, send it to flush bonding processor; Adopt intelligent priority policy and according to the preset brightness control parameter list by flush bonding processor, choose relevant parameter and convert the brightness regulation electrical quantity into and send to the adjusting that interface circuit is implemented corresponding display brightness; Make display device realize the adjusting of adaption brightness intelligence.
Display device adaption brightness intelligent regulator of the present invention and implementation method; Said luminance signal screening circuit is characterised in that the original intensity parameter of the ambient brightness when obtaining starting shooting of when each start, sampling; Send it to microprocessor and be stored in the reservoir; The difference of preserving the minimum brightness signal value chosen and maximum brightness signal value and minimum brightness signal value and maximum brightness signal value after original intensity parameter and the sampling in the storer at least promptly contrasts these three groups of luminance signal supplemental characteristics of difference with respect to the luminance signal of the demonstration contrast of display frame; Microprocessor sends to flush bonding processor with the original intensity parameter as the Benchmark brightness parameter of this start; By flush bonding processor according to the preset brightness control parameter list; Choose relevant parameter and convert that the brightness regulation electrical quantity sends to interface circuit into and by proceeding corresponding brightness adjustment control; The Benchmark brightness parameter is to pass judgment on the foundation that display brightness is regulated in the procedure for displaying of the extremely shutdown of once starting shooting; Have only and artificial think highly of newly when setting the display brightness parameter in real time through manual shift, the Benchmark brightness parameter is substituted by it, after the duration of work of all the other display device is only analyzed by luminance signal screening circuit real-time sampling; Substitute original Benchmark brightness parameter with new real-time basic parameter again when decision needs to regulate display brightness again; Flush bonding processor is received new real-time basic parameter and the corresponding bright signal value data group that luminance signal screening circuit sends, and relevant parameter and the algorithm at first protecting row and call the brightness regulation control parameter table that retains are in advance analyzed comparison, judges and controlled variable that generation need be carried out the display brightness adjusting.
In order to gather real ambient brightness signal; Display device adaption brightness intelligent regulator of the present invention and implementation method; The characteristic of said luminance signal screening circuit is to pass through frequency regulator, timer, counter by the time period of setting by microprocessor; Sampling frequency and time in each period are set; Minimum brightness signal value and maximum brightness signal value that the signal recognition circuit obtained in each period are stored in the period formation; Set in the period formation of quantity in this cycle by the microprocessor follow procedure; Analyse and compare parameter in the period formation is judged when meeting display brightness regulates the parameter request of setting the mean value of the maximum brightness signal values of all periods in the minimum brightness signal value in this cycle and maximum brightness signal value and the period formation given and is regulated the new real-time basic parameter of parameter generators generation and corresponding bright signal value data group and send to flush bonding processor through the I/O port.
In order to realize hommization; The intelligent relation of handling sampled signal and display brightness; Effective and reasonable carries out self adaptation real-time intelligent chemical control system automatically to display unit; Display unit adaption brightness intelligent regulator of the present invention and implementation method; The feature of said intelligent priority policy is to be determined as benchmark with start; Manual work in real time is set at elder generation; Process light transducing signal real-time tracking intelligence relatively; The brightness regulation control parameter table that retains in advance; The priority relationship table; Set the period quantity of sampling; Cycle changes boundary value with the permission that preestablishes minimum and the highest display brightness value and a reference value; Implement the overtime control of transfiniting; Regulate the time of the corresponding period of setting according to display brightness; Progressively smooth adjustment avoids frequent the adjusting screen phenomenon to occur dodging.
Display device adaption brightness intelligent regulator of the present invention and implementation method, simple, easily and effectively.Solved prior art and received display brightness to influence ambient brightness correctly to judge, thereby influenced the defective that display brightness is regulated control, realized that the self-adaptation display brightness intelligence of real meaning is regulated, for people provide safer, more healthy, the display device of environmental protection more.
Description of drawings
Fig. 1 is display device circuit structure theory diagram and functional sequence;
Fig. 2 is the display device circuit structure theory diagram with adaption brightness intelligent regulator;
Fig. 3 is luminance signal screening circuit function theory diagram.
Concrete real-time mode
As examples of implementation; With liquid crystal TV set common in the display device is background; The embodiment of display device adaption brightness intelligent regulator and implementation method is explained that still, technology of the present invention and scheme are not limited to the content that present embodiment provides in conjunction with accompanying drawing.
Fig. 1 is display device circuit structure theory diagram and functional sequence, can learn, the brightness regulation control of common display device is mainly undertaken by keying C0, processor C1, interface circuit C2, brightness processed C3, backlight drive C4 and LCDs C5 and accomplished.
