CN109064971B - Method and device for adjusting backlight of OLED (organic light emitting diode) screen - Google Patents
Method and device for adjusting backlight of OLED (organic light emitting diode) screen Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0613—The adjustment depending on the type of the information to be displayed
- G09G2320/062—Adjustment of illumination source parameters
Abstract
The invention provides a method and a device for adjusting backlight of an OLED screen, which are characterized in that the intelligent and automatic target brightness acquisition is realized by acquiring the current brightness value of the OLED screen and then acquiring the target brightness value according to the ambient light around the OLED screen; the brightness interval is obtained according to the current brightness value and the target brightness value, the gradient value is obtained through the frame rate value equivalent split brightness interval, the gradient value is overlapped to achieve the change of the current brightness value gradient value target brightness value, the brightness of the OLED screen is improved without being perceived by a user under the condition that the user uses the OLED screen to be backlight, and user experience is improved.
Description
Technical Field
The invention relates to the field of OLED screens, in particular to a method and a device for adjusting backlight of an OLED screen.
Background
With the progress of science and technology, the OLED screen gradually replaces the LCD by virtue of the advantages of the OLED screen to become the mainstream; the screen effect is closely related to backlight, but the OLED screen belongs to a self-luminous object and has no special backlight, so the effect is more dependent on backlight, the influence of the linearity of backlight change on the effect is particularly obvious, and the current popular processing method either directly fixes a backlight grade and does not change or directly jumps to a corresponding target brightness grade according to the required brightness; aiming at the two schemes, the two schemes have obvious defects, one backlight grade is fixed, the requirement of a user cannot be met, and the corresponding brightness grade is jumped to, although the requirement of the ambient light change of the user can be met, the jump can drive the instant jump of the screen display effect, so that the user experience is directly influenced.
Disclosure of Invention
The invention aims to improve the automatic brightness level adjustment of an OLED screen and improve user experience in a mode of gradually changing brightness, and provides a method and a device for adjusting the backlight of the OLED screen.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a method for adjusting backlight of an OLED (organic light emitting diode) screen, which comprises the following steps of:
determining a brightness interval L according to an acquired current brightness value LN and a target brightness value LT of the OLED screen, wherein the target brightness value is a brightness value determined according to ambient light around the OLED screen;
determining a gradient value LS for equally distinguishing the brightness interval L according to the obtained frame rate value FPS of the OLED screen;
and gradually superposing the gradient value LS on the current brightness value LN until the brightness of the OLED screen is gradually changed into the target brightness value LT.
Further, the step of determining the brightness interval L according to the obtained current brightness value LN and the target brightness value LT of the OLED screen includes:
identifying the current display brightness of the OLED screen to obtain a current brightness value LN;
acquiring the brightness degree of ambient light around the OLED screen;
determining a target brightness value LT of the OLED screen according to the brightness degree;
and identifying the brightness difference between the current brightness value LN and the target brightness value to obtain a brightness interval L.
Further, the step of gradually superimposing the gradient value LS on the current luminance value LN until the luminance of the OLED screen gradually changes to the target luminance value LT includes:
judging whether the gradient value is a positive value or not;
if the current brightness value LN is a positive value, gradually increasing the gradient value LS to the current brightness value LN to obtain a first target brightness value with brightness larger than the current brightness value LN, otherwise, gradually decreasing the gradient value LS to the current brightness value LN to obtain a second target brightness value with brightness smaller than the current brightness value LN.
Further, the step of gradually superimposing the gradient value LS on the current luminance value LN until the luminance of the OLED screen gradually changes to the target luminance value LT includes:
judging whether the target brightness value LT reaches a preset brightness value or not;
and if the preset brightness value is reached, generating reminding information to remind a user that the OLED screen is easily heated due to overhigh brightness.
Further, after the step of generating a reminding message to remind a user that the OLED screen is easily heated due to the excessively high brightness of the OLED screen, the method includes:
generating a cooling instruction;
and starting cooling equipment arranged in the OLED screen according to the cooling instruction so as to reduce the temperature of the OLED screen.
The invention also provides a device for adjusting the backlight of the OLED screen, which comprises:
the interval unit is used for determining a brightness interval L according to the obtained current brightness value LN and a target brightness value LT of the OLED screen, wherein the target brightness value is a brightness value determined according to ambient light around the OLED screen;
the gradient unit is used for determining a gradient value LS for equally distinguishing the brightness interval L according to the obtained frame rate value FPS of the OLED screen;
and the superposition unit is used for gradually superposing the gradient value LS on the current brightness value LN until the brightness of the OLED screen is gradually changed into the target brightness value LT.
