CN118072668A - Pixel compensation method, device and storage medium - Google Patents

Pixel compensation method, device and storage medium Download PDF

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CN118072668A
CN118072668A CN202211484223.0A CN202211484223A CN118072668A CN 118072668 A CN118072668 A CN 118072668A CN 202211484223 A CN202211484223 A CN 202211484223A CN 118072668 A CN118072668 A CN 118072668A
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pixel
value
gray
determining
time
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刘唱
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Abstract

The disclosure relates to a pixel compensation method, a device and a storage medium, which relate to the technical field of display and are used for prolonging the service time of a screen. The method comprises the following steps: determining an actual gray scale value of a pixel in a display screen; determining a remaining use time of the pixel based on the actual gray scale value and an initial use state of the pixel; determining a gray-scale compensation value of the pixel based on the remaining use time of the pixel; and compensating the pixel based on the gray-scale compensation value.

Description

Pixel compensation method, device and storage medium
Technical Field
The disclosure relates to the field of display technologies, and in particular, to a pixel compensation method, a device and a storage medium.
Background
With the development of display technologies, the types of display screens are increasing, and Organic Light-Emitting Diode (OLED) screens are used as active Light-Emitting display products, and have the advantages of high screen color gamut, good contrast, excellent display effect, and the like, and are widely used in various terminals.
Because the working time and the display brightness of each pixel in the OLED screen are different, the ageing degree of each pixel in the screen is easy to be uneven, and when the screen is driven to lighten a certain fixed picture or a certain fixed area for a long time, the problems of screen burning and the like easily occur, so that the use experience of a user is influenced.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a pixel compensation method, apparatus, and storage medium.
According to a first aspect of embodiments of the present disclosure, there is provided a pixel compensation method, the method comprising: determining an actual gray scale value of a pixel in a display screen; determining a remaining use time of the pixel based on the actual gray scale value and an initial use state of the pixel; determining a gray-scale compensation value of the pixel based on the remaining use time of the pixel; and compensating the pixel based on the gray-scale compensation value.
In one embodiment, the determining the actual gray-scale value of the pixel in the display screen includes: and determining the actual gray scale value of the pixel based on the first corresponding relation between the screen brightness of the display screen and the time and the second corresponding relation between the pixel gray scale value and the time.
In one embodiment, the determining the actual gray-scale value of the pixel based on the first correspondence between the screen brightness of the display screen and the time and the second correspondence between the pixel gray-scale value and the time includes: determining the screen brightness of the display screen corresponding to the current moment based on the first corresponding relation; determining a pixel gray-scale value corresponding to the current moment based on the second corresponding relation; and determining the actual gray-scale value of the pixel at the current moment based on the product of the screen brightness of the display screen corresponding to the current moment and the gray-scale value of the pixel corresponding to the current moment.
In one embodiment, the determining the remaining usage time of the pixel based on the actual gray-scale value of the pixel in the display screen and the initial usage state of the pixel includes: determining a use time damage value of the pixel in preset time based on the actual gray scale value of the pixel; and determining the residual using time of the pixel based on the initial using state of the pixel and the using time damage value of the pixel in the preset time.
In one embodiment, the determining the usage time degradation value of the pixel in the preset time based on the actual gray scale value of the pixel includes: determining the screen use time of the display screen; and determining a use time damage value of the pixel in preset time according to the corresponding relation between the screen use time of the display screen and the initial use state of the pixel and the actual gray scale value based on the actual gray scale value.
In one embodiment, the corresponding relationship between the screen usage time of the display screen and the initial usage state of the pixels and the actual gray scale value is: Wherein B represents the initial use state of the pixel, LT represents the screen use time of the display screen, G represents the actual gray scale value, lambda represents the use time factor, and t represents the preset time.
In one embodiment, the method further comprises: periodically acquiring the use state of the pixel; a reference pixel is determined based on the state of use of the pixel.
In one embodiment, the determining the gray-scale compensation value of the pixel based on the remaining usage time of the pixel includes: determining a remaining usage time of the reference pixel; and determining a gray level compensation value of the pixel based on a gray level difference value between the actual gray level value of the pixel and the actual gray level value of the reference pixel in a preset period.
In one embodiment, the reference pixel is a pixel with the largest remaining usage time, and the determining the gray-scale compensation value of the pixel based on the gray-scale difference value between the gray-scale value of the pixel and the actual gray-scale value of the reference pixel in the preset period includes: if the gray level difference value between the gray level value of the first pixel and the actual gray level value of the pixel with the maximum remaining use time in the preset period is smaller than or equal to a gray level threshold value, determining the gray level difference value as a gray level compensation value of the first pixel; and if the gray level difference value between the gray level value of the second pixel and the actual gray level value of the pixel with the maximum residual use time in the preset period is larger than a gray level threshold value, determining the gray level threshold value as a gray level compensation value of the pixel.
