CN102290035B - Method and device for dynamically adjusting backlight of television screen, and television - Google Patents
Method and device for dynamically adjusting backlight of television screen, and television Download PDFInfo
- Publication number
- CN102290035B CN102290035B CN2011102179953A CN201110217995A CN102290035B CN 102290035 B CN102290035 B CN 102290035B CN 2011102179953 A CN2011102179953 A CN 2011102179953A CN 201110217995 A CN201110217995 A CN 201110217995A CN 102290035 B CN102290035 B CN 102290035B
- Authority
- CN
- China
- Prior art keywords
- image content
- present image
- brightness
- screen
- variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
The invention is applicable to the field of televisions and provides a method and a device for dynamically adjusting backlight of a television screen, and a television. The method comprises the following steps of: acquiring a luminance parameter of current image content, and calculating a luminance value of the current image content according to the luminance parameter of the current image content; acquiring a backlight parameter value of the television screen; and comparing the backlight parameter value of the television screen with the luminance value of the current image content, and dynamically adjusting the backlight parameter value of the television screen according to a comparison result. By the method and the device, the backlight parameter value of the television screen is dynamically adjusted according to the luminance value of the transmitted image content, the function of dynamically adjusting the backlight is realized, the dynamic contrast is improved, the picture quality of the image content is effectively improved, and the aims of energy conservation and environmental friendliness are fulfilled at the same time.
Description
Technical field
The invention belongs to field of television, relate in particular to a kind of backlight dynamical adjusting method, device and televisor of television screen.
Background technology
Develop rapidly along with whole TV industry, deepening continuously of national economy and consumption upgrading, energy saving, the concept of environmental protection also becomes more and more popular, consumer's consumption demand and consumption quality are also in continuous lifting, and people require also more and more higher to the image frame of TV and the dynamic adjustments backlight of television screen.
Existing backlight dynamical adjusting method is mainly according to the surround lighting that gathers, LCD or LED-backlit source to be carried out dynamic adjustments.The method is come the backlight of adjusting screen by gathering surround lighting, can not effectively improve image picture quality, has reduced user's good experience.
Summary of the invention
The invention provides a kind of backlight dynamical adjusting method of television screen, be intended to solve the not high and user of image picture quality that the backlight adjusting method of existing television screen exists and experience not good problem.
The present invention is achieved in that a kind of backlight dynamical adjusting method of television screen, and described method comprises the steps:
The set of variables backlight of predefine television screen, the set of variables backlight of described television screen comprise the first screen variable backlight, the second screen variable backlight, the 3rd screen variable backlight, the 4th screen variable backlight and the 5th screen variable backlight;
The brightness set of variables of predefine picture material, the brightness set of variables of described picture material comprise the first picture material brightness variable, the second picture material brightness variable, the 3rd picture material brightness variable, the 4th picture material brightness variable, the 5th picture material brightness variable, the 6th picture material brightness variable, the 7th picture material brightness variable, the 8th picture material brightness variable;
Obtain the luminance parameter of present image content, and calculate the brightness value of present image content according to the luminance parameter of described present image content;
Obtain the backlighting parameters value of television screen;
Relatively the backlighting parameters value of television screen and the brightness value of present image content, and according to the backlighting parameters value of the television screen of dynamic adjustments as a result of comparison;
The described luminance parameter that obtains the present image content, and be specially according to the step that the luminance parameter of described present image content calculates the brightness value of present image content:
Obtain the luminance parameter of present image content;
Determine the brightness value of the screen that the present image content is corresponding;
The brightness value of the screen corresponding according to the luminance parameter of present image content, default picture material brightness set of variables, default screen set of variables backlight and present image content calculates the brightness value of present image content;
Wherein, the brightness value of screen corresponding to described luminance parameter according to the present image content, default picture material brightness set of variables, default screen set of variables backlight and the present image content step that calculates the brightness value of present image content is specially:
At the luminance parameter of present image content during less than default the first picture material brightness variable, the brightness value of present image content equals brightness value poor of the first screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the second picture material brightness variable, the brightness value of present image content equals brightness value poor of the second screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the 3rd picture material brightness variable, the brightness value of present image content equals brightness value poor of the 3rd screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the 4th picture material brightness variable, the brightness value of present image content equals brightness value poor of the second screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the 5th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 5th screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the 6th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 6th screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the 7th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 7th screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the 8th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 8th screen variable backlight screen corresponding with the present image content.
