CN111880886A

CN111880886A - Screen saver picture selection method and device and storage medium

Info

Publication number: CN111880886A
Application number: CN202010763090.5A
Authority: CN
Inventors: 曹哲; 王爱军; 刘丽丽; 杨志明; 钱丹旻
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2020-11-03
Anticipated expiration: 2040-07-31
Also published as: CN111880886B

Abstract

The disclosure relates to a method and a device for selecting a screen saver picture and a storage medium, which are applied to electronic equipment comprising a display module, wherein the method comprises the following steps: determining a first average accumulated brightness of a display area according to a first accumulated brightness of a single pixel in the display module within a preset time length, wherein the display module comprises N display areas, and N is greater than 1; determining a first brightness level of the nth display area according to the nth first average accumulated brightness; wherein N is a positive integer less than or equal to N; and selecting a corresponding screen saver picture to perform screen saving of the display module according to the N first brightness levels, wherein the brightness of the screen saver picture displayed in the nth display area is inversely related to the first brightness level of the nth display area. By the method, the screen burning phenomenon can be effectively reduced, and the loss of the display module is reduced.

Description

Screen saver picture selection method and device and storage medium

Technical Field

The present disclosure relates to the field of electronic devices, and in particular, to a method and an apparatus for selecting a screen saver picture, and a storage medium.

Background

Currently, most of electronic devices (e.g., smart phones) with display function use organic light-Emitting diodes (OLEDs) to manufacture display screens. The OLED screen has the advantages of self-luminescence, clearness, brightness, lightness, thinness, high response speed, wide viewing angle, low power consumption and the like, but the OLED screen is easy to generate a Burn-in phenomenon.

Burn-in is the permanent impression caused by the permanent afterimage of a certain image displayed on the display after a still image is displayed for a long time. However, there is no good method for preventing the burn-in phenomenon.

Disclosure of Invention

The disclosure provides a method and a device for selecting a screen saver picture and a storage medium.

According to a first aspect of the embodiments of the present disclosure, a method for selecting a screen saver picture is provided, which is applied to an electronic device including a display module, and the method includes:

determining a first average accumulated brightness of a display area according to a first accumulated brightness of a single pixel in the display module within a preset time length, wherein the display module comprises N display areas, and N is greater than 1;

determining a first brightness level of the nth display area according to the nth first average accumulated brightness; wherein N is a positive integer less than or equal to N;

and selecting a corresponding screen saver picture to perform screen saving of the display module according to the N first brightness levels, wherein the brightness of the screen saver picture displayed in the nth display area is inversely related to the first brightness level of the nth display area.

Optionally, the method further includes:

and determining the first accumulated brightness of the single pixel according to the electric signal values corresponding to the single pixel in different time periods within the preset time length.

Optionally, the method further includes:

dividing M first brightness intervals according to the first average accumulated brightness of each display area, wherein M is a positive integer greater than 1;

the determining a first brightness level of the nth display area according to the nth first average accumulated brightness comprises:

comparing the nth first average accumulated brightness with the brightness in the M first brightness intervals to determine a first brightness interval in which the nth first average accumulated brightness is located;

and determining the first brightness level of the nth display area according to the first brightness interval in which the nth first average accumulated brightness is positioned.

Optionally, the selecting a corresponding screen saver picture to perform the screen saver of the display module according to the N first brightness levels includes:

selecting the screen saver picture from the plurality of first candidate pictures according to the N first brightness levels and the second brightness levels of the plurality of first candidate pictures; wherein one of the first candidate pictures comprises N of the second brightness levels of N first image regions, and one of the first image regions corresponds to one of the display regions; the second brightness level of the nth first image region of the screen saver picture is inversely related to the first brightness level.

Optionally, the method further includes:

determining a second average accumulated brightness of an nth first image area according to a second accumulated brightness of pixels in the nth first image area of the first candidate picture;

determining the second brightness level of the nth first image region according to the nth second average accumulated brightness.

Optionally, the method further includes:

dividing M second brightness intervals according to the second average accumulated brightness of each first image area, wherein M is a positive integer greater than 1;

said determining said second brightness level for said nth first image region based on said nth second average cumulative brightness comprises:

comparing the nth second average accumulated brightness with the brightness in the M second brightness intervals to determine a second brightness interval in which the nth second average accumulated brightness is located;

and determining the second brightness level of the nth first image area according to the second brightness interval in which the nth second average accumulated brightness is positioned.

Optionally, the selecting the screen saver picture from the plurality of first candidate pictures according to the N first brightness levels and the second brightness levels of the plurality of first candidate pictures includes:

acquiring a first grade difference between a second brightness grade of an nth first image area and a first brightness grade of an nth display area of the first alternative picture;

calculating the sum of N first level differences;

and selecting the first candidate picture with the largest sum of the first grade differences from the plurality of first candidate pictures as the screen saver picture.

Optionally, the method further includes:

determining a third average accumulated brightness of sub-pixels belonging to the same color component in the nth display area according to a third accumulated brightness of sub-pixels of different colors of a single pixel in the nth display area within the preset time period;

determining the color component with the maximum third average accumulated brightness as the biased color of the nth display area;

the selecting a corresponding screen saver picture to perform the screen saver of the display module according to the N first brightness levels includes:

selecting a corresponding screen saver picture to perform screen saver of the display module according to the N biased colors and the N first brightness levels;

wherein a display color of the screen saver picture in the nth display area is different from the biased color of the nth display area.

Optionally, according to N the preferred color and N the first brightness level, select the corresponding screen saver picture to carry out the screen saver of the display module assembly, include:

if the biased color of the nth display area is blue, selecting a corresponding screen saver picture to perform screen saving of the display module according to the N first brightness levels and the biased color of the nth display area;

wherein the display color of the screen saver picture in the nth display area is different from the blue color.

sending the N first brightness levels to a server;

receiving the screen saver pictures fed back by the server according to the N first brightness levels;

and carrying out the screen saver of the display module by utilizing the screen saver picture.

sending the N first brightness levels and the N biased colors to a server;

receiving the screen saver pictures fed back by the server according to the N first brightness levels and the N biased colors;

According to a second aspect of the embodiments of the present disclosure, there is provided a method for selecting a screen saver picture, which is applied to a server including a plurality of second candidate pictures, the method including:

receiving N first brightness levels sent by the electronic equipment; wherein one of the first brightness levels corresponds to a display area of a display module of the electronic device, and N is greater than 1;

determining a screen saver picture from the plurality of second candidate pictures according to the N first brightness levels;

sending the screen saver picture to the electronic equipment; the area brightness of the screen saver picture displayed in the nth display area of the electronic equipment is negatively related to the first brightness level, and N is a positive integer less than or equal to N.

Optionally, the determining, according to the N first brightness levels, a screen saver picture from the second candidate pictures includes:

determining the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the third brightness levels of the plurality of second candidate pictures; wherein one of the second candidate pictures includes N of the third brightness levels of N second image regions, and one of the second image regions corresponds to one of the display regions; the third brightness level of the nth of the second image regions of the screen saver picture is inversely related to the first brightness level.

Optionally, the method further includes:

determining a fourth average accumulated brightness of the nth second image area according to a fourth accumulated brightness of pixels in the nth second image area of the second candidate picture;

determining the third brightness level of the nth second image region according to the nth fourth average cumulative brightness.

Optionally, the method further includes:

dividing M third brightness intervals according to the fourth average accumulated brightness of the second image area, wherein M is a positive integer greater than 1;

said determining said third brightness level for said nth said second image region based on said nth said fourth average cumulative brightness comprises:

comparing the nth fourth average accumulated brightness with the brightness in the M third brightness intervals to determine a third brightness interval in which the nth fourth average accumulated brightness is located;

and determining the third brightness level of the nth second image area according to a third brightness interval in which the nth fourth average accumulated brightness is positioned.

Optionally, the determining, according to the N first brightness levels and the third brightness levels of the plurality of second candidate pictures, the screen saver picture from the plurality of second candidate pictures includes:

acquiring a second level difference between a third brightness level of an nth second image area of the second candidate picture and a first brightness level of an nth display area;

calculating the sum of N second level differences;

and determining the second candidate picture with the largest sum of the second level differences as the screensaver picture from the second candidate pictures.

