WO2022006755A1 - 显示控制装置及其获取背光板光强分布的方法 - Google Patents
显示控制装置及其获取背光板光强分布的方法 Download PDFInfo
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- WO2022006755A1 WO2022006755A1 PCT/CN2020/100709 CN2020100709W WO2022006755A1 WO 2022006755 A1 WO2022006755 A1 WO 2022006755A1 CN 2020100709 W CN2020100709 W CN 2020100709W WO 2022006755 A1 WO2022006755 A1 WO 2022006755A1
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- light intensity
- backlight
- distribution information
- intensity distribution
- display
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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
Definitions
- the present disclosure relates to the technical field of backlight displays, and in particular, to a display control device and a method for obtaining the light intensity distribution of a backlight panel.
- Backlit displays typically include a backlight panel and a liquid crystal display panel (LCD).
- the liquid crystal display panel is composed of a color filter substrate having red, green and blue color filter patterns and a liquid crystal layer.
- Backlight panels consist of light emitting diodes (LEDs) or fluorescent light sources.
- the liquid crystal display panel itself does not have light-emitting properties.
- the liquid crystal display panel is illuminated by a backlight and selectively filters some colors, thereby displaying images of different colors.
- the commonly used backlight panels are edge-type backlight panels or direct-type backlight panels.
- the light intensity distribution information of the entire backlight panel is obtained by lighting the LED lamps on the entire backlight panel, and the video image signal is processed based on the light intensity distribution information of the backlight panel to display the video image on the liquid crystal display panel. Since the light intensity distribution information of the backlight board is obtained when the LED lights on the entire backlight board are lit, the backlight brightness of the backlight board cannot be dynamically adjusted with the change of the display content, so that when the image display content is dark, the backlight The utilization rate of light intensity of the board is not high, resulting in energy waste. In addition, the transmittance of the liquid crystal display panel cannot be adjusted to 0%, resulting in poor contrast when the liquid crystal display displays video images.
- the purpose of the present disclosure is to provide a display control device and a method for obtaining the light intensity distribution of a backlight panel, so as to solve the problems existing in the related art.
- a display control device including one or more integrated circuits
- the one or more integrated circuits include:
- the processing unit is used to determine the light intensity distribution information corresponding to the backlight panel of the display according to the data detected by the area array brightness detection device, the area array brightness detection device is located in front of the screen of the display, and is used to detect whether the display is in image data when at least one backlight block of the backlight panel is lit;
- a display main control circuit configured to receive an image video signal, and determine the initial transmittance of the display and the initial light intensity of the backlight panel according to the image video signal;
- the adjustment circuit is used to adjust the light intensity of the backlight panel according to the light intensity distribution information, and adjust the transmittance of the display, so that the adjusted light intensity of the backlight panel is the same as the adjusted light intensity of the display.
- the product of transmittance is equal to the product of the initial transmittance and the initial light intensity.
- a method for obtaining the light intensity distribution of a backlight panel the method is applied to the processing unit in the display control device described in the above-mentioned first part, and the method includes:
- the image data corresponding to any one of the backlight blocks detected by the area array brightness detection device obtain the light intensity distribution information corresponding to the backlight block;
- the light intensity distribution information corresponding to the backlight block is used as the light intensity distribution information corresponding to each of the backlight blocks of the backlight panel, so as to obtain the light intensity distribution information of the backlight panel.
- a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements the steps of any one of the above-mentioned methods in the second part.
- the processing unit determines the light intensity distribution information corresponding to the backlight panel of the display according to the data detected by the area array brightness detection device, wherein the area array brightness detection device is located in front of the screen of the display, and the area array brightness detection device is used to detect that the display is in the Image data when at least one backlight block of the backlight panel is turned on.
- the display main control circuit receives the image video signal, and determines the initial transmittance of the display and the initial light intensity of the backlight panel according to the image video signal.
- the adjustment circuit adjusts the light intensity of the backlight panel according to the light intensity distribution information, and adjusts the transmittance of the display, so that the adjusted light intensity of the backlight panel and the adjusted transmittance of the display is equal to the product of the initial transmittance and the initial light intensity, so that the display control device controls the display to display the image received by the main control circuit according to the adjusted light intensity of the backlight and the adjusted transmittance of the display video.
- the obtained light intensity distribution information of the backlight panel can include the light intensity distribution information of each backlight block. Light intensity distribution.
- the grayscale information of the image area corresponding to the backlight block in the video image and the light of other backlight blocks are combined.
- the diffusion effect adjusts the light intensity of the backlight block, and then adjusts the transmittance of the pixel area on the display corresponding to the backlight block according to the adjusted light intensity of each backlight block, which can overcome the problems in the related art.
- FIG. 1 is a schematic structural diagram of a display control apparatus according to an exemplary embodiment of the present disclosure.
- FIG. 2 is a schematic structural diagram of another display control apparatus according to an exemplary embodiment of the present disclosure.
- FIG. 3A is a schematic diagram of a backlight block according to an exemplary embodiment of the present disclosure.
- FIG. 3B is a schematic diagram illustrating a backlight block corresponding to a pixel area on a display according to an exemplary embodiment of the present disclosure.
- FIG. 4 is a light intensity distribution diagram of a backlight block according to an exemplary embodiment of the present disclosure.
- FIG. 5A is a predetermined image according to an exemplary embodiment of the present disclosure.
- FIG. 5B is a captured image according to an exemplary embodiment of the present disclosure.
- FIG. 6 is a flow chart of a method for obtaining light intensity distribution of a backlight panel according to an exemplary embodiment of the present disclosure.
- Backlit displays generally include a backlight panel and a liquid crystal display panel.
- the liquid crystal display panel is composed of a color filter substrate having red, green and blue color filter patterns and a liquid crystal layer.
- the backlight panel consists of light-emitting diodes or fluorescent light sources.
- the liquid crystal display panel itself does not have light-emitting properties.
- the liquid crystal display panel is illuminated by a backlight and selectively filters some colors, thereby displaying images of different colors.
- the commonly used backlight panels are edge-type backlight panels or direct-type backlight panels.
- the light intensity distribution information of the entire backlight panel is obtained by lighting the LED lamps on the entire backlight panel, or the light intensity distribution information of the entire backlight panel is fitted based on the performance parameters of each LED lamp.
- the distribution information processes the video image signal to display the video image on the liquid crystal display panel. Since the light intensity distribution information of the backlight board is obtained when the LED lights on the entire backlight board are lit, the backlight brightness of the backlight board cannot be dynamically adjusted with the change of the display content, so that when the display content is dark, the backlight board The utilization rate of light intensity is not high, resulting in energy waste. In addition, the transmittance of the liquid crystal display panel cannot be adjusted to 0%, resulting in poor contrast when the liquid crystal display displays video images.
- embodiments of the present disclosure provide a display control device and a method for obtaining the light intensity distribution of a backlight panel to overcome the above-mentioned problems in the related art.
- the above technical solution is described by taking the light source on the backlight board as an LED lamp as an example.
