CN104460049A - Electronic device and display control method and device - Google Patents

Abstract

The invention discloses an electronic device and a display control method and device and belongs to the technical field of display. The electronic device comprises a light intensity collector, a control chip electrically connected with the light intensity collector and a conductive reflecting coating electrically connected with the control chip. The light intensity collector is used for collecting the environment light intensity. The control chip is used for acquiring the environment light intensity collected by the light intensity collector and generating control signals according to the environment light intensity and a preset corresponding relation. The conductive reflecting coating is in the reflecting state of the corresponding reflection ratio according to the control signals. The environment light intensity is collected and a display screen is adjusted into the reflecting states of different reflection ratios according to the environment light intensity, so that the problems that the resolution and the definition of an electronic product are lowered and the application range of the electronic product is small according to the existing anti-dazzling technology are solved, the display screen is dynamically adjusted into the reflecting states of different reflection ratios, the intensity of reflected light is controlled, and the anti-dazzling effect is achieved.

Description

Electronic equipment, display control method and display control unit

Technical field

The present invention relates to display technique field, particularly a kind of electronic equipment, display control method and display control unit.

Background technology

Dazzle refers to owing to being not suitable for Luminance Distribution in the visual field, or in space or exist extreme brightness contrast the time, so that causes vision uncomfortable and reduce the visual condition of object visibility.Such as, under high light, use computer, the light sensation that human eye cannot adapt to can be produced in the visual field, dazzle that Here it is.By environment high light, at eyeglass or touch-screen etc., other produce caused by reflection on the surface in dazzle.Dazzle can cause user to produce visual fatigue, and serious may cause detest, discomfort and cannot see surrounding environment object clearly.

Existing anti-dazzle technology has etching and processing or film to process two kinds of methods, its principle is all make other smooth surfaces such as eyeglass or touch-screen produce trickle concaveconvex shape, become rough rough surface, thus reflected light is become diffuse reflection, reach the reflection ray reduced in the visual field, reduce the effect of light sensation.

Realizing in process of the present invention, inventor finds that prior art at least exists following problem:

First, no matter be etching and processing or film processing, its processing technology is very complicated, and the height size differences of the projection produced and depression is larger, even the product of same batch is also difficult to reach identical anti-dazzle effect, this also causes the difference of the display effect between product;

Second, if when ambient light by force, does not produce dazzle, especially for some electronic products, the concaveconvex shape of its display screen surface can reduce its resolution and sharpness, affect display effect, so existing anti-dazzle technology is only applicable to work out of doors and does not need very high-resolution product always, range of application is extensive not.

Summary of the invention

Reducing electronic product resolution and sharpness to solve existing anti-dazzle technology, affecting its display effect and the little problem of range of application, embodiments providing a kind of anti-dazzle electronic equipment, method and apparatus.Described technical scheme is as follows:

First aspect, provides a kind of electronic equipment, and described electronic equipment, comprising:

Intensity collection device, the control chip be electrical connected with described intensity collection device and the conduction reflecting coating be electrical connected with described control chip;

Described intensity collection device, for gathering environmental light intensity;

Described control chip, for obtaining the described environmental light intensity that described intensity collection device gathers; Control signal is generated according to described environmental light intensity and predetermined corresponding relation, described predetermined corresponding relation is the corresponding relation between varying environment light intensity from different control signal, and different control signals is in the reflective condition of different reflectivity for controlling described conduction reflecting coating;

Described conduction reflecting coating, for being in the reflective condition of corresponding reflectivity according to described control signal.

Second aspect, provides a kind of display control method, and in electronic equipment as described in relation to the first aspect, described method comprises:

Obtain the environmental light intensity that intensity collection device gathers;

Control signal is generated according to described environmental light intensity and predetermined corresponding relation, described predetermined corresponding relation is the corresponding relation between varying environment light intensity from different control signal, and different control signals is in the reflective condition of different reflectivity for controlling conduction reflecting coating.