Optionally, the method further includes:

receiving N biased colors of N display areas sent by the electronic equipment;

determining a screen saver picture from the plurality of second candidate pictures according to the N first brightness levels, including:

determining the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the N biased colors;

Optionally, the determining the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the N biased colors includes:

if the biased color of the nth display area is blue, determining the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the biased color of the nth display area;

According to a third aspect of the embodiments of the present disclosure, there is provided a device for selecting a screen saver picture, which is applied to an electronic device including a display module, the device including:

the display module comprises a first determining module and a second determining module, wherein the first determining module is configured to determine a first average accumulated brightness of display areas according to a first accumulated brightness of a single pixel in the display module within a preset time length, the display module comprises N display areas, and N is greater than 1;

a second determining module configured to determine a first brightness level of the nth display area according to the nth first average accumulated brightness; wherein N is a positive integer less than or equal to N;

and the selection module is configured to select a corresponding screen saver picture to perform screen saving of the display module according to the N first brightness levels, wherein the brightness of the area of the screen saver picture displayed in the nth display area is inversely related to the first brightness level of the nth display area.

Optionally, the apparatus further comprises:

and the third determining module is configured to determine the first accumulated brightness of a single pixel according to the electric signal values corresponding to different time periods of the single pixel in the preset time length.

Optionally, the apparatus further comprises:

a first dividing module configured to divide M first luminance sections according to the first average accumulated luminance of each of the display regions, where M is a positive integer greater than 1;

the second determining module is specifically configured to compare the nth first average accumulated brightness with the brightness in the M first brightness intervals, and determine a first brightness interval in which the nth first average accumulated brightness is located; and determining the first brightness level of the nth display area according to the first brightness interval in which the nth first average accumulated brightness is positioned.

The selection module is specifically configured to select the screen saver picture from the plurality of first candidate pictures according to the N first brightness levels and the second brightness levels of the plurality of first candidate pictures; wherein one of the first candidate pictures comprises N of the second brightness levels of N first image regions, and one of the first image regions corresponds to one of the display regions; the second brightness level of the nth first image region of the screen saver picture is inversely related to the first brightness level.

Optionally, the apparatus further comprises:

a fourth determining module configured to determine a second average accumulated brightness of an nth first image region of the first candidate picture according to a second accumulated brightness of pixels in the nth first image region; determining the second brightness level of the nth first image region according to the nth second average accumulated brightness.

Optionally, the apparatus further comprises:

a second dividing module configured to divide M second luminance sections according to the second average cumulative luminance of each of the first image areas;

the second determining module is specifically configured to compare the nth second average accumulated luminance with luminances in M second luminance intervals, and determine a second luminance interval in which the nth second average accumulated luminance is located; and determining the second brightness level of the nth first image area according to the second brightness interval in which the nth second average accumulated brightness is positioned.

Optionally, the selecting module is specifically configured to obtain a first level difference between a second brightness level of an nth first image region of the first candidate picture and a first brightness level of an nth display region; calculating the sum of N first level differences; and selecting the first candidate picture with the largest sum of the first grade differences from the plurality of first candidate pictures as the screen saver picture.

Optionally, the apparatus further comprises:

a fifth determining module, configured to determine a third average accumulated luminance of sub-pixels belonging to the same color component in an nth display area according to a third accumulated luminance of sub-pixels of different colors of a single pixel in the nth display area within the preset time period; determining the color component with the maximum third average accumulated brightness as the biased color of the nth display area;

the second determining module is specifically configured to select a corresponding screen saver picture for screen saving of the display module according to the N biased colors and the N first brightness levels; wherein a display color of the screen saver picture in the nth display area is different from the biased color of the nth display area.

Optionally, the second determining module is specifically configured to select a corresponding screen saver picture for screen saving of the display module according to the N first brightness levels and the biased color of the nth display region if the biased color of the nth display region is blue; wherein the display color of the screen saver picture in the nth display area is different from the blue color.

Optionally, the selecting module includes:

the first sending module is configured to send the N first brightness levels to a server;

a first receiving module configured to receive the screen saver pictures fed back by the server according to the N first brightness levels; and carrying out the screen saver of the display module by utilizing the screen saver picture.

Optionally, the first sending module is specifically configured to send the N first brightness levels and the N biased colors to a server;

the first receiving module is specifically configured to receive the screen saver pictures fed back by the server according to the N first brightness levels and the N biased colors; and carrying out the screen saver of the display module by utilizing the screen saver picture.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a device for selecting a screen saver picture, which is applied to a server including a plurality of second candidate pictures, the device including:

the second receiving module is configured to receive the N first brightness levels sent by the electronic equipment; wherein one of the first brightness levels corresponds to a display area of a display module of the electronic device, and N is greater than 1;

a sixth determining module configured to determine a screen saver picture from the plurality of second candidate pictures according to the N first brightness levels;

the second sending module is configured to send the screen saver picture to the electronic equipment; the area brightness of the screen saver picture displayed in the nth display area of the electronic equipment is negatively related to the first brightness level, and N is a positive integer less than or equal to N.

Optionally, the sixth determining module is specifically configured to determine the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the third brightness levels of the plurality of second candidate pictures; wherein one of the second candidate pictures includes N of the third brightness levels of N second image regions, and one of the second image regions corresponds to one of the display regions; the third brightness level of the nth of the second image regions of the screen saver picture is inversely related to the first brightness level.

Optionally, the apparatus further comprises:

a seventh determining module configured to determine a fourth average accumulated brightness of an nth second image region according to a fourth accumulated brightness of pixels in the nth second image region of the second candidate picture; determining the third brightness level of the nth second image region according to the nth fourth average cumulative brightness.

Optionally, the apparatus further comprises:

a third dividing module configured to divide M third luminance sections according to the fourth average accumulated luminance of the second image region, where M is a positive integer greater than 1;

the seventh determining module is specifically configured to compare the nth fourth average accumulated luminance with luminances in M third luminance intervals, and determine a third luminance interval in which the nth fourth average accumulated luminance is located; and determining the third brightness level of the nth second image area according to a third brightness interval in which the nth fourth average accumulated brightness is positioned.

Optionally, the sixth determining module is specifically configured to obtain a second level difference between a third brightness level of an nth second image region of the second candidate picture and a first brightness level of an nth display region; calculating the sum of N second level differences; and determining the second candidate picture with the largest sum of the second level differences as the screensaver picture from the second candidate pictures.

Optionally, the apparatus further comprises:

a third receiving module configured to receive N biased colors of the N display areas sent by the electronic device;

the sixth determining module is specifically configured to determine the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the N biased colors; wherein a display color of the screen saver picture in the nth display area is different from the biased color of the nth display area.

Optionally, the sixth determining module is specifically configured to determine, if the biased color of the nth display area is blue, the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the biased color of the nth display area; wherein the display color of the screen saver picture in the nth display area is different from the blue color.

According to a fifth aspect of the embodiments of the present disclosure, there is provided a device for selecting a screen saver picture, including:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the method for selecting a screen saver picture as described in the first or second aspect.

According to a sixth aspect of embodiments of the present disclosure, there is provided a storage medium comprising:

the instructions in the storage medium, when executed by a processor of a device for selecting a screen saver picture, enable the device for selecting a screen saver picture to perform the method for selecting a screen saver picture as described in the first or second aspect above.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

in the embodiment of the disclosure, the electronic device calculates the display module component area, obtains a first average accumulated brightness of each display area according to a first accumulated brightness of a single pixel in the display module within a preset time period, and determines a first brightness level of each display area. Therefore, the electronic equipment can select the corresponding screen saver picture to perform the screen saver of the display module according to the first brightness levels of the display areas, wherein the area brightness of the screen saver picture displayed in the nth display area is in negative correlation with the first brightness level of the nth display area. On one hand, the method directly selects the picture with the display brightness negatively correlated with the first brightness level of the display area as the screen saver picture, and the judgment basis is simple and direct; on the other hand, the display module group is calculated for N display areas, the first brightness level of each display area is counted, so that the screen saver picture is selected, and compared with a mode of counting the brightness levels by taking the display module group as a whole to determine the screen saver picture, the screen saver picture selecting refinement degree can be improved.

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

Drawings

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

Fig. 1 is a first exemplary view of a television screen burn-in.

Fig. 2 is a second example of television screen burning.

Fig. 3 is a flowchart of a method for selecting a screen saver picture according to an embodiment of the present disclosure.

Fig. 4 is a first exemplary diagram of a screen saver picture in an embodiment of the present disclosure.

Fig. 5 is a second exemplary diagram of a screen saver picture in an embodiment of the disclosure.

