CN104978946A - Display device backlight self-adaptive adjusting method and apparatus - Google Patents
Display device backlight self-adaptive adjusting method and apparatus Download PDFInfo
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Abstract
The invention discloses a display device backlight self-adaptive adjusting method. The method comprises the following steps: obtaining real-time weather information of the position of a display device and surrounding ambient light information of the display device; according to the ambient light information and a preset reference luminance value, determining a color adjusting value, and according to the color adjusting value, the real-time weather information and the ambient light information, determining an optimal backlight color and optimal backlight brightness; and adjusting the backlight of the display device to have the optimal backlight color and the optimal backlight brightness. The invention further discloses a display device backlight self-adaptive adjusting apparatus. According to the invention, the real-time weather information and the ambient light information are obtained by use of the display device, addition of hardware structures is unnecessary, and an increase of the manufacturing cost is avoided; and the optimal backlight color and the optimal backlight brightness are determined according to the real-time weather information and the ambient light information, and based on this, a backlight light source is adjusted, such that the adjustment precision is high, the screen backlight is enabled to be closer to the human eye comfort level in a current light environment, and human eyesight is protected.
Description
Technical field
The present invention relates to backlight display technique field, be related specifically to the method and apparatus of display device backlight self-adaptative adjustment.
Background technology
At present, the electronic equipment such as computer, TV, Pad, mobile phone is seen everywhere in people's daily life.Along with popularizing of these high-tech products, also negative impact and injury are brought on the health of people, particularly for portable smart machines such as mobile phone, PAD, notebook computers, due to the portability that it uses, although facilitate user to use anywhere or anytime, but screen light stimulates for a long time, cause certain injury but to the eyesight of user.Because current display device seldom possesses screen intensity self-adaptative adjustment function, when external environment condition light changes, display device cannot adjust screen backlight with ambient light, such as user is under the environment that light is brighter, screen intensity is brighter, and when user enters under the environment of dark, screen continues to keep brighter state, the eyes to user will certainly be stimulated, affect user's eyesight.Existing can the method for Automatic adjusument backlight, optical flame detector is normally additionally installed in the display device detect external ambient light and then carry out rough adjustment to backlight illumination, but optical flame detector cost is higher, the manufacturing cost of display device can be increased undoubtedly, and need for installing space reserved by optical flame detector in the display device, and design the circuit matched, add the complexity of circuit structure and the volume of display device undoubtedly, and backlight Automatic adjusument precision is not high.
Foregoing, only for auxiliary understanding technical scheme of the present invention, does not represent and admits that foregoing is prior art.
Summary of the invention
Fundamental purpose of the present invention, for providing a kind of method and apparatus of display device backlight self-adaptative adjustment, utilizes the existing hardware configuration of display device self to realize high-precision self-adaptative adjustment screen backlight.
For achieving the above object, the present invention proposes a kind of method of display device backlight self-adaptative adjustment, comprises step:
Through the real-time weather information of the Network Capture display device position that display device accesses;
The camera of employing display device obtains the surround lighting around display device, determines surround lighting information;
According to described surround lighting information and the Benchmark brightness value determination color adjusted value preset, and determine best backlight color and best backlight illumination according to described color adjusted value, described real-time weather information and surround lighting information;
The screen backlight of display device is adjusted to described best backlight color and best backlight illumination.
Preferably, described according to described surround lighting information and the Benchmark brightness value determination color adjusted value preset, and determine that the step of best backlight color and best backlight illumination specifically comprises according to described color adjusted value, described real-time weather information and surround lighting information:
According to described real-time weather information, the three primary colors mode chromatographic that inquiry is preset, obtains the color value (fR, fG, fB) that described real-time weather information is corresponding;
According to described surround lighting information, determine ambient light color value (hR, hG, hB); Described surround lighting information comprises brightness Y, tone I and saturation degree Q;
The color value (fR, fG, fB) corresponding according to described real-time weather information and ambient light color value (hR, hG, hB), determine base colors value (R, G, B);
Determine brightness adjustment value Δ Y according to the brightness Y of described surround lighting and the Benchmark brightness value Y0 that presets, and according to the tone I of described brightness adjustment value Δ Y, Benchmark brightness value Y0, described surround lighting and saturation degree Q, determine hue adjustment value rI and saturation degree adjusted value rQ;
According to brightness Y, hue adjustment value rI and the saturation degree adjusted value rQ of described surround lighting, determine color adjusted value (rR, rG, rB);
According to base colors value (R, G, B) and color adjusted value (rR, rG, rB), determine best backlight color (LR, LG, LB);
Best backlight illumination LY is defined as Y0, and Y0 is default Benchmark brightness value.
Preferably, the described color value corresponding according to real-time weather information (fR, fG, fB) and ambient light color value (hR, hG, hB), determine that the step of base colors value (R, G, B) specifically comprises:
Relatively described (fR, fG, fB) and (hR, hG, hB) levels off to the convergence degree of default color measurement threshold value (R0, G0, B0);
According to convergence degree comparative result, adjustment Wf and Wh size; Wherein, Wf is the weight of (fR, fG, fB), and Wh is the weight of (hR, hG, hB), Wf+Wh=1;
According to the weight after adjustment, determine base colors value (R, G, B)=(fR, fG, fB) × Wf+(hR, hG, hB) × Wh.
