CN113781969B - Backlight adjusting method and device and electronic equipment - Google Patents
Backlight adjusting method and device and electronic equipment Download PDFInfo
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- CN113781969B CN113781969B CN202111134349.0A CN202111134349A CN113781969B CN 113781969 B CN113781969 B CN 113781969B CN 202111134349 A CN202111134349 A CN 202111134349A CN 113781969 B CN113781969 B CN 113781969B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
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- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The application provides a backlight adjusting method, a backlight adjusting device and electronic equipment, wherein the method comprises the following steps: obtaining an ambient light sensing value sensed by an ambient light sensor, wherein the ambient light sensing value is used for representing the ambient light brightness of the environment where the electronic equipment is located; obtaining a photosensitive parameter value sensed by an image sensor; if the brightness of the environment where the electronic equipment is located is determined to be changed based on the photosensitive parameter value sensed by the image sensor, controlling the backlight brightness of the display screen of the electronic equipment based on the ambient light sensing value; if the ambient light brightness of the environment where the electronic equipment is located is determined to be unchanged based on the photosensitive parameter value sensed by the image sensor, the backlight brightness of the display screen is maintained unchanged. The scheme of the application can reduce the backlight misoperation of the display screen, so that the backlight can be adjusted more accurately.
Description
Technical Field
The present application relates to the field of control technologies, and in particular, to a backlight adjustment method, a backlight adjustment device, and an electronic device.
Background
Backlight adjustment of an electronic device refers to automatically adjusting the backlight brightness of a display screen of the electronic device based on the ambient light intensity sensed by an ambient light sensor of the electronic device.
However, the layout structure of the ambient light sensor in the electronic device is limited, the range of the angle of the light rays sensed by the ambient light sensor is limited, and the condition that the ambient light sensor cannot accurately detect the ambient light brightness easily occurs, so that the backlight adjustment cannot be accurately and reliably realized based on the ambient light sensed by the ambient light sensor.
Disclosure of Invention
The application provides a backlight adjusting method, a backlight adjusting device and electronic equipment.
The backlight adjusting method comprises the following steps:
obtaining an ambient light sensing value sensed by an ambient light sensor, wherein the ambient light sensing value is used for representing the ambient light brightness of an environment where electronic equipment is located;
obtaining a photosensitive parameter value sensed by an image sensor;
if the ambient light brightness of the environment where the electronic equipment is located is determined to be changed based on the photosensitive parameter value sensed by the image sensor, controlling the backlight brightness of the display screen of the electronic equipment based on the ambient light sensing value;
And if the ambient light brightness of the environment where the electronic equipment is located is determined to be unchanged based on the photosensitive parameter value sensed by the image sensor, maintaining the backlight brightness of the display screen unchanged.
In one possible implementation, the obtaining the photosensitive parameter value sensed by the image sensor includes:
And if the brightness of the environment where the electronic equipment is located is changed based on the ambient light sensing value, acquiring a photosensitive parameter value sensed by the image sensor.
In yet another possible implementation manner, after obtaining the ambient light sensing value sensed by the ambient light sensor, the method further includes:
Determining an ambient light sensing change value based on the ambient light sensing value, the ambient light sensing change value being used to characterize a change in ambient light brightness sensed by the ambient light sensor;
And if the ambient light sensing change value exceeds a first threshold value, confirming that the ambient light brightness of the environment where the electronic equipment is located is determined to change based on the ambient light sensing value.
In yet another possible implementation manner, after the obtaining the photosensitive parameter value sensed by the image sensor, the method further includes:
Determining a photosensitive parameter change value based on the photosensitive parameter value, wherein the photosensitive parameter change value is a change value of the photosensitive parameter value sensed by the image sensor, and the photosensitive parameter change value is used for representing the change of the ambient light brightness sensed by the image sensor;
If the change value of the photosensitive parameter exceeds a second threshold value, determining that the change exists in the brightness of the environment light of the environment where the electronic equipment is located based on the sensed light parameter value;
and if the change value of the photosensitive parameter does not exceed the second threshold value, determining that the brightness of the environment where the electronic equipment is located is not changed based on the sensed light parameter value.
In yet another possible implementation manner, after obtaining the ambient light sensing value sensed by the ambient light sensor, the method further includes:
Determining a target screen brightness value of a display screen of the electronic device based on the ambient light sensing value;
the controlling the backlight brightness of the display screen of the electronic device based on the ambient light sensing value includes:
Adjusting the backlight brightness of a display screen of the electronic equipment according to the target screen brightness value;
The maintaining the backlight brightness of the display screen unchanged comprises the following steps:
discarding the target screen brightness value, and maintaining the backlight brightness of the display screen unchanged.
In yet another possible implementation manner, the method further includes:
If the ambient light brightness of the environment where the electronic equipment is located is determined to be changed based on the photosensitive parameter value, and the ambient light brightness of the environment where the electronic equipment is located is determined to be unchanged based on the ambient light sensing value, and the backlight brightness of the display screen of the electronic equipment is adjusted based on the photosensitive parameter value.
