CN104394278A - Method, device and mobile terminal for regulating screen brightness - Google Patents
Method, device and mobile terminal for regulating screen brightness Download PDFInfo
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- CN104394278A CN104394278A CN201410714757.7A CN201410714757A CN104394278A CN 104394278 A CN104394278 A CN 104394278A CN 201410714757 A CN201410714757 A CN 201410714757A CN 104394278 A CN104394278 A CN 104394278A
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Abstract
The invention is applicable to the technical field of communication and provides a method, a device and a mobile terminal for regulating screen brightness. The method comprises the following steps: determining changing speed of an illumination strength value of environmental light; determining a screen brightness value according to the changing speed of the illumination strength value of the environmental light, and regulating the screen brightness according to the screen brightness value. According to the method disclosed by the invention, the changing speed of the illumination strength value of the environmental light is determined firstly, then the screen brightness value is determined according to the changing speed of the illumination strength value of the environmental light, and finally the screen brightness is regulated according to the screen brightness value so that the screen brightness value can be set according to the changing speed of the illumination strength value. The method disclosed by the invention solves the problem that eye health is affected by fatigue of eyes of a user after the user uses the mobile terminal for a long time in a scene that the illumination strength value has tremendous changes, so that the aims of reducing eye fatigue of the user and protecting the eye health of the user can be realized.
Description
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a method and a device for adjusting screen brightness and a mobile terminal.
Background
With the rapid development of the mobile internet, the mobile terminals are also in diversified development, and as the main carrier of the mobile internet, the mobile terminals have played an increasingly important role in our lives, and we can surf the internet, send information, make a call, play games, shop and the like through the mobile terminals, and the mobile terminals have gradually replaced the functions of computers in some aspects.
However, in the process of implementing the present invention, the inventor finds that the mobile terminal provided by the prior art has at least the following problems:
the mobile terminal brings convenience to people and also brings health risks. For example, many mobile terminal users use the mobile terminal for a long time in a scene where the illumination intensity value of the light changes dramatically, so that the eyes are easy to feel fatigue, and the health of the eyes is affected.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method and an apparatus for adjusting screen brightness, and a mobile terminal, so as to solve a problem that a user uses the mobile terminal for a long time in a scene where a light intensity value of light is drastically changed, which affects eye health in the mobile terminal provided in the prior art.
In a first aspect, a method for adjusting screen brightness is provided, including:
determining the change speed of the illumination intensity value of the ambient light;
determining the screen brightness value according to the change speed of the illumination intensity value of the environment light;
and adjusting the screen brightness according to the screen brightness value.
With reference to the first aspect, in a first possible implementation manner, the determining a screen brightness value according to a change speed of the illumination intensity value of the ambient light includes:
and if the change speed of the illumination intensity value of the environment light is greater than the change speed threshold value, determining the screen brightness value as a first value.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the determining a screen brightness value according to a change speed of the illumination intensity value of the ambient light includes:
and if the change speed of the illumination intensity value of the environment light is less than or equal to the change speed threshold value, determining the screen brightness value according to the current illumination intensity value of the environment light and the corresponding relation between the preset illumination intensity value and the screen brightness value.
With reference to the first or second possible implementation manner of the first aspect, in a third possible implementation manner, the adjusting the screen brightness according to the screen brightness value includes:
and adjusting the screen brightness to the screen brightness value according to a preset brightness value adjusting speed.
With reference to the first aspect, with reference to the first, second, or third possible implementation manner of the first aspect, in a fourth possible implementation manner, the determining a change speed of the illumination intensity value of the ambient light includes:
periodically determining a speed of change of the illumination intensity value of the ambient light.
With reference to the first aspect, with reference to the first, second, third, or fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the determining a change speed of the illumination intensity value of the ambient light includes:
and determining the change speed of the illumination intensity value of the ambient light by obtaining the change quantity of the two voltage values output by the light sensor within the preset time range.
In a second aspect, an apparatus for adjusting screen brightness is provided, including:
an illumination intensity value determination unit for determining a change speed of an illumination intensity value of the ambient light;
a screen brightness value determining unit for determining a screen brightness value according to a variation speed of the illumination intensity value of the ambient light;
and the screen brightness adjusting unit is used for adjusting the screen brightness according to the screen brightness value.