Preferably, described according to convergence degree comparative result, the step of adjustment Wf and Wh size specifically comprises:
When described (fR, fG, fB) more levels off to (R0, G0, B0) than (hR, hG, hB), Wf > Wh;
When described (hR, hG, hB) more levels off to (R0, G0, B0) than (fR, fG, fB), Wh > Wf;
When described (hR, hG, hB) and (fR, fG, fB) level off to the convergence degree of (R0, G0, B0) identical time, Wf=Wh.
Preferably, described comparison (fR, fG, fB) and (hR, hG, hB) level off to the step that default color weighs the convergence degree of threshold value (R0, G0, B0) and specifically comprise:
Relatively | fG-G0| and | the size of hG-G0|;
As | fG-G0| < | during hG-G0|, judge that described (fR, fG, fB) more levels off to (R0, G0, B0) than (hR, hG, hB);
As | fG-G0| > | during hG-G0|, judge that described (hR, hG, hB) more levels off to (R0, G0, B0) than (fR, fG, fB);
When | during fG-G0|=|hG-G0|, compare | fR-R0| and | the size of hR-R0|;
As | fR-R0| < | during hR-R0|, judge that described (fR, fG, fB) more levels off to (R0, G0, B0) than (hR, hG, hB);
As | fR-R0| > | during hR-R0|, judge that described (hR, hG, hB) more levels off to (R0, G0, B0) than (fR, fG, fB);
When | during fR-R0|=|hR-R0|, compare | fB-B0| and | the size of hB-B0|;
As | fB-B0| < | during hB-B0|, judge that described (fR, fG, fB) more levels off to (R0, G0, B0) than (hR, hG, hB);
As | fB-B0| > | during hB-B0|, judge that described (hR, hG, hB) more levels off to (R0, G0, B0) than (fR, fG, fB);
When | during fB-B0|=|hB-B0|, judge that described (hR, hG, hB) and (fR, fG, fB) levels off to the convergence degree of (R0, G0, B0) identical.
Preferably, described brightness adjustment value Δ Y=|Y0-Y|;
Described hue adjustment value rI and saturation degree adjusted value rQ adopts following formula to obtain:
rI＝I＋ΔY/Y0；
rQ＝Q＋ΔY/Y0。
Preferably, described best backlight color (LR, LG, LB) adopts following formula to obtain:
（LR，LG，LB）=（R，G，B）+（rR，rG，rB）。
Preferably, described real-time weather information comprises situation at sunshine, weather condition, temperature, ultraviolet index and/or PM2.5 value.
The present invention also proposes a kind of device of display device backlight self-adaptative adjustment, comprising:
Weather acquisition module, for the real-time weather information of Network Capture display device position accessed through display device;
Surround lighting acquisition module, for adopting the camera of display device to obtain surround lighting around display device, determines surround lighting information;
Best backlight determination module, for according to described surround lighting information and the Benchmark brightness value determination color adjusted value preset, and determines best backlight color and best backlight illumination according to described color adjusted value, described real-time weather information and surround lighting information;
Backlight adjusting module, for being adjusted to described best backlight color and best backlight illumination by the screen backlight of display device.
Preferably, described best backlight determination module specifically for:
According to described real-time weather information, inquiry three primary colors mode chromatographic, obtains the color value (fR, fG, fB) that described real-time weather information is corresponding;
According to described surround lighting information, determine ambient light color value (hR, hG, hB); Described surround lighting information comprises brightness Y, tone I and saturation degree Q;
The color value (fR, fG, fB) corresponding according to described real-time weather information and ambient light color value (hR, hG, hB), determine base colors value (R, G, B);
Determine brightness adjustment value Δ Y according to the brightness Y of described surround lighting and the Benchmark brightness value Y0 that presets, and according to the tone I of described brightness adjustment value Δ Y, Benchmark brightness value Y0, described surround lighting and saturation degree Q, determine hue adjustment value rI and saturation degree adjusted value rQ;
According to brightness Y, hue adjustment value rI and the saturation degree adjusted value rQ of described surround lighting, determine color adjusted value (rR, rG, rB);
According to base colors value (R, G, B) and color adjusted value (rR, rG, rB), determine best backlight color (LR, LG, LB);
Best backlight illumination LY is defined as Y0, and Y0 is default Benchmark brightness value.
