WO2016008171A1 - Rgb到rgbw的颜色转换***和方法 - Google Patents
Rgb到rgbw的颜色转换***和方法 Download PDFInfo
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- WO2016008171A1 WO2016008171A1 PCT/CN2014/082970 CN2014082970W WO2016008171A1 WO 2016008171 A1 WO2016008171 A1 WO 2016008171A1 CN 2014082970 W CN2014082970 W CN 2014082970W WO 2016008171 A1 WO2016008171 A1 WO 2016008171A1
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims description 16
- 238000010586 diagram Methods 0.000 description 7
- 239000010409 thin film Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
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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
-
- 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
- G09G3/2003—Display of colours
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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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
- G09G5/04—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 circuits for interfacing with colour displays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/67—Circuits for processing colour signals for matrixing
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/351—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0439—Pixel structures
- G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
-
- 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
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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
-
- 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
- G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/06—Colour space transformation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
Definitions
- the present invention relates to the field of display technologies, and more particularly to a color conversion system and method of RGB to RGBW. Background technique
- RGB sub-pixel units red (R) sub-pixel units, green (G) sub-pixel units, and blue (B) sub-pixel units.
- R red
- G green
- B blue
- the color image is displayed by controlling the gradation data of each sub-pixel unit and mixing the colors that the display panel needs to display.
- various demands for display panels are also increasing. High transmittance, low power consumption, and good image quality have become the demand for display panels.
- the existing RGB three primary color mixed light display mode has a low transmittance and a low mixing efficiency, resulting in a large power consumption of the display panel, which restricts the optimization of the display panel.
- a red (R) sub-pixel unit a green (G) sub-pixel unit, a blue (B) sub-pixel unit, and a fourth sub-pixel unit (for example, a white (W) sub-pixel unit).
- R red
- G green
- B blue
- W white
- a display panel of a four-pixel unit thereby improving the display quality of the RGB display panel.
- the white (W) sub-pixel unit since the white (W) sub-pixel unit is added, the red output value, the green output value, and the blue output value are both reduced, so that the overall brightness of the image remains unchanged while the color remains unchanged. The saturation drops.
- a color conversion system of RGB to RGBW comprising: a linearization component that performs linearization on input RGB values; a comparison component, which is linearized RGB values are compared to obtain maximum and minimum values; a binarization component performs luminance binarization on the linearized RGB values to obtain a luminance binarization value; a gain value determining component, The ratio of the number of pixels corresponding to the brightness binarization value to the total number of pixels in the image is compared with a preset percentage to obtain a gain value; the output value calculation component, The RGBW output value is calculated from the linearized RGB value, the maximum value, the minimum value, the gain value, and the preset percentage.
- the gain value determining unit determines that the number of pixels corresponding to the brightness binarization value accounts for a percentage of the total number of pixels in the image is greater than the predetermined percentage, the gain value determining unit obtains the gain using Equation 1. value:
- K l/M, where K represents the gain value and M represents the preset percentage. Further, if the gain value determining unit determines that the number of pixels corresponding to the brightness binarization value is less than the predetermined percentage of the total number of pixels in the image, the gain value determining unit obtains the expression using Equation 2.
- the output value calculation component includes: a determination component that determines whether the minimum value is greater than or equal to 0; a white output value calculation component that calculates a white output value according to the determination result of the determination component and the gain value; a value calculation component, calculating a red output value according to the linearized R value, the maximum value, the white output value, and the preset percentage; the green output value calculation component, according to the linearized G value, The maximum value, the white output value, and the preset percentage calculate a green output value; a blue output value calculation component, according to the linearized B value, the maximum value, the white output value, and the The preset percentage calculates the blue output value. Further, if the determining means determines that the minimum value is greater than 0, the white output value calculating means calculates the white output value using Equation 3:
- Bo MXBiXWo/ MAX (Ri, Gi, Bi) +Bi-Wo, where Wo represents the white output value, Ro represents the red output value, Go represents the green output value, Bo represents the blue output value, Ri Represents the linearized R value, Gi represents the linearized G value, Bi represents the linearized B value, Wo represents the white output value, and MAX (Ri, Gi, Bi) represents the maximum value , MIN (Ri, Gi, Bi) represents the minimum value, K represents the gain value, and ⁇ represents the preset percentage.
- Another object of the present invention is to provide a color conversion method of RGB to RGBW, comprising: performing linearization on input RGB values; comparing linearized RGB values to obtain the most The large value and the minimum value are subjected to brightness binarization processing on the linearized RGB values to obtain a luminance binarization value; the number of pixels corresponding to the brightness binarization value is a percentage of the total number of pixels in the image The preset percentage is compared to obtain a gain value; the RGBW output value is calculated based on the linearized RGB value, the maximum value, the minimum value, the gain value, and the preset percentage.
