Method and system for driving a backlight in a display
    1.
    发明授权
    Method and system for driving a backlight in a display 有权
    用于驱动显示器中的背光的方法和系统

    公开(公告)号:US08810501B2

    公开(公告)日:2014-08-19

    申请号:US12667065

    申请日:2008-07-01

    IPC分类号: G09G3/36

    摘要: A backlight control system is configured to control a backlight of a display that includes light sources positioned at light source positions for providing illumination to the backside of the display panel. The system includes a drive value generator configured to provide light source drive values for causing the backlight profile to gradually descend around a high luminance portion of the display at a rate that is independent of a position of the high luminance portion with respect to the light source positions. The high luminance portion of the display has a higher luminance than an area around the high luminance portion of the display.

    摘要翻译: 背光控制系统被配置为控制显示器的背光源,该显示器包括位于光源位置处的光源,用于向显示面板的背面提供照明。 该系统包括驱动值发生器,其被配置为提供光源驱动值,用于使得背光轮廓以与高亮度部分相对于光源的位置无关的速率以显示器的高亮度部分逐渐下降 职位 显示器的高亮度部分具有比显示器的高亮度部分周围的区域更高的亮度。

    METHOD AND SYSTEM FOR DRIVING A BACKLIGHT IN A DISPLAY
    2.
    发明申请
    METHOD AND SYSTEM FOR DRIVING A BACKLIGHT IN A DISPLAY 有权
    用于在显示器中驱动背光的方法和系统

    公开(公告)号:US20100289833A1

    公开(公告)日:2010-11-18

    申请号:US12667065

    申请日:2008-07-01

    IPC分类号: G09G5/10

    摘要: A backlight control system for controlling a backlight of a display. The display (100) comprises a transmissive display panel (102) and a backlight (104) for providing an illumination to a backside (108) of the display panel. The backlight comprises light sources (110) positioned at light source positions for providing illumination to the backside of the display panel. The system comprises a drive value generator (106) for providing light source drive values (112) for causing the backlight profile to gradually descend around a high luminance portion of the display at a rate that is independent of a position of the high luminance portion with respect to the light source positions. The high luminance portion of the display has a higher luminance than an area around the high luminance portion of the display. The system allows to prevent a disturbing perception of backlight structure and halo.

    摘要翻译: 一种用于控制显示器的背光的背光控制系统。 显示器(100)包括用于向显示面板的背面(108)提供照明的透射显示面板(102)和背光源(104)。 背光源包括位于光源位置处的光源(110),用于向显示面板的背面提供照明。 该系统包括用于提供光源驱动值(112)的驱动值发生器(106),用于使得背光轮廓以与高亮度部分的位置无关的速率以显示器的高亮度部分逐渐下降, 尊重光源的位置。 显示器的高亮度部分具有比显示器的高亮度部分周围的区域更高的亮度。 该系统允许防止背光结构和光晕的令人不安的感觉。

    Motion sequence pattern detection
    3.
    发明申请
    Motion sequence pattern detection 审中-公开
    运动序列模式检测

    公开(公告)号:US20060209957A1

    公开(公告)日:2006-09-21

    申请号:US10535811

    申请日:2003-10-29

    IPC分类号: H04N11/02

    摘要: A motion sequence pattern detector (200,300) for detecting a periodic pattern of motion sequences within a succession of video fields (100,102) comprises a motion detection unit (202) for detecting presence of motion between pairs of fields of the succession of video fields (100,102) by means of computing differences between pixel values derived from first and second fields of the pairs of fields, succeeded by comparing the differences with a number of predetermined pixel value difference thresholds and for outputting motion detection signals for the pairs of fields on basis of the comparisons; and a pattern recognition unit (204) for detecting the periodic pattern by comparing the number of sequences of the motion detection signals for the pairs of fields with a predetermined sequence. If for one of the number of sequences the periodic pattern is detected then a final output is generated which indicates that the succession of video fields corresponds to film mode.

