CN108345439A - A kind of active anti-blu-ray system and method for calculating display screen blue light cumlative energy - Google Patents
A kind of active anti-blu-ray system and method for calculating display screen blue light cumlative energy Download PDFInfo
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Abstract
The present invention relates to a kind of active anti-blu-ray systems for calculating display screen blue light cumlative energy,When display screen receives and shows the image information content that image processing unit sequentially transmits,Open actively anti-blue light functional select switch,The multiple sampling in one section of sample time is carried out to the display picture of display screen by system interface thoroughly,And it stores to internal storage location,Operation processing unit respectively shows that picture carries out analyzing and referring to display screen blue light emitting energy response database to the display screen in internal storage location,Calculate the blue light energy size of every sub-sampling display screen in each section of sample time and corresponding accumulation blue light gross energy,When blue light gross energy judging unit judges that the blue light gross energy of accumulation is less than setting value,It then continues cycling through sampling and calculates the blue light energy size of display screen and corresponding accumulation blue light gross energy,When reaching or more than setting value,Alarm unit is sent out according to alarm settings for reminding the information warning suitably rested or opening anti-blue light function to reduce blue light injury.
Description
Technical field
The present invention relates to the anti-Blue-Ray technology fields of display screen, more particularly to a kind of active calculating display screen blue light to accumulate energy
The anti-blu-ray system and method for amount.
Background technology
With increasingly popularizing for 3C Product, either amusement, audio-visual, game or the applications such as read, all rapidly
Daily life has been incorporated, however, while these 3C Products provide convenience, but also vision health is brought sternly
The negative threat risk of weight.
The running gears such as smartphone and tablet are found according to research, because of closely operation and for a long time original of direct-view
Cause, harmful blue light energy accumulation and chronic stimulation gently can then cause eye fatigue uncomfortable, can even cause eyeball yellow when serious
The risk that pinta becomes can also influence the secretion of the hormonal melatonin of human endocrine, reduce immune system protection, damage carefully
The injury of born of the same parents is possible, is the great stealthy killer for endangering vision health.
Common existing anti-Blue-Ray technology explanation, the most common mode of hardware is filter (anti-) blue light piece method, and the practice is in display screen
On, additional to attach one layer of filter (anti-) blue light film, specific blue light wavelength deep energy blue light below can be filtered, be made by film
Human eye is obtained in ornamental display screen, does not have too many blue light energy injury, only this mode greatest problem is exactly forevermore will
Display screen blue light ingredient reduce, so screen color will partially yellow it is inclined, realistic colour cannot be presented, simultaneously as in display screen
On, it is more to have attached filter (anti-) blue light film reason, so also having additional cost pays disadvantage, while display screen
Brightness also have a degree of decline and influence.
Common existing anti-Blue-Ray technology explanation, the most common mode of software exactly adjust the colouring intensity (color of screen display
Temperature), the intensity of screen color blue light ingredient is reduced, benefit is the blue light strength (grayscale) because software mode is set
Adjustment be the setting of different proportion can be done according to desirability, if but adjust blue light intensity (grayscale) when, this mode
The inclined yellow of screen color can be brought inclined, therefore in order to make the realistic colour of display screen present, colour cast will not be too apparent, generally may be used
Allow under different-colour setting demand, for different degrees of red green light proportional compensation so that colour cast influence can obtain certain
Degree improves.
In conclusion existing anti-Blue-Ray technology, is all the blue light energy mode (note of passive reduction screen：It is more to show
Color purpose, screen blue light energy can not possibly completely remove), not only there are problems that cost and colour cast, and even so, user is also
It is that not can know that the blue light energy size accumulated is how many, if needs eyes more for a long time and under different pictures use
Rest still needs to reinforce the protection of anti-blue light application.The maximum characteristic of the technology of the present invention, is to the spy according to display screen
Property and the characteristics such as the picture variation of user's operation, brightness size, time length, go to calculate the blue light energy journey that display screen is accumulated
Degree, active warning user's eyeshield prompt are rested or are opened other and anti-blue light application, progress is assisted to help user by blue light
Injury is preferably minimized.
Invention content
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of reasonable design, blue light can be effectively reduced
The anti-blu-ray system and method for the active calculating display screen blue light cumlative energy of injury.