Wherein, an electronic device includes:
A processor, an ambient light sensor, an image sensor, and a display screen;
The ambient light sensor is used for sensing an ambient light sensing value of the environment, and the ambient light sensing value is used for representing the ambient light brightness of the environment where the ambient light sensor is located;
the image sensor is used for sensing a photosensitive parameter value of the environment, and the photosensitive parameter value is used for representing the environment brightness of the environment where the image sensor is positioned;
The processor is used for determining that the brightness of the environment where the electronic equipment is located changes if the brightness of the environment is changed based on the photosensitive parameter value sensed by the image sensor, and controlling the backlight brightness of the display screen based on the ambient light sensing value; and if the ambient light brightness of the environment where the electronic equipment is located is determined to be unchanged based on the photosensitive parameter value sensed by the image sensor, maintaining the backlight brightness of the display screen unchanged.
In one possible implementation, the range of angles of sensitization of the image sensor is greater than the range of angles of sensitization of the ambient light sensor.
In yet another possible implementation manner, the image sensor and the ambient light sensor are both disposed on a panel on which a display screen of the electronic device is disposed.
Wherein, a backlight adjusting device includes:
The first parameter obtaining unit is used for obtaining an ambient light sensing value sensed by the ambient light sensor, wherein the ambient light sensing value is used for representing the ambient light brightness of the environment where the electronic equipment is located;
a second parameter obtaining unit for obtaining the photosensitive parameter value sensed by the image sensor;
the backlight adjusting unit is used for determining that the brightness of the environment where the electronic equipment is located changes if the brightness of the environment is changed based on the photosensitive parameter value sensed by the image sensor, and controlling the backlight brightness of a display screen of the electronic equipment based on the environment light sensing value;
and the backlight maintaining unit is used for maintaining the backlight brightness of the display screen unchanged if the ambient light brightness of the environment where the electronic equipment is located is determined to be unchanged based on the photosensitive parameter value sensed by the image sensor.
From the above, the application can obtain not only the ambient light sensing value sensed by the ambient light sensor, but also the photosensitive parameter value sensed by the image sensor. Because the sensitization scope of image sensor is wider, the circumstances that can't sense ambient light because of reasons such as light angle change appear less easily, consequently, utilize the sensitization parameter value that image sensor sensed to judge whether environment takes place the change, can more accurately detect the circumstances that ambient light brightness exists the change. On the basis, if the ambient light brightness of the electronic equipment is determined not to change based on the photosensitive parameter value sensed by the image sensor, the backlight brightness of the display screen is not adjusted, and the situation that the backlight brightness is adjusted by mistake because the ambient light cannot enter the ambient light sensor is reduced. In addition, after the light sensing parameter value sensed by the image sensor represents the change of the ambient light brightness, the sensitivity of the ambient light sensor to sense the light brightness value is effectively utilized, and the backlight brightness is controlled based on the ambient light sensing value sensed by the ambient light sensor, so that the accuracy of backlight adjustment is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram showing a composition structure of an electronic device according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a backlight adjustment method according to an embodiment of the present application;
fig. 3 is a schematic flow chart of a backlight adjustment method according to an embodiment of the present application;
fig. 4 is a schematic flow chart of a backlight adjustment method according to an embodiment of the present application;
Fig. 5 is a schematic diagram showing a composition structure of a backlight adjusting device according to an embodiment of the present application.
Detailed Description
The scheme of the embodiment of the application is suitable for adjusting the backlight brightness of the display screen of the electronic equipment based on the environmental light of the electronic equipment, improves the accuracy of backlight brightness adjustment through the scheme of the application, and reduces abnormal conditions such as frequent screen brightness change and the like caused by false detection under the condition that the environmental light is not changed.
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without any inventive effort, are intended to be within the scope of the application.
The scheme of the application is suitable for electronic equipment with an ambient light sensor and an image sensor.
For easy understanding, an electronic device to which the present application is applied will be described.
As shown in fig. 1, a schematic diagram of a composition structure of an electronic device to which the present application is applied is shown.
The electronic device includes: a processor 101, an ambient light sensor 102, an image sensor 103 and a display screen 104.
The ambient light sensor 102 is configured to sense an ambient light sensing value of an environment, where the ambient light sensing value is used to characterize an ambient light level of the environment in which the ambient light sensor is located.
The image sensor 103 is configured to sense a photosensitive parameter value of an environment, where the photosensitive parameter value is used to represent an ambient light level of the environment in which the image sensor is located.
In the present application, the processor 101 is configured to determine that there is a change in the ambient light brightness of the environment where the electronic device is located, for example, based on the photosensitive parameter value sensed by the image sensor, and control the backlight brightness of the display screen 104 based on the ambient light sensing value; if the ambient light brightness of the environment where the electronic equipment is located is determined to be unchanged based on the photosensitive parameter value sensed by the image sensor, the backlight brightness of the display screen is maintained unchanged.
In the present application, the type of the electronic device may be various, for example, the electronic device may be a mobile phone or a tablet computer, which is not limited thereto.
It will be appreciated that the ambient light sensor (ambient light sensor, ALS) is built into the panel of the electronic device, limited by its ambient light sensor structure, and the light entry angle of the ambient light sensor is greatly limited, i.e., the light sensing angle of the ambient light sensor is relatively limited.
Based on this, after the angle of the electronic device changes, the ambient light sensor can easily appear that the ambient light sensor cannot sense the ambient light brightness, and the ambient light of the environment where the misjudgment electronic device is located changes greatly, so as to trigger the electronic device to misregulate the backlight brightness of the display screen, and even under the condition that the ambient brightness is not changed, the situation that the backlight brightness is frequently regulated in a short time can appear.
