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    • 2. 发明授权
    • Chromaticity correction device, chromaticity correction method, and display device
    • 色度校正装置,色度校正方法和显示装置
    • US08850714B2
    • 2014-10-07
    • US14347607
    • 2011-09-30
    • Katsuyuki Matsui
    • Katsuyuki Matsui
    • H04N17/00H04N17/02H04N9/30H04N17/04
    • H04N17/045G09G3/3406G09G3/3607G09G5/02G09G2320/0242G09G2320/041G09G2320/0666G09G2360/145G09G2360/16H04N9/30
    • A chromaticity correction device corrects chromaticity of a video signal displayed on a display panel of a display device to correspond to a change in a luminance value of the display panel. The chromaticity correction device includes a luminance detection unit which detects the luminance value, a backlight driving level detection unit which detects a backlight driving level, a temperature detection unit which detects an internal device temperature or an ambient temperature, a reference luminance value calculation unit which estimates a reference luminance value in a characteristic of an initial state, a chromaticity calculation unit which obtains a chromaticity change amount of white point chromaticity and estimated white point chromaticity that is an estimated value of current white point chromaticity, a chromaticity correction value calculation unit which obtains a chromaticity correction value and a chromaticity correction circuit which corrects the chromaticity of the video signal.
    • 色度校正装置校正显示在显示装置的显示面板上的视频信号的色度,以对应于显示面板的亮度值的变化。 色度校正装置包括检测亮度值的亮度检测单元,检测背光驱动电平的背光驱动电平检测单元,检测内部装置温度或环境温度的温度检测单元,基准亮度值运算单元, 估计初始状态的特征中的参考亮度值,获得作为当前白点色度的估计值的白点色度的色度变化量和估计白点色度的色度计算单元,色度校正值计算单元, 获得校正视频信号的色度的色度校正值和色度校正电路。
    • 3. 发明授权
    • Correction device for display device and correction method for display device
    • 用于显示装置的校正装置和显示装置的校正方法
    • US09202435B2
    • 2015-12-01
    • US13990019
    • 2010-11-30
    • Ryuuichi FujimuraKatsuyuki Matsui
    • Ryuuichi FujimuraKatsuyuki Matsui
    • G09G5/06G09G5/02H04N9/31
    • G09G5/06G09G5/02G09G2320/0693G09G2360/145H04N9/3182
    • A correction device for a display device includes a detection unit which detects the measured XYZ values of a CIE1931 color system; a first conversion unit which calculates the measured X10Y10Z10 values of a CIE1964 color system based on the measured XYZ values with reference to the characteristics of the display device; a second conversion unit which calculates the target X10Y10Z10 values of the CIE1964 color system based on the target XYZ values representing tristimulus values of a target color in the CIE1931 color system; a correction value calculation unit which compares the measured X10Y10Z10 values with the target X10Y10Z10 values so as to produce a correction value which allows those values to match each other; a correction value calibration unit which rewrites the correction value with a correction value of the CIE1931 color system; and a compensation unit which performs color correction on the display device.
    • 用于显示装置的校正装置包括检测单元,其检测CIE1931颜色系统的测量XYZ值; 第一转换单元,参考显示装置的特性,基于测量的XYZ值计算CIE1964颜色系统的测量的X10Y10Z10值; 第二转换单元,其基于表示CIE1931颜色系统中的目标颜色的三刺激值的目标XYZ值来计算CIE1964颜色系统的目标X10Y10Z10值; 校正值计算单元,其将测量的X10Y10Z10值与目标X10Y10Z10值进行比较,以产生允许这些值相互匹配的校正值; 校正值校准单元,其用CIE1931颜色系统的校正值重写校正值; 以及在显示装置上执行色彩校正的补偿单元。
    • 5. 发明申请
    • DETERIORATION-DETECTING CIRCUIT, DISPLAY DEVICE, AND PERFORMANCE DETERIORATION-DETECTING METHOD
    • 检测电路,显示装置和性能检测方法
    • US20140240377A1
    • 2014-08-28
    • US14347610
    • 2011-09-29
    • Katsuyuki Matsui
    • Katsuyuki Matsui
    • G09G3/34G09G3/00G09G3/36
    • G09G3/3406G09G3/006G09G3/3413G09G3/36G09G2320/0233G09G2320/0666G09G2320/0693G09G2330/12G09G2360/145G09G2360/16G09G2380/08
    • A reference luminescence amount-acquiring unit of a display device obtains reference brightness corresponding to a BL drive value detected by a drive value-detecting unit and a temperature detected by a temperature-detecting unit. A deterioration-detecting unit calculates an initial status value based on a ratio of reference brightness obtained based on a temperature and a BL drive value in an initial status and brightness in the initial status detected by a luminescence amount-detecting unit, and stores the initial status value. The deterioration-detecting unit further calculates a current status value based on a ratio of reference brightness obtained based on a current temperature and a current BL drive value and current brightness detected by the luminescence amount-detecting unit, compares the initial status value with the current status value, and determines whether calibration is required. When calibration is determined to be required, a warning screen display unit causes performance deterioration to be displayed on a display unit.
