CN109743518A - Display screen guard method, television terminal, system and storage medium - Google Patents
Display screen guard method, television terminal, system and storage medium Download PDFInfo
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Abstract
The invention discloses a kind of display screen guard method, television terminal, system and storage mediums, this method comprises: calculating the absolute value of the difference of the average brightness of current region present frame and the average brightness of current region previous frame；Judge absolute value whether less than the first preset difference value threshold value and greater than the second preset difference value threshold value；If so, judging duration of the absolute value less than the first preset difference value threshold value or continuing whether frame number corresponds to more than or equal to preset duration or default frame number；If so, obtaining the region average brightness of current region in preset duration or default frame number, and judge whether region average brightness is greater than the first predetermined luminance threshold value；If so, the difference of zoning average brightness and predesigned compensation value, and the display brightness for taking the difference as current region is shown.The present invention, which is realized, reduces brightness of image when tv brightness signal variation is unobvious, to achieve the purpose that alleviating ghost generates, and then improves the service life of screen body.
Description
Technical field
The present invention relates to ntelligent television technolog field more particularly to a kind of display screen guard method, television terminal, system and
Storage medium.
Background technique
OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) TV is that one kind does not need backlight
Organic self-luminous TV in source, compared with common LED TV, OLED TV has a high contrast, high-resolution, wider array of visual
Angle, high dynamic response time, ultimate attainment frivolous advantage.But OLED TV also has its self-defect, since it is each
Pixel freely shines, and will generate ghost when the long period resting on still picture or incomplete still picture, be commonly called as burn-in,
This ghost phenomena if there is will be seriously it is irreversible, screen end will be unable to by compensation repaired.
Existing OLED TV is while the television master chip meeting in broadcasting pictures by compensating to pixel in screen
The mobile processing of pixel is carried out to signal pattern, to reduce the probability of ghost appearance or by making the interface without operation or without information source
Into screen saver mode (the different picture of carousel or advertisement), prevent tableaux from television occur, with this come avoid ghost go out
It is existing.And the mobile movement that pixel is also only carried out in limited range of pixel of television, shift position is limited, for broadcasting
It puts the biggish picture of color lump in image not working, the long period stops or can generate ghost.It is little to the fluctuation of some pictures
TV play or the dynamic menus such as variety show, only the fluctuation of some image is larger in picture, but rest part variation is smaller,
But still picture cannot be treated as, playing this film source for a long time still has very maximum probability to generate ghost.
Summary of the invention
The main purpose of the present invention is to provide a kind of display screen guard method, television terminal, system and storage medium, purports
Solving the problems, such as that the prior art can not be effectively treated OLED TV ghost.
To achieve the above object, the present invention provides a kind of display screen guard method, and the display screen guard method is applied to
Television terminal, the display screen of the television terminal are provided with multiple regions, the display screen guard method the following steps are included:
Calculate the absolute value of the difference of the average brightness of current region present frame and the average brightness of current region previous frame；
Judge the absolute value whether less than the first preset difference value threshold value and greater than the second preset difference value threshold value；
If the absolute value is less than the first preset difference value threshold value and is greater than the second preset difference value threshold value, judge described absolute
Value is less than the duration of the first preset difference value threshold value or continues whether frame number corresponds to more than or equal to preset duration or pre-
If frame number；
If duration or lasting frame number are corresponding more than or equal to preset duration or default frame number, obtain described pre-
If the region average brightness of current region in duration or the default frame number, and judge whether the region average brightness is greater than
First predetermined luminance threshold value；
If the region average brightness is greater than the first predetermined luminance threshold value, the region average brightness and default benefit are calculated
The difference of value is repaid, and the region average brightness and the difference of predesigned compensation value are shown as the display brightness of current region
Show.
Optionally, if the duration or lasting frame number correspond to and be more than or equal to preset duration or default frame number,
The region average brightness of current region in the preset duration or the default frame number is then obtained, and judges that the region is average
Whether brightness was greater than after the step of the first predetermined luminance threshold value further include:
If the region average brightness is less than or equal to the first predetermined luminance threshold value, current region present frame is judged
Whether average brightness is less than or equal to the first predetermined luminance threshold value；
If the average brightness of the current region present frame is less than or equal to the first predetermined luminance threshold value, not right
The display brightness of current region compensates；
It is pre- by described first if the average brightness of the current region present frame is greater than the first predetermined luminance threshold value
If luminance threshold is shown as the display brightness of current region.
Optionally, described to judge the absolute value whether less than the first preset difference value threshold value and greater than the second preset difference value threshold
After the step of value further include:
If the absolute value is more than or equal to the first preset difference value threshold value, the display brightness of current region is not carried out
Compensation.
Optionally, described to judge the absolute value whether less than the first preset difference value threshold value and greater than the second preset difference value threshold
After the step of value further include:
If the absolute value is less than or equal to the second preset difference value threshold value, judge that the absolute value is less than or equal to
The duration of second preset difference value threshold value continues whether frame number is more than or equal to preset duration or default frame number；
If duration or lasting frame number are corresponding more than or equal to preset duration or default frame number, obtain described pre-
If the region average brightness of current region in duration or the default frame number, and judge whether the region average brightness is greater than
Second predetermined luminance threshold value；
If the region average brightness is greater than the second predetermined luminance threshold value, the region average brightness and default benefit are calculated
The difference of value is repaid, and the region average brightness and the difference of predesigned compensation value are shown as the display brightness of current region
Show.