Fig. 6 is a flowchart of a method for selecting a screen saver picture according to an embodiment of the present disclosure.

Fig. 7 is an interactive flowchart of a screen saver picture selecting method according to an embodiment of the present disclosure.

Fig. 8 is an exemplary diagram of a method for selecting a screen saver picture according to an embodiment of the present disclosure.

Fig. 9 is a first diagram illustrating a screen saver picture selecting apparatus according to an exemplary embodiment.

Fig. 10 is a diagram illustrating a screen saver picture selecting apparatus according to an exemplary embodiment.

FIG. 11 is a block diagram illustrating an electronic device apparatus in accordance with an example embodiment.

Fig. 12 is a block diagram illustrating a server apparatus according to an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Fig. 1 is a first diagram illustrating an example of television screen burning, and fig. 2 is a second diagram illustrating an example of television screen burning. As shown in fig. 1 and 2, the image sticking on the tv screen affects the display effect of the image. In order to improve the screen burning phenomenon of the display module, the embodiment of the disclosure provides a method for selecting a screen saver picture.

Fig. 3 is a flowchart of a method for selecting a screen saver picture according to an embodiment of the present disclosure, where as shown in fig. 3, the method for selecting a screen saver picture applied to an electronic device includes the following steps:

s11, determining a first average accumulated brightness of a display area according to a first accumulated brightness of a single pixel in the display module within a preset time period, wherein the display module comprises N display areas, and N is greater than 1.

S12, determining a first brightness level of the nth display area according to the nth first average accumulated brightness; wherein N is a positive integer less than or equal to N.

S13, selecting a corresponding screen saver picture to perform screen saving of the display module according to the N first brightness levels, wherein the brightness of the screen saver picture displayed in the nth display area is inversely related to the first brightness level of the nth display area.

In an embodiment of the present disclosure, an electronic device includes: a television, a mobile phone, or a tablet computer, etc., and the embodiments of the present disclosure are not limited.

The electronic equipment comprises a display module (display screen), when an image is displayed on the display screen, one pixel of the image corresponds to a single pixel of the display module, the electronic equipment acquires the pixel value of each pixel point of the image to be displayed in advance, and then the image is displayed by applying an electric signal value (such as a current value or a voltage value) to the single pixel of the display module. One pixel of the display module may be a light emitting unit, such as an OLED unit.

For a display device displaying gray-scale images, the display module includes OLED cells that can display white light, and one OLED cell may include one OLED lamp. The display module displays a gray image by applying an electric signal value to the OLED unit capable of displaying white light.

For a display device displaying color images, a single pixel of a display module includes a plurality of sub-pixels, one sub-pixel may be an OLED lamp, and one OLED unit includes a plurality of OLED lamps. By applying electric signal values with different sizes to each OLED lamp, the OLED lamps can emit light with various colors based on organic light-emitting materials coated on the OLED lamps or under the action of the color filter, so that the display module can display color information when displaying images. For example, in the RGB color mode, the OLED lamp may emit red, green, or blue light; in the RGBW color mode, the OLED lamp may emit red, green, blue or white light.

In step S11, the first accumulated luminance of the single pixel of the display module within the preset time period is the first accumulated luminance of the single pixel within the preset time period when the display module displays the image. The images displayed within the preset time period may refer to the same image or different images. In addition, the display module comprises N display areas, and each display area comprises at least one pixel.

In one embodiment, the method further comprises:

As mentioned above, when displaying an image, the electronic device displays the image by applying an electric signal value (e.g., providing a current value or a voltage value to the driving circuit) to a single pixel of the display module. In one embodiment, when the display module displays the same image within the preset time period, the values of the electrical signals may not be completely consistent in different time periods within the preset time period, considering that the values of the electrical signals may fluctuate.

In another embodiment, when the display module displays different images within a preset time period, and the values of the pixel points of the different images are different, the values of the electrical signals applied to the single pixel are different when the display module displays different images at different time periods.

For a display device displaying a gray-scale image, a first cumulative luminance of a single pixel for a preset time period may be calculated by the following formula:

PoL＝T1*L1+T2*L2+…+Tk*Lk (1)

wherein, Tk is the lighting time length of the pixel in the Tk time period; lk is the current value of the corresponding Tk time period, and the unit can be milliampere or microampere; the PoL is a first accumulated luminance of an o-th pixel in the display area, and o is a positive integer greater than 0.

If the display area includes O pixels, based on the determined first cumulative luminance of the single pixel, the first average cumulative luminance of the display area may be calculated by the following formula:

AL＝(P1L+P2L+…+PoL)/O (2)

for a display device that displays a color image, the first accumulated luminance of a single pixel over a preset time period refers to the accumulated luminance that is produced when sub-pixels included by the single pixel are collectively displayed over the preset time period. In this embodiment, the first cumulative luminance of a single pixel within the preset time period may be calculated by the following formula:

PoL＝T1*(L11+L21+…+Lm1)/M+T2*(L12+L22+…+Lm2)/M+

…+Tk*(L1k+L2k+…+Lmk)/M (3)

wherein, Tk is the lighting time length of the pixel in the Tk time period; lmk is the current value of the mth sub-pixel of the corresponding Tk time period. If a pixel includes M sub-pixels, (L1k + L2k + … + Lmk)/M is the average current value of the M sub-pixels included in a single pixel in the Tk period, and the unit may be ma or microamp. Wherein M is a positive integer greater than 0, and M is a positive integer between 1 and M. For example, for a display module using the RGB color mode, the size of M is 3.

For a display device displaying a color image, based on the first accumulated luminance PnL of a single pixel within a preset time period obtained by equation (3), the first average accumulated luminance of the display area can be obtained by equation (2).

In the embodiment of the disclosure, for N display areas of the display module, N first average accumulated luminances can be obtained. In step S12, a first luminance level of an nth display region is determined from an nth first average accumulated luminance among the N first average accumulated luminances. Then, for N first average accumulated luminances corresponding to N display regions, N first luminance levels may be determined.

It can be understood that, in this embodiment, the first accumulated luminance is determined according to the electrical signal values corresponding to different time periods of a single pixel within the preset time period, that is, the first accumulated luminance is determined based on the data (electrical signal value) of the driving circuit, so that the accuracy of obtaining the first accumulated luminance can be improved, and thus the first average accumulated luminance of each display area and the obtaining of the first luminance level are more accurate.

It should be noted that, in the embodiment of the present disclosure, when the first brightness level of the display area is determined according to the first average accumulated brightness, in an embodiment, the first brightness level of the display area may be determined by comparing brightness level sections where the first average accumulated brightness is located according to different brightness level sections set in advance.

In another embodiment, the brightness level interval may be temporarily divided according to the first average accumulated brightness, and the first brightness level of the display area may be determined according to the brightness level interval in which the first average accumulated brightness is located. Based on the embodiment, the method for selecting the screen saver picture further comprises the following steps:

step S12 includes:

In this embodiment, M first luminance sections are temporarily divided based on the first average accumulated luminance of the N display regions, and different first luminance sections correspond to different first luminance levels. The number M of the first luminance sections may be preset, and the larger M is, the more the first luminance sections that can be divided are, the more corresponding first luminance levels are.

In one embodiment, the first average accumulated luminances of the display regions may be added to obtain a first accumulated value of N display regions; and dividing M first brightness intervals according to the first accumulated value. Specifically, the average accumulated brightness of each display area is determined according to the first accumulated value and the number N of the display areas; and respectively determining corresponding first brightness intervals under different grades according to the preset M and the average accumulated brightness. For example, the first luminance interval corresponding to the first level is (0, average accumulated luminance), the first luminance interval corresponding to the second level is (average accumulated luminance, 2 × average accumulated luminance), and the first luminance interval corresponding to the mth level is ((M-1) × average accumulated luminance, M × average accumulated luminance).

For example, if there are 3 display regions (N equals 3), the first average cumulative luminance is: 3,1,5. The first accumulated value of 3 display regions is 9. If it is preset to divide 3 (M equals 3) first luminance sections, the average cumulative luminance of each display area is 3. The luminance value range of the first luminance interval of the first level is (0, 3), the luminance value range of the first luminance interval of the second level is (3, 6), and the luminance value range of the first luminance interval of the third level is (6, 9).

For the first average accumulated luminance of the first display region, the first luminance level of the first display region is the first level since 3 is in the first luminance section of the first level. Similarly, the first luminance level of the display region where the first average cumulative luminance is 1 is also the first level; the first luminance level of the display area where the first average accumulated luminance is 5 is the second level.

