WO2019183796A1 - Procédé de conversion de couleur primaire et dispositif électronique - Google Patents

Procédé de conversion de couleur primaire et dispositif électronique Download PDF

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Publication number
WO2019183796A1
WO2019183796A1 PCT/CN2018/080672 CN2018080672W WO2019183796A1 WO 2019183796 A1 WO2019183796 A1 WO 2019183796A1 CN 2018080672 W CN2018080672 W CN 2018080672W WO 2019183796 A1 WO2019183796 A1 WO 2019183796A1
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Prior art keywords
pixel
sub
value
subpixel
grayscale
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PCT/CN2018/080672
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English (en)
Chinese (zh)
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张秀峰
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华为技术有限公司
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Priority to PCT/CN2018/080672 priority Critical patent/WO2019183796A1/fr
Priority to CN201880084741.9A priority patent/CN111527540B/zh
Publication of WO2019183796A1 publication Critical patent/WO2019183796A1/fr

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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

Definitions

  • the present application relates to the field of image display, and in particular, to a primary color conversion method and an electronic device.
  • RGBW The RGBW technology adds W sub-pixels to RGB.
  • the W sub-pixels can be regarded as white sub-pixels.
  • the brightness of the backlight can be reduced and the power consumption is lower.
  • RGB is converted into RGBW by three steps: first, one of the three-scale amplification ratio is selected to amplify the grayscale value of each sub-pixel of the pixel by ⁇ times, and then the minimum grayscale value after amplification is reduced by half to be allocated to W sub-pixels, the grayscale values of the remaining sub-pixels are correspondingly reduced by half of the minimum gray-scale value, followed by Content Adaptive Backlight Control (CABC), which increases the current maximum grayscale value to 255, and the rest After the grayscale value of the pixel is increased in proportion, RGBW is obtained.
  • CABC Content Adaptive Backlight Control
  • the embodiment of the invention provides a primary color conversion method and an electronic device, which can reduce the brightness of the backlight to a minimum when the display screen displays the same brightness, thereby greatly improving the energy saving effect.
  • a primary color conversion method comprising:
  • the first pixel can also be converted into the second pixel according to the gray scale gain G.
  • the first pixel is composed of at least one of the first sub-pixel, the second sub-pixel, and the third sub-pixel
  • the second pixel is composed of at least one of the first sub-pixel, the second sub-pixel, and the third sub-pixel, and the fourth sub-pixel Pixel composition.
  • N is the maximum value of the grayscale value of the pixel, such as: 255; k is the multiple of the transmittance of the fourth subpixel to the composite white of the first subpixel, the second subpixel, and the third subpixel, h max is the largest gray scale value among the gray scale values of the first subpixel, the second subpixel, and the third subpixel of the first pixel, and h min is the first subpixel, the second subpixel, and the first pixel of the first pixel The smallest grayscale value among the grayscale values of the three subpixels.
  • the gray scale gain G of the first pixel is first determined, and the first pixel is further converted into the second pixel according to the gray scale gain G. It can be seen that the embodiment of the present invention can realize the conversion from RGB to RGBW in one step according to the gray-scale gain G. Compared with the prior art, it is required to increase the grayscale value of the pixel twice to realize the conversion of RGB to RGBW.
  • the method provided by the embodiment of the invention can reduce the processing load of the display driving circuit of the electronic device.
  • the grayscale value of each sub-pixel satisfies the following condition: the actual grayscale value of the W sub-pixel is w ⁇ 255, and the sub-pixel with the smallest grayscale value in RGB is assigned to the grayscale value of the W sub-pixel. k*w ⁇ G*h min , and the gray scale value (G*h max -k*w) ⁇ 255 remaining after the sub-pixel with the largest gray scale value in RGB is assigned to the gray value of the W sub-pixel.