Optionally, if the duration or lasting frame number correspond to and be more than or equal to preset duration or default frame number,
The region average brightness of current region in the preset duration or the default frame number is then obtained, and judges that the region is average
Whether brightness was greater than after the step of the second predetermined luminance threshold value further include:
If the region average brightness is less than or equal to the second predetermined luminance threshold value, current region present frame is judged
Whether average brightness is less than or equal to the second predetermined luminance threshold value；
If the average brightness of the current region present frame is less than or equal to the second predetermined luminance threshold value, not right
The display brightness of current region compensates；
It is pre- by described second if the average brightness of the current region present frame is greater than the second predetermined luminance threshold value
If luminance threshold is shown as the display brightness of current region.
Optionally, if the absolute value is less than or equal to the second preset difference value threshold value, judge the absolute value
Less than or equal to the second preset difference value threshold value duration or continue frame number whether be more than or equal to preset duration or
After the step of default frame number further include:
If the duration continues frame number less than preset duration or default frame number, not to the display of current region
Brightness compensates.
Optionally, if the absolute value is less than the first preset difference value threshold value and is greater than the second preset difference value threshold value,
Judge duration of the absolute value less than the first preset difference value threshold value or continues whether frame number corresponds to more than or equal to pre-
If after the step of duration or default frame number further include:
If the duration continues frame number less than preset duration or default frame number, not to the display of current region
Brightness compensates.
The present invention also provides a kind of television terminal, the television terminal includes:
Computing module, for calculate current region present frame average brightness and current region previous frame average brightness it
Absolute value of the difference；
Judgment module, for judging the absolute value whether less than the first preset difference value threshold value and greater than the second preset difference value
Threshold value；
First obtains module, if less than the first preset difference value threshold value and being greater than the second preset difference value threshold for the absolute value
Value then judges duration of the absolute value less than the first preset difference value threshold value or whether continues frame number to should be greater than or wait
In preset duration or default frame number；
Second obtains module, if being more than or equal to preset duration or default frame for stating duration or continuing frame number
Number, then obtain the region average brightness of current region in preset duration or default frame number, judge that the region average brightness is
It is no to be greater than the first predetermined luminance threshold value；
It is flat to calculate the region if being greater than the first predetermined luminance threshold value for the region average brightness for compensating module
The difference of equal brightness and predesigned compensation value, and using the difference of the region average brightness and predesigned compensation value as current region
Display brightness is shown.
In addition, to achieve the above object, the present invention also provides a kind of display screens to protect system, the display screen protects system
Include: memory, processor and be stored in the display screen protective program that can be run on the memory and on the processor,
The step of display screen protective program realizes display screen guard method as described above when being executed by the processor.
In addition, to achieve the above object, the present invention also provides a kind of storage medium, display is stored on the storage medium
Shield protective program, the display screen protective program realizes the step of display screen guard method as described above when being executed by processor
Suddenly.
Display screen guard method, television terminal, system and storage medium proposed by the present invention are worked as by calculating current region
The absolute value of the difference of the average brightness of the average brightness and current region previous frame of previous frame；Judge the absolute value whether less than
One preset difference value threshold value and be greater than the second preset difference value threshold value；If the absolute value is less than the first preset difference value threshold value and is greater than the
Two preset difference value threshold values then judge whether duration of the absolute value less than the first preset difference value threshold value or lasting frame number are right
It should be greater than or be equal to preset duration or default frame number；If duration or lasting frame number correspond to when being more than or equal to default
Long perhaps default frame number then obtains the region average brightness of current region in the preset duration or the default frame number, and
Judge whether the region average brightness is greater than the first predetermined luminance threshold value；If the region average brightness is preset bright greater than first
Threshold value is spent, then calculates the difference of the region average brightness and predesigned compensation value, and by the region average brightness and preset benefit
The difference for repaying value is shown as the display brightness of current region.The present invention, which is realized, shows that signal intensity is unobvious in OLED
When reduce brightness of image, thus achieve the purpose that alleviate ghost generate, and then improve OLED screen body service life.
Detailed description of the invention
Fig. 1 is the terminal structure schematic diagram for the hardware running environment that the embodiment of the present invention is related to；
Fig. 2 is television terminal function module diagram of the invention；
Fig. 3 is the flow diagram of the display screen of the invention guard method first embodiment.
The object of the invention is realized, the embodiments will be further described with reference to the accompanying drawings for functional characteristics and advantage.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The primary solutions of the embodiment of the present invention are: on the average brightness and current region for calculating current region present frame
The absolute value of the difference of the average brightness of one frame；Judge whether the absolute value is less than the first preset difference value threshold value and pre- greater than second
If difference threshold；If the absolute value is less than the first preset difference value threshold value and is greater than the second preset difference value threshold value, described in judgement
Absolute value less than the first preset difference value threshold value duration or continue frame number whether correspond to more than or equal to preset duration or
Person presets frame number；If duration or lasting frame number are corresponding more than or equal to preset duration or default frame number, institute is obtained
The region average brightness of current region in preset duration or the default frame number is stated, and whether judges the region average brightness
Greater than the first predetermined luminance threshold value；If the region average brightness is greater than the first predetermined luminance threshold value, it is flat to calculate the region
The difference of equal brightness and predesigned compensation value, and using the difference of the region average brightness and predesigned compensation value as current region
Display brightness is shown.The present invention, which is realized, reduces brightness of image when OLED shows that signal intensity is unobvious, to reach
Alleviate the purpose that ghost generates, and then improves the service life of OLED screen body.