In one embodiment, the first average accumulated luminances of the N display areas are subtracted to divide the M first luminance sections. For example, there are 2(N is equal to 2) display areas, one display area is completely black (first average cumulative luminance is 0), and one display area is completely white (first average cumulative luminance 255). Therefore, if the difference between the first average cumulative luminances of the N display areas is 255, it indicates that one display area is completely white and one display area is completely black, and only 2(M equals 2) first luminance sections can be divided.

It is understood that, in this embodiment, since the determination of the first luminance section is temporarily divided based on the current first average cumulative luminance of each display region, the determination of the first luminance section can equalize the luminance consumption of each display region, and can more truly represent the luminance difference between each display region. Thereby, when the first luminance level of each display area is determined based on the first average accumulated luminance and each first luminance section, the division of the first luminance level can be made more effective.

In addition, in the embodiment of the disclosure, the number N of the display areas of the display module and the number of the luminance sections may be set as needed. When N and/or M is larger, the protection of the selected screen saver picture on the display module group is possibly more optimal; when N and/or M are set relatively small, the complexity of the calculation can be reduced. Therefore, the flexibility adjustment based on N and M can improve the intelligence of selecting the screen saver pictures.

In step S13, based on the first brightness levels of the display regions, the screen saver picture negatively correlated to the first brightness levels of the display regions can be selected for the screen saver of the display module. The negative correlation means that when the first brightness level of the display area is higher, the brightness of the area of the screen saver picture displayed in the display area is lower; the smaller the first brightness level of the display area, the greater the brightness of the area of the screen saver picture displayed in the display area.

It should be noted that the screen saver picture negatively correlated to the first brightness level of the display area includes: the brightness of the area of the screen saver picture displayed in the N display areas is in negative correlation with the first brightness levels of the N display areas; further comprising: the screen saver picture is displayed in N display areas, and the area brightness of a part of the display areas is inversely related to the first brightness level of the part of the display areas.

In this embodiment, there are instances where the screen saver picture is negatively correlated with the first brightness level of the partial display area because there may be sub-optimal solutions that do not satisfy that the brightness of the screen saver picture appears negatively correlated with the first brightness level of each display area. Of course, it may also be that the screen saver picture is selected such that it is negatively correlated to some of the N first brightness levels. For example, according to the highest first brightness level of the N first brightness levels, a candidate picture with the brightness negatively correlated with the highest first brightness level is selected as the screen saver picture, wherein the brightness of the area of the screen saver picture, which is displayed in the display area corresponding to the highest first brightness level, is negatively correlated with the highest first brightness level.

In addition, it should be noted that, in the embodiment of the disclosure, when the display module of the electronic device does not receive the display instruction of the picture within the preset time period, the step S13 of determining the screen saver picture to perform the screen saver of the display module is triggered. Based on step S13, it is possible to select a plurality of pictures that all meet the selection condition of the screen saver picture, and there may be a case where the selection condition of the screen saver picture cannot be selected. When the picture meeting the selection condition of the screen saver picture cannot be selected, the electronic equipment can randomly select a picture to carry out screen saver on the display module.

In one embodiment, step S13 includes:

In this embodiment, the first candidate image may be an image saved in the electronic device, or an image in another electronic device. When the first candidate picture is from other electronic devices, the electronic device may obtain second brightness levels of the first candidate pictures from the other electronic devices, and receive the screen saver picture from the other electronic devices after determining the screen saver picture according to the first brightness level and the second brightness level.

In the embodiment of the present disclosure, a first candidate picture is also divided into N first image regions, one first image region corresponds to one display region, and each first image region corresponds to one second brightness level. Therefore, the first candidate picture with the second brightness level negatively correlated with the first brightness level can be selected as the screen saver picture according to the corresponding relation of the areas.

Fig. 4 is a first exemplary diagram of a screen saver picture in an embodiment of the present disclosure, as shown in fig. 4, a screen partition number N of a television is 4, that is, a display module of the television includes 4 display regions. The television picture displayed on the screen is divided into two stages of high and low levels according to the average accumulated brightness of each display area, and the two stages have 2 first brightness levels. As shown in fig. 4, the display area in the upper left corner is relatively dark in color with a relatively high first brightness level, while the other display areas are relatively light in color with a uniform and relatively low first brightness level. As can be seen from fig. 4, the darker the display area, the greater the display brightness in the television screen, and the lighter the display area, the lower the display brightness in the television screen. It can also be seen that the screen saver picture is also divided into 4 first image areas, with 2 different second brightness levels. The first image region of the screen saver picture determined by the inverse matching (i.e., the corresponding region is negatively correlated) is relatively light in color and relatively low in second brightness level in the upper left corner, and the first image region is relatively dark in color and relatively high in second brightness level in the lower right corner. The darker the color of the first image region, the greater the display brightness of the screen saver picture; the lighter the color of the first image region, the less bright the display of the screen saver picture.

Fig. 5 is a second exemplary diagram of a screen saver picture in an embodiment of the disclosure, and as shown in fig. 5, the screen partition number N is 144, that is, the display module includes 144 display regions. The television picture displayed on the screen is divided into three high, medium and low levels, having 3 first brightness levels, according to the average cumulative brightness of each display area. The 3 first brightness levels are embodied by different color depths, the darker the color the higher the first brightness level. As can be seen from fig. 5, the display luminance in the television screen is larger for the display region with darker color. In addition, it can be seen that the screen saver picture is also divided into 144 first image regions, has 3 different second brightness levels, and is also represented by different color depths, and the darker the color, the higher the second brightness level is, and the darker the color, the first image region, the higher the display brightness of the screen saver picture is. The second brightness level of the first image region of the screen saver picture determined by the reverse matching (i.e., the corresponding region is negatively correlated) is negatively correlated with the first brightness level of the partial display region.

It can be understood that, in this embodiment, when the first candidate picture negatively correlated with the first brightness level of the display area is selected as the screen saver picture, the screen saver picture is determined according to the negative correlation of the brightness levels according to the second brightness level of the first candidate picture, so that the screen saver picture is selected more directly, and the selection efficiency of the screen saver picture can be improved.

It should be noted that, in the embodiment of the present disclosure, the negative correlation between the second brightness level and the first brightness level may be determined by a level difference between the second brightness level and the first brightness level.

In one embodiment, the selecting the screen saver picture from the plurality of first candidate pictures according to the N first brightness levels and the second brightness levels of the plurality of first candidate pictures includes:

calculating the sum of N first level differences;

In this embodiment, it should be noted that, calculating the sum of the N first level differences means summing up the first level differences after taking absolute values of the first level differences.

For example, when selecting the candidate picture with the second brightness level negatively correlated to the first brightness level, the first brightness level of the nth display area and the second brightness level of the nth first image area may be subtracted to obtain a level difference, and then the absolute values of the N level differences are added to obtain an accumulated value of the absolute values of the level differences. And obtaining the accumulated values of the first candidate pictures according to the number of the first candidate pictures, and finally selecting the first candidate picture with the maximum corresponding accumulated value as the screen saver picture.

In the embodiment, the screen saver picture is determined through the sum of the level differences, so that the screen saver picture can be selected more directly, and the selection efficiency of the screen saver picture can be improved.

In one embodiment, the method for selecting the screen saver picture further includes:

In this embodiment, the second average accumulated luminance of the first image area is obtained by the second accumulated luminance of the pixels in the first image area. Wherein the second cumulative luminance of the pixels in the first image region can be calculated by the following formula:

PY＝P1Y+P2Y+…+PjY (4)

wherein PjY is the brightness of the jth pixel in the first image region, and j is a positive integer greater than 0; if a first image region includes J pixels, PY is the second cumulative luminance of the J pixels in the first image region.

It should be noted that, in the embodiment of the present disclosure, the luminance of the jth pixel in the first image region may be the luminance obtained in the YUV color mode. In the YUV color mode, "Y" represents brightness, i.e., a gray scale value, "U" represents color, "V" represents saturation of color, and "U" and "V" collectively specify the color of a pixel. In the disclosed embodiment, the value of the "Y" component in YUV color mode of the jth pixel in the first image region is used to obtain PjY.