Further, the interval unit includes:
the first identification module is used for identifying the current display brightness of the OLED screen to obtain a current brightness value LN;
the brightness degree module is used for acquiring the brightness degree of the ambient light around the OLED screen;
the measuring module is used for determining a target brightness value LT of the OLED screen according to the brightness degree;
and the second identification module is used for identifying the brightness difference between the current brightness value LN and the target brightness value to obtain a brightness interval L.
Further, the superimposing unit includes:
the gradient value judging module is used for judging whether the gradient value is a positive value or not;
a gradual change module, configured to gradually add the gradient value LS to the current luminance value LN if the current luminance value LN is a positive value, to obtain a first target luminance value with luminance greater than the current luminance value LN, and gradually decrease the gradient value LS to the current luminance value LN if the current luminance value LN is a negative value, to obtain a second target luminance value with luminance less than the current luminance value LN
Further, the device for adjusting the backlight of the OLED screen comprises:
a luminance value judgment unit for judging whether the target luminance value LT reaches a preset luminance value;
and the reminding unit is used for generating reminding information if the preset brightness value is reached so as to remind a user that the OLED screen is easily heated due to overhigh brightness.
Further, the device for adjusting the backlight of the OLED screen comprises:
an instruction unit for generating a cooling instruction;
and the driving unit is used for starting cooling equipment arranged in the OLED screen according to the cooling instruction so as to reduce the temperature of the OLED screen.
The invention provides a method and a device for adjusting backlight of an OLED screen, which have the following beneficial effects:
the current brightness value of the OLED screen is obtained, and then the target brightness value is obtained according to the ambient light around the OLED screen, so that intelligent and automatic target brightness obtaining is realized; the brightness interval is obtained according to the current brightness value and the target brightness value, the gradient value is obtained through the frame rate value equivalent split brightness interval, the gradient value is overlapped to achieve the change of the current brightness value gradient value target brightness value, the brightness of the OLED screen is improved without being perceived by a user under the condition that the user uses the OLED screen to be backlight, and user experience is improved.
Drawings
FIG. 1 is a schematic flow chart of a method for adjusting the backlight of an OLED panel according to the present invention;
FIG. 2 is a block diagram of an embodiment of an apparatus for backlight adjustment of an OLED panel according to the present invention;
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a flow chart of a method for adjusting backlight of an OLED display provided by the present invention includes:
step S1: determining a brightness interval L according to the obtained current brightness value LN and a target brightness value LT of the OLED screen, wherein the target brightness value is a brightness value determined according to ambient light around the OLED screen;
step S2: determining a gradient value LS for equally distinguishing a brightness interval L according to the obtained frame rate value FPS of the OLED screen;
step S3: and gradually superposing the gradient value LS on the current brightness value LN until the brightness of the OLED screen is gradually changed into a target brightness value LT.
Specifically, the current brightness value LN mentioned in the step S1 is the current brightness of the OLED screen, the target brightness value LT is the brightness that is automatically preset by the OLED screen after the OLED screen is affected by the backlight of the ambient light, the brightness interval L is the difference between the current brightness value LN and the target brightness value LT, and the brightness interval L includes a positive brightness interval and a negative brightness interval, where the brightness of the OLED screen is linearly increased by "becoming bright" in the positive brightness interval, and is linearly decreased by "becoming dark" in the negative brightness interval; the gradient value LS mentioned in the step S2 is a value obtained by equally dividing the luminance interval L, and the principle of equally dividing is that each frame in the frame rate value FPS corresponds to an equally divided gradient value LS, and the principle of "the current luminance value LN is gradually overlapped by the gradient values LS to gradually change the luminance of the OLED screen to the target luminance value LT" in the step S3 is that the current luminance value LN is overlapped by a preset number of frames to correspondingly overlap the gradient values LS, and finally the target luminance value LT is obtained by gradually changing the current luminance value LN.
In a specific flow, firstly, obtaining a current brightness value LN of an OLED screen, automatically presetting a target brightness value LT according to environment light received by the OLED screen, and determining a difference value, namely a brightness interval L, according to the current brightness value LN and the target brightness value LT; the brightness interval L is divided into positive and negative, when the brightness interval L is positive, the brightness of the OLED screen is driven to be improved, and when the brightness interval L is negative, the brightness of the OLED screen is driven to be reduced; then, acquiring a frame rate value FPS of a screen, obtaining a gradient value LS according to a luminance interval L which is split by the same amount of the frame rate value, and finally gradually changing a current luminance value LN to a target luminance value LT by the same amount of superposition of the gradient value LS, so that user experience is improved;
in one embodiment, the OLED screen is distributed in various manufacturing industries, including mobile phone screens, computer screens, or television screens, and other electronic devices, and the method for adjusting the backlight of the OLED screen improves both the user experience and the power saving effect of the electronic devices, for example: when a mobile phone screen is subjected to backlight, a preset brightness interval L of the mobile phone is a positive number, the brightness of the mobile phone is automatically driven to be gradually improved, and user experience is improved; in addition, if the preset brightness interval L of the mobile phone is negative, the brightness of the mobile phone is automatically driven to be gradually reduced, so that the effect of gradually reducing the brightness of the mobile phone is achieved, and the mobile phone is applied to a scene, namely, the brightness of the back light of the mobile phone is improved after a user goes out, and the brightness of the mobile phone is not reduced when the user enters the room again, so that the accelerated loss of electric quantity is caused, and the eyes of the user are also injured.