- the display control apparatus 100 includes one or more integrated circuits;
- the one or more integrated circuits include: a processing unit 101, configured to determine the light intensity distribution information corresponding to the backlight panel of the display according to the data detected from the area array brightness detection device 200 (see FIG. 2 ).
- the array brightness detection device is located in front of the screen of the display, and is used to detect the image data of the display when at least one backlight block of the backlight panel is lit;
- the display main control circuit 102 is used to receive the image video signal, and according to The image video signal determines the initial transmittance of the display and the initial light intensity of the backlight;
- the adjustment circuit 103 is used to adjust the light intensity of the backlight according to the light intensity distribution information, and
- the transmittance of the display is adjusted so that the product of the adjusted light intensity of the backlight panel and the adjusted transmittance of the display is equal to the product of the initial transmittance and the initial light intensity.
- the area array brightness detection device 200 may be an LED light intensity distribution tester, a camera, or the like.
- the area array brightness detection device 200 is connected to the processing unit 101 .
- the area array brightness detection device 200 is located in front of the screen of the display, specifically, directly in front of the display or directly in front of the display area corresponding to any backlight block.
- the area array brightness detection device 200 is used to detect the image data of the display when at least one backlight block of the backlight is lit, and transmit the detected data to the processing unit 101, and the processing unit 101 determines the light of the backlight of the display according to the data. Strong distribution information.
- the backlight panel can be divided into a plurality of identical backlight blocks.
- four adjacent LED lamps on the backlight panel can be used as a backlight block.
- the LED light arrays on the board are divided into multiple backlight blocks. It is not difficult to understand that other numbers of adjacent LED lamps on the backlight board can also be used as a backlight block.
- the present disclosure does not specifically limit how many LED lamps each backlight block has.
- lighting control can be performed individually for each backlight block. It should be understood that, after the backlight panel is divided into a plurality of identical backlight blocks, the light intensity distribution of all the backlight blocks should be the same. Therefore, the processing unit 101 can determine the light intensity distribution information when the entire backlight panel is lit according to the image data of the display detected by the area array brightness detection device 200 when any one of the backlight blocks of the backlight panel is lit. It should be noted that after the lamp array of the backlight panel is divided into blocks, each backlight block of the backlight panel corresponds to a partial pixel area of the display, that is, each backlight block corresponds to a pixel area on the display. For example, as shown in FIG. 3B , one backlight block corresponds to one pixel area on the display.
- the display main control circuit 102 When the display main control circuit 102 receives the image video signal to be displayed, the initial transmittance of the display and the initial light intensity of the backlight panel are determined according to the image video signal. Specifically, the display main control circuit 102 determines the initial transmittance corresponding to each pixel on the display and the initial brightness of each backlight block according to the image video signal.
- the adjustment circuit 103 adjusts the light intensity of the backlight panel according to the light intensity distribution information of the backlight panel.
- each pixel area on the display corresponds to an image area in each frame of image, so the light intensity of the backlight panel can be adjusted according to the
- the light intensity distribution information of each backlight block in the distribution information and the target gray value of each image area in the video image corresponding to each backlight block are used to independently adjust the light intensity of the backlight block.
- the target gray value is determined according to the gray value of each pixel in the image area, and may be the maximum gray value among the gray values of all pixels in the image area, or the image The average value or other statistical value of the gray value of each pixel in the region.
- the transmittance of the pixel area on the display corresponding to the backlight block can be adjusted according to the adjusted light intensity of each backlight block, so that the adjusted light intensity of any backlight block of the backlight panel corresponds to that on the display.
- the product of the adjusted transmittance of the pixel area is equal to the product of the initial transmittance of the pixel area and the initial light intensity of the backlight panel.
- the processing unit 101 determines the light intensity distribution information corresponding to the backlight panel of the display according to the data detected from the area array brightness detection device 200, wherein the area array brightness detection device 200 is located in the area of the display.
- the front of the screen is used for detecting image data of the display when at least one backlight block of the backlight panel is lit.
- the display main control circuit 102 receives the image and video signals, and determines the initial transmittance of the display and the initial light intensity of the backlight panel according to the image and video signals.
- the adjustment circuit 103 can adjust the light intensity of the backlight panel according to the light intensity distribution information, and adjust the transmittance of the display, so that the adjusted light intensity of the backlight panel and the adjusted transmittance of the display can be adjusted.
- the product of the pass rate is equal to the product of the initial transmittance and the initial light intensity, so that the display control device controls the display main control circuit according to the adjusted light intensity of the backlight panel and the adjusted transmittance of the display. image video.
- the obtained light intensity distribution information of the backlight panel can include each backlight block. Individual light intensity distributions. This is beneficial to adjust the light intensity of each backlight block of the backlight panel respectively.
- the grayscale information of the image area corresponding to the backlight block in the video image and the light diffusion of other backlight blocks are combined. Influence adjusts the light intensity of the backlight block, and then adjusts the transmittance of the pixel area on the display corresponding to the backlight block according to the adjusted light intensity of each backlight block, so as to overcome the problems in the related art.
- the light intensity of the backlight block can be determined and adjusted.
- the purpose of adjusting the light intensity of each backlight block on the backlight panel corresponding to each image region can be achieved according to the content of different image regions in the same frame of video image.
- the light intensity of the entire backlight panel can be determined and adjusted according to each frame of the video image to be displayed on the display.
- the backlight panel corresponding to each frame of image can be dynamically adjusted according to images of different frames. of light intensity. In this way, the utilization rate of the light intensity of the backlight panel is improved, and the energy waste is reduced.
- the above-mentioned method of determining the light intensity distribution information of the entire backlight panel according to the image data detected by the area array brightness detection device 200 when any backlight block is lit alone is beneficial to the use of the backlight block as the backlight block for the backlight panel.
- one or more adjacent backlight blocks can be used as a backlight area according to requirements. Therefore, this method is convenient to divide the LED lamp array of the backlight panel into different backlight areas according to different requirements.
- the backlight board is a backlight board after each backlight block is corrected for the brightness consistency of the lamp beads
- the processing unit 101 is specifically configured to: acquire the backlight according to the image data corresponding to any one of the backlight blocks.
- the light intensity distribution information corresponding to the backlight block is used as the light intensity distribution information corresponding to each of the backlight blocks of the backlight panel, so as to obtain the light intensity distribution information of the backlight panel;
- the backlight block corresponding to the target pixel point and the backlight Weight distribution is performed on the light intensity distribution information corresponding to other backlight blocks around the block, so that the light intensity of the target pixel is consistent with the light intensity of other pixels, and new light intensity distribution information of the backlight panel is obtained.
- the backlight board includes a plurality of backlight blocks, and each backlight block on the backlight board is corrected by the brightness consistency of the lamp beads, so that each lamp bead has the same light intensity/brightness under the same grayscale, and each backlight block should have the same light intensity/brightness. the same light intensity distribution.
- the processing unit 101 determines the light intensity distribution information of the backlight panel by performing the following steps:
- the light intensity distribution information corresponding to the backlight block is acquired. Taking the backlight block shown in FIG. 3A as an example, the obtained light intensity distribution corresponding to the backlight block is shown in FIG. 4 .
