CN114299887B - Method, system, control device and display for controlling blue light of display screen - Google Patents
Method, system, control device and display for controlling blue light of display screen Download PDFInfo
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- CN114299887B CN114299887B CN202111643363.3A CN202111643363A CN114299887B CN 114299887 B CN114299887 B CN 114299887B CN 202111643363 A CN202111643363 A CN 202111643363A CN 114299887 B CN114299887 B CN 114299887B
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Abstract
The invention discloses a method, a system, a control device and a display for controlling blue light of a display screen of the display, wherein the method comprises the following steps: acquiring illuminance information of a display screen; generating a blue light hazard index according to the acquired illuminance information; and comparing the blue light hazard index with a preset safety value, and reducing the blue light hazard index of the display screen when the blue light hazard index is higher than the preset safety value. By comparing the blue light hazard index with the preset safety value, the blue light hazard index of the display screen is reduced when the blue light hazard index is higher than the preset safety value, so that the aim of reducing blue light is fulfilled.
Description
Technical Field
The invention belongs to the technical field of displays, and particularly relates to a method and a system for controlling blue light of a display screen of a display, a control device and the display.
Background
The medical display in the display is a special display specially used in the medical field, and has the characteristic of high brightness compared with other displays, for example, the brightness of a medical display screen can reach 1000cd/m 2 The white light LED backlight source is adopted for the current medical display screen, the principle of the white light LED backlight source for manufacturing white light for the screen is that blue light emitted by a blue light LED chip firstly excites yellowish fluorescent powder to generate yellow green light or red light, then the yellow green light or red light is mixed with the rest blue light of the chip to form white light, a blue light peak exists between 415 and 485nm in spectrum, and the higher the brightness of the medical display screen is, the more high-energy blue light is, and the damage to human eyes is greater.
At present, the blue light prevention of the screen has software-level prevention, such as changing the display background of yellow green. There is also hardware-level prevention, such as changing the material or structure of the display screen, but using both prevention methods, the hazard of blue light cannot be directly perceived from the data level or whether the user cannot directly perceive from the data level that the blue light is reduced, and corresponding defensive measures cannot be actively adopted to reduce the damage of the blue light of the display screen to the user. The blue light preventing effect of the screen needs to be measured by professional equipment, however, purchasing the professional measuring equipment brings a series of problems of economic cost improvement and complicated technical operation.
Based on this, the prior art still remains to be improved.
Disclosure of Invention
In order to solve the technical problems, an embodiment of the invention provides a method, a system, a control device and a display for controlling blue light of a display screen, which are used for solving the problem that the blue light of the display screen cannot be reduced to reduce the damage of the blue light in the prior art.
According to an aspect of the present invention, an embodiment of the present invention discloses a method for controlling blue light of a display screen of a display, including the steps of:
acquiring illuminance information of a display screen;
generating a blue light hazard index according to the acquired illuminance information;
and comparing the blue light hazard index with a preset safety value, and reducing the blue light hazard index of the display screen when the blue light hazard index is higher than the preset safety value.
According to one embodiment of the present invention, the acquiring illuminance information of the display screen includes acquiring illuminance information of a back surface of the display screen.
According to one embodiment of the invention, a light supplementing lamp is arranged on the display; said reducing said blue hazard index of said display screen comprises: controlling the light supplementing lamp to be turned on; and/or the number of the groups of groups,
said reducing said blue hazard index of said display screen comprises: and reducing the backlight brightness of the display screen.
According to one embodiment of the invention, the method further comprises: when the blue light hazard index is higher than the preset safety value, selecting the mode for reducing the blue light hazard index of the display screen according to the information to be displayed,
if the influence of the backlight change on the display precision of the information to be displayed is small, selecting a mode of reducing the backlight brightness of the display screen to reduce the blue light hazard index of the display screen;
and if the backlight change has a great influence on the display precision of the information to be displayed, selecting a mode for controlling the light supplementing lamp to be turned on to reduce the blue light hazard index of the display screen.
According to one embodiment of the invention, after the blue light hazard index is generated according to the acquired illuminance information, the generated blue light hazard index is sent to the display screen to be displayed.
