WO2022116002A1 - 数据处理方法及装置、显示装置 - Google Patents

数据处理方法及装置、显示装置 Download PDF

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Publication number
WO2022116002A1
WO2022116002A1 PCT/CN2020/133146 CN2020133146W WO2022116002A1 WO 2022116002 A1 WO2022116002 A1 WO 2022116002A1 CN 2020133146 W CN2020133146 W CN 2020133146W WO 2022116002 A1 WO2022116002 A1 WO 2022116002A1
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WIPO (PCT)
Prior art keywords
backlight
row
pixel
data
units
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PCT/CN2020/133146
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English (en)
French (fr)
Inventor
饶天珉
吴聪睿
马希通
Original Assignee
京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/771,878 priority Critical patent/US20240169937A1/en
Priority to CN202080003123.4A priority patent/CN114846536B/zh
Priority to EP20963850.1A priority patent/EP4152309A4/en
Priority to PCT/CN2020/133146 priority patent/WO2022116002A1/zh
Publication of WO2022116002A1 publication Critical patent/WO2022116002A1/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
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/0613—The adjustment depending on the type of the information to be displayed
    • G09G2320/062—Adjustment of illumination source parameters
    • 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
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a data processing method and device, and a display device.
  • a large-size, high-brightness display device may, for example, use a direct-lit backlight module to improve the brightness of the display device.
  • the direct type backlight module generally includes more light-emitting diodes (Light-Emitting Diode, LED), and can control the luminous brightness of the backlight module by local dynamic dimming technology (Local Dimming).
  • a data processing method is provided.
  • the data processing method is applied in a display device.
  • the display device includes a display panel, a backlight module, a first storage space and a second storage space.
  • the display panel and the backlight module are arranged opposite to each other.
  • the display panel includes a plurality of pixels.
  • the backlight module includes a plurality of backlight units, each of which corresponds to at least one pixel position.
  • the backlight data set includes first backlight values of at least one row of backlight units, the at least one row of backlight units includes an M-th row of backlight units, and M is a positive integer
  • the data processing method includes: During the N-1th sliding window period, use the sliding window to sample the backlight data set, and store the Nth backlight data subset obtained by sampling into the first storage space; the N-1 is a positive integer
  • the Nth sliding window period utilize the described sliding window after the movement to sample the backlight data set, and store the N+1th backlight data subset obtained by sampling into the second storage space, and
  • a compensation coefficient of at least one pixel corresponding to the N th backlight data subset in each pixel corresponding to the M th row of backlight units is calculated.
  • the data processing method further includes: in the N+1th sliding window period, sampling the backlight data set by using the moved sliding window, and sampling the N+th 2 backlight data subsets are stored in the first storage space, and according to the N+1 th backlight data subset, it is calculated in each pixel corresponding to the M th row of backlight units, and the Compensation coefficient of at least one pixel corresponding to one backlight data subset.
  • the data processing method further includes: in the last sliding window period corresponding to the backlight data set, according to the last backlight data subset of the backlight data set, calculate the data in the Mth row In each pixel corresponding to the backlight unit, the compensation coefficient of at least one pixel corresponding to the last backlight data subset, and using the moved sliding window to sample the next backlight data set of the backlight data set, A first subset of backlight data for the next set of backlight data is obtained.
  • the at least one row of backlight units is a multi-row backlight unit
  • the multiple rows of backlight units include at least three rows of backlight units with the M-th row of backlight units as a middle row.
  • the backlight data set when the M-th row of backlight units is the first row of backlight units, the backlight data set includes: at least one row of virtual backlight values sequentially arranged along a column direction in which the plurality of backlight units are arranged , the first backlight value of the first row of backlight units and the first backlight value of the second row of backlight units.
  • the number of virtual backlight values in each row is equal to the number of first backlight values of the backlight units in the first row; and the virtual backlight values in the at least one row are zero.
  • the backlight units corresponding to the Nth backlight data subset are arranged in an array, and at least one pixel corresponding to the Nth backlight data subset corresponds to the backlight unit at the center of the array of at least one pixel.
  • the data processing method further includes: according to the compensation coefficient of at least one pixel corresponding to the Nth backlight data subset, and a The initial pixel value of the at least one pixel is obtained, and the compensated pixel value of the at least one pixel is obtained.
  • the first backlight value of each backlight unit corresponding to the one frame of image is calculated according to the initial pixel value of each pixel of the previous frame of the one frame of image.
  • the first backlight value of each backlight unit corresponding to the one frame of image is configured to drive the backlight module.
  • calculating, in each pixel corresponding to the M th row backlight unit, at least one pixel corresponding to the N th backlight data subset Compensation factor including: According to the formula A compensation coefficient for the at least one pixel is obtained.
  • G is the compensation coefficient of one pixel
  • ⁇ is the gamma value of gamma correction
  • B max is the maximum first backlight value of the backlight unit corresponding to the one pixel
  • B psf is the second backlight corresponding to the one pixel.
  • the second backlight value corresponding to the one pixel is the first backlight value in the Nth backlight data subset and the corresponding position of each backlight unit corresponding to the Nth backlight data subset at the corresponding position of the one pixel The product between the optical diffusion coefficients.
  • a data processing apparatus is provided.
  • the data processing device is applied in a display device.
  • the display device includes: a display panel, a backlight module, a first storage space and a second storage space.
  • the display panel and the backlight module are arranged opposite to each other.
  • the display panel includes a plurality of pixels.
  • the backlight module includes a plurality of backlight units, each of which corresponds to at least one pixel position.
  • the backlight data set includes first backlight values of at least one row of backlight units, the at least one row of backlight units includes an M-th row of backlight units, and M is a positive integer
  • the data processing device is configured to , in the N-1th sliding window period, use the sliding window to sample the backlight data set, and store the Nth backlight data subset obtained by sampling into the first storage space; and, in the Nth During the sliding window period, use the moved sliding window to sample the backlight data set, store the N+1 th backlight data subset obtained by sampling into the second storage space, and store the N+1 th backlight data subset obtained by sampling into the second storage space, and store the N+1 th backlight data subset according to the of backlight data subsets, and calculate the compensation coefficient of at least one pixel corresponding to the Nth backlight data subset in each pixel corresponding to the M-th row of backlight units.
  • the N-1 is a positive integer.
  • the data processing apparatus is further configured to, within the N+1th sliding window period, use the moved sliding window to sample the backlight data set, and use the moved sliding window to sample the backlight data set.
  • N+2 backlight data subsets are stored in the first storage space, and according to the N+1 th backlight data subset, it is calculated in each pixel corresponding to the M th row of backlight units, which is the same as the The compensation coefficient of at least one pixel corresponding to the N+1 backlight data subsets.
  • the data processing apparatus is further configured to, within the last sliding window period corresponding to the backlight data set, calculate the calculation in the first backlight data subset according to the last backlight data subset of the backlight data set.
  • the compensation coefficient of at least one pixel corresponding to the last subset of backlight data is used, and the next backlight data set of the backlight data set is performed using the moved sliding window. Sampling to obtain a first subset of backlight data of the next set of backlight data.
  • the data processing apparatus is further configured to, within the Nth sliding window period, according to the compensation coefficient of at least one pixel corresponding to the Nth backlight data subset, and one frame The initial pixel value of the at least one pixel in the image, and the compensated pixel value of the at least one pixel is obtained.
  • a data processing apparatus is provided.
  • the data processing device is applied to a display device.
  • the data processing apparatus includes a memory and a processor.
  • One or more computer programs are stored in the memory.
  • the processor is coupled to the memory.
  • the processor is configured to execute the computer program, so that the display device implements the data processing method described in any one of the above embodiments.
  • a data processing apparatus is provided.
  • the data processing device is a chip.
  • the chip is configured to implement the data processing method as described in any of the above embodiments.
  • a display device in yet another aspect, includes a display panel, a backlight module, a first storage space, a second storage space and a data processing device.
  • the data processing apparatus is the data processing apparatus described in any one of the above embodiments.
  • the display panel includes a plurality of pixels.
  • the backlight module and the display panel are arranged opposite to each other.
  • the backlight module includes a plurality of backlight units, each of which corresponds to at least one pixel position.
  • the first storage space and the second storage space are located within at least one cache.
  • a non-transitory computer-readable storage medium stores computer program instructions, which, when executed on a computer, cause the computer to execute the data processing method described in any one of the foregoing embodiments.
  • a computer program product includes computer program instructions that, when executed on a computer, cause the computer to execute the data processing method according to any one of the above embodiments.
  • a computer program When the computer program is executed on a computer, the computer program causes the computer to execute the data processing method described in any of the above embodiments.
  • FIG. 1 is a structural diagram of a display device according to some embodiments.
  • FIG. 2 is a structural diagram of a data processing apparatus according to some embodiments.
  • FIG. 3 is another structural diagram of a display device according to some embodiments.
  • FIG. 4 is another structural diagram of a display device according to some embodiments.
  • FIG. 5 is a schematic diagram of obtaining an optical diffusion coefficient of a backlight unit according to some embodiments.
  • FIG. 6 is a process diagram of a data processing method according to some embodiments.
  • FIG. 7 is another process diagram of a data processing method according to some embodiments.
  • FIG. 8 is yet another process diagram of a data processing method according to some embodiments.
  • FIG. 9 is a schematic diagram of a backlight data set according to some embodiments.
  • FIG. 10 is another schematic diagram of a backlight data set according to some embodiments.
  • 11A is a schematic diagram of each backlight unit corresponding to a subset of backlight data according to some embodiments.
  • 11B is a schematic diagram of a subset of backlight data according to some embodiments.
  • FIG. 12 is a schematic diagram of determining the relative positional relationship between a pixel and a backlight unit according to some embodiments
  • FIG. 13 is yet another process diagram of a data processing method according to some embodiments.
  • FIG. 14 is yet another process diagram of a data processing method according to some embodiments.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • plural means two or more.
  • the expressions “coupled” and “connected” and their derivatives may be used.
  • the term “connected” may be used in describing some embodiments to indicate that two or more components are in direct physical or electrical contact with each other.
  • the term “coupled” may be used in describing some embodiments to indicate that two or more components are in direct physical or electrical contact.
  • the terms “coupled” or “communicatively coupled” may also mean that two or more components are not in direct contact with each other, yet still co-operate or interact with each other.
  • the embodiments disclosed herein are not necessarily limited by the content herein.
  • the term “if” is optionally construed to mean “when” or “at” or “in response to determining” or “in response to detecting,” depending on the context.
  • the phrases “if it is determined that" or “if a [statement or event] is detected” are optionally interpreted to mean “in determining" or “in response to determining" or “on detection of [recited condition or event]” or “in response to detection of [recited condition or event]”.
  • Embodiments of the present disclosure provide a display device.
  • the display device may be a display, and may also be a product including a display, such as a television, a computer (all-in-one or a desktop), a computer, a tablet, a mobile phone, an electronic screen, etc.
  • the display device may have a higher resolution, for example, an 8K display device, which implements 8K image display.
  • the display device 500 includes a display panel 100 , a backlight module 200 , a data processing device 300 , a first storage space 410 and a second storage space 420 .
  • the display panel 100 includes a plurality of pixels Q.
  • the resolution of the display panel 100 is 7680 ⁇ 4320.
  • the backlight module 200 includes a plurality of backlight units (ie, backlight partitions) 210 .
  • the number of the plurality of backlight units is about twenty thousand.
  • the plurality of pixels Q may be that the display panel 100 includes a part of the pixels Q, or may be all the pixels Q.
  • the plurality of backlight units 210 may be that the backlight module 200 includes a part of the backlight units 210 , or may be all of the backlight units 210 .
  • a plurality of pixels Q may be arranged in an array.
  • the pixels arranged in a row in the X direction are referred to as a row of pixels
  • the pixels arranged in a row in the Y direction are referred to as a column of pixels.
  • the arrangement of the plurality of backlight units 210 in the backlight module 200 is not limited.
  • a plurality of backlight units 210 are arranged in an array.
  • the backlight units arranged in a row along the X direction in FIG. 4 are a row of backlight units
  • the X direction is the row direction in which the backlight units are arranged
  • the backlight units arranged in a row along the Y direction in FIG. 4 are a row of backlight units
  • the The Y direction is the column direction in which the backlight units are arranged.
  • Each backlight unit corresponds to at least one pixel location.
  • each backlight unit corresponds to a plurality of pixel positions, and when the plurality of pixels are arranged in an array, among the plurality of pixels corresponding to each backlight unit, the number of pixels in each row is the same as the number of pixels in each column. numbers are equal.
  • a plurality of pixels corresponding to each backlight unit are arranged in an array of 40 rows and 40 columns.
  • the data processing apparatus 300 includes a memory 301 and a processor 302 .
  • the memory 301 is coupled to the processor 302 .
  • One or more computer programs executable on the processor 302 are stored in the memory 301 .
  • the display device 500 implements the data processing method described in any of the following embodiments.
  • the above-mentioned processor 302 may be one processor, or may be a collective term for multiple processing elements.
  • the processor 302 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the present disclosure Implementing integrated circuits, such as one or more microprocessors.
  • the above-mentioned memory 301 may be a memory, or may be a collective name of a plurality of storage elements, and is used to store executable program codes and the like.
  • the memory 301 may include random access memory (Random Access Memory, RAM), and may also include non-volatile memory (non-volatile memory), such as disk memory, flash memory (Flash), and the like.
  • the memory 301 is used for storing the application code for executing the solution of the present disclosure, and the execution is controlled by the processor 320 .
  • the processor 302 is configured to execute the application program code stored in the memory 301 to control the display device 500 to implement the data processing method provided by any of the following embodiments of the present disclosure.
  • the data processing apparatus 300 may be a chip.
  • the chip is configured to implement the data processing method as in any of the above embodiments.
  • the chip may be a programmable device.
  • the programmable device is CPLD (Complex Programmable Logic Device, complex programmable logic device), EPLD (Erasable Programmable Logic Device, erasable programmable logic device) or FPGA (field-programmable gate array, field programmable gate array) ).
  • the first storage space and the second storage space are located within at least one cache.
  • the first storage space and the second storage space are located in the same cache (refer to the cache 400 in FIG. 3 , the cache 400 includes the first storage space 410 and the second storage space 420 ), that is, the first storage space and the second storage space Storage spaces are different storage spaces within the same cache.
  • the first storage space and the second storage space are located in two caches respectively, that is, the first storage space is located in one cache of the two caches, and the second storage space is located in the other cache of the two caches .
  • the cache may be a random access memory or a double-rate synchronous dynamic random access memory (Double Data Rate Synchronous Dynamic Random Access Memory, DDR SRAM).
  • DDR SRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • the display device further includes a driver chip (Driver IC) and a timing controller (Timming Controller, T-CON).
  • the driving chip is bound to the display panel, and the control chip is coupled to the timing controller.
  • the data processing device transmits the image data (for example, the image data includes the pixel value of each pixel; for example, the pixel value is the compensation pixel value) to the timing controller, and the timing controller outputs the timing control signal to the driver chip, and the driver chip
  • the driving signal is output to the display panel according to the timing control signal, so as to drive the display panel to display.
  • the backlight module further includes a lamp board, where a plurality of light emitting devices and a backlight control circuit coupled with the plurality of light emitting devices are arranged on the light board.
  • the data processing device transmits the first backlight value of each backlight unit to the backlight control circuit
  • the backlight control circuit converts the first backlight value into a corresponding backlight control signal (eg, a PWM signal), and sends it to each backlight unit.
  • the light-emitting devices transmit corresponding backlight control signals to control the light-emitting devices to emit light.
  • the backlight module adopts local dynamic dimming technology.
  • the embodiments of the present disclosure do not limit the number of light-emitting devices provided in the backlight unit, and can be designed according to actual conditions.
  • the number of light-emitting devices L provided in one backlight unit is greater than or equal to two (for example, in the backlight unit 210 in FIG. 5, the number of light-emitting devices is four, which are L1-L4 respectively), and at least two light-emitting devices The devices are uniformly distributed within the backlight unit.