In one possible implementation, in order to better sense the brightness of the environment in which the display screen is located, the ambient light sensor is typically disposed on the side of the panel on which the display screen of the electronic device is located. Along with the increasing demand of people for a narrow frame of a screen, an ambient light sensor is generally disposed in a groove, and a narrow slit is reserved for the ambient light sensor on a glass cover plate corresponding to a display screen, so that the ambient light sensor can sense the brightness of ambient light. According to the setting structure of the ambient light sensor and the requirement of the narrow slit on the light entering direction, under the condition that the ambient light brightness of the electronic equipment is not changed, if the angle of the display screen of the electronic equipment is changed, the situation that the ambient light sensor cannot be entered due to the fact that light is blocked can also occur, so that the parameter value of the ambient light brightness sensed by the ambient light sensor is changed greatly, and further, the adjustment of the backlight brightness of the display screen is triggered (such as the dimming of the backlight brightness of the display screen is triggered).
Accordingly, if the angle of the electronic device is changed for a plurality of times, the ambient light sensor can sense light and can not sense the frequent change between the light, so that the backlight brightness of the display screen is caused to change frequently, the backlight shakes back and forth, and discomfort caused by the use of a user is caused.
Of course, the above is taken as an example that the ambient light sensor is disposed on the panel where the display screen is disposed, and the same situation exists when the ambient light sensor is disposed on the back plate of the electronic device in practical application, which is not limited thereto.
In the present application, the image sensor is a sensor for acquiring and generating an image in an electronic device. It is understood that the image sensor has photosensitive elements, and thus the image sensor also has a function of sensing ambient light. In the application, the photosensitive function of the photosensitive element in the image sensor is multiplexed to obtain the photosensitive parameter value sensed by the image sensor. Moreover, since the image sensor requires relatively low power consumption for sensing ambient light only by the photosensitive element, it does not have a large influence on the power consumption of the electronic device.
The image sensor is a low-power-consumption camera of the electronic equipment, the low-power-consumption camera is used for detecting whether a living body (or a user) is close to the electronic equipment, and the electronic equipment is awakened or an identity recognition device (biological characteristics such as fingerprints or faces) of the electronic equipment is awakened under the state that the electronic equipment is in low power consumption.
The sensing range of the image sensor is wide, and thus, the photosensitive angle range of the image sensor is larger than that of the environmental sensor.
Because of the design structure of the image sensor in the electronic equipment, the light inlet angle of the image sensor can reach 360 degrees, so that the image sensor cannot be subjected to angle change of the electronic equipment and cannot sense ambient light, and based on the design structure, the change of the sensed light parameters sensed by the image sensor is used as a basis for judging whether the ambient light brightness of the environment where the electronic equipment is located is changed or not, and the condition of the ambient light brightness change of the environment where the electronic equipment is located can be well detected.
However, the accuracy of the parameters of the light intensity sensed by the image sensor is relatively low with respect to the high accuracy of the ambient light sensor. Based on the above, the application can judge whether the ambient light brightness changes based on the photosensitive parameter value sensed by the image sensor, and adjust the backlight brightness of the display screen based on the ambient light brightness sensed by the ambient light sensor if the ambient light brightness is determined to change, so as to further improve the adjustment precision of the backlight brightness of the display screen.
In the present application, the image sensor may be a front-end image sensor of the electronic device, that is, the image sensor is disposed on a panel where a display screen of the electronic device is located. The image sensor may also be a rear image sensor disposed on a back plate of the electronic device, which is not limited thereto.
As an alternative, in order to more accurately represent the light condition of the display screen, the image sensor may be a front-end image sensor of the electronic device.
The related operations of the processor in the electronic device may be referred to the related descriptions of the method embodiments below, which are not described herein.
It should be understood that fig. 1 is only a schematic diagram of an electronic device according to the present application, and in practical applications, the electronic device may further include more or fewer components, for example, the electronic device may include a communication bus, a processor, an image sensor, an ambient light sensor, a display screen, etc. may all implement data transmission or communication connection through the communication bus.
The backlight adjusting method of the present application will be described below with reference to the above description using flowcharts.
As shown in fig. 2, which is a schematic flow chart of a backlight adjustment method according to an embodiment of the present application, the method of the present embodiment may be applied to the aforementioned electronic device, and the method of the present embodiment may include:
S201, obtaining an ambient light sensing value sensed by an ambient light sensor.
The ambient light sensing value is a parameter value sensed by the ambient light sensor and used for representing the brightness of the ambient light sensed by the ambient light sensor. In practical applications, the ambient light sensing value may be used to characterize the ambient light level of the environment in which the electronic device is located.
S202, obtaining a photosensitive parameter value sensed by the image sensor.
The photosensitive parameter value is a parameter value which is sensed by the image sensor and represents the brightness of the environment where the image sensor is positioned.
In this embodiment, the sequence of steps S201 and S202 is not limited, and in practical application, the steps may be performed simultaneously, or the sequence may be interchanged.
And S203, if the change of the ambient light brightness of the environment where the electronic equipment is located is determined based on the photosensitive parameter value sensed by the image sensor, controlling the backlight brightness of the display screen of the electronic equipment based on the ambient light sensing value.