- the light intensity distribution information corresponding to the backlight block is used as the light intensity distribution information corresponding to each of the backlight blocks of the backlight panel, so that the light intensity distribution information of the backlight panel can be calculated.
- the processing unit 101 may further perform the following steps: when controlling the backlight When each backlight block on the board is lit for the same grayscale, it is judged whether there is a target pixel on the display whose light intensity is inconsistent with the light intensity of other pixels.
- the light intensity distribution information corresponding to other backlight blocks around the backlight block is weighted, so that the light intensity of the target pixel is consistent with the light intensity of other pixels, so as to obtain the light intensity distribution information of the backlight panel after the weight distribution process.
- weight allocation is similar to the weight allocation strategy in the related art, and will not be described in detail here.
- the light intensity distribution information of any one backlight block in the case of considering the light diffusion, after calculating the light intensity distribution information of the entire backlight panel.
- the calculated light intensity distribution of the backlight board is weighted, and the light intensity distribution information of the backlight board after the weight distribution process is obtained.
- the light intensity distribution information of the backlight panel after the weight distribution process it can be ensured that the light intensity of each pixel on the display is consistent under the same grayscale, thereby improving the uniformity and accuracy of the video image on the display.
- the processing unit 101 acquires the light intensity distribution information corresponding to the backlight block according to the image data corresponding to any one of the backlight blocks, which may specifically include the following steps:
- the sub-light intensity distribution information in any quadrant is acquired, and the The light intensity distribution information is subjected to X-axis symmetrical copying and Y-axis symmetrical copying operations in sequence to obtain light intensity distribution information corresponding to the backlight block.
- the LED light array included in the backlight block is a symmetrical array, such as the backlight block shown in FIG. 3A
- the light intensity distribution of the backlight block is symmetrical as shown in FIG. 4 . Therefore, an achievable implementation is to acquire, according to the image data corresponding to any backlight block, the sub-light intensity distribution information in any quadrant in the four quadrants of the coordinate axis with the center of the backlight block as the origin, The sub-light intensity distribution information is sequentially subjected to X-axis symmetrical copying and Y-axis symmetrical copying operations to obtain complete light intensity distribution information corresponding to the backlight block.
- another achievable implementation is to acquire, according to the image data corresponding to any backlight block, the sub-light intensity distribution information in any quadrant in the four quadrants of the coordinate axis with the center of the backlight block as the origin , and perform Y-axis symmetrical copying and X-axis symmetrical copying operations on the sub-light intensity distribution information in turn to obtain complete light intensity distribution information corresponding to the backlight block.
- the obtained light intensity distribution of the backlight block can be made more symmetrical and uniform.
- the display main control circuit 102 is further configured to control the display to display a predetermined image; the processing unit 101 is further configured to: acquire the image obtained by shooting the predetermined image by the area array brightness detection device 200 capturing an image; determining a conversion parameter for converting the captured image to the predetermined image through an image transformation algorithm; the processing unit 101 is further configured to obtain the image data corresponding to any one of the backlight blocks when After the light intensity distribution information corresponding to the backlight block is obtained, the light intensity distribution information is converted according to the conversion parameter to obtain the corrected light intensity distribution information of the backlight block.
- the image change algorithm may be a distortion correction algorithm or an image scaling algorithm. There is no specific limitation to this disclosure.
- the image data captured by the area array brightness detection device 200 for the display may have shape distortion.
- the image data detected by the array brightness detection device 200 may be corrected.
- the display is controlled by the display main control circuit 102 to display a predetermined image, for example, the predetermined image as shown in FIG. 5A .
- the processing unit 101 obtains a captured image obtained by the area array brightness detection device 200 for the predetermined image, for example, the captured image shown in 5B; through a distortion correction algorithm and/or a scaling algorithm, it is determined that the captured image can be converted into is the conversion parameter of the predetermined image.
- conversion parameters can be expressed as:
- the processing unit 101 converts the light intensity distribution information according to the conversion parameter,
- the corrected light intensity distribution information of the backlight block is obtained.
- the light intensity distribution information is converted according to the conversion parameter, and the calculation process of obtaining the corrected light intensity distribution information of the backlight block can be characterized as:
- (x, y) represents the data at each position in the actual light intensity distribution information of the backlight block
- (u, v) represents the data at each position in the light intensity distribution information obtained by the area array brightness detection device 200 .
- the light intensity distribution information obtained by the array brightness detection device 200 can be converted according to the conversion parameters, so as to obtain the corrected light intensity distribution information of the backlight block, and then make the corrected light intensity distribution information of the backlight block
- the light intensity distribution information of the backlight panel determined by the distribution information is more accurate.
- the light intensity distribution information is two-dimensional array data, and each element in the two-dimensional array data represents the light intensity of each pixel in the pixel area corresponding to the backlight block on the display; the The processing unit 101 is also used for:
- the quantization processing includes floating point number fixed point processing, wherein the processing unit is performing quantization processing on the light intensity distribution information.
- the error caused by the quantization process to any pixel point is dispersed to the light intensity of the adjacent pixel points of the pixel point.
- the light intensity distribution information (the unit of light intensity value is candela, candela in English, cd for short) obtained by the area array brightness detection device 200 is data of floating point type. Therefore, in order to facilitate the calculation, the light intensity distribution information of the backlight block is subjected to floating-point fixed-point processing. It is not difficult to understand that, in the process of performing floating-point fixed-point processing on the light intensity distribution information of the backlight block, a conversion error will be caused. Therefore, in order to avoid the calculation error in the quantization process, the error caused by the quantization process to any pixel point can be dispersed to the light intensity of the adjacent pixel points of the pixel point.
- the error brought in during the quantization process is dispersed to adjacent pixel positions by the error diffusion method, which can reduce the error between the calculated light field distribution information and the actual light field distribution information.
- the display main control circuit 102 is further configured to configure the red, green and blue transmittances of all pixels on the display to a preset transmittance before the area array brightness detection device 200 starts detection. over rate.
- the preset transmittance is 100% transmittance.
- an embodiment of the present disclosure further provides a method for obtaining the light intensity distribution of a backlight panel.
- the method is applied to the processing unit in the display control device described in the first aspect. As shown in FIG. 6 , the method include the following steps:
- the method further includes the following steps: when each of the backlight blocks of the backlight panel is lit for the same grayscale, if there is a target pixel point whose light intensity is inconsistent with the light intensity of other pixel points, Then, weight distribution is performed for the backlight block corresponding to the target pixel and the light intensity distribution information corresponding to other backlight blocks around the backlight block, so that the light intensity of the target pixel is consistent with the light intensity of other pixels.
- the new light intensity distribution information of the backlight panel when each of the backlight blocks of the backlight panel is lit for the same grayscale, if there is a target pixel point whose light intensity is inconsistent with the light intensity of other pixel points.
- the light intensity distribution information corresponding to the backlight block is obtained, and the light intensity distribution information corresponding to the backlight block is used as each backlight block.
- the light intensity distribution information corresponding to a backlight block so as to obtain the light intensity distribution information of the entire backlight panel.
- the light intensity distribution information corresponding to the backlight block corresponding to the pixel and other backlight blocks around the backlight panel is weighted, so that the sum of the light intensity of the target pixel is consistent with the sum of the light intensity of other pixels.
