CN102314848A - Backlight-control method and system for liquid-crystal display device - Google Patents
Backlight-control method and system for liquid-crystal display device Download PDFInfo
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Abstract
The invention discloses a backlight-control method for a liquid-crystal display device, which comprises the following steps of: receiving viewing-environment information detected by an environment-detecting device, and obtaining an image-quality coefficient corresponding to the viewing-environment information according to the corresponding relation of preset image quality and the viewing-environment information; searching a backlight-control parameter corresponding to the image-quality coefficient according to the image-quality coefficient and the corresponding relation of a preset backlight-control parameter and the image-quality coefficient; and processing the searched backlight-control parameter, and outputting the processed image data to a backlight module of the liquid-crystal display device for backlight control. The invention also provides a corresponding system. In the backlight-control method and system for the liquid-crystal display device provided by the invention, the backlight of the liquid-crystal display device is controlled by a dynamic method, so that the energy-efficiency index of the liquid-crystal display device is further enhanced, and meanwhile, the requirements of different users for the image quality can be met in a pointed way.
Description
Technical field
The present invention relates to TV technology, specially refer to a kind of liquid crystal indicator method for controlling backlight thereof and system.
Background technology
Along with the enhancing of consumer's energy-conserving and environment-protective consciousness, the efficiency index of electric equipment products also more and more receives consumer's attention.In order to improve the efficiency index of liquid crystal indicator, begun on liquid crystal indicator, to use some dynamic backlight control technologys, can carry out different disposal to the different brightness of picture signal.Present employed adjustment method backlight is the distribution character according to GTG in the picture signal; The separation in setting threshold or ash stage; Under the requirement of certain picture quality; Carry out different compression or expansion to being in the threshold value front and back or the image in different ash stages, correspondingly adjust backlight illumination simultaneously, to reach the purpose that in energy-conservation, improves picture contrast.But; Adopt this method; Because the backlight control parameter that the separation in threshold value or ash stage is formed is the fixed value of being set in advance by system; Thereby can not watch the image of environment, different quality and variation flexibly automatically with different consumers, difference, and so just limited the further raising of efficiency index, also lack simultaneously and satisfies the demand of user targetedly picture quality.
Summary of the invention
Fundamental purpose of the present invention is for providing a kind of liquid crystal indicator method for controlling backlight thereof and system; Through dynamic method the backlight of liquid crystal indicator controlled; Make the efficiency index of liquid crystal indicator be able to further lifting, can satisfy the demand of different user pointedly simultaneously picture quality.
For realizing above-mentioned purpose, the present invention provides a kind of liquid crystal indicator method for controlling backlight thereof, comprising:
The detected environmental information of watching of reception environment pick-up unit, and according to preset picture quality with watch the corresponding relation of environmental information, obtain the said pairing picture quality coefficient of environmental information of watching;
According to said picture quality coefficient, and, find the pairing backlight control parameter of said picture quality coefficient through the preset backlight control parameter and the corresponding relation of picture quality coefficient;
The backlight control parameter that finds is handled, and the module backlight that the view data after will handling exports liquid crystal indicator to is to carry out backlight control.
Preferably, saidly watch environmental information to comprise watching ambient brightness value, watch age of user value and playing image form.
Preferably, the preset picture quality of said basis with watch the corresponding relation of environmental information, obtain the said pairing picture quality coefficient of environmental information of watching and comprise:
According to the said ambient brightness value of watching, obtain the first picture quality coefficient the corresponding relation of ambient brightness with watching from picture quality;
According to the said age of user value of watching, obtain the second picture quality coefficient the corresponding relation of age of user with watching from picture quality;
According to said image broadcast format, from the corresponding relation of picture quality and image broadcast format, obtain the 3rd picture quality coefficient.
Preferably, said picture quality coefficient is obtained by the first picture quality coefficient, the second picture quality coefficient and the 3rd picture quality multiplication.
The present invention also provides a kind of liquid crystal indicator backlight control system, and this system comprises environmental detection set and control device, and wherein, said environmental detection set is used for detecting watches environmental information, and said control device comprises:
Acquisition module is used for the detected environmental information of watching of reception environment pick-up unit, and according to preset picture quality coefficient with watch the corresponding relation of environmental information, obtain the said pairing picture quality coefficient of environmental information of watching;
Search module, be used for, and, find the pairing backlight control parameter of said picture quality coefficient through the preset backlight control parameter and the corresponding relation of picture quality coefficient according to said picture quality coefficient;
Output module is used for the backlight control parameter that finds is handled, and the module backlight that the view data after will handling exports liquid crystal indicator to is to carry out backlight control.