  • the light emitting device may employ inorganic light emitting devices including micro light emitting diodes (micro LEDs) or mini light emitting diodes (mini LEDs).
  • An embodiment of the present disclosure provides a data processing method, which is applied to the above-mentioned display device.
  • the execution body of the data processing method may be the display device, or one or some components of the display device.
  • it may be The data processing device in the text.
  • the display device may obtain the first backlight value corresponding to the multiple backlight units according to the image data corresponding to the image to be displayed, the image data including the initial pixel values of the multiple pixels. For example, according to the initial pixel value of each pixel corresponding to each backlight unit, the first backlight value of the backlight unit is obtained.
  • the display device further includes a storage part.
  • the storage component may be a memory, such as a DDR.
  • the storage component is configured to store the first backlight value and the initial pixel value.
  • the first backlight value and the initial pixel value are located in different storage spaces, respectively.
  • each pixel includes a plurality of sub-pixels, for example, the plurality of sub-pixels are red sub-pixels, green sub-pixels and blue sub-pixels.
  • the first image data contains the gray scale of each sub-pixel in each pixel.
  • the initial pixel value of the pixel can be obtained according to the gray scale of each sub-pixel in the pixel.
  • the RGB data is converted into YUV data. Taking the BT709 standard as an example, the pixel's gray level can be obtained.
  • Brightness Y 0.2126R+0.7152G+0.0722B, at this time, the brightness Y value of the pixel can be regarded as the initial pixel value of the pixel.
  • the embodiment of the present disclosure does not limit the conversion standard of RGB data and YUV data, and can be selected according to the actual situation.
  • the pixel average value of the backlight unit of J times is obtained to obtain the first backlight value of the backlight unit.
  • the pixel average value of the backlight unit is the average value of initial pixel values of each pixel corresponding to the backlight unit, and 1 ⁇ J ⁇ 2.
  • J can be taken as 1.5.
  • each backlight unit corresponds to 1600 pixels, and the 1600 pixels are arranged in an array of 40 rows and 40 columns, the average value of the sum of the initial pixel values of the 1600 pixels that are J times is calculated to obtain the backlight unit.
  • the first backlight value of the backlight unit may be a unitless value, and the value of the value only represents the relative brightness of the backlight unit.
  • the first backlight value of the backlight unit can be used to control the size of the drive current, that is, the first backlight value can be regarded as the backlight drive value, the backlight drive value has a linear relationship with the drive current, and the drive current has an approximately linear relationship with the luminous brightness.
  • the magnitude of the driving current represents the magnitude of the relative brightness of the backlight unit.
  • REXT is the external resistor of the chip
  • GCG[A:9] and GCG[8: 6] are all preset register values
  • Code is the backlight drive value
  • I OUT ICG is the drive current.
  • the present disclosure may also use different standards for conversion, which is not limited here.
  • the first backlight value of the backlight unit may also be the actual brightness of the backlight unit.
  • the first backlight value (backlight driving value) BL V of the backlight unit under a certain brightness for example, Y is a certain gray level P
  • the first backlight value (backlight driving value) BL V under the maximum light-emitting brightness of the display device for example, Y is the maximum gray level 255.
  • the backlight driving value of the display device 500 at the maximum light-emitting brightness may be 255 when the maximum value of Y is 255, and the light-emitting brightness of each backlight unit is adjusted, and the obtained light-emitting brightness of the display device 500 reaches the maximum brightness (for example, 1000nit) The corresponding backlight drive value.
  • the first backlight values of the plurality of backlight units may be divided into a plurality of sets of backlight data.
  • one backlight data set includes the first backlight values of at least one row of the backlight units.
  • one backlight data set may include first backlight values of multiple rows of backlight units; for example, one backlight data set and the next backlight data set of the one backlight data set may have first backlight values of the same row of backlight units.
  • the backlight data set includes first backlight values of at least one row of backlight units, and at least one row of backlight units includes an M-th row of backlight units, where M is a positive integer.
  • the M-th row of backlight units is any row of backlight units among the plurality of backlight units.
  • the data processing method includes:
  • N-1 is a positive integer, that is, N is an integer greater than 1.
  • the Nth sliding window period use the moved sliding window to sample the backlight data set, store the N+1th backlight data subset obtained by sampling into the second storage space, and store the N+1th backlight data subset obtained by sampling into the second storage space, and according to the Nth backlight data subset Set, calculate the compensation coefficient of at least one pixel corresponding to the Nth backlight data subset in each pixel corresponding to the Mth row backlight unit.
  • the N-1th sliding window period corresponds to the Nth backlight data subset
  • the Nth backlight data subset corresponds to the first backlight value of at least one backlight unit
  • at least one backlight unit includes the Mth row of backlight units. of at least one backlight unit.
  • the backlight unit at the center of the array formed by the multiple backlight units is located at the center of the array.
  • the period of sampling to obtain the Nth backlight data subset is different from the period of calculating the compensation coefficient of at least one pixel corresponding to the Nth backlight data subset according to the Nth backlight data subset, and is staggered.
  • the sliding window corresponds to the Nth backlight data subset, for example, the position of the sliding window is at the position of the Nth backlight data subset, so that in the N-1th During the sliding window period, the Nth backlight data subset is obtained by sampling the sliding window; in the Nth sliding window period, the sliding window corresponds to the N+1th backlight data subset, for example, the position of the sliding window is at the N+1th At the position of the number of backlight data subsets, in this way, in the Nth sliding window period, the N+1th backlight data subset is obtained by sampling the sliding window.
  • each backlight unit corresponding to the Nth backlight data subset is arranged in an array, and the above-mentioned at least one pixel corresponding to the Nth backlight data subset is at least one pixel corresponding to the backlight unit at the center of the array. .
  • the Nth backlight data subset obtained by the sliding window sampling, in the Nth sliding window period calculate the compensation coefficient of at least one pixel, the backlight corresponding to the at least one pixel position
  • the unit is located at the center of the backlight unit array corresponding to the Nth backlight data subset, and the backlight unit is located in the Mth row of backlight units.
  • part (A) in FIG. 7 shows that for a backlight data set, in each sliding window period, the subset of backlight data obtained through the moving sliding window, part (B) in FIG.
  • each backlight unit 210 corresponding to the backlight data set in section A wherein each backlight unit corresponding to the Nth backlight data subset is in an array of 5 rows and 5 columns, and at least one pixel corresponding to the Nth backlight data subset is At least one pixel corresponding to the backlight unit 210 at the center of the array of 5 rows and 5 columns (ie, the backlight unit of the 3rd row and 3rd column in the array of 5 rows and 5 columns).
  • the compensation coefficient of at least one pixel corresponding to the backlight unit in the 3rd row and 3rd column in the array of 5 rows and 5 columns corresponding to the Nth backlight data subset is calculated.
  • the multiple pixels are arranged in an array, and in the Nth sliding window period, the compensation coefficient of one row of pixels among the multiple pixels corresponding to one backlight unit can be calculated.
  • the backlight unit is located at the center of the backlight unit array corresponding to the Nth backlight data subset, and the one backlight unit is located in the Mth row of backlight units.
  • the backlight unit in the 3rd row and 3rd column in the array of 5 rows and 5 columns of backlight units corresponding to the Nth backlight data subset the backlight unit in the 3rd row and 3rd column corresponds to 40 rows and 40 columns of pixels.
  • the compensation coefficient of one row of pixels ie, one row of 40-column pixels
  • the backlight unit of the third row and third column can be calculated.
  • the compensation coefficient of a row of pixels corresponding to one backlight unit is calculated, and in the N+1th sliding window period, the compensation coefficient of a row of pixels corresponding to another backlight unit is calculated.
  • the unit and the other backlight unit are two adjacent columns of backlight units in the same row of backlight units, and the row of pixels corresponding to the one backlight unit and the row of pixels corresponding to the other backlight unit are consecutively arranged pixels in the same row of pixels .
  • the pixel position corresponding to the first column of pixels in the next row of pixels in the row of pixels is The backlight data subset corresponding to the first backlight value of the backlight unit is sampled to calculate the compensation coefficient of the first column of pixels in the next row of pixels in the row of pixels according to the backlight data subset in the next sliding window period.
  • the backlight data subset corresponding to the first backlight value of the backlight unit corresponding to the pixel position of the first column of pixels in one row is the same as the one in the next row of pixels in the row of pixels.
  • the backlight data subsets corresponding to the first backlight values of the backlight units corresponding to the pixel positions of the first column of are the same.
  • the backlight unit is in an array of 108 rows and 192 columns.
  • the 192nd backlight data subset corresponding to the M-th row of backlight units is obtained by sampling, and the 192nd backlight data subset includes the first backlight values of multiple backlight units, and the multiple backlight units are based on the number of the backlight units.
  • the 192nd backlight unit of the M rows of backlight units is an array; in the 192nd sliding window period, the 193rd backlight data subset corresponding to the Mth row of backlight units is sampled to obtain the 193rd backlight data subset.
  • the plurality of backlight units is an array centered on the first backlight unit of the M-th row of backlight units, and is based on the 192nd sampling obtained in the 191st sliding window period.
  • the compensation coefficient is calculated for the first row of pixels in the multi-row pixels corresponding to the 192nd backlight unit; in the 193rd sliding window period, the 194th backlight data corresponding to the Mth row of backlight units is obtained by sampling Subset, the 194th backlight data subset includes the first backlight value of a plurality of backlight units, and the plurality of backlight units is an array centered on the second backlight unit of the M-th row of backlight units, and according to the 192nd For the 193rd subset of backlight data sampled in the sliding window period, the compensation coefficient is calculated for the second row of pixels in the multi-row pixels corresponding to the first backlight unit; in the 194th sliding window period, the The 195th backlight data subset corresponding to the M-th row of backlight units, the 195th backlight data subset includes the first backlight values of multiple backlight units, and the multiple backlight units are the third backlight of the M-th row of backlight units.
  • the array is centered on the unit, and according to the 194th backlight data subset sampled in the 193rd sliding window period, the compensation coefficient is calculated for the second row of pixels in the multiple rows of pixels corresponding to the second backlight unit.
  • the third backlight data subset corresponding to the M-th row of backlight units is obtained by sampling, and the third backlight data subset includes first backlight values of multiple backlight units, and multiple backlight data subsets.
  • the backlight unit is an array centered on the third backlight unit of the M-th row of backlight units, and the third backlight data subset obtained by sampling in the second sliding window period is the same as that in the 194th sliding window period.
  • the resulting 195th backlight data subset is the same.
  • the backlight data set in the process of sampling the first backlight values of the plurality of backlight units, is first retrieved from a memory (eg, DDR) that stores the first backlight values of all the backlight units, and stored in a storage space.
  • the backlight data set is loaded in, and the backlight data set includes the first backlight values of the multiple rows of backlight units, and then the sliding window is used to sample the backlight data set formed by the loaded first backlight values of the multiple rows of backlight units to obtain each Backlight data subset.
  • a memory eg, DDR
  • the backlight data set is loaded in, and the backlight data set includes the first backlight values of the multiple rows of backlight units, and then the sliding window is used to sample the backlight data set formed by the loaded first backlight values of the multiple rows of backlight units to obtain each Backlight data subset.
  • one row of backlight units includes 192 columns of backlight units
  • one backlight data set includes the first backlight values of 5 rows of backlight units
  • the backlight data set before sampling the backlight data set, it is necessary to First load the backlight data set, that is, load the first backlight values of 5 rows of backlight units, that is, load the first backlight values of 5 ⁇ 192 backlight units, and then use the sliding window to load the 5 ⁇ 192 backlight units.
  • the backlight data set constituted by the first backlight value is sampled. In this way, when the data volume of the backlight data set is relatively large, additional storage resources will be occupied and the cost will be increased. And, if the time to load the first backlight value of one backlight unit is one clock cycle, the time to load the first backlight value of the five-line backlight unit is 5 ⁇ 192 clock cycles.
  • the backlight data set includes the first backlight value of at least one row of backlight units, at least one row of backlight units includes the Mth row of backlight units, and the Nth backlight data subset obtained by sampling in the Nth sliding window period , calculate the compensation coefficient of at least one pixel corresponding to the N-th backlight data subset in each pixel corresponding to the backlight unit of the M-th row, so that within the sliding window period for calculating the compensation coefficient of at least one pixel, it is necessary to wait for the The compensation coefficient of at least one pixel is calculated only after the corresponding backlight data subset is obtained, which makes the data processing time longer.
  • the backlight data subset corresponding to the pixel compensation coefficient calculated in the next sliding window period can be obtained.
  • the obtained backlight data subset can be directly It is not necessary to wait for the backlight data subset to be obtained and then perform the calculation, so that the process of calculating the compensation coefficient of at least one pixel corresponding to one backlight unit and sampling the backlight data subset corresponding to the next backlight unit can be performed synchronously. , which saves the time of data processing and improves the efficiency of data processing.
  • the backlight data set does not need to be loaded into additional storage space before sampling the backlight data set according to the embodiment of the present disclosure, and the backlight data set can be directly loaded from the memory (eg DDR) Sampling the data set can save storage resources; and, compared with the part (A) in FIG. 8 , in the process of sampling the backlight data, part (B) in FIG. This results in a delay in the data processing process, thereby shortening the data processing time and improving the data processing efficiency.
  • the memory eg DDR
  • the embodiments of the present disclosure provide a data processing method, in which, in the N-1th sliding window period, the backlight data set is sampled by using the sliding window, and the Nth backlight data subset obtained by sampling is stored in the first storage.
  • the Nth sliding window period use the moved sliding window to sample the backlight data set, store the N+1th backlight data subset obtained by sampling into the second storage space, and store the N+1th backlight data subset obtained by sampling into the second storage space, and according to the Nth backlight data subset Set, calculate the compensation coefficient of at least one pixel corresponding to the Nth backlight data subset in each pixel corresponding to the Mth row backlight unit.
  • the backlight data subset corresponding to the calculation of the pixel compensation coefficient in the next sliding window period can be obtained.
  • the obtained backlight data subset can be obtained directly Calculating the pixel compensation coefficient does not need to wait for the backlight data subset to be obtained before performing the calculation, and the process of calculating the compensation coefficient of at least one pixel corresponding to one backlight unit and sampling the backlight data subset corresponding to the next backlight unit can be performed synchronously , which saves the time of data processing and improves the efficiency of data processing.
  • the embodiment of the present disclosure does not need to store the backlight data set through additional storage space before sampling the backlight data subset, which can avoid the time consumed for storing the backlight data set, avoid the storage space required for storing the backlight data set, and save energy. storage resources.
  • At least one row of backlight units corresponding to the backlight data set is one row of backlight units.
  • one backlight data set includes the first backlight value of the M-th row of backlight units; the other backlight data set includes the M+1-th row of backlight units.
  • the first backlight value, the other backlight data set may be the one The next backlight data set for the backlight data set.
  • At least one row of backlight units corresponding to the backlight data set is two rows of backlight units.
  • the two rows of backlight units include an M-th row of backlight units and an M+1-th row of backlight units.
  • the M-th backlight data set includes the first backlight value of the M-th row of backlight units and the M+1-th row of backlight units
  • the M+1-th backlight data set includes the M+1-th row The first backlight value of the backlight unit and the first backlight value of the M+2 row backlight unit.
  • the first backlight data set includes the first backlight value of the first row of backlight units and the first backlight value of the second row of backlight units
  • the second backlight data set includes the second row of backlights The first backlight value of the unit and the first backlight value of the 3rd row backlight unit.
  • At least one row of backlight units corresponding to the backlight data set is multiple rows of backlight units, and the multiple rows of backlight units include at least three rows of backlight units with the M-th row of backlight units as the middle row. For example, at least three rows of backlight units have an odd number of rows.