  • the equations of inequality can obtain gray-scale gain
  • the pixel gray scale gain G is the maximum gain of the sub-pixel gray scale in the RGB to RGBW conversion scene, so when the screen displays the same brightness screen, the CABC can minimize the brightness of the backlight, thereby greatly improving Energy saving effect.
  • k is the ratio of the luminance after the composite white is transmitted through the liquid crystal and the luminance after the fourth sub-pixel is transmitted through the liquid crystal under the same backlight condition.
  • converting the first pixel into the second pixel according to the gray-scale gain specifically includes: transducing the grayscale value s that is less than or equal to h min *G
  • the over-rate loss process obtains s/k, and determines s/k as the gray-scale value of the fourth sub-pixel of the second pixel, s/k is less than or equal to N; and h min *Gs is used as the sub-h min corresponding to the second pixel gray level values of the pixels; the product of the first sub-pixel in addition to sub-pixel h min corresponding to a pixel grayscale value by subtracting the G value s obtained, in addition to the second pixel corresponding to a sub-pixel h min and The grayscale value of the subpixel outside the fourth subpixel.
  • the gray-scale value of the sub-pixel can be adjusted according to the gray-scale gain G, and then the gray-scale value is allocated according to the adjusted gray-scale value. For example, a part of the grayscale value of the sub-pixel with the smallest grayscale value is assigned to the W sub-pixel, and the grayscale values of the remaining sub-pixels are correspondingly reduced.
  • the specific implementation manner of converting the pixel from the RGB color gamut to the RGBW color gamut according to the gray-scale gain is not limited thereto, and the conversion of RGB to RGBW can be realized in one step according to a specific function, specifically, the RGB value and the gray scale of the pixel.
  • the gain G is used as the input of the function, and the output of the function is the RGBW value, that is, the gray scale values of the R sub-pixel, the G sub-pixel, the B sub-pixel, and the W sub-pixel.
  • the gray scale values of the R sub-pixel, the G sub-pixel, the B sub-pixel, and the W sub-pixel are all Cannot exceed the upper limit of the pixel grayscale value.
  • the first sub-pixel is a red sub-pixel
  • the second sub-pixel is a green sub-
  • the third sub-pixel is a blue sub-pixel
  • the fourth sub-pixel is a white sub-pixel.
  • the method provided by the embodiment of the present invention can be used to convert a pixel in the RGB color gamut into a pixel in the RGBW color gamut.
  • the gray scale gain is 0 when converted to the RGBW color gamut, that is, the gray scale values of the converted R sub-pixel, the G sub-pixel, the B sub-pixel, and the W sub-pixel are all 0. .
  • an electronic device comprising:
  • a processing unit configured to determine a pixel grayscale gain G of the first pixel, a grayscale gain The processing unit is further configured to convert the first pixel into the second pixel according to the gray-scale gain G; the first pixel is configured by at least one of the first sub-pixel, the second sub-pixel, and the third sub-pixel, and the second pixel is configured by At least one of a sub-pixel, a second sub-pixel, and a third sub-pixel and a fourth sub-pixel are formed.
  • N is the maximum value of the grayscale value of the pixel
  • k is the multiple of the transmittance of the fourth subpixel to the composite white of the first subpixel, the second subpixel, and the third subpixel
  • hmax is the first pixel The largest gray scale value among the gray scale values of one sub-pixel, the second sub-pixel, and the third sub-pixel
  • h min is the gray scale value of the first sub-pixel, the second sub-pixel, and the third sub-pixel of the first pixel The smallest grayscale value.
  • the electronic device provided by the embodiment of the present invention first determines the grayscale gain G of the first pixel, and further converts the first pixel into the second pixel according to the grayscale gain G. It can be seen that the electronic device provided by the embodiment of the present invention can realize the conversion from RGB to RGBW in one step according to the gray-scale gain G. Compared with the prior art, it is required to increase the grayscale value of the pixel twice to realize the conversion of RGB to RGBW. The electronic device provided by the embodiment of the invention can reduce the processing load of the display driving circuit of the electronic device.