To achieve the above object, the present invention uses following technical scheme：
A kind of active anti-blu-ray system for calculating display screen blue light cumlative energy comprising actively anti-blue light function selection
It switchs, thoroughly by system interface, internal storage location, operation processing unit, blue light gross energy judging unit and alarm unit；
When display screen receives and show the image information content that image processing unit sequentially transmits, actively anti-blue light work(is opened
Energy selecting switch carries out the multiple sampling in one section of sample time to the display picture of display screen by system interface thoroughly, and stores
To internal storage location, operation processing unit respectively shows that picture analyze and with reference to display screen indigo plant to the display screen in internal storage location
Light luminous energy property database calculates the blue light energy size and correspondence of every sub-sampling display screen in each section of sample time
Blue light gross energy is accumulated, when blue light gross energy judging unit judges that the blue light gross energy of accumulation is less than setting value, is then continued
The blue light energy size of cycle sampling and calculating display screen and corresponding accumulation blue light gross energy, when blue light gross energy judging unit is sentenced
When the blue light gross energy of disconnected accumulation reaches or is more than setting value, alarm unit is sent out according to alarm settings for reminding appropriate rest
Information warning or open anti-blue light function to reduce blue light injury.
A kind of anti-blue light method of the active anti-blu-ray system for calculating display screen blue light cumlative energy comprising following step
Suddenly：
1) when display screen receives and show the image information content that image processing unit sequentially transmits, if actively anti-blue light work(
Energy selecting switch is closed, then anti-blu-ray system does not work, if actively anti-blue light functional select switch is opened, is thened follow the steps
2)；
2) the display picture of display screen is sampled by system interface thoroughly：Within one section of sample time, at interval of the time
Δ t carries out primary sample by system interface to the display picture of display screen thoroughly, and sampling number is denoted as i, sample time ti, take
Sample shows that picture is Si, it is m and multiple pictures that horizontal number of sampling is n that each sampling, which shows that picture all obtains vertical sampling and counts,
Vegetarian refreshments matrix image information, image information include the screen intensity of each pixel points and blue grayscale value, wherein i, m and n are certainly
So number, and the obtained brightness of sampling and blue light grayscale value are stored to internal storage location；
3) operation processing unit respectively shows that picture carries out information analysis and calculates to the display screen in internal storage location：If sampling
Obtained brightness and blue light grayscale value then directly read blue light irradiation level in display screen blue light emitting energy response database,
If sampling obtained brightness and blue light grayscale value not in display screen blue light emitting energy response database, interpolation method meter is utilized
Blue light irradiation level is sought in calculation, to obtain the blue light energy size I of every sub-sampling display screen in each section of sample timex；Fortune
It calculates processing unit and accumulation calculating is carried out to the blue light energy size of display screen, the blue light gross energy E accumulated；
4) blue light gross energy judging unit judges the blue light gross energy of accumulation：If judging the blue light gross energy of accumulation
It is less than setting value, then continue cycling through sampling and calculates the blue light energy size of display screen and corresponding accumulation blue light gross energy, if
When judging that the blue light gross energy of accumulation reaches or is more than setting value, alarm unit is sent out according to alarm settings for reminding appropriate stop
The information warning or the anti-blue light function of unlatching of breath are to reduce blue light injury.
The method for building up of display screen blue light emitting energy response database is in step 3)：It measures and shows first with spectrometer
Shield spectral radiance characteristic under each main brightness and main rank blue light grayscale value, then the blue light under integral and calculating its respective conditions
Irradiation level characteristic, it is then horizontal using brightness settings as condition, vertically using blue light grayscale value as condition, establish different brightness and blue light
The display screen blue light emitting energy response database of corresponding blue light irradiation level under grayscale value.
Operation processing unit carries out accumulation calculating using following equation to the blue light energy size of display screen in step 3), obtains
To the blue light gross energy E of accumulation：
Wherein, ExFor the blue light emitting energy of display screen in every section of sampling process, IxFor the blue light spoke of every sub-sampling display screen
Illumination, AblueFor the blue picture element area of display screen, Δ t is the interval time of sampling.
The method that interpolation calculation seeks blue light irradiation level in step 3) is：
Work as BGn≤BG≤BGmWhen,
Then
Wherein, BG is that the blue light grayscale value in display screen blue light emitting energy response database, I are not corresponding to BG
Blue light irradiation level, BGnFor the main rank blue light grayscale value of correspondence compared with the small single order of BG grayscale, BGmFor the corresponding master compared with the big single order of BG grayscale
Rank blue light grayscale value, InAnd ImRespectively BGnAnd BGmCorresponding blue light irradiation level.
Per the blue light irradiation level I of sub-sampling display screen in step 3)xCan also be consider eye visual angle concentrate characteristic and away from
The revised blue light irradiation level I of weighting parameters of the different contribution of deviation and the cutting of utilization regioni,j’：
I′I, j=a.II, j, and a=0~1；
Wherein, Ii,jShow that the blue light irradiation level in picture after the calculating of different location picture element, a are the weighting in region for sampling
Parameter value.