According to one embodiment of the invention, the method further comprises: after the light supplementing lamp is controlled to be turned on to reduce the blue light hazard index of the display screen, acquiring illuminance information of the front face of the display screen, and generating a new blue light hazard index according to the acquired illuminance information of the front face of the display screen; or (b)
After the backlight brightness of the display screen is reduced to reduce the blue light hazard index of the display screen, obtaining illuminance information on the back surface of the display screen, and generating a new blue light hazard index according to the obtained illuminance information on the back surface of the display screen;
the steps are then repeated: and comparing the blue light hazard index with a preset safety value.
According to another aspect of the present invention, an embodiment of the present invention discloses a system for controlling blue light of a display screen of a display, including:
the acquisition module is used for acquiring illuminance information of the display screen;
the control module is used for receiving the illuminance information from the acquisition module; generating a blue light hazard index according to the received illuminance information; the generated blue light hazard index is sent to a display screen for display; and comparing the blue light hazard index with a preset safety value, and reducing the blue light hazard index of the display screen when the blue light hazard index is higher than the preset safety value.
According to one embodiment of the invention, the system further comprises:
the light supplementing module is used for controlling the light supplementing module to reduce the blue light hazard index of the display screen; and/or the number of the groups of groups,
and the adjusting module is used for adjusting the backlight brightness of the display screen so as to reduce the blue light hazard index of the display screen.
According to another aspect of the present invention, an embodiment of the present invention discloses a display, including:
a display screen;
the spectrum sensor is used for acquiring illuminance information of the display screen;
the controller is used for generating a blue light hazard index according to the acquired illuminance information; the generated blue light hazard index is sent to a display screen for display; comparing the blue light hazard index with a preset safety value, and reducing the blue light hazard index of the display screen when the blue light hazard index is higher than the preset safety value;
a light supplement lamp disposed on the display, the reducing the blue hazard index of the display screen comprising: and controlling the light supplementing lamp to be turned on.
According to another aspect of the present invention, an embodiment of the present invention discloses a control device for controlling blue light of a display screen of a display, which is characterized by comprising:
a processor;
a memory storing a computer program executable on the processor, wherein the processor performs the method of any of the embodiments described above when the program is executed.
According to the method for controlling the blue light of the display screen of the display, provided by the embodiment of the invention, the blue light hazard index is generated according to the illuminance information of the display screen, and is compared with the preset safety value, and when the blue light hazard index is higher than the preset safety value, the blue light hazard index of the display screen is reduced, so that the damage of the blue light of the display screen to a user is greatly reduced, and the user experience is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flowchart of a method for controlling blue light of a display screen of a display according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a system for controlling blue light of a display screen of a display according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a display according to an embodiment of the invention;
FIG. 4 is a simplified diagram of a front and back structure of a display according to an embodiment of the present invention;
FIG. 5 is a flowchart of a method for controlling blue light of a display screen of a display according to another embodiment of the present invention;
FIG. 6 is a light source spectrum diagram of a light compensating lamp that is not turned on by a display screen in the method for controlling blue light of the display screen according to the embodiment of the invention;
FIG. 7 is a spectrum diagram of an individual light source of a light supplement lamp according to an embodiment of the present invention;
fig. 8 is a spectrum diagram of a mixed light source after a light supplementing lamp is turned on by a display screen in the method for controlling blue light of the display screen according to the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
It should be noted that, in the embodiments of the present invention, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present invention, and the following embodiments are not described one by one.
The following description will take a medical display as an example to describe a specific implementation manner of the method for controlling blue light of a display screen provided by the present invention, and it is understood that the method for controlling blue light of a display screen protected by the present invention is not limited to a medical display, and is also applicable to other displays.
Based on the above object, in a first aspect of the embodiments of the present invention, a method for controlling blue light on a display screen of a display is provided, as shown in fig. 1, including the following steps:
s10: acquiring illuminance information of a display screen;
s20: generating a blue light hazard index according to the acquired illuminance information;
s30: and comparing the blue light hazard index with a preset safety value, and reducing the blue light hazard index of the display screen when the blue light hazard index is higher than the preset safety value.
In some embodiments, obtaining and outputting illuminance information of the display screen includes obtaining and outputting illuminance information of a back surface of the display screen.