  • the at least three rows of backlight units with the M th row of backlight units as the middle row refers to the rows of backlight units located on opposite sides of the M th row of backlight units in the at least three rows of backlight units along the column direction of the backlight unit arrangement.
  • the numbers are the same, each with at least one row.
  • the number of rows of at least three rows of backlight units is W
  • W is an odd number greater than or equal to 3
  • the M-th row of backlight units is the (W+1)/2-th row of the W rows of backlight units.
  • the number of rows of the backlight units located on opposite sides of the backlight unit in the M-th row of the at least three rows of backlight units is (W-1)/2 rows.
  • the M-th row of backlight units is the middle row of three rows of backlight units, that is, the M-th row of backlight units is the second row of backlight units in the three rows of backlight units, and along the column direction of the backlight units, three
  • the backlight unit is the third row of backlight units in the five rows of backlight units.
  • the number of rows of backlight units located on opposite sides of the M-th row of backlight units in the five rows of backlight units along the column direction of the backlight units is two rows.
  • At least three rows of backlight units are distributed continuously.
  • at least one row of backlight units is three rows of backlight units
  • the three rows of backlight units include the second row of backlight units and the third row of backlight units.
  • the M th backlight data set (that is, the 3rd backlight data set) includes the first pixel values of the 2nd row to the 4th row backlight unit; the M+1 row backlight unit is the th
  • at least three rows of backlight units include the third row of backlight units, the fourth row of backlight units, and the fifth row of backlight units. set) includes the first pixel values of the backlight units in the 3rd row to the 5th row.
  • the backlight unit is the middle row of the backlight unit from the 1st row to the 5th row
  • the M th backlight data set (that is, the 3rd backlight data set) includes the first pixel value of the 1st row to the 5th row backlight unit
  • the M+1 th row of backlight units is the 4th row of backlight units
  • at least three rows of backlight units include the 2nd to 6th rows of backlight units.
  • the M+1 th backlight data set (that is, the fourth backlight unit A data set) includes the first pixel values of the backlight units in the 2nd row to the 6th row.
  • a backlight data set includes the first backlight values of at least two rows of backlight units
  • the first backlight values of the at least two rows of backlight units are arranged in sequence;
  • the column directions in which the plurality of backlight units are arranged are sequentially arranged.
  • at least two rows of backlight units include the first backlight values of the first to fifth rows of backlight units, along the Y direction in FIG.
  • the first backlight value of the 2 rows of backlight units, the first backlight value of the 3rd row of backlight units, the first backlight value of the 4th row of backlight units and the first backlight value of the 5th row of backlight units are arranged in sequence.
  • the first backlight value of each backlight unit in each row of backlight units is arranged along the row direction in which the plurality of backlight units are arranged.
  • the backlight data set when the M-th row of backlight units is the first row of backlight units (ie, the first row of backlight units), the backlight data set includes: at least one row of virtual backlights sequentially arranged along the column direction in which the plurality of backlight units are arranged. value, the first backlight value of the first row of backlight units, and the first backlight value of the second row of backlight units.
  • the number of virtual backlight values in each row is equal to the number of first backlight values in the backlight unit of the first row. At least one row of virtual backlight values is zero.
  • the backlight unit in the first row and the third column is the backlight corresponding to the backlight data subset with 5 rows and 5 columns.
  • the virtual backlight value is zero
  • the backlight data subset includes the virtual backlight value of 2 rows and 5 columns, the first backlight value of the backlight unit in the 1st row, the 1st column to the 5th column, the second row, the 1st column to the 5th column
  • an array composed of a plurality of backlight units corresponding to each first backlight value in a backlight data subset the backlight unit at the center of the array is located in the first column of backlight units, and the backlight data subset includes at least one virtual Pixel values, such as the position where the sliding window cannot obtain the first backlight value, are all virtual pixel values.
  • an array of 3 rows and 3 columns formed by a plurality of backlight units corresponding to each first backlight value in a backlight data subset, the backlight unit at the center of the array is the 2nd row and 1st column in the backlight module.
  • the nine first backlight values in the one backlight data subset are the virtual pixel value, the first backlight value of the backlight unit in the first row and the first column, and the first backlight value of the backlight unit in the first row and the second column.
  • calculating the compensation coefficient of at least one pixel corresponding to the Nth backlight data subset in each pixel corresponding to the Mth row backlight unit including: according to the formula A compensation coefficient for the at least one pixel is obtained.
  • G is the compensation coefficient of one pixel
  • ⁇ is the gamma value of gamma correction
  • B max is the maximum first backlight value of the backlight unit corresponding to one pixel
  • B psf is the second backlight value corresponding to one pixel
  • the corresponding second backlight value is the product of the first backlight value in the Nth backlight data subset and the optical diffusion coefficient of each backlight unit corresponding to the Nth backlight data subset at a corresponding position of a pixel.
  • the backlight driving value corresponding to the maximum light emission luminance of the display device may be used as the maximum first backlight value (maximum backlight luminance driving value) of the backlight unit corresponding to one pixel.
  • the pixel value is the largest (for example, the pixel grayscale is 255)
  • the corresponding backlight driving value when the light-emitting brightness of the display device reaches the maximum brightness (for example, 1000 nit) is obtained, That is, the maximum first backlight value of the backlight unit corresponding to the pixel.
  • the backlight value has a linear relationship with the driving current, and the driving current has an approximately linear relationship with the luminous brightness.
  • ⁇ is the gamma value in the process of performing gamma correction on the image data by the display device.
  • the value of ⁇ may be 2.2 or 2.4.
  • Bmax in the expression can be used as the maximum first backlight value of the backlight unit corresponding to the pixel.
  • the display brightness of BPsf can be used as the display brightness corresponding to the second backlight value of the pixel.
  • the optical diffusion coefficient of a backlight unit at a corresponding position of a pixel is related to the relative positional relationship between the backlight unit and the pixel.
  • the relative positional relationship includes a reference distance and a reference angle; for example, referring to FIG. 12 , the reference distance Z is the distance between the corresponding position of a pixel Q being projected in the backlight module and the reference point S of each backlight unit 210, the The reference point S can be any point in the backlight unit 210.
  • the reference point S is the center point (eg, the geometric center or the geometric center of gravity) of the backlight unit 210;
  • the included angle between the line connecting the reference points S of each backlight unit 210 and the reference direction, the reference direction is any direction in the plane perpendicular to the thickness of the display device, for example, the reference direction is the X direction in FIG. 12 .
  • the backlight units are arranged in an array, referring to FIG. 5 , with the center point O of the backlight unit 210 as the coordinate origin, the row direction X of the backlight unit 210 as the horizontal axis, and the column direction Y as the vertical axis, the coordinates are established. Tie. Measure the brightness value of each coordinate point T in the coordinate system, and record the distance F between each coordinate point T and the coordinate origin O, and the angle ⁇ between the line connecting each coordinate point T and the coordinate origin O and the horizontal axis, according to The brightness value of each coordinate point and the brightness value of the coordinate origin are used to obtain the optical diffusion coefficient of the backlight unit 210 .
  • the optical diffusion coefficient may be the ratio between the luminance value of each coordinate point T and the luminance value of the coordinate origin O.
  • the coordinate origin O is the position where the maximum luminance value of the backlight unit 210 is located.
  • the above-mentioned correspondence list of the distance F, the included angle ⁇ and the optical diffusion coefficient can be searched to obtain the reference distance and reference angle of the backlight unit. under the optical diffusion coefficient.
  • a second backlight value corresponding to a pixel can be obtained.
  • the first backlight values of the 25 backlight units are BL 1 to BL 25 respectively, and the backlight unit corresponding to one pixel is located at 5
  • the optical diffusion coefficients of the 25 backlight units at the corresponding positions of the one pixel are respectively ⁇ 1 - ⁇ 25 .
  • the second backlight value B psf of the one pixel (BL 1 ⁇ 1 +BL 2 ⁇ 2 +BL 3 ⁇ 3 +...+BL 25 ⁇ 25 ).
  • the sampling position of the first backlight value of the backlight unit corresponds to the backlight unit.
  • the arrangement position of the first backlight value of the backlight unit A(1,1) in the first row and the first column is also the first row and the first backlight value. 1 column, the arrangement position can be expressed as D(1,1).
  • the backlight unit 210 at the center of the backlight unit array with 5 rows and 5 columns is the i-th row.
  • the data address of the first backlight value D(i, j) of the backlight unit A ij is p.
  • i and j are both positive integers.
  • the first backlight value may be a virtual backlight value.
  • u indicates that a row of backlight units has u columns of backlight units, and u is a positive integer, for example, u is 192.
  • the 1st row and 1st column backlight unit in the 5-row 5-column backlight unit array is represented as A(i-2,j-2), and the arrangement position of the first backlight value is D(i-2,j- 2), the data address of its first backlight value is p-2u-2;
  • the 1st row and 2nd column backlight unit in the 5-row 5-column backlight unit array is denoted as A(i-2,j-1), its th
  • the arrangement position of a backlight value is D(i-2,j-1), and the data address of the first backlight value is p-2u-1;
  • the unit is represented as A(i-2,j), the arrangement position of its first backlight value is D(i-2,j), and the data address of its first backlight value is p-2u; 5 rows and 5 columns of backlight units
  • the backlight unit in the 1st row and 4th column in the array is represented as A(
  • the data address is p-2u+1; the 1st row and 5th column backlight unit in the 5-row 5-column backlight unit array is represented as A(i-2,j+2), and the arrangement position of the first backlight value is D(i-2,j+2), the data address of the first backlight value is p-2u+2.
  • the 2nd row and 1st column backlight unit in the 5-row 5-column backlight unit array is represented as A(i-1,j-2), and the arrangement position of the first backlight value is D(i-1,j-2) , the data address of its first backlight value is p-u-2;
  • the second row and second column of the backlight unit in the 5-row and 5-column backlight unit array is represented as A(i-1,j-1), and the first backlight value is The arrangement position is D(i-1,j-1), and the data address of the first backlight value is p-u-1;
  • the 2nd row and 3rd column backlight unit in the 5-row 5-column backlight unit array is represented as A(i -1,j), the arrangement position of the first backlight value is D(i-1,j), and the data address of the first backlight value is p-u;
  • the 2nd row, the 4th row in the 5-row 5-column backlight unit array The column backlight unit is represented as A(i-1,j+1),
  • the backlight unit in the 3rd row and 1st column in the 5-row 5-column backlight unit array is denoted as A(i, j-2), and the arrangement position of the first backlight value is D(i, j-2), and its first backlight value is D(i, j-2).
  • the data address of the backlight value is p-2; the backlight unit of the 3rd row and 2nd column in the 5-row 5-column backlight unit array is represented as A(i,j-1), and the arrangement position of the first backlight value is D( i,j-1), the data address of the first backlight value is p-1; the 3rd row and 3rd column backlight unit in the 5-row 5-column backlight unit array is denoted as A(i,j), its first backlight unit The arrangement position of the value is D(i,j), and the data address of the first backlight value is p; the 3rd row and 4th column backlight unit in the 5-row 5-column backlight unit array is represented as A(i,j+1 ), the arrangement position of its first backlight value is D(i,j+1), the data address of its first backlight value is p+1; the 3rd row and 5th column of the backlight unit array of 5 rows and 5 columns are backlight
  • the unit is represented as A(i, j+
  • the 4th row and 1st column backlight unit in the 5-row 5-column backlight unit array is represented as A(i+1,j-2), and the arrangement position of the first backlight value is D(i+1,j-2) , the data address of the first backlight value is p+u-2;
  • the 4th row and 2nd column backlight unit in the 5-row 5-column backlight unit array is represented as A(i+1,j-1), and its first backlight unit
  • the arrangement position of the value is D(i+1,j-1), and the data address of the first backlight value is p+u-1;
  • the 4th row and 3rd column of the backlight unit in the 5-row 5-column backlight unit array represent is A(i+1,j), the arrangement position of its first backlight value is D(i+1,j), and the data address of its first backlight value is p+u; in the backlight unit array of 5 rows and 5 columns
  • the 4th row and 4th column of the backlight unit is represented as A(i+1,j
  • the 5th row and 1st column backlight unit in the 5-row 5-column backlight unit array is represented as A(i+2,j-2), and the arrangement position of the first backlight value is D(i+2,j-2) , the data address of its first backlight value is p+2u-2;
  • the 5th row and 2nd column backlight unit in the 5-row 5-column backlight unit array is denoted as A(i+2,j-1), its first backlight unit
  • the arrangement position of the value is D(i+2,j-1), and the data address of the first backlight value is p+2u-1;
  • the 5th row and 3rd column of the backlight unit array of 5 rows and 5 columns represent the backlight unit.
  • the arrangement position of its first backlight value is D(i+2,j), and the data address of its first backlight value is p+2u; in the backlight unit array of 5 rows and 5 columns
  • the 5th row and 4th column of the backlight unit is represented as A(i+2,j+1), the arrangement position of its first backlight value is D(i+2,j+1), the data of its first backlight value
  • the address is p+2u+1;
  • the 5th row and 5th column backlight unit in the 5-row 5-column backlight unit array is represented as A(i+2,j+2), and the arrangement position of the first backlight value is D( i+2, j+2), the data address of the first backlight value is p+2u+2.
  • the first backlight value corresponding to the backlight unit A(i,j) can be obtained by changing the values of i and j, and the backlight data subset corresponding to the backlight unit A(i,j) can be obtained by sampling accordingly, to calculate at least one pixel compensation coefficient in the backlight unit A(i,j).
  • the data processing method further includes: according to the compensation coefficient of at least one pixel corresponding to the Nth backlight data subset and the initial pixel value of at least one pixel in a frame of image , obtain the compensated pixel value of at least one pixel.
  • the compensation pixel value V 2 of a pixel is the product of the compensation coefficient G of the pixel and the initial pixel value V 1 of the pixel.
  • the compensation coefficient of the pixel The initial pixel value V 1 of the pixel, then the compensated pixel value of the pixel
  • the backlight module provides a light source for the display panel, and the picture viewed by the user is the superimposed light-emitting effect of the light-emitting device of the backlight module and the pixels on the display panel. Since the liquid crystal layer in the liquid crystal display device has transmittance to the light emitted from the backlight module, when the display device displays a completely black screen, part of the backlight may pass through, resulting in light leakage of the display device, resulting in reduced display effect. In order to avoid light leakage, the brightness of the backlight can be reduced while displaying a darker picture.
  • the liquid crystal layer has a certain transmittance, the light passing through the liquid crystal layer can be reduced at a low backlight brightness to achieve The display effect is completely black; in the part of the bright screen, the required backlight brightness can be maintained to realize the display effect of the bright screen.
  • the local dynamic dimming technology can be used to avoid light leakage in the display.
  • the backlight module is divided into multiple backlight units (which can also be described as backlight partitions), and at least one pixel corresponds to one backlight unit.
  • One light-emitting device corresponds to at least one pixel on the display panel, and dynamically controls the intensity of the backlight according to the display content (ie, the pixel value) of at least one pixel corresponding to the position of the backlight unit.
  • the control of the pixels corresponding to the backlight unit can reduce the luminous brightness of the backlight unit in a dark picture, and maintain the luminous brightness of the backlight unit in a bright picture.
  • the bright part and the dark part of the display screen are connected to each other.
  • the light-emitting brightness of the backlight unit corresponding to the display area should be determined by the corresponding light-emitting device and several surrounding light-emitting devices. devices together.
  • the brightness of the display area corresponding to the backlight unit on the backlight module and the backlight units around it is different, therefore, when the luminous brightness of the light-emitting devices in the backlight units around a backlight unit is significantly reduced, the The luminous brightness of the backlight unit will also be affected, resulting in deviations in the display brightness of the display area corresponding to the backlight unit.
  • the gamma curve is low.
  • the pixel value (ie low gray scale) interval produces obvious distortion, which deviates from the standard gamma curve. Such distortion may cause the human eye to be unable to see the details of the picture when the display device displays the dark part of the picture, resulting in the loss of the picture details.