In the application, if the brightness of the environment sensed by the image sensor is determined to change based on the photosensitive parameter value, the brightness of the environment where the electronic equipment is positioned is determined to change.
There are many possible ways to determine that there is a change in the ambient light level based on the value of the photosensitive parameter. Several possible scenarios are illustrated below.
For example, in one possible implementation, if it is determined that the photosensitive parameter value is different from the last collected historical sensing parameter value or the historical time that is a set time period from the current time, it is determined that there is a change in the ambient light brightness.
In yet another possible implementation manner, in order to accurately determine whether there is a change in the ambient light brightness of the environment in which the electronic device is located, after the photosensitive parameter value is obtained, the photosensitive parameter change value may be determined based on the photosensitive parameter value. The change value of the photosensitive parameter is a change value of a photosensitive parameter value sensed by the image sensor, and the change value of the photosensitive parameter is used for representing the change of the brightness of the environment sensed by the image sensor.
For example, the photosensitive parameter variation value may be determined in combination with a history of photosensitive parameter values obtained last time or in a last time period, without limitation.
Accordingly, if the change value of the photosensitive parameter exceeds a photosensitive change threshold, it can be determined that there is a change in the ambient light brightness of the environment in which the electronic device is located based on the sensed light parameter value. Similarly, if the change value of the photosensitive parameter does not exceed the photosensitive change threshold, it is determined that there is no change in the ambient light level of the environment in which the electronic device is located.
Of course, other ways of determining whether there is a change in the ambient light brightness of the environment in which the electronic device is located based on the photosensitive parameter value may be possible, and the other ways are also applicable to the present embodiment, which is not limited.
As can be seen from the foregoing description, the range of the light sensing angle of the image sensor is wide, so that there is no situation that the ambient brightness is unchanged and the image sensor senses the change of the ambient brightness. Based on the above, when the change of the ambient light brightness of the environment where the electronic equipment is located is determined based on the photosensitive parameter value sensed by the image sensor, the backlight brightness of the display screen of the electronic equipment is controlled based on the ambient light sensing value sensed by the ambient light sensor, so that abnormal conditions such as misjudgment of reduction of the ambient brightness and the like caused by limited light entering angle of the ambient light sensor can be avoided; meanwhile, the brightness of the electric backlight can be accurately controlled by means of the sensing precision of the ambient light sensor on the brightness value of the light.
The controlling the backlight brightness of the display screen of the electronic device based on the ambient light sensing value may be adjusting the backlight brightness of the display screen of the electronic device according to the ambient light sensing value; the method can also be that when the environmental light sensing value represents that the environmental brightness variation amplitude of the environment where the electronic equipment is located is smaller, the backlight brightness of the display screen of the electronic equipment is maintained, and the backlight brightness can be specifically determined according to the environmental light sensing value or by combining the environmental sensing value and the historically sensed environmental light sensing value.
In an alternative manner, the application can determine the target screen brightness value of the display screen of the electronic device based on the ambient light sensing value after the ambient light sensing value is sensed by the ambient light sensor. The target screen brightness value refers to a brightness value which is required to be displayed on the display screen and matched with the ambient light sensing value sensed by the ambient light sensor.
For example, the target screen brightness value corresponding to the ambient light sensing value can be determined according to the corresponding relation between different ambient light sensing values and the screen brightness value. Of course, for illustration, there are various ways to determine the corresponding target screen brightness value by integrating the ambient light sensing value sensed by the ambient light sensor in practical application, and this is not a limitation.
Accordingly, the backlight brightness of the display screen of the electronic device may be adjusted according to the target screen brightness value. For example, the backlight brightness is adjusted to the target screen brightness value.
S204, if it is determined that the ambient light brightness of the environment where the electronic device is located is not changed based on the photosensitive parameter value sensed by the image sensor, the backlight brightness of the display screen is maintained unchanged.
In the application, if the photosensitive parameter value sensed by the image sensor indicates that the ambient light brightness of the environment where the electronic equipment is located is not changed, even if the ambient light sensor senses the ambient light brightness change, the backlight brightness is not adjusted according to the ambient light sensing value sensed by the ambient light sensor, but the backlight brightness of the display screen is maintained unchanged, so that the situation that the backlight brightness is adjusted by mistake due to the shielding of the incoming light of the ambient light sensor can be reduced.
From the above, the present application can obtain not only the ambient light sensing value sensed by the ambient light sensor, but also the light sensing parameter value sensed by the image sensor. Because the sensitization scope of image sensor is wider, the circumstances that can't sense ambient light because of reasons such as light angle change appear less easily, consequently, utilize the sensitization parameter value that image sensor sensed to judge whether environment takes place the change, can more accurately detect the circumstances that ambient light brightness exists the change.
On the basis, if the ambient light brightness of the electronic equipment is determined not to change based on the photosensitive parameter value sensed by the image sensor, the backlight brightness of the display screen is not adjusted, and the situation that the backlight brightness is adjusted by mistake because the ambient light cannot enter the ambient light sensor is reduced. In addition, after the light sensing parameter value sensed by the image sensor represents the change of the ambient light brightness, the sensitivity of the ambient light sensor to sense the light brightness value is effectively utilized, and the backlight brightness is controlled based on the ambient light sensing value sensed by the ambient light sensor, so that the accuracy of backlight adjustment is effectively improved.