The present invention adopts the display device being connected with network to obtain local real-time weather information, and adopts the camera of display device to obtain surrounding environment optical information, without the need to increasing the hardware configuration of display device, is conducive to the increase avoiding manufacturing cost; Environmentally optical information and preset reference brightness value determination brightness adjustment value; then best backlight color is determined according to brightness adjustment value, real-time weather information and surround lighting information around; and preset reference brightness value is defined as optimal brightness value; and adjust back light according to this; screen backlight brightness and color are in course of adjustment more coordinate; thus closer to the human eye comfort level under current luminous environment, Adjustment precision is high, be conducive to protecting human eyesight.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the embodiment of the method for display device backlight self-adaptative adjustment of the present invention;
Fig. 2 is the flow chart of steps determining best backlight color and best backlight illumination in the embodiment of the method for display device backlight self-adaptative adjustment of the present invention;
Fig. 3 is the flow chart of steps determining base colors value in the embodiment of the method for display device backlight self-adaptative adjustment of the present invention;
Fig. 4 is the flow chart of steps comparing convergence degree in the embodiment of the method for display device backlight self-adaptative adjustment of the present invention;
Fig. 5 is the structural representation of the embodiment of the device of display device backlight self-adaptative adjustment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, Fig. 1 is the schematic flow sheet of the embodiment of the method for display device backlight self-adaptative adjustment of the present invention.The method of the display device backlight self-adaptative adjustment that the present embodiment is mentioned, comprises step:
Step S10, through the real-time weather information of the Network Capture display device position that display device accesses;
The display device of the present embodiment can be the portable mobile equipments such as mobile phone, notebook computer, PAD, also can be the electronic equipment such as desktop computer, all-in-one, Web TV with camera, the display screen of display device adopts backlight display mode, regulates brightness and the color of display frame by adjustment backlight.First need to guarantee display device interconnection network, the network connection that display device accesses is detected, if do not connected, can display reminding information prompting user.When display device interconnection network, by Network Capture local weather, local positional information can be set in advance in the display device, such as city, place title, display device is connected to weather monitoring class server through network, get local real-time weather information, comprise situation at sunshine, weather condition, temperature, ultraviolet index, PM2.5 value etc., these information have certain relation with local extraneous light.
In order to record real-time weather information more accurately, the position for display device obtains by the mode of locating in real time.Such as, for equipment such as notebook computer, desktop computer, all-in-ones, wired or wireless network can be opened, adopt the mode of network positions to obtain equipment position information; And for the equipment such as mobile phone, PAD, except the mode of network positions, open wifi or data network location, also can open GPS, adopt GPS locator meams to obtain equipment position information.After the accurate positional information of acquisition, the Weather information that display device is arrived by network inquiry is more accurate, is conducive to obtaining the best backlight color of pinpoint accuracy and best backlight illumination.
Step S20, the camera of employing display device obtains the surround lighting around display device, determines surround lighting information;
Simultaneously, also need the camera opening display device, surround lighting is around obtained by camera, such as, surround lighting is gathered by the optical sensor of camera, and by optical sensor, the surround lighting collected is converted to electric signal and exports processor to, processor is according to the size determination surround lighting information of electric signal; Or taken pictures by camera, and carry out discriminance analysis by the colored light in processor comparison film, obtain surround lighting information.Surround lighting information comprises brightness Y, tone I and saturation degree Q, also known as color space values.Directly Y, I, Q surround lighting information can be converted to according to the surround lighting collected for the display device possessing the direct translation function of optical information; For the display device not possessing the direct translation function of optical information, light luminance spectrum can be stored in advance in display device storer, brightness Y, the tone I and saturation degree Q corresponding to surround lighting of surrounding can be inquired from light luminance spectrum.
Step S30, environmentally optical information and the Benchmark brightness value determination color adjusted value preset, and determine best backlight color and best backlight illumination according to color adjusted value, real-time weather information and surround lighting information;
In YIQ color space, the brightness value closest to visual comfort is defined as Benchmark brightness value Y0, Y0 value can be stored in advance in display device storer.Environmentally optical information determines color adjusted value with the Benchmark brightness value Y0 preset; then according to the surround lighting information determination base colors value that real-time weather information and the camera collection of network inquiry acquisition arrive; again according to color adjusted value and base colors value determination optimal colors value; analyze under obtaining current light environment; color and the brightness of human eyesight can be protected, as optimum color and the brightness of the back light of display device closest to human eye comfort level.
Step S40, is adjusted to best backlight color and best backlight illumination by the screen backlight of display device.
After determining to need adjustment backlight illumination; backlight adjustment instruction is sent to backlight driving unit; and the best backlight color obtained and best backlight illumination are sent in the lump; backlight driving unit is according to best backlight color and best backlight illumination adjustment back light; make screen backlight brightness and color closer to the human eye comfort level under current luminous environment, be conducive to protecting human eyesight.
The present embodiment adopts the display device being connected with network to obtain local real-time weather information, and adopts the camera of display device to obtain surrounding environment optical information, without the need to increasing the hardware configuration of display device, is conducive to the increase avoiding manufacturing cost; Environmentally optical information and Benchmark brightness value determination color adjusted value; then best backlight color and best backlight illumination is determined according to the surround lighting information of color adjusted value and real-time weather information and surrounding; and adjust back light according to this; screen backlight brightness and color are in course of adjustment more coordinate; thus closer to the human eye comfort level under current luminous environment; Adjustment precision is high, is conducive to protecting human eyesight.
As shown in Figure 2, Fig. 2 is the flow chart of steps determining best backlight color and best backlight illumination in the embodiment of the method for display device backlight self-adaptative adjustment of the present invention.The present embodiment is based on embodiment illustrated in fig. 1, and step S30 specifically comprises:
Step S31, according to real-time weather information, the three primary colors mode chromatographic that inquiry is preset, obtains the color value (fR, fG, fB) that real-time weather information is corresponding;
Three primary colors mode chromatographic is stored in display device storer by the present embodiment in advance.Three primary colors pattern, also known as RGB color mode or RGB pattern, is a kind of additive color model, is added by red, green, blue three look, obtains diversified coloured light in different ratios.In three primary colors mode chromatographic, the color value that different real-time weather information is corresponding different, according to sunshine situation, ultraviolet index, weather, temperature, the Weather information such as PM2.5 value, corresponding color value can be found in three primary colors mode chromatographic, such as, temperature 32 DEG C, weather is fine, ultraviolet index 9, corresponding color value is #FF8C00, is converted into red, green, blue three color ratio example for (128,220,100), also just color value can be determined according to one or more combinations in addition.