Another object of the present invention is to provide a kind of dynamic adjustments device backlight of television screen, described device comprises:
Picture material brightness determining unit is used for obtaining the luminance parameter of present image content, and calculates the brightness value of present image content according to the luminance parameter of described present image content;
Screen backlighting parameters acquiring unit is for the backlighting parameters value of obtaining television screen;
Screen backlighting parameters regulon is used for relatively the backlighting parameters value and the brightness value of present image content of television screen, and according to the backlighting parameters value of the television screen of dynamic adjustments as a result of comparison;
Set of variables backlight is preset the unit, the set of variables backlight that is used for the predefine television screen, the set of variables backlight of described television screen comprise the first screen variable backlight, the second screen variable backlight, the 3rd screen variable backlight, the 4th screen variable backlight and the 5th screen variable backlight;
The brightness set of variables is preset the unit, be used for the brightness set of variables of predefine picture material, the brightness set of variables of described picture material comprises the first picture material brightness variable, the second picture material brightness variable, the 3rd picture material brightness variable, the 4th picture material brightness variable, the 5th picture material brightness variable, the 6th picture material brightness variable, the 7th picture material brightness variable, the 8th picture material brightness variable;
Described picture material brightness determining unit comprises:
The luminance parameter acquisition module is for the luminance parameter that obtains the present image content;
Screen brightness value determination module is for the brightness value of determining the screen that the present image content is corresponding;
Picture material brightness determination module, the brightness value that is used for screen corresponding to the luminance parameter according to the present image content, default picture material brightness set of variables, default screen set of variables backlight and present image content calculates the brightness value of present image content;
Wherein, described picture material brightness determination module comprises:
The first picture material brightness determination module, be used at the luminance parameter of present image content during less than default the first picture material brightness variable, the brightness value of present image content equals brightness value poor of the first screen variable backlight screen corresponding with the present image content;
The second picture material brightness determination module, be used at the luminance parameter of present image content during less than default the second picture material brightness variable, the brightness value of present image content equals brightness value poor of the second screen variable backlight screen corresponding with the present image content;
The 3rd picture material brightness determination module, be used at the luminance parameter of present image content during less than default the 3rd picture material brightness variable, the brightness value of present image content equals brightness value poor of the 3rd screen variable backlight screen corresponding with the present image content;
The 4th picture material brightness determination module, be used at the luminance parameter of present image content during less than default the 4th picture material brightness variable, the brightness value of present image content equals brightness value poor of the second screen variable backlight screen corresponding with the present image content;
The 5th picture material brightness determination module, be used at the luminance parameter of present image content during less than default the 5th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 5th screen variable backlight screen corresponding with the present image content;
The 6th picture material brightness determination module, be used at the luminance parameter of present image content during less than default the 6th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 6th screen variable backlight screen corresponding with the present image content;
The 7th picture material brightness determination module, be used at the luminance parameter of present image content during less than default the 7th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 7th screen variable backlight screen corresponding with the present image content;
The 8th picture material brightness determination module, be used at the luminance parameter of present image content during less than default the 8th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 8th screen variable backlight screen corresponding with the present image content.
Another object of the present invention is to provide the televisor of the dynamic adjustments device backlight that comprises above-mentioned television screen.
The present invention is by the brightness value that calculates the present image content and the backlighting parameters value of obtaining television screen, the size of the present image content brightness value that relatively calculates and the backlighting parameters value of television screen, and according to the brightness value of the television screen of dynamic adjustments as a result relatively.Because different picture materials has different brightness values, therefore can make the brightness of picture material of broadcast more balanced according to the backlighting parameters value of the brightness value dynamic adjustments television screen of different images content, thereby effectively improve the image quality of picture material, improve user's good experience.
Description of drawings
Fig. 1 is the process flow diagram of the backlight dynamical adjusting method of the television screen that provides of first embodiment of the invention;
Fig. 2 is the process flow diagram of the backlight dynamical adjusting method of the television screen that provides of second embodiment of the invention;
Fig. 3 is the structural representation of the dynamic adjustments device backlight of the first television screen provided by the invention;
Fig. 4 is the structural representation of the dynamic adjustments device backlight of the second television screen provided by the invention;
Fig. 5 is the structural representation of the dynamic adjustments device backlight of the 3rd television screen provided by the invention;
Fig. 6 is the structural representation of the dynamic adjustments device backlight of the 4th television screen provided by the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
After the luminance parameter of the present image content that embodiment of the present invention basis is obtained calculates the brightness value of this current picture material, the size of the brightness value determined of this current picture material and the backlighting parameters value of television screen relatively, and according to the backlighting parameters value of relatively result adjusting television screen.
It is a kind of that the embodiment of the present invention provides: the backlight dynamical adjusting method of television screen, device and televisor.
Described method comprises: obtain the luminance parameter of present image content, and calculate the brightness value of present image content according to the luminance parameter of described present image content;
Obtain the backlighting parameters value of television screen;
Relatively the backlighting parameters value of television screen and the brightness value of present image content, and according to the backlighting parameters value of the television screen of dynamic adjustments as a result of comparison.