According to a second aspect of embodiments of the present disclosure, there is provided a pixel compensation apparatus, the apparatus comprising:
The determining module is used for determining the actual gray scale value of the pixel in the display screen; determining a remaining use time of the pixel based on the actual gray scale value and an initial use state of the pixel; determining a gray-scale compensation value of the pixel based on the remaining use time of the pixel; and the processing module is used for compensating the pixel based on the gray-scale compensation value.
In one embodiment, the determining module is configured to determine the actual gray-scale value of the pixel based on a first correspondence between the screen brightness of the display screen and time, and a second correspondence between the pixel gray-scale value and time.
In one embodiment, the determining module is configured to determine, based on the first correspondence, a screen brightness of a display screen corresponding to a current moment; determining a pixel gray-scale value corresponding to the current moment based on the second corresponding relation; and determining the actual gray-scale value of the pixel at the current moment based on the product of the screen brightness of the display screen corresponding to the current moment and the gray-scale value of the pixel corresponding to the current moment.
In one embodiment, the determining module is configured to determine a usage time degradation value of the pixel within a preset time based on an actual gray-scale value of the pixel; and determining the residual using time of the pixel based on the initial using state of the pixel and the using time damage value of the pixel in the preset time.
In one embodiment, the determining module is configured to determine a screen usage time of the display screen; and determining a use time damage value of the pixel in preset time according to the corresponding relation between the screen use time of the display screen and the initial use state of the pixel and the actual gray scale value based on the actual gray scale value.
In one embodiment, the corresponding relationship between the screen usage time of the display screen and the initial usage state of the pixels and the actual gray scale value is: Wherein B represents the initial use state of the pixel, LT represents the screen use time of the display screen, G represents the actual gray scale value, lambda represents the use time factor, and t represents the preset time.
In one embodiment, the determining module is configured to periodically obtain a usage state of the pixel; a reference pixel is determined based on the state of use of the pixel.
In one embodiment, the determining module is configured to determine a remaining usage time of the reference pixel; and determining a gray level compensation value of the pixel based on a gray level difference value between the actual gray level value of the pixel and the actual gray level value of the reference pixel in a preset period.
In one embodiment, the reference pixel is a pixel with the largest remaining usage time, and the determining module is configured to determine the gray-scale difference value as the gray-scale compensation value of the first pixel if the gray-scale difference value between the gray-scale value of the first pixel and the actual gray-scale value of the pixel with the largest remaining usage time is less than or equal to a gray-scale threshold value in a preset period; and if the gray level difference value between the gray level value of the second pixel and the actual gray level value of the pixel with the maximum residual use time in the preset period is larger than a gray level threshold value, determining the gray level threshold value as a gray level compensation value of the pixel.
According to a third aspect of embodiments of the present disclosure, there is provided a pixel compensation apparatus, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: the pixel compensation method as described in the first aspect and embodiments thereof described above is performed.
According to a fourth aspect of embodiments of the present disclosure, a screen module is provided for performing the pixel compensation method as described in the first aspect and embodiments thereof.
According to a fifth aspect of embodiments of the present disclosure, a wearable device is provided for performing the pixel compensation method as described in the first aspect and embodiments thereof above.
According to a sixth aspect of embodiments of the present disclosure, there is provided a non-transitory computer readable storage medium, which when executed by a processor of a terminal, enables the terminal to perform the pixel compensation method as described in the first aspect and embodiments thereof.
The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects: determining an actual gray scale value of a pixel in a display screen, and determining the residual use time of the pixel based on the actual gray scale value and the initial use state of the pixel; a gray-scale compensation value of the pixel is determined based on the remaining usage time of the pixel, and the pixel is compensated based on the gray-scale compensation value. Therefore, the gray scale of each pixel is accurately compensated by calculating the residual use time of each pixel and the corresponding gray scale compensation value, and the use time of each pixel is ensured to be as consistent as possible, so that the screen burning phenomenon is avoided, and the whole use time of the screen is prolonged.
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 disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a flowchart illustrating a pixel compensation method according to an exemplary embodiment.
Fig. 2 is a flow chart illustrating a pixel compensation method according to an exemplary embodiment.
Fig. 3 is a flow chart illustrating a pixel compensation method according to an exemplary embodiment.