With reference to the second aspect, in a first possible implementation manner, the screen brightness value determining unit includes:
the first screen brightness value determining module is configured to determine the screen brightness value as a first value if the illumination intensity value determining unit determines that a change speed of the illumination intensity value of the ambient light is greater than a change speed threshold.
With reference to the second aspect, with reference to the first possible implementation manner of the second aspect, in a second possible implementation manner, the screen brightness value determining unit further includes:
and the second screen brightness value determining module is configured to determine the screen brightness value according to the current illumination intensity value of the ambient light determined by the illumination intensity value determining unit and according to a corresponding relationship between a preset illumination intensity value and the screen brightness value, if the illumination intensity value determining unit determines that the change speed of the illumination intensity value of the ambient light is smaller than or equal to the change speed threshold.
With reference to the first or second possible implementation manner of the second aspect, in a third possible implementation manner, the adjusting the screen brightness according to the screen brightness value includes:
and adjusting the screen brightness to the screen brightness value according to a preset brightness value adjusting speed.
With reference to the second aspect, with reference to the first, second, or third possible implementation manner of the second aspect, in a fourth possible implementation manner, the illumination intensity value determining unit periodically determines a variation speed of the illumination intensity value of the ambient light.
With reference to the second aspect, with reference to the first or second or third or fourth possible implementation manner of the second aspect, in a fifth possible implementation manner, the illumination intensity value determining unit determines a variation speed of the illumination intensity value of the ambient light by acquiring a variation amount of two voltage values output by the light sensor within a preset time range.
In a third aspect, a mobile terminal is provided, which includes the apparatus for adjusting screen brightness according to the second aspect.
With reference to the third aspect, the mobile terminal is a smart phone or a tablet computer.
In the embodiment of the invention, the change speed of the illumination intensity value of the ambient light is determined, the screen brightness value is determined according to the change speed of the illumination intensity value of the ambient light, and the screen brightness is adjusted according to the determined screen brightness value, so that the screen brightness value can be set according to the change speed of the illumination intensity value, and the problem that the eye health of a user is influenced due to the fact that the user uses the mobile terminal for a long time in a scene where the illumination intensity value is changed violently is solved.
Drawings
FIG. 1 is a flowchart illustrating an embodiment of a method for adjusting screen brightness according to the present invention;
FIG. 2 is a flowchart illustrating an implementation of the method for adjusting screen brightness according to the embodiment of the present invention when a variation speed of an illumination intensity value of ambient light is greater than a preset variation speed threshold;
FIG. 3 is a block diagram of an embodiment of an apparatus for adjusting screen brightness according to the present invention;
fig. 4 is a block diagram of a mobile terminal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiment of the invention, the change speed of the illumination intensity value of the ambient light is determined, the screen brightness value is determined according to the change speed of the illumination intensity value of the ambient light, and the screen brightness is adjusted according to the screen brightness value.
The following detailed description of the implementation of the present invention is made with reference to specific embodiments:
example one
Fig. 1 shows an implementation flow of a method for adjusting screen brightness according to an embodiment of the present invention, which is detailed as follows:
in step S101, a change speed of the illumination intensity value of the ambient light is determined.
In an embodiment of the invention, the illumination intensity value of the ambient light is determined by a light sensor.
The mobile terminal is provided with the light sensor, and the illumination intensity of the ambient light can be detected in real time through the light sensor. The illumination intensity refers to the intensity of illumination, and is measured by the energy of visible light received in a unit area, which is referred to as illumination for short.
Specifically, the light sensor may adopt an advanced photoelectric conversion module to convert the illumination intensity value into a voltage value, the voltage value corresponds to the illumination intensity value one to one, the size of the voltage value may reflect the size of the illumination intensity value, and the speed of change of the voltage value may reflect the speed of change of the illumination intensity value.
In step S102, a screen brightness value is determined according to a variation speed of the illumination intensity value of the ambient light.
In the embodiment of the invention, the one-to-one correspondence relationship between the illumination intensity values and the screen brightness values can be preset, each illumination intensity value corresponds to one screen brightness value, and when the screen brightness value is adjusted to the screen brightness value corresponding to the illumination intensity, eyes of a user are not easy to fatigue, so that the eye health is protected.
