CN105957495A - RGB signal processing method and device - Google Patents
RGB signal processing method and device Download PDFInfo
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- CN105957495A CN105957495A CN201610573209.6A CN201610573209A CN105957495A CN 105957495 A CN105957495 A CN 105957495A CN 201610573209 A CN201610573209 A CN 201610573209A CN 105957495 A CN105957495 A CN 105957495A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
- G09G5/06—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour palettes, e.g. look-up tables
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
- G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
An embodiment of the invention discloses an RGB signal processing method and device. The method comprises the following steps: when receiving an RGB signal, detecting whether the RGB signal represents a pure color image; if detecting that the RGB signal represents the pure color image, obtaining second gray-scale data of the RGB signal in mapping relation with first gray-scale data according to the first gray-scale data of the RGB signal and a preset gray scale mapping table, wherein the red gray-scale value R2 and green gray-scale value G2 in the second gray-scale data are larger than the red gray-scale value R1 and green gray-scale value G1 in the first gray-scale data, and the blue gray-scale value B2 in the second gray-scale data is smaller than the blue gray-scale value B1 in the first gray-scale data; and outputting an output voltage of the RGB signal to a liquid crystal panel according to the second gray-scale data of the RGB signal and Gamma reference voltage corresponding to the second gray-scale data. The brightness of the liquid crystal panel comprising RGBW sub-pixel units in displaying the pure color images can be improved.
Description
Technical field
The present invention relates to electronic circuit technology field, particularly relate to the processing method and processing device of a kind of rgb signal.
Background technology
At present, liquid crystal panel including pixel unit array, each pixel cell in pixel unit array can
Including R (Red, red), G (Green, green), B (Blue, blue) three sub pixel unit.
Along with the development of technology, each pixel cell in pixel unit array is except including R, G, B tri-seed picture
Outside element unit, may also include W (White, white) sub-pixel unit.By including W sub-pixel, can
So that pixel cell possesses high penetration such that it is able to save liquid crystal panel power consumption.But, due to RGBW liquid
Crystal panel introduces W pixel cell, so the opening of RGBW tri-sub-pixel unit of liquid crystal panel R, G, B
Mouth rate is the 75% of conventional RGB liquid crystal panel, and when showing pure color picture, the entirety of RGBW screen is bright
Degree can be less than RGB screen, and display picture is the darkest.
Summary of the invention
Embodiments provide the processing method and processing device of a kind of rgb signal.Use the embodiment of the present invention,
The liquid crystal panel the including RGBW sub-pixel unit brightness when showing pure color picture can be improved.
First aspect, embodiments provides the processing method of a kind of rgb signal, and the method comprises the steps that
When receiving rgb signal, detect described rgb signal and indicate whether as solid-color image；
If detecting, described rgb signal is expressed as solid-color image, according to the first GTG of described rgb signal
Data and default GTG mapping table, it is thus achieved that with the described RGB that described first luma data becomes mapping relations
Second luma data of signal, wherein, the red grey decision-making R2 in described second luma data and green GTG
The red grey decision-making R1 that value G2 is respectively greater than in described first luma data and green grey decision-making G1, and described
Blue grey decision-making B2 in second luma data is less than the blue grey decision-making B1 in described first luma data；
The second luma data according to described rgb signal and Gamma reference corresponding to described second luma data
Voltage, exports the output voltage of described rgb signal to liquid crystal panel.
Optionally, if there is multiple luma data in described GTG mapping table and becoming with described first luma data
Mapping relations, described acquisition becomes the second ash of the described rgb signal of mapping relations with described first luma data
Exponent number evidence, including:
Determine the brightness ratio that in described rgb signal, R signal, G-signal, B signal are contributed respectively；
According to described brightness ratio, determine from the plurality of luma data and match with described brightness ratio
Second luma data.
It is optionally, described that to determine that R signal, G-signal, B signal in described rgb signal are contributed respectively bright
Degree ratio, including:
Determine that R signal in the described rgb signal matched with described first luma data, G-signal, B believe
Number the first brightness ratio contributed respectively；
According to described first brightness ratio and the brightness mapping table preset, determine to become with described first brightness ratio
Second brightness ratio of mapping relations；
Described according to described brightness ratio, determine from the plurality of luma data and described brightness ratio phase
The second luma data joined, including:
According to described second brightness ratio, determine from the plurality of luma data and described second brightness ratio
The second luma data matched.
Optionally, detect that described rgb signal is expressed as solid-color image if described, believe according to described RGB
Number the first luma data and default GTG mapping table, it is thus achieved that with described first luma data become map close
After second luma data of the described rgb signal of system, described method also includes:
The the first gamma reference voltage data base currently provided is switched to the second gamma reference voltage data base,
Red grey decision-making or gamma reference voltage corresponding to green grey decision-making in described second gamma reference voltage data base
More than described in described first gamma reference voltage data base, red grey decision-making or described green grey decision-making are corresponding
Gamma reference voltage, the Gamma reference electricity that in described second gamma reference voltage data base, blue grey decision-making is corresponding
The pressure gamma reference voltage that blue grey decision-making is corresponding less than described in described first gamma reference voltage data base；
The gamma ginseng corresponding with described second luma data is determined in described second gamma reference voltage data base
Examine voltage.
Optionally, after the described rgb signal of described detection indicates whether as solid-color image, described method is also wrapped
Include:
If detecting, described rgb signal is expressed as ninsolid color image, according to described the of described rgb signal
One luma data and the gamma reference voltage corresponding with described first luma data, export institute to liquid crystal panel
State the output voltage of rgb signal.