In another embodiment, in order to make the superposition of the gradient values LS "not found" by the user, i.e. perform the brightness gradual change from the current brightness value LN to the target brightness value LT without any sound, it is preferable to set the frame rate value FPS to be between thirty frames per second and fifty frames per second, so as to improve the user experience.
In an embodiment, the step S1 of determining the luminance interval L according to the obtained current luminance value LN and the target luminance value LT of the OLED screen includes:
step S11: identifying the current display brightness of the OLED screen to obtain a current brightness value LN;
step S12: obtaining the brightness degree of ambient light around the OLED screen;
step S13: determining a target brightness value LT of the OLED screen according to the brightness degree;
step S14: and identifying the brightness difference between the current brightness value LN and the target brightness value to obtain a brightness interval L.
Specifically, step S11 is to identify the brightness currently displayed by the OLED, and obtain the current brightness value LN according to the identified brightness, step S12 is to obtain the brightness degree of the ambient light around the OLED screen, where the brightness degree may be a brightness degree higher than the current brightness value LN or a brightness degree lower than the current brightness value LN, step S13 is to obtain the target brightness value of the OLED screen to be increased or decreased according to the brightness degree, and step S14 is to identify the brightness difference between the current brightness value LN and the target brightness value LT, where the brightness difference is the brightness variation difference between the target brightness value LT and the current brightness value LN.
In another embodiment, the step S2 of determining the gradient value LS for equally distinguishing the brightness intervals L according to the obtained frame rate value FPS of the OLED screen includes:
step S21: acquiring a resolution value of the OLED screen;
step S22: acquiring a TIMING parameter value corresponding to the resolution value;
step S23: and acquiring a frame rate value FPS of the OLED screen according to the resolution value and the TIMING parameter value.
Specifically, the resolution value in the step S21 is the resolution of the screen; the TIMING parameter value in the step S22 is the front and rear edge parameters of the OLED screen; the principle of "obtaining the frame rate value FPS of the OLED screen" in step S23 is to obtain the frame rate value FPS by combining the definition degree and the front and rear edge parameters, and the frame rate value FPS is related to a processor of the electronic device, and the frame rate value reduction is affected when the rendering degree of the screen is high (i.e., the definition degree is higher), and the length and width of the screen is large (i.e., the front and rear edge parameters are larger).
In specific implementation, firstly, a resolution range of the OLED screen is obtained, a current resolution value of the OLED screen is determined according to the resolution range, then, a TIMING parameter value is obtained according to the current resolution value, and finally, a frame rate value FPS of the OLED screen is determined according to the definition of the resolution value and the length and width of the OLED screen of the TIMING parameter.
In one embodiment, step S3, according to the step of superimposing the gradient values LS step by step on the current luminance value LN until gradually changing the luminance of the OLED screen to the target luminance value LT, includes:
step S31: judging whether the gradient value LS is a positive value or not;
step S32: if the current brightness value LN is a positive value, gradually increasing the gradient value LS to the current brightness value LN to obtain a first target brightness value with brightness larger than the current brightness value LN, otherwise, gradually decreasing the gradient value LS to the current brightness value LN to obtain a second target brightness value with brightness smaller than the current brightness value LN.
Specifically, step S31 is to determine whether the gradient value LS is a positive value or a negative value, and step S32 is to gradually superimpose the positive gradient value LS on the current luminance value LN when the gradient value LS is determined to be a positive value, to finally obtain a first target luminance value whose luminance is greater than the current luminance value LN, and gradually superimpose the negative gradient value LS on the current luminance value LN when the gradient value LS is determined to be a negative value, to finally obtain a second target luminance value whose luminance is less than the current luminance value LN.
In another embodiment, the step S3 of gradually superimposing the gradient values LS on the current luminance value LN until the step of gradually changing the luminance of the OLED screen to the target luminance value LT includes:
step S33: acquiring a transmission pipeline value;
step S34: obtaining a standard frequency value PH of a screen according to the transmission pipeline value and the frame rate value FPS;
step S35: acquiring the total brightness change duration T according to the standard frequency value PH and the brightness interval L;
step S36: and obtaining the gradient time length TS according to the total brightness change time length T and the frame rate value FPS.