- K M, where K represents the gain value and M represents the preset percentage.
- the “calculating the output RGBW value” includes: determining whether the minimum value is greater than or equal to 0; based on the determination result, using the gain value, the linearized RGB value, the maximum value, The white output value and the preset percentage calculate the RGBW output value. Further, if the minimum value is greater than 0, the RGBW output value is calculated using Equation 3, Equation 5, Equation 6, and Equation 7:
- Bo : MX Bi X Wo/ MAX (Ri, Gi, Bi) +Bi-Wo, where Wo represents the white output value, Ro represents the red output value, Go represents the green output value, and Bo represents the blue Output value, Ri represents the linearized R value, Gi represents the linearized G value, Bi represents the linearized B value, Wo represents the white output value, MAX (Ri, Gi, Bi) The maximum value, MIN (Ri, Gi, Bi) represents the minimum value, K represents the gain value, and ⁇ represents the preset percentage.
- the present invention increases the white (W) sub-pixel unit without causing the red output value, the green output value, and the blue output value to decrease, thereby improving the color saturation while maintaining the overall brightness of the image.
- FIG. 3 is a schematic block diagram of an RGB to RGBW color conversion system according to an embodiment of the present invention
- FIG. 4 is an output value calculation component according to an embodiment of the present invention.
- Functional Block Diagram Figure 5 is a flow diagram of a RGB to RGBW color conversion method in accordance with an embodiment of the present invention.
- the display device of the present embodiment may be, for example, a liquid crystal display device (LCD), an organic light emitting diode (OLED) display device, or the like.
- LCD liquid crystal display device
- OLED organic light emitting diode
- 1 is a block diagram of a display device in accordance with an embodiment of the present invention.
- 2 is a structural view of a display panel in accordance with an embodiment of the present invention. Referring to FIGS.
- a display device includes: a display panel 1, a scan driver 2, a data driver 3, and an RGB to RGBW color conversion system 4.
- the display panel 1 includes: scanning lines G1 to Gm extending in the row direction (where m is a natural number) and data lines S1 to Sn extending in the column direction (where n is a natural number).
- the scan lines G1 to Gm are both connected to the scan driver 2, and the data lines S1 to Sn are both connected to the data driver 3.
- Sub-pixel Lij (red (R) sub-pixel, green (G) sub-pixel, blue (B) sub-pixel, or white (W) sub-pixel) is set by scan line Gi, Gi+1 (where i is 1 to m) and the data line Sj, Sj+1 (where j is 1 to n) are defined in the area, where one red (R) sub-pixel, one green (G) sub-pixel, one blue (B) sub- A pixel and a white (W) sub-pixel constitute one pixel.
- a thin film transistor (TFT) Qij is disposed in the vicinity of each intersection of the scanning line Gi and the data line Sj.
- the scan line Gi is connected to the gate of the thin film transistor Qij
- the data line Sj is connected to the source of the thin film transistor Qij
- the sub-pixel Lij red (R) sub-pixel, green (G) sub-pixel, blue (B) sub-pixel
- the pixel electrode of the white (W) sub-pixel is connected to the drain of the thin film transistor Qij.
- the common electrode opposite to the pixel electrode of the sub-pixel Lij is connected to a common voltage circuit (not shown).
- the scan driver 2 and the data driver 3 are disposed around the display panel 1.
- the color conversion system 4 converts the input RGB values into the output RGBW values (i.e., RGBW output values) and supplies them to the data driver 3.
- the input RGB value can be provided by, for example, an external host or a graphics controller (not shown).
- the data driver 3 receives and processes the RGBW values of the outputs of the color conversion system 4 from RGB to RGBW to generate analog type data signals and supplies them to the data lines S1 to Sn.
- the scan driver 2 sequentially supplies a plurality of scan signals to the scan lines G1 to Gm.
- 3 is a functional block diagram of a RGB to RGBW color conversion system in accordance with an embodiment of the present invention.
- an RGB to RGBW color conversion system 4 includes: a linearization section 41, a comparison section 42, a binarization section 43, a gain value determination section 44, and an output value calculation section 45.
- the linearization section 41 performs linearization on the input RGB values.
- the linearization component 41 linearizes the input RGB values before the comparison component 42 determines the maximum and minimum values of the RGB values.
- Linearization of the input RGB values may represent a process of converting the input RGB values into values that are linearly proportional to the output brightness.
- the linearization section 41 supplies the linearized RGB values to the comparison section 42, the binarization section 43, and the output value calculation section 45.
- Comparison component 42 receives the linearized RGB values provided by linearization component 41 and compares the received linearized RGB values to determine the maximum and minimum values.
- the maximum value is the maximum value of the linearized RGB value and is expressed as MAX (Ri, Gi, Bi), where Ri represents the linearized R value and Gi represents the linearized G value, Bi Represents the linearized B value.