Second aspect, embodiments provides the processing means of a kind of rgb signal, and this device comprises the steps that
Detector unit, for when receiving rgb signal, detects described rgb signal and indicates whether as pure
Color image；
For described detector unit, acquiring unit, if detecting that described rgb signal is expressed as solid-color image, root
The first luma data and default GTG mapping table according to described rgb signal, it is thus achieved that with described first GTG
Data become the second luma data of the described rgb signal of mapping relations, wherein, in described second luma data
Red grey decision-making R2 be respectively greater than the red grey decision-making in described first luma data with green grey decision-making G2
R1 and the blue grey decision-making B2 in green grey decision-making G1, and described second luma data is less than described first ash
Blue grey decision-making B1 in exponent number evidence；
First output unit, for the second luma data according to described rgb signal and described second GTG
The gamma reference voltage that data are corresponding, exports the output voltage of described rgb signal to liquid crystal panel.
Optionally, if there is multiple luma data in described GTG mapping table and becoming with described first luma data
Mapping relations, described acquiring unit includes:
First determines unit, is used for determining the tribute respectively of R signal in described rgb signal, G-signal, B signal
The brightness ratio offered；
Second determines unit, for according to described brightness ratio, determines and institute from the plurality of luma data
State the second luma data that brightness ratio matches.
Optionally, described first determines that unit is additionally operable to:
Determine that R signal in the described rgb signal matched with described first luma data, G-signal, B believe
Number the first brightness ratio contributed respectively；
According to described first brightness ratio and the brightness mapping table preset, determine to become with described first brightness ratio
Second brightness ratio of mapping relations；
Described second determines that unit is additionally operable to:
According to described second brightness ratio, determine from the plurality of luma data and described second brightness ratio
The second luma data matched.
Optionally, also include:
Switch unit, obtains to become described in mapping relations with described first luma data for described acquiring unit
After second luma data of rgb signal, the first gamma reference voltage data base currently provided is switched to
Second gamma reference voltage data base, red grey decision-making or green in described second gamma reference voltage data base
The gamma reference voltage that grey decision-making is corresponding is more than red GTG described in described first gamma reference voltage data base
Value or gamma reference voltage corresponding to described green grey decision-making, blue in described second gamma reference voltage data base
The gamma reference voltage that color grey decision-making is corresponding is blue grey less than described in described first gamma reference voltage data base
The gamma reference voltage that rank value is corresponding；
3rd determines unit, for determining in described second gamma reference voltage data base and described second ash
Exponent number is according to corresponding gamma reference voltage.
Optionally, also include:
For described detector unit, second output unit, if detecting that described rgb signal is expressed as ninsolid color figure
Picture, according to described first luma data and the gal corresponding with described first luma data of described rgb signal
Horse reference voltage, exports the output voltage of described rgb signal to liquid crystal panel.
The third aspect, embodiments provides the data driving chip of a kind of liquid crystal panel, and these data are driven
Dynamic chip includes any one device described by embodiment of the present invention second aspect.
In the embodiment of the present invention, when receiving rgb signal, by detection rgb signal indicate whether into
Solid-color image, it is determined whether need the luma data of rgb signal is adjusted.When detecting that RGB believes
Number be expressed as solid-color image, then can according to the first luma data of rgb signal and default GTG mapping table,
Obtain the second luma data of the described rgb signal becoming mapping relations with the first luma data, wherein, described
Red grey decision-making R2 in second luma data is respectively greater than described first luma data with green grey decision-making G2
In red grey decision-making R1 and the blue grey decision-making B2 in green grey decision-making G1, and described second luma data
Less than the blue grey decision-making B1 in described first luma data, when adjusting rgb signal by the way
After luma data is the second luma data, can be according to the second luma data of described rgb signal and described
The gamma reference voltage that two luma data are corresponding, exports the output voltage of described rgb signal to liquid crystal panel.
By the way, owing to the R in rgb signal, G-signal are tuned up, then corresponding to liquid crystal panel output
R, the output voltage of G-signal increase, and then the liquid crystal surface including RGBW sub-pixel unit can be improved
The plate brightness when showing pure color picture.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required in embodiment being described below
Accompanying drawing to be used is briefly described, it should be apparent that, the accompanying drawing in describing below is some of the present invention
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawing can be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of an embodiment of the processing method of a kind of rgb signal in the present invention；
Fig. 2 is the flow chart of another embodiment of the processing method of a kind of rgb signal in the present invention；
Fig. 3 is the structural representation of an embodiment of the processing means of a kind of rgb signal in the present invention；
Fig. 4 is the structural representation of another embodiment of the processing means of a kind of rgb signal in the present invention；
Fig. 5 is the structural representation of an embodiment of the data driving chip of a kind of liquid crystal panel in the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is a part of embodiment of the present invention rather than all
Embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative labor
The every other embodiment obtained under dynamic premise, broadly falls into the scope of protection of the invention.
Below with reference to the accompanying drawings embodiments of the invention are described.See Fig. 1, for the one in the present invention
The flow chart of one embodiment of the processing method of rgb signal.The method can comprise the following steps.
Step S101, when receiving rgb signal, detects described rgb signal and indicates whether as pure color figure
Picture.