Specifically, the calculation mode for generating the blue light hazard index according to the illuminance information may be: acquiring spectral radiance L of display screen according to illuminance information λ And introducing a blue light hazard weighting function B (lambda) to define blue light hazard weighted radiance L B For spectral radiance L λ Weighted integral post magnitude with blue hazard weighting function B (lambda) in W.m -2 ·sr -1 The calculation formula is shown in formula (1): wherein L is λ The unit is W.sr, which is the spectral radiance -1 ·m -2 ·nm -1 The method comprises the steps of carrying out a first treatment on the surface of the B (λ) is the blue hazard weighting function, λ is the wavelength in nm. Definition of blue hazard weighted radiance L B The ratio of the light quantity to the corresponding light quantity is blue hazard index K B，V The method comprises the steps of carrying out a first treatment on the surface of the The calculation formula is shown in formula (2), and represents the relative magnitude, K, of the blue light component in the display screen light source B，V The larger the hazard to the eye, the greater.
Further, the method for controlling the blue light of the display screen of the display further comprises the following steps: after generating the blue light hazard index according to the acquired illuminance information, the generated blue light hazard index is sent to a display screen for display, so that a user can feel the blue light hazard directly.
In some embodiments, the method of controlling display screen blue light of a display further comprises: a light supplementing lamp is arranged on the display; reducing the blue hazard index of the display screen includes: controlling the light supplementing lamp to be turned on; and/or reducing the blue hazard index of the display screen comprises: the backlight brightness of the display screen is reduced.
Specifically, the blue light hazard index of the display screen is reduced by actively starting a light supplementing lamp for supplementing a light source of the display screen or reducing the backlight brightness of the display screen, so that a user does not need to manually operate to control the blue light, the automatic control and adjustment of the blue light of the display screen are realized, and the operation is simple and intelligent. In other embodiments, the reduction of the blue light hazard index of the display screen may be to selectively turn on a light supplement lamp for supplementing the light source of the display screen or reduce the backlight brightness of the display screen through an input module, for example, the input module may be an OSD key module disposed on the display or a selection window popped up by the display, so that the user selects a manner of controlling the blue light according to the usage scenario, thereby improving the user experience.
Further, the method further comprises: when the blue light hazard index is higher than the preset safety value, selecting a mode for reducing the blue light hazard index of the display screen according to the information to be displayed, and if the influence of backlight change on the display precision of the information to be displayed is small, selecting a mode for reducing the backlight brightness of the display screen to reduce the blue light hazard index of the display screen; and if the backlight change has a great influence on the display precision of the information to be displayed, selecting a mode for controlling the light supplementing lamp to be turned on to reduce the blue light hazard index of the display screen.
Specifically, when the blue light hazard index is higher than a preset safety value and the influence of backlight variation on the display precision of the information to be displayed is large, for example, when a medical image is watched on a medical display, a light supplementing lamp is started to reduce the blue light hazard index of the display screen; when the blue light hazard index is higher than a preset safety value and the influence of backlight variation on the display precision of the information to be displayed is small, such as when a non-medical image is watched on a medical display, the backlight brightness of the display screen is reduced to reduce the blue light hazard index of the display screen.
In some embodiments, the controlling the light supplement lamp to turn on to reduce the blue light hazard index of the display screen further includes obtaining illuminance information on the front surface of the display screen; generating a new blue light hazard index according to illuminance information on the front surface of the display screen and sending the new blue light hazard index to the display screen for display; the steps are then repeated: the blue hazard index is compared to a preset safety value. In other embodiments, the light supplementing lamp is arranged outside the display screen, the light supplementing lamp is configured to be an ultraviolet chip for exciting the LED lamp, the LED lamp is excited by the configured ultraviolet chip to supplement the light source, the light source generated by the ultraviolet chip for exciting the LED lamp meets the light source of the medical display, the conditions of spectrum superposition and energy neutralization can occur, the peak of the blue spectrum in the finally obtained light source is obviously reduced, and the whole light source is close to the full spectrum of natural light. After the light supplementing lamp is turned on, illuminance information on the front face of the display screen is collected again and analyzed to obtain a blue light hazard index, a user can intuitively see the change of the blue light hazard index before and after defensive measures are taken, the user can intuitively feel the reduction of the blue light, and user experience is improved.