When the current illumination intensity value of the environment light is smaller, the screen brightness value is set to be smaller, and the screen brightness value can be preset according to experience during actual application.
However, when the variation speed of the illumination intensity value of the ambient light is greater than the variation speed threshold, it indicates that the illumination intensity value of the ambient light varies rapidly, and the illumination intensity value of the ambient light varies more sharply, and at this time, the screen brightness is still adjusted according to the illumination intensity value of the ambient light, so that the screen brightness may jitter, which is not beneficial to protecting eyes, and the service life of the screen may be shortened.
In order to solve the above problem, it is preferable in the embodiment of the present invention that the screen brightness is adjusted according to how fast the change speed of the illumination intensity value of the ambient light changes.
Specifically, it is determined whether the change speed of the illumination intensity value of the ambient light is greater than a change speed threshold, and when the change speed of the illumination intensity value of the ambient light is greater than the change speed threshold, the following steps are performed, as shown in fig. 2:
step 1, determining the screen brightness value as a first value.
The mobile terminal may generate an instruction to update the screen brightness value to be a first value. Wherein the first value is a screen brightness value that a user feels comfortable.
Preferably, the first value is 0.
At this time, the mobile terminal generates a screen-off command, the LCD backlight lamp of the screen responds to the screen-off command, and the screen is controlled to be turned off through the screen-off command.
When the illumination intensity value of the ambient light is changed violently, the screen is controlled to be turned off, and eyes of a user can be better protected.
And 2, re-determining the change speed of the illumination intensity value of the ambient light.
And 3, if the change speed of the illumination intensity value of the re-determined environment light is less than or equal to the change speed threshold, determining the screen brightness value according to the current illumination intensity value of the re-determined environment light and the corresponding relation between the preset illumination intensity value and the screen brightness value.
The specific process is as follows: after the mobile terminal adjusts the screen brightness value to be a first value, the light sensor continues to detect the current illumination intensity of the ambient light, when the mobile terminal judges that the change speed of the illumination intensity value of the ambient light tends to be stable and does not change violently according to the change speed threshold value of the voltage values output by the light sensor twice within the preset time range, the mobile terminal records the current illumination intensity value of the ambient light and generates a control command, the LCD backlight lamp of the screen responds to the control command, and the screen brightness is slowly restored to the screen brightness value corresponding to the recorded illumination intensity value of the ambient light through the control command.
In addition, the mobile terminal periodically determines a change speed of the illumination intensity value of the ambient light.
After the screen brightness value is adjusted, the light sensor needs to continuously detect the change speed of the illumination intensity value of the ambient light, and the screen brightness is controlled according to the change speed of the illumination intensity value.
Specifically, when the variation speed of the illumination intensity value of the ambient light is less than or equal to the variation speed threshold, the screen brightness value is determined according to the current illumination intensity value of the ambient light and the corresponding relationship between the preset illumination intensity value and the screen brightness value.
Specifically, the change speed of the illumination intensity value of the ambient light is determined by obtaining the change quantity of the two voltage values output by the light sensor within the preset time range, when the change of the illumination intensity value of the ambient light is severe, the voltage value output by the light sensor can rapidly jump, and the change quantity of the two voltage values output by the light sensor within the preset time range can be large.
In step S103, the screen brightness is adjusted according to the screen brightness value.
In the embodiment of the invention, the mobile terminal adjusts the screen brightness to the screen brightness value according to the preset brightness value adjusting speed.
Specifically, the mobile terminal may generate a control command, and the LCD backlight of the screen responds to the control command, and the screen brightness is adjusted to the screen brightness value at a speed adjusted according to a preset brightness value by the control command.
In the embodiment, the change speed of the illumination intensity value of the ambient light is determined, the screen brightness value is determined according to the change speed of the illumination intensity value of the ambient light, and the screen brightness is adjusted according to the determined screen brightness value, so that the screen brightness value can be set according to the change speed of the illumination intensity value, and the problem that the eye health of a user is influenced due to the fact that the user uses the mobile terminal for a long time in a scene where the illumination intensity value is changed severely is solved.