In one embodiment, can be by the system interface in the data driving chip that is connected with liquid crystal panel
(System Interface) receives rgb signal, and rgb signal can be picture signal, it is possible to believe for video
Number.Wherein, system interface can include MPI DSI interface, CPU-IF interface, RGB-IF interface, SPI
At least one in interface or I2C interface.When receiving rgb signal, can be to rgb signal at
Reason, as being compressed, cache, decompressing, enhancement process etc..And then, the RGB letter received can be detected
Number indicate whether as solid-color image.Concrete, can determine that this RGB believes by the luma data of rgb signal
Number indicate whether as solid-color image, if here, rgb signal is picture signal, then can determine that this picture signal
Luma data indicate whether as solid-color image；If rgb signal is video signal, then can determine that currently processed
The luma data of a frame rgb signal indicate whether as solid-color image.Wherein, luma data can include R,
The grey decision-making of G, B, concrete, the luma data of RGB is represented by (R, G, B).Wherein, R generation
Table redness grey decision-making, G represents green grey decision-making, and B represents blue grey decision-making, the grey decision-making value model of each color
Enclose is 0～255.The ash of the rgb signal being currently received can be determined by the RGB color synopsis prestored
Exponent number is according to indicating whether as solid-color image.RGB color synopsis includes the face corresponding to each luma data
Color, by the color corresponding to the RGB luma data that inquire-receive in RGB color synopsis arrives, comes
Judge that this rgb signal indicates whether as solid-color image.
Step S102, if detecting, described rgb signal is expressed as solid-color image, according to described rgb signal
The first luma data and default GTG mapping table, it is thus achieved that become mapping relations with described first luma data
The second luma data of described rgb signal, wherein, the red grey decision-making in described second luma data
The red grey decision-making R1 that R2 is respectively greater than in described first luma data with green grey decision-making G2 and green GTG
Blue grey decision-making B2 in value G1, and described second luma data is less than the indigo plant in described first luma data
Color grey decision-making B1.
In one embodiment, if detecting, rgb signal is expressed as solid-color image, then can believe according to RGB
Number the first luma data and default GTG mapping table, it is thus achieved that become mapping relations with this first luma data
The second luma data of rgb signal.If it is to say, detect that rgb signal is expressed as solid-color image,
Then the luma data of this rgb signal can be adjusted.Wherein, the first luma data of rgb signal is for connecing
When receiving rgb signal, the luma data of this rgb signal, or, the rgb signal received is carried out
After above-mentioned processing procedure, the luma data of this rgb signal.Tool to the first luma data of rgb signal
Body regulative mode can be the first luma data according to rgb signal, and the GTG mapping table preset, and obtains
The second luma data with the rgb signal that the first luma data becomes mapping relations.Wherein, above-mentioned default ash
Rank mapping table is for being mapped as other luma data, the first ash exponent number by the first luma data according to preset rules
According to becoming mapping relations with one or more luma data.Preset rules can be to adjust demand or root according to backstage
Determine, according to different liquid crystal panel configurations, the brightness needing to adjust, and then determine that rgb signal needs the electricity of output
Pressure such that it is able to determine the second luma data corresponding to the output voltage of the rgb signal after adjustment.And can
According to this preset rules preset gray scale mapping table, corresponding one or more second ashes of the most each first luma data
, if the demand of adjustment or liquid crystal panel are differently configured, then can there is the first luma data corresponding different in exponent number evidence
The situation of the second luma data.Wherein, the first luma data can be expressed as (R1, G1, B1)；Second ash
Exponent number is according to can be expressed as (R2, G2, B2).It should be noted that the second luma data and the first ash exponent number
According to mapping relations all need to meet R2>R1, G2>G1, and B2<B1.Or, need to meet B2 < B1
While, meet R2 > at least one in R1 or G2 > G1.
Step S103, the second luma data and described second luma data according to described rgb signal are corresponding
Gamma reference voltage, to liquid crystal panel export described rgb signal output voltage.
In one embodiment, mapping relations can be become according to determine in step s 102 with the first luma data
The second luma data, determine the gamma reference voltage corresponding with the second luma data, and according to the second GTG
Data and gamma reference voltage corresponding to the second luma data, export above-mentioned rgb signal to liquid crystal panel
Output voltage.Concrete, gamma reference voltage can be generated by gamma electric voltage producer, when determining the second ash
After exponent number evidence, the gamma ginseng corresponding with the second luma data can be selected from the gamma reference voltage of above-mentioned generation
Examine voltage.Thus, can according to gamma reference voltage corresponding to the second luma data and the second luma data,
The output voltage of this rgb signal is exported, so that liquid crystal panel is according to the output of rgb signal to liquid crystal panel
Voltage, determines the display brightness of the RGB sub-pixel unit corresponding with this output voltage.
In the embodiment of the present invention, when receiving rgb signal, by detection rgb signal indicate whether into
Solid-color image, it is determined whether need the luma data of rgb signal is adjusted.When detecting that RGB believes
Number be expressed as solid-color image, then can according to the first luma data of rgb signal and default GTG mapping table,
Obtain the second luma data of the described rgb signal becoming mapping relations with the first luma data, wherein, described
Red grey decision-making R2 in second luma data is respectively greater than described first luma data with green grey decision-making G2
In red grey decision-making R1 and the blue grey decision-making B2 in green grey decision-making G1, and described second luma data
Less than the blue grey decision-making B1 in described first luma data, when adjusting rgb signal by the way
After luma data is the second luma data, can be according to the second luma data of described rgb signal and described
The gamma reference voltage that two luma data are corresponding, exports the output voltage of described rgb signal to liquid crystal panel.
By the way, owing to the R in rgb signal, G-signal are tuned up, then corresponding to liquid crystal panel output
R, the output voltage of G-signal increase, and then the liquid crystal surface including RGBW sub-pixel unit can be improved
The plate brightness when showing pure color picture.
See the stream of another embodiment of the processing method that Fig. 2, Fig. 2 are a kind of rgb signal in the present invention
Cheng Tu.The method can comprise the following steps.