Per the blue light irradiation level I of sub-sampling display screen in step 3)xIt can also be that each sampling obtained using following formula is aobvious
Show the average blue light irradiation level I that can be sent out in pictureAvg：
Wherein, Ii,jShow that the blue light irradiation level in picture after the calculating of different location picture element, mn are each display for sampling
Sampling picture element sum in picture.
The anti-blu-ray system further includes for supporting the display screen of transparency display setting to be sampled the saturating of compensation
Lightness compensating unit, the transparency compensating unit are compensated using the blue light grayscale value that following equation obtains sampling, are obtained
It really shines blue light grayscale value BG to the display screen of transparency is set withx：
Work as T0%≤Tx≤T100%When,
Then
Wherein, TxFor transparence value, T0%For minimum transparency setting value, T100%For maximum transparency setting value, BG0%For
Display screen does not set the blue light grayscale value corresponding to transparency or minimum transparency, BG100%It is right for display screen maximum transparency
The blue light grayscale value answered.
The anti-blu-ray system further includes for incuding the preposition camera lens for judging whether human eye watches display screen, if preset lens
Head induction judges that human eye does not watch display screen, then operation processing unit is not big to the blue light energy of current display screen in step 3)
It is small to carry out accumulation calculating.
The present invention uses above technical scheme, has the advantages that：It can be according to different display screen characteristics and user
Operation information calculates user operation process, the blue light gross energy that display screen is accumulated, and then suggests that user is appropriate by prompting
Rest, or automatic startup display screen Sleep protection, or the anti-blue light function of passive type software is opened to help to reduce blue light
Injury, different modes application can help user that can more effectively reduce blue light injury and protect eyes.
Description of the drawings
In conjunction with attached drawing, the present invention is further elaborated：
Fig. 1 is the connection diagram of the active anti-blu-ray system for calculating display screen blue light cumlative energy of the present invention；
Fig. 2 is the schematic diagram that the present invention is thoroughly sampled the display picture of display screen by system interface；
Fig. 3 is the information analysis process schematic that present invention sampling shows picture；
Fig. 4 is that the present invention measures spectrum spoke of the display screen under each main brightness and main rank blue light grayscale value using spectrometer
Penetrate rate characteristic schematic diagram；
Fig. 5 is a kind of representation of display screen blue light emitting energy response database of the present invention；
Fig. 6 is another representation of display screen blue light emitting energy response database of the present invention；
Fig. 7 is each position blue light irradiation level result in example of the present invention；
Fig. 8 is the region cutting schematic diagram in example of the present invention；
Fig. 9 is that the blue light gross energy that the present invention accumulates calculates schematic diagram；
Figure 10 is that operation processing unit of the present invention does not carry out showing for accumulation calculating to the blue light energy size of current display screen
It is intended to；
Figure 11 is exemplary spectrum figure of the present invention；
Figure 12 is comparative spectrum figure of the present invention；
Figure 13 is spectral radiance and wavelength relationship schematic diagram in example of the present invention.
Specific implementation mode
As shown in Figure 1, the anti-blu-ray system of the active calculating display screen blue light cumlative energy of the present invention comprising actively
Anti- blue light functional select switch, thoroughly by system interface, internal storage location, operation processing unit, blue light gross energy judging unit and police
Show unit；
When display screen receives and show the image information content that image processing unit sequentially transmits, actively anti-blue light work(is opened
Energy selecting switch, thoroughly by system interface to the display picture S of display screen1、S2、S3…SiIt carries out multiple in one section of sample time
Sampling, and storing in internal storage location, operation processing unit to the display screen in internal storage location respectively show picture carry out analysis and
With reference to display screen blue light emitting energy response database, the blue light energy of every sub-sampling display screen in each section of sample time is calculated
Measure size E1、E2、E3…EiAnd corresponding accumulation blue light gross energy Σ E=E1+E2+E3+E4+E5+…+Ei, when blue light gross energy judges
The blue light gross energy of unit judges accumulation is less than setting value EthresholdWhen, then it continues cycling through sampling and calculates the indigo plant of display screen
Light energy size simultaneously corresponding accumulation blue light gross energy, when blue light gross energy judging unit judge the blue light gross energy of accumulation reach or
More than setting value EthresholdWhen, alarm unit according to alarm settings send out for remind the information warning suitably rested (H) or
It opens anti-blue light function and injures (I) to reduce blue light.