- the minimum value is the minimum value of the linearized RGB values and is expressed as MIN(Ri, Gi, Bi).
- the comparison section 42 supplies the maximum value MAX (Ri, Gi, Bi) and the minimum value MIN (Ri, Gi, Bi) to the output value calculation section 45.
- the binarization section 43 receives the linearized RGB values supplied from the linearization section 41, and performs binarization processing of the luminance on the received linearized RGB values to obtain a luminance binarization value Li.
- the binarization unit performs binarization processing of the luminance on the received linearized RGB values in the following Equation 1.
- [Formula 1] Li 0.299 X Ri+0.587 X Gi+0.114
- the X Bi binarization section 43 supplies the obtained luminance binarization value Li to the gain value determining section 44.
- the gain value determining section 44 receives the luminance binarization value Li supplied from the binarization section 43 and determines the number of pixels corresponding to the luminance binarization value Li in the luminance histogram based on the received luminance binarization value Li.
- the percentage, and the percentage of the determined number of pixels corresponding to the luminance binarization value Li to the total number of pixels in the image is compared with the built-in preset percentage M to determine the gain value.
- the output value calculation section 45 receives the linearized RGB values supplied from the linearization section 41, the maximum value MAX (Ri, Gi, Bi) and the minimum value MIN (Ri, Gi, Bi) determined by the comparison section 42, The gain value K determined by the gain value determining unit 44 and the preset percentage M supplied from the gain value determining unit 44 are determined by the comparing unit 42 based on the received linearized RGB values supplied from the linearizing unit 41.
- the maximum value MAX (Ri, Gi, Bi) and the minimum value MIN (Ri, Gi, Bi), the gain value K determined by the gain value determining unit 44 and the preset percentage M supplied from the gain value determining unit 44 calculate the required output.
- an output value calculation section 45 includes a determination section 451, a white output value calculation section 452, a red output value calculation section 453, a green output value calculation section 454, and a blue output value calculation section 455. .
- the judging section 451 receives the minimum value MIN (Ri, Gi, Bi) determined by the comparing section 42, and judges whether the received minimum value MIN (Ri, Gi, Bi) is greater than or equal to zero. Judging component 451 will judge The broken structure is supplied to a white output value calculation section 452, a red output value calculation section 453, a green output value calculation section 454, and a blue output value calculation section 455.
- the white output value calculation section 452 receives the determination result supplied from the determination section 451, the gain value K determined by the gain value determination section 44, and calculates a white output value (i.e., W output value) based on the received judgment result and the gain value ⁇ . .
- the white output value calculating section 452 calculates a white output value according to the following formula 2.
- Wo KX [MIN (Ri, Gi, Bi) ] 2 where Wo represents the white output value. If the judging section 451 judges that the minimum value MIN (Ri, Gi, Bi) is equal to 0, the white output value calculating section 452 calculates a white output value according to the following formula 3.
- the white output value calculation section 452 supplies the calculated white output value to the red output value calculation section 453, the green output value calculation section 454, and the blue output value calculation section 455.
- the red output value calculation section 453 receives the linearized R value supplied from the linearization section 41, the maximum value MAX (Ri, Gi, Bi) determined by the comparison section 42, and the white output supplied from the white output value calculation section 452.
- the green output value calculation section 454 receives the linearized G value supplied from the linearization section 41, the maximum value MAX (Ri, Gi, Bi) determined by the comparison section 42, and the white output supplied from the white output value calculation section 452.
- the value and the built-in preset percentage M provided by the gain value determining unit 44, and the maximum value MAX determined by the comparing unit 42 based on the received linearized G value supplied by the linearizing unit 41 (Ri, Gi , Bi), the white output value supplied from the white output value calculating unit 452 and the built-in preset percentage M supplied from the gain value determining unit 44 calculate the green output value.
- the green output value calculation section 454 calculates a green output value (i.e., a G output value) according to Equation 5 below.
- Go M X Gi X Wo/ MAX (Ri, Gi, Bi) +G1-W0 where Go represents the green output value.
- the blue output value calculation section 455 receives the linearized B value supplied from the linearization section 41, the maximum value MAX (Ri, Gi, Bi) determined by the comparison section 42, and the white color supplied from the white output value calculation section 452.
- the blue output value calculating unit 455 calculates the blue output value (i.e., the B output value) according to the following equation 6.
- FIG. 5 is a flowchart of a color conversion method of RGB to RGBW according to an embodiment of the present invention.
- the linearization section 41 performs linearization on the input RGB values.
- the linearization section 41 determines the maximum and minimum values among the RGB values at the comparison section 42.
- the input RGB values were previously linearized. Linearization of the input RGB values may represent a process of converting the input RGB values into values that are linearly proportional to the output brightness.
- comparison component 42 compares the linearized RGB values to determine the maximum and minimum values.
