CN109029720B - Illumination intensity detection method and device - Google Patents

Abstract

The present disclosure relates to a light intensity detection method and device. The method includes: intercepting the target content displayed in the backlight interference area of the screen of the terminal from the processing component of the terminal; the reflected light of the backlight emitted by the backlight interference area of the screen at the cover glass of the terminal is injected into the optical fingerprint sensor; the optical fingerprint sensor The sensor is arranged under the screen of the terminal; according to the target content displayed in the backlight interference area, the first illumination intensity of the reflected light of the backlight emitted by the backlight interference area at the cover glass is determined; the first illumination intensity of the light detected by the optical fingerprint sensor is obtained. Two light intensities; according to the first light intensity and the second light intensity of the light detected by the optical fingerprint sensor, determine the target light intensity of the ambient light in the environment where the terminal is located. The present disclosure can improve the accuracy and stability of light intensity measurement, effectively adjust screen backlight brightness, save battery power, and improve user experience.

Description

Illumination intensity detection method and device

technical field

The present disclosure relates to the field of smart devices, and in particular, to a method and device for detecting light intensity.

Background technique

The ambient light sensor (sensor) is used to measure the light intensity of the environment where the terminal is located, and adjust the backlight brightness of the terminal screen based on the ambient light intensity to save battery power; The screen or display consumes up to 30% of the device's total battery consumption. By setting the ambient light sensor in the terminal, when the ambient light sensor detects that the light intensity is high, the screen is automatically adjusted to high brightness; and when the ambient light sensor detects that the light intensity is low, the screen is automatically adjusted to low brightness. Automatically adjust the screen brightness to maximize the working time of the device's battery.

In the related art, the ambient light sensor is usually fixed under the cover glass on the top of the front side of the terminal.

SUMMARY OF THE INVENTION

In order to overcome the problems existing in the related art, embodiments of the present disclosure provide a method and device for detecting light intensity. The technical solution is as follows:

According to a first aspect of the embodiments of the present disclosure, a method for detecting light intensity is provided, including:

The target content displayed in the backlight interference area of the screen of the terminal is intercepted from the processing component of the terminal; the reflected light of the backlight emitted by the backlight interference area of the screen at the cover glass of the terminal enters the optical fingerprint sensor ; The optical fingerprint sensor is arranged below the screen of the terminal;

According to the target content displayed in the backlight interference area, determine the first illumination intensity of the reflected light of the backlight emitted by the backlight interference area at the cover glass;

obtaining the second illumination intensity of the light detected by the optical fingerprint sensor;

According to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor, the target illumination intensity of the ambient light in the environment where the terminal is located is determined.

In one embodiment, the processing component includes at least any one or a combination of the following: a central processing unit, a graphics processing unit, and a memory.

In one embodiment, the determining, according to the target content displayed in the backlight interference area, the first illumination intensity of the reflected light of the backlight emitted by the backlight interference area at the cover glass includes:

According to the target content displayed in the backlight interference area, determine the pixel value of each pixel in the backlight interference area;

According to the pixel value of each pixel in the backlight interference area, the first illumination intensity of the reflected light of the backlight emitted by the backlight interference area at the cover glass is determined.

In one embodiment, determining the target illumination intensity of ambient light in the environment where the terminal is located according to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor includes:

calculating the difference between the second illumination intensity of the light detected by the optical fingerprint sensor and the first illumination intensity;

The obtained difference value is determined as the target illumination intensity of the ambient light in the environment where the terminal is located.

In one embodiment, before the intercepting the target content displayed in the backlight interference area of the screen of the terminal from the processing component of the terminal, the method further includes:

acquiring the field of view of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen;

The backlight interference area of the screen is determined according to the field angle of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen.

In one embodiment, the method further includes:

Detecting a finger pressing operation for a preset fingerprint area;

When the finger pressing operation for the preset fingerprint area is not detected within the preset time period, the step of intercepting the target content displayed in the backlight interference area of the screen of the terminal from the processing component of the terminal is performed; or,

When a finger pressing operation on the preset fingerprint area is detected, the user fingerprint corresponding to the finger pressing operation is identified.

According to a second aspect of the embodiments of the present disclosure, there is provided an apparatus for detecting light intensity, including:

The interception module is used to intercept the target content displayed in the backlight interference area of the screen of the terminal from the processing component of the terminal; the reflected light of the backlight emitted by the backlight interference area of the screen at the cover glass of the terminal The optical fingerprint sensor is injected; the optical fingerprint sensor is arranged under the screen of the terminal;

a first determining module, configured to determine, according to the target content displayed in the backlight interference area, the first illumination intensity of the reflected light of the backlight emitted by the backlight interference area at the cover glass;

a first acquisition module, configured to acquire the second illumination intensity of the light detected by the optical fingerprint sensor;

The second determination module is configured to determine the target illumination intensity of ambient light in the environment where the terminal is located according to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor.