As shown in one of Fig. 2-13, the anti-indigo plant of the active anti-blu-ray system for calculating display screen blue light cumlative energy of the present invention
Light method, the anti-blue light method include the following steps：
1) when display screen receives and show the image information content that image processing unit sequentially transmits, if actively anti-blue light work(
Energy selecting switch is closed, then anti-blu-ray system does not work, if actively anti-blue light functional select switch is opened, is thened follow the steps
2)；
2) the display picture of display screen is sampled by system interface thoroughly：Within one section of sample time, at interval of the time
Δ t carries out primary sample by system interface to the display picture of display screen thoroughly, and sampling number is denoted as i, sample time ti, take
Sample shows that picture is Si, it is m and multiple pictures that horizontal number of sampling is n that each sampling, which shows that picture all obtains vertical sampling and counts,
Vegetarian refreshments matrix image information, image information include the screen intensity of each pixel points and blue grayscale value, wherein i, m and n are certainly
So number, and the obtained brightness of sampling and blue light grayscale value are stored to internal storage location；
As shown in Fig. 2, within one section of sample time, thoroughly by system interface at interval of time Δ t to the display picture of display screen
Face carries out primary sample, and sampling number is sequentially by 1 to i, each sampling time point t1、t2、t3…ti, corresponding sampling respectively
Display picture is S1、S2、S3…Si。
As shown in figure 3, showing picture S with samplingiFor, thoroughly different picture element points can be carried out in sampling by system interface
The image information analysis set, wherein vertical sampling points are m, and horizontal number of sampling is n, in other words, picture are shown in each sampling
In face, it can all sample m x n pixel points matrix image information and analyze, these image informations contain the screen of each pixel points
Curtain brightness and blue picture element show the display information such as grayscale, are, each pictures more with the sampling pixel points in each picture
Image information will be more complete, calculate the corresponding more representative meaning of blue light energy size of display screen.
3) operation processing unit respectively shows that picture carries out information analysis and calculates to the display screen in internal storage location：If sampling
Obtained brightness and blue light grayscale value then directly read blue light irradiation level in display screen blue light emitting energy response database,
If sampling obtained brightness and blue light grayscale value not in display screen blue light emitting energy response database, interpolation method meter is utilized
Blue light irradiation level is sought in calculation, to obtain the blue light energy size I of every sub-sampling display screen in each section of sample timex；Fortune
It calculates processing unit and accumulation calculating is carried out to the blue light energy size of display screen, the blue light gross energy E accumulated；
4) blue light gross energy judging unit judges the blue light gross energy of accumulation：If judging the blue light gross energy of accumulation
It is less than setting value, then continue cycling through sampling and calculates the blue light energy size of display screen and corresponding accumulation blue light gross energy, if
When judging that the blue light gross energy of accumulation reaches or is more than setting value, alarm unit is sent out according to alarm settings for reminding appropriate stop
The information warning or the anti-blue light function of unlatching of breath are to reduce blue light injury.
The method for building up of display screen blue light emitting energy response database is in step 3)：It measures and shows first with spectrometer
Shield spectral radiance characteristic under each main brightness and main rank blue light grayscale value, then the blue light under integral and calculating its respective conditions
Irradiation level characteristic, it is then horizontal using brightness settings as condition, vertically using blue light grayscale value as condition, establish different brightness and blue light
The display screen blue light emitting energy response database (as shown in Figure 5) of corresponding blue light irradiation level under grayscale value.
As shown in figure 4, the present invention measures display screen in each main brightness and main rank indigo plant using spectrometer Spectrometer
Spectral radiance characteristic W/Sr.m under light grayscale value2Then the blue light irradiation level under integral and calculating its respective conditions .nm,
Irradiance Blue characteristics, physical significance and unit are the blue ray radiation flux of per unit solid angle eyes impression respectively
W/Sr.m2；Institute's demonstration example is to measure and calculate on one display, the blue light under obtained difference brightness and blue light grayscale
Irradiation level result is demonstrated, it should be noted that the spectrum of wavelengths integral and calculating range of blue light energy can't limit, but it is logical
Often all it is in 350-500nm wave-length coverages, major consideration is that the energy power limit of measurement equipment and energy extent of injury are examined
The adjustment of factors done computer capacities such as consider, legend is to define blue light energy model with the wavelength Wavelength of 380-500nm
It encloses and calculates；
As shown in figure 5, in order to meet simultaneously, fundamental characteristics data is established and the purpose of efficiency is set out, display screen blue light emitting
The foundation of energy response database, level is with brightness settings (Brightness level setting) and vertically with blue light gray scale
(that is, blue light grayscale value) (Gray Level of blue color) selects for condition, and setting can not have to each contrast all
It needs to carry out measurement foundation, as long as considering according to demands such as accuracy and efficiency, carries out main contrast and collect foundation, in reality
When the blue light irradiation level corresponding to sampling display picture is sought on border, recycling interpolation method conversion regime is calculated, you can is asked
The blue light energy size information (i.e. blue light irradiation level) corresponding to display picture must be sampled.By taking example in table imposes a condition as an example,
Brightness settings are established using every 25% luminance difference as essential condition in 0-100% ranges, and in the ash of blue light 256
It in order conditions range, is established using at interval of 16 rank grayscale differences as essential condition, both the representative of B01 grayscale is blue light grayscale to meaning
In the grey order conditions of 00 (16 system), it is grey order conditions of FF (16 system) in blue light grayscale that B16 grayscale, which represents,.