The third aspect, provides a kind of display control unit, and in electronic equipment as described in relation to the first aspect, described device comprises:

Light intensity acquisition module: for obtaining the environmental light intensity that intensity collection device gathers;

Signal generation module: generate control signal for the described environmental light intensity that gets according to described light intensity acquisition module and predetermined corresponding relation, described predetermined corresponding relation is the corresponding relation between varying environment light intensity from different control signal, and different control signals is in the reflective condition of different reflectivity for controlling conduction reflecting coating.

The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:

By gathering environmental light intensity, and environmentally light intensity regulating display screen is in the reflective condition of different reflectivity; Solve existing anti-dazzle technology and reduce electronic product resolution and sharpness, affect its display effect and the little problem of range of application; Reach do not reduce electronic product resolution and sharpness, do not affect electronic product display effect prerequisite under, dynamic adjustments display screen is in the reflective condition of different reflectivity, thus control the intensity of reflected light, reach the effect of anti-dazzle, reach the effect enabling this anti-glare method widespread use simultaneously.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the structural representation of the electronic equipment that one embodiment of the invention provides;

Fig. 2 is the structural representation of the electronic equipment that another embodiment of the present invention provides;

Fig. 3 is the method flow diagram of the display control method that one embodiment of the invention provides;

Fig. 4 is the method flow diagram of the display control method that another embodiment of the present invention provides;

Fig. 5 is the block diagram of the display control unit that one embodiment of the invention provides;

Fig. 6 is the block diagram of the display control unit that another embodiment of the present invention provides.

Embodiment

For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.

Please refer to Fig. 1, it illustrates the structural representation of the electronic equipment that one embodiment of the invention provides.This electronic equipment can be the equipment of mobile phone, panel computer, notebook computer, desktop computer, televisor or handheld device and so on.This electronic equipment, comprising: intensity collection device 102, the control chip 104 be electrical connected with intensity collection device 102 and the conduction reflecting coating 106 be electrical connected with control chip 104;

Intensity collection device 102, for gathering environmental light intensity;

Control chip 104, for obtaining the environmental light intensity that intensity collection device 102 gathers; Environmentally light intensity and predetermined corresponding relation generate control signal, and this predetermined corresponding relation is the corresponding relation between varying environment light intensity from different control signal, and different control signals is in the reflective condition of different reflectivity for controlling conduction reflecting coating 106;

Conduction reflecting coating 106, for being in the reflective condition of corresponding reflectivity according to control signal.

In sum, the electronic equipment that the present embodiment provides, by gathering environmental light intensity, and environmentally light intensity regulating display screen is in the reflective condition of different reflectivity; Solve existing anti-dazzle technology and reduce electronic product resolution and sharpness, affect its display effect and the little problem of range of application; Reach do not reduce electronic product resolution and sharpness, do not affect electronic product display effect prerequisite under, dynamic adjustments display screen is in the reflective condition of different reflectivity, thus control the intensity of reflected light, reach the effect of anti-dazzle, reach the effect enabling this anti-glare method widespread use simultaneously.

Please refer to Fig. 2, it illustrates the structural representation of the electronic equipment that another embodiment of the present invention provides.This electronic equipment can be the equipment of mobile phone, panel computer, notebook computer, desktop computer, televisor or handheld device and so on.This electronic equipment, comprising: intensity collection device 102, the control chip 104 be electrical connected with intensity collection device 102, the conduction reflecting coating 106 be electrical connected with control chip 104 and display screen 107.Electronic equipment can also comprise the parts such as housing, battery, mainboard, camera or touch-screen.

Intensity collection device 102, for gathering environmental light intensity;

Intensity collection device 102 can perception gather environmental light intensity, then environmental light intensity is sent to control chip 104.Intensity collection device 102 can be light sensor, also can be replaced by the camera of electronic equipment.

Specifically, if light sensor, then generally to be made up of light projector, light-receiving device and reception inductor three parts, utilize light projector by light by lens by it focusing, through transferring to the lens of light-receiving device, again to receiving inductor, receive inductor and the light signal received is transformed into electric signal, this electric signal is for representing environmental light intensity.

If replaced by the camera of electronic equipment, then camera can be utilized to take pictures in this context, carrying out analysis through control chip 104 to this photo can obtain environmental light intensity.

Control chip 104, for obtaining the environmental light intensity that intensity collection device 102 gathers, environmentally light intensity and predetermined corresponding relation generate control signal.