In one embodiment, the first determining module includes:

a first determination submodule, configured to determine the pixel value of each pixel in the backlight interference region according to the target content displayed in the backlight interference region;

The second determination submodule is configured to determine, according to the pixel values of each pixel in the backlight interference region, the first illumination intensity of the reflected light of the backlight emitted by the backlight interference region at the cover glass.

In one embodiment, the second determining module includes:

a calculation submodule, configured to calculate the difference between the second illumination intensity of the light detected by the optical fingerprint sensor and the first illumination intensity;

The third determination sub-module is configured to determine the obtained difference value as the target illumination intensity of ambient light in the environment where the terminal is located.

In one embodiment, the apparatus further includes:

a second acquisition module, configured to acquire the field of view of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen;

The third determination module is configured to determine the backlight interference area of the screen according to the field angle of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen.

In one embodiment, the apparatus further includes:

a detection module for detecting a finger pressing operation for a preset fingerprint area;

an execution module, configured to execute the interception of the target content displayed in the backlight interference area of the screen of the terminal from the processing component of the terminal when the finger pressing operation against the preset fingerprint area is not detected within the preset time period A step of;

The identification module is configured to identify the user fingerprint corresponding to the finger pressing operation when a finger pressing operation for the preset fingerprint area is detected.

According to a third aspect of the embodiments of the present disclosure, there is provided an apparatus for detecting light intensity, including:

processor;

memory for storing processor-executable instructions;

wherein the processor is configured to:

The target content displayed in the backlight interference area of the screen of the terminal is intercepted from the processing component of the terminal; the reflected light of the backlight emitted by the backlight interference area of the screen at the cover glass of the terminal enters the optical fingerprint sensor ; The optical fingerprint sensor is arranged below the screen of the terminal;

According to the target content displayed in the backlight interference area, determine the first illumination intensity of the reflected light of the backlight emitted by the backlight interference area at the cover glass;

obtaining the second illumination intensity of the light detected by the optical fingerprint sensor;

According to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor, the target illumination intensity of the ambient light in the environment where the terminal is located is determined.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium having computer instructions stored thereon, and when the instructions are executed by a processor, implement the steps of any one of the method embodiments in the first aspect above.

The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the technical solution intercepts the target content that interferes with the process of measuring the light intensity of the optical fingerprint sensor from the processing component of the terminal, and calculates the backlight interference area when displaying the target content. The first illumination intensity of the reflected light emitted by the backlight at the cover glass, on this basis, the target illumination intensity of the ambient light in the environment where the terminal is located can be obtained by offsetting the first illumination intensity from the second illumination intensity , so that the optical fingerprint sensor disposed under the screen can measure the illumination intensity of the ambient light in the environment where the terminal is located, which can improve the screen ratio of the terminal and overcome the process of measuring the light intensity caused by the reflected light of the screen backlight at the cover glass in the related art. It can improve the accuracy and stability of light intensity measurement, effectively adjust the brightness of the screen backlight, and save battery power, which can improve the user experience.

It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

FIG. 1 is a flow chart of a method for detecting light intensity according to an exemplary embodiment.

Fig. 2 is a flow chart of a method for detecting light intensity according to an exemplary embodiment.

Fig. 3 is a flow chart of a method for detecting light intensity according to an exemplary embodiment.

Fig. 4 is a flow chart of a method for detecting light intensity according to an exemplary embodiment.

Fig. 5 is a flowchart of a method for detecting light intensity according to an exemplary embodiment.

Fig. 6 is a block diagram of an apparatus for detecting light intensity according to an exemplary embodiment.

Fig. 7 is a block diagram of an apparatus for detecting light intensity according to an exemplary embodiment.

Fig. 8 is a block diagram of an apparatus for detecting light intensity according to an exemplary embodiment.

Fig. 9 is a block diagram of an apparatus for detecting light intensity according to an exemplary embodiment.

Fig. 10 is a block diagram of an apparatus for detecting light intensity according to an exemplary embodiment.

Fig. 11 is a block diagram of an apparatus for detecting light intensity according to an exemplary embodiment.

Fig. 12 is a block diagram of an apparatus according to an exemplary embodiment.

Fig. 13 is a block diagram of an apparatus according to an exemplary embodiment.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as recited in the appended claims.

The ambient light sensor is used to measure the light intensity of the environment where the terminal is located, and adjust the backlight brightness of the terminal screen based on the ambient light intensity, which can save battery power and maximize the working time of the device battery.

In the related art, the ambient light sensor is usually fixed under the cover glass on the top of the front of the terminal, which leads to an increase in the forehead of the mobile phone, which reduces the screen ratio, cannot meet the user's demand for a mobile phone with a high screen ratio, and affects the user experience. If the ambient light sensor is set under the screen, the ambient light sensor can also sense the light intensity of the environment in which there is no object such as a finger on the screen. However, the ambient light sensor also receives the screen backlight on the cover. The interference of light reflected from the glass makes the light intensity measured by the ambient light sensor very inaccurate, so that the screen backlight brightness cannot be adjusted effectively, resulting in waste of battery power and affecting user experience.

