WO2015096366A1 - 信号转换装置、方法和显示装置 - Google Patents

信号转换装置、方法和显示装置 Download PDF

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Publication number
WO2015096366A1
WO2015096366A1 PCT/CN2014/078070 CN2014078070W WO2015096366A1 WO 2015096366 A1 WO2015096366 A1 WO 2015096366A1 CN 2014078070 W CN2014078070 W CN 2014078070W WO 2015096366 A1 WO2015096366 A1 WO 2015096366A1
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value
brightness
luminance
rgb
rgbw
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PCT/CN2014/078070
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English (en)
French (fr)
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杨飞
张晨
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京东方科技集团股份有限公司
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Priority to US14/422,819 priority Critical patent/US9570015B2/en
Priority to EP14861139.5A priority patent/EP2953120B1/en
Publication of WO2015096366A1 publication Critical patent/WO2015096366A1/zh

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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
    • G09G3/3406—Control of illumination source
    • G09G3/3413—Details of control of colour illumination sources
    • G—PHYSICS
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    • 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
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    • 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
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G3/2096—Details of the interface to the display terminal specific for a flat panel
    • 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]
    • G—PHYSICS
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    • 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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    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
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    • 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

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a signal conversion device, method, and display device Set.
  • the signal Transmission interface for example: Video Graphics Array (referred to as: VGA) Interface or digital video interface (Digital Visual Interface, DVI for short)
  • VGA Video Graphics Array
  • DVI Digital Visual Interface
  • the power consumption of the light-emitting device is large during the display of the display screen, which requires a relatively high cost.
  • the chip is driven, which increases the manufacturing cost of the product.
  • the present invention provides a signal conversion device, method and display device for not changing power consumption Under the premise of improving the brightness of the display screen and without changing the display brightness of the display screen Lower the power consumption of the light emitting device.
  • the present invention provides a signal conversion apparatus including: gamma conversion Changing unit, brightness detecting unit and brightness processing unit;
  • the gamma conversion unit is configured to perform gamma conversion processing on the RGB input signal to generate RGB brightness input value
  • the brightness detecting unit is configured to input a value according to an RGB proportional coefficient and the RGB brightness. Generate a W brightness input value;
  • the brightness processing unit is configured to input according to the RGB scale coefficient and the RGB brightness
  • the input value and the W luminance input value generate an RGBW output signal.
  • the brightness processing unit includes: a brightness calculation unit and an inverse gamma conversion unit;
  • the brightness calculation unit is configured according to the RGB scale factor, the RGB brightness input value, and The W luminance input value generates an RGBW luminance output value, and outputs the RGBW luminance output value Out to the inverse gamma conversion unit;
  • the inverse gamma conversion unit generates the RGBW input according to the RGBW luminance output value Signal out.
  • the brightness processing unit further includes: a brightness scaling unit, the brightness scaling The unit scales the RGBW maximum brightness value according to the brightness scaling factor to generate a scaled RGBW maximum brightness value, and outputting the scaled RGBW maximum brightness value to the gamma conversion a unit and the inverse gamma conversion unit, wherein
  • the gamma conversion unit pairs the RGB input signal according to the scaled RGBW maximum brightness value Performing gamma conversion processing, generating the RGB luminance input value, and inputting the RGB luminance input value Output to the brightness detecting unit and the brightness calculating unit;
  • the inverse gamma conversion unit is configured according to the scaled RGBW maximum brightness value and the RGBW The luminance output value generates the RGBW output signal.
  • the brightness processing unit includes: a brightness calculation unit, a brightness scaling unit, and Anti-gamma conversion unit, wherein
  • the gamma conversion unit performs gamma conversion on the RGB input signal according to the RGBW maximum brightness value Changing processing, generating an RGB luminance input value, and outputting the RGB luminance input value to the luminance a detecting unit and the brightness calculating unit;
  • the brightness calculation unit is configured according to the RGB scale factor, the RGB brightness input value, and The W luminance input value generates an RGBW luminance output value, and outputs the RGBW luminance output value Out to the brightness scaling unit;
  • the brightness scaling unit shrinks the RGBW brightness output value according to a brightness scaling factor Put processing, generate the scaled RGBW brightness output value, and output the scaled RGBW brightness output value Output to the inverse gamma conversion unit;
  • the inverse gamma conversion unit is configured according to the RGBW maximum brightness value and the scaled RGBW The luminance output value generates the RGBW output signal.
  • the scaled RGBW maximum brightness value includes a scaled R maximum brightness value L Rmax , a scaled G maximum brightness value L Gmax , a scaled B maximum brightness value L Bmax , and a scaled W maximum brightness value L Wmax .
  • the RGB input signal includes: an R input signal Ri, a G input signal Gi, and a B input signal Bi
  • the RGB luminance input values include: an R luminance input value L R , a G luminance input value L G , and a B luminance input value L B
  • the formula for the RGB luminance input value is: Where n is the number of bits of the RGB input signal and ⁇ is the gamma value.
  • the RGBW luminance output value includes: an R luminance output value L R′ , a G luminance output value L G′ , a B luminance output value L B′, and a W luminance output value L W′
  • the RGB scaling coefficient includes : R scale factor R R , G scale factor R G and B scale factor R B
  • the RGBW output signal includes: an R output signal Ro, a G output signal Go, B output signal Bo and W output signal Wo;
  • the RGBW output signals are respectively:
  • the brightness scaling factor of the brightness scaling unit is K, R maximum brightness value L R′max , G maximum brightness value L G′max , B maximum brightness value L B′max and W maximum brightness value L W′ Max
  • L Rmax K ⁇ L R'max
  • L Gmax K ⁇ L G'max
  • L Bmax K ⁇ L B'max
  • L Wmax K ⁇ L W'max
  • the RGB input signal includes: an R input signal Ri, a G input signal Gi, and a B input signal Bi, wherein the RGB luminance input values include: R luminance input value L R , G luminance input value L G and B Luminance input value L B ; the formula of the RGB luminance input value is: Where n is the number of bits of the RGB input signal, ⁇ is the gamma value, L R'max is the R maximum luminance value, L G'max is the G maximum luminance value, and L B'max is the B maximum luminance value.
  • the RGBW luminance output value includes: an R luminance output value L R′ , a G luminance output value L G′ , a B luminance output value L B′, and a W luminance output value L W′
  • the RGB scaling coefficient includes : R scale factor R R , G scale factor R G and B scale factor R B
  • the RGBW output signal includes: an R output signal Ro, a G output signal Go, B output signal Bo and W output signal Wo;
  • the RGBW output signals are: Where L W'max is the maximum brightness value of W, L R1 is the R brightness output value after scaling, L G1 is the scaled G brightness output value, L B1 is the scaled B brightness output value and L W1 is the scaled W brightness output value.
  • the brightness scaling unit of the brightness scaling unit is 1/K, wherein
  • the RGBW output signals are:
  • the signal conversion device further includes: an RGB ratio calculation unit;
  • the RGB ratio calculating unit is configured to calculate the RGB ratio according to RGBW color coordinates coefficient.
  • the RGBW color coordinates include: R color coordinates R(x R , y R ), G color coordinates G(x G , y G ), B color coordinates B(x B , y B ), and W color coordinates W(x W , y W );
  • the brightness detecting unit is configured according to the RGB scale coefficient and the RGB brightness
  • the input value generates an RGB luminance replacement value, and the RGB luminance replacement value is subjected to a minimum value process.
  • the W brightness input value is configured according to the RGB scale coefficient and the RGB brightness.
  • the RGB luminance replacement value includes: an R luminance replacement value S R , a G luminance replacement value S G , and a B luminance replacement value S B ,
  • the RGB luminance replacement values are respectively:
  • the present invention provides a display device comprising: the above signal conversion Change the device.
  • the present invention provides a signal conversion method comprising the following steps:
  • Step S1 performing gamma conversion processing on the RGB input signal to generate an RGB luminance input value
  • Step S2 generating a W luminance input according to the RGB proportional coefficient and the RGB luminance input value Value
  • Step S3 according to the RGB proportional coefficient, the RGB luminance input value, and the W bright Enter the value to generate the RGBW output signal.
  • the step S3 includes the following steps: according to the RGB scale coefficient, the RGB luminance input value and the W luminance input value, generating an RGBW luminance output value;
  • the RGBW luminance output value is generated to generate the RGBW output signal.
  • the step S1 further includes: maximizing the RGBW according to the brightness scaling factor.