As shown in fig. 6, another expression way of display screen blue light emitting characteristic energies property database of the present invention, also may be used
It is indicated using graph mode；Thus it can obviously find, when showing that the brightness settings of picture are bigger or blue grayscale is bigger,
The blue light irradiation level result that display screen is sent out will be bigger, in other words, not with the brightness settings of operator and using picture
Together, different degrees of blue light energy result is just had.
The method that interpolation calculation seeks blue light irradiation level in step 3) is：
Work as BGn≤BG≤BGmWhen,
Then
Wherein, BG is that the blue light grayscale value in display screen blue light emitting energy response database, I are not corresponding to BG
Blue light irradiation level, BGnFor the main rank blue light grayscale value of correspondence compared with the small single order of BG grayscale, BGmFor the corresponding master compared with the big single order of BG grayscale
Rank blue light grayscale value, InAnd ImRespectively BGnAnd BGmCorresponding blue light irradiation level.
As shown in fig. 7, knowing that each sampling shows in picture (brightness and blue grayscale after the image information of different location
Value), so that it may it can be distinguished with going interpolation to calculate these corresponding positions using display screen blue light emitting energy response database
The blue light irradiation level that will produce is as a result, such as the different location image information in Fig. 3 examples, by display screen blue light shown in fig. 5
Luminous energy property database calculates, you can acquires each position blue light irradiation level result (as shown in Figure 7) in example.
For example, the picture element brightness of sample position (1,2) is 50%, when blue light grayscale value is 37, because of blue light grayscale value
Setting is not the main ash order conditions of display screen blue light emitting energy response Database, you can with following grayscale interpolation method
Mode calculates the correspondence blue light irradiance value of the sample position, this method is also applicable in the not blue light irradiation level result in main shaft brightness
It seeks calculating, similarly, when brightness and blue light grayscale value rank be not in data main shaft condition, as long as being using interpolation calculation sequentially
It can equally seek.
Work as BGn≤BG≤BGmWhen, then
Wherein BG (Blue Gray) is the blue light grayscale value not on main table, i.e., 37 (16 systems), I is above-mentioned blue light ash
Correspondence blue light irradiation level of the rank value under same brightness；In addition BGn and BGm is respectively the corresponding master of small compared with BG grayscale and big single order
Rank blue light grayscale value, i.e., respectively 33 and 44 (16 systems)；In and Im is respectively then that above-mentioned blue light grayscale value is bright identical 50%
Correspondence blue light irradiation level under degree, according to the display screen blue light emitting energy response database of table 1, In and Im are respectively
0.006872 and 0.012913W/ (Sr.m2), therefore the display screen blue light irradiation level under 50% brightness and blue light grayscale value 37 is big
It is small calculate it is as follows:
Per the blue light irradiation level I of sub-sampling display screen in step 3)xCan also be consider eye visual angle concentrate characteristic and away from
The revised blue light irradiation level I of weighting parameters of the different contribution of deviation and the cutting of utilization regioni,j’：
I′I, j=a.II, j, and a=0~1；
Wherein, Ii,jShow that the blue light irradiation level in picture after the calculating of different location picture element, a are the weighting in region for sampling
Parameter value.
As shown in Figure 8, for example, the present invention considers that characteristic and distance difference contribution are concentrated in eye visual angle when practical application
And the weighting parameters amendment of region cutting is utilized, as Fig. 8 examples cutting region mainly has twoth area A, B, the areas A higher because of visual angle concentration
And apart from short, weighting parameters are larger, conversely, the areas B are because concentrating relatively low and apart from short in visual angle, weighting parameters are smaller, are with each position
The Xinlan's light irradiance calculated value for setting picture element, can be according to I 'I, j=a.II, jIt is modified, wherein a is the weighting parameters in region
It is worth (0-1), as the size of display screen and ornamental distance are different.
Per the blue light irradiation level I of sub-sampling display screen in step 3)xIt can also be that each sampling obtained using following formula is aobvious
Show the average blue light irradiation level I that can be sent out in pictureAvg：
Wherein, Ii,jShow that the blue light irradiation level in picture after the calculating of different location picture element, mn are each display for sampling
Sampling picture element sum in picture.