In addition, whether the intensity value of the ambient light for the close illumination changes violently or not is judged in real time through the change of the voltage value output by the light sensor, and when the intensity value of the ambient light for the close illumination changes violently, the screen is controlled to be turned off, so that eyes of a user are protected more effectively.
It should be understood that, in the embodiment of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiment of the present invention.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the embodiments described above may be implemented by using a program to instruct relevant hardware, and the corresponding program may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk or optical disk.
Example two
Fig. 3 is a block diagram showing a specific structure of an apparatus for adjusting screen brightness according to a second embodiment of the present invention, and only the parts related to the second embodiment of the present invention are shown for convenience of illustration. The device 3 for adjusting screen brightness may be a software unit, a hardware unit or a combination unit of software and hardware built in the mobile terminal, and the device 3 for adjusting screen brightness includes: an illumination intensity value determining unit 31, a screen brightness value determining unit 32, and a screen brightness adjusting unit 33.
Wherein, the illumination intensity value determining unit 31 is configured to determine a change speed of the illumination intensity value of the ambient light;
a screen brightness value determining unit 32 for determining a screen brightness value according to a variation speed of the illumination intensity value of the ambient light;
and a screen brightness adjusting unit 33, configured to adjust the screen brightness according to the screen brightness value.
Specifically, the screen brightness value determining unit 32 includes: and the first screen brightness value determining module.
Wherein,
the first screen brightness value determining module 322 is configured to determine the screen brightness value as a first value if the illumination intensity value determining unit 32 determines that the change speed of the illumination intensity value of the ambient light is greater than a change speed threshold.
Specifically, the screen brightness value determining unit 32 further includes:
a second screen brightness value determining module, configured to determine the screen brightness value according to the current illumination intensity value of the ambient light determined by the illumination intensity value determining unit 32 and a corresponding relationship between a preset illumination intensity value and the screen brightness value, if the illumination intensity value determining unit 32 determines that the change speed of the illumination intensity value of the ambient light is smaller than or equal to the change speed threshold.
Specifically, the light intensity value determination unit 31 periodically determines a change speed of the light intensity value of the ambient light.
Specifically, the light intensity value determining unit 31 determines a change speed of the light intensity value of the ambient light by obtaining a change amount of two voltage values output by the light sensor within a preset time range.
Specifically, the screen brightness adjusting unit 33 adjusts the screen brightness to the screen brightness value according to a preset brightness value adjusting speed.
The device for adjusting the screen brightness provided by the embodiment of the present invention can be applied to the first corresponding method embodiment, and for details, reference is made to the description of the first embodiment, and details are not repeated here.
EXAMPLE III
Fig. 4 shows a specific structural block diagram of a mobile terminal according to a third embodiment of the present invention, and for convenience of description, only the parts related to the third embodiment of the present invention are shown. The mobile terminal 4 and the mobile terminal 4 may be a smart phone or a tablet computer, and include the device 3 for adjusting screen brightness according to the three embodiments, where the device 3 for adjusting screen brightness includes: an illumination intensity value determining unit 31, a screen brightness value determining unit 32, and a screen brightness adjusting unit 33.
Wherein, the illumination intensity value determining unit 31 is configured to determine a change speed of the illumination intensity value of the ambient light;
a screen brightness value determining unit 32 for determining a screen brightness value according to a variation speed of the illumination intensity value of the ambient light;
and a screen brightness adjusting unit 33, configured to adjust the screen brightness according to the screen brightness value.
Specifically, the screen brightness value determining unit 32 includes: and the first screen brightness value determining module.
Wherein,
a first screen brightness value determining module, configured to determine the screen brightness value as a first value if the illumination intensity value determining unit 32 determines that the change speed of the illumination intensity value of the ambient light is greater than a change speed threshold.
Specifically, the screen brightness value determining unit 32 further includes:
a second screen brightness value determining module, configured to determine the screen brightness value according to the current illumination intensity value of the ambient light determined by the illumination intensity value determining unit 32 and a corresponding relationship between a preset illumination intensity value and the screen brightness value, if the illumination intensity value determining unit 32 determines that the change speed of the illumination intensity value of the ambient light is smaller than or equal to the change speed threshold.