Since OLED TV in the prior art is while the television in broadcasting pictures by compensating to pixel in screen
Master chip can carry out the mobile processing of pixel to signal pattern, to reduce the probability of ghost appearance or by making without operation or without letter
The interface in source enters screen saver mode (the different picture of carousel or advertisement), prevent tableaux from television occur, is avoided with this
The appearance of ghost.And the mobile movement that pixel is also only carried out in limited range of pixel of television, shift position has
Limit does not work for playing the biggish picture of color lump in image, and the long period stops or can generate ghost.To some pictures
The dynamic menus such as little TV play or variety show are fluctuated, some image fluctuation is larger in picture, but rest part
Variation is smaller, but cannot treat as still picture, and playing this film source for a long time still has very maximum probability to generate ghost.
The embodiment of the present invention proposes a solution, and it is bright that the reduction image when showing that signal intensity is unobvious may be implemented
Degree, to alleviate the time of ghost generation.
As shown in Figure 1, Fig. 1 is the terminal structure schematic diagram for the hardware running environment that the embodiment of the present invention is related to.
The terminal of that embodiment of the invention is television terminal.
As shown in Figure 1, the terminal may include: processor 1001, such as CPU, network interface 1004, user interface
1003, memory 1005, communication bus 1002.Wherein, communication bus 1002 is for realizing the connection communication between these components.
User interface 1003 may include display screen (Display), input unit such as keyboard (Keyboard), optional user interface
1003 can also include standard wireline interface and wireless interface.Network interface 1004 optionally may include that the wired of standard connects
Mouth, wireless interface (such as WI-FI interface).Memory 1005 can be high speed RAM memory, be also possible to stable memory
(non-volatile memory), such as magnetic disk storage.Memory 1005 optionally can also be independently of aforementioned processor
1001 storage device.
Optionally, terminal can also include camera, RF (Radio Frequency, radio frequency) circuit, sensor, audio
Circuit, WiFi module etc..Wherein, sensor such as optical sensor, motion sensor and other sensors.Specifically, light
Sensor may include ambient light sensor and proximity sensor, wherein ambient light sensor can according to the light and shade of ambient light come
The brightness of display screen is adjusted, proximity sensor can close display screen and/or backlight when terminal device is moved in one's ear.Certainly,
Terminal can also configure the other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, no longer superfluous herein
It states.
It will be understood by those skilled in the art that the restriction of the not structure paired terminal of terminal structure shown in Fig. 1, can wrap
It includes than illustrating more or fewer components, perhaps combines certain components or different component layouts.
As shown in Figure 1, as may include that operating terminal, network are logical in a kind of memory 1005 of computer storage medium
Believe module, Subscriber Interface Module SIM and display screen protective program.
In terminal shown in Fig. 1, network interface 1004 is mainly used for connecting background server, carries out with background server
Data communication；User interface 1003 is mainly used for connecting client (user terminal), carries out data communication with client；And processor
1001 can be used for calling the display screen protective program stored in memory 1005, and execute following operation:
Calculate the absolute value of the difference of the average brightness of current region present frame and the average brightness of current region previous frame；
Judge the absolute value whether less than the first preset difference value threshold value and greater than the second preset difference value threshold value；
If the absolute value is less than the first preset difference value threshold value and is greater than the second preset difference value threshold value, judge described absolute
Value is less than the duration of the first preset difference value threshold value or continues whether frame number corresponds to more than or equal to preset duration or pre-
If frame number；
If duration or lasting frame number are corresponding more than or equal to preset duration or default frame number, obtain described pre-
If the region average brightness of current region in duration or the default frame number, and judge whether the region average brightness is greater than
First predetermined luminance threshold value；
If the region average brightness is greater than the first predetermined luminance threshold value, the region average brightness and default benefit are calculated
The difference of value is repaid, and the region average brightness and the difference of predesigned compensation value are shown as the display brightness of current region
Show.
Further, processor 1001 can call the display screen protective program stored in memory 1005, also execute with
Lower operation:
If the region average brightness is less than or equal to the first predetermined luminance threshold value, current region present frame is judged
Whether average brightness is less than or equal to the first predetermined luminance threshold value；
If the average brightness of the current region present frame is less than or equal to the first predetermined luminance threshold value, not right
The display brightness of current region compensates；
It is pre- by described first if the average brightness of the current region present frame is greater than the first predetermined luminance threshold value
If luminance threshold is shown as the display brightness of current region.
Further, processor 1001 can call the display screen protective program stored in memory 1005, also execute with
Lower operation:
If the absolute value is more than or equal to the first preset difference value threshold value, the display brightness of current region is not carried out
Compensation.
Further, processor 1001 can call the display screen protective program stored in memory 1005, also execute with
Lower operation:
If the absolute value is less than or equal to the second preset difference value threshold value, judge that the absolute value is less than or equal to
The duration of second preset difference value threshold value continues whether frame number is more than or equal to preset duration or default frame number；
If duration or lasting frame number are corresponding more than or equal to preset duration or default frame number, obtain described pre-
If the region average brightness of current region in duration or the default frame number, and judge whether the region average brightness is greater than
Second predetermined luminance threshold value；
If the region average brightness is greater than the second predetermined luminance threshold value, the region average brightness and default benefit are calculated
The difference of value is repaid, and the region average brightness and the difference of predesigned compensation value are shown as the display brightness of current region
Show.