  • the backlight module drives the backlight unit to emit light according to the first backlight value corresponding to each backlight unit
  • the display panel displays according to the compensated pixel value of each pixel, and combines the actual backlight brightness.
  • the pixel value is compensated, which can avoid the deviation of the pixel display caused by the mutual interference of the light emission of each backlight unit, and can avoid the distortion of the gamma curve, thereby improving the display effect of the display device.
  • the process of compensating the pixel values of a plurality of pixels is also performed row by row.
  • the moving direction of the sliding window is the same as the row direction of the backlight unit, and the moving step of the sliding window is the first backlight value corresponding to a column of backlight units.
  • the moving direction of the sliding window is the same as the row direction of the backlight unit (ie, the X direction in FIG. 7), and the sliding window of the Nth sliding window period is compared with the N-1th sliding window.
  • the sliding window of the sliding window period moves the position of the first backlight value of a column of backlight units.
  • the start time of the compensation coefficient of the first pixel calculated according to the Nth backlight data subset is the pixel period of one row of pixels among the plurality of pixels corresponding to one backlight unit.
  • the compensation of the first pixel calculated according to the Nth backlight data subset is calculated
  • the time difference between the start time of the coefficient and the start time of the compensation coefficient of the first pixel calculated according to the N+1th backlight data subset within the N+1th sliding window period is 40 pixel periods.
  • the pixel period is the time it takes to calculate the compensation coefficient for one pixel from a subset of backlight data.
  • the N+1th N+th pixel is obtained by sampling.
  • 1 backlight data subset that is, when the N+1th sliding window period arrives, the N+1th backlight data subset is taken out in advance, so that within the N+1th sliding window period according to the N+1th
  • the N+1 th backlight data subset can be obtained before calculating the compensation coefficient of the corresponding pixel for each backlight data subset, compared with the N+1 th backlight data subset obtained within the N+1 th sliding window period.
  • the data sampling time can be saved, the data processing delay can be avoided, and the data processing efficiency can be improved.
  • the sampling process of the backlight data subset on which the compensation coefficient of a pixel corresponding to the backlight unit is calculated is not within a sliding window period from the calculation process of the compensation coefficient of the pixel, and the calculation process of a pixel corresponding to the backlight unit is calculated.
  • the sampling of the backlight data subset on which the compensation coefficient is based is earlier than the calculation of the compensation coefficient for one pixel, so that when the pixel data (ie, the initial pixel value) arrives, the compensation coefficient can be calculated according to the obtained backlight data subset. , and get the compensated pixel value according to the compensation coefficient and the initial pixel value.
  • the pixel data Compared with the sampling of the backlight data subset when the pixel data arrives, the pixel data needs to be stored in a storage space first, and the pixel compensation is started after the backlight data subset is obtained by sampling, and the compensation pixel value is calculated.
  • the embodiments of the present disclosure can directly perform the calculation according to the backlight data subset, thereby saving the storage space for storing the pixel data and avoiding occupying additional storage resources.
  • the data processing method further includes: in the N+1th sliding window period, using the moved sliding window to sample the backlight data set, and sampling the N+2th
  • the backlight data subset is stored in the first storage space, and according to the N+1th backlight data subset, at least one pixel corresponding to the N+1th backlight data subset in each pixel corresponding to the Mth row backlight unit is calculated. Compensation factor for pixels.
  • the Nth backlight data subset stored in the first storage space has been used. In this case, referring to FIG.
  • the N+2 th backlight data subset in the process of obtaining the N+2 th backlight data subset, can be stored in the first storage space, and after obtaining the N+3 th backlight data subset During the data subset process, the N+3th backlight data subset can be stored in the second storage space, so that the first storage space and the second storage space are alternately stored in data, saving the data storage space of the display device , saving production costs.
  • the data processing method further includes: in the last sliding window period corresponding to the backlight data set, according to the last backlight data subset of the backlight data set, calculating in each pixel corresponding to the M-th row backlight unit, The compensation coefficient of at least one pixel corresponding to the last backlight data subset, and using the moved sliding window to sample the next backlight data set of the backlight data set to obtain the first backlight data subset of the next backlight data set. set.
  • one backlight data set includes the first backlight value of the M-th row of backlight units
  • the next backlight data set of the one backlight data set includes the M+1-th row of backlight units.
  • the last backlight data subset of a backlight data set is the backlight data subset used to calculate the compensation coefficient for the pixels in the last row corresponding to the M-th row of backlight units in the backlight data set, and in the last sliding window period, for The compensation coefficient is calculated for the last row of pixels corresponding to the M-th row of backlight units in a backlight data set.
  • the first backlight data subset of the next backlight data set is the backlight data subset used to calculate the compensation coefficient for the pixels in the first row corresponding to the M-th row of backlight units in the one backlight data set.
  • one sliding window moves the position of one column of backlight units along the row direction compared to the previous sliding window.
  • a plurality of backlight units corresponding to a subset of backlight data sampled by a sliding window are arranged in an array.
  • the position of the backlight unit corresponding to at least one pixel for which the compensation coefficient is calculated in each pixel corresponding to the backlight unit in the M-th row is at the center of the array of multiple backlight units corresponding to the backlight data subset obtained by sliding window sampling, for example, a
  • the multiple backlight units corresponding to the backlight data subset obtained by sliding window sampling are in an array of 5 rows and 5 columns, then the position of the backlight unit corresponding to at least one pixel for which the compensation coefficient is calculated in each pixel corresponding to the backlight unit in the Mth row is located in the 5th row.
  • the center of the 5-column array that is, the backlight unit located at the 3rd row and 3rd column of the 5-row and 5-column array.
  • the sliding window slides to sample the next backlight data set to obtain the first backlight data subset of the next backlight data set.
  • the one backlight data set includes the first backlight values of multiple rows of backlight units with the M th row of backlight units as the middle row
  • the next backlight data set includes multiple rows of backlight units with the M+1 th row of backlight units as the middle row.
  • the first backlight value of the row backlight unit so that the backlight unit corresponding to each first backlight value in the first backlight data subset includes the first backlight unit (the first column of backlight units) in the M+1th row of backlight units.
  • the first backlight value is the first backlight value.
  • the first backlight unit in the M+1 th row of backlight units is located at the center of the array.
  • the sliding window moves from the last backlight unit of a row of backlight units to the first backlight unit of the next row of backlight units, and samples the first backlight value corresponding to the backlight unit array centered on the first backlight unit. In this way, the movement of the sliding window between the two backlight data sets can be made continuous, so as to realize the continuous processing of the data.