Fig. 4 is a flow chart illustrating a pixel compensation method according to an exemplary embodiment.
Fig. 5 is a flowchart illustrating a pixel compensation method according to an exemplary embodiment.
Fig. 6 is a flowchart illustrating a pixel compensation method according to an exemplary embodiment.
Fig. 7 is a flowchart illustrating a pixel compensation method according to an exemplary embodiment.
Fig. 8 is a flowchart illustrating a pixel compensation method according to an exemplary embodiment.
Fig. 9 is a block diagram illustrating a pixel compensation apparatus according to an exemplary embodiment.
Fig. 10 is a block diagram illustrating a device for pixel compensation according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure.
In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the present disclosure. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure. Embodiments of the present disclosure are described in detail below with reference to the attached drawings.
As described in the background art, the working time and the display brightness of each pixel in the OLED screen are different, so that the aging degree of each pixel in the screen is easily uneven, and when the screen is driven to lighten a certain fixed picture or a certain fixed area for a long time, the problems of screen burning and the like easily occur, and the use experience of a user is influenced.
In the related art, the screen burning problem is avoided by moving the pixels in the fixed picture and reducing the normally-bright pressure of the fixed pixels, but the excessive displacement of the moving pixels can influence the user experience, and the screen burning phenomenon of the area can only be slowed down, so that the screen burning problem cannot be fundamentally solved.
Based on the above, the embodiment of the disclosure provides a pixel compensation method, which determines the residual use time of a pixel based on the actual gray scale value and the initial use state of the pixel by determining the actual gray scale value of the pixel in a display screen; a gray-scale compensation value of the pixel is determined based on the remaining usage time of the pixel, and the pixel is compensated based on the gray-scale compensation value. Therefore, the gray scale of each pixel is accurately compensated by calculating the residual use time of each pixel and the corresponding gray scale compensation value, and the use time of each pixel is ensured to be as consistent as possible, so that the screen burning phenomenon is avoided, and the whole use time of the screen is prolonged.
Fig. 1 is a flowchart illustrating a pixel compensation method according to an exemplary embodiment, including the following steps, as shown in fig. 1.
In step S11, the actual gray scale value of the pixel in the display screen is determined.
In step S12, the remaining use time of the pixel is determined based on the actual gray-scale value and the initial use state of the pixel.
In step S13, a gray-scale compensation value of the pixel is determined based on the remaining use time of the pixel.
In step S14, the pixel is compensated based on the gray-scale compensation value.
In the embodiment of the disclosure, determining an actual gray scale value of a pixel in a display screen, and determining the residual use time of the pixel based on the actual gray scale value and the initial use state of the pixel; a gray-scale compensation value of the pixel is determined based on the remaining usage time of the pixel, and the pixel is compensated based on the gray-scale compensation value. Therefore, the gray scale of each pixel is accurately compensated by calculating the residual use time of each pixel and the corresponding gray scale compensation value, and the use time of each pixel is ensured to be as consistent as possible, so that the screen burning phenomenon is avoided, and the whole use time of the screen is prolonged.
The gray scale value of the pixel is used for representing the brightness of the pixel, and the larger the gray scale value of the pixel is, the higher the corresponding brightness is.
In one embodiment, the initial usage state of the pixel may include an initial usage time of the pixel, an initial usage luminance of the pixel, or the like.
It should be appreciated that in step S14, the compensation of the pixels based on the gray-scale compensation values is performed in real time, for example, once per second, to accurately compensate the pixels, reducing the loss to the pixels having a short use time.
In some embodiments, determining the actual gray-scale value of a pixel in the display screen in step S11 may be implemented as: and determining the actual gray-scale value of the pixel based on the first corresponding relation between the screen brightness of the display screen and the time and the second corresponding relation between the gray-scale value of the pixel and the time.
In one embodiment, the first correspondence between the screen brightness of the display screen and time may be represented as a t =f (t), where a represents the screen brightness of the display screen and t represents time.
As a possible implementation, the first correspondence is obtained by adding 51 registers on the display driver chip (DISPLAY DRIVER IC, DDIC) side.
In one embodiment, the second correspondence between the pixel gray level value and time may be represented as G t =g (t), where G represents the pixel gray level value and t represents time.
As a possible implementation manner, the relation of lighting each gray level of each pixel is counted by an application processor (Application Processor, AP), and a second corresponding relation is obtained based on log output.
In the embodiment of the disclosure, the actual gray-scale value of the pixel can be determined by only adding the output of the register to the original DDIC and adding the output of the log to the AP section, and no additional hardware cost is required to be added.