Predetermined corresponding relation is the power of environmental light intensity is negative correlativing relation with the height of the reflectivity of conduction reflecting coating 106.Environmental light intensity is stronger, and control signal controls the reflective condition that conduction reflecting coating 106 is in more antiradar reflectivity.Accordingly, environmental light intensity is more weak, and control signal controls the reflective condition that conduction reflecting coating 106 is in more high reflectance.

Preferably, predetermined corresponding relation is continuous print subtraction function y=f(x), x is environmental light intensity, and y is the reflectivity of conduction reflecting coating.When environmental light intensity changes in real time, the reflectivity of conduction reflecting coating 106 also can make corresponding change thereupon.

Or predetermined corresponding relation is the piecewise function y=f(x in decline state), x is environmental light intensity, and y is the reflectivity of conduction reflecting coating.The segment being divided into several different environmental light intensity, each segment corresponds to a reflectivity.When environmental light intensity changes in a certain segment, reflectivity can not change; And when environmental light intensity to rise from segment or when dropping to another segment, reflectivity can change thereupon.

Conduction reflecting coating 106, for being in the reflective condition of corresponding reflectivity according to control signal;

Produce electric field after conduction reflecting coating 106 is energized, control molecules align and the structure of display screen 107 according to control signal, thus be in the reflective condition of corresponding reflectivity.

Conduction reflecting coating 106 is arranged at the upper surface of the display screen 107 of electronic equipment; Or conduction reflecting coating 106 is arranged at the lower surface of the display screen 107 of electronic equipment; Or conduction reflecting coating 107 becomes one with the display screen of electronic equipment.Conventional conduction reflecting coating has AGAS(Anti-GlareAnti-Static, anti glare anti static coatings electrostatic prevention) coating, ARAS(Anti-Reflection Anti-Static, antireflection electrostatic prevention) coating and UC(Ultra Clear, super clear) coating etc., custom-designed coating can be had in addition.

It should be noted that still can have good display effect to make electronic equipment when environmental light intensity is normal or on the low side.Control chip 104, also for testing environment light intensity whether lower than predetermined threshold.If testing result is lower than predetermined threshold, then controls conduction reflecting coating 106 and quit work.The display screen 107 of electronic equipment recovers the reflective condition of itself.Like this, just can ensure that this electronic equipment is under various environmental light intensity, can both reach good display effect, not reduce its resolution and sharpness.

In sum, the electronic equipment that the present embodiment provides, by gathering environmental light intensity, and environmentally light intensity regulating display screen is in the reflective condition of different reflectivity; Solve existing anti-dazzle technology and reduce electronic product resolution and sharpness, affect its display effect and the little problem of range of application; Reach do not reduce electronic product resolution and sharpness, do not affect electronic product display effect prerequisite under, dynamic adjustments display screen is in the reflective condition of different reflectivity, thus controls the intensity of reflected light, reaches the effect of anti-dazzle.

The present embodiment is also by a certain predetermined threshold of setting, and when environmental light intensity is lower than this predetermined threshold, conduction reflecting coating quits work, and the display screen of electronic equipment recovers the reflective condition of itself.Like this, just can ensure that this electronic equipment is under various environmental light intensity, can both reach good display effect, not reduce the effect of its resolution and sharpness.

Please refer to Fig. 3, it illustrates the method flow diagram of the display control method that one embodiment of the invention provides.This display control method is used in the control chip of the electronic equipment provided based on various embodiments of the present invention.This display control method, comprising:

Step 302, obtains the environmental light intensity that intensity collection device gathers;

Step 304, environmentally light intensity and predetermined corresponding relation generate control signal, predetermined corresponding relation is the corresponding relation between varying environment light intensity from different control signal, and different control signals is in the reflective condition of different reflectivity for controlling conduction reflecting coating.

In sum, the display control method that the present embodiment provides, by gathering environmental light intensity, and environmentally light intensity regulating display screen is in the reflective condition of different reflectivity; Solve existing anti-dazzle technology and reduce electronic product resolution and sharpness, affect its display effect and the little problem of range of application; Reach do not reduce electronic product resolution and sharpness, do not affect electronic product display effect prerequisite under, dynamic adjustments display screen is in the reflective condition of different reflectivity, thus control the intensity of reflected light, reach the effect of anti-dazzle, reach the effect enabling this anti-glare method widespread use simultaneously.