It can be understood that in order to determine whether the environmental light brightness of the environment where the electronic device is located has a change more accurately in the application, the application can comprehensively analyze whether the environmental light brightness of the environment where the electronic device is located has a change by combining the environmental light sensing value sensed by the environmental light sensor in addition to judging whether the environmental light brightness has a change based on the sensing value sensed by the image sensor. Several possible scenarios are described below.
In one possible case, the application can obtain the photosensitive parameter value sensed by the image sensor under the condition that the change of the ambient light brightness of the environment where the electronic device is positioned is determined based on the ambient light sensing value sensed by the ambient light sensor.
It can be understood that if the ambient light sensor senses an ambient sensing value indicating a change in the ambient light level, the ambient light level may actually change, or misjudgment may occur due to the fact that the ambient light sensor cannot sense light entering due to an angle at which the electronic device is located or the ambient light sensor is blocked.
On the basis, in order to reduce misjudgment of the change of the ambient light brightness, the application further obtains the photosensitive parameter value sensed by the image sensor. Accordingly, only when the ambient light sensing parameter value also represents the environment where the electronic device is located has a change, the backlight brightness of the display screen of the electronic device is controlled according to the ambient light sensing value sensed by the ambient light sensor, so that the situation that the backlight brightness is erroneously adjusted due to misjudgment of the ambient light sensor can be reduced.
In addition, under the condition that the ambient light sensing value sensed by the ambient light sensor represents the change of the ambient light of the electronic equipment, the photosensitive parameter value sensed by the image sensor is obtained, so that the power consumption consumed by the image sensor for always sensing the photosensitive parameter value can be avoided, and the power consumption caused by continuously sensing the ambient light by the image sensor is reduced.
The method for analyzing whether the ambient light brightness of the electronic device changes by combining the ambient light sensing value sensed by the ambient light sensor can also be various, and is not limited.
In order to facilitate understanding of the specific implementation of comprehensively analyzing whether there is a change in the ambient light level of the environment in which the electronic device is located by combining the ambient light sensor and the image sensor in this possible case, an implementation of determining whether there is a change in the ambient light level of the environment in which the electronic device is located based on the ambient light sensing value is described below as an example.
As shown in fig. 3, which is a schematic flow chart of a backlight adjustment method according to an embodiment of the present application, the method may include:
S301, obtaining an ambient light sensing value sensed by an ambient light sensor.
The ambient light sensing value may be used to characterize the ambient light level of the environment in which the electronic device is located.
S302, determining an ambient light sensing change value based on the ambient light sensing value.
The ambient light sensing transformation value is used for representing the change of the ambient light brightness sensed by the ambient light sensor.
For example, a difference in the ambient light sensing value may be determined based on the ambient light sensing value and a historical ambient light sensing value that was last acquired prior to the acquisition of the ambient light sensing value, and the difference may be determined as an ambient light sensing change value.
For another example, the ambient light sensing value and at least one historical ambient light sensing value collected within a set period of time before the ambient light sensing value is collected may be synthesized to determine the ambient light sensing change value.
S303, if the ambient light sensing change value exceeds a first threshold value, a sensing parameter value sensed by the image sensor is obtained.
The first threshold is a preset ambient light sensing threshold. For example, a luminance change threshold value capable of characterizing a change in the ambient light level may be empirically set as the first threshold value.
It will be appreciated that if the ambient light sensing variation value exceeds the first threshold value, then the following is stated: and determining that the change exists in the ambient light brightness of the environment where the electronic equipment is located based on the ambient light sensing value. In this case, in order to further verify whether there is a change in the ambient light level of the environment in which the electronic device is located, the present application may obtain at least one photosensitive parameter value sensed by the image sensor, so as to further analyze whether the photosensitive parameter value also indicates that there is a change in the ambient light level of the environment in which the electronic device is located through a subsequent step.
It will be appreciated that if the ambient light sensing variation value does not exceed the first threshold value, there is no sudden dimming of the sensed ambient light level due to the ambient light sensor being blocked, in which case the backlight brightness of the display screen of the electronic device may be maintained unchanged.
It should be noted that, the above steps S302 to S303 are an example of an implementation manner of determining that there is a change in the ambient light level of the environment where the electronic device is located based on the ambient light sensing value sensed by the ambient light sensor, and the embodiment is equally applicable to analyzing the change in the ambient light level of the environment where the electronic device is located by other manners in combination with the ambient light sensing value.
S304, determining a photosensitive parameter change value based on the photosensitive parameter value.
The change value of the photosensitive parameter is a change value of a photosensitive parameter value sensed by the image sensor, and the change value of the photosensitive parameter is used for representing the change of the brightness of the environment sensed by the image sensor.
The manner of determining the variation value of the photosensitive parameter may be referred to the description of the previous embodiment, and will not be repeated.
And S305, controlling the backlight brightness of the display screen of the electronic device based on the ambient light sensing value if the variation value of the photosensitive parameter exceeds a second threshold value.
Wherein the second threshold value is a threshold value determined for the sensing parameter variation value, namely the aforementioned sensing variation threshold value. Wherein the second threshold may be set based on a minimum photosensitive parameter variation value required to be able to characterize the ambient light level variation.