In some embodiments, determining the actual gray-scale value of the pixel based on the first correspondence between the screen brightness of the display screen and the time and the second correspondence between the pixel gray-scale value and the time may be implemented as the following steps, as shown in fig. 2:
in step S21, based on the first correspondence, the display screen brightness corresponding to the current time is determined.
In step S22, a pixel gray-scale value corresponding to the current time is determined based on the second correspondence relationship.
In step S23, the actual gray-scale value of the pixel at the current time is determined based on the product of the brightness of the display screen corresponding to the current time and the gray-scale value of the pixel corresponding to the current time.
In one embodiment, the formula is based onAn actual gray scale value of the pixel is determined, wherein G represents the actual gray scale value of the pixel, a t represents the first correspondence, and G t represents the second correspondence.
For example, the screen brightness of the display screen corresponding to the current time is determined to be a based on the first corresponding relation, the actual gray-scale value of the first pixel corresponding to the current time is determined to be G' based on the second corresponding relation, and then the actual gray-scale value of the first pixel
In the embodiment of the disclosure, the screen brightness and the pixel gray level value of the display screen at the current moment are respectively determined through the first corresponding relation and the second corresponding relation, and the actual gray level value of the pixel at the current moment is determined based on the screen brightness and the pixel gray level value at the current moment, so that the actual residual use time of the pixel is determined based on the actual gray level value of the pixel at the current moment, the gray level of the pixel is further accurately compensated, the use time of each pixel is ensured to be as consistent as possible, the screen burning phenomenon is avoided, and the use time of the whole screen is improved.
In some embodiments, determining the remaining usage time of the pixel in step S12 based on the actual gray scale value and the initial usage state of the pixel may be implemented as steps S31-32, as shown in fig. 3:
in step S31, a usage time degradation value of the pixel within a preset time is determined based on the actual gray scale value of the pixel.
In step S32, the remaining usage time of the pixel is determined based on the initial usage state of the pixel and the usage time break value of the pixel within the preset time.
In one embodiment, the remaining usage time of the pixel is determined based on the formula LT rest = B-B ', where LT rest represents the remaining usage time of the pixel, B represents the initial usage state of the pixel, and B' represents the usage time conversion value of the pixel within a preset time.
For example, the preset time may be 24 hours, and the remaining usage time of the pixel is calculated every 24 hours, in order to avoid that the remaining usage time of the pixel is not changed for a short time, resulting in a computational effort consumption.
In the embodiment of the disclosure, the use time damage value of the pixel in the preset time is calculated based on the actual gray scale value of the pixel, so that the accuracy of the residual use time of the pixel is improved, and the compensation is more accurate.
In some embodiments, determining the usage time degradation value of the pixel in the preset time in step S31 based on the actual gray-scale value of the pixel may be implemented as steps S41 to S42, as shown in fig. 4:
in step S41, a screen use time of the display screen is determined.
In step S42, based on the actual gray-scale value, the usage time degradation value of the pixel in the preset time is determined according to the corresponding relationship between the screen usage time of the display screen and the initial usage state of the pixel and the actual gray-scale value.
In some embodiments, the correspondence between the screen usage time of the display screen and the initial usage state of the pixels and the actual gray scale value is: wherein B represents the initial use state of the pixel, LT represents the screen use time of the display screen, G represents the actual gray scale value, lambda represents the use time factor, and t represents the preset time.
Wherein, based on the pre-established correspondence: And determining the corresponding relation between the screen use time of the display screen and the initial use state of the pixels and the actual gray scale values, wherein LT represents the screen use time of the display screen, B represents the initial use state of the pixels, A represents the display brightness of the screen, lv represents the display brightness of the pixels, G represents the actual gray scale values of the pixels, and lambda represents the use time factors (the use time factors of different manufacturers are different).
In one embodiment, the formula is based onAnd determining a use time damage value of the pixel in a preset time. Wherein LT rest represents the remaining usage time of the pixel, B represents the initial usage state of the pixel, B' represents the usage time conversion value of the pixel within the preset time, LT represents the screen usage time of the display screen, and G represents the actual gray scale value.
In the embodiment of the disclosure, by establishing a calculation formula of the residual use time of the pixel, the residual use time of the pixel can be more accurately determined based on the actual gray scale value and the initial use state of the pixel.
In some embodiments, the pixel compensation method provided in the embodiments of the present disclosure further includes the following steps, as shown in fig. 5:
in step S51, the use state of the pixel is periodically acquired.
In step S52, a reference pixel is determined based on the use state of the pixel.