Specifically, the light intensity value determination unit 31 periodically determines a change speed of the light intensity value of the ambient light.
Specifically, the light intensity value determining unit 31 determines a change speed of the light intensity value of the ambient light by obtaining a change amount of two voltage values output by the light sensor within a preset time range.
Specifically, the screen brightness adjusting unit 33 adjusts the screen brightness to the screen brightness value according to a preset brightness value adjusting speed.
The mobile terminal provided in the embodiment of the present invention can be applied to the first corresponding method embodiment, and for details, reference is made to the description of the first embodiment, and details are not repeated here.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (14)
1. A method for adjusting screen brightness, comprising:
determining the change speed of the illumination intensity value of the ambient light;
determining the screen brightness value according to the change speed of the illumination intensity value of the ambient light;
and adjusting the screen brightness according to the screen brightness value.
2. The method of claim 1, wherein determining a screen brightness value according to a speed of change in the illumination intensity value of the ambient light comprises:
and if the change speed of the illumination intensity value of the ambient light is greater than the change speed threshold value, determining the screen brightness value as a first value.
3. The method according to claim 1 or 2, wherein the determining a screen brightness value according to a speed of change in the illumination intensity value of the ambient light includes:
and if the change speed of the illumination intensity value of the environment light is less than or equal to the change speed threshold value, determining the screen brightness value according to the current illumination intensity value of the environment light and the corresponding relation between the preset illumination intensity value and the screen brightness value.
4. The method of claim 2 or 3, wherein said adjusting the screen brightness according to the screen brightness value comprises:
and adjusting the screen brightness to the screen brightness value according to a preset brightness value adjusting speed.
5. The method of any one of claims 1 to 4, the determining a speed of change in the illumination intensity value of the ambient light, comprising:
periodically determining a speed of change of the illumination intensity value of the ambient light.
6. The method of any of claims 1 to 5, wherein the determining a speed of change in the value of the illumination intensity value of the ambient light comprises:
and determining the change speed of the illumination intensity value of the ambient light by obtaining the change quantity of the two voltage values output by the light sensor within a preset time range.
7. An apparatus for adjusting brightness of a screen, comprising:
an illumination intensity value determination unit for determining a change speed of an illumination intensity value of the ambient light;
a screen brightness value determining unit for determining a screen brightness value according to a variation speed of the illumination intensity value of the ambient light;
and the screen brightness adjusting unit is used for adjusting the screen brightness according to the screen brightness value.
8. The apparatus of claim 7, wherein the screen brightness value determining unit comprises:
the first screen brightness value determining module is configured to determine the screen brightness value as a first value if the illumination intensity value determining unit determines that a change speed of the illumination intensity value of the ambient light is greater than a change speed threshold.
9. The apparatus of claim 7 or 8, wherein the screen brightness value determining unit further comprises:
and the second screen brightness value determining module is configured to determine the screen brightness value according to the illumination intensity value of the ambient light determined by the illumination intensity value determining unit and according to a corresponding relationship between a preset illumination intensity value and the screen brightness value, if the illumination intensity value determining unit determines that the change speed of the illumination intensity value of the ambient light is smaller than or equal to the change speed threshold.
10. The apparatus of claim 8 or 9, wherein the screen brightness adjusting unit adjusts the screen brightness to the screen brightness value at a preset brightness value adjusting speed.
11. The apparatus according to any one of claims 7 to 10, wherein the illumination intensity value determination unit periodically determines a speed of change in the illumination intensity value of the ambient light.
12. The apparatus according to any one of claims 7 to 11, wherein the light intensity value determination unit determines a change speed of the light intensity value of the ambient light by acquiring a change amount of two voltage values output from the light sensor within a preset time range.
13. A mobile terminal characterized in that it comprises a device for adjusting screen brightness according to any one of claims 7 to 12.
14. The mobile terminal of claim 13, wherein the mobile terminal is a smartphone or a tablet computer.
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| CN101789230B (en) * | 2009-01-24 | 2013-09-04 | 联想(北京)有限公司 | Electronic equipment and display device screen brightness adjusting method thereof |
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