Fig. 2 is the display device circuit structure theory diagram with adaption brightness intelligent regulator; Can know display device with adaption brightness intelligent regulator; The realization of its brightness regulation control mainly is made up of flush bonding processor C1, bright sensor 2, luminance signal screening circuit 1, signal acquisition circuit 3, clock frequency maker 4, clock circuit 5, storer 6, manual shift device C0 etc., links to each other with the interface circuit of display device through flush bonding processor C1; Completion is connected and fusion with original display device overall circuit system.
Fig. 3 is a luminance signal screening circuit function theory diagram; Described luminance signal screening circuit 1 by microprocessor 11, storer 12, signal recognition circuit 13, regulate parameter generators 14, I/O port one 5, period formation 16, frequency regulator 17, timer 18, counter 19 and bus 10 and form, and continuous with outer clock circuit 5 and be connected shared former power supply unit.Its major function is exactly by setting period and frequency luminance sensor 2 and the ambient brightness sampled signal that signal acquisition circuit 3 sends to be carried out identification,
Catch and adopt Luminance signal is minimum in the appearance periodValue
Also generate minimum accordingly with mxm. and luminance signal contrast difference Brightness signal value and the highestBrightness signal value
And the period formation 16 of luminance signal contrast difference, at oneIn the display brightness regulating cycle, the period quantity that period formation 16 is provided with very little, then the mutability of light modulation will be obvious; And the period quantity that is provided with will influence real-time too much; The period quantity that this example is provided with in the display brightness regulating cycle is 3; This is relevant with the time with interior setting sampling of each period frequency; The sampling frequency is set per second sampling 60 times to 270 times, the time, cost performance was high when a display brightness regulating cycle was controlled at 3 minutes to 7 minutes at 30 seconds to 180 seconds; Because; The persistence of vision of human eye is about 0.05～0.2 second, then can be kept several minutes by the strong persistence of vision that light stimulation caused, so this example is set to like sampling in per 1 minute 2 seconds; Per second sampling 160 times, just 3 minutes is a display brightness regulating cycle.
Display device adaption brightness intelligent regulator of the present invention and implementation method are to regulate the sampling frequency and the time of bright sensor 2 through signal acquisition circuit 3 and frequency maker 4; Make the sampling time less than the compartment time between every frame of display frame; Ambient brightness signal when making sampled signal can collect the display frame demonstration after the influence of display screen display brightness; More can collect the ambient brightness signal after the display screen display brightness influence between every frame; And the work of accomplishing identification and obtaining the corresponding bright signal by luminance signal screening circuit 1; When generating new real-time basic parameter and corresponding bright signal value data group, the luminance signal of obtaining is sent to flush bonding processor C1; Adopt intelligent priority policy and according to the preset brightness control parameter list by flush bonding processor C1, choose relevant parameter and convert the brightness regulation electrical quantity into and send to the adjusting that interface circuit C2 implements corresponding display brightness; Make display device realize the adjusting of adaption brightness intelligence.
Display device adaption brightness intelligent regulator of the present invention and implementation method; The characteristic of said luminance signal screening circuit 1 is the original intensity parameter of the ambient brightness when obtaining starting shooting of when each start, sampling; What collected this moment is the true environment luminance signal that influenced by the display display brightness; Send to processor 11 and be stored in the reservoir 12; The difference of preserving the minimum brightness signal value chosen and maximum brightness signal value and minimum brightness signal value and maximum brightness signal value after original intensity parameter and the sampling in the storer 12 at least promptly contrasts these three groups of luminance signal supplemental characteristics of difference with respect to the luminance signal of the demonstration contrast of display frame; Microprocessor 11 sends to flush bonding processor C1 with the original intensity parameter as the Benchmark brightness parameter of this start;, choose relevant parameter and convert the brightness regulation electrical quantity into and send this interface circuit C2 according to the preset brightness control parameter list by flush bonding processor C1, continue to carry out display brightness adjusting work by C2.The Benchmark brightness parameter is to pass judgment on the foundation that display brightness is regulated in the procedure for displaying of the extremely shutdown of once starting shooting; When having only manual work to reset the display brightness parameter through manual shift device C0; The Benchmark brightness parameter is substituted by it; After all the other display duration of works are only analyzed by screening circuit 1 real-time sampling; Substitute original Benchmark brightness parameter with real-time basic parameter again when display brightness is regulated in decision again; Flush bonding processor C1 receives new real-time basic parameter and the corresponding bright signal value data group that luminance signal screening circuit 1 sends, and at first preserves and calls the relevant parameter and the algorithm of the brightness regulation control parameter table that retains in advance and analyze comparison, and judgement and generation need be carried out the controlled variable that display brightness is regulated.