Step S201, when receiving rgb signal, detects described rgb signal and indicates whether as pure color figure
Picture.
In one embodiment, can be by the system interface in the data driving chip that is connected with liquid crystal panel
(System Interface) receives rgb signal, and rgb signal can be picture signal, it is possible to believe for video
Number.Wherein, system interface can include MPI DSI interface, CPU-IF interface, RGB-IF interface, SPI
At least one in interface or I2C interface.When receiving rgb signal, can be to rgb signal at
Reason, as being compressed, cache, decompressing, enhancement process etc..And then, the RGB letter received can be detected
Number indicate whether as solid-color image.Concrete, can determine that this RGB believes by the luma data of rgb signal
Number indicate whether as solid-color image, if here, rgb signal is picture signal, then can determine that this picture signal
Luma data indicate whether as solid-color image；If rgb signal is video signal, then can determine that currently processed
The luma data of a frame rgb signal indicate whether as solid-color image.Wherein, luma data can include R,
The grey decision-making of G, B, concrete, the luma data of RGB is represented by (R, G, B).Wherein, R generation
Table redness grey decision-making, G represents green grey decision-making, and B represents blue grey decision-making, the grey decision-making value model of each color
Enclose is 0～255.The ash of the rgb signal being currently received can be determined by the RGB color synopsis prestored
Exponent number is according to indicating whether as solid-color image.RGB color synopsis includes the face corresponding to each luma data
Color, by the color corresponding to the RGB luma data that inquire-receive in RGB color synopsis arrives, comes
Judge that this rgb signal indicates whether as solid-color image.When detecting that rgb signal is expressed as solid-color image,
Perform step S202；When detecting that rgb signal is expressed as ninsolid color image, perform step S206.
Step S202, if detecting, described rgb signal is expressed as solid-color image, according to described rgb signal
The first luma data and default GTG mapping table, it is thus achieved that become mapping relations with described first luma data
The second luma data of described rgb signal, wherein, the red grey decision-making in described second luma data
The red grey decision-making R1 that R2 is respectively greater than in described first luma data with green grey decision-making G2 and green GTG
Blue grey decision-making B2 in value G1, and described second luma data is less than the indigo plant in described first luma data
Color grey decision-making B1.
In one embodiment, if there is multiple luma data and described first ash in described GTG mapping table
Exponent number is according to becoming mapping relations, it is thus achieved that with the of the described rgb signal that described first luma data becomes mapping relations
The concrete mode of two luma data comprises the steps that
Determine the brightness ratio that in described rgb signal, R signal, G-signal, B signal are contributed respectively；
According to described brightness ratio, determine from the plurality of luma data and match with described brightness ratio
Second luma data.
Optionally, the brightness ratio that in described rgb signal, R signal, G-signal, B signal are contributed respectively is determined
The implementation method of example comprises the steps that
Determine that R signal in the described rgb signal matched with described first luma data, G-signal, B believe
Number the first brightness ratio contributed respectively；
According to described first brightness ratio and the brightness mapping table preset, determine to become with described first brightness ratio
Second brightness ratio of mapping relations；
Described according to described brightness ratio, determine from the plurality of luma data and described brightness ratio phase
The second luma data joined, including:
According to described second brightness ratio, determine from the plurality of luma data and described second brightness ratio
The second luma data matched.
Concrete, can first determine that R signal in the rgb signal matched with the first luma data, G-signal,
The first brightness ratio that B signal is contributed respectively, and can determine and the first brightness according to default brightness mapping table
Ratio becomes the second brightness ratio of mapping relations.Wherein, brightness mapping table can be according to backstage demand or parse
The parameter such as the demand brightness of liquid crystal panel pre-build.Such as, for pure color RGB of different colours
Signal, the brightness of required regulation is different, and then can determine that R signal in the pure color rgb signal of different colours,
The first brightness ratio that G-signal, B signal are contributed respectively, redefines R in the brightness regulated as required
The second brightness ratio that signal, G-signal, B signal are contributed respectively.Thus, can be each pure color RGB letter
Number according to the difference of brightness regulation demand, set up original R signal, G-signal, B signal are contributed respectively
The second brightness that R signal after one brightness ratio and according to demand regulation, G-signal, B signal are contributed respectively
The mapping relations of ratio, thus brightness mapping table can be formed.
Owing to the luma data of rgb signal becomes corresponding relation, rgb signal with the output voltage of rgb signal
Output voltage become corresponding relation with brightness, then by the regulation luma data of rgb signal and then can regulate
Each grey decision-making in the luma data of the brightness that rgb signal exports on liquid crystal panel, i.e. rgb signal with
The brightness ratio that in rgb signal, R signal, G-signal, B signal are contributed respectively is corresponding.When adjusting according to concrete
After joint demand predetermined luminance mapping table, can first determine that R in the rgb signal matched with the first luma data
The first brightness ratio that signal, G-signal, B signal are contributed respectively, and can according to default brightness mapping table,
Determine the second brightness ratio becoming mapping relations with the first brightness ratio.After determining the second brightness ratio,
And then the second luma data matched with the second brightness ratio can be determined from multiple luma data.
Step S203, switches to the second Gamma reference electricity by the first gamma reference voltage data base currently provided
Pressure data base, red grey decision-making or gal corresponding to green grey decision-making in described second gamma reference voltage data base
Horse reference voltage is red grey decision-making or described green ash more than described in described first gamma reference voltage data base
The gamma reference voltage that rank value is corresponding, in described second gamma reference voltage data base, blue grey decision-making is corresponding
The gamma reference voltage gamma that blue grey decision-making is corresponding less than described in described first gamma reference voltage data base
Reference voltage.