Step S32, environmentally optical information, determine ambient light color value (hR, hG, hB);
According to brightness Y, the tone I and saturation degree Q of display device surrounding environment light, adopt following formula determination ambient light color value (hR, hG, hB):
hR＝Y＋0.956×I＋0.623×Q；
hG＝Y－0.272×I－0.648×Q；
hB＝Y－1.105×I＋0.705×Q。
Step S33, the color value (fR, fG, fB) corresponding according to real-time weather information and ambient light color value (hR, hG, hB), determine base colors value (R, G, B);
When determining base colors value (R, G, B), the real-time weather situation of surrounding environment residing for display device and locality should be considered, based on the color value closer to visual comfort.
Step S34, environmentally the brightness Y of light and the Benchmark brightness value Y0 that presets determines brightness adjustment value Δ Y, and according to the tone I of brightness adjustment value Δ Y, Benchmark brightness value Y0, surround lighting and saturation degree Q, determines hue adjustment value rI and saturation degree adjusted value rQ;
Brightness adjustment value Δ Y=|Y0-Y|, hue adjustment value rI and saturation degree adjusted value rQ can adopt following formula to obtain:
rI＝I＋ΔY/Y0；
rQ＝Q＋ΔY/Y0。
Wherein, | Y0-Y| represents that the difference of Y0 and Y takes absolute value, i.e. brightness adjustment value Δ Y, when Y is less than Y0, Δ Y=|Y0-Y|=Y0-Y; When Y is greater than Y0, Δ Y=|Y0-Y|=Y-Y0; When Y equals Y0, Δ Y=|Y0-Y|=0.Preset reference brightness value can be distributed between [80,230], and the predeterminable Benchmark brightness value Y0 of the present embodiment is 205.
Step S35, environmentally brightness Y, the hue adjustment value rI of light and saturation degree adjusted value rQ, determine color adjusted value (rR, rG, rB);
After determining hue adjustment value rI and saturation degree adjusted value rQ, adopt following formula determination color adjusted value (rR, rG, rB):
rR＝Y＋0.956×rI＋0.623×rQ；
rG＝Y－0.272×rI－0.648×rQ；
rB＝Y－1.105×rI＋0.705×rQ。
Step S36, according to base colors value (R, G, B) and color adjusted value (rR, rG, rB), determines best backlight color (LR, LG, LB);
The best backlight color (LR, LG, LB) of final acquisition is:
（LR，LG，LB）=（R，G，B）+（rR，rG，rB）。
Step S37, is defined as Y0 by best backlight illumination LY.
Meanwhile, because Benchmark brightness value Y0 is the brightness value closest to visual comfort, therefore directly best backlight illumination LY can be defined as Y0, adopt Y0 to adjust the brightness of back light as adjustment parameter.
The present embodiment is according to the color value (fR of real-time weather information acquisition, fG, fB) and the environmentally brightness Y, the tone I and saturation degree Q that obtain of optical information, and the adjusted value environmentally between luminance brightness and preset reference brightness value is checked colors and is in harmonious proportion saturation degree and adjusts, then be mapped to color space to adjust color, the best backlight color of pinpoint accuracy and high degrees of coordination and best backlight illumination is obtained with this, screen backlight brightness after adjustment and color are coordinated more, and more close to the human eye comfort level under current luminous environment.
As shown in Figure 3, Fig. 3 is the flow chart of steps determining base colors value in the embodiment of the method for display device backlight self-adaptative adjustment of the present invention.The present embodiment is based on embodiment illustrated in fig. 2, and step S33 specifically comprises:
Step S331, compares (fR, fG, fB) and (hR, hG, hB) and levels off to default color and weigh the convergence degree of threshold value (R0, G0, B0);
Step S332, according to convergence degree comparative result, adjustment Wf and Wh size; Wherein, Wf is the weight of (fR, fG, fB), and Wh is the weight of (hR, hG, hB), Wf+Wh=1;
Step S333, according to the weight after adjustment, determines base colors value (R, G, B)=(fR, fG, fB) × Wf+(hR, hG, hB) × Wh.
The present embodiment is provided with color in advance and weighs threshold value (R0, G0, B0) in display device storer, and the color value of this value and visual comfort relatively, such as, arranges color and weighs threshold value (R0, G0, B0)=(204,232,207).Relatively in (hR, hG, hB) and (fR, fG, fB) closer to (R0, G0, B0) one group, according to comparative result, adjust (R, G, B)=(fR, fG, fB) × Wf+(hR, hG, hB) ratio of weights W f and Wh in × Wh.When (fR, fG, fB) color value closer to visual comfort, Wf > Wh, when (hR, hG, hB) color value closer to visual comfort, Wh > Wf, the Wf=Wh when both degrees of closeness are equal.Such as, when (fR, fG, fB) closer to (R0, G0, B0) time, Wf=0.8, Wh=0.2; When (hR, hG, hB) closer to (R0, G0, B0) time, Wh=0.8, Wf=0.2; When both degrees of closeness are equal, (hR, hG, hB) and (fR, fG, fB) respectively accounts for half, Wf=Wh=0.5.The value of above-mentioned 0.8 and 0.2 is the one of the present embodiment, according to circumstances can revise setting, such as 0.7:0.3,0.9:0.1 or 0.65:0.35 etc.