  • the first backlight value of each backlight unit corresponding to one frame of image is calculated according to the initial pixel value of each pixel of the previous frame of image of the one frame of image.
  • the first backlight value of each backlight unit corresponding to the one frame of image is configured to drive the backlight module.
  • the first backlight value of each backlight unit corresponding to the K-1 th frame image is calculated and obtained.
  • the pixel value of each pixel corresponding to the Kth frame of image is compensated according to the first backlight value of each backlight unit calculated from the initial pixel value of each pixel corresponding to the K-1th frame of image , at this time, the first backlight value in the backlight data set corresponding to the Kth frame image is calculated from the initial pixel value of each pixel corresponding to the K-1th frame image.
  • K-1 is a positive integer.
  • the first backlight value of each backlight unit corresponding to the image of the Kth frame is configured to drive the backlight module.
  • the first backlight values of the backlight units corresponding to the two adjacent frames of images are approximately equal.
  • the backlight data set of the previous frame of image can be used, and it is not necessary to calculate the first backlight value of each backlight unit according to the image data of the current frame of image, which saves the time of data processing. time, thereby improving the efficiency of data processing.
  • the first backlight value of the backlight data set for the first frame image pair may be calculated from the initial pixel values of each pixel of the first frame image pair.
  • Embodiments of the present disclosure provide a data processing apparatus.
  • the data processing device is applied to the above-mentioned display device.
  • the M th backlight data set includes the first backlight values of at least one row of backlight units, the at least one row of backlight units includes the M th row of backlight units, and M is a positive integer.
  • the data processing device is configured to use the sliding window to sample the Mth backlight data set within the N-1th sliding window period, and store the Nth backlight data subset obtained by sampling into the first storage space; and, During the Nth sliding window period, the Mth backlight data set is sampled by using the moved sliding window, and the N+1th backlight data subset obtained by sampling is stored in the second storage space, and according to the For the N backlight data subsets, the compensation coefficient of at least one pixel corresponding to the Nth backlight data subset in each pixel corresponding to the M-th row of backlight units is calculated.
  • N-1 is a positive integer.
  • the data processing apparatus is further configured to use the moved sliding window to sample the Mth backlight data set within the N+1th sliding window period, and to sample the N+2th backlight data set obtained by sampling.
  • the backlight data subset is stored in the first storage space, and according to the N+1th backlight data subset, at least one pixel corresponding to the N+1th backlight data subset in each pixel corresponding to the Mth row backlight unit is calculated. Compensation factor for pixels.
  • the data processing apparatus is further configured to, within the last sliding window period corresponding to the M th backlight data set, calculate the backlight in the M th row according to the last backlight data subset of the M th backlight data set. In each pixel corresponding to the unit, the compensation coefficient of at least one pixel corresponding to the last backlight data subset, and use the moved sliding window to sample the M+1th backlight data set to obtain the M+1th backlight data. The first subset of backlight data for the collection.
  • the data processing apparatus is further configured to, within the Nth sliding window period, according to the compensation coefficient of at least one pixel corresponding to the Nth backlight data subset and the compensation coefficient of at least one pixel in one frame of image The initial pixel value, and the compensated pixel value of at least one pixel is obtained.
  • Some embodiments of the present disclosure provide a non-transitory computer-readable storage medium, the computer-readable storage medium stores computer program instructions, and when the computer program instructions are executed on a processor, causes the computer to execute the above-mentioned embodiments The data processing method described in any one of the embodiments.
  • the computer herein may be the above-mentioned display device.
  • the above-mentioned computer-readable storage media may include, but are not limited to, magnetic storage devices (eg, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (eg, CD (Compact Disk), DVD (Digital Versatile Disk, etc.), Digital Universal Disk), etc.), smart cards and flash memory devices (eg, EPROM (Erasable Programmable Read-Only Memory), card, stick or key drive, etc.).
  • the various computer-readable storage media described in this disclosure may represent one or more devices and/or other machine-readable storage media for storing information.
  • the term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • the computer program product includes computer program instructions that, when executed on a computer, cause the computer to perform one or more steps in the data processing methods described in the above embodiments.
  • Some embodiments of the present disclosure also provide a computer program.
  • the computer program When the computer program is executed on a computer, the computer program causes the computer to perform one or more steps in the data processing method described in the above-mentioned embodiments.

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Abstract

一种数据处理方法，应用于显示装置。显示装置中的显示面板包括多个像素，背光模组包括多个背光单元，每个背光单元与至少一个像素位置对应。针对一个背光数据集合，背光数据集合包括至少一行背光单元的第一背光值，至少一行背光单元包含第M行背光单元，数据处理方法包括：在第N-1个滑动窗口周期内，利用滑动窗口对背光数据集合取样，得到第N个背光数据子集并存入第一存储空间；在第N个滑动窗口周期内，利用移动后的滑动窗口对背光数据集合取样，得到第N+1个背光数据子集并存入第二存储空间，并根据第N个背光数据子集，计算在第M行背光单元对应的各个像素中，与第N个背光数据子集对应的至少一个像素的补偿系数。

Description

数据处理方法及装置、显示装置 技术领域
本公开涉及显示技术领域，尤其涉及一种数据处理方法及装置、显示装置。
背景技术
目前，大尺寸、高亮度显示装置中例如可以采用直下式背光模组，以提高显示装置的亮度。直下式背光模组一般包括较多的发光二极管(Light-Emitting Diode，LED)，可以通过局部动态调光技术(Local Dimming)，对背光模组的发光亮度的分区控制。
发明内容
一方面，提供一种数据处理方法。所述数据处理方法应用于显示装置中。所述显示装置包括显示面板、背光模组、第一存储空间和第二存储空间。所述显示面板和所述背光模组相对设置。所述显示面板包括多个像素。所述背光模组包括多个背光单元，每个背光单元与至少一个像素位置对应。
针对一个背光数据集合，所述背光数据集合包括至少一行背光单元的第一背光值，所述至少一行背光单元包含第M行背光单元，所述M为正整数，所述数据处理方法包括：在第N-1个滑动窗口周期内，利用滑动窗口对所述背光数据集合进行取样，将取样得到的第N个背光数据子集存入所述第一存储空间；所述N-1为正整数；在第N个滑动窗口周期内，利用移动后的所述滑动窗口对所述背光数据集合进行取样，将取样得到的第N+1个背光数据子集存入所述第二存储空间，并根据所述第N个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述第N个背光数据子集对应的至少一个像素的补偿系数。
在一些实施例中，所述数据处理方法还包括：在第N+1个滑动窗口周期内，利用移动后的所述滑动窗口，对所述背光数据集合进行取样，将取样得到的第N+2个背光数据子集存入所述第一存储空间，并根据所述第N+1个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述第N+1个背光数据子集对应的至少一个像素的补偿系数。
在一些实施例中，所述数据处理方法还包括：在所述背光数据集合对应的最后一个滑动窗口周期内，根据所述背光数据集合的最后一个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述最后一个背光数据子集对应的至少一个像素的补偿系数，并利用移动后的所述滑动窗口对所 述背光数据集合的下一个背光数据集合进行取样，得到所述下一个背光数据集合的第一个背光数据子集。
在一些实施例中，所述至少一行背光单元为多行背光单元，所述多行背光单元包括以所述第M行背光单元为中间行的至少三行背光单元。
在一些实施例中，在所述第M行背光单元为第一行背光单元的情况下，所述背光数据集合包括：沿所述多个背光单元排列的列方向依次排列的至少一行虚拟背光值、所述第一行背光单元的第一背光值和第二行背光单元的第一背光值。其中，每行虚拟背光值的个数与所述第一行背光单元的第一背光值的个数相等；所述至少一行虚拟背光值为零。
在一些实施例中，所述第N个背光数据子集对应的各背光单元呈阵列排布，与所述第N个背光数据子集对应的至少一个像素为阵列的中心位置处的背光单元对应的至少一个像素。
在一些实施例中，在所述第N个滑动窗口周期内，所述数据处理方法还包括：根据与所述第N个背光数据子集对应的至少一个像素的补偿系数、以及一帧图像中所述至少一个像素的初始像素值，求得所述至少一个像素的补偿像素值。
在一些实施例中，所述一帧图像对应的各背光单元的第一背光值是根据该一帧图像的上一帧图像的各像素的初始像素值计算得到。在所述显示面板显示该一帧图像情况下，所述一帧图像对应的各背光单元的第一背光值被配置为驱动所述背光模组。
在一些实施例中，所述根据所述第N个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述第N个背光数据子集对应的至少一个像素的补偿系数，包括：根据公式
Figure PCTCN2020133146-appb-000001
得到所述至少一个像素的补偿系数。其中，G为一个像素的补偿系数，γ为伽马校正的伽马值，B max为所述一个像素对应的背光单元的最大第一背光值，B psf为所述一个像素对应的第二背光值；所述一个像素对应的第二背光值为所述第N个背光数据子集中的第一背光值和该第N个背光数据子集对应的各背光单元在所述一个像素的对应位置的光学扩散系数之间的乘积。
另一方面，提供一种数据处理装置。所述数据处理装置应用于显示装置中。所述显示装置包括：显示面板、背光模组、第一存储空间和第二存储空间。所述显示面板和所述背光模组相对设置。所述显示面板包括多个像素。所述背光模组包括多个背光单元，每个背光单元与至少一个像素位置对应。
针对一个背光数据集合，所述背光数据集合包括至少一行背光单元的第 一背光值，所述至少一行背光单元包含第M行背光单元，所述M为正整数，所述数据处理装置被配置为，在第N-1个滑动窗口周期内，利用滑动窗口对所述背光数据集合进行取样，将取样得到的第N个背光数据子集存入所述第一存储空间；及，在第N个滑动窗口周期内，利用移动后的所述滑动窗口对所述背光数据集合进行取样，将取样得到的第N+1个背光数据子集存入所述第二存储空间，并根据所述第N个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述第N个背光数据子集对应的至少一个像素的补偿系数。所述N-1为正整数。
在一些实施例中，所述数据处理装置还被配置为，在第N+1个滑动窗口周期内，利用移动后的所述滑动窗口，对所述背光数据集合进行取样，将取样得到的第N+2个背光数据子集存入所述第一存储空间，并根据所述第N+1个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述第N+1个背光数据子集对应的至少一个像素的补偿系数。