Further, processor 1001 can call the display screen protective program stored in memory 1005, also execute with
Lower operation:
If the region average brightness is less than or equal to the second predetermined luminance threshold value, current region present frame is judged
Whether average brightness is less than or equal to the second predetermined luminance threshold value；
If the average brightness of the current region present frame is less than or equal to the second predetermined luminance threshold value, not right
The display brightness of current region compensates；
It is pre- by described second if the average brightness of the current region present frame is greater than the second predetermined luminance threshold value
If luminance threshold is shown as the display brightness of current region.
Further, processor 1001 can call the display screen protective program stored in memory 1005, also execute with
Lower operation:
If the duration continues frame number less than preset duration or default frame number, not to the display of current region
Brightness compensates.
Further, processor 1001 can call the display screen protective program stored in memory 1005, also execute with
Lower operation:
If the duration continues frame number less than preset duration or default frame number, not to the display of current region
Brightness compensates.
Technical solution provided by the invention, the display screen protection terminal are called in memory 1005 by processor 1001
The display screen protective program of storage, to realize step: calculating the average brightness and current region previous frame of current region present frame
Average brightness absolute value of the difference；Judge whether the absolute value is less than the first preset difference value threshold value and default poor greater than second
It is worth threshold value；If the absolute value is less than the first preset difference value threshold value and is greater than the second preset difference value threshold value, judge described absolute
Value is less than the duration of the first preset difference value threshold value or continues whether frame number corresponds to more than or equal to preset duration or pre-
If frame number；If duration or lasting frame number are corresponding more than or equal to preset duration or default frame number, obtain described pre-
If the region average brightness of current region in duration or the default frame number, and judge whether the region average brightness is greater than
First predetermined luminance threshold value；If the region average brightness is greater than the first predetermined luminance threshold value, it is average bright to calculate the region
The difference of degree and predesigned compensation value, and using the difference of the region average brightness and predesigned compensation value as the display of current region
Brightness is shown.The present invention, which is realized, reduces brightness of image when OLED shows that signal intensity is unobvious, to reach alleviation
The purpose that ghost generates, and then improve the service life of OLED screen body.
Fig. 2 is participated in, Fig. 2 is television terminal function module diagram of the invention.
The present invention also provides a kind of television terminal, the television terminal includes:
Computing module 10, for calculating the average brightness of current region present frame and the average brightness of current region previous frame
Absolute value of the difference；
Judgment module 20, for judging whether the absolute value is less than the first preset difference value threshold value and default poor greater than second
It is worth threshold value；
First obtains module 30, if less than the first preset difference value threshold value and being greater than the second preset difference value for the absolute value
Threshold value, then judge duration of the absolute value less than the first preset difference value threshold value or continue frame number whether to should be greater than or
Equal to preset duration or default frame number；
Second obtains module 40, if for stating duration or lasting frame number more than or equal to preset duration or presetting
Frame number then obtains the region average brightness of current region in preset duration or default frame number, judges the region average brightness
Whether the first predetermined luminance threshold value is greater than；
Compensating module 50 calculates the region if being greater than the first predetermined luminance threshold value for the region average brightness
The difference of average brightness and predesigned compensation value, and using the difference of the region average brightness and predesigned compensation value as current region
Display brightness shown.
Television terminal specific embodiment of the present invention and each embodiment of display screen guard method are essentially identical, no longer superfluous herein
It states.
The present invention provides a kind of storage medium, the storage medium is stored with one or more than one program, described
One or more than one program can also be executed by one or more than one processor for realizing any of the above-described institute
The step of display screen guard method stated.
Storage medium specific embodiment of the present invention and each embodiment of display screen guard method are essentially identical, no longer superfluous herein
It states.
Based on above-mentioned hardware configuration, the display screen of the invention guard method embodiment is proposed.
It is the flow diagram of the display screen of the invention guard method first embodiment referring to Fig. 3, Fig. 3.
As shown in figure 3, first embodiment of the invention provides a kind of display screen guard method, the display screen guard method is answered
For television terminal, the display screen of the television terminal is provided with multiple regions, and the display screen guard method includes following step
It is rapid:
Step S1 calculates the exhausted of the difference of the average brightness of current region present frame and the average brightness of current region previous frame
To value；
OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) TV is that one kind does not need backlight
Organic self-luminous TV in source, compared with common LED TV, OLED TV has a high contrast, high-resolution, wider array of visual
Angle, high dynamic response time, ultimate attainment frivolous advantage.But OLED TV also has its self-defect, since it is each
Pixel freely shines, and will generate ghost when the long period resting on still picture or incomplete still picture, be commonly called as burn-in,
This ghost phenomena if there is will be seriously it is irreversible, screen end will be unable to by compensation repaired.
Existing OLED TV is while the television master chip meeting in broadcasting pictures by compensating to pixel in screen
The mobile processing of pixel is carried out to signal pattern, to reduce the probability of ghost appearance or by making the interface without operation or without information source
Into screen saver mode (the different picture of carousel or advertisement), prevent tableaux from television occur, with this come avoid ghost go out
It is existing.And the mobile movement that pixel is also only carried out in limited range of pixel of television, shift position is limited, for broadcasting
It puts the biggish picture of color lump in image not working, the long period stops or can generate ghost.It is little to the fluctuation of some pictures
TV play or the dynamic menus such as variety show, only the fluctuation of some image is larger in picture, but rest part variation is smaller,
But still picture cannot be treated as, playing this film source for a long time still has very maximum probability to generate ghost.