Preferably, said environmental detection set comprises:
Watch the ambient brightness detection module, be used to detect the extraneous ambient brightness value of watching, and will watch ambient brightness value to be sent to control device;
Watch the age of user detection module, be used to detect the current age of user value of watching, and will watch the age of user value to be sent to control device;
Playing image format detection module is used to detect the current images broadcast format, and the image broadcast format is sent to control device.
Preferably, the liquid crystal indicator backlight control system also comprises first memory storage that is used for the memory image quality and watches the environmental information corresponding relation, and this device comprises:
First memory module is used for memory image quality and the corresponding relation of watching ambient brightness, and obtains the said pairing first picture quality coefficient of ambient brightness value of watching according to this corresponding relation;
Second memory module is used for memory image quality and the corresponding relation of watching age of user, and obtains the said pairing second picture quality coefficient of age of user value of watching according to this corresponding relation;
The 3rd memory module is used for the corresponding relation of memory image quality and image broadcast format, and obtains pairing the 3rd picture quality coefficient of said image broadcast format according to this corresponding relation.
Preferably, the Adjustment System of liquid crystal indicator backlight control parameter also comprises second memory storage that is used to store backlight control parameter and picture quality coefficient corresponding relation.
Preferably, said control device also comprises:
Computing module is used for the said first picture quality coefficient, the second picture quality coefficient and the 3rd picture quality multiplication, to obtain the picture quality coefficient.
Liquid crystal indicator method for controlling backlight thereof provided by the present invention; Through detecting the environmental information of watching in the residing environment of the current user of watching; After receiving that environmental detection set is detected and watching environmental information; At first according to preset picture quality with watch the corresponding relation of environmental information, obtain and watch the pairing picture quality coefficient of environmental information, in the corresponding relation of preset backlight control parameter and picture quality coefficient, find the pairing backlight control parameter of this picture quality coefficient according to the picture quality coefficient again; And the backlight control parameter handled; And export treated view data the module backlight of liquid crystal indicator to, and carry out backlight control through module backlight, so just accomplished dynamic setting to the present image quality.The method backlight of this dynamic control liquid crystal indicator; Can satisfy in difference watches under the environment different beholders to the demand of liquid crystal indicator playing image quality; Make the efficiency index of liquid crystal indicator be able to further lifting, can satisfy the demand of different user pointedly simultaneously picture quality.
Description of drawings
Fig. 1 is the schematic flow sheet of liquid crystal indicator method for controlling backlight thereof embodiment of the present invention;
Fig. 2 obtains the schematic flow sheet of watching environmental information among the liquid crystal indicator method for controlling backlight thereof embodiment of the present invention;
Fig. 3 is for picture quality among Fig. 2 and watch the pairing curve of piecewise function of ambient brightness value;
Fig. 4 is the pairing curve of piecewise function of picture quality and age of user value among Fig. 2;
Fig. 5 is the pairing curve of piecewise function of picture quality and image broadcast format among Fig. 2;
Fig. 6 is the structural representation of liquid crystal indicator backlight control system of the present invention;
Fig. 7 is the structural representation of control device in the liquid crystal indicator backlight control system of the present invention;
Fig. 8 is the structural representation of environmental detection set in the liquid crystal indicator backlight control system of the present invention;
Fig. 9 is the structural representation of first memory storage in the liquid crystal indicator backlight control system of the present invention.
The realization of the object of the invention, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
With reference to Fig. 1, Fig. 1 is the schematic flow sheet of liquid crystal indicator method for controlling backlight thereof embodiment of the present invention.
In the present embodiment, the liquid crystal indicator method for controlling backlight thereof comprises:
Step S101, the detected environmental information of watching of reception environment pick-up unit, and according to preset picture quality with watch the corresponding relation of environmental information, obtain the said pairing picture quality coefficient of environmental information of watching;
When the user is in when watching the image that TV or liquid crystal indicator play in the specific external environment; Just can detect the environmental information of watching of external environment that this user belonged at that time through environmental detection set, detectedly watch environmental information to comprise watching ambient brightness value, watch age of user value and playing image form.Receive in the detected external environment of environmental detection set watch environmental information after; Just begin the preset picture quality of basis and watch the corresponding relation of environmental information; Obtain and watch the pairing picture quality coefficient of environmental information, resulting this picture quality coefficient to be the current needed picture quality coefficient of image that liquid crystal indicator is play in the environment of watching.In the present embodiment; Picture quality and the corresponding relation of watching environmental information can be for according to different watching ambient brightness value, watching age of user value and playing image form to distinguish predefined piecewise function; After different watching ambient brightness value when receiving, watching age of user value and playing image form; Just can be according to predefined piecewise function, and confirm to watch ambient brightness value respectively, watch age of user value and the pairing picture quality coefficient of playing image form.