Specifically, the transmission pipeline value mentioned in the step S34 is the number of pipelines for data transmission; the PH (PHYFEQ, standard frequency value) mentioned in the above step S35 is the rate at which the frame rate value FPS refreshes the OLED screen; the total luminance change time period T mentioned in the above step S36 is the total time period required for the current luminance value LN to gradually change to the target luminance value LT; the gradient time period TS mentioned in the above step S37 is a time period required for superimposing each gradient value LS.
In specific implementation, firstly, the number of the pipelines for data transmission of the OLED screen is obtained, so that the refresh speed of the OLED screen is high as the number of the pipelines for data transmission is large, and therefore, the standard frequency value PH is correspondingly obtained according to the number of the pipelines for data transmission (namely, the transmission pipeline value) of the OLED screen, then, the total brightness change duration T is obtained according to the standard frequency value PH and the brightness interval L, and finally, the gradient duration TS is obtained according to the total brightness change duration T and the frame rate value FPS.
In one embodiment, after the step S36 of obtaining the gradient time length TS according to the brightness change total time length T and the frame rate value FPS, the method includes:
step S37: acquiring a brightness gradient value N according to the gradient value LS and the gradient duration TS;
step S38: and superposing the driving brightness gradient value N to finish gradient change of the current brightness value LN to the target brightness value LT.
Specifically, the brightness gradient value N mentioned in step S61 is a set of gradient durations TS required for the superposition of the gradient values LS of the brightness and the superposition of a single gradient value LS; the principle of the above step S62 is a process of gradually adding the luminance gradation value N and the current luminance value LN to finally obtain the target luminance value LT.
In specific implementation, firstly, the brightness gradient value N is obtained according to the gradient value LS and the gradient duration TS, and then the brightness gradient value N is driven to be superimposed, so that the current brightness value LN is finally changed to the target brightness value LT.
In one embodiment, the step of specifically explaining the gradual transition to the target luminance value LT according to the current luminance value LN includes:
calculation of the luminance interval L: l is LT-LN;
calculation of the total time length T of the luminance change: t is L/PH;
calculation of the luminance gradation value N: LS ═ L/FPS, TS ═ T/FPS, N ═ LS × TS, where LS × TS is the OLED panel luminance change performed per frame of the frame rate value FPS;
calculation of a gradual change of the current luminance value LN to the target luminance value LT; LT is LN + Nx, where x is the number of times of superimposing the luminance gradation value N, that is, Nx is the same amount of superimposing the luminance gradation value N.
Specifically, the luminance interval L is calculated as a difference obtained by subtracting the current luminance value LN from the target luminance value LT; calculating the total time length T of the brightness change as a residual value of the brightness interval L except the standard frequency value PH; the brightness gradual change value N is calculated relative to a gradient value LS and a gradient time length TS, the gradient time length TS is calculated in a mode that the total brightness change time length T is removed from the residual value of a frame rate value FPS, the gradient value LS is calculated in a mode that the brightness interval L is removed from the residual value of the frame rate value FPS, and finally the brightness gradual change value N is obtained by combining the gradient time length TS and the gradient value LS, namely the brightness change value N is the brightness change of the OLED screen performed by each frame of a frame rate value FOS; the target luminance value LT is calculated by adding the current luminance value LN and a preset luminance gradation value N by the same amount.
In one embodiment, after step S3 of gradually superimposing the gradient values LS on the current luminance value LN until the luminance of the OLED screen is gradually changed to the target luminance value LT, the method includes:
step S321: judging whether the target brightness value LT reaches a preset brightness value or not;
step S322: and if the preset brightness value is reached, generating reminding information to remind a user that the OLED screen is easily heated due to overhigh brightness.
Specifically, step S321 refers to a preset brightness value preset by the manufacturer, in order to prevent the OLED screen from being heated easily to reduce the service life and reduce the user experience after the ambient light makes the OLED screen raise the brightness, step S322 refers to a reminding message, where the reminding message is to remind the user that the brightness of the target brightness value LT of the OLED screen is too high, it should be understood that the higher the brightness of the OLED screen is, the higher the required power is, and the power is raised to raise the temperature of the OLED screen, and the reminding message reminds the user that the current brightness of the OLED screen can cause the OLED screen to be heated.
In specific implementation, after the OLED receives ambient light and then the current brightness is increased to the target brightness, whether the brightness value of the target brightness reaches a preset brightness value or not is judged, and if the target brightness reaches the preset brightness value, a reminding message is generated and displayed on the OLED screen to remind a user that the OLED screen is possibly heated currently.