It is understood that display screen guard method proposed by the present invention, is suitable for ntelligent television technolog field.
In the present embodiment, under existing television frame, television terminal display screen is divided into several regions, the area divided
Domain is more, finer to the detection effect of image, further, more targeted to the luminance compensation in region, and ghost is eliminated
Effect is more preferable.
Then it is monitored respectively simultaneously by picture brightness signal of the television terminal master chip to this several region, and
The average brightness of current region present frame and the average brightness of current region previous frame are calculated in real time, then to calculate current region current
The absolute value of the difference of the average brightness of the average brightness and current region previous frame of frame.Current region can be in several regions
Any one region.
Wherein, the absolute value of the difference table of the average brightness of the average brightness of current region present frame and current region previous frame
What is shown is the severe degree of brightness of image variation.The absolute value is bigger, indicates that brightness of image variation is bigger, is less susceptible to generate residual
Shadow；The absolute value is smaller, indicates that brightness of image variation is smaller, is more easy to produce ghost, more needs to carry out luminance compensation to it, from
And alleviate a possibility that ghost generates.
Whether step S2 judges the absolute value less than the first preset difference value threshold value and greater than the second preset difference value threshold value；
The average brightness of the average brightness and current region previous frame that get current region present frame difference it is absolute
After value, judge the absolute value whether less than the first preset difference value threshold value and greater than the second preset difference value threshold value.
If the absolute value is more than or equal to the first preset difference value threshold value, illustrate that the brightness of image in the region has occurred acutely
Variation, it is not easy to generate ghost, therefore the display brightness of current region do not compensated；If the absolute value is pre- less than first
If difference threshold and be greater than the second preset difference value threshold value, illustrate the brightness of image in the region variation fluctuation it is moderate, tend towards stability,
But still there is the possibility for generating ghost, need further to determine it；If it is pre- that the absolute value is less than or equal to second
If difference threshold, illustrates that the brightness of image variation in the region is smaller, ghost may be easy to produce, need to carry out it further
Determine.
Wherein, the first preset difference value threshold value is greater than the second preset difference value threshold value.
Step S3 judges if the absolute value is less than the first preset difference value threshold value and is greater than the second preset difference value threshold value
Whether the absolute value corresponds to when being more than or equal to default less than the duration of the first preset difference value threshold value or lasting frame number
Long or default frame number；
If the absolute value is less than the first preset difference value threshold value and is greater than the second preset difference value threshold value, illustrate the image in the region
The variation fluctuation of brightness is moderate, tends towards stability, but still have the possibility for generating ghost, needs further to determine it.
Specifically, further determination step include: obtain the absolute value less than the first preset difference value threshold value it is lasting when
Long or lasting frame number, judges the duration or continues whether frame number is more than or equal to preset duration or default frame number.
In the present embodiment, as long as the absolute value begins to accumulation and calculate the absolute value less than the first preset difference value threshold value
Duration or lasting frame number less than the first preset difference value threshold value are getting the absolute value less than the first preset difference value threshold value
Duration or when continuing frame number, judge duration or continue whether frame number is more than or equal to preset duration or default
Frame number.Wherein, accumulation calculating is continuous, continual, if the absolute value of intermediate a certain frame is more than or equal to first in advance
If difference threshold, then the aggregate-value is reset, i.e. resetting duration or lasting frame number.
Wherein, user or operation maintenance personnel can self-setting preset duration or the size of default frame number as needed, this
Embodiment is without limitation.
Step S4 is obtained if duration or lasting frame number are corresponding more than or equal to preset duration or default frame number
The region average brightness of current region in the preset duration or the default frame number is taken, and judges the region average brightness
Whether the first predetermined luminance threshold value is greater than；
If it is determined that duration or lasting frame number are more than or equal to preset duration or default frame number, then when obtaining default
The region average brightness of current region in long or default frame number, and judge the region average brightness whether be greater than first preset it is bright
Spend threshold value.
If region average brightness is greater than the first predetermined luminance threshold value, the region average brightness and predesigned compensation value are calculated
Difference, and shown the difference as the display brightness of current region；
If the region average brightness is less than or equal to the first predetermined luminance threshold value, the flat of current region present frame is judged
Whether equal brightness is less than or equal to the first predetermined luminance threshold value, if the average brightness of current region present frame be less than or
Equal to the first predetermined luminance threshold value, then the display brightness of current region is not compensated；If current region present frame is averaged
Brightness is greater than the first predetermined luminance threshold value, then shows using the first predetermined luminance threshold value as the display brightness of current region
Show.
Step S5 calculates the region average brightness if the region average brightness is greater than the first predetermined luminance threshold value
It is and the region average brightness and the difference of predesigned compensation value is bright as the display of current region with the difference of predesigned compensation value
Degree is shown.
In the present embodiment, if region average brightness is greater than the first predetermined luminance threshold value, the region average brightness is calculated
With the difference of predesigned compensation value, and shown the difference as the display brightness of current region.
Wherein, user or operation maintenance personnel can self-setting predesigned compensation value as needed size, the present embodiment do not do
It limits.
Supplemented by assistant's solution, enumerate a specific example: television terminal display screen be divided into M × N number of region, each region note
For MiNj, wherein 1≤i≤M, 1≤j≤N；The luminance signals for being defeated by screen body are divided into 0~255 grade, 0 grade of correspondence is most black, and 255 grades
Correspondence is most white；130≤the first preset difference value threshold values≤255,80≤the second preset difference value threshold value < 130；30≤default frame number≤
200；100≤the first predetermined luminance threshold value≤140；1≤predesigned compensation value≤10.