In some embodiments, after reducing the backlight brightness of the display screen to reduce the blue hazard index of the display screen, obtaining illuminance information on the back surface of the display screen; generating a new blue light hazard index according to illuminance information on the back of the display screen and sending the new blue light hazard index to the display screen for display; the steps are then repeated: the blue hazard index is compared to a preset safety value. Namely, after the backlight brightness of the display screen is reduced, the illuminance information on the back surface of the display screen is acquired again and analyzed to obtain the blue light hazard index, a user can intuitively see the change of the blue light hazard index before and after the defensive measures are taken, the user can intuitively feel the reduction of the blue light, and the user experience is improved.
According to the method for controlling the blue light of the display screen of the display, provided by the embodiment, the blue light hazard index is generated according to the illuminance information by acquiring and outputting the illuminance information of the display screen, and the generated blue light hazard index is sent to the display screen for display, so that a user can feel the hazard of the blue light conveniently and directly, further, the magnitude of the blue light hazard index and the preset safety value is judged, and when the blue light hazard index is higher than the preset safety value, active defense measures are adopted to reduce the hazard of the blue light, and the user experience is improved.
In view of the above object, a second aspect of the embodiments of the present invention provides a system for controlling blue light of a display screen of a display, as shown in fig. 2, including an obtaining module, configured to obtain illuminance information of the display screen; the control module is used for receiving the illuminance information from the acquisition module; generating a blue light hazard index according to the received illuminance information; the generated blue light hazard index is sent to a display screen for display; and comparing the blue light hazard index with a preset safety value, and reducing the blue light hazard index of the display screen when the blue light hazard index is higher than the preset safety value.
In some embodiments, a system for controlling display screen blue light of a display further comprises: the light supplementing module is used for controlling the light supplementing module to reduce the blue light hazard index of the display screen; and/or the number of the groups of groups,
and the adjusting module is used for adjusting the backlight brightness of the display screen so as to reduce the blue light hazard index of the display screen.
Based on the above object, a third aspect of the embodiments of the present invention provides a control device for controlling blue light on a display screen of a display, including: a processor; and a memory storing a computer program executable on the processor, the program when executed by the processor causing the processor to perform any one of the methods described above.
In view of the above object, a fourth aspect of the embodiments of the present invention provides a display, as shown in fig. 3, including:
a display screen;
the spectrum sensor is used for acquiring illuminance information of the display screen;
a controller for receiving illuminance information from the spectrum sensor; generating a blue light hazard index according to the received illuminance information, and sending the generated blue light hazard index to a display screen for display; comparing the blue light hazard index with a preset safety value, and reducing the blue light hazard index of the display screen when the blue light hazard index is higher than the preset safety value;
the light filling lamp of setting on the display reduces the blue light hazard index of display screen and includes: and controlling the light supplementing lamp to be turned on. In some embodiments, a display is provided in which a spectral sensor includes: a first spectrum sensor and a second spectrum sensor. The first spectrum sensor and the second spectrum sensor are respectively arranged on the front side and the back side of the display screen of the medical display, wherein the front side is the side of the display screen which is seen when the user faces the display screen, and the back side is the side of the display screen which is not seen when the user faces the display screen. The output end of the first spectrum sensor and the output end of the second spectrum sensor are connected with the input end of the controller. Specifically, the second spectrum sensor firstly collects illuminance information on the back surface of the display screen and sends the illuminance information to the controller; the controller receives illuminance information on the back of the display screen and analyzes the illuminance information through a corresponding calculation program to obtain the current blue light hazard index. After the light supplementing lamp is started, the first spectrum sensor module collects illuminance information on the front face of the display screen and sends the illuminance information to the controller to obtain a current blue light hazard index, at the moment, the blue light hazard index displayed on the display screen is reduced compared with the blue light hazard index before the defense measures are taken, and a user can feel reduction of blue light from the data layer.