The present embodiment is by color value (fR corresponding for Weather information, fG, and color value (hR corresponding to surround lighting information fB), hG, hB) threshold value (R0 is weighed with color respectively, G0, B0) compare, to adjust (hR, hG, and (fR hB), fG, fB) at base colors value (R, G, B) proportion in, make the base colors value (R of acquisition, G, B) more visual comfort is met, be conducive to obtaining the best backlight color of pinpoint accuracy and high degrees of coordination and best backlight illumination, make the screen backlight brightness after adjustment and color more close to the human eye comfort level under current luminous environment.
As shown in Figure 4, Fig. 4 is the flow chart of steps comparing convergence degree in the embodiment of the method for display device backlight self-adaptative adjustment of the present invention.The present embodiment is based on embodiment illustrated in fig. 3, and step S331 specifically comprises:
Step S3311, compares | fG-G0| and | the size of hG-G0|; When | fG-G0| < | during hG-G0|, perform step S3312; When | fG-G0| > | during hG-G0|, perform step S3313; When | during fG-G0|=|hG-G0|, perform step S3314;
Step S3312, judges that (fR, fG, fB) more levels off to (R0, G0, B0) than (hR, hG, hB);
Step S3313, judges that (hR, hG, hB) more levels off to (R0, G0, B0) than (fR, fG, fB);
Step S3314, compares | fR-R0| and | the size of hR-R0|; When | fR-R0| < | during hR-R0|, perform step S3312; When | fR-R0| > | during hR-R0|, perform step S3313; When | during fR-R0|=|hR-R0|, perform step S3315;
Step S3315, compares | fB-B0| and | the size of hB-B0|; When | fB-B0| < | during hB-B0|, perform step S3312; When | fB-B0| > | during hB-B0|, perform step S3313; When | during fB-B0|=|hB-B0|, perform step S3316;
Step S3316, judges that (hR, hG, hB) and (fR, fG, fB) levels off to the convergence degree of (R0, G0, B0) identical.
In the present embodiment, compare (hR, hG, hB) and (fR, fG, fB) successively according to the order of G, R, B and level off to the convergence degree of (R0, G0, B0).For G value, | the absolute value of fG-G0| and fG and G0 difference, | the absolute value of hG-G0| and hG and G0 difference, relatively | fG-G0| and | the size of hG-G0|, namely which to compare in fG and hG and more levels off to G0, for the G value that the absolute value of difference is less, illustrate that this G value more levels off to G0, such as | fG-G0| < | during hG-G0|, illustrate that fG more levels off to G0 than hG, then by (fR, fG, fB) weight arranges greatly, (hR, hG, hB) weight arranges little, without the need to comparing R and B value again, when | during fG-G0|=|hG-G0|, just follow-up R value.If the convergence program of G, R, B value is all identical, then the weight of (fR, fG, fB) and (hR, hG, hB) is arranged the same large.
The present embodiment adopts the mode of difference comparsion to judge (hR, hG, hB) and (fR, fG, fB) (R0 is leveled off to, G0, B0) convergence degree, determination methods is simple, be conducive to the content that minimizing routine processes takies, improve processing speed, and judged result fiduciary level is high, is conducive to obtaining the best backlight color of pinpoint accuracy and best backlight illumination.
As shown in Figure 5, Fig. 5 is the structural representation of the embodiment of the device of display device backlight self-adaptative adjustment of the present invention.The device of the display device backlight self-adaptative adjustment that the present embodiment is mentioned, comprising:
Weather acquisition module 10, for the real-time weather information of Network Capture display device position accessed through display device;
Surround lighting acquisition module 20, for adopting the camera of display device to obtain surround lighting around display device, determines surround lighting information;
Best backlight determination module 30, for environmentally optical information and the Benchmark brightness value determination color adjusted value preset, and determines best backlight color and best backlight illumination according to color adjusted value, real-time weather information and surround lighting information;
Backlight adjusting module 40, for being adjusted to best backlight color and best backlight illumination by the screen backlight of display device.
The display device of the present embodiment can be the portable mobile equipments such as mobile phone, notebook computer, PAD, also can be the electronic equipment such as desktop computer, all-in-one, Web TV with camera, the display screen of display device adopts backlight display mode, regulates brightness and the color of display frame by adjustment backlight.First need to guarantee display device interconnection network, the network connection that display device accesses is detected, if do not connected, can display reminding information prompting user.
When display device interconnection network, by Network Capture local weather, local positional information can be set in advance in the display device, such as city, place title, display device is connected to weather monitoring class server through network, get local real-time weather information, comprise situation at sunshine, weather condition, temperature, ultraviolet index, PM2.5 value etc., these information have certain relation with local extraneous light.