It is reported; The researchist of Macwelt points out; When display brightness reaches 100cd/m2, use LCD will cause visual fatigue, the doctor that electronics system of Peking University carries out electronic material research representes; Only if the distance of user and screen reaches more than 1 meter, otherwise the above brightness of 300cd/m2 will cause certain injury to user's vision.A rational brightness reaches human eye, generally at 100cd/m2 between the 160cd/m2, so just can see clear and comfortable literal or picture, and more healthy, more energy-conservation, more environmental protection.
Because the display brightness of display device normally drives treatment circuit through brightness of display screen and controls, generally can realize through prior aries such as voltage and dutycycles, do not describing in detail at this; But point out; The brightness signal value of display brightness and sampling has not little difference; Can not be equal to; The display brightness of display device is described with numerical value and cd/m2 unit in this example, and brightness signal value to be of display environment luma samples electric signal represent numeral, directly use numeric representation without unit.Therefore, this example is chosen to be the ceiling value of display brightness and is decided to be less than 210cd/m2 greater than 100cd/m2; According to intelligent priority policy; It is the difference of real-time basic parameter greater than the numerical value on year-on-year basis of basic parameter numerical value ± 10% and minimum brightness signal value and maximum brightness signal value that this example is regulated determination methods; Being luminance signal numerical value contrast difference is changing ± 15% when above; Regulate by real-time basic parameter, luminance signal contrast difference deficient change ± 15% o'clock wherein is by 1/2nd adjustings of real-time basic parameter with the difference of basic parameter; The adjusting judgement of parameter in the preset brightness control parameter list and setting and the numerical value that computing method draw not simultaneously, the numerical value that draws with the adjusting judgement set and computing method serves as preferential; When artificial setup parameter, control and accomplish 70% and one of the minimum brightness signal value of monitoring and intermediate value of maximum brightness signal value less than the maximum brightness limit value by flush bonding processor C1; Judging whether to carry out display brightness according to this regulates.
In order to gather real ambient brightness signal; Display device adaption brightness intelligent regulator of the present invention and implementation method; The characteristic of said luminance signal screening circuit 1 is to pass through frequency regulator 17, timer 18, counter 19 by the setting-up time section by microprocessor 11; Sampling frequency and time in each period are set; This example was set at: like sampling in per 1 minute 2 seconds; Per second sampling 160 times; Minimum brightness signal value and maximum brightness signal value that signal recognition circuit 13 obtained in each period are stored in the period formation; Set in the period formation of quantity in this cycle by microprocessor 11 follow procedures, the parameter in the period formation 16 of analysing and comparing is judged when meeting display brightness regulates the parameter request of setting the mean value of the maximum brightness signal values of all periods in the minimum brightness signal value in this cycle and maximum brightness signal value and the period formation 16 given and is regulated the new real-time basic parameter of parameter generators 14 generations and corresponding bright signal value data group and send to flush bonding processor C1 through I/O port one 5.
In order to realize hommization; The intelligent relation of handling sampled signal and display brightness; Effective and reasonable carries out self adaptation real-time intelligent chemical control system automatically to display unit; Display unit adaption brightness intelligent regulator of the present invention and implementation method; The feature of said intelligent priority policy is to be determined as benchmark with start; Manual work in real time is set at elder generation; Process light transducing signal real-time tracking intelligence relatively; The brightness regulation control parameter table that retains in advance; The priority relationship table; Set the period quantity of sampling; Cycle changes boundary value with the permission that preestablishes minimum and the highest display brightness value and a reference value; Implement the overtime control of transfiniting; Regulate the time of the corresponding period of setting according to display brightness; Progressively smooth adjustment avoids frequent the adjusting screen phenomenon to occur dodging.