  • the brightness value is scaled to generate a maximum brightness value of the RGBW after scaling;
  • the step S3 further includes:
  • the step S1 further includes: inputting RGB according to the maximum brightness value of the RGBW
  • the input signal is subjected to gamma conversion processing to generate an RGB luminance input value
  • the step S3 further includes:
  • the RGBW luminance output value is scaled according to a brightness scaling factor to generate a scaling After RGBW brightness output value
  • the signal conversion method further includes the following steps:
  • the RGB scale factor is calculated from the RGBW color coordinates.
  • the step S2 further includes: according to the RGB scale coefficient and the RGB
  • the luminance input value generates an RGB luminance replacement value, and takes a minimum value for the RGB luminance replacement value.
  • the W brightness input value is obtained.
  • the gamma is configured to perform gamma conversion processing on the RGB input signal to generate an RGB luminance input value
  • the degree detecting unit is configured to generate a W brightness input value according to the RGB scale factor and the RGB brightness input value
  • the brightness processing unit is used to input values according to RGB scale factor, RGB brightness input value and W brightness input value.
  • this embodiment can improve the brightness of the display screen without changing the power consumption.
  • FIG. 1 is a schematic structural diagram of a signal conversion apparatus according to Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural diagram of a signal conversion apparatus according to Embodiment 2 of the present invention.
  • FIG. 3 is a flowchart of a signal conversion method according to Embodiment 4 of the present invention.
  • FIG. 5 is a flowchart of a signal conversion method according to Embodiment 6 of the present invention.
  • FIG. 1 is a schematic structural diagram of a signal conversion apparatus according to Embodiment 1 of the present invention, such as As shown in FIG. 1, the apparatus includes: a gamma conversion unit 11, a brightness detecting unit 12, and brightness processing. Unit 13.
  • the gamma conversion unit 11 is configured to perform gamma conversion processing on the RGB input signal to generate RGB brightness input value.
  • the brightness detecting unit 12 is configured to calculate the RGB scale coefficient and the RGB brightness Enter a value to generate a W brightness input value.
  • the brightness processing unit 13 is configured to use the RGB scale factor, The RGB luminance input value and the W luminance input value generate an RGBW output signal.
  • R represents red
  • G stands for green
  • B stands for blue
  • W stands for white.
  • the brightness processing unit 13 includes: a brightness calculation unit 14 and an inverse gamma turn Change unit 15.
  • the brightness calculation unit 14 is configured to input values according to RGB, RGB brightness, and W Luminance input value, generate RGBW brightness output value, and output RGBW brightness output value to anti-gamma Conversion unit 15.
  • the inverse gamma conversion unit 15 is configured to generate RGBW according to the RGBW luminance output value output signal.
  • the brightness processing unit 13 may further include: a brightness scaling unit 16.
  • the brightness reducing unit 16 is configured to perform scaling processing on the RGBW maximum brightness value according to the brightness scaling factor, generate the scaled RGBW maximum brightness value, and output the scaled RGBW maximum brightness value to the gamma conversion unit 11 and the inverse gamma conversion unit 15.
  • the RGBW maximum luminance value includes an R maximum luminance value L R′max , a G maximum luminance value L G′max , a B maximum luminance value L B′max , and a W maximum luminance value L W′max , and the RGBW maximum luminance value after scaling.
  • the brightness scale factor is K
  • the value range of K includes 0.5 To 2
  • the gamma conversion unit 11 is specifically configured to perform gamma conversion processing on the RGB input signal according to the scaled RGBW maximum luminance value, generate an RGB luminance input value, and output the RGB luminance input value to the luminance detecting unit 12 and the luminance calculating unit 14.
  • the RGB input signals include: an R input signal Ri, a G input signal Gi, and a B input signal Bi
  • the RGB luminance input values include: an R luminance input value L R , a G luminance input value L G , and a B luminance input value L B
  • the brightness detecting unit 12 is specifically configured to generate an RGB brightness replacement value according to the RGB scale coefficient and the RGB brightness input value, and perform a minimum value processing on the RGB brightness replacement value to obtain a W brightness input value, and input the W brightness value.
  • the output is output to the brightness calculation unit 14.
  • the RGB scale factor includes: an R scale factor R R , a G scale factor R G , and a B scale factor R B
  • the RGB brightness replacement values include: an R brightness replacement value S R , a G brightness replacement value S G , and a B brightness replacement value.
  • S B W brightness input value is L W
  • the formula of RGB brightness replacement value is:
  • the signal conversion device further includes: an RGB ratio calculation unit 17.
  • the RGB scale calculation unit 17 is for calculating the RGB scale coefficient from the RGBW color coordinates, and outputs the RGB scale factor to the luminance detecting unit 12 and the luminance calculating unit 14.
  • the RGBW color coordinates include: R color coordinates R(x R , y R ), G color coordinates G(x G , y G ), B color coordinates B (x B , y B ), and W color coordinates W (x) W , y W ), the formula (1) of the RGB scale factor can be:
  • RGB scale factor formula (2) can be:
  • the RGBW luminance output value includes: an R luminance output value L R′ , a G luminance output value L G′ , a B luminance output value L B′ , and a luminance output value L W′ , which are generated by the luminance calculation unit 14 .
  • the inverse gamma conversion unit 15 is specifically configured to generate an RGBW output signal according to the scaled RGBW maximum brightness value and the RGBW brightness output value.
  • the RGBW output signals include: R output signal Ro, G output signal Go, B output signal Bo, and W output signal Wo
  • the gamma conversion unit is used to input an RGB signal.
  • the gamma conversion process generates RGB luminance input values
  • the luminance detection unit is used to generate RGB ratios.
  • Example coefficient and RGB brightness input value generate W brightness input value
  • brightness processing unit is used according to RGB
  • the proportional coefficient, the RGB luminance input value, and the W luminance input value generate an RGBW output signal
  • the power consumption of the light-emitting device reduces the manufacturing cost of the power supply, thereby reducing the manufacturing of the product. cost.
  • the brightness scaling unit can scale the RGBW maximum brightness value according to the brightness scaling factor The RGBW maximum brightness value after scaling is generated, thereby further improving the brightness of the display screen.
  • FIG. 2 is a schematic structural diagram of a signal conversion apparatus according to Embodiment 2 of the present invention, such as FIG. 2 shows the signal conversion apparatus provided in this embodiment and the signal conversion provided in the first embodiment.
  • the brightness processing unit 21 includes: a brightness calculation unit 14, a brightness zoom sheet Element 22 and inverse gamma conversion unit 23.
  • the gamma conversion unit 11 the brightness detection unit 12, and the brightness calculation unit
  • the specific description of the 14 and RGB ratio calculating unit 17 can be the first embodiment described above, and details are not described herein again.
  • the luminance calculation unit 14 outputs the RGBW luminance output value to the luminance scaling unit 22.
  • the brightness scaling unit 22 is configured to perform scaling processing on the RGBW luminance output value according to the luminance scaling coefficient, generate a scaled RGBW luminance output value, and output the scaled RGBW luminance output value to the inverse gamma conversion unit 23.
  • the scaled RGBW luminance output value includes: a scaled R luminance output value L R1 , a scaled G luminance output value L G1 , a scaled B luminance output value L B1 , and a scaled W luminance output value L W1 , assuming brightness scaling
  • the brightness scaling factor of the unit 22 is 1/K, and the formula of the RGBW brightness output value after scaling is:
  • the inverse gamma conversion unit 23 is for generating an RGBW output signal based on the RGBW maximum luminance values L R'max , L G'max , L B'max and L W'max and the scaled RGBW luminance output values.
  • the gamma conversion unit is used to input an RGB signal.
  • the gamma conversion process generates RGB luminance input values
  • the luminance detection unit is used to generate RGB ratios.
  • Example coefficient and RGB brightness input value generate W brightness input value
  • brightness processing unit is used according to RGB
  • the proportional coefficient, the RGB luminance input value, and the W luminance input value generate an RGBW output signal
  • the power consumption of the light-emitting device reduces the manufacturing cost of the power supply, thereby reducing the manufacturing of the product. cost.
  • the brightness scaling unit can scale the RGBW brightness output value according to the brightness scaling factor The RGBW luminance output value after scaling is generated to further increase the brightness of the display screen.
  • Embodiment 3 of the present invention provides a display device including a signal conversion device Set.
  • the signal conversion device may be provided by the foregoing Embodiment 1 or Embodiment 2. Signal conversion device will not be described here.