In an embodiment, after step S322, generating a reminding message to remind the user that the OLED screen is easily heated due to the excessively high luminance of the OLED screen according to the fact that the preset luminance value is reached, the method includes:
step S323: generating a cooling instruction;
step S324: and starting the cooling equipment arranged in the OLED screen according to the cooling instruction so as to reduce the temperature of the OLED screen.
Specifically, the cooling instruction mentioned in step S323 is generated after the reminder information is displayed on the OLED panel, the cooling instruction is used to reduce the temperature of the OLED panel, and step S324 refers to start the cooling device disposed inside the OLED panel according to the cooling instruction to reduce the temperature of the OLED panel.
Referring to fig. 2, a block diagram of an OLED panel backlight adjusting apparatus is shown, wherein the apparatus includes:
the interval unit is used for determining a brightness interval L according to the obtained current brightness value LN and a target brightness value LT of the OLED screen, wherein the target brightness value is a brightness value determined according to ambient light around the OLED screen;
the gradient unit is used for determining a gradient value LS for equally distinguishing the brightness interval L according to the obtained frame rate value FPS of the OLED screen;
and the superposition unit is used for gradually superposing the gradient value LS on the current brightness value LN until the brightness of the OLED screen is gradually changed into a target brightness value LT.
Specifically, the interval unit acquires a current brightness value LN and a target brightness value LT, and determines a brightness interval L according to the current brightness value LN and the target brightness value LT, where the current brightness value LN is the current brightness of the OLED screen, the target brightness value LT is the brightness automatically preset by the OLED screen after the OLED screen is affected by the backlight of the ambient light, the brightness interval L is a difference between the current brightness value LN and the target brightness value LT, and the brightness interval L includes a positive brightness interval and a negative brightness interval, where the brightness of the OLED screen is linearly increased by "becoming bright" when the brightness is the positive brightness interval, and the brightness of the OLED screen is linearly decreased by "becoming dark" when the brightness is the negative brightness interval; the gradient unit is used for obtaining a gradient value LS, the gradient value LS is a value obtained after the brightness interval L is divided in an equal amount mode, the equal amount division principle is that each frame in the frame rate value FPS corresponds to an equal amount of gradient value LS, the superposition unit is used for gradually superposing the gradient values LS, the current brightness value LN is superposed by a preset number of frames so as to correspondingly superpose the gradient values LS, and finally the effect of the target brightness value LT of the gradient value LN of the current brightness value LN is achieved.
In a specific flow, firstly, acquiring a current brightness value LN of an OLED screen through a pickup unit, automatically presetting a target brightness value LT according to ambient light received by the OLED screen, and determining a difference value according to the current brightness value LN and the target brightness value LT, namely a brightness interval L; the brightness interval L is divided into positive and negative, when the brightness interval L is positive, the brightness of the OLED screen is driven to be improved, and when the brightness interval L is negative, the brightness of the OLED screen is driven to be reduced; subsequently, the gradient value LS is obtained by splitting the brightness interval L through the gradient unit, and finally, the superposition unit gradually changes the current brightness value LN to the target brightness value LT through the equivalent superposition of the gradient value LS, so that the user experience is improved.
In one embodiment, the interval unit includes:
the first identification module is used for identifying the current display brightness of the OLED screen to obtain a current brightness value LN;
the brightness degree module is used for acquiring the brightness degree of ambient light around the OLED screen;
the measuring module is used for determining a target brightness value LT of the OLED screen according to the brightness degree;
and the second identification module is used for identifying the brightness difference between the current brightness value LN and the target brightness value to obtain a brightness interval L.
Specifically, the first identification module identifies the brightness currently displayed by the OLED, obtains a current brightness value LN according to the identified brightness, the brightness degree module obtains the brightness degree of the ambient light around the OLED screen, where the brightness degree may be a brightness degree higher than the current brightness value LN or a brightness degree lower than the current brightness value LN, the measurement module obtains a target brightness value of the OLED screen to be increased or decreased according to the brightness degree, and the second identification module identifies a brightness difference between the current brightness value LN and the target brightness value LT, where the brightness difference is a change difference between the target brightness value LT and the current brightness value LN.
In one embodiment, the gradient unit further comprises:
the resolution module is used for acquiring the resolution value of the OLED screen;
the parameter module is used for acquiring a TIMING parameter value corresponding to the resolution value;
and the frame rate acquisition module is used for acquiring a frame rate value FPS of the OLED screen according to the resolution value and the TIMING parameter value.