  • the grayscale value of each sub-pixel satisfies the following condition: the actual grayscale value of the W sub-pixel is w ⁇ 255, and the sub-pixel with the smallest grayscale value in RGB is assigned to the grayscale value of the W sub-pixel. k*w ⁇ G*h min , and the gray scale value (G*h max -k*w) ⁇ 255 remaining after the sub-pixel with the largest gray scale value in RGB is assigned to the gray value of the W sub-pixel.
  • the equations of inequality can obtain gray-scale gain
  • the pixel gray scale gain G is the maximum gain of the sub-pixel gray scale in the RGB to RGBW conversion scene, so when the screen displays the same brightness screen, the CABC can minimize the brightness of the backlight, thereby greatly improving Energy saving effect.
  • k is the ratio of the luminance after the composite white is transmitted through the liquid crystal and the luminance after the fourth sub-pixel is transmitted through the liquid crystal under the same backlight condition.
  • the processing unit is specifically configured to perform a loss processing of the grayscale value s less than or equal to h min *G to obtain s/k, s / k is determined as the gray scale value of the fourth sub-pixel of the second pixel, s / k is less than or equal to N; h min * Gs is used as the gray scale value of the sub-pixel corresponding to h min in the second pixel; The value obtained by subtracting s from the product of the gray scale value of the sub-pixels other than the sub-pixel corresponding to h min minus the s, as the gray color of the sub-pixel corresponding to h min and the sub-pixel other than the fourth sub-pixel in the second pixel Order value.
  • the first sub-pixel of the grayscale value other than sub-pixel corresponding to h min obtained by subtracting s The value does not exceed N.
  • the first sub-pixel is a red sub-pixel
  • the second sub-pixel is a green sub-
  • the third sub-pixel is a blue sub-pixel
  • the fourth sub-pixel is a white sub-pixel.
  • 1 is a schematic diagram of a prior art JDI algorithm
  • FIG. 2 is a schematic diagram of optimizing a result of a JDI algorithm according to an embodiment of the present invention
  • FIG. 3 is a structural block diagram of an electronic device according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart diagram of a primary color conversion method according to an embodiment of the present invention.
  • FIG. 5 is a comparison diagram of effects of a primary color conversion method and a JDI algorithm according to an embodiment of the present invention
  • FIG. 6 is a comparison diagram of another effect of the primary color conversion method and the JDI algorithm according to an embodiment of the present invention.
  • FIG. 7 is a comparison diagram of another effect of the primary color conversion method and the JDI algorithm according to an embodiment of the present invention.
  • FIG. 8 is a block diagram of another structure of an electronic device according to an embodiment of the present invention.
  • FIG. 9 is a block diagram of another structure of an electronic device according to an embodiment of the present invention.
  • first and second in the embodiments of the present invention are used for descriptive purposes only, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • the display can display images in RGB color standard, and RGB represents the colors of red, green, and blue channels, respectively, through red (R), green (G), and blue (B).
  • RGB represents the colors of red, green, and blue channels, respectively, through red (R), green (G), and blue (B).
  • R red
  • G green
  • B blue
  • a picture consists of a number of pixels, each of which is composed of three sub-pixels of R, G, and B mixed in different proportions, and can be represented by a set of RGB values.
  • RGB has 256 levels of gray scale (which can be understood as brightness), and is represented by numbers from 0, 1, 2, ..., 255.
  • the RGBW technology adds W sub-pixels to RGB.
  • the W sub-pixels can be regarded as white sub-pixels.
  • the existing JDI algorithm performs the conversion of the RGB color gamut to the RGBW color gamut in three steps, that is, the pixel is converted from RGB to RGBW.
  • the gradation values of the R sub-pixel, the G sub-pixel, and the B sub-pixel are respectively amplified by ⁇ times to obtain r', g', and b'.