In order to solve the above problem, an embodiment of the present disclosure provides a method for detecting light intensity. The method includes: intercepting, from a processing component of a terminal, target content displayed in a backlight interference area of a screen of a terminal; backlight emitted from the backlight interference area of the screen The reflected light at the cover glass of the terminal enters the optical fingerprint sensor; the optical fingerprint sensor is arranged under the screen of the terminal; according to the target content displayed in the backlight interference area, the reflection of the backlight emitted by the backlight interference area on the cover glass is determined the first illumination intensity of the light; obtain the second illumination intensity of the light detected by the optical fingerprint sensor; determine the environment where the terminal is located according to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor The target light intensity of the light. In the embodiment of the present disclosure, the target content that interferes with the process of measuring the light intensity of the optical fingerprint sensor is intercepted from the processing component of the terminal, and the reflected light of the backlight on the cover glass emitted by the backlight interference area when the target content is displayed is calculated. The first illumination intensity, on this basis, the target illumination intensity of the ambient light in the environment where the terminal is located can be obtained by offsetting the first illumination intensity from the second illumination intensity, so that the optical fingerprint sensor arranged at the bottom of the screen can measure the light intensity of the terminal. The illumination intensity of the ambient light in the environment can increase the screen ratio of the terminal, overcome the interference of the reflected light of the screen backlight at the cover glass on the illumination intensity measurement process in the related art, and improve the accuracy and stability of the illumination intensity measurement. , effectively adjust the screen backlight brightness, save battery power and improve user experience.

On the basis of the above analysis, method embodiments of the present disclosure are introduced below.

Fig. 1 is a flow chart of a method for detecting light intensity according to an exemplary embodiment; the execution subject of the method may be a terminal, such as an electronic device such as a smart phone, a tablet computer, a camera, etc. As shown in Fig. 1 , the The method includes the following steps 101-104:

In step 101, the target content displayed in the backlight interference area of the screen of the terminal is intercepted from the processing component of the terminal; the reflected light of the backlight emitted by the backlight interference area of the screen at the cover glass of the terminal enters the optical fingerprint sensor; The optical fingerprint sensor is arranged under the screen of the terminal.

Exemplarily, the processing component includes at least any one or a combination of the following: a central processing unit, a graphics processing unit, or a memory.

For example, when the optical fingerprint sensor disposed under the screen of the terminal is used to measure the illumination intensity of ambient light in the environment where the terminal is located; when the screen is in a black screen state, the optical fingerprint sensor will only receive ambient light; When the light is on and the finger pressing operation against the preset fingerprint area is not detected, the reflected light from the backlight emitted by the backlight interference area of the screen and reflected at the cover glass of the terminal enters the optical fingerprint sensor, so that the optical fingerprint sensor not only Ambient light is received, and reflected light is also received.

The processing component of the terminal will process all the content displayed on the screen of the terminal; the present disclosure directly intercepts the target content displayed in the backlight interference area of the screen from the processing component of the terminal.

Exemplarily, before step 101 is performed, the backlight interference area of the screen may be pre-determined, for example, the viewing angle of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen are obtained; according to the viewing angle of the optical fingerprint sensor and the optical fingerprint sensor The distance from the screen determines the backlight interference area of the screen.

In step 102, according to the target content displayed in the backlight interference area, determine the first illumination intensity of the reflected light of the backlight emitted from the backlight interference area at the cover glass.

For example, calculate the first illumination intensity of the reflected light of the backlight on the cover glass emitted by the backlight interference area when the target content is displayed; optionally, according to the target content displayed in the backlight interference area, determine that the backlight interference area is displayed in The pixel value of each pixel point in the target content; according to the pixel value of each pixel point in the backlight interference area, the first illumination intensity of the reflected light of the backlight emitted by the backlight interference area at the cover glass is determined.

In step 103, the second illumination intensity of the light detected by the optical fingerprint sensor is acquired.

Exemplarily, the second light intensity refers to the light intensity of the mixed light of ambient light and reflected light detected by the optical fingerprint sensor.

In step 104, the target illumination intensity of the ambient light in the environment where the terminal is located is determined according to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor.

Exemplarily, on the basis of acquiring the first illumination intensity of the reflected light of the backlight at the cover glass from the backlight interference area and the second illumination intensity of the light detected by the optical fingerprint sensor, from the second illumination intensity The target illumination intensity of the ambient light in the environment where the terminal is located can be obtained by canceling the first illumination intensity; optionally, the difference between the second illumination intensity and the first illumination intensity of the light detected by the optical fingerprint sensor is calculated; The obtained difference is determined as the target illumination intensity of ambient light in the environment where the terminal is located.

The technical solution provided by the embodiments of the present disclosure is to intercept the target content that interferes with the process of measuring the light intensity of the optical fingerprint sensor from the processing component of the terminal, and calculate the backlight emitted by the backlight interference area when the target content is displayed on the cover plate. The first illumination intensity of the reflected light at the glass, on this basis, the target illumination intensity of the ambient light in the environment where the terminal is located can be obtained by offsetting the first illumination intensity from the second illumination intensity, so that the optical The fingerprint sensor can measure the illumination intensity of the ambient light in the environment where the terminal is located, which can improve the screen ratio of the terminal, overcome the interference of the reflected light of the screen backlight on the cover glass on the illumination intensity measurement process in the related art, and improve the illumination intensity measurement. The accuracy and stability of the screen can effectively adjust the screen backlight brightness and save battery power, which can improve the user experience.