By this embodiment, the applicating example of present technique scheme further specifies as follows:
As an example, adopt the display device such as the televisor of present technique scheme, when connecting with the mains start; Display frame is not also come out; Light sensor Direct Sampling, as the initial baseline parameter, this example assumes: obtaining the initial sampled brightness value is 67 with this; Send it to microprocessor 11 and be stored in the reservoir 12; Microprocessor 11 sends to flush bonding processor C1 with the original intensity parameter as the Benchmark brightness parameter of this start, and according to the preset brightness control parameter list, this routine relevant parameter is set to 107 by flush bonding processor C1; Choose relevant parameter and convert display brightness into and regulate electrical quantity, this example sends to interface circuit C2 and proceeds corresponding brightness adjustment control by C2 for 137cd/m2; Minimum three periods and the Senior Three period brightness signal value of the sampling of this display brightness regulating cycle are respectively 73,69,71 when showing back 2 minutes to 6 minutes, and 135,126,143; Luminance signal contrast difference maximal value is: 72; Because minimum brightness signal value 69＞67; But less than 110% * 67, this moment, the user did not reset parameter, and present display brightness expresses one's approval; And flush bonding processor C1 reads and obtain the maximum brightness signal value when analyzing correlation parameter all in limits, so do not need to regulate; If the dissatisfied display brightness of user's this moment uses the manual shift device that it is lightened, transfer the three periods monitoring brightness signal value of back monitoring to be respectively 83,81,86 and 149,136,151, then basic parameter changes 81 into.Suppose: do not use the manual adjustment device to be adjusted to prerequisite with the user; When start shows 30 minutes; The user has pulled on curtain; Room brilliancy reduces; At this moment measuring brightness signal value is respectively: 49; 51; 47 and 122; 119; 129; Basic parameter 67 greater than 110% * 47 when flush bonding processor C1 reads and analyzes relevant parameter; Judgement needs to regulate; Because the maximum brightness signal value is 129; It is 22 that room brilliancy is changed to 69-47 phase difference; Luminance signal contrast difference maximum is 82, not greater than 72 * 115%, illustrates that displaying contents and overall display luminance are reduced levels; The relevant parameter of flush bonding processor C1 preset brightness control parameter list; This routine relevant parameter is set to 87, is converted to display brightness and regulates electrical quantity, and this example is 117cd/m2; If the luminance signal that is provided with by this example contrasts difference deficient change ± 15% o'clock; Press 1/2nd methods of regulating of the difference of real-time basic parameter and basic parameter; Then press 1/2nd adjustings of the difference of real-time basic parameter and basic parameter; Be converted to display brightness and regulate electrical quantity, this example is 127cd/m2; According to intelligent priority policy; The parameter in preset brightness control parameter list and the adjusting judgement of setting and numerical value that computational methods draw are not simultaneously; The numerical value that draws with the adjusting judgement set and computational methods serve as preferential, so be that 129cd/m2 carries out brightness regulation also can reduce 4cd/m2 by per minute is adjusted to 129cd/m2 through 2 minutes display brightness by 137cd/m2 by display brightness adjusting electrical quantity.
Can know that so technical scheme of the present invention can be good at realizing the adaption brightness intelligence adjusting of display device.
Claims (7)
1. display device adaption brightness intelligent regulator and implementation method are made up of flush bonding processor C1, bright sensor 2, luminance signal screening circuit 1, signal acquisition circuit 3, clock frequency maker 4, clock circuit 5, storer 6, manual shift device C0 etc.; Link to each other with the interface circuit of display device through flush bonding processor C1; Insert original display device overall circuit system, constitute and have the display device overall circuit system that adaption brightness intelligence is regulated.
The said luminance signal of claim 1 screening circuit 1 by microprocessor 11, storer 12, signal recognition circuit 13, regulate parameter generators 14, I/O port one 5, period formation 16, frequency regulator 17, timer 18, counter 19 and bus 10 and form, and continuous with outer clock circuit 5 and be connected shared former power supply unit.
3. the method characteristic of the said luminance signal screening of claim 1 circuit 1 is by setting period and frequency luminance sensor 2 and the ambient brightness sampled signal that signal acquisition circuit 3 sends to be carried out identification; Catch luminance signal minimum and mxm. and luminance signal contrast difference in the sampling period and generate corresponding minimum brightness signal value and maximum brightness signal value and luminance signal contrast the period formation 16 of difference; In a display brightness regulating cycle, the period quantity that period formation 16 is provided with is according to sampling frequency and the time set set in each period.
4. display device adaption brightness intelligent regulator and implementation method are to regulate the sampling frequency and the time of bright sensor 2 through signal acquisition circuit 3 and frequency maker 4; Make the sampling time less than the compartment time between every frame of display frame; Screen the work that circuit 1 is accomplished identification and obtained the corresponding bright signal by luminance signal; When generating new real-time basic parameter and corresponding bright signal value data group, give flush bonding processor C1 with it; Adopt intelligent priority policy and according to the preset brightness control parameter list by flush bonding processor C1, choose relevant parameter and convert the brightness regulation electrical quantity into and send to the adjusting that interface circuit C2 implements corresponding display brightness.