  • the preset ratio ⁇ has three optional values, such as: 1.2, 1.5, and 1.8.
  • the actual gray scale value of the W sub-pixel is not due to the multiple of the transmittance of the W sub-pixel to the RGB composite white Half of the smallest grayscale value of r', g', b'.
  • the grayscale values of the remaining subpixels are correspondingly subtracted from the grayscale values assigned to the W subpixels. For example, suppose b' is the smallest of r', g', and b', then the grayscale value of the W sub-pixel after step (2) is b'/2/k, where k is a W sub-pixel pair RGB composite White transmittance multiple.
  • the grayscale value of the R sub-pixel is r'-b'/2
  • the grayscale value of the G sub-pixel is g'-b'/2
  • the grayscale value of the B sub-pixel is b'/2.
  • CABC Content Adaptive Backlight Control
  • the grayscale value of the G sub-pixel is the largest, such as: 180.
  • the grayscale value of the G sub-pixel can be increased from 180 to 255, and the gain is 255/180.
  • the gray scale values of the R sub-pixel, the B sub-pixel, and the W sub-pixel are also enlarged by 255/180 times.
  • the gray scale values of the three sub-pixels of R, G, and B are increased in proportion, the color tone of the pixel is unchanged, but the brightness is increased.
  • the brightness of the backlight of the display can be adjusted to achieve energy saving.
  • the backlight can be reduced to 1/G, where G is the gain of the sub-pixel grayscale value. That is to say, the greater the gain of the sub-pixel gray scale value in the process of RGB to RGBW, the better the energy saving effect.
  • the RGBW obtained in the prior art can still be optimized, and finally the gray scale values of the four sub-pixels of R, G, B, and W do not exceed 255.
  • the grayscale value of the RGBW obtained in the step (3) is increased in proportion, the grayscale value of the G subpixel exceeds 255, and a part of the grayscale value of the B subpixel is further divided into the W subpixel.
  • the grayscale value of the W sub-pixel and the G sub-pixel reaches 255, and the grayscale value of the R sub-pixel and the B sub-pixel does not reach 255, compared with the step of FIG. 1 ( 3)
  • the gray scale value of the W sub-pixel is improved.
  • An embodiment of the present invention provides a primary color conversion method, which determines a grayscale gain G, and converts a first pixel into a second pixel according to the grayscale gain G.
  • the first pixel is composed of at least one of the first sub-pixel, the second sub-pixel, and the third sub-pixel, and the second pixel is at least one of the first sub-pixel, the second sub-pixel, and the third sub-pixel Four sub-pixels are formed. It can be seen that the embodiment of the present invention can realize the conversion from RGB to RGBW in one step according to the gray-scale gain G.
  • the gray scale gain in the embodiment of the present invention is a maximum value of the grayscale value of the pixel
  • k is a multiple of the transmittance of the fourth subpixel to the composite white of the first subpixel, the second subpixel, and the third subpixel
  • hmax is the first pixel
  • h min is the gray scale of the first sub-pixel, the second sub-pixel, and the third sub-pixel of the first pixel The smallest grayscale value in the value.
  • the grayscale value of each sub-pixel satisfies the following condition: the actual grayscale value of the W sub-pixel is w ⁇ 255, and the sub-pixel with the smallest grayscale value in RGB is assigned to the grayscale value of the W sub-pixel. k*w ⁇ G*h min , and the gray scale value (G*h max -k*w) ⁇ 255 remaining after the sub-pixel with the largest gray scale value in RGB is assigned to the gray value of the W sub-pixel.
  • the equations of inequality can obtain gray-scale gain
  • the pixel gray scale gain G is the maximum gain of the sub-pixel gray scale in the RGB to RGBW conversion scene, so when the screen displays the same brightness screen, the CABC can minimize the brightness of the backlight, thereby greatly improving Energy saving effect.