Based on the determined second cumulative luminance of the first image region, the second average cumulative luminance of the first image region may be calculated by the following formula:

BL＝PY/J (5)

in this embodiment, for N first image regions of the first candidate picture, N second average cumulative luminances may be obtained. The first luminance level of the nth first image area is determined based on the nth second average accumulated luminance among the N second average accumulated luminances. Then, for N second average accumulated luminances corresponding to N first image areas, N second luminance levels can be determined.

In the embodiment of the present disclosure, when determining the second brightness level of the first candidate picture, N second average accumulated brightnesses of N first image regions are determined first, and then the N second brightness levels are determined based on the N second average accumulated brightnesses, that is, a method similar to the method for determining the first brightness level of the display region is adopted.

It can be understood that the effectiveness of selecting the screen saver picture can be improved by determining the second brightness level in a similar way as the first brightness level, i.e. unifying the acquisition rules of the independent variable (first brightness level) and the dependent variable (second brightness level) in the negative correlation determination process.

In the embodiment of the present disclosure, when the second luminance level of the first image area is determined according to the second average accumulated luminance, in one embodiment, the second luminance level of the first image area may be determined according to a different luminance level section set in advance.

In another embodiment, the luminance level section may be temporarily divided according to the second average accumulated luminance, and the second luminance level of the first image area may be determined according to the luminance level section in which the second average accumulated luminance is located. Based on the embodiment, the method for selecting the screen saver picture further comprises the following steps:

In this embodiment, M second luminance sections are temporarily divided based on the second average accumulated luminance of the N first image areas, different second luminance sections corresponding to different second luminance levels. The number M of the second brightness intervals is the same as that of the first brightness intervals.

It is to be understood that, in this embodiment, on the one hand, dividing the same number of second luminance intervals in the same manner as the first luminance interval dividing method improves the contrast of the second luminance level with the first luminance level. On the other hand, the second brightness interval is determined by comprehensively considering the second average accumulated brightness of all the first image areas, and the second brightness level is further determined, so that after the screen saver picture is determined based on the negative correlation relationship between the second brightness level and the first brightness level, the brightness consumption of each display area in each display module can be uniform when the screen saver of the display module is carried out by using the screen saver picture.

step S13 includes:

As mentioned above, for a display device displaying a color image, a single pixel of a display module comprises a plurality of sub-pixels, each of which can emit light of a different color. In this embodiment, the third cumulative luminance of a color component sub-pixel of a single pixel in a display area within a preset time period can be calculated by the following formula:

PomL＝T1*Lm1+T2*Lm2+…+Tk*Lmk (6)

wherein, Tk is the lighting time length of the pixel in the Tk time period; lmk is the current value of the mth sub-pixel of the corresponding Tk time period, which can be in milliampere or microampere, and m is a positive integer greater than 0. The PomL is a third accumulated luminance of an mth sub-pixel of an mth pixel in the display area, and o is a positive integer greater than 0.

If the display area includes O pixels, based on the determined third accumulated luminance of the mth sub-pixel of the mth pixel, the third average accumulated luminance of the sub-pixels of the same color component in the nth display area may be calculated by the following formula:

AmL＝(P1mL+P2mL+…+PomL)/O (7)

for example, for a display module using the RGB color mode, m is 3. When m is equal to 1, A1L may be a third average accumulated luminance of the red component sub-pixels in the nth display region within a preset time period; when m is equal to 2, A2L may be a third average accumulated luminance of the green component sub-pixels in the nth display region within a preset time period; when m is equal to 3, A3L may be a third average accumulated luminance of the blue component sub-pixel in the nth display region within a preset time period.

And comparing the sizes of the third average accumulated brightness of the sub-pixels of different colors in the same display area, namely determining the color component with the maximum third average accumulated brightness as the biased color of the display area. For example, if A3L is greater than A1L and A2L, the biased color of the region is blue.

For N display areas of the display module, N biased colors can be determined. In step S13, when the screen saver picture is selected according to the N first brightness levels, N biased colors may be further combined. The screen saver picture determined based on the N first brightness levels and the N biased colors not only meets the condition that the area brightness displayed in the nth display area is in negative correlation with the first brightness level of the nth display area, but also meets the condition that the display color in the nth display area is different from the biased color of the nth display area.

As described above, when the screen saver picture is selected from the first candidate pictures based on the first brightness level, the first candidate pictures may all meet the selection condition of the screen saver picture. On the basis, the N biased colors are combined, and the first candidate picture with the display color in the nth display area and the biased color in the nth display area different from each other can be finally screened out to be used as the screen saver picture.

The display color in the nth display region is different from the bias color in the nth display region, and includes: the display color of the screen saver picture displayed in the N display areas is different from the biased color of the N display areas; further comprising: the screen saver picture is displayed in N display areas, and the display color of a part of the display areas is different from the biased color of the part of the display areas.

It can be understood that, in the embodiment of the present disclosure, for a display device capable of displaying a color image, on the basis of a first brightness level, a first candidate picture different from a biased color is determined as a screen saver picture in combination with the biased color of a display area, so that the occurrence of a phenomenon that sub-pixels (OLED lamps) are damaged due to the fact that a part of the display area displays the same color for a long time can be reduced, and balanced consumption of each sub-pixel is realized.

In an embodiment, the selecting a corresponding screen saver picture for the screen saver of the display module according to the N biased colors and the N first brightness levels includes:

In this embodiment, the blue light source has a shorter wavelength, and thus the attenuation of the blue light emitting sub-pixel is more severe than that of the other color light emitting sub-pixels at the same luminance. Therefore, on the basis of the first luminance level, a picture that is displayed in a corresponding display region and is not blue in color (e.g., red or green) may be selected as a screen saver picture for a display region whose color is biased to blue based on the characteristics of the blue light source.

It will be appreciated that in this embodiment, on the basis of the first brightness level, the color screening is performed for blue according to the biased color of the display area, thereby further reducing the loss of the sub-pixel (OLED lamp) emitting blue light.

In the embodiment of the disclosure, the electronic device can determine the screen saver picture from the first candidate pictures based on the first brightness level, and can acquire the screen saver picture from the second candidate pictures of the server based on the first brightness level.

In one embodiment, step S13 includes:

sending the N first brightness levels to a server;

In this embodiment, since the server stores rich picture resources, the electronic device sends the first brightness level to the server, so that the screen saver picture acquired from the server may protect the display module more finely. In addition, the screen saver picture is determined by the server, the selection speed of the screen saver picture can be increased based on the hardware advantage of the server side, and the power consumption of the electronic equipment side can be reduced.

In an embodiment, the selecting a corresponding screen saver picture for the screen saver of the display module according to the N first brightness levels includes:

sending the N first brightness levels and the N biased colors to a server;

In the implementation, the first brightness level and the biased color of each display area are sent to the server to obtain the screen saver picture, so that the display module can be better protected.

In the embodiment of the disclosure, the electronic device calculates the display module component area, obtains a first average accumulated brightness of each display area according to a first accumulated brightness of a single pixel in the display module within a preset time period, and determines a first brightness level of each display area. Therefore, the electronic equipment can select the corresponding screen saver picture to perform the screen saver of the display module according to the first brightness levels of the display areas, wherein the area brightness of the screen saver picture displayed in the nth display area is in negative correlation with the first brightness level of the nth display area. On one hand, the method directly selects the picture with the display brightness negatively correlated with the first brightness level of the display area as the screen saver picture, and the judgment basis is simple and direct; on the other hand, the display module group is calculated for N display areas, the first brightness level of each display area is counted, so that the screen saver picture is selected, and compared with a mode that the brightness level is counted as a whole to select the screen saver picture, the screen saver picture selecting refinement degree can be improved.

Fig. 6 is a flowchart of a method for selecting a screen saver picture shown in the embodiment of the present disclosure, and as shown in fig. 6, the method is applied to a server including a plurality of second candidate pictures, and the method for selecting a screen saver picture applied to the server includes the following steps:

s21, receiving N first brightness levels sent by the electronic equipment; and one first brightness level corresponds to one display area of a display module of the electronic equipment, and N is greater than 1.

S22, determining a screen saver picture from the plurality of second candidate pictures according to the N first brightness levels; the area brightness of the screen saver picture displayed in the nth display area of the electronic equipment is negatively related to the first brightness level, and N is a positive integer less than or equal to N.

And S23, sending the screen saver picture to the electronic equipment.

In this step S21, the server may receive N first brightness levels transmitted by the electronic device. The N first brightness levels of the electronic device may be determined according to a first average accumulated brightness of pixels in each display area when a display module of the electronic device displays the same image or different images within a preset time period.