Described device comprises: picture material brightness determining unit is used for obtaining the luminance parameter of present image content, and calculates the brightness value of present image content according to the luminance parameter of described present image content;
Screen backlighting parameters acquiring unit is for the backlighting parameters value of obtaining television screen;
Screen backlighting parameters regulon is used for relatively the backlighting parameters value and the brightness value of present image content of television screen, and according to the backlighting parameters value of the television screen of dynamic adjustments as a result of comparison.
Described equipment comprises: the televisor that comprises the dynamic adjustments device backlight of above-mentioned television screen.
The present invention is the set of variables backlight of predefine picture material brightness set of variables and television screen at first, when the playing image content, calculate the brightness value of this picture material according to the set of variables backlight of the luminance parameter of this picture material and predefined picture material brightness set of variables, television screen, after obtaining the backlighting parameters value of television screen, the size of the picture material brightness value that relatively calculates and the backlighting parameters value of television screen, and according to the brightness value of the television screen of dynamic adjustments as a result relatively.Because different picture materials has different brightness values, therefore can make the brightness of picture material of broadcast more balanced according to the backlighting parameters value of the brightness value dynamic adjustments television screen of different images content, thereby effectively improve the image quality of picture material, improve user's good experience.
Embodiment one:
Fig. 1 shows the process flow diagram of the backlight dynamical adjusting method of the television screen that the embodiment of the present invention one provides, this process flow diagram is mainly described is after luminance parameter according to the present image content of obtaining calculates the brightness value of this current picture material, the size of the backlighting parameters value of the brightness value of this current picture material and television screen relatively, and according to the backlighting parameters value of the television screen of dynamic adjustments as a result relatively.
In step S11, obtain the luminance parameter of present image content, and calculate the brightness value of present image content according to the luminance parameter of this current picture material.
In the present embodiment, the luminance parameter that itself has for this current picture material of the luminance parameter of present image content.Obtain the luminance parameter of this current picture material, in order to calculate the brightness value of this current picture material.
In step S12, obtain the backlighting parameters value of television screen.
Wherein, the backlighting parameters value of television screen is more than or equal to 0, and less than or equal to 255.
In step S13, relatively the backlighting parameters value of television screen and the brightness value of present image content, and according to the backlighting parameters value of the television screen of dynamic adjustments as a result of comparison.
Wherein, relatively the backlighting parameters value of television screen and the brightness value of present image content, and be specially according to the step of the backlighting parameters value of the television screen of dynamic adjustments as a result of comparison:
In the backlighting parameters value of television screen during greater than the brightness value of present image content, the backlighting parameters value of television screen is subtracted 1.
In the backlighting parameters value of television screen during less than the brightness value of present image content, the backlighting parameters value of television screen is added 1.
In the present embodiment, because the backlighting parameters value of television screen is more than or equal to 0, therefore and the numerical value less than or equal to 255, the backlighting parameters value of television screen being raised a numerical value or lowering a numerical value is to add 1 or subtract 1 on the backlighting parameters value of television screen.Concrete code is as follows:
Wherein, g_ucBackLight is the backlighting parameters value of television screen, and ucBacklight is the brightness value of present image content.
In first embodiment of the invention, during the playing image content, calculate the brightness value of this picture material according to the luminance parameter of this picture material, and after obtaining the backlighting parameters value of television screen, the size of the backlighting parameters value of the brightness value of comparison image content and television screen, and according to the brightness value of relatively the television screen of dynamic adjustments as a result.Because different picture materials has different brightness values, therefore can make the brightness of picture material of broadcast more balanced according to the backlighting parameters value of the brightness value dynamic adjustments television screen of different images content, thereby effectively improve the image quality of picture material, improve user's good experience and the purpose that realizes energy-conserving and environment-protective.
Embodiment two:
Fig. 2 shows the process flow diagram of the backlight dynamical adjusting method of the television screen that the embodiment of the present invention two provides, and details are as follows:
In step S21, the set of variables backlight of predefine television screen and the brightness set of variables of picture material.
Wherein, the set of variables backlight of predefined television screen comprises the first screen variable backlight, the second screen variable backlight, the 3rd screen variable backlight, the 4th screen variable backlight and the 5th screen variable backlight.The brightness set of variables of predefined picture material comprises the first picture material brightness variable, the second picture material brightness variable, the 3rd picture material brightness variable, the 4th picture material brightness variable, the 5th picture material brightness variable, the 6th picture material brightness variable, the 7th picture material brightness variable, the 8th picture material brightness variable.In the present embodiment, the set of variables backlight of television screen is used for television screen is divided into a plurality of zones, and what zones the variable backlight of what television screens of predefine just is divided into television screen.In like manner, the brightness set of variables of picture material is used for the brightness of picture material is divided into a plurality of zones.
