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    • 1. 发明申请
    • IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD
    • 图像显示装置和图像显示方法
    • US20100225574A1
    • 2010-09-09
    • US12681756
    • 2008-10-09
    • Kohji FujiwaraKatsuya OtoiKatsuteru Hashimoto
    • Kohji FujiwaraKatsuya OtoiKatsuteru Hashimoto
    • G09G3/36
    • G09G3/3426G09G3/3648G09G2320/0238G09G2320/0247G09G2320/0261G09G2320/041G09G2320/0646G09G2330/021G09G2360/144G09G2360/16
    • An objective of the present invention is to provide an image display device that performs area active drive and that can suppress the occurrence of flicker upon displaying a moving image. An APL calculating unit (16) obtains, based on an input image (31), an average luminance level of the image for one frame. A luminance range determining unit (151) determines an upper limit value and a lower limit value of luminances of LEDs, based on the average luminance level. An area active drive processing unit (15) obtains, based on the input image (31), liquid crystal data (32) used to drive a liquid crystal panel (11) and LED data (33) used to drive a backlight (13). When the LED data (33) is obtained, the input image (31) is divided into a plurality of areas and a luminance of LEDs corresponding to each area is obtained within a range between the upper limit value and the lower limit value which are determined by the luminance range determining unit (151).
    • 本发明的目的是提供一种执行区域主动驱动并且可以在显示运动图像时抑制闪烁的发生的图像显示装置。 APL计算单元(16)基于输入图像(31)获得一帧的图像的平均亮度水平。 亮度范围确定单元(151)基于平均亮度水平确定LED的亮度的上限值和下限值。 区域有源驱动处理单元(15)基于输入图像(31)获得用于驱动液晶面板(11)的液晶数据(32)和用于驱动背光(13)的LED数据(33) 。 当获得LED数据(33)时,输入图像(31)被划分为多个区域,并且在确定的上限值和下限值之间的范围内获得与每个区域对应的LED的亮度 由亮度范围确定单元(151)。
    • 2. 发明授权
    • Image display device and image display method
    • 图像显示装置和图像显示方法
    • US08681087B2
    • 2014-03-25
    • US13384877
    • 2010-03-26
    • Katsuya OtoiKohji FujiwaraKatsuteru Hashimoto
    • Katsuya OtoiKohji FujiwaraKatsuteru Hashimoto
    • G09G3/36
    • G09G3/3426G09G2320/0247G09G2320/0261G09G2320/0646G09G2330/021G09G2360/14G09G2360/16H04N5/21H04N5/57H04N5/66H04N7/0132H04N21/4318
    • An image display device which performs area-active drive suppresses occurrence of flickering that is caused when displaying dynamic images due to the emission luminance of each area being determined on the basis of a maximum or mean value of pixel luminances within that area.An emission luminance calculation section (151) divides an input image (31) into a plurality of areas, and obtains luminances upon emission of LEDs (first emission luminances) (32) in the areas. A maximum luminance position eccentricity coefficient calculation section (152) obtains maximum luminance position eccentricity coefficients (33) indicating maximum luminance positions in the areas. An emission luminance correction section (153) corrects the first emission luminances (32) on the basis of the maximum luminance position eccentricity coefficients (33) and contribution ratios (34) stored in an LED filter (156). At this time, luminances of areas positioned in the same direction as the maximum luminance positions are set to be relatively high, and luminances of areas positioned in the opposite direction to the maximum luminance positions are set to be relatively low.