- the light intensity distribution information of each backlight block on the backlight panel under the corresponding weight is obtained.
- the light intensity distribution information of the backlight panel determined in this way is beneficial to dynamically adjust the light intensity of each backlight block by partition. Specifically, when the light intensity of each backlight block is adjusted according to the light intensity distribution information of the backlight block, the light intensity distribution information of the backlight block is adjusted according to the content of the corresponding image area in the video image and the light diffusion effect of other backlight blocks.
- the adjusted light intensity distribution information of each backlight block adjusts the transmittance of the pixel region on the display corresponding to the backlight block, so that the problems existing in the related art can be overcome.
- obtaining the light intensity distribution information corresponding to the backlight block according to the image data corresponding to any of the backlight blocks including:
- the sub-light intensity distribution information in any quadrant is acquired, and the The light intensity distribution information is subjected to X-axis symmetrical copying and Y-axis symmetrical copying operations in sequence to obtain light intensity distribution information corresponding to the backlight block.
- the method further includes:
- the light intensity distribution information After obtaining the light intensity distribution information corresponding to the backlight block according to the image data corresponding to any one of the backlight blocks, the light intensity distribution information is converted according to the conversion parameter to obtain the corrected light intensity distribution information of the backlight block. Light intensity distribution information.
- the light intensity distribution information is two-dimensional array data, and each element in the two-dimensional array data represents the light intensity of each pixel in the pixel area corresponding to the backlight block on the display;
- the method also includes:
- the quantization processing includes floating point number fixed point processing, wherein the processing unit is performing quantization processing on the light intensity distribution information.
- the error caused by the quantization process to any pixel point is dispersed to the light intensity of the adjacent pixel points of the pixel point.
- Embodiments of the present disclosure also provide a computer-readable storage medium including program instructions, and when the program instructions are executed by a processor, the above-mentioned steps of obtaining the light intensity distribution of the backlight panel are implemented.
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Abstract
一种显示控制装置（100）及其获取背光板光强分布的方法，显示控制装置（100）包括一个或多个集成电路；其中，一个或多个集成电路包括：处理单元（101），用于根据从面阵亮度检测装置（200）检测到的数据确定显示器的背光板对应的光强分布信息，面阵亮度检测装置（200）位于显示器的屏幕前方，用于检测显示器在背光板的至少一个背光块点亮时的图像数据；显示器主控电路（102），用于接收图像视频信号，并根据图像视频信号确定显示器的初始透过率，以及背光板的初始光强；调整电路（103），用于根据光强分布信息对背光板的光强进行调整，并调整显示器的透过率，使得背光板调整后的光强和显示器调整后的透过率的乘积，与初始透过率和初始光强的乘积相等。
Description
本公开涉及背光显示器技术领域，具体地，涉及一种显示控制装置及其获取背光板光强分布的方法。
背光显示器通常包括背光板和液晶显示面板(LCD)。液晶显示面板由具有红、绿、蓝滤色器图案的滤色器基板和液晶层构成。背光板由发光二极管(LED)或荧光光源组成。液晶显示面板自身不具备发光性能。液晶显示面板通过背光板照射并选择性的过滤部分颜色，从而显示不同颜色的图像。
目前常用的背光板为边条式背光板或直下式背光板。相关技术中，通过点亮整个背光板上的LED灯以获取整个背光板的光强分布信息，基于背光板的光强分布信息对视频图像信号进行处理以在液晶显示面板上显示视频图像。由于背光板的光强分布信息是在点亮整个背光板上的LED灯的情况下获取的，因此背光板的背光亮度不能随显示内容的变化而动态调节，使得图像显示内容偏暗时，背光板的光强利用率不高，造成能量浪费。加之液晶显示面板的透过率无法调节为0％，导致液晶显示器显示视频图像时对比度较差。