  • the display device may include: an OLED display device or a liquid crystal display device.
  • the gamma conversion unit is used to input the RGB input signal.
  • Line gamma conversion processing generates RGB luminance input values
  • luminance detection unit is used for RGB proportional systems
  • the number and RGB luminance input values generate W luminance input values
  • the luminance processing unit is used to scale according to RGB
  • the coefficient, the RGB luminance input value, and the W luminance input value generate an RGBW output signal, which can be Improve the brightness of the display without changing the power consumption, thus improving the contrast of the display Degree, which improves the display quality of the picture and can not change the display brightness of the display Reducing the power consumption of the light-emitting device under the premise, thereby improving the lifetime of the light-emitting device and reducing the The cost of driving the chip, which in turn reduces the manufacturing cost of the product.
  • this embodiment is reduced due to The power consumption of the light-emitting device, thereby reducing the manufacturing cost of the power supply, thereby reducing the manufacture of the product this.
  • the embodiment can effectively reduce the flow The current of the light emitting device, thereby greatly reducing the power consumption of the light emitting device.
  • FIG. 3 is a flowchart of a signal conversion method according to Embodiment 4 of the present invention, as shown in FIG. 3 As shown, the method includes:
  • Step 101 Perform gamma conversion processing on the RGB input signal to generate an RGB luminance input value.
  • Step 102 Generate a W brightness input value according to the RGB scale factor and the RGB brightness input value.
  • Step 103 According to the RGB proportional coefficient, the RGB luminance input value, and the W luminance input value, Into the RGBW output signal.
  • step 103 may include: inputting values according to RGB scale factors, RGB luminance, and W brightness input value, generate RGBW brightness output value; generate RGBW according to RGBW brightness output value output signal.
  • the signal conversion method provided in this embodiment includes: performing gamma conversion on an RGB input signal Processing generates RGB luminance input values, generates W bright according to RGB scale factor and RGB luminance input value Input value, generate RGBW according to RGB scale factor, RGB brightness input value and W brightness input value Output signal, this embodiment can improve the brightness of the display screen without changing the power consumption, thereby Improve the contrast of the display screen, thereby improving the display quality of the screen, and can not change
  • the illuminator is improved by reducing the power consumption of the illuminating device under the premise of changing the display brightness of the display screen
  • the life of the device and the cost of the driver chip are reduced, thereby reducing the manufacturing cost of the product.
  • the manufacturing cost of the power source is reduced. It reduces the manufacturing cost of the product.
  • FIG. 4 is a flowchart of a signal conversion method according to Embodiment 5 of the present invention, as shown in FIG. 4 As shown, the method includes:
  • Step 201 Perform scaling processing on the maximum brightness value of the RGBW according to the brightness scaling factor.
  • Step 202 Calculate an RGB scale coefficient according to RGBW color coordinates.
  • Step 203 Perform gamma conversion on the RGB input signal according to the maximum brightness value of the RGBW after scaling Change processing to generate RGB luminance input values.
  • Step 204 Generate an RGB luminance replacement value according to the RGB proportional coefficient and the RGB luminance input value. The minimum value of the RGB luminance replacement value is obtained to obtain the W luminance input value.
  • Step 205 According to the RGB proportional coefficient, the RGB luminance input value, and the W luminance input value, Into the RGBW brightness output value.
  • Step 206 Generate, according to the RGBW maximum brightness value and the RGBW brightness output value after scaling RGBW output signal.
  • the signal conversion method provided in this embodiment can be converted by the signal provided in the first embodiment.
  • Device implementation for specific descriptions of various names and formulas in this embodiment, refer to the above embodiments. First, I will not repeat them here.
  • the signal conversion method provided in this embodiment includes: performing gamma conversion on an RGB input signal Processing generates RGB luminance input values, generates W bright according to RGB scale factor and RGB luminance input value Input value, generate RGBW according to RGB scale factor, RGB brightness input value and W brightness input value Output signal, this embodiment can improve the brightness of the display screen without changing the power consumption, thereby Improve the contrast of the display screen, thereby improving the display quality of the screen, and can not change
  • the illuminator is improved by reducing the power consumption of the illuminating device under the premise of changing the display brightness of the display screen The life of the device and the cost of the driver chip are reduced, thereby reducing the manufacturing cost of the product.
  • the manufacturing cost of the power source is reduced. It reduces the manufacturing cost of the product. Reduce the maximum brightness value of RGBW according to the brightness scaling factor The processing of the RGBW maximum brightness value after the scaling is generated, thereby further increasing the brightness of the display screen.
  • FIG. 5 is a flowchart of a signal conversion method according to Embodiment 6 of the present invention, as shown in FIG. 5 As shown, the method includes:
  • Step 301 Calculate an RGB scale coefficient according to RGBW color coordinates.
  • Step 302 Perform gamma conversion processing on the RGB input signal according to the maximum luminance value of the RGBW, Generate RGB luminance input values.
  • Step 303 Generate an RGB luminance replacement value according to the RGB proportional coefficient and the RGB luminance input value. The minimum value of the RGB luminance replacement value is obtained to obtain the W luminance input value.
  • Step 304 According to the RGB proportional coefficient, the RGB luminance input value, and the W luminance input value, Into the RGBW brightness output value.
  • Step 305 Perform scaling processing on the RGBW luminance output value according to the brightness scaling factor.
  • Step 306 generating according to the RGBW maximum brightness value and the scaled RGBW brightness output value. RGBW output signal.
  • the signal conversion method provided in this embodiment can be converted by the signal provided in the second embodiment.
  • Device implementation for specific descriptions of various names and formulas in this embodiment, refer to the above embodiments. Second, I will not repeat them here.
  • the signal conversion method provided in this embodiment includes: performing gamma conversion on an RGB input signal Processing generates RGB luminance input values, generates W bright according to RGB scale factor and RGB luminance input value Input value, generate RGBW according to RGB scale factor, RGB brightness input value and W brightness input value Output signal, this embodiment can improve the brightness of the display screen without changing the power consumption, thereby Improve the contrast of the display screen, thereby improving the display quality of the screen, and can not change
  • the illuminator is improved by reducing the power consumption of the illuminating device under the premise of changing the display brightness of the display screen The life of the device and the cost of the driver chip are reduced, thereby reducing the manufacturing cost of the product.
  • the manufacturing cost of the power source is reduced. It reduces the manufacturing cost of the product.
  • Reduce the RGBW brightness output value according to the brightness scaling factor The processing is performed to generate a scaled RGBW luminance output value, thereby further increasing the brightness of the display screen.