In other embodiments, as shown in fig. 4, the first spectrum sensor 30 is installed on the display housing 11, for example, may be installed at the lower right edge of the display housing 11, so as to avoid the influence of the shielding of the spectrum sensor on the middle position of the display screen on the viewing of medical image data, the detection end of the first spectrum sensor 30 is opposite to the display screen 10, the second spectrum sensor 40 is installed at the center position of the back surface of the display screen 10 of the medical display, the detection end of the second spectrum sensor 40 is opposite to the back surface of the display screen 10, the output end of the first spectrum sensor 30 and the output end of the second spectrum sensor 40 are both connected with the input end of the controller, and the controller receives the detection data of the first spectrum sensor 30 and the detection data of the second spectrum sensor 40, so as to realize the real-time acquisition of illuminance information on the front surface or the back surface of the display screen 10.
In some embodiments, the display provided by the embodiment of the invention further comprises a spectrum analysis module, the spectrum analysis module analyzes according to illuminance information and through a corresponding calculation program to obtain a current blue light hazard index, and then the current blue light hazard index is sent to the controller, and the controller controls the display screen to display the current blue light hazard index; the controller compares the blue light hazard index with a preset safety value, and reduces the blue light hazard index of the display screen when the blue light hazard index is higher than the preset safety value;
in other embodiments, the light supplement lamp is disposed outside the display screen, and reducing the hazard of blue light includes turning on the light supplement lamp to reduce the hazard of blue light. . The light supplement lamp in the embodiment shown in fig. 4 is an LED lamp 20 which is mounted in a position above the interior of the display so that the light source emitted in the light supplement lamp is fully interactively mixed with the light source inside the medical display; the output of controller is connected with the input of light filling lamp, and the output of controller is connected with the input of display screen, and the light source of light filling lamp can be complemented with the light source of medical display, forms full spectrum in order to reduce blue light.
Further, in some embodiments of the present invention, the light supplementing lamp is configured as a violet chip excited LED lamp, when the violet chip excited LED lamp emits light, a continuous spectrum close to natural light is generated, the spectrum is full, the color of the light source is soft, the shortwave and high-energy blue light of the light source of the violet chip excited LED lamp have a small duty ratio (as shown in fig. 7), the medical display light source generally adopts a light source of the blue chip excited LED lamp, the light source spectrum has a distinct blue spectrum peak between 415 and 485nm (as shown in fig. 6), when the user turns on the violet chip excited LED lamp, the light source of the violet chip excited LED lamp and the light source of the medical display meet, the spectrum superposition and the energy neutralization occur, and the blue spectrum peak between 415 and 485nm in the finally obtained mixed light source is obviously reduced, and the whole light source is close to the full spectrum of the natural light (as shown in fig. 8).
In some embodiments, the display provided by the embodiments of the present invention further includes an input module for a user to select to turn on the light supplement lamp or adjust the backlight brightness of the display screen. The input mode in the input module is a key input mode, as shown in fig. 4, an OSD (on screen menu) key module 50 is disposed on the display housing 11 and is installed on the lower edge of the display housing 11, and an output end of the OSD key module 50 is connected with an input end of the controller, so as to selectively start the light supplement lamp or adjust the backlight brightness of the display screen according to the current blue light hazard index. Specifically, the OSD key module 50 may include four buttons, the first button 51 may be a menu button for user call-out and turn-off of a menu, the second button 52 may be an upward movement selection operation or an increase operation, the third button 53 may be a downward movement selection operation or a decrease operation, and the fourth button 54 may be a power button for user turn-on or turn-off of a medical display. It is understood that the buttons may be provided in other numbers or forms as desired and within the scope of the present invention. When the blue light hazard index displayed on the display screen is higher than a preset safety value, the user can also select to adjust the backlight brightness of the display screen or select to start the light supplementing lamp according to the set buttons.
In other embodiments, the input mode in the input module may be a touch input mode, and the touch input mode may be used when the display pops up the selection window.
In some embodiments, the display provided by the invention further comprises a backlight control module and/or a DICOM curve module, and the backlight brightness of the display screen is adjusted by the backlight control module and/or the DICOM curve module to reduce the damage of blue light.