Step S102 according to said picture quality coefficient, and through the preset backlight control parameter and the corresponding relation of picture quality coefficient, finds the pairing backlight control parameter of said picture quality coefficient;
After obtaining to watch the pairing picture quality coefficient of environmental information according to preset picture quality and the corresponding relation of watching environmental information; Can in the corresponding relation of preset backlight control parameter and picture quality coefficient, search, to confirm the pairing backlight control parameter of this picture quality coefficient.In the present embodiment, the backlight control parameter of being mentioned can be the pairing pixel quantity of the GTG that is in different phase in the picture signal, and it is big more that the value of this pixel quantity is set; Representative is many more to the GTG of compression of images, and promptly image impairment is big more, so just makes the efficiency index high more; Otherwise; It is more little that the value of pixel quantity is set, and image impairment is more little, and promptly the efficiency index is more little.Backlight control parameter and picture quality coefficient can be for concerning one to one; Can this correspondence setting be become the form of correspondence table; The pairing backlight control parameter of little picture quality coefficient is bigger; The efficiency index correspondingly can be higher, and the pairing backlight control parameter of big picture quality coefficient is then less, and the efficiency index correspondingly can be lower.Therefore, after obtaining the picture quality coefficient, just can be according to the one-to-one relationship of backlight control parameter and picture quality coefficient, in correspondence table, find this picture quality coefficient the backlight control parameter of unique correspondence.
Step S103 handles the backlight control parameter that finds, and the module backlight that the view data after will handling exports liquid crystal indicator to is to carry out backlight control.
When in the correspondence table of backlight control parameter and picture quality coefficient, find current watch the pairing backlight control parameter of environmental information after; Just according to the numerical value of the backlight control parameter that finds; Compare one by one with the pairing pixel quantity of the GTG of picture signal; To finding pixel quantity and the immediate GTG value of this backlight control parameter, then the grey exponent part of pixel quantity greater than this backlight control parameter compressed, simultaneously; Need backlight illumination correspondingly be reduced according to the coefficient of compression GTG; To the desired brightness value of the numerical value that satisfies this backlight control parameter, export this brightness value to module backlight to control then to backlight, make and can show through the liquid crystal indicator picture quality that the active user is required; This has just accomplished according to the current environment of watching, and its needed picture quality is set dynamically.When pixel quantity being compressed greater than its grey exponent part according to this backlight control parameter, many more to the GTG compression of image, then the demand to backlight illumination is also low more, and this just can make the efficiency index of liquid crystal indicator higher; Otherwise, few more as to the compression of the GTG of image, then the demand to backlight illumination is also high more, just the efficiency index of liquid crystal indicator is reduced.
The liquid crystal indicator method for controlling backlight thereof that the embodiment of the invention provided; Through detecting the environmental information of watching in the residing environment of the current user of watching; After receiving that environmental detection set is detected and watching environmental information; At first according to preset picture quality with watch the corresponding relation of environmental information, obtain and watch the pairing picture quality coefficient of environmental information, in the corresponding relation of preset backlight control parameter and picture quality coefficient, find the pairing backlight control parameter of this picture quality coefficient according to the picture quality coefficient again; And the backlight control parameter handled; And export treated view data the module backlight of liquid crystal indicator to, and carry out backlight control through module backlight, so just accomplished dynamic setting to the present image quality.The method backlight of this dynamic control liquid crystal indicator; Can satisfy in difference watches under the environment different beholders to the demand of liquid crystal indicator playing image quality; Make the efficiency index of liquid crystal indicator be able to further lifting, can satisfy the demand of different user pointedly simultaneously picture quality.
With reference to Fig. 2, Fig. 2 obtains the schematic flow sheet of watching environmental information among the liquid-crystal apparatus method for controlling backlight thereof embodiment of the present invention.
In the present embodiment, step S101 specifically comprises:
Step S1011 according to the said ambient brightness value of watching, obtains the first picture quality coefficient from picture quality with watching the corresponding relation of ambient brightness;
In the present embodiment, watch environmental information to comprise and watch ambient brightness value, watch age of user value and playing image form, detect respectively by environmental detection set.And picture quality with watch storing in the corresponding relation of environmental information picture quality respectively with watch ambient brightness value, watch the corresponding relation of age of user value and playing image form.
With reference to Fig. 3, Fig. 3 is for picture quality among Fig. 2 and watch the pairing curve of piecewise function of ambient brightness value.
