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    • 4. 发明授权
    • Method and apparatus for adjusting backlight brightness
    • 用于调节背光亮度的方法和装置
    • US07944430B2
    • 2011-05-17
    • US11856345
    • 2007-09-17
    • Hye-Dong JungKyung Sun HamKi-Man JeonHyung-Su Lee
    • Hye-Dong JungKyung Sun HamKi-Man JeonHyung-Su Lee
    • G09G3/36
    • G09G3/3426G09G2320/0646G09G2320/0653G09G2330/021G09G2360/16
    • A method for adjusting backlight brightness for an image display device whose backlights are arranged in an M×N, 2-dimensional array, and an apparatus for realizing this are provided. The method comprises a full search step determining the brightness adjustment value for each of the M×N image blocks corresponding to the backlights for the entire input image and selecting a reference block; a partial search step determining the brightness adjustment value for the selected reference block and surrounding blocks thereof for the image frame inputted following the full search step and reselecting a reference block based on the brightness adjustment value of the previous reference block and surrounding blocks thereof; and an adjustment step adjusting brightness of the backlights in accordance with the brightness adjustment value for each block as determined by the full search step and/or partial search step. In accordance with the present invention, it is possible to increase the speed of image analysis for a display that uses backlights. Likewise, controlling the backlight using the characteristics of the analyzed image enables reducing power consumption and increasing the contrast ratio by applying backlight brightness according to the characteristics of the image.
    • 提供一种用于调整其背光以M×N,2维阵列布置的图像显示装置的背光亮度的方法和用于实现该背光的装置。 该方法包括:确定针对整个输入图像的与背光相对应的M×N个图像块中的每一个的亮度调整值并选择参考块的全搜索步骤; 部分搜索步骤,确定用于所述全搜索步骤之后输入的图像帧的所选参考块及其周围块的亮度调整值,并且基于先前参考块及其周围块的亮度调整值重新选择参考块; 以及调整步骤,根据由全搜索步骤和/或部分搜索步骤确定的每个块的亮度调整值,调整背光的亮度。 根据本发明,可以提高使用背光的显示器的图像分析速度。 同样地,使用分析图像的特性来控制背光,能够通过根据图像的特性应用背光亮度来降低功耗并提高对比度。
    • 5. 发明申请
    • Method And Apparatus For Adjusting Backlight Brightness
    • 调整背光亮度的方法和装置
    • US20090028460A1
    • 2009-01-29
    • US11856345
    • 2007-09-17
    • Hye Dong JUNGKyung-Sun HamKi-Man JeonHyung-Su Lee
    • Hye Dong JUNGKyung-Sun HamKi-Man JeonHyung-Su Lee
    • G06K9/40
    • G09G3/3426G09G2320/0646G09G2320/0653G09G2330/021G09G2360/16
    • A method for adjusting backlight brightness for an image display device whose backlights are arranged in an M×N, 2-dimensional array, and an apparatus for realizing this are provided. The method comprises a full search step determining the brightness adjustment value for each of the M×N image blocks corresponding to the backlights for the entire input image and selecting a reference block; a partial search step determining the brightness adjustment value for the selected reference block and surrounding blocks thereof for the image frame inputted following the full search step and reselecting a reference block based on the brightness adjustment value of the previous reference block and surrounding blocks thereof; and an adjustment step adjusting brightness of the backlights in accordance with the brightness adjustment value for each block as determined by the full search step and/or partial search step. In accordance with the present invention, it is possible to increase the speed of image analysis for a display that uses backlights. Likewise, controlling the backlight using the characteristics of the analyzed image enables reducing power consumption and increasing the contrast ratio by applying backlight brightness according to the characteristics of the image.
    • 提供了一种用于调整其背光以M×N,2维阵列布置的图像显示装置的背光亮度的方法和用于实现这一点的装置。 该方法包括:完整搜索步骤,确定对应于整个输入图像的背光的每个M×N图像块的亮度调节值,并选择参考块; 部分搜索步骤,确定用于所述全搜索步骤之后输入的图像帧的所选参考块及其周围块的亮度调整值,并且基于先前参考块及其周围块的亮度调整值重新选择参考块; 以及调整步骤,根据由全搜索步骤和/或部分搜索步骤确定的每个块的亮度调整值,调整背光的亮度。 根据本发明,可以提高使用背光的显示器的图像分析速度。 同样地,使用分析图像的特性来控制背光,能够通过根据图像的特性应用背光亮度来降低功耗并提高对比度。