在一些实施例中，所述数据处理装置还被配置为，在所述背光数据集合对应的最后一个滑动窗口周期内，根据所述背光数据集合的最后一个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述最后一个背光数据子集对应的至少一个像素的补偿系数，并利用移动后的所述滑动窗口对所述背光数据集合的下一个背光数据集合进行取样，得到所述下一个背光数据集合的第一个背光数据子集。
在一些实施例中，所述数据处理装置还被配置为，在所述第N个滑动窗口周期内，根据与所述第N个背光数据子集对应的至少一个像素的补偿系数、以及一帧图像中所述至少一个像素的初始像素值，求得所述至少一个像素的补偿像素值。
又一方面，提供一种数据处理装置。所述数据处理装置应用于显示装置。所述数据处理装置包括存储器和处理器。所述存储器中存储一个或多个计算机程序。所述处理器与所述存储器耦接。所述处理器被配置为执行所述计算机程序，以使得所述显示装置实现上述任一实施例所述的数据处理方法。
又一方面，提供一种数据处理装置。所述数据处理装置为芯片。所述芯片被配置为实现如上述任一实施例所述的数据处理方法。
又一方面，提供一种显示装置。所述显示装置包括显示面板、背光模组、第一存储空间、第二存储空间和数据处理装置。所述数据处理装置为上述任一实施例所述的数据处理装置。所述显示面板包括多个像素。所述背光模组所述显示面板相对设置。所述背光模组包括多个背光单元，每个背光单元与 至少一个像素位置对应。
在一些实施例中，所述第一存储空间和所述第二存储空间位于至少一个缓存内。
再一方面，提供一种非瞬态的计算机可读存储介质。所述计算机可读存储介质存储有计算机程序指令，所述计算机程序指令在计算机上运行时，使得所述计算机执行如上述任一实施例所述的数据处理方法方法。
又一方面，提供一种计算机程序产品。所述计算机程序产品包括计算机程序指令，在计算机上执行所述计算机程序指令时，所述计算机程序指令使计算机执行如上述任一实施例所述的数据处理方法。
又一方面，提供一种计算机程序。当所述计算机程序在计算机上执行时，所述计算机程序使计算机执行如上述任一实施例所述的数据处理方法。
附图说明
为了更清楚地说明本公开中的技术方案，下面将对本公开一些实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例的附图，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。此外，以下描述中的附图可以视作示意图，并非对本公开实施例所涉及的产品的实际尺寸、方法的实际流程、信号的实际时序等的限制。
图1为根据一些实施例的显示装置的一种结构图；
图2为根据一些实施例的数据处理装置的一种结构图；
图3为根据一些实施例的显示装置的另一种结构图；
图4为根据一些实施例的显示装置的又一种结构图；
图5为根据一些实施例的获得背光单元的光学扩散系数的一种示意图；
图6为根据一些实施例的数据处理方法的一种过程图；
图7为根据一些实施例的数据处理方法的另一种过程图；
图8为根据一些实施例的数据处理方法的又一种过程图；
图9为根据一些实施例的背光数据集合的一种示意图；
图10为根据一些实施例的背光数据集合的另一种示意图；
图11A为根据一些实施例的背光数据子集对应的各背光单元的一种示意图；
图11B为根据一些实施例的背光数据子集的一种示意图；
图12为根据一些实施例的确定像素与背光单元的相对位置关系的 一种示意图；
图13为根据一些实施例的数据处理方法的又一种过程图；
图14为根据一些实施例的数据处理方法的又一种过程图。
具体实施方式
下面将结合附图，对本公开一些实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开所提供的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开保护的范围。
除非上下文另有要求，否则，在整个说明书和权利要求书中，术语“包括(comprise)”及其其他形式例如第三人称单数形式“包括(comprises)”和现在分词形式“包括(comprising)”被解释为开放、包含的意思，即为“包含，但不限于”。在说明书的描述中，术语“一个实施例(one embodiment)”、“一些实施例(some embodiments)”、“示例性实施例(exemplary embodiments)”、“示例(example)”、“特定示例(specific example)”或“一些示例(some examples)”等旨在表明与该实施例或示例相关的特定特征、结构、材料或特性包括在本公开的至少一个实施例或示例中。上述术语的示意性表示不一定是指同一实施例或示例。此外，所述的特定特征、结构、材料或特点可以以任何适当方式包括在任何一个或多个实施例或示例中。
以下，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本公开实施例的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在描述一些实施例时，可能使用了“耦接”和“连接”及其衍伸的表达。例如，描述一些实施例时可能使用了术语“连接”以表明两个或两个以上部件彼此间有直接物理接触或电接触。又如，描述一些实施例时可能使用了术语“耦接”以表明两个或两个以上部件有直接物理接触或电接触。然而，术语“耦接”或“通信耦合(communicatively coupled)”也可能指两个或两个以上部件彼此间并无直接接触，但仍彼此协作或相互作用。这里所公开的实施例并不必然限制于本文内容。
如本文中所使用，根据上下文，术语“如果”任选地被解释为意思是“当……时”或“在……时”或“响应于确定”或“响应于检测到”。类似地，根据上下文，短语“如果确定……”或“如果检测到[所陈述的条件或事件]”任选地被解释为是指“在确定……时”或“响应于确定……”或“在检 测到[所陈述的条件或事件]时”或“响应于检测到[所陈述的条件或事件]”。
本文中“适用于”或“被配置为”的使用意味着开放和包容性的语言，其不排除适用于或被配置为执行额外任务或步骤的设备。
如本文所使用的那样，“约”或“近似”包括所阐述的值以及处于特定值的可接受偏差范围内的平均值，其中所述可接受偏差范围如由本领域普通技术人员考虑到正在讨论的测量以及与特定量的测量相关的误差(即，测量系统的局限性)所确定。
本公开的实施例提供一种显示装置，示例性地，显示装置可以是显示器，还可以是包含显示器的产品，例如电视机、电脑(一体机或台式机)、计算机、平板电脑、手机、电子画屏等。示例性地，显示装置可以具有较高的分辨率，例如可以是8K显示装置，实现8K图像显示。
如图1所示，显示装置500包括显示面板100、背光模组200、数据处理装置300、第一存储空间410和第二存储空间420。
如图1所示，显示面板100包括多个像素Q。示例性地，显示面板100的分辨率为7680×4320。背光模组200包括多个背光单元(即背光分区)210。例如，多个背光单元的数量约为两万个。其中，多个像素Q可以是显示面板100包含一部分像素Q，也可以是全部的像素Q。多个背光单元210可以是背光模组200包含一部分背光单元210，也可以是全部的背光单元210。
需要说明的是，本公开对显示面板100中的多个像素Q的排布方式不作限定。例如，如图4所示，多个像素Q可以呈阵列排布，在此情况下，沿X方向排列成一排的像素称为一行像素，沿Y方向排列成一排的像素称为一列像素。
另外，对背光模组200中的多个背光单元210的排布方式不作限定。例如，多个背光单元210呈阵列排布。例如，沿图4中的X方向排列成一排的背光单元为一行背光单元，该X方向为背光单元排列的行方向，沿图4中的Y方向排列成一排的背光单元为一列背光单元，该Y方向为背光单元排列的列方向。
每个背光单元与至少一个像素位置对应。示例性地，每个背光单元与多个像素位置对应，在多个像素呈阵列排布的情况下，每个背光单元对应的多个像素中，每行像素的个数与每列像素的个数相等。例如，每个背光单元所对应的多个像素呈40行40列的阵列排布。
在一些实施例中，如图2所示，数据处理装置300包括存储器301和处理器302。其中，存储器301与处理器302耦接。
存储器301中存储可在处理器302上运行的一个或多个计算机程序。
处理器302执行该计算机程序时，以使显示装置500实现如下述任一实施例所述的数据处理方法。
示例性地，上述处理器302可以是一个处理器，也可以是多个处理元件的统称。例如，该处理器302可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application specific integrated circuit，ASIC)，或一个或多个用于控制本公开方案程序执行的集成电路，例如：一个或多个微处理器。
上述存储器301可以是一个存储器，也可以是多个存储元件的统称，且用于存储可执行程序代码等。且存储器301可以包括随机存储器(Random Access Memory，RAM)，也可以包括非易失性存储器(non-volatile memory)，例如磁盘存储器，闪存(Flash)等。
其中，存储器301用于存储执行本公开方案的应用程序代码，并由处理器320来控制执行。处理器302用于执行存储器301中存储的应用程序代码，以控制显示装置500实现本公开下述任一实施例提供的数据处理方法。
在另一些实施例中，数据处理装置300可以为芯片。该芯片被配置为实现如上述任一实施例中的数据处理方法。
示例性地，该芯片可以为可编程器件。例如，该可编程器件为CPLD(Complex Programmable Logic Device，复杂可编程逻辑器件)、EPLD(Erasable Programmable Logic Device，可擦除可编辑逻辑器件)或者FPGA(field－programmable gate array，现场可编程门阵列)。
在一些实施例中，第一存储空间和第二存储空间位于至少一个缓存内。例如，第一存储空间和第二存储空间位于同一个缓存内(参考图3中的缓存400，缓存400包括第一存储空间410和第二存储空间420)，即，第一存储空间和第二存储空间为同一缓存内的不同的存储空间。或者，例如，第一存储空间和第二存储空间分别位于两个缓存内，即，第一存储空间位于两个缓存中的一个缓存内，第二存储空间位于两个缓存中的另一个缓存内。
示例性地，缓存可以为随机存储器或者双倍速率同步动态随机存储器(Double Data Rate Synchronous Dynamic Random Access Memory，DDR SRAM)。
其中，显示装置还包括驱动芯片(Driver IC)和时序控制器(Timming Controller，T-CON)。驱动芯片与显示面板绑定，控制芯片与时序控制器耦接。在此情况下，数据处理装置将图像数据(例如图像数据包括各个像素的像素 值；例如像素值为补偿像素值)传输至时序控制器，该时序控制器向驱动芯片输出时序控制信号，驱动芯片根据时序控制信号向显示面板输出驱动信号，以驱动显示面板进行显示。
背光模组还包括灯板，灯板上设置有多个发光器件和与多个发光器件耦接的背光控制电路。在此情况下，数据处理装置将各个背光单元的第一背光值传输至背光控制电路，背光控制电路将第一背光值转换成相应的背光控制信号(例如PWM信号)，并向各个背光单元中的发光器件传输相应的背光控制信号，以控制多个发光器件发光。
其中，背光模组采用局部动态调光技术。
需要说明的是，本公开的实施例对背光单元内设置的发光器件的个数不作限定，可以根据实际情况进行设计。例如，一个背光单元内设置有的发光器件L的数量大于或等于两个(例如在图5中的背光单元210中，发光器件的数量为四个，分别为L1～L4)，至少两个发光器件在该背光单元内均匀分布。示例性地，发光器件可以采用包括微型发光二极管(micro LED)或迷你发光二极管(mini LED)等无机发光器件。
本公开的实施例提供一种数据处理方法，应用于上述的显示装置中，该数据处理方法的执行主体可以是该显示装置，也可以是显示装置中的某个或某些部件，例如可以是文中的数据处理装置。
其中，显示装置(或者数据处理装置)可以根据所要显示的图像对应的图像数据，该图像数据包括多个像素的初始像素值，得到多个背光单元对应的第一背光值。例如，根据每个背光单元对应的各个像素的初始像素值，得到该背光单元的第一背光值。示例性地，显示装置还包括存储部件。例如，该存储部件可以是存储器，例如DDR。存储部件被配置为存储第一背光值和初始像素值。例如第一背光值和初始像素值分别位于不同的存储空间内。
可以理解的是，每个像素包括多个子像素，例如，多个子像素为红色子像素、绿色子像素和蓝色子像素。例如，第一图像数据包含各个像素中的每个子像素的灰阶。示例性地，可以根据该像素中的各个子像素的灰阶，得到该像素的初始像素值。例如，根据像素中的红色子像素的灰阶R、绿色子像素的灰阶G、蓝色子像素的灰阶B，将RGB数据转换为YUV数据，以BT709标准为例，可以得到该像素的明亮度Y＝0.2126R+0.7152G+0.0722B，此时，像素的明亮度Y值可以看作像素的初始像素值。其中，本公开的实施例对RGB数据和YUV数据转换标准不作限定，可以根据实际情况进行选择。
示例性地，求取J倍的背光单元的像素平均值，以得到背光单元的第一背 光值。其中，背光单元的像素平均值为背光单元对应的各个像素的初始像素值的平均值，1≤J≤2。示例性地，J可以取1.5。例如，在每个背光单元对应1600个像素，且1600个像素呈40行40列的阵列排布的情况下，求取J倍的1600个像素的初始像素值之和的平均值，得到背光单元的第一背光值。
需要说明的是，背光单元的第一背光值可以是无单位的数值，数值的大小仅仅代表该背光单元的相对亮度大小。背光单元的第一背光值可以用于控制驱动电流的大小，即第一背光值可以看作背光驱动值，该背光驱动值与驱动电流呈线性关系，驱动电流与发光亮度近似呈线性关系，通过驱动电流的大小代表背光单元的相对亮度的大小。示例性地，显示装置中的芯片可以根据公式I OUT,ICG＝I OUT,GCG×(Code/127)，I OUT,GCG＝(1/REXT)×0.600×Gain1×Gain2，Gain1＝GCG[A:9]，Gain2＝((GCG[8:6])/6.944+1)，将背光驱动值转换成驱动电流；其中，REXT为芯片的外接电阻，GCG[A:9]和GCG[8:6])均为预设的寄存器值，Code为背光驱动值，I OUT,ICG为驱动电流。当然，本公开也可以采用不同标准进行转换，在此不作限定。另外，背光单元的第一背光值也可以是背光单元实际的亮度。示例性地，背光单元在一定亮度(例如Y为一定灰阶P)下的第一背光值(背光驱动值)BL V，与显示装置的发光亮度最大(例如Y为最大灰阶255)下的背光单元的背光驱动值BL V_MAX的关系为BL V＝(P/255)×BL V_MAX。其中，显示装置500的发光亮度最大下的背光驱动值可以是过在Y的最大值为255，调整每个背光单元的发光亮度，得到的显示装置500的发光亮度达到最大亮度(例如为1000nit)时所对应的背光驱动值。
在此情况下，多个背光单元的第一背光值可以分为多个背光数据集合。在背光单元呈阵列排布的情况下，一个背光数据集合包括至少一行背光单元的第一背光值。例如，一个背光数据集合可以包括多行背光单元的第一背光值；例如，一个背光数据集合和该一个背光数据集合的下一个背光数据集合可以具有相同行背光单元的第一背光值。
针对一个背光数据集合，背光数据集合包括至少一行背光单元的第一背光值，至少一行背光单元包含第M行背光单元，M为正整数。其中，第M行背光单元为多个背光单元中的任一行背光单元。
参考图6，数据处理方法包括：
在第N-1个滑动窗口周期内，利用滑动窗口对背光数据集合进行取样，将取样得到的第N个背光数据子集存入第一存储空间。其中，N-1为正整数，即，N为大于1的整数。
在第N个滑动窗口周期内，利用移动后的滑动窗口对背光数据集合进行 取样，将取样得到的第N+1个背光数据子集存入第二存储空间，并根据第N个背光数据子集，计算在第M行背光单元对应的各个像素中，与第N个背光数据子集对应的至少一个像素的补偿系数。
其中，第N-1个滑动窗口周期，滑动窗口对应第N个背光数据子集，第N个背光数据子集对应至少一个背光单元的第一背光值，至少一个背光单元包括第M行背光单元的至少一个背光单元。例如，在第N个背光数据子集对应的至少一个背光单元为多个背光单元，且多个背光单元呈阵列排布的情况下，多个背光单元构成的阵列的中心位置处的背光单元位于第M行背光单元。
可以理解的是，取样得到第N个背光数据子集的周期与根据第N个背光数据子集，计算第N个背光数据子集对应的至少一个像素的补偿系数的周期不同，是错开的。
其中，在第N-1个滑动窗口周期，滑动窗口与第N个背光数据子集对应，例如，滑动窗口的位置处于第N个背光数据子集的位置处，这样，在第N-1个滑动窗口周期，利用滑动窗口取样得到第N个背光数据子集；在第N个滑动窗口周期，滑动窗口与第N+1个背光数据子集对应，例如，滑动窗口的位置处于第N+1个背光数据子集的位置处，这样，在第N个滑动窗口周期，利用滑动窗口取样得到第N+1个背光数据子集。
示例性地，第N个背光数据子集对应的各背光单元呈阵列排布，上述的与第N个背光数据子集对应的至少一个像素为阵列的中心位置处的背光单元对应的至少一个像素。
例如，在第N-1个滑动窗口周期内，滑动窗口取样得到的第N个背光数据子集，在第N个滑动窗口周期，计算至少一个像素的补偿系数，该至少一个像素位置对应的背光单元位于第N个背光数据子集对应的背光单元阵列的中心位置处，并且，该背光单元位于第M行背光单元中。例如，图7中的(A)部分示出了对于一个背光数据集合，在各滑动窗口周期内，通过移动的滑动窗口取得的背光数据子集，图7中的(B)部分示出了(A)部分中的背光数据集合对应的各背光单元210，其中第N个背光数据子集对应的各背光单元呈5行5列的阵列，与第N个背光数据子集对应的至少一个像素为该5行5列的阵列的中心位置处的背光单元210(即5行5列的阵列中的第3行第3列的背光单元)对应的至少一个像素。这样，在第N个滑动窗口周期内，计算第N个背光数据子集对应的5行5列的阵列中的第3行第3列的背光单元对应的至少一个像素的补偿系数。
例如，在一个背光单元对应多个像素的情况下，多个像素呈阵列排布， 在第N个滑动窗口周期，可以计算一个背光单元对应的多个像素中的一行像素的补偿系数，该一个背光单元位于第N个背光数据子集对应的背光单元阵列的中心位置处，并且，该一个背光单元位于第M行背光单元中。例如，第N个背光数据子集对应的5行5列背光单元的阵列中的第3行第3列的背光单元，该第3行第3列的背光单元对应40行40列像素，在第N个滑动窗口周期内，可以计算该第3行第3列的背光单元中的一行像素(即一行40列像素)的补偿系数。
示例性地，在第N个滑动窗口周期，计算一个背光单元对应的一行像素的补偿系数，在第N+1个滑动窗口周期，计算另一个背光单元对应的一行像素的补偿系数，该一个背光单元和该另一个背光单元为同一行背光单元中的相邻两列背光单元，并且，该一个背光单元对应的一行像素与该另一个背光单元对应的一行像素为同一行像素中连续排列的像素。
示例性地，在计算每个像素的补偿系数的过程中，在计算一行像素中的最后一列像素的一个滑动窗口周期内，对该一行像素的下一行像素中的第一列像素位置所对应的背光单元的第一背光值对应的背光数据子集进行取样，以在下一个滑动窗口周期内，根据该背光数据子集，计算该一行像素的下一行像素中的第一列像素的补偿系数。例如，在多行像素的位置对应一个背光单元的情况下，一行像素的第一列像素位置所对应的背光单元的第一背光值对应的背光数据子集，与该一行像素的下一行像素中的第一列像素位置所对应的背光单元的第一背光值对应的背光数据子集相同。
例如，在显示面板包括4320行7680列像素，背光单元对应40行40列像素的情况下，背光单元呈108行192列阵列，对于一个背光数据集合对应的第M行背光单元，在第191个滑动窗口周期内，取样得到该第M行背光单元对应的第192个背光数据子集，该第192个背光数据子集包括多个背光单元的第一背光值，多个背光单元为以该第M行背光单元的第192个背光单元为中心的阵列；在第192个滑动窗口周期内，取样得到该第M行背光单元对应的第193个背光数据子集，该第193个背光数据子集包括多个背光单元的第一背光值，多个背光单元为以该第M行背光单元的第1个背光单元为中心的阵列，并根据在第191个滑动窗口周期内取样得到的第192个背光数据子集，对第192个背光单元对应的多行像素中的第一行像素计算补偿系数；在第193个滑动窗口周期内，取样得到该第M行背光单元对应的第194个背光数据子集，该第194个背光数据子集包括多个背光单元的第一背光值，多个背光单元为以该第M行背光单元的第2个背光单元为中心的阵列，并根据在 第192个滑动窗口周期内取样得到的第193个背光数据子集，对第1个背光单元对应的多行像素中的第二行像素计算补偿系数；在第194个滑动窗口周期内，取样得到该第M行背光单元对应的第195个背光数据子集，该第195个背光数据子集包括多个背光单元的第一背光值，多个背光单元为以该第M行背光单元的第3个背光单元为中心的阵列，并根据在第193个滑动窗口周期内取样得到的第194个背光数据子集，对第2个背光单元对应的多行像素中的第二行像素计算补偿系数。例如，在第2个滑动窗口周期内，取样得到该第M行背光单元对应的第3个背光数据子集，该第3个背光数据子集包括多个背光单元的第一背光值，多个背光单元为以该第M行背光单元的第3个背光单元为中心的阵列，该在第2个滑动窗口周期内取样得到的第3个背光数据子集与在第194个滑动窗口周期内取样得到的第195个背光数据子集相同。