发明内容
本公开的目的是提供一种显示控制装置及其获取背光板光强分布的方法，以解决相关技术中存在的问题。
为了实现上述目的，根据本公开实施例的第一部分，提供一种显示控制装置，包括一个或多个集成电路；
其中，所述一个或多个集成电路包括：
处理单元，用于根据面阵亮度检测装置检测到的数据确定显示器的背光板对应的光强分布信息，所述面阵亮度检测装置位于所述显示器的屏幕前方，用于检测所述显示器在所述背光板的至少一个背光块点亮时的图像数据；
显示器主控电路，用于接收图像视频信号，并根据所述图像视频信号确定所述显示器的初始透过率，以及所述背光板的初始光强；
调整电路，用于根据所述光强分布信息对所述背光板的光强进行调整，并调整所述显示器的透过率，使得所述背光板调整后的光强和所述显示器调整后的透过率的乘积，与所述初始透过率和所述初始光强的乘积相等。
根据本公开实施例的第二部分，提供一种获取背光板光强分布的方法，所述方法应用于上述第一部分所述的显示控制装置中的处理单元，所述方法包括：
根据所述面阵亮度检测装置检测到的任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息；
将该背光块对应的光强分布信息作为所述背光板的每一所述背光块对应的光强分布信息，以得到所述背光板的光强分布信息。
根据本公开实施例的第三部分，提供一种计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现上述第二部分中任一项所述方法的步骤。
采用上述技术方案，至少能够达到如下技术效果：
处理单元根据面阵亮度检测装置检测到的数据确定显示器的背光板对应的光强分布信息，其中面阵亮度检测装置位于显示器的屏幕前方，面阵亮度检测装置用于检测所述显示器在所述背光板的至少一个背光块点亮时的图像数据。显示器主控电路接收图像视频信号，并根据所述图像视频信号确定所述显示器的初始透过率，以及所述背光板的初始光强。调整电路根据所 述光强分布信息对所述背光板的光强进行调整，并调整所述显示器的透过率，使得所述背光板调整后的光强和所述显示器调整后的透过率的乘积，与所述初始透过率和所述初始光强的乘积相等，从而显示控制装置根据背光板调整后的光强和显示器调整后的透过率控制显示器显示主控电路接收到的图像视频。采用这种根据面阵亮度检测装置检测到的任意背光块点亮时的图像数据确定整个背光板的光强分布信息的方式，可以使得到的背光板的光强分布信息包括每一背光块的光强分布。如此有利于分别调整背光板的各背光块的光强，具体地，在调节每一背光块的光强时，结合视频图像中该背光块对应的图像区域的灰度信息以及其他背光块的光扩散影响调节该背光块的光强，进而根据调整后的每一背光块的光强调整该背光块对应显示器上的像素区域的透过率，如此可以克服相关技术中存在的问题。
本公开的其他特征和优点将在随后的具体实施方式部分予以详细说明。
附图是用来提供对本公开的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本公开，但并不构成对本公开的限制。在附图中：
图1是根据本公开一示例性实施例示出的一种显示控制装置的结构示意图。
图2是根据本公开一示例性实施例示出的另一种显示控制装置的结构示意图。
图3A是根据本公开一示例性实施例示出的一种背光块的示意图。
图3B是根据本公开一示例性实施例示出的一种背光块与显示器上的像素区域相对应的示意图。
图4是根据本公开一示例性实施例示出的一种背光块的光强分布图。
图5A是根据本公开一示例性实施例示出的一种预定图像。
图5B是根据本公开一示例性实施例示出的一种拍摄图像。
图6是根据本公开一示例性实施例示出的一种获取背光板光强分布的方法的流程图。
以下结合附图对本公开的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本公开，并不用于限制本公开。
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
背光显示器通常包括背光板和液晶显示面板。液晶显示面板由具有红、绿、蓝滤色器图案的滤色器基板和液晶层构成。背光板由发光二极管或荧光光源组成。液晶显示面板自身不具备发光性能。液晶显示面板通过背光板照射并选择性的过滤部分颜色，从而显示不同颜色的图像。
目前常用的背光板为边条式背光板或直下式背光板。相关技术中，通过点亮整个背光板上的LED灯以获取整个背光板的光强分布信息或者基于每一LED灯的性能参数拟合整个背光板的光强分布信息，基于背光板的光强分布信息对视频图像信号进行处理以在液晶显示面板上显示视频图像。由于背光板的光强分布信息是在点亮整个背光板上的LED灯的情况下获取的，因此背光板的背光亮度不能随显示内容的变化而动态调节，使得显示内容偏暗时，背光板的光强利用率不高，造成能量浪费。加之液晶显示面板的透过率无法调节为0％，导致液晶显示器显示视频图像时对比度较差。
有鉴于此，本公开实施例提供一种显示控制装置及其获取背光板光强分布的方法，以克服上述相关技术中存在的问题。
本公开以背光板上的光源为LED灯为例对上述技术方案进行说明。
图1是根据本公开一示例性实施例示出的一种显示控制装置的结构示意图，该显示控制装置100包括一个或多个集成电路；
其中，所述一个或多个集成电路包括：处理单元101，用于根据从面阵亮度检测装置200(参见图2)检测到的数据确定显示器的背光板对应的光强分布信息，所述面阵亮度检测装置位于所述显示器的屏幕前方，用于检测所述显示器在所述背光板的至少一个背光块点亮时的图像数据；显示器主控电路102，用于接收图像视频信号，并根据所述图像视频信号确定所述显示器的初始透过率，以及所述背光板的初始光强；调整电路103，用于根据所述光强分布信息对所述背光板的光强进行调整，并调整所述显示器的透过率，使得所述背光板调整后的光强和所述显示器调整后的透过率的乘积，与所述初始透过率和所述初始光强的乘积相等。
其中，面阵亮度检测装置200可以为LED光强分布测试仪、相机等。面阵亮度检测装置200与处理单元101相连。面阵亮度检测装置200位于显示器的屏幕前方，具体可以是显示器的正前方或者任意背光块对应的显示器区域的正前方。面阵亮度检测装置200用于检测显示器在背光板的至少一个背光块点亮时的图像数据，并将检测到的数据传输给处理单元101，处理单元101根据该数据确定显示器的背光板的光强分布信息。
一种可实现的实施方式，可以将背光板分成多个相同的背光块，示例地，如图3A所示，可以将背光板上相邻的四个LED灯作为一个背光块，如此可以将背光板上的LED灯阵均分成多个背光块。不难理解的是，还可以将背光板上相邻的其他数量的LED灯作为一个背光块。对于每一背光块具有多少个LED灯本公开不做具体限制。
一种实施方式中，可以针对每一背光块进行单独点亮控制。应当理解的是，在将背光板分成多个相同的背光块之后，各所有背光块的光强分布应当相同。因此，处理单元101根据面阵亮度检测装置200检测到的显示器在背光板的任意一个背光块点亮时的图像数据，可以确定整个背光板点亮时的光强分布信息。需说明的是，在对背光板的灯阵进行分块之后，背光板的每一背光块对应显示器的部分像素区域，即每一背光块分别对应显示器上的一个像素区域。示例地，如图3B所示，一个背光块对应显示器上的一个像素区域。
在显示器主控电路102接收到待显示的图像视频信号时，根据所述图像视频信号确定所述显示器的初始透过率，以及所述背光板的初始光强。详细地，显示器主控电路102根据图像视频信号确定显示器上每一像素点对应的初始透过率以及每一背光块的初始亮度。
进一步地，调整电路103根据背光板的光强分布信息对所述背光板的光强进行调整。一种可实现的实施方式，由于在显示器上显示视频图像的每一帧图像时，该显示器上的每一像素区域对应显示每一帧图像中的一个图像区域，因此可以根据背光板的光强分布信息中的每一背光块的光强分布信息以及每一背光块分别对应的视频图像中每一图像区域的目标灰度值，对该背光块的光强进行独立地调整。其中，目标灰度值是根据该图像区域内的每一像素点的灰度值确定的，具体可以是该图像区域内所有像素点的灰度值中的最大灰度值，也可以是该图像区域内每一像素点的灰度值的平均值或其他统计值。
进一步地，可以根据调整后的每一背光块的光强调整该背光块对应的显示器上的像素区域的透过率，使得所述背光板任意背光块调整后的光强和所述显示器上对应像素区域调整后的透过率的乘积，与该像素区域的所述初始透过率和背光板的所述初始光强的乘积相等。