- the maximum value is the maximum value of the linearized RGB value and is expressed as MAX (Ri, Gi, Bi), where Ri represents the linearized R value and Gi represents the linearized G value, Bi Represents the linearized B value.
- the minimum value is the minimum value of the linearized RGB values and is expressed as MIN (Ri, Gi, Bi).
- the binarization unit 43 performs binarization processing of the luminance on the linearized RGB values to obtain a luminance binarization value Li.
- the binarization unit 43 performs binarization processing of the luminance on the linearized RGB values by the above formula 1.
- the output value calculation section 45 calculates the linearized RGB value, the maximum value MAX (Ri, Gi, Bi), the minimum value MIN (Ri, Gi, Bi), the gain value K, and the preset percentage M.
- the RGBW output value which includes the red (R) output value, the green (G) output value, the blue (B) output value, and the white (W) output value.
- operation 502 and operation 503 may be performed interchangeably, or operation 502 and operation 503 may be performed simultaneously.
- the RGBW output values can be calculated in various manners as described in operations 5051 through 5053 of FIG.
- the determining component 451 determines that the minimum value MIN (Ri, Gi, Bi) is greater than Is equal to 0.
- the RGBW output value is calculated by using the gain value, the linearized RGB value, the maximum value, the white output value, and the preset percentage.
- the white output value calculation section 452 calculates a white output value based on the above formula 2
- the red output value calculation section 453 calculates a red output value according to the above formula 4.
- the green output value calculating unit 454 calculates the green output value based on the above formula 5, and the blue output value calculating unit 455 calculates the blue output value based on the above equation 6. If the judging section 451 judges that the minimum value MIN (Ri, Gi, Bi) is equal to 0, the white output value calculating section 452 calculates a white output value according to the above formula 3, and the red output value calculating section 453 calculates according to the above formula 4. The red output value is calculated, the green output value calculating unit 454 calculates the green output value based on the above formula 5, and the blue output value calculating unit 455 calculates the blue output value based on the above equation 6.
- the red output value, the green output value, and the blue output value are not reduced, so that the overall brightness of the image remains unchanged. At the same time, improve color saturation.
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- Chemical & Material Sciences (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Processing Of Color Television Signals (AREA)
- Control Of El Displays (AREA)
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Abstract
Description
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2017502207A JP6373479B2 (ja) | 2014-07-17 | 2014-07-25 | Rgbからrgbwへの色変換システムと方法 |
KR1020177004073A KR101919720B1 (ko) | 2014-07-17 | 2014-07-25 | Rgb 에서 rgbw 로의 색상 전환 시스템 및 방법 |
US14/385,992 US9520103B2 (en) | 2014-07-17 | 2014-07-25 | RGB-to-RGBW color converting system and method |
GB1700359.1A GB2541857B (en) | 2014-07-17 | 2014-07-25 | RGB-to-RGBW color converting system and method |
RU2017101137A RU2647623C1 (ru) | 2014-07-17 | 2014-07-25 | Система и способ преобразования цвета rgb в rgbw |
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CN201410342607.8 | 2014-07-17 | ||
CN201410342607.8A CN104077997B (zh) | 2014-07-17 | 2014-07-17 | Rgb到rgbw的颜色转换***和方法 |
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US (1) | US9520103B2 (zh) |
JP (1) | JP6373479B2 (zh) |
KR (1) | KR101919720B1 (zh) |
CN (1) | CN104077997B (zh) |
GB (1) | GB2541857B (zh) |
RU (1) | RU2647623C1 (zh) |
WO (1) | WO2016008171A1 (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109686337A (zh) * | 2019-02-27 | 2019-04-26 | 惠科股份有限公司 | 像素信号转换方法及装置 |
CN109686339A (zh) * | 2019-02-27 | 2019-04-26 | 惠科股份有限公司 | 像素信号转换方法及装置 |
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CN109285515B (zh) * | 2018-11-07 | 2020-07-10 | 惠科股份有限公司 | 像素信号转换方法及装置 |
CN109215602B (zh) | 2018-11-07 | 2020-07-10 | 惠科股份有限公司 | 像素信号转换方法及装置 |
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CN104077997A (zh) | 2014-10-01 |
GB2541857B (en) | 2020-06-17 |
GB201700359D0 (en) | 2017-02-22 |
JP2017528746A (ja) | 2017-09-28 |
US20160267874A1 (en) | 2016-09-15 |
RU2647623C1 (ru) | 2018-03-16 |
CN104077997B (zh) | 2016-10-12 |
US9520103B2 (en) | 2016-12-13 |
KR20170031742A (ko) | 2017-03-21 |
KR101919720B1 (ko) | 2018-11-16 |
JP6373479B2 (ja) | 2018-08-15 |
GB2541857A (en) | 2017-03-01 |
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