When receive from environmental detection set detected watch ambient brightness value after, just can access picture quality and watch the pairing piecewise function of ambient brightness value, this piecewise function can for:
Wherein, variable X is for watching ambient brightness value, and L1 and L2 are the fragmentation value of watching ambient brightness, and L1 generally can get 1-10nit, and L2 generally can get 50-80nit; What b1, b2 and b3 were respectively different phase watches the pairing picture quality coefficient of ambient brightness, sets 0.5≤b1＜b3＜b2=1 usually.According to the detected ambient brightness value of watching of received environmental detection set, can in this piecewise function, obtain this and watch the pairing first picture quality COEFFICIENT K 1 of ambient brightness value through corresponding relation.
Step S1012 according to the said age of user value of watching, obtains the second picture quality coefficient from picture quality with watching the corresponding relation of age of user;
With reference to Fig. 4, Fig. 4 is the pairing curve of piecewise function of picture quality and age of user value among Fig. 2.
Receive from the detected age of user value of watching of environmental detection set, just can access picture quality and watch the pairing piecewise function of age of user value, this piecewise function can for:
Wherein, variable X is for watching the age of user value, and Y1 and Y2 are the fragmentation value of watching age of user, and Y1 generally can get 10-16 year, and Y2 generally can get 50-60 year; A1, a2 and a3 are respectively the different pairing picture quality coefficients of age of user section of watching, and set 0.5≤a1＜a3＜a2=1 usually.According to the detected age of user value of watching of received environmental detection set, can in this piecewise function, obtain this and watch the pairing second picture quality COEFFICIENT K 2 of age of user value through corresponding relation.
Step S1013 according to said image broadcast format, obtains the 3rd picture quality coefficient from the corresponding relation of picture quality and image broadcast format.
With reference to Fig. 5, Fig. 5 is the pairing curve of piecewise function of picture quality and image broadcast format among Fig. 2.
Receive the image broadcast format from the detected present image of environmental detection set, the image quality parametric analysis system just can access picture quality and the pairing piecewise function of image broadcast format, this piecewise function can for:
Wherein, variable X is the image broadcast format, and c1, c2, c3 and c4 are respectively the pairing picture quality coefficient of pictures different broadcast format, set 0.5≤c1＜c2＜c3＜c4=1 usually.In the present embodiment, the image broadcast format can be high definition, SD and motion, static four kinds of various combinations.According to the detected image broadcast format of received environmental detection set, can in this piecewise function, obtain pairing the 3rd picture quality COEFFICIENT K 3 of this image broadcast format through corresponding relation.
In the above-described embodiments, the picture quality coefficient is obtained by the first picture quality coefficient, the second picture quality coefficient and the 3rd picture quality multiplication.
Through received from the detected respective function of watching environmental information and picture quality of environmental detection set; After obtaining watching ambient brightness, watching age of user value and playing image form to distinguish the corresponding first picture quality COEFFICIENT K 1, the second picture quality COEFFICIENT K 2 and the 3rd picture quality COEFFICIENT K 3; Just can obtain watching the residing current needed picture quality COEFFICIENT K of environment of watching of user through certain relational calculus; In the present embodiment; This picture quality COEFFICIENT K can obtain through this picture quality COEFFICIENT K 1, K2 and K3 are multiplied each other, i.e. K=K1 * K2 * K3.
With watching ambient brightness, watching the corresponding relation of age of user value and playing image form and picture quality to store with the form of piecewise function respectively; After receiving that EMS is detected and watching environmental information; Through watching ambient brightness, watching age of user value and playing image form pairing piecewise function respectively, just can correspondingly obtain the first picture quality COEFFICIENT K 1, the second picture quality COEFFICIENT K 2 and the 3rd picture quality COEFFICIENT K 3.Then, the product through K1, K2 and K3 can obtain the current needed picture quality COEFFICIENT K of environment of watching.Like this; Just can obtain being in the picture quality coefficient under the different demands according to the different different broadcast formats of watching brightness, the residing all ages and classes section of user self and the current image of playing in user's present located environment, thereby be that backlight dynamically setting of realizing liquid crystal indicator provides the foundation.
With reference to Fig. 6 and Fig. 7, Fig. 6 is the structural representation of liquid crystal indicator backlight control system of the present invention, and Fig. 7 is the structural representation of control device in the liquid crystal indicator backlight control system of the present invention.