Specifically, the resolution module is used for acquiring a resolution value, wherein the resolution value is the definition of a screen; the parameter module is used for acquiring a TIMING parameter value, wherein the TIMING parameter value is a front edge parameter and a rear edge parameter of the OLED screen; the frame rate obtaining module is used for obtaining a frame rate value FPS of the OLED screen according to the resolution value and the TIMING parameter value, and the frame rate value FPS is obtained by combining the resolution value and the front and rear edge parameters according to the principle, is related to a processor of an electronic device, has a high rendering degree (namely, the resolution value is higher), and has a large length and width (namely, the front and rear edge parameters are larger) on a screen, so that the frame rate value is reduced.
During specific implementation, firstly, the resolution range of the OLED screen is obtained through the resolution module, the current resolution value of the OLED screen is determined according to the resolution range, then, the parameter module obtains the TIMING parameter value through the current resolution value, and the frame rate obtaining module determines the frame rate value FPS of the OLED screen according to the definition of the resolution value and the length and width of the OLED screen of the TIMING parameter.
In one embodiment, the superimposing unit includes:
the gradient value judging module is used for judging whether the gradient value LS is a positive value or not;
and the gradual change module is used for gradually increasing the gradient value LS to the current brightness value LN to obtain a first target brightness value with the brightness larger than the current brightness value LN if the current brightness value LN is a positive value, and gradually decreasing the gradient value LS to the current brightness value LN to obtain a second target brightness value with the brightness smaller than the current brightness value LN if the current brightness value LN is a negative value.
Specifically, the gradient value judging module judges whether the gradient value LS is a positive value or a negative value, the gradient module is configured to gradually superimpose the positive gradient value LS on the current luminance value LN when the gradient value LS is judged to be the positive value, to finally obtain a first target luminance value whose luminance is greater than the current luminance value LN, and when the gradient value LS is judged to be the negative value, the gradient module gradually superimposes the negative gradient value on the current luminance value LN, to finally obtain a second target luminance value whose luminance is less than the current luminance value LN.
In one embodiment, an apparatus for OLED panel backlight adjustment includes:
the interface channel unit is used for acquiring a transmission pipeline value;
the frequency unit is used for obtaining a standard frequency value PH of the screen according to the transmission pipeline value and the frame rate value FPS;
the duration unit is used for acquiring the total brightness change duration T according to the standard frequency value PH and the brightness interval L;
and the duration gradient unit is used for acquiring the gradient duration TS according to the total brightness change duration T and the frame rate value FPS.
Specifically, the interface channel unit is used for acquiring a transmission pipeline value, wherein the transmission pipeline value is the number of pipelines for data transmission; the frequency unit is used for acquiring a standard frequency value PH, wherein the standard frequency value PH is the speed of refreshing the OLED screen by the frame rate value FPS; the duration unit is used for acquiring a total brightness change duration T, wherein the total brightness change duration T is the total duration required by the gradual change of the current brightness value LN to the target brightness value LT; the duration gradient unit is configured to obtain a gradient duration TS, where the gradient duration TS is a duration required by superimposing each gradient value LS.
During specific implementation, firstly, the number of pipelines for data transmission of the OLED screen is acquired through the interface channel unit, so that the refresh speed of the OLED screen is high as the number of the pipelines for data transmission is large, the standard frequency value PH is correspondingly acquired through the frequency unit according to the number of the pipelines for data transmission (namely, the transmission pipeline value) of the OLED screen, then, the total brightness change duration T is acquired through the duration unit according to the standard frequency value PH and the brightness interval L, and finally, the gradient duration TS is acquired through the duration gradient unit according to the total brightness change duration T and the frame rate value FPS.
In one embodiment, the superimposing unit includes:
the gradual change module is used for acquiring a brightness gradual change value N according to the gradient value LS and the gradient duration TS;
and the superposition driving module is used for driving the brightness gradient value N to be superposed so as to finish the gradient of the current brightness value LN to the target brightness value.
Specifically, the gradual change module is used for acquiring a brightness gradual change value N, wherein the brightness gradual change value N is a set of gradient time lengths TS required by the superposition of gradient values LS of the brightness and the superposition of a single gradient value LS; and the superposition driving module is used for driving the brightness gradual change value N to be gradually superposed and added with the current brightness value LN, and finally obtaining the target brightness value LT.
During specific implementation, firstly, the gradual change module acquires a brightness gradual change value N according to the gradient value LS and the gradient duration TS, then, the superposition driving module superposes the brightness gradual change value N by driving the brightness gradual change value N, and finally, the current brightness value LN is gradually changed to the target brightness value LT.