In the present embodiment, the variable backlight of 5 television screens of predefine, specific as follows shown in:
SourceCode macro definition processing section:
Wherein PBLV1, PBLV2, PBLV3, PBLV4 and PBLV5 are respectively predefined the first screen variable backlight, the second screen variable backlight, the 3rd screen variable backlight, the 4th screen variable backlight and the 5th screen variable backlight.It is that 0 ~ 255 variable backlight is divided into 5 zones that the set of variables backlight of predefined television screen will be worth, and such as zone corresponding to PBLV4--PBLV5 is 0xce--0xff, is exactly 206-255 and 0xce--0xff converts 10 systems to.Certainly, the set of variables backlight of the television screen of variable backlight that also can non-5 television screens of predefine, such as variable backlight that can 6 television screens of predefine or variable backlight of 7 television screens etc., the variable number backlight of predefined television screen is more, the zone of dividing is less, but the storage space that need to take is also more.In the present embodiment, the variable backlight of 5 television screens of predefine is realized the purpose of dynamic adjustments backlight of television, has effectively saved the storage space of televisor under the prerequisite that guarantees control backlight of television function.
In the present embodiment, the brightness variable of 8 picture materials of predefine, specific as follows shown in:
#define IMV1 0x11 //0x1a 0x20
#define IMV2 0x30 //0x4b 0x50
#define IMV3 0x58 //0x70
#define IMV4 0x70 //0x85
#define IMV5 0x85 //0xa0
#define IMV6 0xa0 //0xc0
#define IMV7 0xf0 //0xd0
#define IMV8 0xff
Wherein IMV1, IMV2, IMV3, IMV4, IMV5, IMV6, IMV7 and IMV8 are respectively predefined the first picture material brightness variable, the second picture material brightness variable, the 3rd picture material brightness variable, the 4th picture material brightness variable, the 5th picture material brightness variable, the 6th picture material brightness variable, the 7th picture material brightness variable, the 8th picture material brightness variable.
In step S22, judge whether the dynamic adjustments backlight function is opened, if open, execution in step S24, if do not open, execution in step S23, do not carry out the dynamic adjustments backlight function.
In the present embodiment, the user selects (Backlight) backlight option in the menu of televisor, and from 4 sub-options of Backlight: select Auto Hight/Middle/Low/Auto, in order to open dynamic adjustments function backlight.In the present embodiment, the backlight function of dynamic adjustments television screen is to realize at the master chip of televisor, such as realizing on Mstar chip 6E48.
In step S24, obtain the luminance parameter of present image content, and calculate the brightness value of present image content according to the luminance parameter of this current picture material.
Wherein, obtain the luminance parameter of present image content, and be specially according to the step that this luminance parameter calculates the brightness value of present image content:
A, obtain the luminance parameter of present image content.
B, determine the brightness value of the screen that the present image content is corresponding.In the present embodiment, obtain the brightness lower limit of screen corresponding to the brightness upper limit of screen corresponding to the picture material brightness upper limit, picture material brightness lower limit, present image content and present image content, and the brightness lower limit of the brightness upper limit of the screen corresponding according to the picture material brightness upper limit, picture material brightness lower limit, the luminance parameter of present image content, present image content and screen corresponding to present image content is determined the brightness value of the screen that the present image content is corresponding.Such as, calculate the brightness value i of screen corresponding to present image content according to formula: i=(ADVal-MinADVal) * (MinLVal-MaxLVal)/(MaxADVal-MinADVal), specifically can adopt the brightness value of determining the screen that the present image content is corresponding with minor function:
Wherein, MaxADVal is the image content brightness upper limit, and MinADVal is image content brightness lower limit, and ADVal is the luminance parameter of current image content, and MinADVal＜ADVal＜MaxADVal.MaxLVal is the brightness upper limit of screen corresponding to present image content, and MinLVal is the lower limit of screen corresponding to present image content.
The brightness value of C, the screen corresponding according to the luminance parameter of present image content, default picture material brightness set of variables, default screen set of variables backlight and present image content calculates the brightness value of present image content.Be specially: (1) at the luminance parameter of present image content during less than default the first picture material brightness variable, and the brightness value of present image content equals brightness value poor of the first screen variable backlight screen corresponding with the present image content; (2) at the luminance parameter of present image content during less than default the second picture material brightness variable, the brightness value of present image content equals brightness value poor of the second screen variable backlight screen corresponding with the present image content; (3) at the luminance parameter of present image content during less than default the 3rd picture material brightness variable, the brightness value of present image content equals brightness value poor of the 3rd screen variable backlight screen corresponding with the present image content; (4) at the luminance parameter of present image content during less than default the 4th picture material brightness variable, the brightness value of present image content equals brightness value poor of the second screen variable backlight screen corresponding with the present image content; (5) at the luminance parameter of present image content during less than default the 5th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 5th screen variable backlight screen corresponding with the present image content; (6) at the luminance parameter of present image content during less than default the 6th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 6th screen variable backlight screen corresponding with the present image content; (7) at the luminance parameter of present image content during less than default the 7th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 7th screen variable backlight screen corresponding with the present image content; (8) at the luminance parameter of present image content during less than default the 8th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 8th screen variable backlight screen corresponding with the present image content.Certainly, if the luminance parameter of present image content is less than the first default picture material brightness variable, also less than the second default picture material brightness variable, suppose that the first default picture material brightness variable is less than the second default picture material brightness variable, calculate the brightness value of present image content according to the 2nd kind of above-mentioned situation, the similar execution of other situations repeats no more herein.