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Abstract

本发明公开了信号转换装置、方法和显示装置。该信号转换装置包括：伽玛转换单元、亮度检测单元和亮度处理单元；伽玛转换单元，用于对RGB输入信号进行伽玛转换处理，生成RGB亮度输入值；亮度检测单元，用于根据RGB比例系数和RGB亮度输入值，生成W亮度输入值；亮度处理单元，用于根据RGB比例系数、RGB亮度输入值和W亮度输入值，生成RGBW 输出信号。本发明可在不改变功耗的前提下提高显示画面的亮度，从而提高了显示画面的对比度，进而提高了画面的显示质量，以及可以在不改变显示画面的显示亮度的前提下降低发光器件的功耗，从而提高了发光器件的寿命，以及降低了驱动芯片的成本，进而降低了产品的制造成本。

Description

信号转换装置、方法和显示装置 技术领域
本发明涉及显示技术领域，特别涉及信号转换装置、方法和显示装 置。
背景技术
当今消费者不仅对产品的外观和质量有着苛刻的需求，而且对产品 的价格和实用性也有着更高的关注。在显示领域，特别是有机电致发光二 极管(Organic Light-Emitting Diode，简称：OLED)显示领域，红色、 绿色和蓝色的发光效率低下成为制约产品优化的瓶颈。为满足消费者的需 求，由红色亚像素(R)、绿色亚像素(G)、蓝色亚像素(B)和白色亚 像素(W)所组成的新的像素排列(RGBW排列)技术应运而生。但是信号 传输接口，例如：视频图形阵列(Video Graphics Array，简称：VGA) 接口或者数字视频接口(Digital Visual Interface，简称：DVI)，通 常传输的是RGB信号，所以画面显示过程中在画面不失真的情况下，需要 将传输时的RGB信号转换为显示时的RGBW信号，以供显示装置进行显示。
但是，现有技术中RGB信号转换为RGBW信号的方法存在如下问题：
1)显示画面的亮度降低以及显示画面的对比度降低，从而降低了显 示画面的显示质量；
2)在显示画面显示的过程中发光器件的功耗较大，从而降低了发光 器件的寿命；以及
3)在显示画面显示的过程中发光器件的功耗较大，需要成本较高的 驱动芯片，从而增加了产品的制造成本。
发明内容
本发明提供了信号转换装置、方法和显示装置，用于在不改变功耗 的前提下提高显示画面的亮度，以及在不改变显示画面的显示亮度的前提 下降低发光器件的功耗。
为实现上述目的，本发明提供了一种信号转换装置，包括：伽玛转 换单元、亮度检测单元和亮度处理单元；
所述伽玛转换单元，用于对RGB输入信号进行伽玛转换处理，生成 RGB亮度输入值；
所述亮度检测单元，用于根据RGB比例系数和所述RGB亮度输入值， 生成W亮度输入值；
所述亮度处理单元，用于根据所述RGB比例系数、所述RGB亮度输 入值和所述W亮度输入值，生成RGBW输出信号。
可选地，所述亮度处理单元包括：亮度计算单元和反伽玛转换单元；
所述亮度计算单元根据所述RGB比例系数、所述RGB亮度输入值和 所述W亮度输入值，生成RGBW亮度输出值，并将所述RGBW亮度输出值输 出至所述反伽玛转换单元；以及
所述反伽玛转换单元根据所述RGBW亮度输出值，生成所述RGBW输 出信号。
可选地，所述亮度处理单元还包括：亮度缩放单元，所述亮度缩放 单元根据亮度缩放系数对RGBW最大亮度值进行缩放处理，生成缩放后 RGBW最大亮度值，并将所述缩放后RGBW最大亮度值输出至所述伽玛转换 单元和所述反伽玛转换单元，其中
所述伽玛转换单元根据所述缩放后RGBW最大亮度值对RGB输入信号 进行伽玛转换处理，生成所述RGB亮度输入值，并将所述RGB亮度输入值 输出至所述亮度检测单元和所述亮度计算单元；以及
所述反伽玛转换单元根据所述缩放后RGBW最大亮度值和所述RGBW 亮度输出值，生成所述RGBW输出信号。
可选地，所述亮度处理单元包括：亮度计算单元、亮度缩放单元和 反伽玛转换单元，其中
所述伽玛转换单元根据RGBW最大亮度值对RGB输入信号进行伽玛转 换处理，生成RGB亮度输入值，并将所述RGB亮度输入值输出至所述亮度 检测单元和所述亮度计算单元；
所述亮度计算单元根据所述RGB比例系数、所述RGB亮度输入值和 所述W亮度输入值，生成RGBW亮度输出值，并将所述RGBW亮度输出值输 出至所述亮度缩放单元；
所述亮度缩放单元根据亮度缩放系数对所述RGBW亮度输出值进行缩 放处理，生成缩放后RGBW亮度输出值，并将所述缩放后RGBW亮度输出值 输出至所述反伽玛转换单元；以及
所述反伽玛转换单元根据所述RGBW最大亮度值和所述缩放后RGBW 亮度输出值，生成所述RGBW输出信号。
可选地，所述缩放后RGBW最大亮度值包括缩放后R最大亮度值LRmax、 缩放后G最大亮度值LGmax、缩放后B最大亮度值LBmax和缩放后W最大亮度 值LWmax，所述RGB输入信号包括：R输入信号Ri、G输入信号Gi和B输入 信号Bi，所述RGB亮度输入值包括：R亮度输入值LR、G亮度输入值LG和 B亮度输入值LB；所述RGB亮度输入值的公式为：
Figure PCTCN2014078070-appb-000001
Figure PCTCN2014078070-appb-000002
其中，n为所述RGB输入信号的位数， γ为伽玛值。
可选地，所述RGBW亮度输出值包括：R亮度输出值LR′、G亮度输出 值LG′、B亮度输出值LB′和W亮度输出值LW′，所述RGB比例系数包括：R 比例系数RR、G比例系数RG和B比例系数RB；所述RGBW亮度输出值分别 为：LR′＝LR-LW×RR、LG′＝LG-LW×RG、LB′＝LB-LW×RB、LW′＝LW， 其中，LW为W亮度输入值。
可选地，所述RGBW输出信号包括：R输出信号Ro、G输出信号Go、 B输出信号Bo和W输出信号Wo；
所述RGBW输出信号的分别为：
Figure PCTCN2014078070-appb-000003
Figure PCTCN2014078070-appb-000004
可选地，所述亮度缩放单元的亮度缩放系数为K，R最大亮度值LR′max、 G最大亮度值LG′max、B最大亮度值LB′max和W最大亮度值LW′max其中， LRmax＝K×LR′max、LGmax＝K×LG′max、LBmax＝K×LB′max、LWmax＝K×LW′max， 从而：
Figure PCTCN2014078070-appb-000005
Figure PCTCN2014078070-appb-000006
另外可选地，所述RGB输入信号包括：R输入信号Ri、G输入信号Gi 和B输入信号Bi，所述RGB亮度输入值包括：R亮度输入值LR、G亮度输 入值LG和B亮度输入值LB；所述RGB亮度输入值的公式为：
Figure PCTCN2014078070-appb-000007
其中，n为所述 RGB输入信号的位数，γ为伽玛值，LR′max为R最大亮度值、LG′max为G最大 亮度值、LB′max为B最大亮度值。
可选地，所述RGBW亮度输出值包括：R亮度输出值LR′、G亮度输出 值LG′、B亮度输出值LB′和W亮度输出值LW′，所述RGB比例系数包括：R 比例系数RR、G比例系数RG和B比例系数RB；所述RGBW亮度输出值分别 为：LR′＝LR-LW×RR、LG′＝LG-LW×RG、LB′＝LB-LW×RB、LW′＝LW， 其中，LW为W亮度输入值。
可选地，所述RGBW输出信号包括：R输出信号Ro、G输出信号Go、 B输出信号Bo和W输出信号Wo；
所述RGBW输出信号分别为：
Figure PCTCN2014078070-appb-000008
Figure PCTCN2014078070-appb-000009
其中，LW′max为W最大亮度值，LR1 为缩放后R亮度输出值，LG1为缩放后G亮度输出值，LB1为缩放后B亮 度输出值和LW1为缩放后W亮度输出值。
可选地，所述亮度缩放单元的亮度缩放系数为1/K，其中，
Figure PCTCN2014078070-appb-000010
Figure PCTCN2014078070-appb-000011
所述RGBW输出信号分别为：
Figure PCTCN2014078070-appb-000012
Figure PCTCN2014078070-appb-000013
可选地，信号转换装置还包括：RGB比例计算单元；
所述RGB比例计算单元，用于根据RGBW色坐标计算出所述RGB比例 系数。
可选地，所述RGBW色坐标包括：R色坐标R(xR,yR)、G色坐标G(xG,yG)、 B色坐标B(xB,yB)和W色坐标W(xW,yW)；
所述RGB比例系数的公式为：
红色的比例系数
Figure PCTCN2014078070-appb-000014
绿色的比例系数
Figure PCTCN2014078070-appb-000015
蓝色的比例系数
Figure PCTCN2014078070-appb-000016
或 者
红色的比例系数
Figure PCTCN2014078070-appb-000017
绿色的比例系数
