Contrast control for display device
    1.
    发明授权
    Contrast control for display device 有权
    显示设备对比度控制

    公开(公告)号:US08976192B2

    公开(公告)日:2015-03-10

    申请号:US13178106

    申请日:2011-07-07

    IPC分类号: G09G3/30 G09G5/02 G09G3/34

    摘要: A contrast control device is provided. The device of the invention includes a detecting unit, a judging unit, a backlight control unit, a gain generating unit and a contrast gain processing unit. The detecting unit calculates an average value and detects a maximum value of a current image. The judging unit generates a gain index and a brightness index according to the average value. The backlight control unit generates a backlight control signal according to the brightness index. The gain generating unit generates a first contrast gain value and a soft-clamping gain value according to the gain index, the average value and the maximum value and then selects one from the first contrast gain value and the soft-clamping gain value for output as a second contrast gain value according to an input pixel value of the current image. The contrast gain processing unit generates an output pixel value according to the second contrast gain value and the input pixel value.

    摘要翻译: 提供对比度控制装置。 本发明的装置包括检测单元,判断单元,背光控制单元,增益生成单元和对比度增益处理单元。 检测单元计算平均值并检测当前图像的最大值。 判断单元根据平均值生成增益指标和亮度指标。 背光控制单元根据亮度指标生成背光控制信号。 增益产生单元根据增益指数,平均值和最大值产生第一对比度增益值和软钳位增益值,然后从第一对比增益值和软钳位增益值中选择一个作为输出, 根据当前图像的输入像素值的第二对比度增益值。 对比增益处理单元根据第二对比度增益值和输入像素值生成输出像素值。

    Color management circuit and related method
    2.
    发明授权
    Color management circuit and related method 有权
    颜色管理电路及相关方法

    公开(公告)号:US08890901B2

    公开(公告)日:2014-11-18

    申请号:US12875147

    申请日:2010-09-03

    摘要: A color management circuit and a related color management method are provided. The color management circuit is disposed in a display device which has a panel provided with a panel conversion characteristic. The color management circuit includes: a first nonlinear conversion circuit, a color matrix conversion circuit and a second nonlinear conversion circuit. The first nonlinear conversion circuit is utilized for performing a first nonlinear conversion upon a color data to generate a first conversion data. The color matrix conversion circuit is utilized for performing a liner matrix calculation upon the first conversion data to generate a matrix calculation data. The second nonlinear conversion circuit is utilized for performing a second nonlinear conversion upon the matrix calculation data to generate a second conversion data to the panel, wherein a combined conversion characteristic of the second conversion characteristic with the panel conversion characteristic is substantially linear.

    摘要翻译: 提供了颜色管理电路和相关的颜色管理方法。 颜色管理电路设置在具有面板转换特性的面板的显示装置中。 颜色管理电路包括:第一非线性转换电路,色彩矩阵转换电路和第二非线性转换电路。 第一非线性转换电路用于对颜色数据执行第一非线性转换以产生第一转换数据。 彩色矩阵转换电路用于在第一转换数据上执行衬垫矩阵计算以产生矩阵计算数据。 第二非线性转换电路用于在矩阵计算数据上执行第二非线性转换,以产生到面板的第二转换数据,其中具有面板转换特性的第二转换特性的组合转换特性基本上是线性的。

    COLOR MANAGEMENT CIRCUIT AND RELATED METHOD
    3.
    发明申请
    COLOR MANAGEMENT CIRCUIT AND RELATED METHOD 有权
    颜色管理电路及相关方法

    公开(公告)号:US20110057963A1

    公开(公告)日:2011-03-10

    申请号:US12875147

    申请日:2010-09-03

    IPC分类号: G09G5/10

    摘要: A color management circuit and a related color management method are provided. The color management circuit is disposed in a display device which has a panel provided with a panel conversion characteristic. The color management circuit includes: a first nonlinear conversion circuit, a color matrix conversion circuit and a second nonlinear conversion circuit. The first nonlinear conversion circuit is utilized for performing a first nonlinear conversion upon a color data to generate a first conversion data. The color matrix conversion circuit is utilized for performing a liner matrix calculation upon the first conversion data to generate a matrix calculation data. The second nonlinear conversion circuit is utilized for performing a second nonlinear conversion upon the matrix calculation data to generate a second conversion data to the panel, wherein a combined conversion characteristic of the second conversion characteristic with the panel conversion characteristic is substantially linear.