FIG. 2 is a flowchart of a method for detecting light intensity according to an exemplary embodiment; as shown in FIG. 2 , on the basis of the embodiment shown in FIG. 1 , the method for detecting light intensity involved in the present disclosure includes the following steps 201 -205:

In step 201, the target content displayed in the backlight interference area of the screen of the terminal is intercepted from the processing component of the terminal; the reflected light of the backlight emitted by the backlight interference area of the screen at the cover glass of the terminal enters the optical fingerprint sensor; The optical fingerprint sensor is arranged under the screen of the terminal.

In step 202, according to the target content displayed in the backlight interference area, determine the first illumination intensity of the reflected light of the backlight emitted from the backlight interference area at the cover glass.

In step 203, the second illumination intensity of the light detected by the optical fingerprint sensor is acquired.

In step 204, the difference between the second illumination intensity of the light detected by the optical fingerprint sensor and the first illumination intensity is calculated.

In step 205, the obtained difference is determined as the target illumination intensity of ambient light in the environment where the terminal is located.

The technical solution provided by the embodiments of the present disclosure is to subtract the second illumination intensity of the light reflected by the backlight at the cover glass, which is emitted by the backlight interference area when the target content is displayed, from the second illumination intensity of the light detected by the optical fingerprint sensor. The target illumination intensity of the ambient light in the environment where the terminal is located is obtained, so that the optical fingerprint sensor disposed under the screen can measure the illumination intensity of the ambient light in the environment where the terminal is located, which overcomes the problem that the screen backlight in the related art is located on the cover glass. The reflected light at the location interferes with the light intensity measurement process, which can improve the accuracy and stability of the light intensity measurement.

FIG. 3 is a flowchart of a method for detecting light intensity according to an exemplary embodiment; as shown in FIG. 3 , on the basis of the embodiment shown in FIG. 1 , the method for detecting light intensity involved in the present disclosure includes the following steps 301 -305:

In step 301, the target content displayed in the backlight interference area of the screen of the terminal is intercepted from the processing component of the terminal; the reflected light of the backlight emitted by the backlight interference area of the screen at the cover glass of the terminal enters the optical fingerprint sensor; The optical fingerprint sensor is arranged under the screen of the terminal.

In step 302, the pixel value of each pixel in the backlight interference region is determined according to the target content displayed in the backlight interference region.

In step 303, according to the pixel value of each pixel point in the backlight interference area, the first illumination intensity of the reflected light of the backlight emitted from the backlight interference area at the cover glass is determined.

In step 304, the second illumination intensity of the light detected by the optical fingerprint sensor is acquired.

In step 305, the target illumination intensity of the ambient light in the environment where the terminal is located is determined according to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor.

The technical solution provided by the embodiments of the present disclosure is to obtain and analyze the target content displayed in the backlight interference area, determine the pixel value of each pixel in the backlight interference area, and then determine the reflection of the backlight emitted by the backlight interference area on the cover glass The first illumination intensity of the light. On this basis, the target illumination intensity of the ambient light in the environment where the terminal is located can be obtained by offsetting the first illumination intensity from the second illumination intensity, so that the optical fingerprint sensor arranged at the bottom of the screen can measure The illumination intensity of ambient light in the environment where the terminal is located, which improves the accuracy and stability of illumination intensity measurement.

FIG. 4 is a flowchart of a method for detecting light intensity according to an exemplary embodiment; as shown in FIG. 4 , on the basis of the embodiment shown in FIG. 1 , the method for detecting light intensity involved in the present disclosure includes the following steps 401 -408:

In step 401, it is judged whether a finger pressing operation for the preset fingerprint area is detected; when the finger pressing operation for the preset fingerprint area is not detected within the preset time period, go to step 402; When the finger in the fingerprint area is pressed, go to step 408 .

For example, the light intensity detection is performed only when the finger pressing operation is no longer detected within a specified period of time, so as to avoid misoperation of the finger.

In step 402, the target content displayed in the backlight interference area of the screen of the terminal is intercepted from the processing component of the terminal; the reflected light of the backlight emitted by the backlight interference area of the screen at the cover glass of the terminal enters the optical fingerprint sensor; The optical fingerprint sensor is arranged under the screen of the terminal.

In step 403, the pixel value of each pixel in the backlight interference region is determined according to the target content displayed in the backlight interference region.

In step 404, according to the pixel value of each pixel in the backlight interference region, determine the first illumination intensity of the reflected light of the backlight emitted from the backlight interference region at the cover glass.

In step 405, the second illumination intensity of the light detected by the optical fingerprint sensor is acquired.