For convenience of distinction, the threshold value set for the ambient light sensing change value in the foregoing is referred to as a first threshold value, and the threshold value set for the light sensing parameter change value herein is referred to as a second threshold value. Typically, the first threshold is of a different size than the second threshold.
It will be appreciated that if the sensed light parameter variation value exceeds the second threshold value, it is interpreted that there is a variation in the ambient light level of the environment in which the electronic device is located, based on the sensed light parameter value.
It should be noted that this step is described as an implementation manner of determining that there is a change in the environmental light brightness of the environment where the electronic device is located based on the photosensitive parameter value, and the same applies to the present embodiment for other manners.
S306, if the variation value of the photosensitive parameter does not exceed the second threshold value, maintaining the backlight brightness of the display screen unchanged.
In the embodiment of the application, after the ambient light induction change value is determined based on the ambient light induction value induced by the ambient light sensor, if the ambient light induction change value characterizes that the ambient light of the environment where the electronic equipment is located is analyzed based on the ambient light induction value induced by the ambient light sensor, the photosensitive parameter value induced by the image sensor is further obtained, and if the photosensitive parameter value can also characterize that the ambient light brightness of the environment where the electronic equipment is located is changed, the ambient light brightness of the environment where the electronic equipment is located is truly changed, so that the accuracy of determining the ambient light brightness change of the environment where the electronic equipment is located is further improved.
In another possible implementation manner, the application can also respectively obtain the photosensitive parameter value sensed by the image sensor and the ambient light sensing value sensed by the ambient light sensor, then respectively combine the two parameter values to judge whether the ambient light brightness of the environment where the electronic equipment is located has change, and then judge whether the backlight brightness of the display screen needs to be adjusted according to the analysis results corresponding to the two parameter values.
For example, after the ambient light sensing value sensed by the ambient light sensor is obtained, whether the ambient light brightness of the environment where the electronic device is located is changed is determined based on the ambient light sensing value.
Similarly, after the photosensitive parameter value sensed by the image sensor is obtained, whether the brightness of the environment where the electronic device is located changes is judged based on the sensing parameter value.
On the basis, only if the ambient light brightness of the environment where the electronic equipment is located is determined to be changed based on the ambient light sensing value sensed by the ambient light sensor, and the ambient light brightness of the environment where the electronic equipment is located is determined to be changed based on the photosensitive parameter value sensed by the image sensor, the backlight brightness of the display screen of the electronic equipment is controlled based on the ambient light sensing value.
Otherwise, if only the ambient light sensing value indicates that the ambient light brightness of the environment where the electronic device is located is changed, and the light sensing parameter value sensed by the image sensor indicates that the ambient light brightness of the environment where the electronic device is located is not changed, the backlight brightness of the display screen of the electronic device is maintained.
It will be appreciated that in some special cases, there may be a change in the ambient light level where the electronic device is located, but the ambient light sensor of the electronic device does not detect the change in the ambient light level. For example, if the ambient light sensor of the electronic device is blocked for a longer period of time, it may also occur that the ambient light has become bright, and the ambient light sensor of the electronic device does not detect an increase in the ambient light level of the environment.
In these special cases, the use of the user may also be affected if the backlight brightness of the display screen of the electronic device is kept unchanged. Based on the above, in the application, if it is determined that the ambient light brightness of the environment where the electronic device is located is changed based on the photosensitive parameter value, and it is determined that the ambient light brightness of the environment where the electronic device is located is not changed based on the ambient light sensing value, the backlight brightness of the display screen of the electronic device can be adjusted based on the photosensitive parameter value.
The following describes an application scenario in which a target screen brightness value is determined based on an ambient light sensing value sensed by an ambient light sensor, and backlight brightness is adjusted based on the target screen brightness value, as shown in fig. 4, which shows still another flow chart of a backlight adjusting method according to the present application, the embodiment may include:
S401, obtaining an ambient light sensing value sensed by an ambient light sensor.
The ambient light sensing value may be used to characterize the ambient light level of the environment in which the electronic device is located.
S402, determining a target screen brightness value of a display screen of the electronic device based on the ambient light sensing value.
It will be appreciated that in the present application, an adapted screen brightness value may be determined after the ambient light sensing value is obtained as shown in fig. 4; or, under the condition that the ambient light sensing value represents that the ambient light brightness of the environment where the electronic device is located has a change, determining a screen brightness value suitable for the display screen based on the ambient light sensing value.
S403, determining an ambient light sensing change value based on the ambient light sensing value.
The ambient light sensing transformation value is used for representing the change of the ambient light brightness sensed by the ambient light sensor.
S404, if the ambient light sensing change value exceeds the first threshold value, a sensing parameter value sensed by the image sensor is obtained.
S405, based on the photosensitive parameter value, a photosensitive parameter variation value is determined.
The change value of the photosensitive parameter is a change value of a photosensitive parameter value sensed by the image sensor, and the change value of the photosensitive parameter is used for representing the change of the brightness of the environment sensed by the image sensor.
S406, if the variation value of the photosensitive parameter exceeds a second threshold value, adjusting the backlight brightness of the display screen of the electronic device according to the target screen brightness value.
S407, if the variation value of the photosensitive parameter exceeds a second threshold value, discarding the brightness value of the target screen, and maintaining the backlight brightness of the display screen unchanged.