The reference pixel may be a pixel having the largest remaining use time; perhaps, the reference pixel may be a pixel whose remaining usage time is the average; or the reference pixel may be a pixel located in a certain time interval during the remaining use time set in advance. The screen may be divided into a plurality of areas, and the gray scale of the corresponding area may be adjusted according to the average remaining service life of each area, which is not limited again in the embodiments of the present disclosure.
In some embodiments, determining the gray-scale compensation value for a pixel based on the remaining usage time of the pixel includes the steps of, as shown in fig. 6:
In step S61, the remaining usage time of the reference pixel is determined.
In step S62, a gray-scale compensation value of the pixel is determined based on the gray-scale difference between the actual gray-scale value of the pixel and the actual gray-scale value of the reference pixel within the preset period.
In one embodiment, the formula is based onA gray scale compensation value for the pixel is determined. Wherein G comp represents a gray-scale compensation value of a pixel, G represents a gray-scale value of a certain pixel, ga represents an actual gray-scale value of a reference pixel, and t represents a preset period.
Wherein 0.ltoreq.G comp≤Gmax-Gmin,Gmax denotes an actual gray-scale value of a pixel whose remaining use time is minimum, and G min denotes an actual gray-scale value of a pixel whose remaining use time is maximum.
In an exemplary embodiment, the formula is based onA gray scale compensation value for the pixel is determined. Wherein G comp represents the gray-scale compensation value of a pixel, G represents the gray-scale value of a certain pixel,/>The actual gray scale value of the pixel with the average residual using time is represented, and t represents a preset period.
In another exemplary embodiment, the formula is basedA gray scale compensation value for the pixel is determined. Wherein G comp represents a gray-scale compensation value of a pixel, G represents a gray-scale value of a certain pixel, G min represents an actual gray-scale value of a pixel with the largest remaining use time, and t represents a preset period.
In the embodiment of the disclosure, the actual gray scale value of the reference pixel is determined, and the gray scale compensation value of the pixel is determined based on the gray scale difference value between the actual gray scale value of the pixel and the actual gray scale value of the reference pixel in a preset period, so that the actual gray scale value of each pixel is the same as the actual gray scale value of the reference pixel as much as possible, the loss of the pixel with short residual use time is reduced, and the whole use time of the screen is prolonged.
In one embodiment, if the reference pixel is the pixel with the maximum remaining usage time, the gray-scale compensation value of the pixel is determined based on the gray-scale difference value between the gray-scale value of the pixel and the actual gray-scale value of the pixel with the maximum remaining usage time in the preset period, as shown in fig. 7, which includes the following steps:
in step S71, if the gray-scale difference between the gray-scale value of the first pixel and the actual gray-scale value of the pixel with the maximum remaining usage time is less than or equal to the gray-scale threshold value in the preset period, the gray-scale difference value is determined as the gray-scale compensation value of the first pixel.
In step S72, if the gray-scale difference between the gray-scale value of the second pixel and the actual gray-scale value of the pixel with the maximum remaining usage time is greater than the gray-scale threshold value in the preset period, the gray-scale threshold value is determined as the gray-scale compensation value of the pixel.
In one embodiment, the gray level threshold is set to a maximum value of human eye perceived color difference. If the gray level difference value between the gray level value of the second pixel and the actual gray level value of the pixel with the largest remaining service time in the preset period is larger than the gray level threshold value, at this time, if the gray level difference value is still set as the gray level compensation value of the second pixel, the human eye can perceive the chromatic aberration generated by the compensation, and bad experience is brought to the user.
Illustratively, the gray level threshold is set to 10. If the gray level difference between the gray level of the first pixel and the actual gray level of the pixel with the maximum remaining use time is 6 in the preset period, which is smaller than or equal to the gray level threshold 10, the gray level compensation value of the first pixel is 6. If the gray level difference between the gray level of the second pixel and the actual gray level of the pixel with the maximum remaining use time is 11, which is greater than the gray level threshold 10, the gray level compensation value of the second pixel is 10.
In another embodiment, if the reference pixel is a pixel with the average remaining usage time, determining the gray level difference value as the gray level compensation value of the first pixel if the gray level difference value of the first pixel and the actual gray level value of the image fog with the average remaining usage time in the preset period is smaller than or equal to the gray level threshold value; if the gray scale difference value of the gray scale value of the second pixel and the actual gray scale value of the image fog with the residual using time being the average value in the preset period is larger than the gray scale threshold value, determining the gray scale threshold value as a gray scale compensation value of the second pixel.