In order to record real-time weather information more accurately, the position for display device obtains by the mode of locating in real time.Such as, for equipment such as notebook computer, desktop computer, all-in-ones, wired or wireless network can be opened, adopt the mode of network positions to obtain equipment position information; And for the equipment such as mobile phone, PAD, except the mode of network positions, open wifi or data network location, also can open GPS, adopt GPS locator meams to obtain equipment position information.After the accurate positional information of acquisition, the Weather information that display device is arrived by network inquiry is more accurate, is conducive to obtaining the best backlight color of pinpoint accuracy and best backlight illumination.
Simultaneously, also need the camera opening display device, surround lighting is around obtained by camera, such as, surround lighting is gathered by the optical sensor of camera, and by optical sensor, the surround lighting collected is converted to electric signal and exports processor to, processor is according to the size determination surround lighting information of electric signal; Or taken pictures by camera, and carry out discriminance analysis by the colored light in processor comparison film, obtain surround lighting information.Surround lighting information comprises brightness Y, tone I and saturation degree Q, also known as color space values.Directly Y, I, Q surround lighting information can be converted to according to the surround lighting collected for the display device possessing the direct translation function of optical information; For the display device not possessing the direct translation function of optical information, light luminance spectrum can be stored in advance in display device storer, brightness Y, the tone I and saturation degree Q corresponding to surround lighting of surrounding can be inquired from light luminance spectrum.
In YIQ color space, the brightness value closest to visual comfort is defined as Benchmark brightness value Y0, Y0 value can be stored in advance in display device storer.Environmentally optical information determines color adjusted value with the Benchmark brightness value Y0 preset; then according to the surround lighting information determination base colors value that real-time weather information and the camera collection of network inquiry acquisition arrive; again according to color adjusted value and base colors value determination optimal colors value; analyze under obtaining current light environment; color and the brightness of human eyesight can be protected, as optimum color and the brightness of the back light of display device closest to human eye comfort level.After determining to need adjustment backlight illumination; backlight adjustment instruction is sent to backlight driving unit; and the best backlight color obtained and best backlight illumination are sent in the lump; backlight driving unit is according to best backlight color and best backlight illumination adjustment back light; make screen backlight brightness and color closer to the human eye comfort level under current luminous environment, be conducive to protecting human eyesight.
The present embodiment adopts the display device being connected with network to obtain local real-time weather information, and adopts the camera of display device to obtain surrounding environment optical information, without the need to increasing the hardware configuration of display device, is conducive to the increase avoiding manufacturing cost; Environmentally optical information and Benchmark brightness value determination color adjusted value; then best backlight color and best backlight illumination is determined according to the surround lighting information of color adjusted value and real-time weather information and surrounding; and adjust back light according to this; screen backlight brightness and color are in course of adjustment more coordinate; thus closer to the human eye comfort level under current luminous environment; Adjustment precision is high, is conducive to protecting human eyesight.
Further, best backlight determination module 30 specifically for:
According to real-time weather information, the three primary colors mode chromatographic that inquiry is preset, obtains the color value (fR, fG, fB) that real-time weather information is corresponding;
Environmentally optical information, determines ambient light color value (hR, hG, hB); Surround lighting information comprises brightness Y, tone I and saturation degree Q;
The color value (fR, fG, fB) corresponding according to real-time weather information and ambient light color value (hR, hG, hB), determine base colors value (R, G, B);
Environmentally the brightness Y of light and the Benchmark brightness value Y0 that presets determines brightness adjustment value Δ Y, and according to the tone I of brightness adjustment value Δ Y, Benchmark brightness value Y0, surround lighting and saturation degree Q, determines hue adjustment value rI and saturation degree adjusted value rQ;
Environmentally brightness Y, the hue adjustment value rI of light and saturation degree adjusted value rQ, determine color adjusted value (rR, rG, rB);
According to base colors value (R, G, B) and color adjusted value (rR, rG, rB), determine best backlight color (LR, LG, LB);
Best backlight illumination LY is defined as Y0, and Y0 is default Benchmark brightness value.
Three primary colors mode chromatographic is stored in display device storer by the present embodiment in advance.Three primary colors pattern, also known as RGB color mode or RGB pattern, is a kind of additive color model, is added by red, green, blue three look, obtains diversified coloured light in different ratios.In three primary colors mode chromatographic, the color value that different real-time weather information is corresponding different, according to sunshine situation, ultraviolet index, weather, temperature, the Weather information such as PM2.5 value, corresponding color value can be found in three primary colors mode chromatographic, such as, temperature 32 DEG C, weather is fine, ultraviolet index 9, corresponding color value is #FF8C00, is converted into red, green, blue three color ratio example for (128,220,100), also just color value can be determined according to one or more combinations in addition.