The application also provides a backlight adjusting device corresponding to the backlight adjusting method. As shown in fig. 5, a schematic diagram of a composition structure of a backlight adjusting apparatus of the present application is shown. The apparatus of this embodiment may include:
A first parameter obtaining unit 501, configured to obtain an ambient light sensing value sensed by an ambient light sensor, where the ambient light sensing value is used to characterize an ambient light brightness of an environment where the electronic device is located;
a second parameter obtaining unit 502, configured to obtain a photosensitive parameter value sensed by the image sensor;
A backlight adjusting unit 503, configured to determine that there is a change in the ambient light brightness of the environment where the electronic device is located, based on the photosensitive parameter value sensed by the image sensor, and control the backlight brightness of the display screen of the electronic device based on the ambient light sensing value;
and the backlight maintaining unit 504 is configured to maintain the backlight brightness of the display screen unchanged if it is determined that the ambient light brightness of the environment where the electronic device is located is unchanged based on the photosensitive parameter value sensed by the image sensor.
In a possible implementation manner, the second parameter obtaining unit is specifically configured to determine that there is a change in the ambient light brightness of the environment where the electronic device is located, based on the ambient light sensing value, so as to obtain a value of the photosensitive parameter sensed by the image sensor.
In one alternative, the apparatus further comprises:
A first value determining unit, configured to determine an ambient light sensing change value based on an ambient light sensing value sensed by an ambient light sensor after the first parameter obtaining unit obtains the ambient light sensing value, where the ambient light sensing change value is used to characterize a change in brightness of ambient light sensed by the ambient light sensor;
And the first change confirming unit is used for confirming that the change exists in the ambient light brightness of the environment where the electronic equipment is located based on the ambient light sensing value if the ambient light sensing change value exceeds a first threshold value.
In yet another possible implementation, the apparatus further includes:
A second value determining unit, configured to determine, based on a photosensitive parameter value sensed by an image sensor after the second parameter obtaining unit obtains the photosensitive parameter value, a photosensitive parameter change value, where the photosensitive parameter change value is a change value of the photosensitive parameter value sensed by the image sensor, and the photosensitive parameter change value is used to characterize a change in brightness of an environment sensed by the image sensor;
A second change confirmation unit, configured to determine that there is a change in the ambient light brightness of the environment in which the electronic device is located based on the sensed light parameter value if the sensed light parameter change value exceeds a second threshold value;
And the unchanged confirming unit is used for confirming that the brightness of the environment where the electronic equipment is located is unchanged based on the sensed light parameter value if the sensed light parameter change value does not exceed the second threshold value.
In one possible implementation, the apparatus further includes:
And the auxiliary brightness adjusting unit is used for determining that the environment brightness of the environment where the electronic equipment is located is changed if the environment brightness of the environment where the electronic equipment is located is changed based on the photosensitive parameter value, determining that the environment brightness of the environment where the electronic equipment is located is not changed based on the environment light sensing value, and adjusting the backlight brightness of the display screen of the electronic equipment based on the photosensitive parameter value.
In yet another possible implementation, the apparatus further includes: a screen brightness determining unit, configured to determine a target screen brightness value of a display screen of the electronic device based on an ambient light sensing value sensed by an ambient light sensor after the first parameter obtaining unit obtains the ambient light sensing value;
The backlight adjusting unit is specifically configured to determine that there is a change in the ambient light brightness of the environment where the electronic device is located, based on the photosensitive parameter value sensed by the image sensor, and adjust the backlight brightness of the display screen of the electronic device according to the target screen brightness value;
The backlight maintenance unit is specifically configured to, if it is determined that there is no change in the ambient light brightness of the environment where the electronic device is located based on the photosensitive parameter value sensed by the image sensor, discard the target screen brightness value, and maintain the backlight brightness of the display screen unchanged.
In another aspect, the present application also provides a computer readable storage medium having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, the at least one instruction, the at least one program, the set of codes, or the set of instructions being loaded and executed by a processor to implement a backlight adjustment method according to any one of the embodiments above.
The present application also proposes a computer program comprising computer instructions stored in a computer readable storage medium. The computer program is for performing the backlight adjustment method in any of the above embodiments when run on an electronic device.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. Meanwhile, the features described in the embodiments in the present specification may be replaced with or combined with each other to enable those skilled in the art to make or use the present application. For the apparatus class embodiments, the description is relatively simple as it is substantially similar to the method embodiments, and reference is made to the description of the method embodiments for relevant points.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (9)
1. A backlight adjustment method, comprising:
obtaining an ambient light sensing value sensed by an ambient light sensor, wherein the ambient light sensing value is used for representing the ambient light brightness of an environment where electronic equipment is located;
obtaining a photosensitive parameter value sensed by an image sensor;
Under the condition of angle change of the electronic equipment, if the ambient light brightness of the environment where the electronic equipment is positioned is determined to be changed based on the photosensitive parameter value sensed by the image sensor, controlling the backlight brightness of a display screen of the electronic equipment based on the ambient light sensing value; wherein, the change value of the photosensitive parameter exceeds a second threshold value to represent that the brightness of the environment where the electronic equipment is located is changed;
If the ambient light brightness of the environment where the electronic equipment is located is determined to be unchanged based on the photosensitive parameter value sensed by the image sensor, maintaining the backlight brightness of the display screen unchanged;
If the ambient light brightness of the environment where the electronic equipment is located is determined to be changed based on the photosensitive parameter value, and the ambient light brightness of the environment where the electronic equipment is located is determined to be unchanged based on the ambient light sensing value, and the backlight brightness of the display screen of the electronic equipment is adjusted based on the photosensitive parameter value.