  • k is the ratio of the brightness of the fourth sub-pixel after passing through the liquid crystal and the brightness of the composite white after passing through the liquid crystal under the same backlight condition.
  • the primary color conversion method provided by the embodiment of the present invention can be applied to an electronic device.
  • the electronic device includes a display screen 10, a central processing unit (CPU) 11, a communication interface 12, and a memory 13. .
  • the display unit 10, the CPU 11, the communication interface 12, and the memory 13 are connected to each other and can communicate with each other.
  • the display screen 10 includes a drive circuit 101.
  • the structure of the electronic device shown in FIG. 3 is not a limitation on the electronic device, and may include more components than the illustrated ones, or combine some components, or different component arrangements.
  • the CPU 11 is a control center of the electronic device, and can perform various functions of the electronic device by running or executing a software program stored in the memory 13, and calling data stored in the memory 13.
  • the communication interface 12 described above uses devices such as any transceiver for communicating with other communication devices.
  • the memory 13 can be used to store program code and data, and can be a read-only memory (ROM), or other types of static storage devices that can store static information and instructions, and a random access memory (RAM). Or other types of dynamic storage devices that can store information and instructions, or can be electrically erasable programmable read-only memory (EEPROM), CD-ROM (Compact Disc Read-Only Memory, CD- ROM) or other optical disc storage, magnetic storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of an instruction or data structure and that can be accessed by a computer, but is not limited thereto.
  • ROM read-only memory
  • RAM random access memory
  • EEPROM electrically erasable programmable read-only memory
  • CD-ROM Compact Disc Read-Only Memory
  • magnetic storage medium or other magnetic storage device or any other medium that can be used to carry or store desired program code in the form of an instruction or data structure and that can be accessed by a computer, but is not limited
  • the driving circuit 101 can calculate the gray-scale gain G according to the RGB value of the pixel, and further, the driving circuit 101 can further determine the RGB value of the pixel and the gray-scale gain G. Converting the pixel into one pixel of the RGBW color gamut, that is, calculating the grayscale value of the R subpixel included in the pixel in the RGBW color gamut, the grayscale value of the G subpixel, the grayscale value of the B subpixel, and the W subpixel Grayscale value. Of course, the position of each pixel before and after conversion in the display is unchanged.
  • An embodiment of the present invention provides a primary color conversion method. As shown in FIG. 4, the method includes the following steps:
  • the driving circuit of the electronic device display screen may be used for each RGB color gamut pixel included in the display image (ie, according to the embodiment of the present invention).
  • the first pixel is processed to convert the pixel into one pixel of the RGBW color gamut (ie, the second pixel described in the embodiment of the present invention), and the positions of the first pixel and the second pixel on the display screen of the electronic device are identical.
  • the driving circuit of the display screen of the electronic device may determine the grayscale gain G by the grayscale value of each sub-pixel of the first pixel, so as to convert one pixel of the RGB color gamut into a pixel by using the grayscale gain G in a subsequent step.
  • the grayscale values of the respective subpixels satisfy the following three inequalities: w ⁇ 255 (1)
  • w represents the grayscale value of the W sub-pixel after RGW to RGBW
  • k represents the transmittance multiple of the W sub-pixel to RGB composite white, and for a particular type of Panel, k is constant.
  • h max MAX(R, G, B), which is the maximum of the three gray scale values of the three sub-pixels of the first pixel;
  • h min MIN(R, G, B), ie the three sub-pixels The smallest of the three grayscale values of the pixel.
  • inequality (2) is as follows: When one pixel is from the RGB color gamut to the RGBW color gamut, the gray value of the pixel R sub-pixel, G sub-pixel, and B sub-pixel is first increased according to a certain ratio (eg, The gray-scale gain G) described in the embodiment of the invention may then be separated from the gray-scale value (ie, G*h min ) of the minimum gray-scale value gain of the first pixel as the gray-scale value of the W sub-pixel.