Exemplarily, the electronic device compares brightness level intervals in which the first average accumulated brightness is located according to M preset brightness level intervals to determine a first brightness level of the display area; or the electronic equipment temporarily divides M brightness level intervals according to the first average accumulated brightness, and determines the first brightness level of the display area according to the brightness level interval in which the first average accumulated brightness is located.

After receiving the N first brightness levels, the server may determine a screen saver picture from the plurality of second candidate pictures according to the N first brightness levels, and send the screen saver picture to the electronic device. It should be noted that the screen saver picture is used for displaying of the electronic device to protect the display module. A screen saver picture determined by a server to be negatively correlated to a first brightness level, comprising: the method comprises the steps that the area brightness of the screen saver picture displayed in N display areas of the electronic equipment is in negative correlation with first brightness levels of the N display areas; further comprising: the screen saver picture is displayed in N display areas of the electronic equipment, and the area brightness of a part of the display areas is inversely related to the first brightness level of the part of the display areas.

In this embodiment, the server directly selects the screen saver picture meeting the conditions according to the first brightness level of each display area, and the judgment is simple and direct. In addition, since the server stores abundant second alternative pictures, after receiving the first brightness level, the server determines that the screen saver picture can protect the display module of the electronic device more finely; and based on the hardware advantages of the server side, the selection speed of the screen saver picture can be increased.

In one embodiment, the determining a screen saver picture from the second candidate pictures according to the N first brightness levels includes:

In this embodiment, a second candidate picture is also divided into N second image regions, one second image region corresponding to one display region, and each second image region corresponding to one third brightness level. Therefore, the second candidate picture with the third brightness level negatively correlated with the first brightness level can be selected as the screen saver picture according to the corresponding relation of the areas.

It can be understood that, in this embodiment, when the second candidate picture negatively correlated with the first brightness level of the display area is selected as the screen saver picture, the screen saver picture is determined according to the negative correlation of the brightness levels according to the third brightness level of the second candidate picture, so that the screen saver picture is selected more directly, and the selection efficiency of the screen saver picture can be improved.

In an embodiment, the method for selecting a screen saver picture applied to the server further includes:

In this embodiment, a fourth average accumulated luminance for the second image region is obtained by a fourth accumulated luminance for pixels within the second image region. The electronic device end formula (4) can be referred to for determining the fourth accumulated brightness of the pixels in the second image area, and the parameter formula (5) can be referred to for determining the fourth average accumulated brightness, which is not repeated in the embodiments of the present disclosure.

The server determines a third luminance level of the nth second image region according to an nth fourth average cumulative luminance among the N fourth average cumulative luminances. Then, for N fourth average accumulated luminances corresponding to N second image areas, N fourth luminance levels may be determined.

In the embodiment of the present disclosure, when determining the third luminance level of the second candidate picture, N fourth average accumulated luminances of N second image regions are determined first, and then N third luminance levels are determined based on the N fourth average accumulated luminances, that is, a method similar to the method for determining the first luminance level of the display region is adopted.

It can be understood that the server can improve the effectiveness of selecting the screen saver picture by determining the third brightness level by adopting a method similar to the method for determining the first brightness level, i.e. unifying the acquisition rules of the independent variable (the first brightness level) and the dependent variable (the third brightness level) in the negative correlation determination process.

In the embodiment of the present disclosure, when the third luminance level of the second image region is determined according to the fourth average accumulated luminance, in one embodiment, the third luminance level of the second image region may be determined according to a different luminance level section set in advance.

In another embodiment, the luminance level section may be temporarily divided according to a fourth average accumulated luminance, and the third luminance level of the second image area may be determined according to the luminance level section in which the fourth average accumulated luminance is located.

In one embodiment, the method further comprises:

In this embodiment, M third luminance sections are temporarily divided based on the sum of the fourth average cumulative luminance of the N second image areas, different third luminance sections corresponding to different third luminance levels. The number M of the third luminance sections may be the same as the number of the first luminance sections.

It can be understood that, in this embodiment, the third luminance interval is determined by comprehensively considering the fourth average cumulative luminance of all the second image areas, and the third luminance level is further determined, so that after the screen saver picture is determined based on the negative correlation between the third luminance level and the first luminance level, when the screen saver of the display modules is performed by using the screen saver picture, the luminance consumption of each display area in each display module can be equalized.

It should be noted that, in the embodiment of the present disclosure, the negative correlation between the third brightness level and the first brightness level may be determined by a level difference between the third brightness level and the first brightness level.

In one embodiment, the determining the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the third brightness levels of the plurality of second candidate pictures includes:

calculating the sum of N second level differences;

In this embodiment, the screen saver picture is determined by the sum of the second level differences, so that the screen saver picture can be selected more directly, and the screen saver picture selection efficiency can be improved. It should be noted that, calculating the sum of the N second level differences means summing the absolute values of the second level differences.

In one embodiment, the method further comprises:

receiving N biased colors of N display areas sent by the electronic equipment;

In this embodiment, the electronic device side determines the magnitude of the third average cumulative luminance of the sub-pixels divided by different colors in the same display region, that is, the color component with the maximum third average cumulative luminance as the biased color of the display region. The determination of the third average accumulated brightness refers to equation (6) and equation (7) of the electronic device side, and the description of this embodiment is omitted.

In an embodiment of the disclosure, the server may also receive N biased colors sent by the electronic device. The server determines the screen saver picture based on the N first brightness levels and the N biased colors, and the screen saver picture not only meets the condition that the brightness of the area displayed in the nth display area is in negative correlation with the first brightness level of the nth display area, but also meets the condition that the display color of the nth display area is different from the biased color of the nth display area.

As described above, when the screen saver picture is selected from the second candidate pictures based on the first brightness level, the second candidate pictures may all meet the selection condition of the screen saver picture. On the basis, combining N biased colors, a second candidate picture with the display color of the nth display area different from the biased color of the nth display area can be finally screened out to be used as a screen saver picture.

It can be understood that, in the embodiment of the present disclosure, for a display device capable of displaying a color image, a server determines, based on a first brightness level and in combination with a biased color of a display area, a second candidate picture different from the biased color as a screen saver picture, which can reduce the occurrence of a phenomenon that a sub-pixel (OLED lamp) is damaged due to a part of the display area displaying the same color for a long time, and achieve balanced consumption of each sub-pixel.

In one embodiment, the determining the screen saver picture from the second candidate pictures according to the N first brightness levels and the N biased colors includes:

In this embodiment, the blue light source has a shorter wavelength, and thus the attenuation of the blue light emitting sub-pixel is more severe than that of the other color light emitting sub-pixels at the same luminance. Therefore, on the basis of the first brightness level, the server may select, for a display region biased to be blue in color, a picture displayed in the corresponding display region in a color other than blue (e.g., red or green) as a screen saver picture, based on the characteristics of the blue light source.

Fig. 7 is an interactive flowchart of a method for selecting a screen saver picture according to an embodiment of the present disclosure, and as shown in fig. 7, the method for selecting a screen saver picture applied to an electronic device and a server includes the following steps:

s31, the electronic device determines a first average accumulated brightness of the display area according to a first accumulated brightness of a single pixel in the display module within a preset time period, wherein the display module comprises N display areas, and N is greater than 1.

S32, the electronic equipment determines a first brightness level of the nth display area according to the nth first average accumulated brightness; wherein N is a positive integer less than or equal to N.

And S33, the electronic equipment sends the N first brightness levels to a server.

S34, the server determines a screen saver picture from the second candidate pictures according to the N first brightness levels; the area brightness of the screen saver picture displayed in the nth display area of the electronic equipment is negatively related to the first brightness level, and N is a positive integer less than or equal to N.

And S35, the server sends the screen saver picture to the electronic equipment.

And S36, the electronic equipment utilizes the screen saver picture to carry out screen saver of the display module.

In the embodiment of the disclosure, the electronic device calculates the display module component area, obtains the first average accumulated brightness of each display area according to the first accumulated brightness of a single pixel in the display module within the preset time, and determines the first brightness level of each display area so as to select the screen saver picture. Secondly, the electronic equipment sends the first brightness level to the server, and the server side determines the screen saver picture according to the first brightness level; on the other hand, since the server stores the abundant second candidate pictures, after the server receives the first brightness level, the determined screen saver picture can protect the display module of the electronic device more finely, and the selection speed of the screen saver picture can be increased based on the advantage of hardware on the server side.