Wherein, the code of 8 kinds of situations of the brightness value of calculating present image content is specially:
Wherein ucTmp is the luminance parameter of current image content, and IMV1 ~ IMV7 is default picture material brightness variable, and PBLV1 ~ PBLV5 is predefined screen variable backlight, and ucBacklight is the brightness value of the present image content of calculating.
In the present embodiment, step S25 is identical with the step S12 of embodiment one, and step S26 is identical with the step S13 of embodiment one, repeats no more herein.
In second embodiment of the invention, predefine is used for 2 set of variables of the brightness of calculating present image content, and jointly calculate the brightness value of present image content according to predefined 2 set of variables and the luminance parameter of the present image content obtained, and the size of the backlighting parameters value of the brightness value by present image content relatively and television screen is come the backlighting parameters value of dynamic adjustments television screen.
Embodiment three:
Fig. 3 shows the structural representation of the dynamic adjustments device backlight of the first television screen provided by the invention, for convenience of explanation, only shows the part relevant to the embodiment of the present invention.
The dynamic adjustments device backlight of this television screen can be used for the various information processing terminals by wired or wireless network connection server, can be to run on the unit that software unit, hardware cell or software and hardware in these terminals combine, also can be used as independently, suspension member is integrated in these terminals or runs in the application system of these terminals, wherein:
Picture material brightness determining unit 21 is used for obtaining the luminance parameter of present image content, and calculates the brightness value of present image content according to the luminance parameter of this current picture material.
Further, the dynamic adjustments device backlight of this television screen also comprises: the default unit 24 of set of variables backlight and brightness set of variables are preset unit 25.
The default unit 24 of set of variables backlight is used for the set of variables backlight of predefine television screen, and the set of variables backlight of this television screen comprises the first screen variable backlight, the second screen variable backlight, the 3rd screen variable backlight, the 4th screen variable backlight and the 5th screen variable backlight.
The default unit 25 of brightness set of variables is used for the brightness set of variables of predefine picture material, and the brightness set of variables of this picture material comprises the first picture material brightness variable, the second picture material brightness variable, the 3rd picture material brightness variable, the 4th picture material brightness variable, the 5th picture material brightness variable, the 6th picture material brightness variable, the 7th picture material brightness variable, the 8th picture material brightness variable.
Further, this picture material brightness determining unit 21 comprises: luminance parameter acquisition module 211, screen brightness value determination module 212 and picture material brightness determination module 213.
Luminance parameter acquisition module 211 is used for obtaining the luminance parameter of present image content.
Screen brightness value determination module 212 is used for the brightness value of screen corresponding to definite present image content.In the present embodiment, the brightness lower limit of screen corresponding to the brightness upper limit of the screen corresponding according to the picture material brightness upper limit, picture material brightness lower limit, the luminance parameter of present image content, present image content and present image content is determined the brightness value of the screen that the present image content is corresponding.
Picture material brightness determination module 213, the brightness value that is used for screen corresponding to the luminance parameter according to the present image content, default picture material brightness set of variables, default screen set of variables backlight and present image content calculates the brightness value of present image content.
Further, this picture material brightness determination module 213 comprises: the first picture material brightness determination module 2131, the second picture material brightness determination module 2132, the 3rd picture material brightness determination module 2133, the 4th picture material brightness determination module 2134, the 5th picture material brightness determination module 2135, the 6th picture material brightness determination module 2136, the 7th picture material brightness determination module 2137 and the 8th picture material brightness determination module 2138.In the present embodiment, for the ease of mapping, above-mentioned 8 little modules are not drawn in same width image, see the structural drawing of these 4 figure of Fig. 3 ~ Fig. 6 for details.
The first picture material brightness determination module 2131 is used at the luminance parameter of present image content during less than default the first picture material brightness variable, and the brightness value of present image content equals brightness value poor of the first screen variable backlight screen corresponding with the present image content.
The second picture material brightness determination module 2132 is used at the luminance parameter of present image content during less than default the second picture material brightness variable, and the brightness value of present image content equals brightness value poor of the second screen variable backlight screen corresponding with the present image content.