Please refer to Fig. 4, it illustrates the method flow diagram of the display control method that another embodiment of the present invention provides.This display control method is still in the control chip of electronic equipment that provides based on various embodiments of the present invention.This display control method, comprising:

Step 401, obtains the environmental light intensity that intensity collection device gathers;

Control chip obtains the environmental light intensity that intensity collection device gathers.Intensity collection device can perception gather environmental light intensity, then environmental light intensity is sent to control chip, accordingly, and the environmental light intensity that control chip receiving light power collector gathers.

Step 402, whether testing environment light intensity is lower than predetermined threshold;

Whether control chip testing environment light intensity is lower than predetermined threshold.This predetermined threshold is by after test, sets for making electronic product all can reach good display effect under varying environment light intensity.When environmental light intensity is lower than this predetermined threshold, electronic equipment display screen surface can not produce dazzle, then do not need accommodation reflex rate, only need recover the original reflective condition of electronic equipment display screen.

Step 403, if testing result is lower than predetermined threshold, then controls conduction reflecting coating and quits work;

If testing result is lower than predetermined threshold, then control chip control conduction reflecting coating quits work.When environmental light intensity is lower than this predetermined threshold, electronic equipment display screen surface can not produce dazzle, then do not need accommodation reflex rate, only need recover the original reflective condition of electronic equipment display screen.Like this, just can ensure that this electronic equipment is under various environmental light intensity, can both reach good display effect, not reduce its resolution and sharpness.

Step 404, if testing result is for being not less than predetermined threshold, then environmentally light intensity and predetermined corresponding relation generate control signal.

If testing result is for being not less than predetermined threshold, then environmentally light intensity and predetermined corresponding relation generate control signal to control chip.Predetermined corresponding relation is the power of environmental light intensity is negative correlativing relation with the height of the reflectivity of conduction reflecting coating.

Predetermined corresponding relation is continuous print subtraction function y=f(x), x is environmental light intensity, and y is the reflectivity of conduction reflecting coating.When environmental light intensity changes in real time, the reflectivity of conduction reflecting coating 106 also can make corresponding change thereupon.

Or predetermined corresponding relation is the piecewise function y=f(x in decline state), x is environmental light intensity, and y is the reflectivity of conduction reflecting coating.The segment being divided into several different environmental light intensity, each segment corresponds to a reflectivity.When environmental light intensity changes in a certain segment, reflectivity can not change; And when environmental light intensity to rise from segment or when dropping to another segment, reflectivity can change thereupon.

The corresponding relation between varying environment light intensity and different reflectivity is prestored in control chip.After detecting the environmental light intensity got, if this environmental light intensity is not less than predetermined threshold, then needs to produce control signal and control the reflective condition that conduction reflecting coating is in different reflectivity.

In sum, the display control method that the present embodiment provides, by gathering environmental light intensity, and environmentally light intensity regulating display screen is in the reflective condition of different reflectivity; Solve existing anti-dazzle technology and reduce electronic product resolution and sharpness, affect its display effect and the little problem of range of application; Reach do not reduce electronic product resolution and sharpness, do not affect electronic product display effect prerequisite under, dynamic adjustments display screen is in the reflective condition of different reflectivity, thus control the intensity of reflected light, reach the effect of anti-dazzle, reach the effect enabling this anti-glare method widespread use simultaneously.The present embodiment is also by a certain predetermined threshold of setting, and when environmental light intensity is lower than this predetermined threshold, conduction reflecting coating quits work, and the display screen of electronic equipment recovers the reflective condition of itself.Like this, just can ensure that this electronic equipment is under various environmental light intensity, can both reach good display effect, not reduce the effect of its resolution and sharpness.

Be below device embodiment of the present invention, the details of not detailed description in device embodiment, can with reference to the embodiment of the method for above-mentioned correspondence.