    摘要翻译: 提供了颜色管理电路和相关的颜色管理方法。 色彩管理电路设置在具有面板转换特性的面板的显示装置中。 颜色管理电路包括:第一非线性转换电路,色彩矩阵转换电路和第二非线性转换电路。 第一非线性转换电路用于对颜色数据执行第一非线性转换以产生第一转换数据。 彩色矩阵转换电路用于在第一转换数据上执行衬垫矩阵计算以产生矩阵计算数据。 第二非线性转换电路用于对矩阵计算数据执行第二非线性转换,以产生到面板的第二转换数据,其中具有面板转换特性的第二转换特性的组合转换特性基本上是线性的。

    Method for creating gamma look-up table and display device
    4.
    发明授权
    Method for creating gamma look-up table and display device 有权
    用于创建伽马查找表和显示设备的方法

    公开(公告)号:US08648885B2

    公开(公告)日:2014-02-11

    申请号:US12704028

    申请日:2010-02-11

    IPC分类号: G09G5/10

    摘要: A method for creating a Gamma look-up table (LUT) includes: calculating interpolated display characteristics of a plurality of colors by using a nonlinear interpolation algorithm based on a plurality of display characteristics of the predetermined patterns wherein the number of the display characteristics is smaller than the product of the number of the colors and the number of the interpolated display characteristics of the colors; and correcting the interpolated display characteristics of the colors on the basis of a maximum display characteristic value and a reference gamma value so that the Gamma look-up table is created. The predetermined patterns comprise a plurality of gray level patterns which one-by-one correspond to a plurality of levels, and the interval of a pair of adjacent gray level patterns among the gray level patterns is different from the interval of another pair of adjacent gray level patterns among the gray level patterns.

    摘要翻译: 一种用于创建伽马查找表(LUT)的方法包括:通过使用基于预定图案的多个显示特性的非线性插值算法来计算多种颜色的内插显示特性,其中显示特性的数量较小 比颜色的数量和颜色的内插显示特性的数量的乘积; 以及基于最大显示特性值和参考伽马值来校正颜色的内插显示特性,从而创建伽马查找表。 预定图案包括多个灰度级图案,其逐一对应于多个级别,并且灰度级图案中的一对相邻灰度级图案的间隔与另一对相邻灰度的间隔不同 灰度级模式中的水平模式。

    METHOD FOR CREATING GAMMA LOOK-UP TABLE AND DISPLAY DEVICE
    5.
    发明申请
    METHOD FOR CREATING GAMMA LOOK-UP TABLE AND DISPLAY DEVICE 有权
    用于创建GAMMA查看表和显示设备的方法

    公开(公告)号:US20100225663A1

    公开(公告)日:2010-09-09

    申请号:US12704028

    申请日:2010-02-11

    IPC分类号: G09G5/02

    摘要: A method for creating a Gamma look-up table (LUT) includes: calculating interpolated display characteristics of a plurality of colors by using a nonlinear interpolation algorithm based on a plurality of display characteristics of the predetermined patterns wherein the number of the display characteristics is smaller than the product of the number of the colors and the number of the interpolated display characteristics of the colors; and correcting the interpolated display characteristics of the colors on the basis of a maximum display characteristic value and a reference gamma value so that the Gamma look-up table is created. The predetermined patterns comprise a plurality of gray level patterns which one-by-one correspond to a plurality of levels, and the interval of a pair of adjacent gray level patterns among the gray level patterns is different from the interval of another pair of adjacent gray level patterns among the gray level patterns.

    摘要翻译: 一种用于创建伽马查找表(LUT)的方法包括:通过使用基于预定图案的多个显示特性的非线性插值算法来计算多种颜色的内插显示特性,其中显示特性的数量较小 比颜色的数量和颜色的内插显示特性的数量的乘积; 以及基于最大显示特性值和参考伽马值来校正颜色的内插显示特性,从而创建伽马查找表。 预定图案包括多个灰度级图案,其逐一对应于多个级别,并且灰度级图案中的一对相邻灰度级图案的间隔与另一对相邻灰度的间隔不同 灰度级模式中的水平模式。