In the present embodiment, the liquid crystal indicator backlight control system comprises control device 10 and environmental detection set 20, and wherein, control device 10 comprises:
When the user is in when watching the image that TV or liquid crystal indicator play in the specific external environment; Just can detect the environmental information of watching of external environment that the user belonged at that time through environmental detection set 20, detectedly watch environmental information to comprise watching ambient brightness value, watch age of user value and playing image form.After receiving that environmental detection set 20 is detected and watching environmental information; Acquisition module 11 just begins according to preset picture quality and watches the corresponding relation of environmental information; Obtain and watch the pairing picture quality coefficient of environmental information, resulting this picture quality coefficient to be the current needed picture quality coefficient of image that liquid crystal indicator is play in the environment of watching.In the present embodiment; Picture quality and the corresponding relation of watching environmental information can be for according to different watching ambient brightness value, watching age of user value and playing image form to distinguish predefined piecewise function; After different watching ambient brightness value when receiving, watching age of user value and playing image form; Just can be according to predefined piecewise function, and confirm to watch ambient brightness value respectively, watch age of user value and the pairing picture quality coefficient of playing image form.
After obtaining to watch the pairing picture quality coefficient of environmental information according to preset picture quality and the corresponding relation of watching environmental information; Searching module 12 can search in the corresponding relation of preset backlight control parameter and picture quality coefficient, to confirm the pairing backlight control parameter of this picture quality coefficient.In the present embodiment, the backlight control parameter of being mentioned can be the pairing pixel quantity of the GTG that is in different phase in the picture signal, and it is big more that the value of this pixel quantity is set; Representative is many more to the GTG of compression of images, and promptly image impairment is big more, so just makes the efficiency index high more; Otherwise; It is more little that the value of pixel quantity is set, and image impairment is more little, and promptly the efficiency index is more little.Backlight control parameter and picture quality coefficient can be for concerning one to one; Can this correspondence setting be become the form of correspondence table; The pairing backlight control parameter of little picture quality coefficient is bigger; The efficiency index correspondingly can be higher, and the pairing backlight control parameter of big picture quality coefficient is then less, and the efficiency index correspondingly can be lower.Therefore, after obtaining the picture quality coefficient, just can be according to the one-to-one relationship of backlight control parameter and picture quality coefficient, in correspondence table, find this picture quality coefficient the backlight control parameter of unique correspondence.
In the present embodiment; Second memory storage 40 is set; Be used for storing the correspondence table of backlight control parameter and picture quality coefficient; Like this, when needs are searched its pairing backlight control parameter according to resulting picture quality coefficient, just can in this correspondence table, confirm one by one the current picture quality coefficient of receiving the backlight control parameter of unique correspondence.
When in the correspondence table of backlight control parameter and picture quality coefficient, find current watch the pairing backlight control parameter of environmental information after; Just according to the numerical value of the backlight control parameter that finds; Compare one by one with the pairing pixel quantity of the GTG of picture signal; To finding pixel quantity and the immediate GTG value of this backlight control parameter, then the grey exponent part of pixel quantity greater than this backlight control parameter compressed, simultaneously; Need backlight illumination correspondingly be reduced according to the coefficient of compression GTG; To the desired brightness value of the numerical value that satisfies this backlight control parameter, output module 13 exports this brightness value to module backlight to control backlight then, makes and can show through the liquid crystal indicator picture quality that the active user is required; This has just accomplished according to the current environment of watching, and its needed picture quality is set dynamically.When pixel quantity being compressed greater than its grey exponent part according to this backlight control parameter, many more to the GTG compression of image, then the demand to backlight illumination is also low more, and this just can make the efficiency index of liquid crystal indicator higher; Otherwise, few more as to the compression of the GTG of image, then the demand to backlight illumination is also high more, just the efficiency index of liquid crystal indicator is reduced.
The liquid crystal indicator backlight control system that the embodiment of the invention provided; Through detecting the environmental information of watching in the residing environment of the current user of watching; After receiving that environmental detection set is detected and watching environmental information; At first according to preset picture quality with watch the corresponding relation of environmental information, obtain and watch the pairing picture quality coefficient of environmental information, in the corresponding relation of preset backlight control parameter and picture quality coefficient, find the pairing backlight control parameter of this picture quality coefficient according to the picture quality coefficient again; And the backlight control parameter handled; And export treated view data the module backlight of liquid crystal indicator to, and carry out backlight control through module backlight, so just accomplished dynamic setting to the present image quality.The method backlight of this dynamic control liquid crystal indicator; Can satisfy in difference watches under the environment different beholders to the demand of liquid crystal indicator playing image quality; Make the efficiency index of liquid crystal indicator be able to further lifting, can satisfy the demand of different user pointedly simultaneously picture quality.
With reference to Fig. 8, Fig. 8 is the structural representation of environmental detection set in the liquid crystal indicator backlight control system of the present invention.