If the first preset difference value threshold value value is 150, the second preset difference value threshold value value is 100, and default frame number value is
30, the first predetermined luminance threshold value value be 120, predesigned compensation value be 1, calculate current region present frame average brightness MiNj with
The absolute value of the difference Y of the average brightness Mi ' Nj ' of current region previous frame, if Y is less than 150 and is greater than 100, and accumulative lasting frame
Number is equal to 30 frames, and present frame is the 30th frame, and the region average brightness X of current region is greater than 120 in 30 frames, then calculates area
Difference=X-1 of domain average brightness and predesigned compensation value, shows X-1 as the display brightness of current region.
The display screen guard method proposed through this embodiment, realize calculate current region present frame average brightness and
The absolute value of the difference of the average brightness of current region previous frame；Judge the absolute value whether less than the first preset difference value threshold value and
Greater than the second preset difference value threshold value；If the absolute value is less than the first preset difference value threshold value and is greater than the second preset difference value threshold value,
Then judge whether duration of the absolute value less than the first preset difference value threshold value or lasting frame number correspond to and be more than or equal to
Preset duration or default frame number；If duration or lasting frame number are corresponding more than or equal to preset duration or default frame
Number, then obtain the region average brightness of current region in the preset duration or the default frame number, and judge the region
Whether average brightness is greater than the first predetermined luminance threshold value；If the region average brightness is greater than the first predetermined luminance threshold value, count
The difference of the region average brightness and predesigned compensation value is calculated, and the difference of the region average brightness and predesigned compensation value is made
It is shown for the display brightness of current region.It is bright that the present invention realizes the reduction image when OLED shows that signal intensity is unobvious
Degree to achieve the purpose that alleviating ghost generates, and then improves the service life of OLED screen body.
Further, it is based on above-mentioned first embodiment shown in Fig. 3, proposes that the display screen of the invention guard method second is implemented
Example, in the present embodiment, after above-mentioned steps S2 further include:
Step S21, if the absolute value is more than or equal to the first preset difference value threshold value, not to the display of current region
Brightness compensates.
In the present embodiment, the difference of the average brightness of the average brightness of current region present frame and current region previous frame
Absolute value representation be brightness of image variation severe degree.The absolute value is bigger, indicates that brightness of image variation is bigger, does not allow more
It is also easy to produce ghost；The absolute value is smaller, indicates that brightness of image variation is smaller, is more easy to produce ghost, more needs to carry out it bright
Degree compensation, to alleviate a possibility that ghost generates.
The average brightness of the average brightness and current region previous frame that get current region present frame difference it is absolute
After value, if it is determined that the absolute value is more than or equal to the first preset difference value threshold value, illustrate that the brightness of image in the region has occurred
Violent variation, it is not easy to generate ghost, therefore the display brightness of current region not compensated.
Further, after above-mentioned steps S2 further include:
Step S22 judges that the absolute value is less than if the absolute value is less than or equal to the second preset difference value threshold value
Either whether it is more than or equal to preset duration equal to the duration of the second preset difference value threshold value or lasting frame number or presets
Frame number；
Step S23 is obtained if duration or lasting frame number are corresponding more than or equal to preset duration or default frame number
The region average brightness of current region in the preset duration or the default frame number is taken, and judges the region average brightness
Whether the second predetermined luminance threshold value is greater than；
Step S24 calculates the region average brightness if the region average brightness is greater than the second predetermined luminance threshold value
It is and the region average brightness and the difference of predesigned compensation value is bright as the display of current region with the difference of predesigned compensation value
Degree is shown.
In the present embodiment, if the difference of the average brightness of the average brightness of current region present frame and current region previous frame
Absolute value be less than or equal to the second preset difference value threshold value, illustrate the region brightness of image variation it is smaller, may be easy to produce
Raw ghost, needs further to determine it.
Specifically, if the absolute value be less than or equal to the second preset difference value threshold value, judge the absolute value be less than or
Whether it is more than or equal to preset duration or default frame number equal to the duration of the second preset difference value threshold value or lasting frame number；
If duration or lasting frame number are corresponding more than or equal to preset duration or default frame number, preset duration or pre- is obtained
If the region average brightness of current region in frame number, and judge whether the region average brightness is greater than the second predetermined luminance threshold value；
If region average brightness is greater than the second predetermined luminance threshold value, the difference of zoning average brightness and predesigned compensation value, and incites somebody to action
The difference is shown as the display brightness of current region.
Wherein, the second predetermined luminance threshold value is less than the first predetermined luminance threshold value.
Further, after above-mentioned steps S22 further include:
Step S221, if the duration or lasting frame number are less than preset duration or default frame number, not to current
The display brightness in region compensates.
If the absolute value is less than or equal to the second preset difference value threshold value, judge that the absolute value is less than or equal to second
The duration of preset difference value threshold value continues whether frame number is more than or equal to preset duration or default frame number；If continue
A possibility that long or lasting frame number is less than preset duration or default frame number, illustrates that duration is shorter, generate ghost is lower,
Therefore the display brightness of current region is not compensated.