采用这种显示控制装置100，其中处理单元101根据从面阵亮度检测装置200检测到的数据确定显示器的背光板对应的光强分布信息，其中所述面阵亮度检测装置200位于所述显示器的屏幕前方，用于检测所述显示器在所述背光板的至少一个背光块点亮时的图像数据。显示器主控电路102接收图像视频信号，并根据所述图像视频信号确定所述显示器的初始透过率，以及所述背光板的初始光强。调整电路103可以根据所述光强分布信息对所述背光板的光强进行调整，并调整所述显示器的透过率，使得所述背光板调整后的光强和所述显示器调整后的透过率的乘积，与所述初始透过率和所述初始光强的乘积相等，从而显示控制装置根据背光板调整后的光强和显示器调整后的透过率控制显示器显示主控电路接收到的图像视频。采用这种根据面阵亮度检测装置200检测到的任意背光块点亮时的图像数据确定整个背光板的光强分布信息的方式，可以使得到的背光板的光强分布信息包括每一背光块单独的光强分布。如此有利于分别调整背光板的各背光块的光强，具体地，在调节每一背光块的光强时结合视频图像中该背光块对应的图像区域的灰度信息以及其他背光块的光扩散影响调节该背光块的光强，进而根据调整后的每一背光块的光强调整该背光块对应显示器上的像素区域的透过率，如此可以克服相关技术中存在的问题。
应当说明的是，根据每一背光块对应的显示器上的像素区域内的待显示视频图像信息，可以确定并调整该背光块的光强。如此，可以实现根据同一帧视频图像中不同图像区域的内容而分别调整各图像区域对应的背光板上各背光块的光强的目的。同理地，根据显示器上的待显示视频图像的每一帧图像，可以确定并调整整个背光板的光强，如此，可以实现根据不同帧的图像而动态的调整每一帧图像对应的背光板的光强的目的。这种方式提高了背光板的光强利用率，减少了能量浪费。
还需说明的是，上述根据面阵亮度检测装置200检测到的任一背光块单 独点亮时的图像数据确定整个背光板的光强分布信息的方式，有利于对背光板进行以背光块为单位的动态分区，例如，可以根据需求将相邻的一个或多个背光块作为一个背光区。因此，这种方式便于根据不同的需求，将背光板的LED灯阵划分为不同的背光区。
可选地，所述背光板是各个背光块经过灯珠亮度一致性校正后的背光板，所述处理单元101具体用于：根据任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息；将该背光块对应的光强分布信息作为所述背光板的每一所述背光块对应的光强分布信息，以得到所述背光板的光强分布信息；在所述背光板的每一所述背光块针对同一灰度进行点亮时，若存在光强与其他像素点的光强不一致的目标像素点，则针对该目标像素点对应的背光块以及该背光块周围的其他背光块对应的所述光强分布信息进行权重分配，使得所述目标像素点的光强与其他像素点的光强一致，得到所述背光板的新的光强分布信息。
其中，背光板包括多个背光块，背光板上各个背光块经过灯珠亮度一致性校正后，使得每一灯珠在相同灰度下具有相同的光强/亮度，进而每一背光块应当具有相同的光强分布。
具体地，处理单元101通过执行以下步骤以确定背光板的光强分布信息：
首先，根据面阵亮度检测装置200检测到的任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息。以图3A所示的背光块为例，得到该背光块对应的光强分布如图4所示。
接着，将该背光块对应的光强分布信息作为所述背光板的每一所述背光块对应的光强分布信息，从而可以计算得到该背光板的光强分布信息。
一种可能的情况，在将任一背光块对应的光强分布信息作为背光板的每一背光块对应的光强分布信息的情况下，得到的背光板的光强分布可能与该背光板的实际光强分布存在差异。因此，为了解决这一差异性问题，在将任 一背光块对应的光强分布信息作为背光板的每一背光块对应的光强分布信息之后，处理单元101还可以执行以下步骤：在控制背光板上的每一背光块针对同一灰度进行点亮时，判断显示器上是否存在光强与其他像素点的光强不一致的目标像素点，若存在，则针对该目标像素点对应的背光块以及该背光块周围的其他背光块对应的光强分布信息进行权重分配，使得目标像素点的光强与其他像素点的光强一致，从而得到权重分配处理后的背光板的光强分布信息。
其中，权重分配的具体实施方式与相关技术中的权重分配策略相类似，此处不再详述。
采用这种方式，根据任意一个背光块的光强分布信息，在考虑光扩散的情况下，计算得到整个背光板的光强分布信息之后。根据背光板上的每一背光块均针对同一灰度进行点亮时的实际光强数据，对计算得到的背光板光强分布进行权重分配，得到权重分配处理后的背光板的光强分布信息。根据权重分配处理后的背光板的光强分布信息，能够保证在相同灰度下显示器上各像素点的光强一致，从而可以提高显示器上视频图像的均匀性和精度。
可选地，所述处理单元101根据任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息，具体可以包括以下步骤：
根据任一所述背光块对应的所述图像数据，获取在以该背光块的中心为原点的二维坐标轴的四个象限中，任一象限内的子光强分布信息，并将该子光强分布信息依次进行X轴对称复制，以及Y轴对称复制操作，得到该背光块对应的光强分布信息。
不难理解的是，当背光块中所包括的LED灯阵为对称阵列时，例如图3A所示的背光块，该背光块的光强分布如图4所示呈现的对称分布。因此，一种可实现的实施方式，根据任一背光块对应的图像数据，获取在以该背光块的中心为原点的坐标轴的四个象限中，任一象限内的子光强分布信息，并 将该子光强分布信息依次进行X轴对称复制，以及Y轴对称复制操作，得到该背光块对应的完整的光强分布信息。或者，另一种可实现的实施方式，根据任一背光块对应的图像数据，获取在以该背光块的中心为原点的坐标轴的四个象限中，任一象限内的子光强分布信息，并将该子光强分布信息依次进行Y轴对称复制，以及X轴对称复制操作，得到该背光块对应的完整的光强分布信息。采用这种方式，可以使得获取到的背光块的光强分布更加对称均匀。
可选地，所述显示器主控电路102还用于，控制所述显示器显示预定图像；所述处理单元101还用于：获取所述面阵亮度检测装置200针对所述预定图像进行拍摄得到的拍摄图像；通过图像变换算法，确定将所述拍摄图像转换到所述预定图像的转换参数；所述处理单元101还用于，在根据任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息后，根据所述转换参数对所述光强分布信息进行转换，得到修正后的该背光块的光强分布信息。
其中，图像变化算法可以是畸变校正算法，也可以是图像缩放算法。对此本公开不做具体限制。
一种可能的情况，由于面阵亮度检测装置200与显示器之间的放置位置存在误差，因此，面阵亮度检测装置200针对显示器所拍摄到的图像数据可能存在形状畸变。为了避免这种情况导致计算得到的背光板光强分布信息存在误差，可以对面阵亮度检测装置200检测到的图像数据进行校正。
具体地，通过显示器主控电路102控制显示器显示预定图像，示例地，如图5A所示的预定图像。接着，处理单元101获取面阵亮度检测装置200针对该预定图像进行拍摄得到的拍摄图像，示例地如5B所示的拍摄图像；通过畸变校正算法和/或缩放算法，确定能够将该拍摄图像转换为该预定图 像的转换参数。示例地，转换参数可以表示为：
再接着，所述处理单元101在根据任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息后，根据所述转换参数对所述光强分布信息进行转换，得到修正后的该背光块的光强分布信息。具体地，根据所述转换参数对所述光强分布信息进行转换，得到修正后的该背光块的光强分布信息的计算过程可以表征为：
采用这种方式，可以根据转换参数，对面阵亮度检测装置200获取到的光强分布信息进行转换，以得到校正后的背光块的光强分布信息，进而使得根据修正后的背光块的光强分布信息确定的背光板的光强分布信息更加准确。
可选地，所述光强分布信息为二维阵列数据，所述二维阵列数据中的每一元素表征所述显示器上对应所述背光块的像素区域内每一像素点的光强；所述处理单元101还用于：
获取到任一所述背光块对应的光强分布信息后，对所述光强分布信息进行量化处理，其中所述量化处理包括浮点数定点化处理，其中，所述处理单 元在对所述光强分布信息进行量化处理的过程中，将量化处理过程对任一像素点造成的误差分散到该像素点的邻近像素点的光强上。