In step 406, the difference between the second illumination intensity of the light detected by the optical fingerprint sensor and the first illumination intensity is calculated.

In step 407, the obtained difference is determined as the target illumination intensity of ambient light in the environment where the terminal is located; the process ends.

In step 408, the user fingerprint corresponding to the finger pressing operation is identified.

The technical solution provided by the embodiments of the present disclosure is to let the optical fingerprint sensor measure the illumination intensity of the ambient light in the environment where the terminal is located when the finger pressing operation for the preset fingerprint area is not detected within a preset period of time. When a finger is pressed in the preset fingerprint area, the optical fingerprint sensor is used to identify the user's fingerprint, thereby increasing the screen ratio of the terminal and improving the user experience.

Based on the light intensity detection method provided by the embodiments of the present disclosure, the optical fingerprint sensor may provide a fingerprint identification function or a light intensity detection function alone, or simultaneously enable a fingerprint identification function and a light intensity detection function. The following is an example description of a scenario in which the optical fingerprint sensor enables both the fingerprint recognition function and the light intensity detection function. FIG. 5 is a flowchart of a method for detecting light intensity according to an exemplary embodiment; as shown in FIG. 5 , the method includes the following steps 501-511:

In step 501, the light intensity detection function and the fingerprint identification function of the optical fingerprint sensor are enabled.

In step 502, the light intensity detection mode is turned on; go to step 503 and step 504 respectively.

In step 503 , output the second illumination intensity of the light detected by the optical fingerprint sensor, that is, the light-sensing value of the optical fingerprint sensor; go to step 506 .

In step 504, the displayed content is intercepted from the system side.

For example, the system side is such as a central processing unit, a graphics processing unit, or a memory.

In step 505, the display influence value is calculated.

In step 506, the photosensitive value of the optical fingerprint sensor is offset with the display influence value, and the illumination intensity of the ambient light is output.

In step 507, when a finger pressing operation for the preset fingerprint area is detected, the light intensity detection mode is turned off.

In step 508, it is determined whether the application needs to enable the fingerprint function: if yes, go to step 509; if not, go to step 511.

In step 509, the fingerprint identification mode is turned on.

In step 510, the fingerprint is scanned.

In step 511, when it is detected that the finger is left, go to step 502.

The technical solution provided by the embodiments of the present disclosure is that when the optical fingerprint sensor works as a light intensity sensor, the influence area of the display content on the sensor is intercepted at the system end, the interference of the screen is calculated by a set of fitting algorithms, and the interference of the screen is offset. , so as to obtain stable light intensity data, which can increase the screen ratio, save costs, reduce design difficulty, and improve user experience.

The following are the apparatus embodiments of the present disclosure, which can be used to execute the method embodiments of the present disclosure.

FIG. 6 is a block diagram of an apparatus for detecting light intensity according to an exemplary embodiment; as shown in FIG. 6 , the apparatus for detecting light intensity includes: an interception module 601 , a first determination module 602 , a first acquisition module 603 , and a first Two determination module 604, wherein:

The intercepting module 601 is configured to intercept the target content displayed in the backlight interference area of the screen of the terminal from the processing component of the terminal; the reflected light of the backlight emitted by the backlight interference area of the screen at the cover glass of the terminal enters the optical fingerprint sensor ; The optical fingerprint sensor is arranged under the screen of the terminal;

The first determining module 602 is configured to determine, according to the target content displayed in the backlight interference area, the first illumination intensity of the reflected light of the backlight emitted by the backlight interference area at the cover glass;

The first acquisition module 603 is configured to acquire the second illumination intensity of the light detected by the optical fingerprint sensor;

The second determination module 604 is configured to determine the target illumination intensity of ambient light in the environment where the terminal is located according to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor.

The apparatus provided by the embodiment of the present disclosure can be used to implement the technical solution of the embodiment shown in FIG. 1 , and the implementation manner and beneficial effects thereof are similar, which will not be repeated here.

In a possible implementation manner, as shown in FIG. 7 , the light intensity detection apparatus shown in FIG. 6 may further include configuring the first determination module 602 to include: a first determination sub-module 701 and a second determination sub-module 702 ,in:

The first determination sub-module 701 is configured to determine the pixel value of each pixel in the backlight interference region according to the target content displayed in the backlight interference region;

The second determination sub-module 702 is configured to determine the first illumination intensity of the reflected light of the backlight emitted from the backlight interference region at the cover glass according to the pixel value of each pixel in the backlight interference region.

In a possible implementation manner, as shown in FIG. 8 , the light intensity detection apparatus shown in FIG. 6 may further include configuring the second determination module 604 to include: a calculation sub-module 801 and a third determination sub-module 802 , wherein :

The calculation sub-module 801 is configured to calculate the difference between the second illumination intensity and the first illumination intensity of the light detected by the optical fingerprint sensor;

The third determination sub-module 802 is configured to determine the obtained difference value as the target illumination intensity of ambient light in the environment where the terminal is located.