Further, after above-mentioned steps S23 further include:
Step S231, if the region average brightness is less than or equal to the second predetermined luminance threshold value, proparea is worked as in judgement
Whether the average brightness of domain present frame is less than or equal to the second predetermined luminance threshold value；
Step S232, if the average brightness of the current region present frame is less than or equal to the second predetermined luminance threshold
Value, then do not compensate the display brightness of current region；
Step S233 will if the average brightness of the current region present frame is greater than the second predetermined luminance threshold value
The second predetermined luminance threshold value is shown as the display brightness of current region.
Specifically, it if duration or lasting frame number are corresponding more than or equal to preset duration or default frame number, obtains
The region average brightness of current region in preset duration or default frame number is taken, and judges whether the region average brightness is greater than
Two predetermined luminance threshold values illustrate preset duration or pre- if region average brightness is less than or equal to the second predetermined luminance threshold value
If the average value of the brightness of current region is lower in frame number, but average value cannot represent an example, then judge that current region is current
Whether the average brightness of frame is less than or equal to the second predetermined luminance threshold value, to less than or equal to the second predetermined luminance threshold
The uncompensation of value, equity are greater than compensating for the second predetermined luminance threshold value, and compensation way is to make the second predetermined luminance threshold value
It is shown for the display brightness of current region.
The display screen guard method proposed through this embodiment is in absolute value and is greater than or equal to the first preset difference value threshold
Value, and further judged less than or equal to the current region in the second preset difference value threshold range, it has substantially ensured bright
Spend the accuracy of compensation.
Further, it is based on above-mentioned first embodiment shown in Fig. 3, proposes that the display screen of the invention guard method third is implemented
Example, in the present embodiment, after above-mentioned steps S4 further include:
Step S41 judges current region if the region average brightness is less than or equal to the first predetermined luminance threshold value
Whether the average brightness of present frame is less than or equal to the first predetermined luminance threshold value；
Step S42, if the average brightness of the current region present frame is less than or equal to the first predetermined luminance threshold
Value, then do not compensate the display brightness of current region；
Step S43, if the average brightness of the current region present frame is greater than the first predetermined luminance threshold value, by institute
The first predetermined luminance threshold value is stated to be shown as the display brightness of current region.
In the present embodiment, if it is determined that duration or lasting frame number are more than or equal to preset duration or default frame
Number, then obtain the region average brightness of current region in preset duration or default frame number, and judge that the region average brightness is
It is no to be greater than the first predetermined luminance threshold value.
If the region average brightness is less than or equal to the first predetermined luminance threshold value, the flat of current region present frame is judged
Whether equal brightness is less than or equal to the first predetermined luminance threshold value, if the average brightness of current region present frame be less than or
Equal to the first predetermined luminance threshold value, then the display brightness of current region is not compensated；If current region present frame is averaged
Brightness is greater than the first predetermined luminance threshold value, then shows using the first predetermined luminance threshold value as the display brightness of current region
Show.
Further, after above-mentioned steps S3 further include:
Step S31, if the duration or continuing frame number and being less than preset duration or default frame number, not to working as proparea
The display brightness in domain compensates.
If absolute value is less than the first preset difference value threshold value and is greater than the second preset difference value threshold value, judge absolute value less than the
The duration of one preset difference value threshold value continues whether frame number is more than or equal to preset duration or default frame number, if continuing
Duration continues frame number less than preset duration or default frame number, then does not compensate to the display brightness of current region.
The technical solution proposed through the embodiment of the present invention, solving OLED TV in the prior art is by picture in screen
Element compensates, while television master chip can carry out the mobile processing of pixel to signal pattern in broadcasting pictures, residual to reduce
Probability that shadow occurs or by making to enter screen saver mode (the different picture of carousel or advertisement) without operation or interface without information source,
It prevents tableaux from television occur, the appearance of ghost is avoided with this.And the pixel of television is mobile also only limited
The movement of pixel is carried out in range, shift position is limited, does not work for playing the biggish picture of color lump in image, longer
Time stops or can generate ghost.Some pictures are fluctuated with the dynamic menus such as little TV play or variety show, in picture
Only the fluctuation of some image is larger, but rest part variation is smaller, but cannot treat as still picture, plays for a long time this
Film source still has very maximum probability to generate ghost.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the terminal that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or terminal institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or terminal.
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can be realized by means of software and necessary general hardware platform, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical solution of the present invention substantially in other words does the prior art
The part contributed out can be embodied in the form of software products, which is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disk, CD), including some instructions are used so that terminal device (it can be mobile phone,
Computer, server, air conditioner or network equipment etc.) execute method described in each embodiment of the present invention.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of display screen guard method, which is characterized in that the display screen guard method is applied to television terminal, the TV
The display screen of terminal is provided with multiple regions, the display screen guard method the following steps are included:
Calculate the absolute value of the difference of the average brightness of current region present frame and the average brightness of current region previous frame；
Judge the absolute value whether less than the first preset difference value threshold value and greater than the second preset difference value threshold value；
If the absolute value is less than the first preset difference value threshold value and is greater than the second preset difference value threshold value, judge that the absolute value is small
Whether correspond in the duration of the first preset difference value threshold value or lasting frame number more than or equal to preset duration or default frame
Number；
If duration or lasting frame number are corresponding more than or equal to preset duration or default frame number, when obtaining described default
The region average brightness of current region in the long or described default frame number, and judge whether the region average brightness is greater than first
Predetermined luminance threshold value；
If the region average brightness is greater than the first predetermined luminance threshold value, the region average brightness and predesigned compensation value are calculated
Difference, and the region average brightness and the difference of predesigned compensation value are shown as the display brightness of current region.