Fig. 8 is an exemplary diagram of a method for selecting a screen saver picture according to an embodiment of the present disclosure, and as shown in fig. 8, the method for selecting a screen saver picture includes the following steps:

s41, the television acquires the average brightness of the nth display area; the television screen of the television is divided into N display areas.

In this embodiment, the average brightness of the nth display region is a first average accumulated brightness of the nth display region of the television within a preset time period.

And S42, the television detects whether the N display areas are traversed or not. If not, go to step S41; if yes, go to step S43.

And S43, the television is graded according to the average brightness of the display areas to obtain the gear of each display area.

In this embodiment, the step, i.e. the first brightness level, of the display area is determined. After the television set obtains the average brightness (the first average accumulated brightness) of the N display areas in a traversing manner, the first brightness level of each display area can be determined according to the average brightness of each display area.

And S44, the television detects whether the screen saver is triggered. If not, go to step S42; if yes, go to step S45.

And S45, the television matches the gear of each display area with the gear of the first alternative picture.

In this embodiment, the gear of the first candidate picture refers to the second brightness level of the first candidate picture. And the television matches the gear of each display area with the gear of the first alternative picture, namely, matches the first brightness level with the second brightness level. Wherein matching is whether the first brightness level and the second brightness level are inversely related.

And S46, the television determines whether the matching is successful. If yes, go to step S47; if not, go to step S48.

And S47, the television enters a screen saver and displays the successfully matched pictures.

In this embodiment, if there is a picture in which the second brightness level of the first candidate picture and the first brightness level of the display area are negatively correlated, the screened screen saver picture is displayed.

And S48, enabling the television to enter a screen saver and randomly displaying the pictures.

In this embodiment, if there is no picture in which the second brightness level of the first candidate picture and the first brightness level of the display area are negatively correlated, one first candidate picture is randomly displayed.

In the embodiment of the disclosure, the television obtains the average brightness (first average accumulated brightness) of each display area and performs grading, so that whether a matched picture is subjected to screen protection can be detected according to the gear (first brightness level). The matching is the brightness of the area of the screen saver picture displayed in the nth display area, and is negatively related to the gear of the nth display area. On one hand, the method directly selects the picture with the display brightness negatively related to the gear of the display area as the screen saver picture, and the judgment basis is simple and direct; on the other hand, the method is divided into N display areas for calculation, and when N is larger, the protection of the selected screen saver picture on the display screen of the television is possibly better, so that the algorithm complexity and the accuracy can be adjusted based on the number of the set display areas, and the screen saver picture selection is more intelligent.

Fig. 9 is a first diagram illustrating a screen saver picture selecting apparatus according to an exemplary embodiment. Referring to fig. 9, the device for selecting a screen saver picture is applied to an electronic device including a display module, and the device includes:

a first determining module 101, configured to determine a first average accumulated brightness of a display area according to a first accumulated brightness of a single pixel in the display module within a preset time period, where the display module includes N display areas, and N is greater than 1;

a second determining module 102 configured to determine a first brightness level of the nth display area according to the nth first average accumulated brightness; wherein N is a positive integer less than or equal to N;

a selecting module 103, configured to select a corresponding screen saver picture for screen saving of the display module according to the N first brightness levels, where the brightness of the area where the screen saver picture is displayed in the nth display area is inversely related to the first brightness level of the nth display area.

Optionally, the apparatus further comprises:

a third determining module 104 configured to determine the first accumulated brightness of a single pixel according to the electrical signal values corresponding to different time periods of the single pixel within the preset time period.

Optionally, the apparatus further comprises:

a first dividing module 105 configured to divide M first luminance sections according to the first average accumulated luminance of each of the display regions, where M is a positive integer greater than 1;

the second determining module 102 is specifically configured to compare the nth first average accumulated luminance with luminances in M first luminance intervals, and determine a first luminance interval in which the nth first average accumulated luminance is located; and determining the first brightness level of the nth display area according to the first brightness interval in which the nth first average accumulated brightness is positioned.

Optionally, the selecting module 103 is specifically configured to select the screen saver picture from the plurality of first candidate pictures according to the N first brightness levels and the second brightness levels of the plurality of first candidate pictures; wherein one of the first candidate pictures comprises N of the second brightness levels of N first image regions, and one of the first image regions corresponds to one of the display regions; the second brightness level of the nth first image region of the screen saver picture is inversely related to the first brightness level.

Optionally, the apparatus further comprises:

a fourth determining module 106, configured to determine a second average accumulated brightness of an nth first image region of the first candidate picture according to a second accumulated brightness of pixels in the nth first image region; determining the second brightness level of the nth first image region according to the nth second average accumulated brightness.

Optionally, the apparatus further comprises:

a second dividing module 107 configured to divide M second luminance sections according to the second average cumulative luminance of each of the first image areas, where M is a positive integer greater than 1;

the second determining module 102 is specifically configured to compare the nth second average accumulated luminance with luminances in M second luminance intervals, and determine a second luminance interval in which the nth second average accumulated luminance is located; and determining the second brightness level of the nth first image area according to the second brightness interval in which the nth second average accumulated brightness is positioned.

Optionally, the selecting module 103 is specifically configured to obtain a first level difference between a second brightness level of an nth first image region of the first candidate picture and a first brightness level of an nth display region; calculating the sum of N first level differences; and selecting the first candidate picture with the largest sum of the first grade differences from the plurality of first candidate pictures as the screen saver picture.

Optionally, the apparatus further comprises:

a fifth determining module 108, configured to determine a third average accumulated luminance of the sub-pixels belonging to the same color component in the nth display region according to a third accumulated luminance of the sub-pixels of different colors of a single pixel in the nth display region within the preset time period; determining the color component with the maximum third average accumulated brightness as the biased color of the nth display area;

the selection module 103 is specifically configured to select a corresponding screen saver picture for the screen saver of the display module according to the N biased colors and the N first brightness levels; wherein a display color of the screen saver picture in the nth display area is different from the biased color of the nth display area.

Optionally, the selecting module 103 is specifically configured to select a corresponding screen saver picture for screen saving of the display module according to the N first brightness levels and the biased color of the nth display region if the biased color of the nth display region is blue; wherein the display color of the screen saver picture in the nth display area is different from the blue color.

Optionally, the selecting module includes:

a first sending module 109 configured to send the N first brightness levels to a server;

a first receiving module 110, configured to receive the screen saver pictures fed back by the server according to the N first brightness levels; and carrying out the screen saver of the display module by utilizing the screen saver picture.

Optionally, the first sending module 109 is specifically configured to send the N first brightness levels and the N biased colors to a server;

the first receiving module 110 is specifically configured to receive the screen saver pictures fed back by the server according to the N first brightness levels and the N biased colors; and carrying out the screen saver of the display module by utilizing the screen saver picture.

Fig. 10 is a diagram illustrating a screen saver picture selecting apparatus according to an exemplary embodiment. Referring to fig. 10, the screen saver picture selecting apparatus is applied to a server including a plurality of second candidate pictures, and the apparatus includes:

a second receiving module 201 configured to receive the N first brightness levels sent by the electronic device; wherein one of the first brightness levels corresponds to a display area of a display module of the electronic device, and N is greater than 1;

a sixth determining module 202, configured to determine a screen saver picture from the plurality of second candidate pictures according to the N first brightness levels;

a second sending module 203, configured to send the screen saver picture to the electronic device; the area brightness of the screen saver picture displayed in the nth display area of the electronic equipment is negatively related to the first brightness level, and N is a positive integer less than or equal to N.

Optionally, the sixth determining module 202 is specifically configured to determine the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the third brightness levels of the plurality of second candidate pictures; wherein one of the second candidate pictures includes N of the third brightness levels of N second image regions, and one of the second image regions corresponds to one of the display regions; the third brightness level of the nth of the second image regions of the screen saver picture is inversely related to the first brightness level.

Optionally, the apparatus further comprises:

a seventh determining module 204, configured to determine a fourth average accumulated brightness of an nth one of the second image regions according to a fourth accumulated brightness of pixels in the nth one of the second image regions of the second candidate picture; determining the third brightness level of the nth second image region according to the nth fourth average cumulative brightness.