Figure PCTCN2014078070-appb-000018
蓝色的比例系数
Figure PCTCN2014078070-appb-000019
可选地，所述亮度检测单元根据所述RGB比例系数和所述RGB亮度 输入值生成RGB亮度替换值，并对RGB亮度替换值进行取最小值处理得出 所述W亮度输入值。
可选地，所述RGB亮度替换值包括：R亮度替换值SR、G亮度替换值 SG和B亮度替换值SB，
所述RGB亮度替换值分别为：
Figure PCTCN2014078070-appb-000020
则所述W亮度输入值的公式为：LW＝MIN(SR、SG、SB)。
为实现上述目的，本发明提供了一种显示装置，包括：上述信号转 换装置。
为实现上述目的，本发明提供了一种信号转换方法，包括以下步骤：
步骤S1，对RGB输入信号进行伽玛转换处理，生成RGB亮度输入值；
步骤S2，根据RGB比例系数和所述RGB亮度输入值，生成W亮度输 入值；和
步骤S3，根据所述RGB比例系数、所述RGB亮度输入值和所述W亮 度输入值，生成RGBW输出信号。
可选地，所述步骤S3包括以下步骤：根据所述RGB比例系数、所述 RGB亮度输入值和所述W亮度输入值，生成RGBW亮度输出值；以及根据所 述RGBW亮度输出值，生成所述RGBW输出信号。
可选地，所述步骤S1进一步包括：根据亮度缩放系数对RGBW最大 亮度值进行缩放处理，生成缩放后RGBW最大亮度值；以及
根据所述缩放后RGBW最大亮度值对RGB输入信号进行伽玛转换处 理，生成RGB亮度输入值，并且
所述步骤S3进一步包括：
根据所述缩放后RGBW最大亮度值和所述RGBW亮度输出值，生成所 述RGBW输出信号。
可选地，所述步骤S1进一步包括：根据RGBW最大亮度值对RGB输 入信号进行伽玛转换处理，生成RGB亮度输入值，并且
所述步骤S3进一步包括：
根据亮度缩放系数对所述RGBW亮度输出值进行缩放处理，生成缩放 后RGBW亮度输出值；以及
根据所述RGBW最大亮度值和所述缩放后RGBW亮度输出值，生成所 述RGBW输出信号。
可选地，该信号转换方法还包括以下步骤：
根据RGBW色坐标计算出所述RGB比例系数。
可选地，所述步骤S2进一步包括：根据所述RGB比例系数和所述RGB 亮度输入值生成RGB亮度替换值，并对RGB亮度替换值进行取最小值处理 得出所述W亮度输入值。
本发明具有以下有益效果：
本发明提供的信号转换装置、方法和显示装置的技术方案中，伽玛 转换单元用于对RGB输入信号进行伽玛转换处理生成RGB亮度输入值，亮 度检测单元用于根据RGB比例系数和RGB亮度输入值生成W亮度输入值， 亮度处理单元用于根据RGB比例系数、RGB亮度输入值和W亮度输入值生 成RGBW输出信号，本实施例可在不改变功耗的前提下提高显示画面的亮 度，从而提高了显示画面的对比度，进而提高了画面的显示质量，以及可 以在不改变显示画面的显示亮度的前提下降低发光器件的功耗，从而提高 了发光器件的寿命，以及降低了驱动芯片的成本，进而降低了产品的制造 成本。
附图说明
图1为本发明实施例一提供的一种信号转换装置的结构示意图；
图2为本发明实施例二提供的一种信号转换装置的结构示意图；
图3为本发明实施例四提供的一种信号转换方法的流程图；
图4为本发明实施例五提供的一种信号转换方法的流程图；以及
图5为本发明实施例六提供的一种信号转换方法的流程图。
具体实施方式
为使本领域的技术人员更好地理解本发明的技术方案，下面结合附 图对本发明提供的信号转换装置、方法和显示装置进行详细描述。
图1为本发明实施例一提供的一种信号转换装置的结构示意图，如 图1所示，该装置包括：伽玛转换单元11、亮度检测单元12和亮度处理 单元13。伽玛转换单元11用于对RGB输入信号进行伽玛转换处理，生成 RGB亮度输入值。亮度检测单元12用于根据RGB比例系数和所述RGB亮度 输入值，生成W亮度输入值。亮度处理单元13用于根据RGB比例系数、 RGB亮度输入值和W亮度输入值，生成RGBW输出信号。在该说明书中，R 代表红色，G代表绿色，B代表蓝色，W代表白色。
本实施例中，亮度处理单元13包括：亮度计算单元14和反伽玛转 换单元15。亮度计算单元14用于根据RGB比例系数、RGB亮度输入值和W 亮度输入值，生成RGBW亮度输出值，并将RGBW亮度输出值输出至反伽玛 转换单元15。反伽玛转换单元15用于根据RGBW亮度输出值，生成RGBW 输出信号。
进一步地，亮度处理单元13还可以包括：亮度缩放单元16。亮度缩 放单元16用于根据亮度缩放系数对RGBW最大亮度值进行缩放处理，生成 缩放后RGBW最大亮度值，并将缩放后RGBW最大亮度值输出至伽玛转换单 元11和反伽玛转换单元15。具体地，RGBW最大亮度值包括R最大亮度值 LR′max、G最大亮度值LG′max、B最大亮度值LB′max和W最大亮度值LW′max，缩 放后RGBW最大亮度值包括缩放后R最大亮度值LRmax、缩放后G最大亮度 值LGmax、缩放后B最大亮度值LBmax和缩放后W最大亮度值LWmax，亮度缩 放系数为K，K的取值范围包括0.5至2，则缩放后RGBW最大亮度值的公 式为：LRmax＝K×LR′max、LGmax＝K×LG′max、LBmax＝K×LB′max、 LWmax＝K×LW′max。
伽玛转换单元11具体用于根据缩放后RGBW最大亮度值对RGB输入 信号进行伽玛转换处理，生成RGB亮度输入值，并将RGB亮度输入值输出 至亮度检测单元12和亮度计算单元14。具体地，RGB输入信号包括：R 输入信号Ri、G输入信号Gi和B输入信号Bi，RGB亮度输入值包括：R亮 度输入值LR、G亮度输入值LG和B亮度输入值LB，则RGB亮度输入值的公 式为：
Figure PCTCN2014078070-appb-000021
其中，n为 RGB输入信号的位数，γ为伽玛值，γ的取值范围可包括2.0至2.4。本实 施例中，以n＝8和γ＝2.2为例进行描述，则RGB亮度输入值的公式可以为：
Figure PCTCN2014078070-appb-000022
本实施例中，亮度检测单元12具体用于根据RGB比例系数和RGB亮 度输入值生成RGB亮度替换值，对RGB亮度替换值进行取最小值处理得出 W亮度输入值，并将W亮度输入值输出至亮度计算单元14。具体地，RGB 比例系数包括：R比例系数RR、G比例系数RG和B比例系数RB，RGB亮度 替换值包括：R亮度替换值SR、G亮度替换值SG和B亮度替换值SB，W亮 度输入值为LW，则RGB亮度替换值的公式为：
Figure PCTCN2014078070-appb-000023
W亮度输入值的公式为：LW＝MIN(SR、SG、SB)。
可选地，该信号转换装置还包括：RGB比例计算单元17。RGB比例计 算单元17用于根据RGBW色坐标计算出RGB比例系数，并将RGB比例系数 输出至亮度检测单元12和亮度计算单元14。具体地，RGBW色坐标包括： R色坐标R(xR,yR)、G色坐标G(xG,yG)、B色坐标B(xB,yB)和W色坐标 W(xW,yW)，则RGB比例系数的公式(1)可以为：
红色的比例系数
Figure PCTCN2014078070-appb-000024
绿色的比例系数
Figure PCTCN2014078070-appb-000025
蓝色的比例系数
Figure PCTCN2014078070-appb-000026
在实际应用中，还可以采用其它公式计算出RGB比例系数，例如： RGB比例系数公式(2)可以为：
红色的比例系数
Figure PCTCN2014078070-appb-000027
绿色的比例系数
Figure PCTCN2014078070-appb-000028
蓝色的比例系数
Figure PCTCN2014078070-appb-000029
上述RGB比例系数公式(1)和RGB比例系数公式(2)的计算结果 相同。
本实施例中，RGBW亮度输出值包括：R亮度输出值LR′、G亮度输出 值LG′、B亮度输出值LB′和W亮度输出值LW′，则亮度计算单元14生成的 RGBW亮度输出值的公式为：LR′＝LR-LW×RR、LG′＝LG-LW×RG、 LB′＝LB-LW×RB、LW′＝LW。
本实施例中，反伽玛转换单元15具体用于根据缩放后RGBW最大亮 度值和RGBW亮度输出值，生成RGBW输出信号。具体地，RGBW输出信号包 括：R输出信号Ro、G输出信号Go、B输出信号Bo和W输出信号Wo，则 RGBW输出信号的公式为：
Figure PCTCN2014078070-appb-000030
Figure PCTCN2014078070-appb-000031
由于本实施例以n＝8和γ＝2.2为例 进行描述，因此RGBW输出信号的公式可以为：
Figure PCTCN2014078070-appb-000032
Figure PCTCN2014078070-appb-000033
同时，RGBW 输出信号的公式也可以表示为：
Figure PCTCN2014078070-appb-000034
Figure PCTCN2014078070-appb-000035