Please refer to Fig. 5, it illustrates the block diagram of the display control unit that one embodiment of the invention provides.This display control unit can by software, hardware or both be combined into the whole or a part of of the control chip of electronic equipment.This display control unit, comprising: light intensity acquisition module 510 and signal generation module 520.

Light intensity acquisition module 510, for obtaining the environmental light intensity that intensity collection device gathers;

Signal generation module 520, control signal is generated for the environmental light intensity that gets according to light intensity acquisition module 510 and predetermined corresponding relation, this predetermined corresponding relation is the corresponding relation between varying environment light intensity from different control signal, and different control signals is in the reflective condition of different reflectivity for controlling conduction reflecting coating.

In sum, the display control unit that the present embodiment provides, by gathering environmental light intensity, and environmentally light intensity regulating display screen is in the reflective condition of different reflectivity; Solve existing anti-dazzle technology and reduce electronic product resolution and sharpness, affect its display effect and the little problem of range of application; Reach do not reduce electronic product resolution and sharpness, do not affect electronic product display effect prerequisite under, dynamic adjustments display screen is in the reflective condition of different reflectivity, thus control the intensity of reflected light, reach the effect of anti-dazzle, reach the effect enabling this anti-glare method widespread use simultaneously.

Please refer to Fig. 6, it illustrates the block diagram of the display control unit that another embodiment of the present invention provides.This display control unit can by software, hardware or both be combined into the whole or a part of of the control chip of electronic equipment.This display control unit, comprising: light intensity acquisition module 510, light-intensity test module 512, coating control module 514 and signal generation module 520.

Light intensity acquisition module 510, for obtaining the environmental light intensity that intensity collection device gathers;

Whether light-intensity test module 512, for testing environment light intensity lower than predetermined threshold;

Coating control module 514, if be lower than predetermined threshold for the testing result of light-intensity test module 512, then control conduction reflecting coating and quits work;

Signal generation module 520, control signal is generated for the environmental light intensity that gets according to light intensity acquisition module 510 and predetermined corresponding relation, predetermined corresponding relation is the corresponding relation between varying environment light intensity from different control signal, and different control signals is in the reflective condition of different reflectivity for controlling conduction reflecting coating.

Predetermined corresponding relation is the power of environmental light intensity is negative correlativing relation with the height of the reflectivity of conduction reflecting coating.Predetermined corresponding relation is continuous print subtraction function y=f(x), x is environmental light intensity, and y is the reflectivity of conduction reflecting coating; Or predetermined corresponding relation is the piecewise function y=f(x in decline state), x is environmental light intensity, and y is the reflectivity of conduction reflecting coating.

In sum, the display control unit that the present embodiment provides, by gathering environmental light intensity, and environmentally light intensity regulating display screen is in the reflective condition of different reflectivity; Solve existing anti-dazzle technology and reduce electronic product resolution and sharpness, affect its display effect and the little problem of range of application; Reach do not reduce electronic product resolution and sharpness, do not affect electronic product display effect prerequisite under, dynamic adjustments display screen is in the reflective condition of different reflectivity, thus control the intensity of reflected light, reach the effect of anti-dazzle, reach the effect enabling this anti-glare method widespread use simultaneously.The present embodiment is also by a certain predetermined threshold of setting, and when environmental light intensity is lower than this predetermined threshold, conduction reflecting coating quits work, and the display screen of electronic equipment recovers the reflective condition of itself.Like this, just can ensure that this electronic equipment is under various environmental light intensity, can both reach good display effect, not reduce the effect of its resolution and sharpness.

Should be understood that, use in this article, unless context clearly supports exception, singulative " " (" a ", " an ", " the ") is intended to also comprise plural form.It is to be further understood that the "and/or" used in this article refers to comprise any of more than one or one project listed explicitly and likely combine.

The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.

One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be ROM (read-only memory), disk or CD etc.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (13)

1. an electronic equipment, is characterized in that, described electronic equipment, comprising:

Intensity collection device, the control chip be electrical connected with described intensity collection device and the conduction reflecting coating be electrical connected with described control chip;

Described intensity collection device, for gathering environmental light intensity;

Described control chip, for obtaining the described environmental light intensity that described intensity collection device gathers; Control signal is generated according to described environmental light intensity and predetermined corresponding relation, described predetermined corresponding relation is the corresponding relation between varying environment light intensity from different control signal, and different control signals is in the reflective condition of different reflectivity for controlling described conduction reflecting coating;

Described conduction reflecting coating, for being in the reflective condition of corresponding reflectivity according to described control signal.