一些实施例中，在取样多个背光单元的第一背光值的过程中，先从一个存有所有背光单元的第一背光值的存储器(例如DDR)中取出背光数据集合，并在一个存储空间内载入背光数据集合，该背光数据集合包括多行背光单元的第一背光值，再利用滑动窗口对载入的多行背光单元的第一背光值所构成的背光数据集合进行取样，得到各背光数据子集。例如，在一行背光单元包括192列背光单元，一个背光数据集合包括5行背光单元的第一背光值的情况下，参考图8中的(A)部分，在对背光数据集合进行取样之前，需要先载入该背光数据集合，即，载入5行背光单元的第一背光值，也即，载入5×192个背光单元的第一背光值，再利用滑动窗口对5×192个背光单元的第一背光值所构成的背光数据集合进行取样。这样，在背光数据集合的数据量较大的情况下，会占用额外的存储资源，增加成本。并且，如果载入一个背光单元的第一背光值的时间为一个时钟周期，则载入5行背光单元的第一背光值的时间为5×192个时钟周期。因此，在滑动窗口开始取样得到第一个背光数据子集的过程中，会等待5×192个时钟周期，也即会延迟5×192个时钟周期。另外，对于一个背光数据集合，背光数据集合包括至少一行背光单元的第一背光值，至少一行背光单元包含第M行背光单元，在第N滑动窗口周期内取样得到的第N个背光数据子集，计算在第M行背光单元对应的各个像素中，与第N个背光数据子集对应的至少一个像素的补偿系数，这样，在计算至少一个像素的补偿系数的滑动窗口周期内，需要等待取得相应的背光数据子集的后，才会计算至少一个像素的补偿系数，使得数据处理的时间较长。
而本公开的实施例在一个滑动窗口周期内，可以取得下一个滑动窗口周 期中计算像素补偿系数所对应的背光数据子集，这样，在下一个滑动窗口周期内，可以直接根据取得的背光数据子集计算像素补偿系数，不需要等待取得该背光数据子集后在进行计算，使得计算一个背光单元对应的至少一个像素的补偿系数与取样下一个背光单元对应的背光数据子集的过程可以同步进行，节省了数据处理的时间，提高了数据处理的效率。另外，参考图8中的(B)部分，本公开的实施例在对背光数据集合进行取样之前，该背光数据集合不需要载入额外的存储空间，可以直接从存储器(例如DDR)中对背光数据集合进行取样，可以节省存储资源；并且，图8中的(B)部分相比于图8中的(A)部分在对背光数据进行取样的过程中，避免了因背光数据集合载入而导致数据处理过程的延迟，从而可以提高了缩短了数据处理的时间，提高了数据处理效率。
因此，本公开的实施例提供一种数据处理方法，在第N-1个滑动窗口周期内，利用滑动窗口对背光数据集合进行取样，将取样得到的第N个背光数据子集存入第一存储空间。在第N个滑动窗口周期内，利用移动后的滑动窗口对背光数据集合进行取样，将取样得到的第N+1个背光数据子集存入第二存储空间，并根据第N个背光数据子集，计算在第M行背光单元对应的各个像素中，与第N个背光数据子集对应的至少一个像素的补偿系数。在此情况下，在一个滑动窗口周期内，可以取得下一个滑动窗口周期中计算像素补偿系数所对应的背光数据子集，这样，在下一个滑动窗口周期内，可以直接根据取得的背光数据子集计算像素补偿系数，不需要等待取得该背光数据子集后在进行计算，并且，计算一个背光单元对应的至少一个像素的补偿系数与取样下一个背光单元对应的背光数据子集的过程可以同步进行，节省了数据处理的时间，提高了数据处理的效率。并且，本公开的实施例不用在取样背光数据子集之前，通过额外的存储空间存储背光数据集合，可以避免存储背光数据集合所耗费的时间，避免了存储背光数据集合所需的存储空间，节约了存储资源。
示例性地，背光数据集合对应的至少一行背光单元为一行背光单元。在此情况下，一个背光数据集合包括第M行背光单元的第一背光值；另一个背光数据集合包括第M+1行背光单元的第一背光值，此另一个背光数据集合可以是该一个背光数据集合的下一个背光数据集合。
示例性地，背光数据集合对应的至少一行背光单元为两行背光单元。例如，该两行背光单元包括第M行背光单元和第M+1行背光单元。在此情况下，第M个背光数据集合包括第M行背光单元的第一背光值和第M+1行背光单 元的第一背光值，第M+1个背光数据集合包括第M+1行背光单元的第一背光值和第M+2行背光单元的第一背光值。例如，在M＝1的情况下，第1个背光数据集合包括第1行背光单元的第一背光值和第2行背光单元的第一背光值，第2个背光数据集合包括第2行背光单元的第一背光值和第3行背光单元的第一背光值。
示例性地，背光数据集合对应的至少一行背光单元为多行背光单元，多行背光单元包括以第M行背光单元为中间行的至少三行背光单元。例如，至少三行背光单元的行数为奇数。
其中，至少三行背光单元以第M行背光单元为中间行指的是，沿背光单元排列的列方向，至少三行背光单元中的位于第M行背光单元的相对两侧的背光单元的行数相同，分别为至少一行。例如，至少三行背光单元的行数为W，W为大于或等于3的奇数，第M行背光单元为该W行背光单元中的第(W+1)/2行，沿背光单元排列的列方向，至少三行背光单元中的位于第M行背光单元的相对两侧的背光单元的行数均为(W-1)/2行。例如，W＝3，第M行背光单元为三行背光单元中的中间行，即，第M行背光单元为三行背光单元中的第二行背光单元，沿背光单元排列的列方向，三行背光单元中的位于第M行背光单元的相对两侧的背光单元的行数均为一行；例如，W＝5，第M行背光单元为五行背光单元中的中间行，即，第M行背光单元为五行背光单元中的第三行背光单元，沿背光单元排列的列方向，五行背光单元中的位于第M行背光单元的相对两侧的背光单元的行数均为两行。
例如，至少三行背光单元连续分布。例如，在第M行背光单元为第3行背光单元(即M＝3)的情况下，至少一行背光单元为三行背光单元，三行背光单元包括第2行背光单元、第3行背光单元和第4行背光单元，此时，第M个背光数据集合(即第3个背光数据集合)包括第2行至第4行背光单元的第一像素值；第M+1行背光单元为第4行背光单元的情况下，至少三行背光单元包括第3行背光单元、第4行背光单元和第5行背光单元，此时，第M+1个背光数据集合(即第4个背光数据集合)包括第3行至第5行背光单元的第一像素值。例如，至少一行背光单元为五行背光单元，在第M行背光单元为第3行背光单元(即M＝3)的情况下，五行背光单元为第1行至第5行背光单元，第3行背光单元为第1行至第5行背光单元的中间行，此时，第M个背光数据集合(即第3个背光数据集合)包括第1行至第5行背光单元的第一像素值；第M+1行背光单元为第4行背光单元的情况下，至少三行背光单元包括第2行至第6行背光单元，此时，第M+1个背光数据集合(即 第4个背光数据集合)包括第2行至第6行背光单元的第一像素值。
示例性地，在一个背光数据集合包括至少两行背光单元的第一背光值的情况下，至少两行背光单元的第一背光值依次排列；例如，至少两行背光单元的第一背光值沿多个背光单元排列的列方向依次排列。例如，参考图9，至少两行背光单元包括第1行至第5行背光单元的第一背光值的情况下，沿图9中的Y方向，第1行背光单元的第一背光值、第2行背光单元的第一背光值、第3行背光单元的第一背光值、第4行背光单元的第一背光值和第5行背光单元的第一背光值依次排列。例如，每行背光单元中各个背光单元的第一背光值沿多个背光单元排列的行方向排列。
又示例性地，在第M行背光单元为第一行背光单元(即第1行背光单元)的情况下，背光数据集合包括：沿多个背光单元排列的列方向依次排列的至少一行虚拟背光值、第一行背光单元的第一背光值和第二行背光单元的第一背光值。其中，每行虚拟背光值的个数与第一行背光单元的第一背光值的个数相等。至少一行虚拟背光值为零。
可以理解的是，如果以第一行背光单元为中心行，则第一行背光单元的上一行背光单元不存在，无法取得第一背光值，此时，将无法取得第一背光值的位置补零，以使每个滑动窗口取样得到的背光数据子集中的第一背光值的个数相同。例如，参考图10，在第1行第3列背光单元A(1,3)所对应的背光数据子集中，第1行第3列背光单元为该背光数据子集对应的5行5列背光单元阵列的中心，该背光数据子集中的5行5列背光单元阵列的前2行背光单元均不存在，即，5行5列阵列的前2行背光单元对应的第一背光值为虚拟背光值，该虚拟背光值为零，此时，背光数据子集包括2行5列虚拟背光值、第1行第1列至第5列背光单元的第一背光值、第2行第1列至第5列背光单元的第一背光值、以及第3行第1列至第5列背光单元的第一背光值。
示例性地，一个背光数据子集中的各第一背光值对应的多个背光单元构成的阵列，其阵列中心位置处的背光单元位于第一列背光单元，该一个背光数据子集包括至少一个虚拟像素值，例如滑动窗口无法获取到第一背光值的位置均为虚拟像素值。例如，一个背光数据子集中的各第一背光值对应的多个背光单元构成的3行3列的阵列，该阵列的中心位置处的背光单元为背光模组中的第2行第1列的背光单元，则该一个背光数据子集中的9个第一背光值分别为虚拟像素值、第1行第1列背光单元的第一背光值、第1行第2列背光单元的第一背光值、虚拟像素值、第2行第1列背光单元的第一背光值、第2行第2列背光单元的第一背光值、虚拟像素值、第3行第1列背光 单元的第一背光值、以及第3行第2列背光单元的第一背光值。
示例性地，根据第N个背光数据子集，计算在第M行背光单元对应的各个像素中，与第N个背光数据子集对应的至少一个像素的补偿系数，包括：根据公式
Figure PCTCN2020133146-appb-000002
得到所述至少一个像素的补偿系数。
其中，G为一个像素的补偿系数，γ为伽马校正的伽马值，B max为一个像素对应的背光单元的最大第一背光值，B psf为一个像素对应的第二背光值；一个像素对应的第二背光值为第N个背光数据子集中的第一背光值和该第N个背光数据子集对应的各背光单元在一个像素的对应位置的光学扩散系数之间的乘积。
示例性地，显示装置的发光亮度最大值对应的背光驱动值可以作为一个像素对应的背光单元的最大第一背光值(最大背光亮度驱动值)。例如，在像素值最大(例如像素灰阶为255)的情况下，通过调整每个背光单元的发光亮度，得到显示装置的发光亮度达到最大亮度(例如为1000nit)时所对应的背光驱动值，即作为像素对应的背光单元的最大第一背光值。其中，背光值与驱动电流呈线性关系，驱动电流与发光亮度近似呈线性关系。
示例性地，γ为显示装置对图像数据进行伽马校正过程中的伽马值。示例性地，γ的取值可以为2.2或2.4。
例如，在显示装置的最大像素值为255的情况下，像素在初始像素值下的理论的物理亮度(显示亮度)输出为
Figure PCTCN2020133146-appb-000003
由于在实际情况下局部区域背光控制会相互导致物理亮度输出有偏差，实际的物理亮度输出
Figure PCTCN2020133146-appb-000004
不满足理论的伽马曲线，因此，为了保证实际的亮度输出与理论的亮度输出相等，即，B 1＝B 2，实际的亮度输出变为
Figure PCTCN2020133146-appb-000005
也即
Figure PCTCN2020133146-appb-000006
在此情况下，可以得到像素的补偿系数
Figure PCTCN2020133146-appb-000007
可以理解的是，由于背光值与驱动电流呈线性关系，驱动电流与发光亮度呈线性关系，因此，为了描述方便，表达式中的B max可以作为像素对应的背光单元的最大第一背光值对应的显示亮度，B Psf可以作为像素的第二背光值对应的显示亮度。
示例性地，一个背光单元在一个像素的对应位置的光学扩散系数与该一 个背光单元与该一个像素的相对位置关系有关。例如相对位置关系包括参考距离和参考角度；例如，参考图12，参考距离Z为一个像素Q正投影在背光模组中的对应位置与每个背光单元210的参考点S之间的距离，该参考点S可以是背光单元210内的任一点，例如参考点S是背光单元210的中心点(例如几何中心或几何重心)；参考角度θ为像素Q正投影在背光模组中的对应位置与每个背光单元210的参考点S的连线与参考方向的夹角，参考方向为垂直于显示装置的厚度的平面内的任一方向，例如参考方向为图12中的X方向。
例如，在背光单元呈阵列排布的情况下，参考图5，以背光单元210的中心点O为坐标原点，以背光单元210的行方向X为横轴，列方向Y为纵轴，建立坐标系。测量得到该坐标系中的各个坐标点T的亮度值，并记录各个坐标点T与坐标原点O的距离F，以及各个坐标点T和坐标原点O的连线与横轴的夹角α，根据各个坐标点的亮度值和坐标原点的亮度值，得到背光单元210的光学扩散系数。这样，可以得到距离F、夹角α和光学扩散系数三者的对应关系列表。其中，光学扩散系数可以为各个坐标点T的亮度值和坐标原点O的亮度值之间的比值。例如，坐标原点O为背光单元210的最大亮度值所在的位置。在此情况下，可以根据相对位置关系，例如根据参考距离和参考角度，查找上述的距离F、夹角α和光学扩散系数三者的对应关系列表，以获取背光单元在参考距离和参考角度下的光学扩散系数。
这样，根据第N个背光数据子集中的第一背光值和第N个背光数据子集对应的各背光单元在一个像素的对应位置的光学扩散系数，可以得到一个像素对应的第二背光值。例如，在第N个背光数据子集对应的各背光单元构成的5行5列的阵列中，25个背光单元的第一背光值分别为BL 1～BL 25，一个像素对应的背光单元位于5行5列阵列中心位置处，25个背光单元在该一个像素的对应位置的光学扩散系数分别为Δ 1～Δ 25。在此情况下，该一个像素的第二背光值B psf＝(BL 1×Δ 1+BL 2×Δ 2+BL 3×Δ 3+……+BL 25×Δ 25)。
示例性地，背光单元的第一背光值的取样位置与背光单元对应，例如，第1行第1列背光单元A(1,1)的第一背光值的排布位置也为第1行第1列，排布位置可以表示为D(1,1)。参考图11A和图11B，在背光数据子集对应的多个背光单元呈5行5列背光单元阵列的情况下，以5行5列背光单元阵列的中心位置处的背光单元210为第i行第j列背光单元A(i,j)，背光单元A ij的第一背光值D(i,j)的数据地址为p。示例性地，i和j均为正整数。例如，在第一背光值的排布位置为负数的情况下，该第一背光值可以为虚拟背光值。其中u 表示一行背光单元有u列背光单元，u为正整数，例如u为192。
这样，5行5列背光单元阵列中的第1行第1列背光单元表示为A(i-2,j-2)，其第一背光值的排布位置为D(i-2,j-2)，其第一背光值的数据地址为p-2u-2；5行5列背光单元阵列中的第1行第2列背光单元表示为A(i-2,j-1)，其第一背光值的排布位置为D(i-2,j-1)，其第一背光值的数据地址为p-2u-1；5行5列背光单元阵列中的第1行第3列背光单元表示为A(i-2,j)，其第一背光值的排布位置为D(i-2,j)，其第一背光值的数据地址为p-2u；5行5列背光单元阵列中的第1行第4列背光单元表示为A(i-2,j+1)，其第一背光值的排布位置为D(i-2,j+1)，其第一背光值的数据地址为p-2u+1；5行5列背光单元阵列中的第1行第5列背光单元表示为A(i-2,j+2)，其第一背光值的排布位置为D(i-2,j+2)，其第一背光值的数据地址为p-2u+2。
5行5列背光单元阵列中的第2行第1列背光单元表示为A(i-1,j-2)，其第一背光值的排布位置为D(i-1,j-2)，其第一背光值的数据地址为p-u-2；5行5列背光单元阵列中的第2行第2列背光单元表示为A(i-1,j-1)，其第一背光值的排布位置为D(i-1,j-1)，其第一背光值的数据地址为p-u-1；5行5列背光单元阵列中的第2行第3列背光单元表示为A(i-1,j)，其第一背光值的排布位置为D(i-1,j)，其第一背光值的数据地址为p-u；5行5列背光单元阵列中的第2行第4列背光单元表示为A(i-1,j+1)，其第一背光值的排布位置为D(i-1,j+1)，其第一背光值的数据地址为p-u+1；5行5列背光单元阵列中的第2行第5列背光单元表示为A(i-1,j+2)，其第一背光值的排布位置为D(i-1,j+2)，其第一背光值的数据地址为p-u+2。
5行5列背光单元阵列中的第3行第1列背光单元表示为A(i,j-2)，其第一背光值的排布位置为D(i,j-2)，其第一背光值的数据地址为p-2；5行5列背光单元阵列中的第3行第2列背光单元表示为A(i,j-1)，其第一背光值的排布位置为D(i,j-1)，其第一背光值的数据地址为p-1；5行5列背光单元阵列中的第3行第3列背光单元表示为A(i,j)，其第一背光值的排布位置为D(i,j)，其第一背光值的数据地址为p；5行5列背光单元阵列中的第3行第4列背光单元表示为A(i,j+1)，其第一背光值的排布位置为D(i,j+1)，其第一背光值的数据地址为p+1；5行5列背光单元阵列中的第3行第5列背光单元表示为A(i,j+2)，其第一背光值的排布位置为D(i,j+2)，其第一背光值的数据地址为p+2。
5行5列背光单元阵列中的第4行第1列背光单元表示为A(i+1,j-2)，其第一背光值的排布位置为D(i+1,j-2)，其第一背光值的数据地址为p+u-2；5行5列背光单元阵列中的第4行第2列背光单元表示为A(i+1,j-1)，其第一背光 值的排布位置为D(i+1,j-1)，其第一背光值的数据地址为p+u-1；5行5列背光单元阵列中的第4行第3列背光单元表示为A(i+1,j)，其第一背光值的排布位置为D(i+1,j)，其第一背光值的数据地址为p+u；5行5列背光单元阵列中的第4行第4列背光单元表示为A(i+1,j+1)，其第一背光值的排布位置为D(i+1,j+1)，其第一背光值的数据地址为p+u+1；5行5列背光单元阵列中的第4行第5列背光单元表示为A(i+1,j+2)，其第一背光值的排布位置为D(i+1,j+2)，其第一背光值的数据地址为p+u+2。
5行5列背光单元阵列中的第5行第1列背光单元表示为A(i+2,j-2)，其第一背光值的排布位置为D(i+2,j-2)，其第一背光值的数据地址为p+2u-2；5行5列背光单元阵列中的第5行第2列背光单元表示为A(i+2,j-1)，其第一背光值的排布位置为D(i+2,j-1)，其第一背光值的数据地址为p+2u-1；5行5列背光单元阵列中的第5行第3列背光单元表示为A(i+2,j)，其第一背光值的排布位置为D(i+2,j)，其第一背光值的数据地址为p+2u；5行5列背光单元阵列中的第5行第4列背光单元表示为A(i+2,j+1)，其第一背光值的排布位置为D(i+2,j+1)，其第一背光值的数据地址为p+2u+1；5行5列背光单元阵列中的第5行第5列背光单元表示为A(i+2,j+2)，其第一背光值的排布位置为D(i+2,j+2)，其第一背光值的数据地址为p+2u+2。
在此情况下，可以通过改变i和j的取值，得到对应背光单元A(i,j)的第一背光值，相应地取样得到背光单元A(i,j)对应的背光数据子集，以计算背光单元A(i,j)中的至少一个像素补偿系数。
在一些实施例中，在第N个滑动窗口周期内，数据处理方法还包括：根据第N个背光数据子集对应的至少一个像素的补偿系数、以及一帧图像中至少一个像素的初始像素值，求得至少一个像素的补偿像素值。
例如，像素的补偿像素值V 2为该像素的补偿系数G与该像素的初始像素值V 1的乘积。例如，像素的补偿系数
Figure PCTCN2020133146-appb-000008
像素的初始像素值V 1，则像素的补偿像素值
Figure PCTCN2020133146-appb-000009