本实施例提供的信号转换装置中，伽玛转换单元用于对RGB输入信 号进行伽玛转换处理生成RGB亮度输入值，亮度检测单元用于根据RGB比 例系数和RGB亮度输入值生成W亮度输入值，亮度处理单元用于根据RGB 比例系数、RGB亮度输入值和W亮度输入值生成RGBW输出信号，本实施例 可在不改变功耗的前提下提高显示画面的亮度，从而提高了显示画面的对 比度，进而提高了画面的显示质量，以及可以在不改变显示画面的显示亮 度的前提下降低发光器件的功耗，从而提高了发光器件的寿命，以及降低 了驱动芯片的成本，进而降低了产品的制造成本。并且本实施例由于降低 了发光器件的功耗，从而降低了电源的制造成本，进而降低了产品的制造 成本。亮度缩放单元可根据亮度缩放系数对RGBW最大亮度值进行缩放处 理生成缩放后RGBW最大亮度值，从而可进一步提高显示画面的亮度。
图2为本发明实施例二提供的一种信号转换装置的结构示意图，如 图2所示，本实施例提供的信号转换装置与上述实施例一提供的信号转换 装置的区别在于：亮度处理单元21包括：亮度计算单元14、亮度缩放单 元22和反伽玛转换单元23。
本实施例中，对伽玛转换单元11、亮度检测单元12、亮度计算单元 14和RGB比例计算单元17的具体描述可上述实施例一，此处不再赘述。
本实施例中，亮度计算单元14将RGBW亮度输出值输出至亮度缩放 单元22。亮度缩放单元22用于根据亮度缩放系数对RGBW亮度输出值进行 缩放处理，生成缩放后RGBW亮度输出值，并将缩放后RGBW亮度输出值输 出至反伽玛转换单元23。具体地，缩放后RGBW亮度输出值包括：缩放后 R亮度输出值LR1、缩放后G亮度输出值LG1、缩放后B亮度输出值LB1和缩 放后W亮度输出值LW1，假设亮度缩放单元22的亮度缩放系数为1/K，则 缩放后RGBW亮度输出值的公式为：
Figure PCTCN2014078070-appb-000036
Figure PCTCN2014078070-appb-000037
反伽玛转换单元23用于根据RGBW最大亮度值LR′max、LG′max、LB′max和 LW′max和缩放后RGBW亮度输出值，生成RGBW输出信号。RGBW输出信号的 公式为：
Figure PCTCN2014078070-appb-000038
Figure PCTCN2014078070-appb-000039
由于本实施例以n＝8和γ＝2.2为例进行描述，因此 RGBW输出信号的公式可以为：
Figure PCTCN2014078070-appb-000040
Figure PCTCN2014078070-appb-000041
本实施例提供的RGBW输出 信号的公式与上述实施例一提供的RGBW输出信号的公式的计算结果是相 同的。
本实施例提供的信号转换装置中，伽玛转换单元用于对RGB输入信 号进行伽玛转换处理生成RGB亮度输入值，亮度检测单元用于根据RGB比 例系数和RGB亮度输入值生成W亮度输入值，亮度处理单元用于根据RGB 比例系数、RGB亮度输入值和W亮度输入值生成RGBW输出信号，本实施例 可在不改变功耗的前提下提高显示画面的亮度，从而提高了显示画面的对 比度，进而提高了画面的显示质量，以及可以在不改变显示画面的显示亮 度的前提下降低发光器件的功耗，从而提高了发光器件的寿命，以及降低 了驱动芯片的成本，进而降低了产品的制造成本。并且本实施例由于降低 了发光器件的功耗，从而降低了电源的制造成本，进而降低了产品的制造 成本。亮度缩放单元可根据亮度缩放系数对RGBW亮度输出值进行缩放处 理生成缩放后RGBW亮度输出值，从而可进一步提高显示画面的亮度。
本发明实施例三提供了一种显示装置，该显示装置包括信号转换装 置。本实施例中，信号转换装置可采用上述实施例一或者实施例二提供的 信号转换装置，此处不再赘述。
本实施例中，显示装置可包括：OLED显示装置或者液晶显示装置。
本实施例提供的显示装置中，伽玛转换单元用于对RGB输入信号进 行伽玛转换处理生成RGB亮度输入值，亮度检测单元用于根据RGB比例系 数和RGB亮度输入值生成W亮度输入值，亮度处理单元用于根据RGB比例 系数、RGB亮度输入值和W亮度输入值生成RGBW输出信号，本实施例可在 不改变功耗的前提下提高显示画面的亮度，从而提高了显示画面的对比 度，进而提高了画面的显示质量，以及可以在不改变显示画面的显示亮度 的前提下降低发光器件的功耗，从而提高了发光器件的寿命，以及降低了 驱动芯片的成本，进而降低了产品的制造成本。并且本实施例由于降低了 发光器件的功耗，从而降低了电源的制造成本，进而降低了产品的制造成 本。特别是，当显示装置为OLED显示装置时，本实施例可有效降低流过 发光器件的电流，从而极大的降低发光器件的功耗。
图3为本发明实施例四提供的一种信号转换方法的流程图，如图3 所示，该方法包括：
步骤101、对RGB输入信号进行伽玛转换处理，生成RGB亮度输入值。
步骤102、根据RGB比例系数和RGB亮度输入值，生成W亮度输入值。
步骤103、根据RGB比例系数、RGB亮度输入值和W亮度输入值，生 成RGBW输出信号。
例如，步骤103可包括：根据RGB比例系数、RGB亮度输入值和所述 W亮度输入值，生成RGBW亮度输出值；根据RGBW亮度输出值，生成RGBW 输出信号。
本实施例提供的信号转换方法包括：对RGB输入信号进行伽玛转换 处理生成RGB亮度输入值，根据RGB比例系数和RGB亮度输入值生成W亮 度输入值，根据RGB比例系数、RGB亮度输入值和W亮度输入值生成RGBW 输出信号，本实施例可在不改变功耗的前提下提高显示画面的亮度，从而 提高了显示画面的对比度，进而提高了画面的显示质量，以及可以在不改 变显示画面的显示亮度的前提下降低发光器件的功耗，从而提高了发光器 件的寿命，以及降低了驱动芯片的成本，进而降低了产品的制造成本。并 且本实施例由于降低了发光器件的功耗，从而降低了电源的制造成本，进 而降低了产品的制造成本。
图4为本发明实施例五提供的一种信号转换方法的流程图，如图4 所示，该方法包括：
步骤201、根据亮度缩放系数对RGBW最大亮度值进行缩放处理，生 成缩放后RGBW最大亮度值。
步骤202、根据RGBW色坐标计算出RGB比例系数。
步骤203、根据缩放后RGBW最大亮度值对RGB输入信号进行伽玛转 换处理，生成RGB亮度输入值。
步骤204、根据RGB比例系数和RGB亮度输入值生成RGB亮度替换值， 并对RGB亮度替换值进行取最小值处理得出W亮度输入值。
步骤205、根据RGB比例系数、RGB亮度输入值和W亮度输入值，生 成RGBW亮度输出值。
步骤206、根据缩放后RGBW最大亮度值和RGBW亮度输出值，生成 RGBW输出信号。
本实施例提供的信号转换方法可通过上述实施例一提供的信号转换 装置实现，对本实施例中各个名称以及公式的具体描述可参见上述实施例 一，此处不再赘述。
本实施例提供的信号转换方法包括：对RGB输入信号进行伽玛转换 处理生成RGB亮度输入值，根据RGB比例系数和RGB亮度输入值生成W亮 度输入值，根据RGB比例系数、RGB亮度输入值和W亮度输入值生成RGBW 输出信号，本实施例可在不改变功耗的前提下提高显示画面的亮度，从而 提高了显示画面的对比度，进而提高了画面的显示质量，以及可以在不改 变显示画面的显示亮度的前提下降低发光器件的功耗，从而提高了发光器 件的寿命，以及降低了驱动芯片的成本，进而降低了产品的制造成本。并 且本实施例由于降低了发光器件的功耗，从而降低了电源的制造成本，进 而降低了产品的制造成本。根据亮度缩放系数对RGBW最大亮度值进行缩 放处理生成缩放后RGBW最大亮度值，从而可进一步提高显示画面的亮度。
图5为本发明实施例六提供的一种信号转换方法的流程图，如图5 所示，该方法包括：
步骤301、根据RGBW色坐标计算出RGB比例系数。
步骤302、根据RGBW最大亮度值对RGB输入信号进行伽玛转换处理， 生成RGB亮度输入值。
步骤303、根据RGB比例系数和RGB亮度输入值生成RGB亮度替换值， 并对RGB亮度替换值进行取最小值处理得出W亮度输入值。
步骤304、根据RGB比例系数、RGB亮度输入值和W亮度输入值，生 成RGBW亮度输出值。
步骤305、根据亮度缩放系数对RGBW亮度输出值进行缩放处理，生 成缩放后RGBW亮度输出值。
步骤306、根据RGBW最大亮度值和缩放后RGBW亮度输出值，生成 RGBW输出信号。
本实施例提供的信号转换方法可通过上述实施例二提供的信号转换 装置实现，对本实施例中各个名称以及公式的具体描述可参见上述实施例 二，此处不再赘述。
本实施例提供的信号转换方法包括：对RGB输入信号进行伽玛转换 处理生成RGB亮度输入值，根据RGB比例系数和RGB亮度输入值生成W亮 度输入值，根据RGB比例系数、RGB亮度输入值和W亮度输入值生成RGBW 输出信号，本实施例可在不改变功耗的前提下提高显示画面的亮度，从而 提高了显示画面的对比度，进而提高了画面的显示质量，以及可以在不改 变显示画面的显示亮度的前提下降低发光器件的功耗，从而提高了发光器 件的寿命，以及降低了驱动芯片的成本，进而降低了产品的制造成本。并 且本实施例由于降低了发光器件的功耗，从而降低了电源的制造成本，进 而降低了产品的制造成本。根据亮度缩放系数对RGBW亮度输出值进行缩 放处理生成缩放后RGBW亮度输出值，从而可进一步提高显示画面的亮度。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用 的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术 人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和 改进，这些变型和改进也视为本发明的保护范围。