Illustratively, the gray-scale threshold is set to 10 and the actual gray-scale value of the pixel with the remaining usage time as the average is 12. If the gray level difference value of the gray level value of the first pixel and the actual gray level value of the pixel with the average remaining use time in the preset period is 4, which is smaller than or equal to the gray level threshold value 10, the gray level compensation value of the first pixel is 6. If the gray level difference between the gray level of the second pixel and the actual gray level of the pixel with the maximum remaining use time is 11, which is greater than the gray level threshold 10, the gray level compensation value of the second pixel is 10.
In the embodiment of the disclosure, the compensation strategy of different pixels is determined based on the gray level difference value of the actual gray level value of the pixel and the reference pixel in the preset period, and on the basis of improving the residual service time of the pixel, the pixel with the overlarge gray level difference value is prevented from being compensated for overlarge gray level at one time, so that bad experience is brought to a user.
In order to better understand a pixel compensation method provided by an embodiment of the present disclosure, a reference pixel is taken as an example of a pixel with the largest remaining service time based on a flowchart shown in fig. 7, and the pixel compensation method provided by the embodiment of the present disclosure is described as shown in fig. 8: increasing output per second by adding a DDIC register to obtain a first correspondence relationship a t =f (t) between screen brightness and time of the display screen; and counting the condition that each pixel of each frame is lightened by the AP end, and determining a second corresponding relation G t =g (t) between the gray level value of the pixel and time. Determining an actual gray scale value of a pixel based on the first relationship and the second relationshipAnd determining a remaining usage time/>, of the pixel based on the actual gray level value of the pixelCalculating the difference between the actual gray level value of the pixel with the shortest use time and the actual gray level value of the pixel with the greatest use time by taking the pixel with the shortest use time as a reference, and determining the gray level compensation value/>, of each pixelDetermining a gray-scale compensation value for each pixel based on a difference between an actual gray-scale value of the pixel and an actual gray-scale value of the pixel having the largest usage time(10 Is a preset threshold value), specifically: if the gray scale difference value of the gray scale value of the first pixel and the actual gray scale value of the pixel with the maximum remaining use time in the preset period is smaller than or equal to the gray scale threshold value, determining the gray scale difference value as a gray scale compensation value of the first pixel; if the gray scale difference value between the gray scale value of the second pixel and the actual gray scale value of the pixel with the maximum remaining use time in the preset period is larger than the gray scale threshold value, determining the gray scale threshold value as the gray scale compensation value of the pixel. The pixel is compensation-corrected every second based on the gray-scale compensation value of each pixel.
In the embodiment of the disclosure, determining an actual gray scale value of a pixel in a display screen, and determining the residual use time of the pixel based on the actual gray scale value and the initial use state of the pixel; a gray-scale compensation value of the pixel is determined based on the remaining usage time of the pixel, and the pixel is compensated based on the gray-scale compensation value. Therefore, the gray scale of each pixel is accurately compensated by calculating the residual use time of each pixel and the corresponding gray scale compensation value, and the use time of each pixel is ensured to be as consistent as possible, so that the screen burning phenomenon is avoided, and the whole use time of the screen is prolonged.
Based on the same conception, the embodiment of the disclosure also provides a pixel compensation device.
It will be appreciated that, in order to implement the above-described functions, the pixel compensation apparatus provided in the embodiments of the present disclosure includes corresponding hardware structures and/or software modules that perform the respective functions. The disclosed embodiments may be implemented in hardware or a combination of hardware and computer software, in combination with the various example elements and algorithm steps disclosed in the embodiments of the disclosure. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functionality using different approaches for each particular application, but such implementation is not to be considered as beyond the scope of the embodiments of the present disclosure.
Fig. 9 is a block diagram of a pixel compensation apparatus according to an exemplary embodiment. Referring to fig. 9, the apparatus includes a determination module 101 and a processing module 102.
A determining module 101, configured to determine an actual gray-scale value of a pixel in the display screen; determining the residual use time of the pixel based on the actual gray scale value and the initial use state of the pixel; determining a gray-scale compensation value of the pixel based on the remaining use time of the pixel;
the processing module 102 is configured to compensate the pixel based on the gray-scale compensation value.
In one embodiment, the determining module 101 is configured to determine the actual gray-scale value of the pixel based on a first correspondence between the screen brightness of the display screen and time, and a second correspondence between the gray-scale value of the pixel and time.