    • 执行区域激活驱动的图像显示装置抑制由于基于该区域内的像素亮度的最大值或平均值确定的每个区域的发光亮度而显示动态图像而引起的闪烁的发生。 发光亮度计算部(151)将输入图像(31)分割为多个区域,并且在该区域中发出LED(第一发光亮度)(32)时获得亮度。 最大亮度位置偏心率计算部(152)获得表示该区域的最大亮度位置的最大亮度位置偏心系数(33)。 发光亮度校正部(153)根据存储在LED滤光器(156)中的最大亮度位置偏心系数(33)和贡献率(34)来校正第一发光亮度(32)。 此时,与最大亮度位置相同方向的区域的亮度被设定为相对较高,并且与最大亮度位置相反方向的区域的亮度设定得相对较低。
    • 5. 发明申请
    • IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD
    • 图像显示装置和图像显示方法
    • US20120147067A1
    • 2012-06-14
    • US13391827
    • 2010-05-07
    • Katsuteru HashimotoSeiichi GohshiKatsuya OtoiKohji Fujiwara
    • Katsuteru HashimotoSeiichi GohshiKatsuya OtoiKohji Fujiwara
    • G09G3/36G09G5/10
    • G09G3/3413G09G3/3426G09G3/3611G09G2320/0646G09G2330/021G09G2360/16
    • In an image display device of at least one embodiment, a regional maximum detection section detects an areal maximum pixel luminance (regional maximum) on the basis of an input image. A regional mean calculation section calculates an areal mean pixel luminance (regional mean) on the basis of the input image. A data comparison section compares a control determination threshold retained in a control determination threshold storage section with the regional maximum for each area, and outputs a comparison result for that area. An LED output value calculation section sets a value corresponding to the regional maximum as an LED output value for each area with the regional maximum greater than the control determination threshold, and sets a value corresponding to the regional mean as an LED output value for each area with the regional maximum less than or equal to the control determination threshold.
    • 在至少一个实施例的图像显示装置中,区域最大检测部分基于输入图像检测面积最大像素亮度(区域最大值)。 区域平均值计算部分基于输入图像计算面积平均像素亮度(区域均值)。 数据比较部分将控制确定阈值存储部分中保留的控制确定阈值与每个区域的区域最大值进行比较,并输出该区域的比较结果。 LED输出值计算部分将区域最大值对应的值设置为具有大于控制确定阈值的区域最大值的每个区域的LED输出值,并且将与区域均值相对应的值设置为每个区域的LED输出值 区域最大值小于或等于控制确定阈值。
    • 8. 发明申请
    • IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD
    • 图像显示装置和图像显示方法
    • US20120154459A1
    • 2012-06-21
    • US13393940
    • 2010-05-18
    • Katsuya OtoiKohji FujiwaraKatsuteru Hashimoto
    • Katsuya OtoiKohji FujiwaraKatsuteru Hashimoto
    • G09G3/36G09G5/10
    • G09G3/3426G09G3/3413G09G2320/0233G09G2320/0238G09G2320/0242G09G2320/0646G09G2330/021G09G2340/0414G09G2340/0421G09G2360/16
    • In an image display device which performs area-active drive, backlight sources are emitted with appropriate luminances while inhibiting increase in power consumption and inhibiting reduction of image quality. An emission luminance calculation section divides an input image into a plurality of areas, and obtains luminances upon emission (first emission luminances) of LEDs in the areas. A plurality of correction modes are prepared as methods for correcting the first emission luminances, and a correction mode that is applied to an emission luminance correction process (selected correction mode) is stored to a correction mode storage section. For any LED units whose flag data stored in a correction-enabled map has the value of 1, an emission luminance correction section corrects their first emission luminances to obtain second emission luminances in accordance with the selected correction mode, with reference to correction value data stored in correction value tables.
    • 在执行区域驱动驱动的图像显示装置中,以适当的亮度发射背光源,同时抑制功率消耗的增加并且抑制图像质量的降低。 发光亮度计算部将输入图像分割为多个区域,并且获得区域中的LED的发光亮度(第一发光亮度)。 准备多个校正模式作为用于校正第一发光亮度的方法,将应用于发光亮度校正处理(选择的校正模式)的校正模式存储到校正模式存储部。 对于存储在校正功能映射中的标志数据的值为1的任何LED单元,发光亮度校正部分根据所选择的校正模式来校正其第一发光亮度以获得第二发光亮度,参考所存储的校正值数据 在校正值表中。