In one embodiment, the superimposing unit further comprises:
and the interval calculation module is used for calculating the brightness interval L: l is LT-LN;
and the duration calculation module is used for calculating the total brightness change duration T: t is L/PH;
and the gradual change calculation module is used for calculating a brightness gradual change value N: the frame rate value FPS is obtained by the steps of LS (L/FPS), TS (T/FPS) and N (LS) TS, wherein the LS TS is the OLED screen brightness change performed by each frame of the frame rate value FPS;
a superposition calculation module, configured to calculate a gradual change from the current luminance value LN to the target luminance value LT: LT is LN + Nx, where x is the number of times the luminance gradation value N is superimposed, that is, Nx is the same number of times the luminance gradation value N is superimposed.
Specifically, the interval calculation module 10c is configured to calculate a difference value obtained by subtracting the current luminance value LN from the target luminance value LT; the duration calculation module 10d is configured to calculate a residual value of the luminance interval L except the standard frequency value PH; the gradient calculation module 10e is configured to calculate a brightness gradient value N, where the brightness gradient value N is calculated in two steps, the first step of calculating the gradient time length TS is that the total brightness change time length T excludes a residual value of the frame rate value FPS, the second step of calculating the gradient value LS is that the brightness interval L excludes a residual value of the frame rate value FPS, and finally, the brightness gradient value N is obtained by combining the gradient time length TS and the gradient value LS, that is, the brightness gradient value N is an OLED screen brightness change performed by each frame of the frame rate value FOS; the superposition calculation module 10f is configured to calculate a sum obtained by adding an equivalent superposition of the current luminance value LN and the preset luminance gradient value N.
In one embodiment, an apparatus for OLED panel backlight adjustment includes:
a luminance value judgment unit for judging whether the target luminance value LT reaches a preset luminance value;
and the reminding unit is used for generating reminding information if the preset brightness value is reached so as to remind a user that the OLED screen is easily heated due to overhigh brightness.
Specifically, the preset brightness value is preset by the manufacturer, in order to prevent ambient light from raising the brightness of the OLED screen, the OLED screen is prone to being heated, the service life of the OLED screen is shortened, and user experience is reduced, whether the target brightness value reaches the preset brightness value is judged through the brightness value judging unit, the reminding unit generates reminding information, the reminding information is used for reminding a user that the brightness of the target brightness value LT of the OLED screen is too high, it should be understood that the higher the brightness of the OLED screen is, the higher the required power is, the higher the power is, the temperature of the OLED screen is raised due to the increase of the power, and the reminding information is used for reminding the user that the current brightness of the OLED screen.
In specific implementation, after the OLED receives ambient light and then the current brightness is improved to the target brightness, whether the brightness value of the target brightness reaches the preset brightness value or not is judged through the brightness value judging unit, and if the target brightness reaches the preset brightness value, the reminding unit generates reminding information and displays the reminding information on the OLED screen so as to remind a user that the OLED screen is possibly heated currently.
In one embodiment, an apparatus for OLED panel backlight adjustment includes:
an instruction unit for generating a cooling instruction;
and the driving unit is used for starting the cooling equipment arranged in the OLED screen according to the cooling instruction so as to reduce the temperature of the OLED screen.
Specifically, the cooling instruction is generated through the instruction unit after reminding information is displayed on the OLED screen, the cooling instruction is used for reducing the temperature of the OLED screen, and the driving unit receives the cooling instruction to start the cooling device arranged inside the OLED screen so as to reduce the temperature of the OLED screen.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A method for adjusting backlight of an OLED screen is characterized by comprising the following steps:
determining a brightness interval L according to an acquired current brightness value LN and a target brightness value LT of the OLED screen, wherein the target brightness value is a brightness value determined according to ambient light around the OLED screen;
determining a gradient value LS for equally distinguishing the brightness interval L according to the obtained frame rate value FPS of the OLED screen;
acquiring a transmission pipeline value;
obtaining a standard frequency value PH of a screen according to the transmission pipeline value and the frame rate value FPS;
acquiring the total brightness change duration T according to the standard frequency value PH and the brightness interval L;
obtaining a gradient duration TS according to the total brightness change duration T and the frame rate value FPS;
acquiring a brightness gradient value N according to the gradient value LS and the gradient duration TS;
and driving the brightness gradient value N to be superposed until the current brightness value LN of the OLED screen is gradually changed into the target brightness value LT.
2. The method for adjusting the backlight of the OLED screen according to claim 1, wherein the step of determining the luminance interval L according to the obtained current luminance value LN and the target luminance value LT of the OLED screen includes:
identifying the current display brightness of the OLED screen to obtain a current brightness value LN;
acquiring the brightness degree of ambient light around the OLED screen;
determining a target brightness value LT of the OLED screen according to the brightness degree;
and identifying the brightness difference between the current brightness value LN and the target brightness value to obtain a brightness interval L.