As shown in figure 9, operation processing unit carries out the blue light energy size of display screen using following equation in step 3)
Accumulation calculates, the blue light gross energy E accumulated：
Wherein, ExFor the blue light emitting energy of display screen in every section of sampling process, unit J/Sr is expressed as per unit radian
Solid angle eyes are practical experiences blue light light Joule energy for degree；IxFor the blue light irradiation level of every sub-sampling display screen, unit W/
Sr.m2；AblueFor the blue picture element area of display screen, unit:m2；Δ t is the interval time of sampling, unit s.
The anti-blu-ray system further includes for incuding the preposition camera lens for judging whether human eye watches display screen, if preset lens
Head induction judges that human eye does not watch display screen, then operation processing unit is not big to the blue light energy of current display screen in step 3)
It is small to carry out accumulation calculating.
As shown in Figure 10, consider that running gear actually uses situation, display screen blue light energy Blue Energy calculating may be used also
Progress design is as shown in Figure 10 (a) and (b), and luminescence display, image processing unit will not be by images when due to display screen suspend mode
The information content is transmitted to display screen image and shows, thus operation processing unit will not accumulation calculating display screen blue light emitting energy
Amount；But consider eyes whether persistently ornamental situation if progress, even if non-sleep display screen continuous illumination dispaly state,
As long as judging that human eye does not watch display screen on running gear, such as identified using preposition camera lens backer face, then calculation process
Unit will not carry out current blue light emitting energy accumulation and calculate.
The anti-blu-ray system further includes for supporting the display screen of transparency display setting to be sampled the saturating of compensation
Lightness compensating unit, the transparency compensating unit are compensated using the blue light grayscale value that following equation obtains sampling, are obtained
It really shines blue light grayscale value BG to the display screen of transparency is set withx：
Work as T0%≤Tx≤T100%When,
Then
Wherein, TxFor transparence value, T0%For minimum transparency setting value, T100%For maximum transparency setting value, BG0%For
Display screen does not set the blue light grayscale value corresponding to transparency or minimum transparency, BG100%It is right for display screen maximum transparency
The blue light grayscale value answered.
Consider the operating system of running gear, color gray scale definition, in addition to general red grayscale (R), green grayscale (G),
Blue grayscale (B) can determine except display screen luminescent color that transparency has also been understood mostly in the color displays definition of part operation system
Definition such as in Andorid operating systems, make because this will have a direct impact on the true colour development difference that shines of display screen
It is defined with the #AARRGGBB colour codings of 16 systems, wherein RR/GG/BB points is except 3 color grayscale definition value of red green blue, also meeting are more
Two transparency colour codings are defined, the definition (00-FF) of transparency AA values is done, when numerical value is FF, that is, indicate it is completely opaque
(T=0%), both display screen grayscale numerical value was how many to meaning at this time, and the actually luminous grayscale value of display screen is exactly how many but works as AA
When value is not FF (T ≠ 0%), system can do transparency complementary color to the true R/G/B colors that shine of display screen, therefore be actually sent out
Gray-scale colors will will be different in the setting of original color grayscale value.
So-called transparency complementary color program can refer to shown in Figure 11 exemplary spectrum figures, and the original display colour coding of legend is set as #
It is all 00 because RGB is the setting of all colours grayscale when AARRGGBB=FF000000, therefore when transparency is set as FF (T=
0%), both without transparency when, display screen it is true shine be equal to original RGB color code effect, do not have any spectral luminescence,
RGB neither shows any color of light.But as transparency is set by CC (T=20%), 99 (T=40%), 66 (T=
60%) when, 33 (T=80%), 00 (T=100%) increase variation, the true of system shines, it will with the increase of transparency
And gradually light filling, increase spectrum gray scale, until transparency reach 00 (T=100%) it is fully transparent when, display screen is true at this time
Shine result (#AARRGGBB=00000000) will by compensate to equivalent transparency be FF (T=0%) without transparency when
The maximum quality white light of RGB gray scales (#AARRGGBB=FFFFFFFF), the result as shown in Figure 12 comparative spectrum figures.
If therefore it follows that the operating system of a running gear, when supporting transparency display setting, system is in reference sample
Image information (brightness, blue light grayscale) and display screen blue light emitting energy response database, go calculate display screen blue light spoke
When brightness value is with energy, it is impossible to directly with reference to the blue light grayscale value of image information at this time, because of the benefit of system transparency at this time
It repays, it will change that true display screen shines as a result, in this case, the lower true luminous blue light grayscale of transparency setting
(BGx), it can calculate and acquire by following formula：
Work as T0%≤Tx≤T100%When,
Then
Wherein, TxFor transparence value (00-FF), T0%For minimum transparency setting value FF, T100%It is set for maximum transparency
Value 00, BG0%The blue light grayscale value corresponding to transparency or minimum transparency FF (T=0%), BG are not set for display screen100%For
Blue light grayscale value corresponding to display screen maximum transparency 00 (T=100%).Due to penetration light filling, that is, it is maximum
Blue light grayscale value FF, the practical case that calculates can refer to spectral radiance and wavelength relationship shown in following example explanation and Figure 13
Schematic diagram.