Specifically, the DICOM curve module (the medical display is used as a professional display and needs to meet the gray scale display standard function of the 14 th part of the medical digital image communication standard DICOM, so as to ensure that the information and effects of one medical gray scale image displayed on different devices are the same) is configured as a read-only memory, different DICOM standard curves are stored in the read-only memory, the read-only memory is arranged on the control module, the brightness of the display can be adjusted according to the stored DICOM standard curves by arranging the DICOM curve module, and compared with the brightness of the display which is manually adjusted by a user through a dimming button, the user can select the different DICOM standard curves stored in the DICOM curve module through the OSD key module in the embodiment of the invention.
Further, the backlight control module is disposed on the backlight module of the display screen, the input end of the backlight control module is connected with the output end of the controller, and the output end of the backlight control module is connected with the input end of the display screen for adjusting the backlight brightness of the display screen, for example, a user can operate a button in an OSD (on screen menu) key module on the medical display to increase or decrease the backlight brightness of the display screen.
In some embodiments, the display screen may be a liquid crystal screen.
According to the display provided by the embodiment of the invention, the light intensity information of the display screen is acquired through the spectrum sensor, the controller receives the light intensity information of the display screen, obtains the current blue light hazard index and displays the hazard index on the display screen, so that a user can feel the hazard of blue light directly conveniently, the light source supplemented by the light supplementing lamp and the light source of the display screen are subjected to spectrum superposition and energy neutralization, the peak of the blue light spectrum in the finally obtained light source is obviously reduced, and the whole light source is close to the full spectrum of natural light, so that the blue light of the display screen is controlled, and the hazard of the blue light is reduced.
Fig. 5 shows a method for controlling blue light of a display screen of a display according to another embodiment, including the following steps:
s100: medical display activation
S101: the second spectrum sensor acquires illuminance information on the back of the display screen;
s102: the spectrum analysis module is started to receive illuminance information on the back of the display screen, analyze the illuminance information on the back of the display screen, and analyze and compare the illuminance information with preset illuminance values to obtain a current blue light hazard index;
s104: the spectrum analysis module outputs the current blue light hazard index to the control module;
s106: the control module outputs the current blue light hazard index to the display screen;
s107: the display screen displays the current blue light hazard index;
s108: if the current blue light hazard index is lower than a preset safety value, ending the control; if the current blue light hazard index is higher than the preset safety value, turning to step S109;
s109: the user operates the OSD key module;
s110: active defense is started;
s111: adjusting the DICOM curve when the user views the non-medical images;
s112: adjusting the backlight brightness of the display screen, and then turning to step S101; or then goes to step S116 to end the control;
s113: when the user views the medical image, the light supplementing lamp is turned on, and then the step S114 is performed;
s114: the first spectrum sensor obtains illuminance on the front surface of the display screen, and then the step S102 is carried out; or thereafter goes to step S116 to end the control.
According to the method for controlling the blue light of the display screen, the blue light hazard index is obtained by collecting the illuminance information on the back surface of the display screen and analyzing the illuminance information, the user actively takes corresponding defending measures according to the magnitude relation between the blue light hazard index and the preset safety value and the use scene of the user, for example, the backlight brightness of the display screen can be adjusted or a light supplementing lamp is started, so that the blue light hazard is reduced, after the defending measures are taken, the illuminance information on the back surface or the front surface of the display screen is collected again and analyzed to obtain the blue light hazard index, the user can intuitively see the change of the blue light hazard index before and after the defending measures are taken, the user can intuitively feel the reduction of the blue light, and the user experience is improved; and by turning on the light supplementing lamp, the user can not influence the backlight brightness required by viewing the medical image and can not damage the quality of the medical image when viewing the medical image.
It should be noted that, each component or step in each embodiment may be intersected, replaced, added, and deleted, and therefore, the combination formed by these reasonable permutation and combination transformations shall also belong to the protection scope of the present invention, and shall not limit the protection scope of the present invention to the embodiments.