2. The method of claim 1, the obtaining values of the photosensitive parameters sensed by the image sensor, comprising:
And if the brightness of the environment where the electronic equipment is located is changed based on the ambient light sensing value, acquiring a photosensitive parameter value sensed by the image sensor.
3. The method of claim 2, further comprising, after obtaining the ambient light sensing value sensed by the ambient light sensor:
Determining an ambient light sensing change value based on the ambient light sensing value, the ambient light sensing change value being used to characterize a change in ambient light brightness sensed by the ambient light sensor;
And if the ambient light sensing change value exceeds a first threshold value, confirming that the ambient light brightness of the environment where the electronic equipment is located is determined to change based on the ambient light sensing value.
4. The method of claim 1, further comprising, after said obtaining the value of the photosensitive parameter sensed by the image sensor:
Determining a photosensitive parameter change value based on the photosensitive parameter value, wherein the photosensitive parameter change value is a change value of the photosensitive parameter value sensed by the image sensor, and the photosensitive parameter change value is used for representing the change of the ambient light brightness sensed by the image sensor;
if the photosensitive parameter change value exceeds a second threshold value, determining that the change exists in the ambient light brightness of the environment where the electronic equipment is located based on the photosensitive parameter value;
And if the change value of the photosensitive parameter does not exceed the second threshold value, determining that the brightness of the environment where the electronic equipment is located is not changed based on the photosensitive parameter value.
5. The method of claim 1, further comprising, after obtaining the ambient light sensing value sensed by the ambient light sensor:
Determining a target screen brightness value of a display screen of the electronic device based on the ambient light sensing value;
the controlling the backlight brightness of the display screen of the electronic device based on the ambient light sensing value includes:
Adjusting the backlight brightness of a display screen of the electronic equipment according to the target screen brightness value;
The maintaining the backlight brightness of the display screen unchanged comprises the following steps:
discarding the target screen brightness value, and maintaining the backlight brightness of the display screen unchanged.
6. An electronic device, comprising:
A processor, an ambient light sensor, an image sensor, and a display screen;
The ambient light sensor is used for sensing an ambient light sensing value of the environment, and the ambient light sensing value is used for representing the ambient light brightness of the environment where the ambient light sensor is located;
the image sensor is used for sensing a photosensitive parameter value of the environment, and the photosensitive parameter value is used for representing the environment brightness of the environment where the image sensor is positioned;
The processor is configured to determine, if the ambient light brightness of the environment where the electronic device is located is changed based on the photosensitive parameter value sensed by the image sensor under the condition that the angle of the electronic device is changed, and control the backlight brightness of the display screen based on the ambient light sensing value, where the photosensitive parameter change value exceeds a second threshold value to indicate that the ambient light brightness of the environment where the electronic device is located is changed; if the ambient light brightness of the environment where the electronic equipment is located is determined to be unchanged based on the photosensitive parameter value sensed by the image sensor, maintaining the backlight brightness of the display screen unchanged;
If the ambient light brightness of the environment where the electronic equipment is located is determined to be changed based on the photosensitive parameter value, and the ambient light brightness of the environment where the electronic equipment is located is determined to be unchanged based on the ambient light sensing value, and the backlight brightness of the display screen of the electronic equipment is adjusted based on the photosensitive parameter value.
7. The electronic device of claim 6, wherein a range of photosensitive angles of the image sensor is greater than a range of photosensitive angles of the ambient light sensor.
8. The electronic device of claim 6, the image sensor and the ambient light sensor each disposed on a panel on which a display of the electronic device is located.
9. A backlight adjustment apparatus comprising:
The first parameter obtaining unit is used for obtaining an ambient light sensing value sensed by the ambient light sensor, wherein the ambient light sensing value is used for representing the ambient light brightness of the environment where the electronic equipment is located;
a second parameter obtaining unit for obtaining the photosensitive parameter value sensed by the image sensor;
The backlight adjusting unit is used for determining that the ambient light brightness of the environment where the electronic equipment is located changes on the basis of the photosensitive parameter value sensed by the image sensor under the condition that the angle of the electronic equipment changes, and controlling the backlight brightness of the display screen of the electronic equipment on the basis of the ambient light sensing value; wherein a change value of the photosensitive parameter exceeding a second threshold value indicates that the brightness of the environment where the electronic equipment is located has a change
The backlight maintenance unit is used for determining that the brightness of the environment where the electronic equipment is located is unchanged based on the photosensitive parameter value sensed by the image sensor, and maintaining the backlight brightness of the display screen unchanged;
And the backlight adjusting unit is also used for determining that the environment brightness of the environment where the electronic equipment is positioned has change based on the photosensitive parameter value, determining that the environment brightness of the environment where the electronic equipment is positioned does not have change based on the environment light sensing value and adjusting the backlight brightness of the display screen of the electronic equipment based on the photosensitive parameter value.
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