In one embodiment, after determining the second brightness ratio, also can further regulate the second brightness ratio
The reference voltage of example, and then the output brightness of rgb signal can be regulated further.Concrete, when determining the
After two brightness ratios, the first gamma reference voltage data base currently provided can be switched to the second Gamma reference
Data base.Wherein, the red grey decision-making in the second Gamma reference data base or gamma corresponding to green grey decision-making
Reference voltage more than its voltage corresponding in the first Gamma reference data base, and need to be joined the second gamma
Examine the gamma reference voltage that in data base, blue grey decision-making is corresponding and need to be less than it in the first Gamma reference data base
Corresponding voltage.Illustrate, the gamma ginseng that in the first Gamma reference data base, a luma data is corresponding
Examine voltage and be represented by (V1R, V1G, V1B)；Same luma data pair in second Gamma reference data base
The gamma reference voltage answered is represented by (V2R, V2G, V2B), wherein, the first Gamma reference data base with
The relation of the second Gamma reference data base need to meet (V1R>V2R, and V1G>V2G), and V1B>V2B；Or
Person, (V1R>V2R, or V1G>V2G), and V1B>V2B.Wherein, can according to the demand of regulation brightness in advance
Setting up multiple gamma reference voltage data base, multiple gamma reference voltage data bases can prestore in memory,
Gamma reference voltage maker can call the gamma reference voltage data base of correspondence to be supplied to according to regulatory demand
Rgb signal.
Step S204, determines and described second luma data pair in described second gamma reference voltage data base
The gamma reference voltage answered.
In one embodiment, when determining the second luma data, and the second gamma ginseng by above-mentioned steps
After examining voltage data storehouse, can determine, from the second gamma reference voltage data base, the gal that the second luma data is corresponding
Horse reference voltage.Here, the gamma that the second luma data of determining from the second Gamma reference data base is corresponding
The Gamma reference that reference voltage is corresponding compared to the second luma data determined from the first Gamma reference data base
Voltage can improve rgb signal output voltage further, and then promotes the output brightness of rgb signal.
Step S205, the second luma data and described second luma data according to described rgb signal are corresponding
Gamma reference voltage, to liquid crystal panel export described rgb signal output voltage.
In one embodiment, when determining the gamma reference voltage corresponding with the second luma data, and according to
Two luma data and gamma reference voltage corresponding to the second luma data, export above-mentioned RGB to liquid crystal panel
The output voltage of signal.Concrete, gamma reference voltage can be generated by gamma electric voltage producer, when determining
After second luma data, can select corresponding with the second luma data from the gamma reference voltage of above-mentioned generation
Gamma reference voltage.Thus, can be according to Gamma reference corresponding to the second luma data and the second luma data
Voltage, exports the output voltage of this rgb signal to liquid crystal panel, so that liquid crystal panel is according to rgb signal
Output voltage, determine the display brightness of the RGB sub-pixel unit corresponding with this output voltage.
Step S206, if detecting, described rgb signal is expressed as ninsolid color image, believes according to described RGB
Number described first luma data and the gamma reference voltage corresponding with described first luma data, to liquid crystal
Panel exports the output voltage of described rgb signal.
In one embodiment, if detecting in step s 201, rgb signal is expressed as ninsolid color image,
Then without the output voltage of rgb signal is adjusted, then can be directly according to the first GTG of rgb signal
Data and the gamma reference voltage corresponding with this first luma data, to liquid crystal panel output rgb signal
Output voltage.
In the embodiment of the present invention, when receiving rgb signal, by detection rgb signal indicate whether into
Solid-color image, it is determined whether need the luma data of rgb signal is adjusted.When detecting that RGB believes
Number be expressed as solid-color image, then can according to the first luma data of rgb signal and default GTG mapping table,
Obtain the second luma data of the described rgb signal becoming mapping relations with the first luma data, wherein, described
Red grey decision-making R2 in second luma data is respectively greater than described first luma data with green grey decision-making G2
In red grey decision-making R1 and the blue grey decision-making B2 in green grey decision-making G1, and described second luma data
Less than the blue grey decision-making B1 in described first luma data, when adjusting rgb signal by the way
After luma data is the second luma data, can be according to the second luma data of described rgb signal and described
The gamma reference voltage that two luma data are corresponding, exports the output voltage of described rgb signal to liquid crystal panel.
By the way, owing to the R in rgb signal, G-signal are tuned up, then corresponding to liquid crystal panel output
R, the output voltage of G-signal increase, and then the liquid crystal surface including RGBW sub-pixel unit can be improved
The plate brightness when showing pure color picture.
Refer to the knot of an embodiment that Fig. 3, Fig. 3 are the processing meanss of a kind of rgb signal in the present invention
Structure schematic diagram.This processing means comprises the steps that detector unit 301, acquiring unit 302, output unit 303.
Wherein, whether detector unit 301, for when receiving rgb signal, detect described rgb signal
It is expressed as solid-color image；
For described detector unit 301, acquiring unit 302, if detecting that described rgb signal is expressed as pure color
Image, according to the first luma data and the default GTG mapping table of described rgb signal, it is thus achieved that with described
First luma data becomes the second luma data of the described rgb signal of mapping relations, wherein, described second ash
Red grey decision-making R2 in exponent number evidence is red with what green grey decision-making G2 was respectively greater than in described first luma data
Color grey decision-making R1 and the blue grey decision-making B2 in green grey decision-making G1, and described second luma data is less than institute
State the blue grey decision-making B1 in the first luma data；
Output unit 303, for the second luma data according to described rgb signal and described second GTG
The gamma reference voltage that data are corresponding, exports the output voltage of described rgb signal to liquid crystal panel.