3. The method of OLED screen backlight adjustment according to claim 1, wherein the step of driving the luminance ramp values N to be superimposed until the current luminance value LN of the OLED screen is gradually changed to the target luminance value LT comprises:
judging whether the gradient value LS is a positive value or not;
if the current brightness value LN is a positive value, gradually increasing the brightness gradient value N to obtain a first target brightness value with brightness greater than the current brightness value LN, otherwise, gradually decreasing the brightness gradient value N to obtain a second target brightness value with brightness less than the current brightness value LN.
4. The method of OLED screen backlight adjustment according to claim 1, wherein said step of driving the luminance ramp values N to superimpose until the current luminance value LN of the OLED screen is ramped to the target luminance value LT comprises:
judging whether the target brightness value LT reaches a preset brightness value or not;
and if the preset brightness value is reached, generating reminding information to remind a user that the OLED screen is easily heated due to overhigh brightness.
5. The method of claim 4, wherein the step of generating a notification message to notify a user that the OLED screen is vulnerable to heat due to the too high brightness of the OLED screen comprises:
generating a cooling instruction;
and starting cooling equipment arranged in the OLED screen according to the cooling instruction so as to reduce the temperature of the OLED screen.
6. An apparatus for backlight adjustment of an OLED panel, comprising:
the interval unit is used for determining a brightness interval L according to the obtained current brightness value LN and a target brightness value LT of the OLED screen, wherein the target brightness value is a brightness value determined according to ambient light around the OLED screen;
the gradient unit is used for determining a gradient value LS for equally distinguishing the brightness interval L according to the obtained frame rate value FPS of the OLED screen;
the interface channel unit is used for acquiring a transmission pipeline value;
the frequency unit is used for obtaining a standard frequency value PH of the screen according to the transmission pipeline value and the frame rate value FPS;
the duration unit is used for acquiring the total brightness change duration T according to the standard frequency value PH and the brightness interval L;
the duration gradient unit is used for acquiring a gradient duration TS according to the total brightness change duration T and the frame rate value FPS;
the superposition unit is used for gradually superposing the gradient value LS on the current brightness value LN until the brightness of the OLED screen is gradually changed into the target brightness value LT;
the superimposing unit includes:
the gradual change module is used for acquiring a brightness gradual change value N according to the gradient value LS and the gradient duration TS;
and the superposition driving module is used for driving the brightness gradient value N to be superposed to finish gradient change of the current brightness value LN to the target brightness value LT.
7. The OLED screen backlight adjustment device of claim 6, wherein the interval unit comprises:
the first identification module is used for identifying the current display brightness of the OLED screen to obtain a current brightness value LN;
the brightness degree module is used for acquiring the brightness degree of the ambient light around the OLED screen;
the measuring module is used for determining a target brightness value LT of the OLED screen according to the brightness degree;
and the second identification module is used for identifying the brightness difference between the current brightness value LN and the target brightness value to obtain a brightness interval L.
8. The OLED screen backlight adjustment apparatus of claim 6, wherein the superimposing unit comprises:
the gradient value judging module is used for judging whether the gradient value LS is a positive value or not;
and the gradual change module is used for gradually increasing the brightness gradual change value N to the current brightness value LN to obtain a first target brightness value with the brightness being greater than the current brightness value LN if the current brightness value LN is a positive numerical value, and gradually decreasing the brightness gradual change value N to obtain a second target brightness value with the brightness being less than the current brightness value LN if the current brightness value LN is a negative numerical value.
9. The OLED screen backlight adjustment device of claim 6, comprising:
a luminance value judgment unit for judging whether the target luminance value LT reaches a preset luminance value;
and the reminding unit is used for generating reminding information if the preset brightness value is reached so as to remind a user that the OLED screen is easily heated due to overhigh brightness.
10. The OLED screen backlight modulating device of claim 9, further comprising:
an instruction unit for generating a cooling instruction;
and the driving unit is used for starting cooling equipment arranged in the OLED screen according to the cooling instruction so as to reduce the temperature of the OLED screen.
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| CN111179882B (en) * | 2020-03-04 | 2021-07-16 | Oppo（重庆）智能科技有限公司 | Display screen brightness adjusting method and device, electronic equipment and storage medium |
| CN113838416B (en) * | 2020-06-24 | 2023-01-03 | 深圳市万普拉斯科技有限公司 | Screen protection method and device, computer equipment and storage medium |
| CN112447137B (en) * | 2020-11-30 | 2022-04-08 | 昆山工研院新型平板显示技术中心有限公司 | Display panel compensation method and device and display device |
| CN112509527A (en) * | 2020-12-09 | 2021-03-16 | 上海欧菲智能车联科技有限公司 | Backlight adjusting method and device |
| CN113326029B (en) * | 2021-05-13 | 2024-03-22 | 深圳恒之源技术股份有限公司 | LED lamp brightness adjusting method, system and computer readable storage medium |
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