In the present embodiment, environmental detection set 20 comprises:
Watch ambient brightness detection module 21, be used to detect the extraneous ambient brightness value of watching, and will watch ambient brightness value to be sent to control device 10;
Watch age of user detection module 22, be used to detect the current age of user value of watching, and will watch the age of user value to be sent to control device;
Playing image format detection module 23 is used to detect the current images broadcast format, and the image broadcast format is sent to control device.
Environmental detection set 20 is detected to be watched environmental information to comprise watching ambient brightness value, watch age of user value and playing image form.In environmental detection set 20, be provided with and watch ambient brightness detection module 21, watch age of user detection module 22 and playing image format detection module 23; Wherein, Watch ambient brightness detection module 21 can adopt light checkout equipment detection TV or liquid crystal indicator surround lighting on every side to confirm the brightness of environment; Age of user detection module 22 can adopt has taking pictures or video recording equipment of face identification functions, and playing image format detection module 23 can be analyzed to confirm the module of picture format the content of playing image for being arranged on inner being used for of TV or liquid crystal indicator.Be provided with in the environmental detection set 20 and watch ambient brightness detection module 21, watch age of user detection module 22 and playing image format detection module 23; Can be used for respectively detecting that the current user of watching is residing watches watching ambient brightness value, watch age of user value and playing image form in the environment; And respectively detected these three kinds of information are sent to control device 10; Through control device 10 picture quality with watch in the respective function of environmental information, find and watch ambient brightness value, watch these three kinds of information of age of user value and playing image form distinguish the correspondence the picture quality coefficient.
Through setly in the environmental detection set 20 watching ambient brightness detection module 21, watching age of user detection module 22 and playing image format detection module 23; Can detect easily and currently watch watching ambient brightness value, watch age of user value and playing image form in the environment, and be sent to control device 10 and carry out searching of picture quality coefficient.This just can further guarantee to be directed against different user to the different demands of picture quality, and the backlight of liquid crystal indicator controlled dynamically.
With reference to Fig. 9, Fig. 9 is the structural representation of first memory storage in the liquid crystal indicator backlight control system of the present invention.
In the present embodiment, the Adjustment System of liquid crystal indicator backlight control parameter also comprise be used for the memory image quality with watch first memory storage, 30, the first memory storages 30 of environmental information corresponding relation to comprise:
The 3rd memory module 33 is used for the corresponding relation of memory image quality and image broadcast format, and obtains pairing the 3rd picture quality coefficient of said image broadcast format according to this corresponding relation.
Watch environmental information to comprise and watch ambient brightness value, watch age of user value and playing image form, detect respectively by environmental detection set 20.And picture quality with watch storing in the corresponding relation of environmental information picture quality respectively with watch ambient brightness value, watch the corresponding relation of age of user value and playing image form.
With reference to Fig. 3, Fig. 3 is for picture quality among Fig. 2 and watch the pairing curve of piecewise function of ambient brightness value.
When receive from environmental detection set 20 detected watch ambient brightness value after, just can in first memory module 31, access picture quality and watch the pairing piecewise function of ambient brightness value, this piecewise function can for:
Wherein, variable X is for watching ambient brightness value, and L1 and L2 are the fragmentation value of watching ambient brightness, and L1 generally can get 1-10nit, and L2 generally can get 50-80nit; What b1, b2 and b3 were respectively different phase watches the pairing picture quality coefficient of ambient brightness, 0.5≤b1＜b3＜b2=1.According to the received environmental detection set 20 detected ambient brightness value of watching, can in this piecewise function, obtain this and watch the pairing first picture quality COEFFICIENT K 1 of ambient brightness value through corresponding relation.
With reference to Fig. 4, Fig. 4 is the pairing curve of piecewise function of picture quality and age of user value among Fig. 2.
Receive from the environmental detection set 20 detected age of user values of watching, just can from second memory module 32, access picture quality and watch the pairing piecewise function of age of user value, this piecewise function can for:
Wherein, variable X is for watching the age of user value, and Y1 and Y2 are the fragmentation value of watching age of user, and Y1 generally can get 10-16 year, and Y2 generally can get 50-60 year; A1, a2 and a3 are respectively the different pairing picture quality coefficient of age of user section, the 0.5≤a1＜a3＜a2=1 of watching.According to the detected age of user value of watching of received environmental detection set, can in this piecewise function, obtain this and watch the pairing second picture quality COEFFICIENT K 2 of age of user value through corresponding relation.
With reference to Fig. 5, Fig. 5 is the pairing curve of piecewise function of picture quality and image broadcast format among Fig. 2.