The 3rd picture material brightness determination module 2133 is used at the luminance parameter of present image content during less than default the 3rd picture material brightness variable, and the brightness value of present image content equals brightness value poor of the 3rd screen variable backlight screen corresponding with the present image content.
The 4th picture material brightness determination module 2134 is used at the luminance parameter of present image content during less than default the 4th picture material brightness variable, and the brightness value of present image content equals brightness value poor of the second screen variable backlight screen corresponding with the present image content.
The 5th picture material brightness determination module 2135 is used at the luminance parameter of present image content during less than default the 5th picture material brightness variable, and the brightness value of present image content equals brightness value poor of the 5th screen variable backlight screen corresponding with the present image content.
The 6th picture material brightness determination module 2136 is used at the luminance parameter of present image content during less than default the 6th picture material brightness variable, and the brightness value of present image content equals brightness value poor of the 6th screen variable backlight screen corresponding with the present image content.
The 7th picture material brightness determination module 2137 is used at the luminance parameter of present image content during less than default the 7th picture material brightness variable, and the brightness value of present image content equals brightness value poor of the 7th screen variable backlight screen corresponding with the present image content.
The 8th picture material brightness determination module 2138 is used at the luminance parameter of present image content during less than default the 8th picture material brightness variable, and the brightness value of present image content equals brightness value poor of the 8th screen variable backlight screen corresponding with the present image content.
Screen backlighting parameters acquiring unit 22 is for the backlighting parameters value of obtaining television screen.
Screen backlighting parameters regulon 23 is used for relatively the backlighting parameters value and the brightness value of present image content of television screen, and according to the backlighting parameters value of the television screen of dynamic adjustments as a result of comparison.
Further, this screen backlighting parameters regulon 23 comprises: backlighting parameters lowers module 231 and backlighting parameters raises module 232.
Backlighting parameters is lowered module 231, is used in the backlighting parameters value of television screen during greater than the brightness value of present image content, and the backlighting parameters value of television screen is subtracted 1.
Backlighting parameters raises module 232, is used in the backlighting parameters value of television screen during less than the brightness value of present image content, and the backlighting parameters value of television screen is added 1.
In third embodiment of the invention, the backlighting parameters value size of the television screen that the picture material brightness value that screen backlighting parameters regulon 23 is determined by comparison image content brightness determining unit 21 and screen backlighting parameters acquiring unit 22 obtain realizes the backlighting parameters value function of dynamic adjustments television screen.Because different picture materials has different brightness values, therefore can make the brightness of picture material of broadcast more balanced according to the backlighting parameters value of the brightness value dynamic adjustments television screen of different images content, thereby effectively improve the image quality of picture material, improve user's good experience.
The present invention is the set of variables backlight of predefine picture material brightness set of variables and television screen at first, when the playing image content, calculate the brightness value of this picture material according to the set of variables backlight of the luminance parameter of this picture material and predefined picture material brightness set of variables, television screen, after obtaining the backlighting parameters value of television screen, the size of the picture material brightness value that relatively calculates and the backlighting parameters value of television screen, and according to the brightness value of the television screen of dynamic adjustments as a result relatively.Because different picture materials has different brightness values, therefore can make the brightness of picture material of broadcast more balanced according to the backlighting parameters value of the brightness value dynamic adjustments television screen of different images content, thereby effectively improve the image quality of picture material, improve user's good experience.
The above is only preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. the backlight dynamical adjusting method of a television screen, is characterized in that, described method comprises the steps:
The set of variables backlight of predefine television screen, the set of variables backlight of described television screen comprise the first screen variable backlight, the second screen variable backlight, the 3rd screen variable backlight, the 4th screen variable backlight and the 5th screen variable backlight;
The brightness set of variables of predefine picture material, the brightness set of variables of described picture material comprise the first picture material brightness variable, the second picture material brightness variable, the 3rd picture material brightness variable, the 4th picture material brightness variable, the 5th picture material brightness variable, the 6th picture material brightness variable, the 7th picture material brightness variable, the 8th picture material brightness variable;
Obtain the luminance parameter of present image content, and calculate the brightness value of present image content according to the luminance parameter of described present image content;
Obtain the backlighting parameters value of television screen;
Relatively the backlighting parameters value of television screen and the brightness value of present image content, and according to the backlighting parameters value of the television screen of dynamic adjustments as a result of comparison;
The described luminance parameter that obtains the present image content, and be specially according to the step that the luminance parameter of described present image content calculates the brightness value of present image content:
Obtain the luminance parameter of present image content;
Determine the brightness value of the screen that the present image content is corresponding;
The brightness value of the screen corresponding according to the luminance parameter of present image content, default picture material brightness set of variables, default screen set of variables backlight and present image content calculates the brightness value of present image content;
Wherein, the brightness value of screen corresponding to described luminance parameter according to the present image content, default picture material brightness set of variables, default screen set of variables backlight and the present image content step that calculates the brightness value of present image content is specially:
At the luminance parameter of present image content during less than default the first picture material brightness variable, the brightness value of present image content equals brightness value poor of the first screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the second picture material brightness variable, the brightness value of present image content equals brightness value poor of the second screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the 3rd picture material brightness variable, the brightness value of present image content equals brightness value poor of the 3rd screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the 4th picture material brightness variable, the brightness value of present image content equals brightness value poor of the second screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the 5th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 5th screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the 6th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 6th screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the 7th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 7th screen variable backlight screen corresponding with the present image content;
At the luminance parameter of present image content during less than default the 8th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 8th screen variable backlight screen corresponding with the present image content.