    摘要翻译: 一种运动序列模式检测器(200,300),用于检测一系列视频场(100,102)内运动序列的周期性模式,包括运动检测单元(202),用于检测连续的视频场(100,102)中的场对之间的运动 ),通过计算从场对中的第一和第二场导出的像素值之间的差异,通过将差与若干个预定像素值差阈值进行比较,并且基于该场的对,输出用于场场对的运动检测信号 比较; 以及用于通过将所述场对的运动检测信号的序列数与预定序列进行比较来检测所述周期性图案的模式识别单元(204)。 如果对于序列数目之一,则检测到周期性图案,则产生最终输出,其指示视频场的连续对应于胶片模式。

    Block artifacts detection
    4.
    发明申请
    Block artifacts detection 审中-公开
    块伪影检测

    公开(公告)号:US20060218619A1

    公开(公告)日:2006-09-28

    申请号:US10567218

    申请日:2004-07-29

    IPC分类号: H04N7/16

    摘要: A block artifacts detection device (100) for detecting block artifacts in a video signal is disclosed. The block artifacts detection device (100) comprises: computing means (102) for computing a gradient signal on basis of the video signal; establishing means (104) for establishing a list of samples corresponding to respective local maximum values of the gradient signal; a histogram determining means (106) for determining a histogram of inter-sample distances, a first one of the inter-sample distances corresponding to a first distance between a first one of the samples and a second one of the samples succeeding the first one of the samples, and a second one of the inter-sample distances corresponding to a second distance between the first one of the samples and a third one of the samples succeeding the second one of the samples; and analyzing means (108) for analyzing the histogram of inter-sample distances and for producing a block artifact indicator on basis of the histogram.

    摘要翻译: 公开了一种用于检测视频信号中的块伪影的块伪影检测装置(100)。 块伪像检测装置(100)包括:用于基于视频信号计算梯度信号的计算装置(102) 建立装置(104),用于建立与梯度信号的各个局部最大值对应的采样列表; 用于确定样本间距离的直方图的直方图确定装置(106),对应于第一样本之间的第一距离的样本间距离中的第一个和与第一个样本之间的第一个样本之后的第二个样本 所述样本和所述样本间距离中的第二个距离对应于所述第一样本之间的第二距离和所述样本中的第二样本之后的第三样本; 以及分析装置(108),用于分析采样间距离的直方图,并根据直方图产生块伪像指示符。

    Recognizing film and video occurring in parallel in television fields
    5.
    发明申请
    Recognizing film and video occurring in parallel in television fields 审中-公开
    认识到在电视领域并行发生的电影和视频

    公开(公告)号:US20060158513A1

    公开(公告)日:2006-07-20

    申请号:US10537887

    申请日:2003-11-12

    CPC分类号: H04N7/0112

    摘要: A motion sequence pattern detector (300,301) for detecting presence of film material in a series of consecutive video fields (pp,p,c), is arranged to compute for a first one of the consecutive fields a value of a video motion measure and a value of a film motion measure and to determine the presence of film material on basis of both motion measures. The value of the video motion measure is computed by: establishing a plurality of motion patterns for respective groups of pixels of the first one of the consecutive fields; comparing each of the plurality of motion patterns with a predetermined video motion pattern and conditionally increasing the value of the video motion measure. The value of the film motion measure is computed by comparing each of the plurality of motion patterns with a predetermined film motion pattern and conditionally increasing the value of the film motion measure.

    摘要翻译: 用于检测一系列连续视频场(pp,p,c)中的胶片材料的存在的运动序列图案检测器(300,301)被布置为针对第一个连续场来计算视频运动测量值和 电影运动测量的价值,并且基于两种运动测量来确定胶片材料的存在。 视频运动测量的值通过以下方式计算:为连续场中第一个的各个像素组建立多个运动模式; 将多个运动模式中的每一个与预定的视频运动模式进行比较,并且有条件地增加视频运动测量的值。 通过将多个运动图案中的每一个与预定的胶片运动图案进行比较并有条件地增加胶片运动测量的值来计算胶片运动量的值。