In a possible implementation manner, as shown in FIG. 9 , the light intensity detection apparatus shown in FIG. 6 may further include: a second acquisition module 901 and a third determination module 902, wherein:

The second acquisition module 901 is configured to acquire the field of view of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen;

The third determining module 902 is configured to determine the backlight interference area of the screen according to the field angle of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen.

In a possible implementation manner, as shown in FIG. 10 , the light intensity detection apparatus shown in FIG. 6 may further include: a detection module 1001 , an execution module 1002 and an identification module 1003 , wherein:

The detection module 1001 is configured to detect a finger pressing operation for a preset fingerprint area;

The execution module 1002 is configured to perform the step of intercepting the target content displayed in the backlight interference area of the screen of the terminal from the processing component of the terminal when the finger pressing operation for the preset fingerprint area is not detected within the preset time period;

The identification module 1003 is configured to identify the user fingerprint corresponding to the finger pressing operation when a finger pressing operation on the preset fingerprint area is detected.

FIG. 11 is a block diagram of an apparatus 1100 for detecting light intensity according to an exemplary embodiment. The apparatus 1100 for detecting light intensity is applicable to a terminal, and the apparatus 1100 for detecting light intensity includes:

processor 1101;

memory 1102 for storing processor-executable instructions;

Wherein, the processor 1101 is configured to:

The target content displayed in the backlight interference area of the screen of the terminal is intercepted from the processing component of the terminal; the reflected light of the backlight emitted by the backlight interference area of the screen at the cover glass of the terminal enters the optical fingerprint sensor; the optical fingerprint sensor is arranged in Below the screen of the terminal;

According to the target content displayed in the backlight interference area, determine the first illumination intensity of the reflected light of the backlight emitted by the backlight interference area at the cover glass;

obtaining the second illumination intensity of the light detected by the optical fingerprint sensor;

According to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor, the target illumination intensity of the ambient light in the environment where the terminal is located is determined.

In one embodiment, the processing component includes at least any one or a combination of the following: a central processing unit, a graphics processing unit, and a memory.

In one embodiment, the above-mentioned processor 1101 can also be configured to:

Determine the pixel value of each pixel in the backlight interference area according to the target content displayed in the backlight interference area;

According to the pixel value of each pixel in the backlight interference area, the first illumination intensity of the reflected light of the backlight emitted from the backlight interference area at the cover glass is determined.

In one embodiment, the above-mentioned processor 1101 can also be configured to:

calculating the difference between the second illumination intensity and the first illumination intensity of the light detected by the optical fingerprint sensor;

The obtained difference value is determined as the target illumination intensity of the ambient light in the environment where the terminal is located.

In one embodiment, the above-mentioned processor 1101 can also be configured to:

Obtain the field of view of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen;

According to the field of view of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen, the backlight interference area of the screen is determined.

In one embodiment, the above-mentioned processor 1101 can also be configured to:

Detecting a finger pressing operation for a preset fingerprint area;

When the finger pressing operation for the preset fingerprint area is not detected within the preset time period, the step of intercepting the target content displayed in the backlight interference area of the screen of the terminal from the processing component of the terminal is performed; or,

When a finger pressing operation on the preset fingerprint area is detected, the user fingerprint corresponding to the finger pressing operation is identified.

Regarding the apparatus in the above-mentioned embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be described in detail here.

Fig. 12 is a block diagram of an apparatus according to an exemplary embodiment. For example, the apparatus 1200 may be a terminal or the like. 12, apparatus 1200 may include one or more of the following components: processing component 1202, memory 1204, power supply component 1206, multimedia component 1208, audio component 1210, input/output (I/O) interface 1212, sensor component 1214, and Communication component 1216.

The processing component 1202 is generally configured to control the overall operation of the apparatus 1200, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1202 can include one or more processors 1220 to execute instructions to perform all or some of the steps of the above-described methods. Additionally, processing component 1202 may include one or more modules that facilitate interaction between processing component 1202 and other components. For example, processing component 1202 may include a multimedia module to facilitate interaction between multimedia component 1208 and processing component 1202.

Memory 1204 is configured to store various types of data to support operations at device 1200 . Examples of such data include instructions for any application or method operating on device 1200, contact data, phonebook data, messages, pictures, videos, and the like. Memory 1204 may be implemented by any type of volatile or nonvolatile storage device or combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

Power component 1206 provides power to various components of device 1200. Power supply components 1206 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to device 1200 .

Multimedia component 1208 includes screens that provide an output interface between the device 1200 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swipe, and gestures on the touch panel. The touch sensor can sense not only the boundaries of the touch or swipe action, but also the duration and pressure associated with the touch or swipe action. In some embodiments, the multimedia component 1208 includes a front-facing camera and/or a rear-facing camera. When the apparatus 1200 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each of the front and rear cameras can be a fixed optical lens system or have focal length and optical zoom capability.

Audio component 1210 is configured to output and/or input audio signals. For example, audio component 1210 includes a microphone (MIC) that is configured to receive external audio signals when device 1200 is in operating modes, such as call mode, recording mode, and voice recognition mode. The received audio signal may be further stored in memory 1204 or transmitted via communication component 1216 . In some embodiments, audio component 1210 also includes a speaker for outputting audio signals.