Receive image broadcast format, just can from the 3rd memory module 33, access picture quality and the pairing piecewise function of image broadcast format from environmental detection set 20 detected present images, this piecewise function can for:
Wherein, variable X is the image broadcast format, and c1, c2, c3 and c4 are respectively the pairing picture quality coefficient of pictures different broadcast format, 0.5≤c1＜c2＜c3＜c4=1.In the present embodiment, the image broadcast format can be high definition, SD and motion, static four kinds of various combinations.According to the detected image broadcast format of received environmental detection set, can in this piecewise function, obtain pairing the 3rd picture quality COEFFICIENT K 3 of this image broadcast format through corresponding relation.
In the above-described embodiments, control device 10 also comprises:
Through received from the detected respective function of watching environmental information and picture quality of environmental detection set; After obtaining watching ambient brightness, watching age of user value and playing image form to distinguish the corresponding first picture quality COEFFICIENT K 1, the second picture quality COEFFICIENT K 2 and the 3rd picture quality COEFFICIENT K 3; Computing module 14 just can obtain watching the residing current needed picture quality COEFFICIENT K of environment of watching of user according to calculation mode; In the present embodiment; This picture quality COEFFICIENT K can obtain through this picture quality COEFFICIENT K 1, K2 and K3 are multiplied each other, i.e. K=K1 * K2 * K3.
With watching ambient brightness, watching the corresponding relation of age of user value and playing image form and picture quality to store with the form of piecewise function respectively; After receiving that EMS is detected and watching environmental information; Through watching ambient brightness, watching age of user value and playing image form pairing piecewise function respectively, just can correspondingly obtain the first picture quality COEFFICIENT K 1, the second picture quality COEFFICIENT K 2 and the 3rd picture quality COEFFICIENT K 3.Then, the product through K1, K2 and K3 can obtain the current needed picture quality COEFFICIENT K of environment of watching.Like this; Just can obtain being in the picture quality coefficient under the different demands according to the different different broadcast formats of watching brightness, the residing all ages and classes section of user self and the current image of playing in user's present located environment, thereby be that backlight dynamically setting of realizing liquid crystal indicator provides the foundation.
Liquid crystal indicator backlight control system of the present invention is watched ambient brightness value, is watched age of user value and image broadcast format through detection; Produce a picture quality coefficient respectively; Confirm needed dynamic backlight controlled variable according to resulting picture quality coefficient again; Make when the image quality requirement is high with image quality to paying the utmost attention to key element; To improve efficiency, reach the active balance of efficiency exponential sum image quality when image quality requires to hang down, satisfy the demand under the different scenes of different consumers for paying the utmost attention to key element.And the present invention obtains the active balance except making efficiency exponential sum image quality, can also reduce the request for utilization to the consumer simultaneously, and it is simpler that product is used.
The above is merely the preferred embodiments of the present invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes instructions of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (9)
1. a liquid crystal indicator method for controlling backlight thereof is characterized in that, comprising:
The detected environmental information of watching of reception environment pick-up unit, and according to preset picture quality with watch the corresponding relation of environmental information, obtain the said pairing picture quality coefficient of environmental information of watching;
According to said picture quality coefficient, and, find the pairing backlight control parameter of said picture quality coefficient through the preset backlight control parameter and the corresponding relation of picture quality coefficient;
The backlight control parameter that finds is handled, and the module backlight that the view data after will handling exports liquid crystal indicator to is to carry out backlight control.
2. liquid crystal indicator method for controlling backlight thereof as claimed in claim 1 is characterized in that, saidly watches environmental information to comprise watching ambient brightness value, watches age of user value and playing image form.
3. liquid crystal indicator method for controlling backlight thereof as claimed in claim 2 is characterized in that, the preset picture quality of said basis with watch the corresponding relation of environmental information, obtain the said pairing picture quality coefficient of environmental information of watching and comprise:
According to the said ambient brightness value of watching, obtain the first picture quality coefficient the corresponding relation of ambient brightness with watching from picture quality;
According to the said age of user value of watching, obtain the second picture quality coefficient the corresponding relation of age of user with watching from picture quality;
According to said image broadcast format, from the corresponding relation of picture quality and image broadcast format, obtain the 3rd picture quality coefficient.
4. liquid crystal indicator method for controlling backlight thereof as claimed in claim 3 is characterized in that, said picture quality coefficient is obtained by the first picture quality coefficient, the second picture quality coefficient and the 3rd picture quality multiplication.