本领域普通技术人员应当理解的是，通过面阵亮度检测装置200获取到的光强分布信息(光强值的单位为坎德拉，英文为candela，简称cd)是浮点数类型的数据。因此，为了便于计算，会对背光块的光强分布信息进行浮点数定点化处理。而不难理解的是，对背光块的光强分布信息进行浮点数定点化处理的过程中，会导致换算误差。因此，为避免量化处理的过程中的计算误差，可以将量化处理过程对任一像素点造成的误差分散到该像素点的邻近像素点的光强上。
采用这种方式，通过误差扩散方法将量化过程中带入的误差分散到邻近的像素位置上，可以减小计算得到的光场分布信息与实际光场分布信息之间的误差。
可选地，所述显示器主控电路102还用于，在所述面阵亮度检测装置200开始检测之前，将所述显示器上的所有像素点的红绿蓝透过率均配置成预设透过率。
一种可实现的实施方式，预设透过率为100％透过率。
基于同一发明构思，本公开实施例还提供一种获取背光板光强分布的方法，所述方法应用于第一方面所述的显示控制装置中的处理单元，如图6所示，所述方法包括以下步骤：
S61、根据所述面阵亮度检测装置检测到的任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息；
S62、将该背光块对应的光强分布信息作为所述背光板的每一所述背光块对应的光强分布信息，以得到所述背光板的光强分布信息；
可选地，所述方法还包括以下步骤：在所述背光板的每一所述背光块针对同一灰度进行点亮时，若存在光强与其他像素点的光强不一致的目标像素 点，则针对该目标像素点对应的背光块以及该背光块周围的其他背光块对应的所述光强分布信息进行权重分配，使得所述目标像素点的光强与其他像素点的光强一致，得到所述背光板的新的光强分布信息。
采用这种方法，根据面阵亮度检测装置检测到的任一背光块对应的图像数据，获取该背光块对应的光强分布信息，并将该背光块对应的光强分布信息作为背光板的每一背光块对应的光强分布信息，从而得到整个背光板的光强分布信息。针对显示器的每一像素点，计算该像素点在每一背光块的光强辐射下的光强总和，若存在光强总和与其他像素点的光强总和不一致的目标像素点，则针对该目标像素点对应的背光块以及该背光板周围的其他背光块对应的光强分布信息进行权重分配，使得目标像素点的光强总和与其他像素点的光强总和一致。如此，得到背光板上每一背光块在对应权重下的光强分布信息。采用这种方式确定的背光板的光强分布信息，有利于分区动态调整每一背光块的光强。具体在根据每一背光块的光强分布信息调整该背光块的光强时，结合视频图像中对应图像区域的内容以及其他背光块的光扩散影响调节该背光块的光强分布信息，进而根据调整后的每一背光块的光强分布信息调整该背光块对应显示器上的像素区域的透过率，如此可以克服相关技术中存在的问题。
可选地，所述根据任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息，包括：
根据任一所述背光块对应的所述图像数据，获取在以该背光块的中心为原点的二维坐标轴的四个象限中，任一象限内的子光强分布信息，并将该子光强分布信息依次进行X轴对称复制，以及Y轴对称复制操作，得到该背光块对应的光强分布信息。
可选地，所述方法还包括：
获取所述面阵亮度检测装置针对所述显示器显示的预定图像进行拍摄 得到的拍摄图像；
通过图像变换算法，确定将所述拍摄图像转换到所述预定图像的转换参数；
在根据任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息后，根据所述转换参数对所述光强分布信息进行转换，得到修正后的该背光块的光强分布信息。
可选地，所述光强分布信息为二维阵列数据，所述二维阵列数据中的每一元素表征所述显示器上对应所述背光块的像素区域内每一像素点的光强；
所述方法还包括：
获取到任一所述背光块对应的光强分布信息后，对所述光强分布信息进行量化处理，其中所述量化处理包括浮点数定点化处理，其中，所述处理单元在对所述光强分布信息进行量化处理的过程中，将量化处理过程对任一像素点造成的误差分散到该像素点的邻近像素点的光强上。
关于上述实施例中的方法，其中各个步骤的具体实施方式已经在有关该方法的显示控制装置的实施例中进行了详细描述，此处将不做详细阐述说明。
本公开实施例还提供了一种包括程序指令的计算机可读存储介质，该程序指令被处理器执行时实现上述的获取背光板光强分布的步骤。
以上结合附图详细描述了本公开的优选实施方式，但是，本公开并不限于上述实施方式中的具体细节，在本公开的技术构思范围内，可以对本公开的技术方案进行多种简单变型，这些简单变型均属于本公开的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合。为了避免不必要的重复，本公开对各种可能的组合方式不再另行说明。
此外，本公开的各种不同的实施方式之间也可以进行任意组合，只要其不违背本公开的思想，其同样应当视为本公开所公开的内容。
Claims (13)
- 一种显示控制装置，其特征在于，包括一个或多个集成电路；其中，所述一个或多个集成电路包括：处理单元，用于根据面阵亮度检测装置检测到的数据确定显示器的背光板对应的光强分布信息，所述面阵亮度检测装置位于所述显示器的屏幕前方，用于检测所述显示器在所述背光板的至少一个背光块点亮时的图像数据；显示器主控电路，用于接收图像视频信号，并根据所述图像视频信号确定所述显示器的初始透过率，以及所述背光板的初始光强；调整电路，用于根据所述光强分布信息对所述背光板的光强进行调整，并调整所述显示器的透过率，使得所述背光板调整后的光强和所述显示器调整后的透过率的乘积，与所述初始透过率和所述初始光强的乘积相等。
- 根据权利要求1所述的显示控制装置，其特征在于，所述背光板是各个背光块经过灯珠亮度一致性校正后的背光板，所述处理单元具体用于：根据任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息；将该背光块对应的光强分布信息作为所述背光板的每一所述背光块对应的光强分布信息，以得到所述背光板的光强分布信息。
- 根据权利要求2所述的显示控制装置，其特征在于，所述处理单元还用于：在所述背光板的每一所述背光块针对同一灰度进行点亮时，若存在光强与其他像素点的光强不一致的目标像素点，则针对该目标像素点对应的背光块以及该背光块周围的其他背光块对应的所述光强分布信息进行权重分配，使得所述目标像素点的光强与其他像素点的光强一致，得到所述背光板的新 的光强分布信息。
- 根据权利要求2所述的显示控制装置，其特征在于，所述处理单元根据任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息，包括：根据任一所述背光块对应的所述图像数据，获取在以该背光块的中心为原点的二维坐标轴的四个象限中，任一象限内的子光强分布信息，并将该子光强分布信息依次进行X轴对称复制，以及Y轴对称复制操作，得到该背光块对应的光强分布信息。
- 根据权利要求1-4中任一项所述的显示控制装置，其特征在于，所述显示器主控电路还用于，控制所述显示器显示预定图像；所述处理单元还用于：获取所述面阵亮度检测装置针对所述预定图像进行拍摄得到的拍摄图像；通过图像变换算法，确定将所述拍摄图像转换到所述预定图像的转换参数；所述处理单元还用于，在根据任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息后，根据所述转换参数对所述光强分布信息进行转换，得到修正后的该背光块的光强分布信息。
- 根据权利要求1-4中任一项所述的显示控制装置，其特征在于，所述光强分布信息为二维阵列数据，所述二维阵列数据中的每一元素表征所述显示器上对应所述背光块的像素区域内每一像素点的光强；所述处理单元还用于：获取到任一所述背光块对应的光强分布信息后，对所述光强分布信息进 行量化处理，其中所述量化处理包括浮点数定点化处理，其中，所述处理单元在对所述光强分布信息进行量化处理的过程中，将量化处理过程对任一像素点造成的误差分散到该像素点的邻近像素点的光强上。
- 根据权利要求1-4中任一项所述的显示控制装置，其特征在于，所述显示器主控电路还用于，在所述面阵亮度检测装置开始检测之前，将所述显示器上的所有像素点的红绿蓝透过率均配置成预设透过率。
- 一种获取背光板光强分布的方法，其特征在于，所述方法应用于权利要求1所述的显示控制装置中的处理单元，所述方法包括：根据所述面阵亮度检测装置检测到的任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息；将该背光块对应的光强分布信息作为所述背光板的每一所述背光块对应的光强分布信息，以得到所述背光板的光强分布信息。