Claims (23)

  1. 一种信号转换装置，其特征在于，包括：伽玛转换单元、亮度检 测单元和亮度处理单元；
    所述伽玛转换单元，用于对RGB输入信号进行伽玛转换处理，生成 RGB亮度输入值；
    所述亮度检测单元，用于根据RGB比例系数和所述RGB亮度输入值， 生成W亮度输入值；
    所述亮度处理单元，用于根据所述RGB比例系数、所述RGB亮度输 入值和所述W亮度输入值，生成RGBW输出信号。
  2. 根据权利要求1所述的信号转换装置，其特征在于，所述亮度处 理单元包括：亮度计算单元和反伽玛转换单元；
    所述亮度计算单元，用于根据所述RGB比例系数、所述RGB亮度输 入值和所述W亮度输入值，生成RGBW亮度输出值，并将所述RGBW亮度输 出值输出至所述反伽玛转换单元；
    所述反伽玛转换单元，用于根据所述RGBW亮度输出值，生成所述RGBW 输出信号。
  3. 根据权利要求2所述的信号转换装置，其特征在于，所述亮度处 理单元还包括：亮度缩放单元；
    所述亮度缩放单元，用于根据亮度缩放系数对RGBW最大亮度值进行 缩放处理，生成缩放后RGBW最大亮度值，并将所述缩放后RGBW最大亮度 值输出至所述伽玛转换单元和所述反伽玛转换单元，其中
    所述伽玛转换单元根据所述缩放后RGBW最大亮度值对RGB输入信号 进行伽玛转换处理，生成所述RGB亮度输入值，并将所述RGB亮度输入值 输出至所述亮度检测单元和所述亮度计算单元；
    所述反伽玛转换单元根据所述缩放后RGBW最大亮度值和所述RGBW 亮度输出值，生成所述RGBW输出信号。
  4. 根据权利要求1所述的信号转换装置，其特征在于，所述亮度处 理单元包括：亮度计算单元、亮度缩放单元和反伽玛转换单元；
    所述伽玛转换单元根据RGBW最大亮度值对RGB输入信号进行伽玛转 换处理，生成RGB亮度输入值，并将所述RGB亮度输入值输出至所述亮度 检测单元和所述亮度计算单元；
    所述亮度计算单元，用于根据所述RGB比例系数、所述RGB亮度输 入值和所述W亮度输入值，生成RGBW亮度输出值，并将所述RGBW亮度输 出值输出至所述亮度缩放单元；
    所述亮度缩放单元，用于根据亮度缩放系数对所述RGBW亮度输出值 进行缩放处理，生成缩放后RGBW亮度输出值，并将所述缩放后RGBW亮度 输出值输出至所述反伽玛转换单元；
    所述反伽玛转换单元，用于根据所述RGBW最大亮度值和所述缩放后 RGBW亮度输出值，生成所述RGBW输出信号。
  5. 根据权利要求3所述的信号转换装置，其特征在于，所述缩放后 RGBW最大亮度值包括缩放后R最大亮度值LRmax、缩放后G最大亮度值 LGmax、缩放后B最大亮度值LBmax和缩放后W最大亮度值LWmax，所述RGB 输入信号包括：R输入信号Ri、G输入信号Gi和B输入信号Bi，所述RGB 亮度输入值包括：R亮度输入值LR、G亮度输入值LG和B亮度输入值LB； 所述RGB亮度输入值的公式为：
    Figure PCTCN2014078070-appb-100001
    Figure PCTCN2014078070-appb-100002
    其中，n为所述RGB输入信号的位数，γ为伽玛值。
  6. 根据权利要求5所述的信号转换装置，其特征在于，所述RGBW 亮度输出值包括：R亮度输出值LR′、G亮度输出值LG′、B亮度输出值LB′和 W亮度输出值LW′，所述RGB比例系数包括：R比例系数RR、G比例系数RG 和B比例系数RB；所述RGBW亮度输出值分别为：LR′＝LR-LW×RR、 LG′＝LG-LW×RG、LB′＝LB-LW×RB、LW′＝LW，其中，LW为W亮度输入 值。
  7. 根据权利要求6所述的信号转换装置，其特征在于，所述RGBW 输出信号包括：R输出信号Ro、G输出信号Go、B输出信号Bo和W输出 信号Wo；
    所述RGBW输出信号分别为：
    Figure PCTCN2014078070-appb-100003
    Figure PCTCN2014078070-appb-100004
  8. 根据权利要求7所述的信号转换装置，其特征在于，所述亮度缩 放单元的亮度缩放系数为K，R最大亮度值为LR′max、G最大亮度值为LG′max、 B最大亮度值为LB′max和W最大亮度值为LW′max，其中，LRmax＝K×LR′max、 LGmax＝K×LG′max、LBmax＝K×LB′max、LWmax＝K×LW′max，从而：
    Figure PCTCN2014078070-appb-100005
    Figure PCTCN2014078070-appb-100006
  9. 根据权利要求4所述的信号转换装置，其特征在于，所述RGB输 入信号包括：R输入信号Ri、G输入信号Gi和B输入信号Bi，所述RGB亮 度输入值包括：R亮度输入值LR、G亮度输入值LG和B亮度输入值LB；所 述RGB亮度输入值的公式为：
    Figure PCTCN2014078070-appb-100007
    Figure PCTCN2014078070-appb-100008
    其中，n为所述RGB输入信号的位数，γ为伽玛值，LR′max 为R最大亮度值、LG′max为G最大亮度值、LB′max为B最大亮度值。
  10. 根据权利要求9所述的信号转换装置，其特征在于，所述RGBW 亮度输出值包括：R亮度输出值LR′、G亮度输出值LG′、B亮度输出值LB′和 W亮度输出值LW′，所述RGB比例系数包括：R比例系数RR、G比例系数RG 和B比例系数RB；所述RGBW亮度输出值分别为：LR′＝LR-LW×RR、 LG′＝LG-LW×RG、LB′＝LB-LW×RB、LW′＝LW，其中，LW为W亮度输入 值。
  11. 根据权利要求10所述的信号转换装置，其特征在于，所述RGBW 输出信号包括：R输出信号Ro、G输出信号Go、B输出信号Bo和W输出 信号Wo；
    所述RGBW输出信号分别为：
    Figure PCTCN2014078070-appb-100009
    Figure PCTCN2014078070-appb-100010
    其中，LW′max为W最大亮度值， LR1为缩放后R亮度输出值，LG1为缩放后G亮度输出值，LB1为缩放后B 亮度输出值和LW1为缩放后W亮度输出值。
  12. 根据权利要求11所述的信号转换装置，其特征在于，所述亮度 缩放单元的亮度缩放系数为1/K，其中，
    Figure PCTCN2014078070-appb-100011
    Figure PCTCN2014078070-appb-100012
    所述RGBW输出信号分别为：
    Figure PCTCN2014078070-appb-100013
    Figure PCTCN2014078070-appb-100014
  13. 根据权利要求6或10所述的信号转换装置，其特征在于，还包 括：RGB比例计算单元；
    所述RGB比例计算单元，用于根据RGBW色坐标计算出所述RGB比例 系数。
  14. 根据权利要求13所述的信号转换装置，其特征在于，所述RGBW 色坐标包括：R色坐标R(xR,yR)、G色坐标G(xG,yG)、B色坐标B(xB,yB)和 W色坐标W(xW,yW)；
    所述RGB比例系数的公式为：
    红色的比例系数
    Figure PCTCN2014078070-appb-100015
    绿色的比例系数
    Figure PCTCN2014078070-appb-100016
    蓝色的比例系数
    Figure PCTCN2014078070-appb-100017
    或 者
    红色的比例系数
    Figure PCTCN2014078070-appb-100018
    绿色的比例系数
    Figure PCTCN2014078070-appb-100019
    蓝色的比例系数
    Figure PCTCN2014078070-appb-100020
  15. 根据权利要求14所述的信号转换装置，其特征在于，所述亮度 检测单元根据所述RGB比例系数和所述RGB亮度输入值生成RGB亮度替换 值，并对RGB亮度替换值进行取最小值处理得出所述W亮度输入值。
  16. 根据权利要求15所述的信号转换装置，其特征在于，所述RGB 亮度替换值包括：R亮度替换值SR、G亮度替换值SG和B亮度替换值SB，