  • a certain ratio eg, The gray-scale gain G
  • G*h min the gray-scale value of the minimum gray-scale value gain of the first pixel
  • the first pixel may be considered to be composed of at least one of a first sub-pixel, a second sub-pixel, and a third sub-pixel, the second pixel being the first sub-pixel, the first The second sub-pixel, at least one of the third sub-pixels, and the fourth sub-pixel are configured.
  • the first sub-pixel is a red sub-pixel
  • the second sub-pixel is a green sub-pixel
  • the third sub-pixel is a blue sub-pixel
  • the fourth sub-pixel is a white sub-pixel.
  • N is the maximum value of the grayscale value of the pixel in step 401.
  • N is the maximum value of 255 of the gray value of the R sub-pixel, the G sub-pixel, and the B sub-pixel.
  • k is a multiple of the transmittance of the fourth sub-pixel to the composite white of the first sub-pixel, the second sub-pixel, and the third sub-pixel
  • h max is the first sub-pixel pixel, the second sub-pixel and the third sub-pixel grayscale values in the maximum gray level
  • h min is the first sub-pixel of the first pixel, the second sub-pixel and the third sub-pixel grayscale values The smallest grayscale value.
  • the driving circuit of the display screen of the electronic device first determines the grayscale value of the grayscale value gain of each subpixel of the first pixel according to the grayscale value of each subpixel of the first pixel and the grayscale gain G determined in step 401. value. Subsequently, the grayscale values of the respective sub-pixels of the second pixel may be determined according to the following three rules:
  • the h min *Gs is used as the grayscale value of the sub-pixel corresponding to h min in the second pixel.
  • the driving circuit of the display screen of the electronic device may also input the gray scale gain and the gray scale value of each sub-pixel of the first pixel as the most specific function, and the output of the function is the sub-pixel of the second pixel.
  • the gray scale value determines the result of RGW to RGBW in one step.
  • the minimum value among the grayscale values of the three sub-pixels of R, G, and B of the pixel is the grayscale value 20 of the B sub-pixel, and thus is converted into the RGBW color.
  • the maximum grayscale value ie, the grayscale value 108 of the R subpixel
  • the gain is 255/108
  • the grayscale values of the B subpixel, the W subpixel, and the G subpixel are also increased respectively. Large 255/108 times.
  • the pixel is converted into one pixel of the RGBW color gamut.
  • the gray-scale gain is provided according to the method provided by the embodiment of the present invention.
  • the method provided by the embodiment of the present invention can save backlight power consumption more than the prior art, and the energy saving effect is better.
  • the grayscale values of the two sub-pixels of the R and G of the pixel are increased by 1.2 times, that is, the grayscale value of the R sub-pixel is changed to 96, the G sub- The grayscale value of the pixel becomes 120.
  • the grayscale value of the B sub-pixel and the grayscale value of the W sub-pixel are both zero.
  • the maximum grayscale value ie, the grayscale value of the G subpixel 120
  • the gain is 255/120
  • the grayscale value of the R subpixel is also increased by 255/120 times.
  • the pixel is converted into one pixel of the RGBW color gamut.
  • the backlight brightness of the display can be reduced to the original 1/2.55.
  • the method according to the embodiment of the present invention provides gray scale gain.
  • the method provided by the embodiment of the present invention can reduce the backlight power consumption when the RGW is converted into the RGBW, and the method provided by the embodiment of the present invention can realize the conversion of the RGW to the RGBW according to the gray-scale gain G, thereby reducing the display screen.
  • the processing load of the drive circuit can reduce the backlight power consumption when the RGW is converted into the RGBW, and the method provided by the embodiment of the present invention can realize the conversion of the RGW to the RGBW according to the gray-scale gain G, thereby reducing the display screen.
  • the grayscale values of the three sub-pixels of the R, G, and B pixels of the pixel are multiplied by the grayscale values of the three sub-pixels of the preset ratio ⁇ , R, G, and B. Both become 120.