    • 显示装置的参考发光量获取单元获得与由驱动值检测单元检测的BL驱动值相对应的参考亮度和由温度检测单元检测的温度。 劣化检测单元根据由发光量检测单元检测到的初始状态和初始状态下的亮度和基于温度和BL驱动值获得的基准亮度的比率来计算初始状态值,并存储初始状态值 状态值。 劣化检测单元还根据基于当前温度和由发光量检测单元检测的当前BL驱动值和当前亮度获得的参考亮度的比率来计算当前状态值,将初始状态值与电流 状态值,并确定是否需要校准。 当确定需要校准时,警告画面显示单元使显示单元显示性能下降。
    • 6. 发明申请
    • DISPLAY DEVICE AND DISPLAY METHOD
    • 显示装置和显示方法
    • US20140071187A1
    • 2014-03-13
    • US14116118
    • 2011-05-31
    • Katsuyuki Matsui
    • Katsuyuki Matsui
    • G09G3/34G09G3/36
    • G09G3/3406G09G3/20G09G3/34G09G3/3413G09G3/3426G09G3/36G09G3/3648G09G2320/0242G09G2320/043G09G2320/0666G09G2320/0686G09G2330/021
    • A display device includes a calculation unit which calculates a required luminance according to a set luminance for each color of a backlight, for each of a first video signal and a second video signal, and obtains the higher of the required luminance corresponding to the first video signal and the required luminance corresponding to the second video signal as an objective luminance for each color based on a calculation result, a backlight driving unit which drives the backlight for each color according to the obtained objective luminance of each color, a detection unit which compares the required luminance with the objective luminance and detects, for each color, the required luminance corresponding to the video signal lower than the objective luminance, and a brightness adjustment unit which performs adjustment for each color so that an image corresponding to the video signal lower than the objective luminance is darkened.
    • 显示装置包括计算单元,对于第一视频信号和第二视频信号中的每一个,根据背光源的每种颜色的设定亮度计算所需亮度,并且获得与第一视频相对应的所需亮度中的较高者 信号和与第二视频信号相对应的所需亮度作为每种颜色的目标亮度,根据计算结果,根据获得的每种颜色的目标亮度驱动每种颜色的背光的背光驱动单元,比较 对于每个颜色,检测与低于目标亮度的视频信号相对应的所需亮度;以及亮度调节单元,其对每种颜色进行调整,使得对应于视频信号的图像低于 客观亮度变暗。
    • 10. 发明申请
    • CHROMATICITY CORRECTION DEVICE, CHROMATICITY CORRECTION METHOD, AND DISPLAY DEVICE
    • 色度校正装置,色度校正方法和显示装置
    • US20140218539A1
    • 2014-08-07
    • US14347607
    • 2011-09-30
    • Katsuyuki Matsui
    • Katsuyuki Matsui
    • H04N17/04H04N9/30
    • H04N17/045G09G3/3406G09G3/3607G09G5/02G09G2320/0242G09G2320/041G09G2320/0666G09G2360/145G09G2360/16H04N9/30
    • A chromaticity correction device corrects chromaticity of a video signal displayed on a display panel of a display device to correspond to a change in a luminance value of the display panel. The chromaticity correction device includes a luminance detection unit which detects the luminance value, a backlight driving level detection unit which detects a backlight driving level, a temperature detection unit which detects an internal device temperature or an ambient temperature, a reference luminance value calculation unit which estimates a reference luminance value in a characteristic of an initial state, a chromaticity calculation unit which obtains a chromaticity change amount of white point chromaticity and estimated white point chromaticity that is an estimated value of current white point chromaticity, a chromaticity correction value calculation unit which obtains a chromaticity correction value and a chromaticity correction circuit which corrects the chromaticity of the video signal.
    • 色度校正装置校正显示在显示装置的显示面板上的视频信号的色度,以对应于显示面板的亮度值的变化。 色度校正装置包括检测亮度值的亮度检测单元,检测背光驱动电平的背光驱动电平检测单元,检测内部装置温度或环境温度的温度检测单元,基准亮度值运算单元, 估计初始状态的特征中的参考亮度值,获得作为当前白点色度的估计值的白点色度的色度变化量和估计白点色度的色度计算单元,色度校正值计算单元, 获得校正视频信号的色度的色度校正值和色度校正电路。