According to brightness Y, the tone I and saturation degree Q of display device surrounding environment light, adopt following formula determination ambient light color value (hR, hG, hB):
hR＝Y＋0.956×I＋0.623×Q；
hG＝Y－0.272×I－0.648×Q；
hB＝Y－1.105×I＋0.705×Q。
When determining base colors value (R, G, B), the real-time weather situation of surrounding environment residing for display device and locality should be considered, based on the color value closer to visual comfort.The present embodiment is provided with color in advance and weighs threshold value (R0, G0, B0) in display device storer, and the color value of this value and visual comfort relatively, such as, arranges color and weighs threshold value (R0, G0, B0)=(204,232,207).Relatively (hR, hG, hB) and (fR, fG, fB) closer to one of (R0, G0, B0) group in, according to comparative result, adjustment (R, G, B)=(fR, fG, fB) × Wf+(hR, hG, hB) ratio of weights W f and Wh in × Wh, wherein, Wf is the weight of (fR, fG, fB), and Wh is (hR, hG, hB) weight, Wf+Wh=1.When (fR, fG, fB) color value closer to visual comfort, Wf > Wh, when (hR, hG, hB) color value closer to visual comfort, Wh > Wf, the Wf=Wh when both degrees of closeness are equal.
Brightness adjustment value Δ Y=|Y0-Y|, hue adjustment value rI and saturation degree adjusted value rQ can adopt following formula to obtain:
rI＝I＋ΔY/Y0；
rQ＝Q＋ΔY/Y0。
Wherein, | Y0-Y| represents that the difference of Y0 and Y takes absolute value, i.e. brightness adjustment value Δ Y, when Y is less than Y0, Δ Y=|Y0-Y|=Y0-Y; When Y is greater than Y0, Δ Y=|Y0-Y|=Y-Y0; When Y equals Y0, Δ Y=|Y0-Y|=0.Preset reference brightness value can be distributed between [80,230], and the predeterminable Benchmark brightness value Y0 of the present embodiment is 205.
After determining hue adjustment value rI and saturation degree adjusted value rQ, adopt following formula determination color adjusted value (rR, rG, rB):
rR＝Y＋0.956×rI＋0.623×rQ；
rG＝Y－0.272×rI－0.648×rQ；
rB＝Y－1.105×rI＋0.705×rQ。
The best backlight color (LR, LG, LB) of final acquisition is:
（LR，LG，LB）=（R，G，B）+（rR，rG，rB）。
Meanwhile, because Benchmark brightness value Y0 is the brightness value closest to visual comfort, therefore directly best backlight illumination LY can be defined as Y0, adopt Y0 to adjust the brightness of back light as adjustment parameter.
The present embodiment is according to the color value (fR of real-time weather information acquisition, fG, fB) and the environmentally brightness Y, the tone I and saturation degree Q that obtain of optical information, and the adjusted value environmentally between luminance brightness and preset reference brightness value is checked colors and is in harmonious proportion saturation degree and adjusts, then be mapped to color space to adjust color, the best backlight color of pinpoint accuracy and high degrees of coordination and best backlight illumination is obtained with this, screen backlight brightness after adjustment and color are coordinated more, and more close to the human eye comfort level under current luminous environment.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.Through the above description of the embodiments, those skilled in the art can be well understood to the mode that above-described embodiment method can add required general hardware platform by software and realize, hardware can certainly be passed through, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprises some instructions in order to make the method described in each embodiment of a display device equipment (can be mobile phone, PAD, computing machine etc.) execution the present invention.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a method for display device backlight self-adaptative adjustment, is characterized in that, comprises step:
Through the real-time weather information of the Network Capture display device position that display device accesses;
The camera of employing display device obtains the surround lighting around display device, determines surround lighting information;
According to described surround lighting information and the Benchmark brightness value determination color adjusted value preset, and determine best backlight color and best backlight illumination according to described color adjusted value, described real-time weather information and surround lighting information;
The screen backlight of display device is adjusted to described best backlight color and best backlight illumination.
2. the method for display device backlight self-adaptative adjustment as claimed in claim 1, it is characterized in that, described environmentally optical information and the Benchmark brightness value determination color adjusted value preset, and determine that the step of best backlight color and best backlight illumination specifically comprises according to described color adjusted value, described real-time weather information and surround lighting information:
According to described real-time weather information, the three primary colors mode chromatographic that inquiry is preset, obtains the color value (fR, fG, fB) that described real-time weather information is corresponding;
According to described surround lighting information, determine ambient light color value (hR, hG, hB); Described surround lighting information comprises brightness Y, tone I and saturation degree Q;
The color value (fR, fG, fB) corresponding according to described real-time weather information and ambient light color value (hR, hG, hB), determine base colors value (R, G, B);
Determine brightness adjustment value Δ Y according to the brightness Y of described surround lighting and the Benchmark brightness value Y0 that presets, and according to the tone I of described brightness adjustment value Δ Y, Benchmark brightness value Y0, described surround lighting and saturation degree Q, determine hue adjustment value rI and saturation degree adjusted value rQ;
According to brightness Y, hue adjustment value rI and the saturation degree adjusted value rQ of described surround lighting, determine color adjusted value (rR, rG, rB);
According to base colors value (R, G, B) and color adjusted value (rR, rG, rB), determine best backlight color (LR, LG, LB);
Best backlight illumination LY is defined as Y0.
3. the method for display device backlight self-adaptative adjustment as claimed in claim 2, is characterized in that, described color value (fR, the fG corresponding according to real-time weather information, and ambient light color value (hR, hG, hB) fB), determine that the step of base colors value (R, G, B) specifically comprises:
Relatively described (fR, fG, fB) and (hR, hG, hB) levels off to the convergence degree of default color measurement threshold value (R0, G0, B0);
According to convergence degree comparative result, adjustment Wf and Wh size; Wherein, Wf is the weight of (fR, fG, fB), and Wh is the weight of (hR, hG, hB), Wf+Wh=1;
According to the weight after adjustment, determine base colors value (R, G, B)=(fR, fG, fB) × Wf+(hR, hG, hB) × Wh.