In one embodiment, the determining module 101 is configured to determine, based on the first correspondence, a screen brightness of the display screen corresponding to the current moment; determining a pixel gray scale value corresponding to the current moment based on the second corresponding relation; and determining the actual gray-scale value of the pixel at the current moment based on the product of the screen brightness of the display screen corresponding to the current moment and the gray-scale value of the pixel corresponding to the current moment.
In one embodiment, the determining module 101 is configured to determine a usage time degradation value of the pixel within a preset time based on an actual gray-scale value of the pixel; and determining the residual service time of the pixel based on the initial service state of the pixel and the service time damage value of the pixel in the preset time.
In one embodiment, the determining module 101 is configured to determine a screen usage time of the display screen; and determining the use time damage value of the pixel in the preset time according to the corresponding relation between the screen use time of the display screen and the initial use state of the pixel and the actual gray scale value based on the actual gray scale value.
In one embodiment, the corresponding relationship between the screen usage time of the display screen and the initial usage state of the pixels and the actual gray scale value is: wherein B represents the initial use state of the pixel, LT represents the screen use time of the display screen, G represents the actual gray scale value, lambda represents the use time factor, and t represents the preset time.
In one embodiment, the determining module 101 is configured to periodically obtain a usage state of a pixel; a reference pixel is determined based on the state of use of the pixel.
In one embodiment, the determining module 101 is configured to determine a remaining usage time of the reference pixel; and determining a gray level compensation value of the pixel based on the gray level difference value of the actual gray level value of the pixel and the actual gray level value of the reference pixel in a preset period.
In one embodiment, if the reference pixel is the pixel with the maximum remaining usage time, the determining module 101 is configured to determine the gray level difference value as the gray level compensation value of the first pixel if the gray level difference value between the gray level value of the first pixel and the actual gray level value of the pixel with the maximum remaining usage time is less than or equal to the gray level threshold value in the preset period; if the gray scale difference value between the gray scale value of the second pixel and the actual gray scale value of the pixel with the maximum remaining use time in the preset period is larger than the gray scale threshold value, determining the gray scale threshold value as the gray scale compensation value of the pixel.
The specific manner in which the various modules perform the operations in the apparatus of the above embodiments have been described in detail in connection with the embodiments of the method, and will not be described in detail herein.
Fig. 10 is a block diagram illustrating an apparatus 200 for pixel compensation according to an exemplary embodiment. For example, apparatus 200 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.
Referring to fig. 10, the apparatus 200 may include one or more of the following components: a processing component 202, a memory 204, a power component 206, a multimedia component 208, an audio component 210, an input/output (I/O) interface 212, a sensor component 214, and a communication component 216.
The processing component 202 generally controls overall operation of the apparatus 200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 202 may include one or more processors 220 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 202 can include one or more modules that facilitate interactions between the processing component 202 and other components. For example, the processing component 202 may include a multimedia module to facilitate interaction between the multimedia component 208 and the processing component 202.
The memory 204 is configured to store various types of data to support operations at the apparatus 200. Examples of such data include instructions for any application or method operating on the device 200, contact data, phonebook data, messages, pictures, videos, and the like. The memory 204 may be implemented by any type or combination of volatile or nonvolatile 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 disk.
The power component 206 provides power to the various components of the device 200. The power components 206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 200.
The multimedia component 208 includes a screen between the device 200 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 208 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 apparatus 200 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.
The audio component 210 is configured to output and/or input audio signals. For example, the audio component 210 includes a Microphone (MIC) configured to receive external audio signals when the device 200 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 204 or transmitted via the communication component 216. In some embodiments, audio component 210 further includes a speaker for outputting audio signals.
The I/O interface 212 provides an interface between the processing assembly 202 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.
The sensor assembly 214 includes one or more sensors for providing status assessment of various aspects of the apparatus 200. For example, the sensor assembly 214 may detect the on/off state of the device 200, the relative positioning of the components, such as the display and keypad of the device 200, the sensor assembly 214 may also detect a change in position of the device 200 or a component of the device 200, the presence or absence of user contact with the device 200, the orientation or acceleration/deceleration of the device 200, and a change in temperature of the device 200. The sensor assembly 214 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 214 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 214 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 216 is configured to facilitate communication between the apparatus 200 and other devices in a wired or wireless manner. The device 200 may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 216 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 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 200 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, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.
In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 204, including instructions executable by processor 220 of apparatus 200 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
It is understood that the term "plurality" in this disclosure means two or more, and other adjectives are similar thereto. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship. The singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It is further understood that the terms "first," "second," and the like are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the expressions "first", "second", etc. may be used entirely interchangeably. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.
It will be further understood that "connected" includes both direct connection where no other member is present and indirect connection where other element is present, unless specifically stated otherwise.