The I/O interface 1212 provides an interface between the processing component 1202 and a peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: home button, volume buttons, start button, and lock button.

Sensor assembly 1214 includes one or more sensors for providing status assessment of various aspects of device 1200 . For example, the sensor assembly 1214 can detect the open/closed state of the device 1200, the relative positioning of the components, such as the display and keypad of the device 1200, the sensor assembly 1214 can also detect the position change of the device 1200 or a component of the device 1200, Presence or absence of user contact with device 1200, device 1200 orientation or acceleration/deceleration and temperature changes of device 1200. Sensor assembly 1214 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 1214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

Communication component 1216 is configured to facilitate wired or wireless communication between apparatus 1200 and other devices. Device 1200 may access wireless networks based on communication standards, such as WiFi, 2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 1216 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1216 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, apparatus 1200 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation is used to perform the above method.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as a memory 1204 including instructions, executable by the processor 1220 of the apparatus 1200 to accomplish the above method. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

Fig. 13 is a block diagram of an apparatus according to an exemplary embodiment. For example, the apparatus 1300 may be provided as a server. Apparatus 1300 includes a processing component 1302, which further includes one or more processors, and a memory resource, represented by memory 1303, for storing instructions executable by the processing component 1302, such as an application program. An application program stored in memory 1303 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 1302 is configured to execute instructions to perform the above-described methods.

The device 1300 may also include a power supply assembly 1306 configured to perform power management of the device 1300, a wired or wireless network interface 1305 configured to connect the device 1300 to a network, and an input output (I/O) interface 1308. Device 1300 may operate based on an operating system stored in memory 1303, such as Windows Server™, MacOS X™, Unix™, Linux™, FreeBSD™ or the like.

A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by the processor of the apparatus 1200 or the apparatus 1300, the apparatus 1200 or the apparatus 1300 can execute the following light intensity detection method, the method comprising:

The target content displayed in the backlight interference area of the screen of the terminal is intercepted from the processing component of the terminal; the reflected light of the backlight emitted by the backlight interference area of the screen at the cover glass of the terminal enters the optical fingerprint sensor; the optical fingerprint sensor is arranged in Below the screen of the terminal;

According to the target content displayed in the backlight interference area, determine the first illumination intensity of the reflected light of the backlight emitted by the backlight interference area at the cover glass;

obtaining the second illumination intensity of the light detected by the optical fingerprint sensor;

According to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor, the target illumination intensity of the ambient light in the environment where the terminal is located is determined.

In one embodiment, the processing component includes at least any one or a combination of the following: a central processing unit, a graphics processing unit, and a memory.

In one embodiment, according to the target content displayed in the backlight interference area, determining the first illumination intensity of the reflected light of the backlight emitted by the backlight interference area at the cover glass, including:

Determine the pixel value of each pixel in the backlight interference area according to the target content displayed in the backlight interference area;

According to the pixel value of each pixel in the backlight interference area, the first illumination intensity of the reflected light of the backlight emitted from the backlight interference area at the cover glass is determined.

In one embodiment, determining the target illumination intensity of ambient light in the environment where the terminal is located according to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor, including:

calculating the difference between the second illumination intensity and the first illumination intensity of the light detected by the optical fingerprint sensor;

The obtained difference value is determined as the target illumination intensity of the ambient light in the environment where the terminal is located.

In one embodiment, before intercepting the target content displayed in the backlight interference area of the screen of the terminal from the processing component of the terminal, the method further includes:

Obtain the field of view of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen;

According to the field of view of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen, the backlight interference area of the screen is determined.

In one embodiment, the method further includes:

Detecting a finger pressing operation for a preset fingerprint area;

When the finger pressing operation for the preset fingerprint area is not detected within the preset time period, the step of intercepting the target content displayed in the backlight interference area of the screen of the terminal from the processing component of the terminal is performed; or,

When a finger pressing operation on the preset fingerprint area is detected, the user fingerprint corresponding to the finger pressing operation is identified.

Other embodiments of the present disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or techniques in the technical field not disclosed by the present disclosure . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise structures described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (9)

1. An illumination intensity detection method, comprising:

intercepting target content displayed in a backlight interference area of a screen of a terminal from a processing component of the terminal; reflected light rays of backlight emitted by the backlight interference area of the screen at the position of cover plate glass of the terminal are emitted into the optical fingerprint sensor; the optical fingerprint sensor is arranged below a screen of the terminal;

determining a first illumination intensity of reflected light rays of the backlight at the cover glass, which are emitted by the backlight interference area, according to target content displayed in the backlight interference area;

acquiring a second illumination intensity of the light detected by the optical fingerprint sensor;

determining target illumination intensity of ambient light of the environment where the terminal is located according to the first illumination intensity and second illumination intensity of the light detected by the optical fingerprint sensor;

the determining, according to the target content displayed in the backlight interference region, a first illumination intensity of reflected light of the backlight at the cover glass emitted by the backlight interference region includes:

determining the pixel value of each pixel point in the backlight interference area according to the target content displayed in the backlight interference area;

determining a first illumination intensity of reflected light of the backlight at the cover plate glass, which is emitted by the backlight interference region, according to the pixel value of each pixel point in the backlight interference region;

before the intercepting, from a processing component of a terminal, target content displayed within a backlight interference region of a screen of the terminal, the method further comprises:

acquiring the field angle of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen;

and determining a backlight interference area of the screen according to the field angle of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen.