  • the gray scale value of any one of the three sub-pixels R, G, and B is assigned to the W sub-pixel, such as a B sub-pixel.
  • the maximum grayscale value ie, the grayscale value of the W subpixel is 92.3
  • the gain is 255/92.3
  • the grayscale values of the R subpixel, the G subpixel, and the B subpixel are also increased respectively.
  • the pixel is converted into one pixel of the RGBW color gamut.
  • the method according to the embodiment of the present invention provides gray scale gain.
  • the method provided by the embodiment of the present invention can save backlight power consumption more than the prior art, and the energy saving effect is better.
  • FIG. 8 shows a possible structural diagram of the electronic device involved in the above embodiment in the case where the respective functional modules are divided by corresponding functions.
  • the electronic device includes a processing unit 501.
  • the processing unit 501 is configured to support the electronic device to perform step 401 and step 402 in the foregoing embodiments, and/or other processes for the techniques described herein;
  • FIG. 9 a schematic structural diagram of an electronic device provided by an embodiment of the present application is shown in FIG. 9.
  • the electronic device includes a processing module 601 and a communication module 602.
  • the processing module 601 is configured to control and manage the actions of the electronic device, for example, to perform the steps performed by the processing unit 501 described above, and/or to perform other processes of the techniques described herein.
  • the communication module 602 is used to support interaction between the electronic device and other devices.
  • the electronic device may further include a storage module 603 for storing program codes and data of the electronic device.
  • the processing module 601 is a processor
  • the communication module 602 is a communication interface
  • the storage module 603 is a memory
  • the electronic device is the electronic device shown in FIG.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be another division manner for example, multiple units or components may be used.
  • the combination may be integrated into another device, or some features may be ignored or not performed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may be one physical unit or multiple physical units, that is, may be located in one place, or may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a readable storage medium.
  • the technical solution of the embodiments of the present application may be embodied in the form of a software product in the form of a software product in essence or in the form of a contribution to the prior art, and the software product is stored in a storage medium.
  • a number of instructions are included to cause a device (which may be a microcontroller, chip, etc.) or processor to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

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  • General Physics & Mathematics (AREA)
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  • Liquid Crystal Display Device Control (AREA)
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Abstract

L'invention concerne un procédé de conversion de couleur primaire et un dispositif électronique, le procédé comprenant les étapes consistant : à déterminer le gain en échelle de gris d'un premier pixel tel que représenté dans la formule (I) (401) ; à convertir le premier pixel en un second pixel selon le gain en échelle de gris G (402). Le premier pixel est composé d'au moins un sous-pixel parmi un premier sous-pixel, un deuxième sous-pixel et un troisième sous-pixel, et le deuxième pixel est composé d'au moins un parmi le premier sous-pixel, le deuxième sous-pixel et le troisième sous-pixel ainsi qu'un quatrième sous-pixel, N étant la valeur maximale de valeurs d'échelle de gris de pixel ; k étant un multiple du facteur de transmission du quatrième sous-pixel sur le blanc composite du premier sous-pixel, le deuxième sous-pixel et le troisième sous-pixel ; hmax est la valeur d'échelle de gris la plus grande parmi les valeurs d'échelle de gris du premier sous-pixel, du deuxième sous-pixel et du troisième sous-pixel du premier pixel ; hmin est la plus petite valeur d'échelle de gris parmi les valeurs d'échelle de gris du premier sous-pixel, du deuxième sous-pixel et du troisième sous-pixel du premier pixel. Le procédé peut réduire la luminosité d'un rétroéclairage et améliorer les économies d'énergie.
PCT/CN2018/080672 2018-03-27 2018-03-27 Procédé de conversion de couleur primaire et dispositif électronique WO2019183796A1 (fr)

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CN201880084741.9A CN111527540B (zh) 2018-03-27 2018-03-27 一种基色转化方法及电子设备

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