In the embodiment of the present invention, detector unit 301, acquiring unit 302, output unit 303 can perform Fig. 1
The method of correlation step in illustrated embodiment.
In the embodiment of the present invention, when receiving rgb signal, by detection rgb signal indicate whether into
Solid-color image, it is determined whether need the luma data of rgb signal is adjusted.When detecting that RGB believes
Number be expressed as solid-color image, then can according to the first luma data of rgb signal and default GTG mapping table,
Obtain the second luma data of the described rgb signal becoming mapping relations with the first luma data, wherein, described
Red grey decision-making R2 in second luma data is respectively greater than described first luma data with green grey decision-making G2
In red grey decision-making R1 and the blue grey decision-making B2 in green grey decision-making G1, and described second luma data
Less than the blue grey decision-making B1 in described first luma data, when adjusting rgb signal by the way
After luma data is the second luma data, can be according to the second luma data of described rgb signal and described
The gamma reference voltage that two luma data are corresponding, exports the output voltage of described rgb signal to liquid crystal panel.
By the way, owing to the R in rgb signal, G-signal are tuned up, then corresponding to liquid crystal panel output
R, the output voltage of G-signal increase, and then the liquid crystal surface including RGBW sub-pixel unit can be improved
The plate brightness when showing pure color picture.
Refer to the knot of an embodiment that Fig. 4, Fig. 4 are the processing meanss of a kind of rgb signal in the present invention
Structure schematic diagram.This processing means comprise the steps that detector unit 401, acquiring unit 402, switch unit 403,
Determine unit the 404, first output unit the 405, second output unit 406.
Wherein, whether detector unit 401, for when receiving rgb signal, detect described rgb signal
It is expressed as solid-color image.
For described detector unit 401, acquiring unit 402, if detecting that described rgb signal is expressed as pure color
Image, according to the first luma data and the default GTG mapping table of described rgb signal, it is thus achieved that with described
First luma data becomes the second luma data of the described rgb signal of mapping relations, wherein, described second ash
Red grey decision-making R2 in exponent number evidence is red with what green grey decision-making G2 was respectively greater than in described first luma data
Color grey decision-making R1 and the blue grey decision-making B2 in green grey decision-making G1, and described second luma data is less than institute
State the blue grey decision-making B1 in the first luma data.
Optionally, acquiring unit 402 comprises the steps that
First determines unit, is used for determining the tribute respectively of R signal in described rgb signal, G-signal, B signal
The brightness ratio offered；
Second determines unit, for according to described brightness ratio, determines and institute from the plurality of luma data
State the second luma data that brightness ratio matches.
Optionally, described first determines that unit is additionally operable to:
Determine that R signal in the described rgb signal matched with described first luma data, G-signal, B believe
Number the first brightness ratio contributed respectively；
According to described first brightness ratio and the brightness mapping table preset, determine to become with described first brightness ratio
Second brightness ratio of mapping relations；
Described second determines that unit is additionally operable to:
According to described second brightness ratio, determine from the plurality of luma data and described second brightness ratio
The second luma data matched.
Switch unit 403, obtains the institute becoming mapping relations with described first luma data for described acquiring unit
After stating the second luma data of rgb signal, the first gamma reference voltage data base switching that will currently provide
It is the second gamma reference voltage data base, red grey decision-making or green in described second gamma reference voltage data base
The gamma reference voltage that color grey decision-making is corresponding is red grey more than described in described first gamma reference voltage data base
The gamma reference voltage that rank are worth or described green grey decision-making is corresponding, in described second gamma reference voltage data base
The gamma reference voltage that blue grey decision-making is corresponding is blue less than described in described first gamma reference voltage data base
The gamma reference voltage that grey decision-making is corresponding.
Determine unit 404, for determining and described second GTG in described second gamma reference voltage data base
The gamma reference voltage that data are corresponding.
First output unit 405, for the second luma data and described second according to described rgb signal
The gamma reference voltage that luma data is corresponding, exports the output voltage of described rgb signal to liquid crystal panel.
For described detector unit 401, second output unit 406, if detecting that described rgb signal is expressed as
Ninsolid color image, according to described first luma data of described rgb signal and with described first luma data
Corresponding gamma reference voltage, exports the output voltage of described rgb signal to liquid crystal panel.
In the embodiment of the present invention, detector unit 401, acquiring unit 402, switch unit 403, determine unit
404, first output unit the 405, second output unit 406 can be used for performing to be correlated with in embodiment illustrated in fig. 2
Method described in step.
In the embodiment of the present invention, when receiving rgb signal, by detection rgb signal indicate whether into
Solid-color image, it is determined whether need the luma data of rgb signal is adjusted.When detecting that RGB believes
Number be expressed as solid-color image, then can according to the first luma data of rgb signal and default GTG mapping table,
Obtain the second luma data of the described rgb signal becoming mapping relations with the first luma data, wherein, described
Red grey decision-making R2 in second luma data is respectively greater than described first luma data with green grey decision-making G2
In red grey decision-making R1 and the blue grey decision-making B2 in green grey decision-making G1, and described second luma data
Less than the blue grey decision-making B1 in described first luma data, when adjusting rgb signal by the way
After luma data is the second luma data, can be according to the second luma data of described rgb signal and described
The gamma reference voltage that two luma data are corresponding, exports the output voltage of described rgb signal to liquid crystal panel.