The foregoing is an exemplary embodiment of the present disclosure, and the order in which the embodiments of the present disclosure are disclosed is merely for the purpose of description and does not represent the advantages or disadvantages of the embodiments. It should be noted that the above discussion of any of the embodiments is merely exemplary and is not intended to suggest that the scope of the disclosure of embodiments of the invention (including the claims) is limited to these examples and that various changes and modifications may be made without departing from the scope of the invention as defined in the claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the disclosed embodiments may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Those of ordinary skill in the art will appreciate that: the above discussion of any embodiment is merely exemplary and is not intended to imply that the scope of the disclosure of embodiments of the invention, including the claims, is limited to such examples; combinations of features of the above embodiments or in different embodiments are also possible within the idea of an embodiment of the invention, and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, and the like, which are made within the spirit and principles of the embodiments of the invention, are included within the scope of the embodiments of the invention.
Claims (8)
1. A method of controlling blue light of a display screen of a display, comprising the steps of:
acquiring illuminance information of a display screen;
generating a blue light hazard index according to the acquired illuminance information;
comparing the blue light hazard index with a preset safety value, selecting a mode for reducing the blue light hazard index of the display screen according to the information to be displayed when the blue light hazard index is higher than the preset safety value, and selecting a mode for reducing the backlight brightness of the display screen to reduce the blue light hazard index of the display screen if the influence of the backlight change on the display precision of the information to be displayed is small; and if the backlight change has a great influence on the display precision of the information to be displayed, selecting a mode of controlling the light supplementing lamp to be turned on to reduce the blue light hazard index of the display screen.
2. The method of claim 1, wherein the obtaining illuminance information of the display screen includes obtaining illuminance information of a back surface of the display screen.
3. The method according to claim 1, wherein the method further comprises: after generating a blue light hazard index according to the acquired illuminance information, sending the generated blue light hazard index to the display screen for display.
4. The method according to claim 1, wherein the method further comprises: after the light supplementing lamp is controlled to be turned on to reduce the blue light hazard index of the display screen, acquiring illuminance information of the front face of the display screen, and generating a new blue light hazard index according to the acquired illuminance information of the front face of the display screen; or (b)
After the backlight brightness of the display screen is reduced to reduce the blue light hazard index of the display screen, obtaining illuminance information on the back surface of the display screen, and generating a new blue light hazard index according to the obtained illuminance information on the back surface of the display screen;
the steps are then repeated: and comparing the blue light hazard index with a preset safety value.
5. A system for controlling blue light of a display screen of a display, comprising:
the acquisition module is used for acquiring illuminance information of the display screen;
the control module is used for receiving the illuminance information from the acquisition module; generating a blue light hazard index according to the received illuminance information; the generated blue light hazard index is sent to a display screen for display; comparing the blue light hazard index with a preset safety value, selecting a mode for reducing the blue light hazard index of the display screen according to the information to be displayed when the blue light hazard index is higher than the preset safety value, and selecting a mode for reducing the backlight brightness of the display screen to reduce the blue light hazard index of the display screen if the influence of the backlight change on the display precision of the information to be displayed is small; and if the backlight change has a great influence on the display precision of the information to be displayed, selecting a mode of controlling the light supplementing lamp to be turned on to reduce the blue light hazard index of the display screen.
6. The system of claim 5, wherein the system further comprises:
the light supplementing module is used for controlling the light supplementing module to reduce the blue light hazard index of the display screen; and/or the number of the groups of groups,
and the adjusting module is used for adjusting the backlight brightness of the display screen so as to reduce the blue light hazard index of the display screen.
7. A display, comprising:
a display screen;
the spectrum sensor is used for acquiring illuminance information of the display screen;
a light supplement lamp disposed on the display;
a controller for receiving the illuminance information from the spectrum sensor; generating a blue light hazard index according to the received illuminance information; the generated blue light hazard index is sent to a display screen for display; comparing the blue light hazard index with a preset safety value, selecting a mode for reducing the blue light hazard index of the display screen according to the information to be displayed when the blue light hazard index is higher than the preset safety value, and selecting a mode for reducing the backlight brightness of the display screen to reduce the blue light hazard index of the display screen if the influence of the backlight change on the display precision of the information to be displayed is small; and if the backlight change has a great influence on the display precision of the information to be displayed, selecting a mode for controlling the light supplementing lamp to be turned on to reduce the blue light hazard index of the display screen.
8. A control device for controlling blue light of a display screen of a display, comprising:
a processor;
a memory storing a computer program executable on the processor, which when executed by the processor causes the processor to perform the method of any one of claims 1-4.
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