2. The method of claim 1, wherein the processing component comprises at least any one or combination of: central processing unit, graphic processor, and memory.

3. The method according to claim 1, wherein determining the target illumination intensity of the ambient light of the environment in which the terminal is located according to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor comprises:

calculating a difference value between a second illumination intensity of the light detected by the optical fingerprint sensor and the first illumination intensity;

and determining the obtained difference value as the target illumination intensity of the environment light of the environment where the terminal is located.

4. The method of claim 1, further comprising:

detecting a finger pressing operation aiming at a preset fingerprint area;

when the finger pressing operation aiming at a preset fingerprint area is not detected within a preset time length, the step of intercepting target content displayed in a backlight interference area of a screen of the terminal from a processing component of the terminal is executed; or,

when detecting that a finger of a preset fingerprint area presses, identifying a user fingerprint corresponding to the finger pressing.

5. An illumination intensity detection apparatus, comprising:

the intercepting module is used for intercepting target content displayed in a backlight interference area of a screen of the terminal from a processing component of the terminal; reflected light rays of backlight emitted by the backlight interference area of the screen at the position of cover plate glass of the terminal are emitted into the optical fingerprint sensor; the optical fingerprint sensor is arranged below a screen of the terminal;

the first determining module is used for determining first illumination intensity of reflected light rays of backlight at the cover plate glass, emitted by the backlight interference area, according to target content displayed in the backlight interference area;

the first acquisition module is used for acquiring second illumination intensity of the light rays detected by the optical fingerprint sensor;

the second determining module is used for determining the target illumination intensity of the ambient light of the environment where the terminal is located according to the first illumination intensity and the second illumination intensity of the light detected by the optical fingerprint sensor;

the first determining module includes:

the first determining submodule is used for determining the pixel value of each pixel point in the backlight interference region according to the target content displayed in the backlight interference region;

the second determining submodule is used for determining the first illumination intensity of the reflected light of the backlight at the cover plate glass, which is emitted by the backlight interference area, according to the pixel value of each pixel point in the backlight interference area;

the device further comprises:

the second acquisition module is used for acquiring the field angle of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen;

and the third determining module is used for determining the backlight interference area of the screen according to the field angle of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen.

6. The apparatus of claim 5, wherein the second determining module comprises:

the calculating submodule is used for calculating the difference value between the second illumination intensity and the first illumination intensity of the light rays detected by the optical fingerprint sensor;

and the third determining submodule is used for determining the obtained difference value as the target illumination intensity of the ambient light of the environment where the terminal is located.

7. The apparatus of claim 5, further comprising:

the detection module is used for detecting finger pressing operation aiming at a preset fingerprint area;

the terminal comprises an execution module, a processing module and a display module, wherein the execution module is used for intercepting target content displayed in a backlight interference area of a screen of the terminal from a processing component of the terminal when the finger pressing operation aiming at a preset fingerprint area is not detected within a preset time length;

the identification module is used for identifying the user fingerprint corresponding to the finger pressing operation when the finger pressing operation aiming at the preset fingerprint area is detected.

8. An illumination intensity detection apparatus, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to:

intercepting target content displayed in a backlight interference area of a screen of a terminal from a processing component of the terminal; reflected light rays of backlight emitted by the backlight interference area of the screen at the position of cover plate glass of the terminal are emitted into the optical fingerprint sensor; the optical fingerprint sensor is arranged below a screen of the terminal;

determining a first illumination intensity of reflected light rays of the backlight at the cover glass, which are emitted by the backlight interference area, according to target content displayed in the backlight interference area;

acquiring a second illumination intensity of the light detected by the optical fingerprint sensor;

determining target illumination intensity of ambient light of the environment where the terminal is located according to the first illumination intensity and second illumination intensity of the light detected by the optical fingerprint sensor;

the processor is further configured to: determining the pixel value of each pixel point in the backlight interference area according to the target content displayed in the backlight interference area; determining a first illumination intensity of reflected light of the backlight at the cover plate glass, which is emitted by the backlight interference region, according to the pixel value of each pixel point in the backlight interference region;

before the intercepting, from a processing component of the terminal, the target content displayed in a backlight interference area of a screen of the terminal, further comprising:

acquiring the field angle of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen;

and determining a backlight interference area of the screen according to the field angle of the optical fingerprint sensor and the distance between the optical fingerprint sensor and the screen.

9. A computer-readable storage medium having stored thereon computer instructions, which, when executed by a processor, carry out the steps of the method according to any one of claims 1 to 4.

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