It will be further understood that although operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous.
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 application is intended to cover any adaptations, 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 to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims (14)

1. A method of pixel compensation, the method comprising:
Determining an actual gray scale value of a pixel in a display screen;
determining a remaining use time of the pixel based on the actual gray scale value and an initial use state of the pixel;
Determining a gray-scale compensation value of the pixel based on the remaining use time of the pixel;
And compensating the pixel based on the gray-scale compensation value.
2. The method of claim 1, wherein the determining the actual gray scale value of the pixel in the display screen comprises:
And determining the actual gray scale value of the pixel based on the first corresponding relation between the screen brightness of the display screen and the time and the second corresponding relation between the pixel gray scale value and the time.
3. The method of claim 2, wherein the determining the actual gray-scale value of the pixel based on the first correspondence between the screen brightness of the display screen and time and the second correspondence between the pixel gray-scale value and time comprises:
determining the screen brightness of the display screen corresponding to the current moment based on the first corresponding relation;
determining a pixel gray-scale value corresponding to the current moment based on the second corresponding relation;
And determining the actual gray-scale value of the pixel at the current moment based on the product of the screen brightness of the display screen corresponding to the current moment and the gray-scale value of the pixel corresponding to the current moment.
4. The method of claim 1, wherein the determining the remaining usage time of the pixel based on the actual gray scale value and the initial usage state of the pixel comprises:
Determining a use time damage value of the pixel in preset time based on the actual gray scale value of the pixel;
and determining the residual using time of the pixel based on the initial using state of the pixel and the using time damage value of the pixel in the preset time.
5. The method of claim 4, wherein determining a time-of-use penalty value for the pixel over a preset time based on the actual gray scale value for the pixel comprises:
Determining the screen use time of the display screen;
and determining the use time damage value of the pixel in one day according to the corresponding relation between the screen use time of the display screen and the initial use time of the pixel and the actual gray scale value based on the actual gray scale value.
6. The method of claim 5, wherein the correspondence between the screen usage time of the display screen and the initial usage time of the pixels and the actual gray scale value is: Wherein B represents an initial use time of the pixel, LT represents a screen use time of the display screen, G represents the actual gray scale value, λ represents a time factor, and t represents a time of day.
7. The method according to any one of claims 1 to 6, further comprising:
Periodically acquiring the use state of the pixel;
A reference pixel is determined based on the state of use of the pixel.
8. The method of claim 7, wherein determining the gray-scale compensation value for the pixel based on the remaining usage time of the pixel comprises:
Determining a remaining usage time of the reference pixel;
and determining a gray level compensation value of the pixel based on a gray level difference value between the actual gray level value of the pixel and the actual gray level value of the reference pixel in a preset period.
9. The method of claim 8, wherein the reference pixel is a pixel having a maximum remaining usage time, and wherein the determining the gray-scale compensation value of the pixel based on the gray-scale difference between the actual gray-scale value of the pixel and the actual gray-scale value of the reference pixel within a preset period comprises:
If the gray scale difference value between the actual gray scale value of the first pixel and the actual gray scale value of the pixel with the maximum remaining use time in the preset period is smaller than or equal to a gray scale threshold value, determining the gray scale difference value as a gray scale compensation value of the first pixel;
And if the gray scale difference value between the actual gray scale value of the second pixel and the actual gray scale value of the pixel with the maximum residual use time in the preset period is larger than a gray scale threshold value, determining the gray scale threshold value as a gray scale compensation value of the pixel.
10. A pixel compensation apparatus, the apparatus comprising:
the determining module is used for determining the actual gray scale value of the pixel in the display screen; determining a remaining use time of the pixel based on the actual gray scale value and an initial use state of the pixel; determining a gray-scale compensation value of the pixel based on the remaining use time of the pixel;
and the processing module is used for compensating the pixel based on the gray-scale compensation value.
11. A pixel compensation apparatus, comprising:
A processor;
A memory for storing processor-executable instructions;
Wherein the processor is configured to: a pixel compensation method according to any one of claims 1-9.
12. A screen module for performing the pixel compensation method of any one of claims 1-9.
13. A wearable device for performing the pixel compensation method of any one of claims 1-9.
14. A non-transitory computer readable storage medium, characterized in that instructions in the storage medium, when executed by a processor of a terminal, enable the terminal to perform the pixel compensation method according to any one of claims 1-9.
CN202211484223.0A 2022-11-24 2022-11-24 Pixel compensation method, device and storage medium Pending CN118072668A (en)

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
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