By the way, owing to the R in rgb signal, G-signal are tuned up, then corresponding to liquid crystal panel output
R, the output voltage of G-signal increase, and then the liquid crystal surface including RGBW sub-pixel unit can be improved
The plate brightness when showing pure color picture.
Refer to the embodiment that Fig. 5, Fig. 5 are the data driving chip of a kind of liquid crystal panel in the present invention
Structural representation.As it is shown in figure 5, this chip can include at pure color picture detecting unit 501 and pure color picture
Reason unit 502.Certainly, this data driving chip may also include system interface, signal processing unit, agitator
Deng GU Generic Unit, the most do not show.
Wherein, pure color picture detecting unit 501 can connect signal processing unit, for detecting at signal
Rgb signal after reason unit indicates whether as solid-color image.
Pure color picture processing unit 502 can connect pure color picture detecting unit 501, for detecting pure color picture
The pure color rgb signal that unit 501 detects processes.Pure color picture processing unit can include at least one
Numeral Mapping unit or at least one LUT table.
Pure color picture detecting unit 501 can perform step S101 in Fig. 1 or step S201 in Fig. 2；
Pure color picture processing unit 502 can perform step S102 in Fig. 1 or step S202 in Fig. 2.
In the embodiment of the present invention, when receiving rgb signal, by detection rgb signal indicate whether into
Solid-color image, it is determined whether need the luma data of rgb signal is adjusted.When detecting that RGB believes
Number be expressed as solid-color image, then can according to the first luma data of rgb signal and default GTG mapping table,
Obtain the second luma data of the described rgb signal becoming mapping relations with the first luma data, wherein, described
Red grey decision-making R2 in second luma data is respectively greater than described first luma data with green grey decision-making G2
In red grey decision-making R1 and the blue grey decision-making B2 in green grey decision-making G1, and described second luma data
Less than the blue grey decision-making B1 in described first luma data, when adjusting rgb signal by the way
After luma data is the second luma data, can be according to the second luma data of described rgb signal and described
The gamma reference voltage that two luma data are corresponding, exports the output voltage of described rgb signal to liquid crystal panel.
By the way, owing to the R in rgb signal, G-signal are tuned up, then corresponding to liquid crystal panel output
R, the output voltage of G-signal increase, and then the liquid crystal surface including RGBW sub-pixel unit can be improved
The plate brightness when showing pure color picture.
It should be noted that for aforesaid each method embodiment, in order to be briefly described, therefore it is all stated
For a series of combination of actions, but those skilled in the art should know, the present invention is not by described
The restriction of sequence of movement, because according to the present invention, some step can use other orders or carry out simultaneously.
Secondly, those skilled in the art also should know, embodiment described in this description belongs to be preferable to carry out
Example, necessary to involved action and the module not necessarily present invention.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, in certain embodiment the most in detail
The part stated, may refer to the associated description of other embodiments.
In several embodiments provided herein, it should be understood that disclosed device, can be passed through it
Its mode realizes.Such as, device embodiment described above is only schematically, the most described list
The division of unit, is only a kind of logic function and divides, and actual can have other dividing mode, example when realizing
As multiple unit or assembly can in conjunction with or be desirably integrated into another system, or some features can be ignored,
Or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can
To be the INDIRECT COUPLING by some interfaces, device or unit or communication connection, can be electrical or other
Form.
The described unit illustrated as separating component can be or may not be physically separate, as
The parts that unit shows can be or may not be physical location, i.e. may be located at a place, or
Can also be distributed on multiple NE.Can select therein some or all of according to the actual needs
Unit realizes the purpose of the present embodiment scheme.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit,
Can also be that unit is individually physically present, it is also possible to two or more unit are integrated in a unit
In.Above-mentioned integrated unit both can realize to use the form of hardware, it would however also be possible to employ SFU software functional unit
Form realizes.
If described integrated unit realizes using the form of SFU software functional unit and as independent production marketing or
During use, can be stored in a computer-readable access to memory.Based on such understanding, the present invention's
Part that prior art is contributed by technical scheme the most in other words or the whole or portion of this technical scheme
Dividing and can embody with the form of software product, this computer software product is stored in a memorizer,
Including some instructions with so that a computer equipment (can be that personal computer, server or network set
Standby etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid memorizer bag
Include: USB flash disk, read only memory (ROM, Read-Only Memory), random access memory (RAM,
Random Access Memory), portable hard drive, magnetic disc or CD etc. are various can store program code
Medium.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment
The program that can be by completes to instruct relevant hardware, and this program can be stored in a computer-readable and deposit
In reservoir, memorizer may include that flash disk, read only memory (English: Read-Only Memory,
Be called for short: ROM), random access device (English: Random Access Memory, RAM), magnetic be called for short:
Dish or CD etc..
Being described in detail the embodiment of the present invention above, specific case used herein is to the present invention's
Principle and embodiment are set forth, and the explanation of above example is only intended to help to understand the side of the present invention
Method and core concept thereof；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention,
All will change in detailed description of the invention and range of application, in sum, this specification content should not be managed
Solve as limitation of the present invention.
Claims (10)
1. the processing method of a rgb signal, it is characterised in that including:
When receiving rgb signal, detect described rgb signal and indicate whether as solid-color image；
If detecting, described rgb signal is expressed as solid-color image, according to the first GTG of described rgb signal
Data and default GTG mapping table, it is thus achieved that with the described RGB that described first luma data becomes mapping relations
Second luma data of signal, wherein, the red grey decision-making R2 in described second luma data and green GTG
The red grey decision-making R1 that value G2 is respectively greater than in described first luma data and green grey decision-making G1, and described
Blue grey decision-making B2 in second luma data is less than the blue grey decision-making B1 in described first luma data；
The second luma data according to described rgb signal and Gamma reference corresponding to described second luma data
Voltage, exports the output voltage of described rgb signal to liquid crystal panel.