2. the method for claim 1, is characterized in that, the backlighting parameters value of described relatively television screen and the brightness value of present image content, and be specially according to the step of the backlighting parameters value of the television screen of dynamic adjustments as a result of comparison:
During the brightness value determined greater than the present image content in the backlighting parameters value of television screen, the backlighting parameters value of television screen is subtracted 1;
During the brightness value determined less than the present image content in the backlighting parameters value of television screen, the backlighting parameters value of television screen is added 1.
3. the dynamic adjustments device backlight of a television screen, is characterized in that, described device comprises:
Picture material brightness determining unit is used for obtaining the luminance parameter of present image content, and calculates the brightness value of present image content according to the luminance parameter of described present image content;
Screen backlighting parameters acquiring unit is for the backlighting parameters value of obtaining television screen;
Screen backlighting parameters regulon is used for relatively the backlighting parameters value and the brightness value of present image content of television screen, and according to the backlighting parameters value of the television screen of dynamic adjustments as a result of comparison;
Set of variables backlight is preset the unit, the set of variables backlight that is used for the predefine television screen, the set of variables backlight of described television screen comprise the first screen variable backlight, the second screen variable backlight, the 3rd screen variable backlight, the 4th screen variable backlight and the 5th screen variable backlight;
The brightness set of variables is preset the unit, be used for the brightness set of variables of predefine picture material, the brightness set of variables of described picture material comprises the first picture material brightness variable, the second picture material brightness variable, the 3rd picture material brightness variable, the 4th picture material brightness variable, the 5th picture material brightness variable, the 6th picture material brightness variable, the 7th picture material brightness variable, the 8th picture material brightness variable;
Described picture material brightness determining unit comprises:
The luminance parameter acquisition module is for the luminance parameter that obtains the present image content;
Screen brightness value determination module is for the brightness value of determining the screen that the present image content is corresponding;
Picture material brightness determination module, the brightness value that is used for screen corresponding to the luminance parameter according to the present image content, default picture material brightness set of variables, default screen set of variables backlight and present image content calculates the brightness value of present image content;
Wherein, described picture material brightness determination module comprises:
The first picture material brightness determination module, be used at the luminance parameter of present image content during less than default the first picture material brightness variable, the brightness value of present image content equals brightness value poor of the first screen variable backlight screen corresponding with the present image content;
The second picture material brightness determination module, be used at the luminance parameter of present image content during less than default the second picture material brightness variable, the brightness value of present image content equals brightness value poor of the second screen variable backlight screen corresponding with the present image content;
The 3rd picture material brightness determination module, be used at the luminance parameter of present image content during less than default the 3rd picture material brightness variable, the brightness value of present image content equals brightness value poor of the 3rd screen variable backlight screen corresponding with the present image content;
The 4th picture material brightness determination module, be used at the luminance parameter of present image content during less than default the 4th picture material brightness variable, the brightness value of present image content equals brightness value poor of the second screen variable backlight screen corresponding with the present image content;
The 5th picture material brightness determination module, be used at the luminance parameter of present image content during less than default the 5th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 5th screen variable backlight screen corresponding with the present image content;
The 6th picture material brightness determination module, be used at the luminance parameter of present image content during less than default the 6th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 6th screen variable backlight screen corresponding with the present image content;
The 7th picture material brightness determination module, be used at the luminance parameter of present image content during less than default the 7th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 7th screen variable backlight screen corresponding with the present image content;
The 8th picture material brightness determination module, be used at the luminance parameter of present image content during less than default the 8th picture material brightness variable, the brightness value of present image content equals brightness value poor of the 8th screen variable backlight screen corresponding with the present image content.