- 根据权利要求8所述的方法，其特征在于，在所述将该背光块对应的光强分布信息作为所述背光板的每一所述背光块对应的光强分布信息，以得到所述背光板的光强分布信息之后，包括：在所述背光板的每一所述背光块针对同一灰度进行点亮时，若存在光强与其他像素点的光强不一致的目标像素点，则针对该目标像素点对应的背光块以及该背光块周围的其他背光块对应的所述光强分布信息进行权重分配，使得所述目标像素点的光强与其他像素点的光强一致，得到所述背光板的新的光强分布信息。
- 根据权利要求8所述的方法，其特征在于，所述根据任一所述背光 块对应的所述图像数据，获取该背光块对应的光强分布信息，包括：根据任一所述背光块对应的所述图像数据，获取在以该背光块的中心为原点的二维坐标轴的四个象限中，任一象限内的子光强分布信息，并将该子光强分布信息依次进行X轴对称复制，以及Y轴对称复制操作，得到该背光块对应的光强分布信息。
- 根据权利要求8-10中任一项所述的方法，其特征在于，还包括：获取所述面阵亮度检测装置针对所述显示器显示的预定图像进行拍摄得到的拍摄图像；通过图像变换算法，确定将所述拍摄图像转换到所述预定图像的转换参数；在根据任一所述背光块对应的所述图像数据，获取该背光块对应的光强分布信息后，根据所述转换参数对所述光强分布信息进行转换，得到修正后的该背光块的光强分布信息。
- 根据权利要求8-10中任一项所述的方法，其特征在于，所述光强分布信息为二维阵列数据，所述二维阵列数据中的每一元素表征所述显示器上对应所述背光块的像素区域内每一像素点的光强；所述方法还包括：获取到任一所述背光块对应的光强分布信息后，对所述光强分布信息进行量化处理，其中所述量化处理包括浮点数定点化处理，其中，所述处理单元在对所述光强分布信息进行量化处理的过程中，将量化处理过程对任一像素点造成的误差分散到该像素点的邻近像素点的光强上。
- 一种计算机可读存储介质，其上存储有计算机程序，其特征在于， 该程序被处理器执行时实现权利要求8-12中任一项所述方法的步骤。
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840668A (zh) * | 2007-06-26 | 2010-09-22 | 苹果公司 | 用于调整视频图像的方法、设备和系统 |
| CN102243852A (zh) * | 2011-07-04 | 2011-11-16 | 深圳市华星光电技术有限公司 | 液晶显示器及其驱动方法和装置 |
| CN103796380A (zh) * | 2013-12-25 | 2014-05-14 | 深圳市华星光电技术有限公司 | 液晶显示装置及其背光源和调光方法 |
| CN105158917A (zh) * | 2015-10-27 | 2015-12-16 | 北京国承万通信息科技有限公司 | 显示器及其透射率/反射率确定方法和装置 |
| US20170047046A1 (en) * | 2014-04-25 | 2017-02-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Adjusting brightness of a display |
| CN111091788A (zh) * | 2018-10-24 | 2020-05-01 | 三星电子株式会社 | 显示设备及其驱动方法 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201340719Y (zh) * | 2008-12-22 | 2009-11-04 | 北京巨数数字技术开发有限公司 | 液晶显示调整装置和液晶显示装置 |
| KR101351414B1 (ko) * | 2009-12-14 | 2014-01-23 | 엘지디스플레이 주식회사 | 액정 표시 장치의 로컬 디밍 구동 방법 및 장치 |
| CN102129839A (zh) * | 2010-01-15 | 2011-07-20 | 光远科技股份有限公司 | 具有边射形光导组合式背光板的显示器及其匀化方法 |
| CN101777311B (zh) * | 2010-03-05 | 2013-05-01 | 青岛海信电器股份有限公司 | 一种动态背光亮度控制方法 |
| CN101826282B (zh) * | 2010-04-16 | 2014-12-03 | 深圳市中庆微科技开发有限公司 | 一种液晶显示装置和数字图像信号的处理方法 |
| EP2811481B1 (en) * | 2012-02-03 | 2017-07-12 | Panasonic Intellectual Property Management Co., Ltd. | Video display control device |
| JP2014021451A (ja) * | 2012-07-23 | 2014-02-03 | Sharp Corp | 液晶表示装置の輝度制御方法 |
| CN103810980B (zh) * | 2014-01-23 | 2016-01-06 | 华南理工大学 | 一种基于图像出现频率的液晶显示器功耗降低方法 |
| US20180211607A1 (en) * | 2017-01-24 | 2018-07-26 | Séura, Inc. | System for automatically adjusting picture settings of an outdoor television in response to changes in ambient conditions |
| CN108877701B (zh) * | 2017-05-08 | 2020-02-07 | 北京小米移动软件有限公司 | 一种显示图像的方法和装置 |
| CN207966469U (zh) * | 2018-01-17 | 2018-10-12 | 上海坦继显示技术有限公司 | 一种微光显示器 |
| CN108445578A (zh) * | 2018-04-02 | 2018-08-24 | 京东方科技集团股份有限公司 | 一种侧入式背光模组、显示模组以及背光调节方法 |
| CN109960082B (zh) * | 2019-05-05 | 2022-06-07 | 京东方科技集团股份有限公司 | 场序显示模组、显示装置及场序显示控制方法 |
-
2020
- 2020-07-07 WO PCT/CN2020/100709 patent/WO2022006755A1/zh active Application Filing
- 2020-07-07 CN CN202080003281.XA patent/CN112543967B/zh active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101840668A (zh) * | 2007-06-26 | 2010-09-22 | 苹果公司 | 用于调整视频图像的方法、设备和系统 |
| CN102243852A (zh) * | 2011-07-04 | 2011-11-16 | 深圳市华星光电技术有限公司 | 液晶显示器及其驱动方法和装置 |
| CN103796380A (zh) * | 2013-12-25 | 2014-05-14 | 深圳市华星光电技术有限公司 | 液晶显示装置及其背光源和调光方法 |
| US20170047046A1 (en) * | 2014-04-25 | 2017-02-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Adjusting brightness of a display |
| CN105158917A (zh) * | 2015-10-27 | 2015-12-16 | 北京国承万通信息科技有限公司 | 显示器及其透射率/反射率确定方法和装置 |
| CN111091788A (zh) * | 2018-10-24 | 2020-05-01 | 三星电子株式会社 | 显示设备及其驱动方法 |
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