2. electronic equipment according to claim 1, is characterized in that,

Described control chip, also for whether detecting described environmental light intensity lower than predetermined threshold; If testing result is lower than described predetermined threshold, then controls described conduction reflecting coating and quit work.

3. electronic equipment according to claim 1 and 2, is characterized in that, described predetermined corresponding relation is the height of the power of described environmental light intensity and the reflectivity of described conduction reflecting coating is negative correlativing relation.

4. electronic equipment according to claim 3, is characterized in that,

Described predetermined corresponding relation is continuous print subtraction function y=f(x), described x is described environmental light intensity, and described y is the reflectivity of described conduction reflecting coating;

Or,

Described predetermined corresponding relation is the piecewise function y=f(x in decline state), described x is described environmental light intensity, and described y is the reflectivity of described conduction reflecting coating.

5. electronic equipment according to claim 1 and 2, is characterized in that,

Described conduction reflecting coating is arranged at the upper surface of the display screen of described electronic equipment; Or,

Described conduction reflecting coating is arranged at the lower surface of the display screen of described electronic equipment; Or,

The display screen of described conduction reflecting coating and described electronic equipment becomes one.

6. a display control method, is characterized in that, in electronic equipment as claimed in claim 1, described method comprises:

Obtain the environmental light intensity that intensity collection device gathers;

Control signal is generated according to described environmental light intensity and predetermined corresponding relation, described predetermined corresponding relation is the corresponding relation between varying environment light intensity from different control signal, and different control signals is in the reflective condition of different reflectivity for controlling conduction reflecting coating.

7. display control method according to claim 6, is characterized in that, described according to before described environmental light intensity and predetermined corresponding relation generation control signal, also comprises:

Whether detect described environmental light intensity lower than predetermined threshold;

If testing result is lower than described predetermined threshold, then controls described conduction reflecting coating and quit work.

8. the display control method according to claim 6 or 7, is characterized in that, described predetermined corresponding relation is the height of the power of described environmental light intensity and the reflectivity of described conduction reflecting coating is negative correlativing relation.

9. display control method according to claim 8, is characterized in that,

Described predetermined corresponding relation is continuous print subtraction function y=f(x), described x is described environmental light intensity, and described y is the reflectivity of described conduction reflecting coating;

Or,

Described predetermined corresponding relation is the piecewise function y=f(x in decline state), described x is described environmental light intensity, and described y is the reflectivity of described conduction reflecting coating.

10. a display control unit, is characterized in that, in electronic equipment as claimed in claim 1, described device comprises:

Light intensity acquisition module, for obtaining the environmental light intensity that intensity collection device gathers;

Signal generation module, control signal is generated for the described environmental light intensity that gets according to described light intensity acquisition module and predetermined corresponding relation, described predetermined corresponding relation is the corresponding relation between varying environment light intensity from different control signal, and different control signals is in the reflective condition of different reflectivity for controlling conduction reflecting coating.

11. display control units according to claim 10, is characterized in that, described display control unit, also comprises:

Whether light-intensity test module, for detecting described environmental light intensity lower than predetermined threshold;

Coating control module, if be lower than described predetermined threshold for the testing result of described light-intensity test module, then control described conduction reflecting coating and quits work.

12. display control units according to claim 10 or 11, it is characterized in that, described predetermined corresponding relation is the height of the power of described environmental light intensity and the reflectivity of described conduction reflecting coating is negative correlativing relation.

13. display control units according to claim 12, is characterized in that,

Described predetermined corresponding relation is continuous print subtraction function y=f(x), described x is described environmental light intensity, and described y is the reflectivity of described conduction reflecting coating;

Or,

Described predetermined corresponding relation is the piecewise function y=f(x in decline state), described x is described environmental light intensity, and described y is the reflectivity of described conduction reflecting coating.