4. televisor that comprises the dynamic adjustments device backlight of television screen claimed in claim 3.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102179953A CN102290035B (en) | 2011-08-01 | 2011-08-01 | Method and device for dynamically adjusting backlight of television screen, and television |
| HK12101463.2A HK1167511A1 (en) | 2011-08-01 | 2012-02-15 | A television screen backlight dynamic adjustment method, apparatus and television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102179953A CN102290035B (en) | 2011-08-01 | 2011-08-01 | Method and device for dynamically adjusting backlight of television screen, and television |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102290035A CN102290035A (en) | 2011-12-21 |
| CN102290035B true CN102290035B (en) | 2013-05-08 |
Family
ID=45336401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102179953A Expired - Fee Related CN102290035B (en) | 2011-08-01 | 2011-08-01 | Method and device for dynamically adjusting backlight of television screen, and television |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102290035B (en) |
| HK (1) | HK1167511A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103686350A (en) * | 2013-12-27 | 2014-03-26 | 乐视致新电子科技（天津）有限公司 | Method and system for adjusting image quality |
| TWI514369B (en) * | 2014-05-29 | 2015-12-21 | Au Optronics Corp | Signal conversion method for display image |
| CN106572341B (en) * | 2016-10-31 | 2019-08-30 | 努比亚技术有限公司 | Electricity saving method and device in projection |
| US10304393B2 (en) * | 2017-08-21 | 2019-05-28 | Novatek Microelectronics Corp. | Brightness compensation method and circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855218A (en) * | 2005-04-21 | 2006-11-01 | 凌阳科技股份有限公司 | Method and device for adjusting display device brightness |
| CN101127206A (en) * | 2007-09-25 | 2008-02-20 | 北京中星微电子有限公司 | Method, device and a display for automatically determining display brightness |
| CN101281730A (en) * | 2008-03-20 | 2008-10-08 | 青岛海信电器股份有限公司 | Liquid crystal display method |
| CN101383139A (en) * | 2008-06-27 | 2009-03-11 | 青岛海信电器股份有限公司 | Luminance control method for display screen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4628770B2 (en) * | 2004-02-09 | 2011-02-09 | 株式会社日立製作所 | Image display device having illumination device and image display method |
-
2011
- 2011-08-01 CN CN2011102179953A patent/CN102290035B/en not_active Expired - Fee Related
-
2012
- 2012-02-15 HK HK12101463.2A patent/HK1167511A1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855218A (en) * | 2005-04-21 | 2006-11-01 | 凌阳科技股份有限公司 | Method and device for adjusting display device brightness |
| CN101127206A (en) * | 2007-09-25 | 2008-02-20 | 北京中星微电子有限公司 | Method, device and a display for automatically determining display brightness |
| CN101281730A (en) * | 2008-03-20 | 2008-10-08 | 青岛海信电器股份有限公司 | Liquid crystal display method |
| CN101383139A (en) * | 2008-06-27 | 2009-03-11 | 青岛海信电器股份有限公司 | Luminance control method for display screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102290035A (en) | 2011-12-21 |
| HK1167511A1 (en) | 2012-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101404148B (en) | Method for regulating terminal screen display effect and terminal unit | |
| CN105469746A (en) | Liquid crystal screen backlight control device, liquid crystal television and micro control unit (MCU) chip | |
| CN103617792B (en) | A kind of regulate display terminal picture to show method and display terminal | |
| CN102290035B (en) | Method and device for dynamically adjusting backlight of television screen, and television | |
| CN102957934B (en) | Display processing method, device and display device | |
| CN108962150B (en) | Image quality optimization method, device and equipment based on regional dimming and storage medium | |
| CN107689215B (en) | Backlight adjusting method and device of intelligent display equipment | |
| CN103763537A (en) | Method and device for dynamically regulating display image quality | |
| CN204031318U (en) | A kind of modularization TV | |
| CN103578435A (en) | Backlight adjusting method and electronic device with backlight adjusting function | |
| CN204652537U (en) | A kind of LCD TV realizing automatic regulating lightness | |
| CN105320481A (en) | Data display method and device and mobile terminal | |
| CN103019688A (en) | Terminal and screen control method for terminal in reading mode | |
| WO2013148702A1 (en) | Techniques for user profiles for viewing devices | |
| CN105810152A (en) | Backlight control method and device for display terminal, and television | |
| CN106251831A (en) | A kind of screen display lightness regulating method based on ambient light and system | |
| CN104581345A (en) | Method and device for adjusting displayed frames | |
| CN109327734B (en) | Method for down-converting HDR video to SDR video based on dynamic photometry | |
| CN102402970A (en) | Method and device for adjusting contrast of display screen | |
| US8416257B2 (en) | Video signal processing circuit, display device, mobile terminal, and program | |
| CN113271422B (en) | Brightness adjusting method and device, television and computer readable storage medium | |
| CN105872701A (en) | Method and mobile terminal for realizing video playing control | |
| CN112863451B (en) | Display apparatus and backlight control method | |
| CN103686423B (en) | For the collocation method and device of the visible image quality parameter of user | |
| CN105957495A (en) | RGB signal processing method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1167511 Country of ref document: HK |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1167511 Country of ref document: HK |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20150801 |
|
| EXPY | Termination of patent right or utility model |