Optionally, the apparatus further comprises:

a third dividing module 205 configured to divide M third luminance sections according to the fourth average cumulative luminance of the second image region, where M is a positive integer greater than 1;

the seventh determining module 206 is specifically configured to compare the nth fourth average accumulated luminance with luminances in M third luminance intervals, and determine a third luminance interval in which the nth fourth average accumulated luminance is located; and determining the third brightness level of the nth second image area according to a third brightness interval in which the nth fourth average accumulated brightness is positioned.

Optionally, the sixth determining module 202 is specifically configured to obtain a second level difference between a third brightness level of an nth second image region of the second candidate picture and a first brightness level of an nth display region; calculating the sum of N second level differences; and determining the second candidate picture with the largest sum of the second level differences as the screensaver picture from the second candidate pictures.

Optionally, the apparatus further comprises:

a third receiving module 207 configured to receive N biased colors of the N display areas sent by the electronic device;

the sixth determining module 202 is specifically configured to determine the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the N biased colors; wherein a display color of the screen saver picture in the nth display area is different from the biased color of the nth display area.

Optionally, the sixth determining module 202 is specifically configured to determine, if the biased color of the nth display region is blue, the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the biased color of the nth display region; wherein the display color of the screen saver picture in the nth display area is different from the blue color.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

FIG. 11 is a block diagram illustrating an electronic device apparatus in accordance with an example embodiment. For example, the device 800 may be a cell phone, television, or the like.

Referring to fig. 11, the apparatus 800 may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and communication component 816.

The processing component 802 generally controls overall operation of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices 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 disks.

Power components 806 provide power to the various components of device 800. The power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 800.

The multimedia component 808 includes a screen that provides an output interface between the device 800 and a 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 an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for the device 800. For example, the sensor assembly 814 may detect the open/closed status of the device 800, the relative positioning of components, such as a display and keypad of the device 800, the sensor assembly 814 may also detect a change in the position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration/deceleration of the device 800, and a change in the temperature of the device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 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 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communications between the apparatus 800 and other devices in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as Wi-Fi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. 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, the apparatus 800 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 Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the device 800 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

A non-transitory computer readable storage medium having instructions stored thereon that, when executed by a processor of an electronic device, enable the electronic device including a display module to perform a method of selecting a screen saver picture, the method comprising:

Fig. 12 is a block diagram illustrating a server apparatus according to an example embodiment. Referring to fig. 12, the apparatus 900 includes a processing component 922, which further includes one or more processors, and memory resources, represented by memory 932, for storing instructions, such as applications, that are executable by the processing component 922. The application programs stored in memory 932 may include one or more modules that each correspond to a set of instructions. Further, the processing component 922 is configured to execute instructions to perform the information processing method described above.

The device 900 may also include a power component 926 configured to perform power management of the device 900, a wired or wireless network interface 950 configured to connect the device 900 to a network, and an input output (I/O) interface 958. The apparatus 900 may operate based on an operating system stored in the memory 932, such as Windows Server, Mac OSXTM, UnixTM, LinuxTM, FreeBSDTM, or the like.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided that includes instructions, such as the memory 932 that includes instructions, that are executable by the processing component 922 of the apparatus 900 to perform the above-described method. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

A non-transitory computer readable storage medium in which instructions, when executed by a processing component of a server, enable the server to perform an information processing method, the method comprising:

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the 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

1. A method for selecting a screen saver picture is applied to electronic equipment comprising a display module, and the method comprises the following steps:

2. The method of claim 1, further comprising:

3. The method of claim 1, further comprising:

4. The method according to claim 3, wherein selecting the corresponding screen saver picture for the screen saver of the display module according to the N first brightness levels comprises:

5. The method of claim 4, further comprising:

6. The method of claim 5, further comprising:

dividing M second brightness intervals according to the second average accumulated brightness of each first image area;

7. The method of claim 4, wherein selecting the screen saver picture from the first plurality of candidate pictures according to the N first brightness levels and the second brightness levels of the first plurality of candidate pictures comprises:

calculating the sum of N first level differences;

8. The method according to any one of claims 1 to 7, further comprising:

9. The method as claimed in claim 8, wherein selecting the corresponding screen saver picture for the screen saver of the display module according to the N biased colors and the N first brightness levels comprises:

10. The method according to claim 1, wherein selecting the corresponding screen saver picture for the screen saver of the display module according to the N first brightness levels comprises:

sending the N first brightness levels to a server;

11. The method according to claim 8, wherein selecting the corresponding screen saver picture for the screen saver of the display module according to the N first brightness levels comprises:

sending the N first brightness levels and the N biased colors to a server;

receiving N first brightness levels sent by the service receiving electronic equipment; wherein one of the first brightness levels corresponds to a display area of a display module of the electronic device, and N is greater than 1;

The device feeds back the screen saver pictures according to the N first brightness levels and the N biased colors;

12. A method for selecting a screen saver picture is applied to a server comprising a plurality of second alternative pictures, and comprises the following steps:

13. The method according to claim 12, wherein the determining a screen saver picture from the second plurality of candidate pictures according to the N first brightness levels comprises:

14. The method of claim 13, further comprising:

15. The method of claim 14, further comprising:

16. The method of claim 13, wherein determining the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the third brightness levels of the plurality of second candidate pictures comprises:

calculating the sum of N second level differences;

17. The method according to any one of claims 12 to 16, further comprising:

receiving N biased colors of N display areas sent by the electronic equipment;

18. The method according to claim 17, wherein the determining the screen saver picture from the second candidate pictures according to the N first brightness levels and the N biased colors comprises:

19. The utility model provides a selection device of screen saver picture which characterized in that, is applied to the electronic equipment who contains the display module assembly, the device includes:

20. The apparatus of claim 19, further comprising:

21. The apparatus of claim 19, further comprising:

22. The apparatus of claim 21,

23. The apparatus of claim 22, further comprising:

24. The apparatus of claim 23, further comprising:

25. The apparatus of claim 22,

the selection module is specifically configured to acquire a first level difference between a second brightness level of an nth first image region of the first candidate picture and a first brightness level of an nth display region; calculating the sum of N first level differences; and selecting the first candidate picture with the largest sum of the first grade differences from the plurality of first candidate pictures as the screen saver picture.

26. The apparatus of any one of claims 19 to 25, further comprising:

the selection module is specifically configured to select a corresponding screen saver picture for screen saving of the display module according to the N biased colors and the N first brightness levels; wherein a display color of the screen saver picture in the nth display area is different from the biased color of the nth display area.

27. The apparatus of claim 26,

the selection module is specifically configured to select a corresponding screen saver picture for screen saving of the display module according to the N first brightness levels and the biased color of the nth display area if the biased color of the nth display area is blue; wherein the display color of the screen saver picture in the nth display area is different from the blue color.

28. The apparatus of claim 19, wherein the selection module comprises:

29. The apparatus of claim 28,

the first sending module is specifically configured to send the N first brightness levels and the N biased colors to a server;

30. A device for selecting screen saver pictures is applied to a server comprising a plurality of second alternative pictures, and comprises:

31. The apparatus of claim 30,

the sixth determining module is specifically configured to determine the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the third brightness levels of the plurality of second candidate pictures; wherein one of the second candidate pictures includes N of the third brightness levels of N second image regions, and one of the second image regions corresponds to one of the display regions; the third brightness level of the nth of the second image regions of the screen saver picture is inversely related to the first brightness level.

32. The apparatus of claim 31, further comprising:

33. The apparatus of claim 30, further comprising:

34. The apparatus of claim 31,

the sixth determining module is specifically configured to obtain a second level difference between a third brightness level of an nth second image region of the second candidate picture and a first brightness level of an nth display region; calculating the sum of N second level differences; and determining the second candidate picture with the largest sum of the second level differences as the screensaver picture from the second candidate pictures.

35. The apparatus of any one of claims 30 to 34, further comprising:

36. The apparatus of claim 35,

the sixth determining module is specifically configured to determine the screen saver picture from the plurality of second candidate pictures according to the N first brightness levels and the biased color of the nth display region if the biased color of the nth display region is blue; wherein the display color of the screen saver picture in the nth display area is different from the blue color.

37. A device for selecting a screen saver picture is characterized by comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to execute a method of selecting a screen saver picture according to any of claims 1 to 11; or configured to perform a method of selecting a screen saver picture according to any of claims 12 to 18.

38. A non-transitory computer readable storage medium having instructions which, when executed by a processor of a screen saver picture selection device, enable the screen saver picture selection device to perform a screen saver picture selection method according to any one of claims 1 to 11; or configured to perform a method of selecting a screen saver picture according to any of claims 12 to 18.