    所述RGB亮度替换值分别为：
    Figure PCTCN2014078070-appb-100021
    则所述W亮度输入值的公式为：LW＝MIN(SR、SG、SB)。
  17. 一种显示装置，其特征在于，包括：权利要求1至16中任一所 述的信号转换装置。
  18. 一种信号转换方法，其特征在于，包括以下步骤：
    步骤S1，对RGB输入信号进行伽玛转换处理，生成RGB亮度输入值；
    步骤S2，根据RGB比例系数和所述RGB亮度输入值，生成W亮度输 入值；和
    步骤S3，根据所述RGB比例系数、所述RGB亮度输入值和所述W亮 度输入值，生成RGBW输出信号。
  19. 根据权利要求18所述的信号转换方法，其特征在于，所述步骤 S3包括以下步骤：
    根据所述RGB比例系数、所述RGB亮度输入值和所述W亮度输入值， 生成RGBW亮度输出值；以及
    根据所述RGBW亮度输出值，生成所述RGBW输出信号。
  20. 根据权利要求19所述的信号转换方法，其特征在于，所述步骤 S1进一步包括：根据亮度缩放系数对RGBW最大亮度值进行缩放处理，生 成缩放后RGBW最大亮度值；以及
    根据所述缩放后RGBW最大亮度值对RGB输入信号进行伽玛转换处 理，生成RGB亮度输入值，并且
    所述步骤S3进一步包括：
    根据所述缩放后RGBW最大亮度值和所述RGBW亮度输出值，生成所 述RGBW输出信号。
  21. 根据权利要求18所述的信号转换方法，其特征在于，
    所述步骤S1进一步包括：根据RGBW最大亮度值对RGB输入信号进 行伽玛转换处理，生成RGB亮度输入值，并且
    所述步骤S3进一步包括：
    根据亮度缩放系数对所述RGBW亮度输出值进行缩放处理，生成缩放 后RGBW亮度输出值；以及
    根据所述RGBW最大亮度值和所述缩放后RGBW亮度输出值，生成所 述RGBW输出信号。
  22. 根据权利要求18至21任一所述的信号转换方法，其特征在于， 还包括以下步骤：
    根据RGBW色坐标计算出所述RGB比例系数。
  23. 根据权利要求18至21任一所述的信号转换方法，其特征在于， 所述步骤S2进一步包括：根据所述RGB比例系数和所述RGB亮度输入值 生成RGB亮度替换值，并对RGB亮度替换值进行取最小值处理得出所述W 亮度输入值。
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Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103700336B (zh) 2013-12-27 2017-03-01 京东方科技集团股份有限公司 信号转换装置、方法和显示装置
JP2015222400A (ja) * 2014-05-23 2015-12-10 株式会社ジャパンディスプレイ 表示装置、表示システム及び画像処理回路
CN105336288B (zh) * 2014-08-15 2018-02-16 Tcl集团股份有限公司 一种rgb信号到rgbw信号的转换方法、装置及电视
CN104410849B (zh) * 2014-10-21 2016-06-29 深圳市华星光电技术有限公司 图像数据处理方法及装置
US9401107B2 (en) 2014-12-31 2016-07-26 Shenzhen China Star Optoelectronics Technology Co., Ltd. Image data processing method and device thereof
CN104486608B (zh) * 2014-12-31 2016-07-20 深圳市华星光电技术有限公司 图像数据处理方法及装置
CN104575405B (zh) * 2015-02-04 2017-08-25 京东方科技集团股份有限公司 一种调节显示装置背光亮度的方法、显示装置
CN104952423A (zh) * 2015-07-03 2015-09-30 深圳市华星光电技术有限公司 一种图像显示方法以及显示系统
CN105263009B (zh) * 2015-09-14 2017-12-15 深圳市华星光电技术有限公司 一种图像的自适应转换方法
CN105575351B (zh) * 2016-02-26 2018-09-14 京东方科技集团股份有限公司 一种灰阶电压调试方法、装置及显示装置
CN105895005A (zh) * 2016-06-29 2016-08-24 京东方科技集团股份有限公司 显示驱动芯片、显示基板、显示装置及显示驱动方法
CN108898987B (zh) * 2018-07-31 2021-04-27 京东方科技集团股份有限公司 一种灰阶转换方法、灰阶转换装置及显示装置
JP2020144198A (ja) * 2019-03-05 2020-09-10 株式会社ジャパンディスプレイ 表示装置
US11971616B1 (en) * 2019-04-11 2024-04-30 PixelDisplay Inc. Apparatus and method for creating highly-functional meta-materials from luminescing nanoparticles
CN111048052A (zh) * 2019-12-30 2020-04-21 深圳Tcl新技术有限公司 显示控制方法、装置、设备及计算机存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101171594A (zh) * 2005-04-04 2008-04-30 克雷沃耶提公司 实现低成本全范围映射算法的系统和方法
CN101419771A (zh) * 2007-10-23 2009-04-29 Nec液晶技术株式会社 图像显示设备以及用于该图像显示设备的图像显示方法
US20120287146A1 (en) * 2011-05-13 2012-11-15 Candice Hellen Brown Elliott Method for selecting backlight color values
CN103218988A (zh) * 2013-03-25 2013-07-24 京东方科技集团股份有限公司 一种rgb信号到rgbw信号的图像转换方法及装置
CN103700336A (zh) * 2013-12-27 2014-04-02 京东方科技集团股份有限公司 信号转换装置、方法和显示装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100943273B1 (ko) * 2003-05-07 2010-02-23 삼성전자주식회사 4-컬러 변환 방법 및 그 장치와 이를 이용한 유기전계발광표시장치
JP4509159B2 (ja) * 2007-09-27 2010-07-21 シャープ株式会社 透過型液晶表示装置
JP5278730B2 (ja) * 2008-04-16 2013-09-04 Ｎｌｔテクノロジー株式会社 コントローラ、ホールド型表示装置、電子機器、ホールド型表示装置の信号調整方法
JPWO2012124003A1 (ja) * 2011-03-16 2014-07-17 パナソニック株式会社 表示装置および表示方法
KR20150022235A (ko) * 2013-08-22 2015-03-04 삼성디스플레이 주식회사 색 보상 장치와 이를 포함하는 표시 장치, 및 색 보상 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101171594A (zh) * 2005-04-04 2008-04-30 克雷沃耶提公司 实现低成本全范围映射算法的系统和方法
CN101419771A (zh) * 2007-10-23 2009-04-29 Nec液晶技术株式会社 图像显示设备以及用于该图像显示设备的图像显示方法
US20120287146A1 (en) * 2011-05-13 2012-11-15 Candice Hellen Brown Elliott Method for selecting backlight color values
CN103218988A (zh) * 2013-03-25 2013-07-24 京东方科技集团股份有限公司 一种rgb信号到rgbw信号的图像转换方法及装置
CN103700336A (zh) * 2013-12-27 2014-04-02 京东方科技集团股份有限公司 信号转换装置、方法和显示装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2953120A4 *

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