2. method as claimed in claim 1, it is characterised in that if existing multiple in described GTG mapping table
Luma data becomes mapping relations, described acquisition and described first luma data Cheng Ying with described first luma data
Penetrate the second luma data of the described rgb signal of relation, including:
Determine the brightness ratio that in described rgb signal, R signal, G-signal, B signal are contributed respectively；
According to described brightness ratio, determine from the plurality of luma data and match with described brightness ratio
Second luma data.
3. as claimed in claim 2 method, it is characterised in that described determine R letter in described rgb signal
Number, the brightness ratio contributed respectively of G-signal, B signal, including:
Determine that R signal in the described rgb signal matched with described first luma data, G-signal, B believe
Number the first brightness ratio contributed respectively；
According to described first brightness ratio and the brightness mapping table preset, determine to become with described first brightness ratio
Second brightness ratio of mapping relations；
Described according to described brightness ratio, determine from the plurality of luma data and described brightness ratio phase
The second luma data joined, including:
According to described second brightness ratio, determine from the plurality of luma data and described second brightness ratio
The second luma data matched.
4. method as described in any one of claim 1-3, it is characterised in that described RGB detected if described
Signal is expressed as solid-color image, and the first luma data and default GTG according to described rgb signal map
Table, it is thus achieved that become second luma data of described rgb signal of mapping relations with described first luma data after,
Described method also includes:
The the first gamma reference voltage data base currently provided is switched to the second gamma reference voltage data base,
Red grey decision-making or gamma reference voltage corresponding to green grey decision-making in described second gamma reference voltage data base
More than described in described first gamma reference voltage data base, red grey decision-making or described green grey decision-making are corresponding
Gamma reference voltage, the Gamma reference electricity that in described second gamma reference voltage data base, blue grey decision-making is corresponding
The pressure gamma reference voltage that blue grey decision-making is corresponding less than described in described first gamma reference voltage data base；
The gamma ginseng corresponding with described second luma data is determined in described second gamma reference voltage data base
Examine voltage.
5. as claimed in claim 4 method, it is characterised in that the described rgb signal of described detection whether table
After being shown as solid-color image, described method also includes:
If detecting, described rgb signal is expressed as ninsolid color image, according to described the of described rgb signal
One luma data and the gamma reference voltage corresponding with described first luma data, export institute to liquid crystal panel
State the output voltage of rgb signal.
6. the processing means of a rgb signal, it is characterised in that including:
Detector unit, for when receiving rgb signal, detects described rgb signal and indicates whether as pure
Color image；
For described detector unit, acquiring unit, if detecting that described rgb signal is expressed as solid-color image, root
The first luma data and default GTG mapping table according to described rgb signal, it is thus achieved that with described first GTG
Data become the second luma data of the described rgb signal of mapping relations, wherein, in described second luma data
Red grey decision-making R2 be respectively greater than the red grey decision-making in described first luma data with green grey decision-making G2
R1 and the blue grey decision-making B2 in green grey decision-making G1, and described second luma data is less than described first ash
Blue grey decision-making B1 in exponent number evidence；
First output unit, for the second luma data according to described rgb signal and described second GTG
The gamma reference voltage that data are corresponding, exports the output voltage of described rgb signal to liquid crystal panel.
7. device as claimed in claim 6, it is characterised in that if existing multiple in described GTG mapping table
Luma data becomes mapping relations, described acquiring unit to include with described first luma data:
First determines unit, is used for determining the tribute respectively of R signal in described rgb signal, G-signal, B signal
The brightness ratio offered；
Second determines unit, for according to described brightness ratio, determines and institute from the plurality of luma data
State the second luma data that brightness ratio matches.
8. device as claimed in claim 7, it is characterised in that described first determines that unit is additionally operable to:
Determine that R signal in the described rgb signal matched with described first luma data, G-signal, B believe
Number the first brightness ratio contributed respectively；
According to described first brightness ratio and the brightness mapping table preset, determine to become with described first brightness ratio
Second brightness ratio of mapping relations；
Described second determines that unit is additionally operable to:
According to described second brightness ratio, determine from the plurality of luma data and described second brightness ratio
The second luma data matched.
9. device as described in any one of claim 6-8, it is characterised in that also include:
Switch unit, obtains to become described in mapping relations with described first luma data for described acquiring unit
After second luma data of rgb signal, the first gamma reference voltage data base currently provided is switched to
Second gamma reference voltage data base, red grey decision-making or green in described second gamma reference voltage data base
The gamma reference voltage that grey decision-making is corresponding is more than red GTG described in described first gamma reference voltage data base
Value or gamma reference voltage corresponding to described green grey decision-making, blue in described second gamma reference voltage data base
The gamma reference voltage that color grey decision-making is corresponding is blue grey less than described in described first gamma reference voltage data base
The gamma reference voltage that rank value is corresponding；
3rd determines unit, for determining in described second gamma reference voltage data base and described second ash
Exponent number is according to corresponding gamma reference voltage.
10. device as claimed in claim 9, it is characterised in that also include:
For described detector unit, second output unit, if detecting that described rgb signal is expressed as ninsolid color figure
Picture, according to described first luma data and the gal corresponding with described first luma data of described rgb signal
Horse reference voltage, exports the output voltage of described rgb signal to liquid crystal panel.
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