2. display screen guard method as described in claim 1, which is characterized in that if the duration or lasting frame number are corresponding
More than or equal to preset duration, perhaps default frame number then obtains current region in the preset duration or the default frame number
Region average brightness, and judge also wrap after the step of whether the region average brightness is greater than the first predetermined luminance threshold value
It includes:
If the region average brightness is less than or equal to the first predetermined luminance threshold value, being averaged for current region present frame is judged
Whether brightness is less than or equal to the first predetermined luminance threshold value；
If the average brightness of the current region present frame is less than or equal to the first predetermined luminance threshold value, not to current
The display brightness in region compensates；
If the average brightness of the current region present frame is greater than the first predetermined luminance threshold value, described first is preset bright
Degree threshold value is shown as the display brightness of current region.
3. display screen guard method as described in claim 1, which is characterized in that described to judge the absolute value whether less than
One preset difference value threshold value and be greater than the second preset difference value threshold value the step of after further include:
If the absolute value is more than or equal to the first preset difference value threshold value, the display brightness of current region is not mended
It repays.
4. display screen guard method as described in claim 1, which is characterized in that described to judge the absolute value whether less than
One preset difference value threshold value and be greater than the second preset difference value threshold value the step of after further include:
If the absolute value is less than or equal to the second preset difference value threshold value, judge that the absolute value is less than or equal to second
The duration of preset difference value threshold value continues whether frame number corresponds to more than or equal to preset duration or default frame number；
If duration or lasting frame number are corresponding more than or equal to preset duration or default frame number, when obtaining described default
The region average brightness of current region in the long or described default frame number, and judge whether the region average brightness is greater than second
Predetermined luminance threshold value；
If the region average brightness is greater than the second predetermined luminance threshold value, the region average brightness and predesigned compensation value are calculated
Difference, and the region average brightness and the difference of predesigned compensation value are shown as the display brightness of current region.
5. display screen guard method as claimed in claim 4, which is characterized in that if the duration or lasting frame number are corresponding
More than or equal to preset duration, perhaps default frame number then obtains current region in the preset duration or the default frame number
Region average brightness, and judge also wrap after the step of whether the region average brightness is greater than the second predetermined luminance threshold value
It includes:
If the region average brightness is less than or equal to the second predetermined luminance threshold value, being averaged for current region present frame is judged
Whether brightness is less than or equal to the second predetermined luminance threshold value；
If the average brightness of the current region present frame is less than or equal to the second predetermined luminance threshold value, not to current
The display brightness in region compensates；
If the average brightness of the current region present frame is greater than the second predetermined luminance threshold value, described second is preset bright
Degree threshold value is shown as the display brightness of current region.
6. display screen guard method as claimed in claim 4, which is characterized in that if the absolute value is less than or equal to
Second preset difference value threshold value then judges that the absolute value is less than or equal to the duration of the second preset difference value threshold value or continues
Whether frame number was more than or equal to after the step of preset duration or default frame number further include:
If the duration continues frame number less than preset duration or default frame number, not to the display brightness of current region
It compensates.
7. display screen guard method as described in claim 1, which is characterized in that if the absolute value is default less than first
Difference threshold and be greater than the second preset difference value threshold value, then judge duration of the absolute value less than the first preset difference value threshold value
Or after continuing frame number the step of whether corresponding to more than or equal to preset duration or default frame number further include:
If the duration continues frame number less than preset duration or default frame number, not to the display brightness of current region
It compensates.
8. a kind of television terminal, which is characterized in that the television terminal includes:
Computing module, for calculating the difference of the average brightness of current region present frame and the average brightness of current region previous frame
Absolute value；
Judgment module, for judging the absolute value whether less than the first preset difference value threshold value and greater than the second preset difference value threshold
Value；
First obtains module, if less than the first preset difference value threshold value and being greater than the second preset difference value threshold value for the absolute value,
Then judge whether duration of the absolute value less than the first preset difference value threshold value or lasting frame number correspond to and be more than or equal to
Preset duration or default frame number；
Second obtains module, if being more than or equal to preset duration or default frame number for stating duration or continuing frame number,
The region average brightness for then obtaining current region in preset duration or default frame number judges whether the region average brightness is big
In the first predetermined luminance threshold value；
It is average bright to calculate the region if being greater than the first predetermined luminance threshold value for the region average brightness for compensating module
The difference of degree and predesigned compensation value, and using the difference of the region average brightness and predesigned compensation value as the display of current region
Brightness is shown.
9. a kind of display screen protects system, which is characterized in that the display screen protection system includes: memory, processor and deposits
The display screen protective program that can be run on the memory and on the processor is stored up, the display screen protective program is by institute
State the step of realizing the display screen guard method as described in any one of claims 1 to 7 when processor executes.
10. a kind of storage medium, which is characterized in that be stored with display screen protective program, the display screen on the storage medium
The step of display screen guard method as described in any one of claims 1 to 7 is realized when protective program is executed by processor.
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| CN201811566458.8A CN109743518B (en) | 2018-12-19 | 2018-12-19 | Display screen protection method, television terminal, system and storage medium |
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| CN111432257A (en) * | 2020-03-26 | 2020-07-17 | 海信视像科技股份有限公司 | Method for starting screen protection of display equipment and display equipment |
| CN111429840A (en) * | 2020-03-16 | 2020-07-17 | 上海顺久电子科技有限公司 | Display device and brightness adjusting method thereof |
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