4. the method for display device backlight self-adaptative adjustment as claimed in claim 3, is characterized in that, described according to convergence degree comparative result, and the step of adjustment Wf and Wh size specifically comprises:
When described (fR, fG, fB) more levels off to (R0, G0, B0) than (hR, hG, hB), Wf > Wh;
When described (hR, hG, hB) more levels off to (R0, G0, B0) than (fR, fG, fB), Wh > Wf;
When described (hR, hG, hB) and (fR, fG, fB) level off to the convergence degree of (R0, G0, B0) identical time, Wf=Wh.
5. the method for display device backlight self-adaptative adjustment as claimed in claim 4, is characterized in that, described comparison (fR, fG, fB) and (hR, hG, hB) level off to the step of convergence degree of default color measurement threshold value (R0, G0, B0) and specifically comprise:
Relatively | fG-G0| and | the size of hG-G0|;
As | fG-G0| < | during hG-G0|, judge that described (fR, fG, fB) more levels off to (R0, G0, B0) than (hR, hG, hB);
As | fG-G0| > | during hG-G0|, judge that described (hR, hG, hB) more levels off to (R0, G0, B0) than (fR, fG, fB);
When | during fG-G0|=|hG-G0|, compare | fR-R0| and | the size of hR-R0|;
As | fR-R0| < | during hR-R0|, judge that described (fR, fG, fB) more levels off to (R0, G0, B0) than (hR, hG, hB);
As | fR-R0| > | during hR-R0|, judge that described (hR, hG, hB) more levels off to (R0, G0, B0) than (fR, fG, fB);
When | during fR-R0|=|hR-R0|, compare | fB-B0| and | the size of hB-B0|;
As | fB-B0| < | during hB-B0|, judge that described (fR, fG, fB) more levels off to (R0, G0, B0) than (hR, hG, hB);
As | fB-B0| > | during hB-B0|, judge that described (hR, hG, hB) more levels off to (R0, G0, B0) than (fR, fG, fB);
When | during fB-B0|=|hB-B0|, judge that described (hR, hG, hB) and (fR, fG, fB) levels off to the convergence degree of (R0, G0, B0) identical.
6. the method for display device backlight self-adaptative adjustment as claimed in claim 2, is characterized in that, described brightness adjustment value Δ Y=|Y0-Y|;
Described hue adjustment value rI and saturation degree adjusted value rQ adopts following formula to obtain:
rI＝I＋ΔY/Y0；
rQ＝Q＋ΔY/Y0。
7. the method for display device backlight self-adaptative adjustment as claimed in claim 2, it is characterized in that, described color adjusted value (rR, rG, rB) adopts following formula to obtain:
rR＝Y＋0.956×rI＋0.623×rQ；
rG＝Y－0.272×rI－0.648×rQ；
rB＝Y－1.105×rI＋0.705×rQ。
8. the method for display device backlight self-adaptative adjustment as claimed in claim 1, it is characterized in that, described real-time weather information comprises situation at sunshine, weather condition, temperature, ultraviolet index and/or PM2.5 value.
9. a device for display device backlight self-adaptative adjustment, is characterized in that, comprising:
Weather acquisition module, for the real-time weather information of Network Capture display device position accessed through display device;
Surround lighting acquisition module, for adopting the camera of display device to obtain surround lighting around display device, determines surround lighting information;
Best backlight determination module, for according to described surround lighting information and the Benchmark brightness value determination color adjusted value preset, and determines best backlight color and best backlight illumination according to described color adjusted value, described real-time weather information and surround lighting information;
Backlight adjusting module, for being adjusted to described best backlight color and best backlight illumination by the screen backlight of display device.
10. the device of display device backlight self-adaptative adjustment as claimed in claim 9, is characterized in that, described best backlight determination module specifically for:
According to described real-time weather information, the three primary colors mode chromatographic that inquiry is preset, obtains the color value (fR, fG, fB) that described real-time weather information is corresponding;
According to described surround lighting information, determine ambient light color value (hR, hG, hB); Described surround lighting information comprises brightness Y, tone I and saturation degree Q;
The color value (fR, fG, fB) corresponding according to described real-time weather information and ambient light color value (hR, hG, hB), determine base colors value (R, G, B);
Determine brightness adjustment value Δ Y according to the brightness Y of described surround lighting and the Benchmark brightness value Y0 that presets, and according to the tone I of described brightness adjustment value Δ Y, Benchmark brightness value Y0, described surround lighting and saturation degree Q, determine hue adjustment value rI and saturation degree adjusted value rQ;
According to brightness Y, hue adjustment value rI and the saturation degree adjusted value rQ of described surround lighting, determine color adjusted value (rR, rG, rB);
According to base colors value (R, G, B) and color adjusted value (rR, rG, rB), determine best backlight color (LR, LG, LB);
Best backlight illumination LY is defined as Y0, and Y0 is default Benchmark brightness value.
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