5. a liquid crystal indicator backlight control system is characterized in that, this system comprises environmental detection set and control device, and wherein, said environmental detection set is used for detecting watches environmental information, and said control device comprises:
Acquisition module is used for the detected environmental information of watching of reception environment pick-up unit, and according to preset picture quality coefficient with watch the corresponding relation of environmental information, obtain the said pairing picture quality coefficient of environmental information of watching;
Search module, be used for, and, find the pairing backlight control parameter of said picture quality coefficient through the preset backlight control parameter and the corresponding relation of picture quality coefficient according to said picture quality coefficient;
Output module is used for the backlight control parameter that finds is handled, and the module backlight that the view data after will handling exports liquid crystal indicator to is to carry out backlight control.
6. liquid crystal indicator backlight control system as claimed in claim 5 is characterized in that, said environmental detection set comprises:
Watch the ambient brightness detection module, be used to detect the extraneous ambient brightness value of watching, and will watch ambient brightness value to be sent to control device;
Watch the age of user detection module, be used to detect the current age of user value of watching, and will watch the age of user value to be sent to control device;
Playing image format detection module is used to detect the current images broadcast format, and the image broadcast format is sent to control device.
7. liquid crystal indicator backlight control system as claimed in claim 5 is characterized in that, also comprises first memory storage that is used for the memory image quality and watches the environmental information corresponding relation, and this device comprises:
First memory module is used for memory image quality and the corresponding relation of watching ambient brightness, and obtains the said pairing first picture quality coefficient of ambient brightness value of watching according to this corresponding relation;
Second memory module is used for memory image quality and the corresponding relation of watching age of user, and obtains the said pairing second picture quality coefficient of age of user value of watching according to this corresponding relation;
The 3rd memory module is used for the corresponding relation of memory image quality and image broadcast format, and obtains pairing the 3rd picture quality coefficient of said image broadcast format according to this corresponding relation.
8. liquid crystal indicator backlight control system as claimed in claim 7 is characterized in that, also comprises second memory storage that is used to store backlight control parameter and picture quality coefficient corresponding relation.
9. liquid crystal indicator backlight control system as claimed in claim 8 is characterized in that, said control device also comprises:
Computing module is used for the said first picture quality coefficient, the second picture quality coefficient and the 3rd picture quality multiplication, to obtain the picture quality coefficient.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057171A (en) * | 2016-07-21 | 2016-10-26 | 广东欧珀移动通信有限公司 | Control method and device |
| CN110572596A (en) * | 2019-09-11 | 2019-12-13 | 深圳创维－Rgb电子有限公司 | television and backlight control method and device thereof and readable storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101133438A (en) * | 2005-03-01 | 2008-02-27 | 松下电器产业株式会社 | Electronic display medium and screen display control method used for electronic display medium |
| CN101484928A (en) * | 2006-05-23 | 2009-07-15 | 苹果公司 | Portable media device with power-managed display |
| CN101567171A (en) * | 2008-04-25 | 2009-10-28 | 深圳Tcl新技术有限公司 | Method and system for regulating backlight of liquid crystal display television |
| CN101689353A (en) * | 2008-05-08 | 2010-03-31 | 索尼公司 | Display control device, method, and program |
| WO2011033855A1 (en) * | 2009-09-15 | 2011-03-24 | ソニー株式会社 | Display device and control method |
-
2011
- 2011-09-09 CN CN201110267110A patent/CN102314848A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101133438A (en) * | 2005-03-01 | 2008-02-27 | 松下电器产业株式会社 | Electronic display medium and screen display control method used for electronic display medium |
| CN101484928A (en) * | 2006-05-23 | 2009-07-15 | 苹果公司 | Portable media device with power-managed display |
| CN101567171A (en) * | 2008-04-25 | 2009-10-28 | 深圳Tcl新技术有限公司 | Method and system for regulating backlight of liquid crystal display television |
| CN101689353A (en) * | 2008-05-08 | 2010-03-31 | 索尼公司 | Display control device, method, and program |
| WO2011033855A1 (en) * | 2009-09-15 | 2011-03-24 | ソニー株式会社 | Display device and control method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106057171A (en) * | 2016-07-21 | 2016-10-26 | 广东欧珀移动通信有限公司 | Control method and device |
| CN106057171B (en) * | 2016-07-21 | 2019-05-24 | Oppo广东移动通信有限公司 | Control method and control device |
| CN110572596A (en) * | 2019-09-11 | 2019-12-13 | 深圳创维－Rgb电子有限公司 | television and backlight control method and device thereof and readable storage medium |
| WO2021047379A1 (en) * | 2019-09-11 | 2021-03-18 | 深圳创维－Rgb电子有限公司 | Television and backlight control method therefor, control device, and readable storage medium |
| US11388363B2 (en) | 2019-09-11 | 2022-07-12 | Shenzhen Skyworth-Rgb Electronic Co., Ltd. | TV set and backlight control method, control device and readable storage medium of the TV set |
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Application publication date: 20120111 |