5. display device adaption brightness intelligent regulator and implementation method; Said luminance signal screening circuit 1 is characterised in that the original intensity parameter of the ambient brightness when obtaining starting shooting of when each start, sampling; Send it to microprocessor 11 and be stored in the reservoir 12; The difference of preserving the minimum brightness signal value chosen and maximum brightness signal value and minimum brightness signal value and maximum brightness signal value after original intensity parameter and the sampling in the storer 12 at least promptly contrasts these three groups of luminance signal supplemental characteristics of difference with respect to the luminance signal of the demonstration contrast of display frame; Microprocessor 11 sends to flush bonding processor C1 with the original intensity parameter as the Benchmark brightness parameter of this start; By flush bonding processor C1 according to the preset brightness control parameter list; Choose relevant parameter and convert the brightness regulation electrical quantity into and send to interface circuit C2 and proceed corresponding brightness adjustment control by C2; The Benchmark brightness parameter is to pass judgment on the foundation that display brightness is regulated in the procedure for displaying of the extremely shutdown of once starting shooting; When having only manual work to set the display brightness parameter in real time again through manual shift device C0, the Benchmark brightness parameter is substituted by it, after the duration of work of all the other display device is only analyzed by luminance signal screening circuit 1 real-time sampling; Substitute original Benchmark brightness parameter with new real-time basic parameter again when decision needs to regulate display brightness again; Flush bonding processor C1 receives new real-time basic parameter and the corresponding bright signal value data group that luminance signal screening circuit 1 sends, and at first preserves and calls the relevant parameter and the algorithm of the brightness regulation control parameter table that retains in advance and analyze comparison, and judgement and generation need be carried out the controlled variable that display brightness is regulated.
6. display device adaption brightness intelligent regulator and implementation method; The characteristic of said luminance signal screening circuit 1 is to pass through frequency regulator 17, timer 18, counter 19 by the time period of setting by microprocessor 11; Sampling frequency and time in each period are set; Minimum brightness signal value and maximum brightness signal value that signal recognition circuit 13 obtained in each period are stored in the period formation; Set in the period formation of quantity in this cycle by microprocessor 11 follow procedures; Analyse and compare parameter in the period formation 16 is judged when meeting display brightness regulates the parameter request of setting the mean value of the maximum brightness signal values of all periods in the minimum brightness signal value in this cycle and maximum brightness signal value and the period formation 16 given and is regulated the new real-time basic parameter of parameter generators 14 generations and corresponding bright signal value data group and send to flush bonding processor C1 through I/O port one 5.
7. display device adaption brightness intelligent regulator and implementation method; The characteristic of said intelligent priority policy is to be determined as benchmark with start; Manual work in real time is set at elder generation, and process light transducing signal real-time follow-up intelligence compares, and the brightness regulation that retains is in advance controlled parameter table, priority relationship table, sets period quantity, the cycle of sampling and preestablished permission variation boundary value minimum and the highest display brightness value and reference value; Implement the overtime control of transfiniting; The time of the corresponding period that adjusting is set according to display brightness, progressively smooth adjustment avoids frequent the adjusting sudden strain of a muscle screen phenomenon to occur.
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| CN105185301A (en) * | 2015-08-12 | 2015-12-23 | 西安诺瓦电子科技有限公司 | Display screen brightness adjustment method |
| CN105702230A (en) * | 2016-04-14 | 2016-06-22 | 广东欧珀移动通信有限公司 | Method and device for adjusting backlight brightness of display screen of terminal and terminal |
| CN105959760A (en) * | 2016-04-27 | 2016-09-21 | 乐视控股（北京）有限公司 | Audio and video equipment adjusting method and device |
| CN106531124A (en) * | 2016-11-29 | 2017-03-22 | 田地 | Brightness automatic adjuster of computer display |
| WO2017185829A1 (en) * | 2016-04-28 | 2017-11-02 | 京东方科技集团股份有限公司 | Display |
| CN111210792A (en) * | 2020-02-11 | 2020-05-29 | 北京小米移动软件有限公司 | Method and device for determining ambient light brightness, terminal and storage medium |
| CN111261129A (en) * | 2020-03-23 | 2020-06-09 | 北京奇艺世纪科技有限公司 | Screen brightness control method and device, electronic equipment and storage medium |
| CN117496920A (en) * | 2023-12-27 | 2024-02-02 | 成都万创科技股份有限公司 | High-brightness multimedia display device based on HDBASE-T multi-input |
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Application publication date: 20120711 |