If a display screen shows picture, it sets brightness and is defined as #AARRBBGG=# as 25% and color gray scale
The blue light picture of 7F000099, because its transparency is 7F (T=50%), at this time under blue light grayscale 99, the true of display screen shines
Blue light gray scale, can calculate taken as below：
It is with blue light irradiation level I opposite at this timex, blue by the display screen of true blue light gray value BGx=CC inquiry tables 1
It is 0.094928W/ (Sr.m known to light luminous energy characteristic data bank2)。
And the practical measurement of spectrometer Spectrometer instruments is used to integrate, display screen is 25% and color ash in brightness
The blue light picture irradiance value Ix ' of rank #AARRBBGG=#7F000099 is 0.094153W/ (Sr.m2), therefore by following formula error rate
It calculates it is found that the two error degree only -0.82%, is that can quickly calculate the true of reflection display screen with above-mentioned algorithmic formula
Blue light energy characteristic.
Above description should not have protection scope of the present invention any restriction.
Claims (9)
1. a kind of active anti-blu-ray system for calculating display screen blue light cumlative energy, it is characterised in that：It includes the anti-indigo plant of active
It is light functional select switch, thoroughly single by system interface, internal storage location, operation processing unit, blue light gross energy judging unit and warning
Member；
When display screen receives and show the image information content that image processing unit sequentially transmits, actively anti-blue light function choosing is opened
Switch is selected, the multiple sampling in one section of sample time is carried out to the display picture of display screen by system interface thoroughly, and store to interior
In memory cell, operation processing unit respectively shows that picture analyze and with reference to display screen blue light hair to the display screen in internal storage location
Light energy characteristic database calculates the blue light energy size of every sub-sampling display screen in each section of sample time and corresponding accumulation
Blue light gross energy is then continued cycling through when blue light gross energy judging unit judges that the blue light gross energy of accumulation is less than setting value
The blue light energy size of sampling and calculating display screen and corresponding accumulation blue light gross energy, when the judgement of blue light gross energy judging unit is tired
When long-pending blue light gross energy reaches or is more than setting value, alarm unit is sent out according to alarm settings for reminding the police suitably to rest
Show information or opens anti-blue light function to reduce blue light injury.
2. a kind of anti-blue light of active anti-blu-ray system for calculating display screen blue light cumlative energy according to claim 1
Method, it is characterised in that：It includes the following steps：
1) when display screen receives and show the image information content that image processing unit sequentially transmits, if actively anti-blue light function choosing
It selects switch to close, then anti-blu-ray system does not work, if actively anti-blue light functional select switch is opened, thens follow the steps 2)；
2) the display picture of display screen is sampled by system interface thoroughly：Within one section of sample time, at interval of time Δ t,
Primary sample is carried out to the display picture of display screen by system interface thoroughly, sampling number is denoted as i, sample time ti, sample aobvious
Show that picture is Si, it is m and multiple pixel points that horizontal number of sampling is n that each sampling, which shows that picture all obtains vertical sampling and counts,
Matrix image information, image information include the screen intensity of each pixel points and blue grayscale value, wherein i, m and n are nature
Number, and the obtained brightness of sampling and blue light grayscale value are stored to internal storage location；
3) operation processing unit respectively shows that picture carries out information analysis and calculates to the display screen in internal storage location：If sampling obtains
Brightness and blue light grayscale value in display screen blue light emitting energy response database, then blue light irradiation level is directly read, if taking
Brightness that sample obtains and blue light grayscale value are then asked using interpolation calculation not in display screen blue light emitting energy response database
Blue light irradiation level is taken, to obtain the blue light energy size I of every sub-sampling display screen in each section of sample timex；At operation
Reason unit carries out accumulation calculating to the blue light energy size of display screen, the blue light gross energy E accumulated；
4) blue light gross energy judging unit judges the blue light gross energy of accumulation：If judging, the blue light gross energy of accumulation does not surpass
Setting value is crossed, then continue cycling through sampling and calculates the blue light energy size of display screen and corresponding accumulation blue light gross energy, if judging
The blue light gross energy of accumulation reaches or when more than setting value, and alarm unit sends out according to alarm settings and suitably rests for reminding
Information warning or the anti-blue light function of unlatching are to reduce blue light injury.