对于显示装置，例如液晶显示装置，背光模组给显示面板提供光源，用户观看的画面是背光模组的发光器件和显示面板上的像素的叠加的出光效果。由于液晶显示装置中的液晶层对背光模组的出射光具有透过率，在显示装置显示全黑画面的情况下，会有部分背光透过，导致显示装置出现漏光现象，导致显示效果下降。为了避免出现漏光，可以在显示较暗画面的同时， 降低背光的亮度，这样，即使液晶层具有一定的透过率，在较低的背光亮度下，也可以降低通过液晶层的光线，以实现全黑的显示效果；在明亮画面的部分，可以保持所需的背光亮度，实现亮画面的显示效果。示例性地，可以通过局部动态调光技术以避免显示出现漏光，例如，对背光模组划分多个背光单元(也可描述为背光分区)，至少一个像素对应一个背光单元显示画面进行区分，使得一个发光器件对应显示面板上至少一个像素，并根据与背光单元位置对应的至少一个像素的显示内容(即像素值大小)，动态控制背光的强度，一个背光单元中的发光器件的发光亮度受该背光单元对应的像素的控制，在较暗画面下可以降低背光单元的发光亮度，而在明亮画面下保持背光单元的发光亮度。
可以理解的是，显示画面上亮部分和暗部分存在相互衔接，对于显示画面上的一个显示区域，该显示区域对应的背光单元的发光亮度应该是由其对应的发光器件以及周围的数个发光器件共同完成。但由于该显示区域对应于背光模组上的背光单元与其周围的背光单元在亮度上存在差异，因此，当一个背光单元周围的背光单元中的发光器件的发光亮度明显降低时，该背光单元处的发光亮度也会受到影响，导致该背光单元对应的显示区域的显示亮度出现偏差。这样，对于衡量亮度和人眼对颜色感知的特征曲线，也即可以反应人眼对显示画面的实际感知的曲线，例如伽马曲线，由于暗部分的背光单元的亮度，导致伽马曲线在低像素值(即低灰阶)区间产生较明显失真，与标准的伽马曲线出现偏差。这样的失真会使得显示装置在显示暗部分画面时，人眼无法观看到画面细节，导致画面细节的丢失。
在此情况下，在显示装置进行显示的过程中，背光模组根据各个背光单元对应的第一背光值驱动背光单元发光，显示面板根据各个像素的补偿像素值进行显示，结合实际背光亮度对像素的像素值进行了补偿，可以避免因各个背光单元的发光相互干扰而的导致像素显示出现的偏差，可以避免伽马曲线出现失真，从而提高了显示装置的显示效果。
示例性地，在以逐行驱动的方式驱动显示面板的情况下，对多个像素的像素值进行补偿的过程也是逐行进行的。对于一个背光数据集合，滑动窗口的移动方向与背光单元的行方向相同，且滑动窗口的移动步长为一列背光单元对应的第一背光值。例如参考图7，对于一个背光数据集合，滑动窗口的移动方向与背光单元的行方向(即图7中的X方向)相同，第N个滑动窗口周期的滑动窗口相比于第N-1个滑动窗口周期的滑动窗口移动了一列背光单元的第一背光值的位置。
示例性地，第N个滑动窗口周期内，根据第N个背光数据子集计算的第一个像素的补偿系数的开始时刻，与第N+1个滑动窗口周期内，根据第N+1个背光数据子集计算的第一个像素的补偿系数的开始时刻，两者之间相差的时间为一个背光单元所对应的多个像素中的一行像素的像素周期。例如，在一个背光单元所对应的多个像素中的一行像素的个数为40个的情况下，第N个滑动窗口周期内，根据第N个背光数据子集计算的第一个像素的补偿系数的开始时刻，与第N+1个滑动窗口周期内，根据第N+1个背光数据子集计算的第一个像素的补偿系数的开始时刻之间的时间差为40个像素周期，该一个像素周期为根据背光数据子集计算一个像素的补偿系数所用的时间。
可以理解的是，在第N个滑动窗口周期内，在根据第N个背光数据子集计算一行像素(例如40个像素)的补偿系数的时间段内，取样得到第N+1个第N+1个背光数据子集，也即在第N+1个滑动窗口周期到来时，提前取出第N+1个背光数据子集，这样，在第N+1个滑动窗口周期内根据第N+1个背光数据子集计算对应的像素的补偿系数之前就可以得到第N+1个背光数据子集，相比于在第N+1个滑动窗口周期内取得第N+1个背光数据子集的情况，可以节省数据的取样时间，避免了数据处理延迟，提高了数据处理的效率。
示例性地，计算背光单元对应的一个像素的补偿系数所依据的背光数据子集的取样过程，与该一个像素的补偿系数的计算过程不在一个滑动窗口周期内，计算背光单元对应的一个像素的补偿系数所依据的背光数据子集的取样相比于该一个像素的补偿系数的计算提前，这样，在像素数据(即初始像素值)到来时，可以根据已得到的背光数据子集进行补偿系数的计算，并根据补偿系数和初始像素值得到补偿像素值。相比于在像素数据到来时才开始对背光数据子集进行取样，使得像素数据需要先存入一个存储空间内，待取样得到背光数据子集后才开始对像素进行补偿，计算补偿像素值的情况，本公开的实施例在像素数据到来时，可以直接根据背光数据子集进行计算，从而可以节省存储像素数据的存储空间，避免占用额外的存储资源。
在一些实施例中，参考图6，数据处理方法还包括：在第N+1个滑动窗口周期内，利用移动后的滑动窗口，对背光数据集合进行取样，将取样得到的第N+2个背光数据子集存入第一存储空间，并根据第N+1个背光数据子集，计算在第M行背光单元对应的各个像素中，与第N+1个背光数据子集对应的至少一个像素的补偿系数。
可以理解的是，在第N个滑动窗口周期内，根据第N个背光数据子集，计算在第M行背光单元对应的各个像素中，与第N个背光数据子集对应的至 少一个像素的补偿系数之后，会对第N+1个背光数据子集对应的至少一个像素的补偿系数进行计算，此时，第一存储空间中存储的第N个背光数据子集已使用结束。在此情况下，参考图13，在得到第N+2个背光数据子集的过程中，可以将第N+2个背光数据子集存入第一存储空间，在得到第N+3个背光数据子集的过程中，第N+3个背光数据子集可以存入第二存储空间，这样，使得第一存储空间和第二存储空间的交替存入数据，节省了显示装置的数据存储空间，节约了生产成本。
在一些实施例中，数据处理方法还包括：在背光数据集合对应的最后一个滑动窗口周期内，根据背光数据集合的最后一个背光数据子集，计算在第M行背光单元对应的各个像素中，与最后一个背光数据子集对应的至少一个像素的补偿系数，并利用移动后的滑动窗口对该背光数据集合的下一个背光数据集合进行取样，得到下一个背光数据集合的第一个背光数据子集。
可以理解的是，参考图14，一个背光数据集合包括第M行背光单元的第一背光值，该一个背光数据集合的下一个背光数据集合包括第M+1行背光单元的第一背光值。一个背光数据集合的最后一个背光数据子集为，该一个背光数据集合中的第M行背光单元对应的最后一行像素计算补偿系数所采用的背光数据子集，并在最后一个滑动窗口周期，对一个背光数据集合中的第M行背光单元对应的最后一行像素计算补偿系数。下一个背光数据集合的第一个背光数据子集为，该一个背光数据集合中的第M行背光单元对应的第一行像素计算补偿系数所采用的背光数据子集。
示例性地，沿背光单元排列的行方向移动，一个滑动窗口相比于其上一个滑动窗口沿行方向移动一列背光单元的位置。
示例性地，一个滑动窗口取样得到的背光数据子集对应的多个背光单元呈阵列排布。例如，在第M行背光单元对应的各个像素中计算补偿系数的至少一个像素对应的背光单元的位置处于滑动窗口取样得到的背光数据子集对应的多个背光单元的阵列的中心，例如，一个滑动窗口取样得到的背光数据子集对应的多个背光单元呈5行5列阵列，则在第M行背光单元对应的各个像素中计算补偿系数的至少一个像素对应的背光单元的位置位于5行5列阵列的中心，即位于5行5列阵列的第3行第3列位置处的背光单元。
在此情况下，在一个背光数据集合对应的最后一个滑动窗口周期内，滑动窗口滑动对下一个背光数据集合进行取样，得到下一个背光数据集合的第一个背光数据子集。例如参考图14，该一个背光数据集合包括以第M行背光单元为中间行的多行背光单元的第一背光值，下一个背光数据集合包括以第 M+1行背光单元为中间行的多行背光单元的第一背光值，这样第一个背光数据子集中的各第一背光值对应的背光单元包括第M+1行背光单元中的第一个背光单元(第一列背光单元)的第一背光值。并且，在第一个背光数据子集中的各第一背光值对应的背光单元呈阵列排布的情况下，该第M+1行背光单元中的第一个背光单元位于阵列的中心位置。例如，滑动窗口从一行背光单元的最后一个背光单元移动至下一行背光单元的第一个背光单元，对以第一个背光单元为中心的背光单元阵列对应的第一背光值进行取样。这样，可以使得滑动窗口在两个背光数据集合之间的移动具有连续性，以实现对数据的连续处理。
在一些实施例中，一帧图像对应的各背光单元的第一背光值是根据该一帧图像的上一帧图像的各像素的初始像素值计算得到。在显示面板显示该一帧图像情况下，一帧图像对应的各背光单元的第一背光值被配置为驱动背光模组。
示例性地，根据第K-1帧图像的图像数据中的各像素的初始像素值，计算得到第K-1帧图像对应的各背光单元的第一背光值。在第K帧图像到来时，根据该第K-1帧图像对应的各像素的初始像素值计算得到的各背光单元的第一背光值，对第K帧图像对应的各像素的像素值进行补偿，此时，第K帧图像对应的背光数据集合中的第一背光值为第K-1帧图像对应的各像素的初始像素值计算得到。其中，K-1为正整数。其中，在显示面板显示第K帧图像的情况下，第K帧图像对应的各背光单元的第一背光值被配置为驱动背光模组。
可以理解的是，由于相邻两帧图像的间隔时间较短，因此相邻两帧图像对应的背光单元的第一背光值近似相等。这样，在对一帧图像的图像数据进行处理的过程中，可以使用上一帧图像的背光数据集合，无需根据当前帧图像的图像数据计算各个背光单元的第一背光值，节省了数据处理的时间，从而提高了数据处理的效率。
需要说明的是，对于第一帧图像对于的背光数据集合的第一背光值可以是由第一帧图像对于的各像素的初始像素值计算得到。
本公开的实施例提供一种数据处理装置。例如，数据处理装置应用于上述的显示装置中。
针对第M个背光数据集合，所述第M个背光数据集合包括至少一行背光单元的第一背光值，至少一行背光单元包含第M行背光单元，M为正整数。数据处理装置被配置为在第N-1个滑动窗口周期内，利用滑动窗口对第M个 背光数据集合进行取样，将取样得到的第N个背光数据子集存入第一存储空间；及，在第N个滑动窗口周期内，利用移动后的滑动窗口对所述第M个背光数据集合进行取样，将取样得到的第N+1个背光数据子集存入第二存储空间，并根据第N个背光数据子集，计算在第M行背光单元对应的各个像素中，与第N个背光数据子集对应的至少一个像素的补偿系数。其中，N-1为正整数。
在一些实施例中，数据处理装置还被配置为在第N+1个滑动窗口周期内，利用移动后的滑动窗口，对第M个背光数据集合进行取样，将取样得到的第N+2个背光数据子集存入第一存储空间，并根据第N+1个背光数据子集，计算在第M行背光单元对应的各个像素中，与第N+1个背光数据子集对应的至少一个像素的补偿系数。
在一些实施例中，数据处理装置还被配置为在第M个背光数据集合对应的最后一个滑动窗口周期内，根据第M个背光数据集合的最后一个背光数据子集，计算在第M行背光单元对应的各个像素中，与最后一个背光数据子集对应的至少一个像素的补偿系数，并利用移动后的滑动窗口对第M+1个背光数据集合进行取样，得到第M+1个背光数据集合的第一个背光数据子集。
在一些实施例中，数据处理装置还被配置为，在第N个滑动窗口周期内，根据与第N个背光数据子集对应的至少一个像素的补偿系数、以及一帧图像中至少一个像素的初始像素值，求得至少一个像素的补偿像素值。
需要说明的是，上述数据处理装置的有益效果和上述一些实施例所述的数据处理方法的有益效果相同，此处不再赘述。
本公开的一些实施例提供了一种非瞬态的计算机可读存储介质，该计算机可读存储介质中存储有计算机程序指令，计算机程序指令在处理器上运行时，使得计算机执行如上述实施例中任一实施例所述的数据处理方法。
示例性地，文中的计算机可以是上述的显示装置。
示例性地，上述计算机可读存储介质可以包括，但不限于：磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，CD(Compact Disk，压缩盘)、DVD(Digital Versatile Disk，数字通用盘)等)，智能卡和闪存器件(例如，EPROM(Erasable Programmable Read-Only Memory，可擦写可编程只读存储器)、卡、棒或钥匙驱动器等)。本公开描述的各种计算机可读存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读存储介质。术语“机器可读存储介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
本公开的一些实施例还提供了一种计算机程序产品。该计算机程序产品包括计算机程序指令，在计算机上执行该计算机程序指令时，该计算机程序指令使计算机执行如上述实施例所述的数据处理方法中的一个或多个步骤。
本公开的一些实施例还提供了一种计算机程序。当该计算机程序在计算机上执行时，该计算机程序使计算机执行如上述实施例所述的数据处理方法中的一个或多个步骤。
上述非瞬态的计算机可读存储介质、计算机程序产品及计算机程序的有益效果和上述一些实施例所述的数据处理方法的有益效果相同，此处不再赘述。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以所述权利要求的保护范围为准。

Claims (18)

  1. 一种数据处理方法，应用于显示装置中，所述显示装置包括：显示面板、背光模组、第一存储空间和第二存储空间；所述显示面板和所述背光模组相对设置；所述显示面板包括多个像素，所述背光模组包括多个背光单元，每个背光单元与至少一个像素位置对应；
    针对一个背光数据集合，所述背光数据集合包括至少一行背光单元的第一背光值，所述至少一行背光单元包含第M行背光单元，所述M为正整数，所述数据处理方法包括：
    在第N-1个滑动窗口周期内，利用滑动窗口对所述背光数据集合进行取样，将取样得到的第N个背光数据子集存入所述第一存储空间；所述N-1为正整数；
    在第N个滑动窗口周期内，利用移动后的所述滑动窗口对所述背光数据集合进行取样，将取样得到的第N+1个背光数据子集存入所述第二存储空间，并根据所述第N个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述第N个背光数据子集对应的至少一个像素的补偿系数。
  2. 根据权利要求1所述的数据处理方法，还包括：
    在第N+1个滑动窗口周期内，利用移动后的所述滑动窗口，对所述背光数据集合进行取样，将取样得到的第N+2个背光数据子集存入所述第一存储空间，并根据所述第N+1个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述第N+1个背光数据子集对应的至少一个像素的补偿系数。
  3. 根据权利要求1或2所述的数据处理方法，还包括：
    在所述背光数据集合对应的最后一个滑动窗口周期内，根据所述背光数据集合的最后一个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述最后一个背光数据子集对应的至少一个像素的补偿系数，并利用移动后的所述滑动窗口对所述背光数据集合的下一个背光数据集合进行取样，得到所述下一个背光数据集合的第一个背光数据子集。
  4. 根据权利要求1～3中任一项所述的数据处理方法，其中，所述至少一行背光单元为多行背光单元，所述多行背光单元包括以所述第M行背光单元为中间行的至少三行背光单元。
  5. 根据权利要求1～3中任一项所述的数据处理方法，其中，在所述第M行背光单元为第一行背光单元的情况下，所述背光数据集合包括：沿所述多个背光单元排列的列方向依次排列的至少一行虚拟背光值、所述第一行背光 单元的第一背光值和第二行背光单元的第一背光值；
    每行虚拟背光值的个数与所述第一行背光单元的第一背光值的个数相等；所述至少一行虚拟背光值为零。
  6. 根据权利要求1～5中任一项所述的数据处理方法，其中，所述第N个背光数据子集对应的各背光单元呈阵列排布，与所述第N个背光数据子集对应的至少一个像素为阵列的中心位置处的背光单元对应的至少一个像素。
  7. 根据权利要求1～6中任一项所述的数据处理方法，其中，在所述第N个滑动窗口周期内，所述数据处理方法还包括：
    根据与所述第N个背光数据子集对应的至少一个像素的补偿系数、以及一帧图像中所述至少一个像素的初始像素值，求得所述至少一个像素的补偿像素值。
  8. 根据权利要求7所述的数据处理方法，其中，所述一帧图像对应的各背光单元的第一背光值是根据该一帧图像的上一帧图像的各像素的初始像素值计算得到；在所述显示面板显示该一帧图像情况下，所述一帧图像对应的各背光单元的第一背光值被配置为驱动所述背光模组。
  9. 根据权利要求1～8中任一项所述的数据处理方法，其中，所述根据所述第N个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述第N个背光数据子集对应的至少一个像素的补偿系数，包括：
    根据公式
    Figure PCTCN2020133146-appb-100001
    得到所述至少一个像素的补偿系数；其中，G为一个像素的补偿系数，γ为伽马校正的伽马值，B max为所述一个像素对应的背光单元的最大第一背光值，B psf为所述一个像素对应的第二背光值；所述一个像素对应的第二背光值为所述第N个背光数据子集中的第一背光值和该第N个背光数据子集对应的各背光单元在所述一个像素的对应位置的光学扩散系数之间的乘积。
  10. 一种数据处理装置，应用于显示装置中，所述显示装置包括：显示面板、背光模组、第一存储空间和第二存储空间；所述显示面板和所述背光模组相对设置；所述显示面板包括多个像素，所述背光模组包括多个背光单元，每个背光单元与至少一个像素位置对应；
    针对一个背光数据集合，所述背光数据集合包括至少一行背光单元的第一背光值，所述至少一行背光单元包含第M行背光单元，所述M为正整数，所述数据处理装置被配置为，在第N-1个滑动窗口周期内，利用滑动窗口对所述背光数据集合进行取样，将取样得到的第N个背光数据子集存入所述第一存储空间；及，在第N个滑动窗口周期内，利用移动后的所述滑动窗口对 所述背光数据集合进行取样，将取样得到的第N+1个背光数据子集存入所述第二存储空间，并根据所述第N个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述第N个背光数据子集对应的至少一个像素的补偿系数；
    所述N-1为正整数。
  11. 根据权利要求10所述的数据处理装置，其中，所述数据处理装置还被配置为，在第N+1个滑动窗口周期内，利用移动后的所述滑动窗口，对所述背光数据集合进行取样，将取样得到的第N+2个背光数据子集存入所述第一存储空间，并根据所述第N+1个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述第N+1个背光数据子集对应的至少一个像素的补偿系数。
  12. 根据权利要求10或11所述的数据处理装置，其中，所述数据处理装置还被配置为，在所述背光数据集合对应的最后一个滑动窗口周期内，根据所述背光数据集合的最后一个背光数据子集，计算在所述第M行背光单元对应的各个像素中，与所述最后一个背光数据子集对应的至少一个像素的补偿系数，并利用移动后的所述滑动窗口对所述背光数据集合的下一个背光数据集合进行取样，得到所述下一个背光数据集合的第一个背光数据子集。
  13. 根据权利要求10～12中任一项所述的数据处理装置，其中，所述数据处理装置还被配置为，在所述第N个滑动窗口周期内，根据与所述第N个背光数据子集对应的至少一个像素的补偿系数、以及一帧图像中所述至少一个像素的初始像素值，求得所述至少一个像素的补偿像素值。
  14. 一种数据处理装置，应用于显示装置，所述数据处理装置包括：
    存储器；所述存储器中存储一个或多个计算机程序；
    处理器；所述处理器与所述存储器耦接；所述处理器被配置为执行所述计算机程序，以使得所述显示装置实现如权利要求1～9中任一项所述的数据处理方法。
  15. 一种数据处理装置，所述数据处理装置为芯片；所述芯片被配置为实现如权利要求1～9中任一项所述的数据处理方法。
  16. 一种显示装置，包括：
    显示面板；所述显示面板包括多个像素；
    背光模组，与所述显示面板相对设置；所述背光模组包括多个背光单元，每个背光单元与至少一个像素位置对应；
    第一存储空间；
    第二存储空间；和
    如权利要求10～13中任一项所述的数据处理装置；或者，如权利要求14所述的数据处理装置；或者，如权利要求15所述的数据处理装置。
  17. 根据权利要求16所述的显示装置，其中，所述第一存储空间和所述第二存储空间位于至少一个缓存内。
  18. 一种非瞬态的计算机可读存储介质，其存储有计算机程序，其中，所述计算机程序在计算机运行时，使得计算机实现如权利要求1～9中任一项所述的数据处理方法。
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