3. a kind of anti-blue light of active anti-blu-ray system for calculating display screen blue light cumlative energy according to claim 2
Method, it is characterised in that：The method for building up of display screen blue light emitting energy response database is in step 3)：First with spectrometer
Measure spectral radiance characteristic of the display screen under each main brightness and main rank blue light grayscale value, then integral and calculating its respective conditions
Under blue light irradiation level characteristic, then level established different bright using brightness settings as condition, vertically using blue light grayscale value as condition
The display screen blue light emitting energy response database of corresponding blue light irradiation level under degree and blue light grayscale value.
4. a kind of anti-blue light of active anti-blu-ray system for calculating display screen blue light cumlative energy according to claim 2
Method, it is characterised in that：Operation processing unit tires out the blue light energy size of display screen using following equation in step 3)
Product calculates, the blue light gross energy E accumulated：
Wherein, ExFor the blue light emitting energy of display screen in every section of sampling process, IxIt is irradiated for the blue light of every sub-sampling display screen
Degree, AblueFor the blue picture element area of display screen, Δ t is the interval time of sampling.
5. a kind of active anti-blu-ray system and method for calculating display screen blue light cumlative energy according to claim 2,
It is characterized in that：The method that interpolation calculation seeks blue light irradiation level in step 3) is：
Work as BGn≤BG≤BGmWhen,
Then
Wherein, BG is that the blue light grayscale value in display screen blue light emitting energy response database, I are not the blue light corresponding to BG
Irradiation level, BGnFor the main rank blue light grayscale value of correspondence compared with the small single order of BG grayscale, BGmIt is blue for the main rank of correspondence compared with the big single order of BG grayscale
Light grayscale value, InAnd ImRespectively BGnAnd BGmCorresponding blue light irradiation level.
6. a kind of active anti-blu-ray system and method for calculating display screen blue light cumlative energy according to claim 2,
It is characterized in that：Per the blue light irradiation level I of sub-sampling display screen in step 3)xCan also be consider eye visual angle concentrate characteristic and
The revised blue light irradiation level I of weighting parameters of region cutting is contributed and utilized to distance differencei,j’：
I′I, j=a.II, j, and a=0~1；
Wherein, Ii,jShow that the blue light irradiation level in picture after the calculating of different location picture element, a are the weighting parameters in region for sampling
Value.
7. a kind of active anti-blu-ray system and method for calculating display screen blue light cumlative energy according to claim 2,
It is characterized in that：Per the blue light irradiation level I of sub-sampling display screen in step 3)xIt can also be each sampling obtained using following formula
The average blue light irradiation level I that can be sent out in display pictureAvg：
Wherein, Ii,jShow that the blue light irradiation level in picture after the calculating of different location picture element, mn are each display picture for sampling
In sampling picture element sum.
8. a kind of active anti-blu-ray system and method for calculating display screen blue light cumlative energy according to claim 2,
It is characterized in that：The anti-blu-ray system further includes for supporting the display screen of transparency display setting to be sampled compensation
Transparency compensating unit, the transparency compensating unit are compensated using the blue light grayscale value that following equation obtains sampling,
The display screen for obtaining being set with transparency really shines blue light grayscale value BGx：
Work as T0%≤Tx≤T100%When,
Then
Wherein, TxFor transparence value, T0%For minimum transparency setting value, T100%For maximum transparency setting value, BG0%For display
Screen does not set the blue light grayscale value corresponding to transparency or minimum transparency, BG100%Corresponding to display screen maximum transparency
Blue light grayscale value.
9. a kind of anti-blue light of active anti-blu-ray system for calculating display screen blue light cumlative energy according to claim 2
Method, it is characterised in that：The anti-blu-ray system further include for incuding the preposition camera lens for judging whether human eye watches display screen,
If preposition camera lens induction judges that human eye does not watch display screen, operation processing unit is not to the indigo plant of current display screen in step 3)
Light energy size carries out accumulation calculating.
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| CN111312196A (en) * | 2019-06-28 | 2020-06-19 | 深圳市鸿合创新信息技术有限责任公司 | Screen blue light amount adjusting method and device and intelligent electronic equipment |
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| CN113870750A (en) * | 2021-10-08 | 2021-12-31 | 惠仁康宁(苏州)健康科技有限公司 | Method for setting blue light radiation safety boundary of color temperature and radiation accumulation |
| CN113908442A (en) * | 2021-10-08 | 2022-01-11 | 惠仁康宁(苏州)健康科技有限公司 | Simulation calculation method of human retina blue light irradiation damage time repair factor |
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