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公开(公告)号:US08130325B2
公开(公告)日:2012-03-06
申请号:US12446039
申请日:2007-11-26
申请人: Noriyuki Iwakura , Nobuo Taketani , Takeru Yamashita , Shozo Tozaki , Takashi Ootomo , Hiroshi Yoshinari
发明人: Noriyuki Iwakura , Nobuo Taketani , Takeru Yamashita , Shozo Tozaki , Takashi Ootomo , Hiroshi Yoshinari
CPC分类号: H04N5/147 , G09G3/288 , G09G2320/0242 , G09G2320/103 , G09G2330/021 , G09G2360/16
摘要: A scene change detecting circuit (1) detects a scene change of video. An average luminance level operating circuit (2) calculates an average luminance level (APL) of a video signal (VD). A luminance overdrive amount calculating circuit (3) calculates a luminance overdrive amount (OD) based on the average luminance level (APL). A time-linked attenuating circuit (7) outputs a power consumption limit correction amount (PA) by attenuating the luminance overdrive amount (OD) with an elapse of time from a point in time of detecting the scene change. An adder (8) adds the power consumption limit correction amount (PA) and a reference power consumption limit value (Lp) to output the addition result as a power consumption limit amount (PL). An ABL circuit (4) calculates a luminance limit amount (BL) based on luminance limit characteristics, the average luminance level (APL) and the power consumption limit amount (PL). A luminance level control circuit (5) determines a display drive condition (BC) based on the luminance limit amount (BL). A PDP drive controller (6) drives a display panel (20) based on the video signal (VD) and the display driving condition (BC).
摘要翻译: 场景变化检测电路(1)检测视频的场景变化。 平均亮度电平操作电路(2)计算视频信号(VD)的平均亮度电平(APL)。 亮度过驱动量计算电路(3)基于平均亮度电平(APL)来计算亮度过驱动量(OD)。 时间链接的衰减电路(7)通过从检测到场景变化的时间点开始经过时间来衰减亮度过驱动量(OD)来输出功耗限制校正量(PA)。 加法器(8)将功耗限制修正量(PA)和参考功耗限制值(Lp)相加,作为功耗限制量(PL)输出相加结果。 ABL电路(4)基于亮度极限特性,平均亮度电平(APL)和功耗限制量(PL)来计算亮度限制量(BL)。 亮度级控制电路(5)基于亮度极限量(BL)确定显示驱动条件(BC)。 PDP驱动控制器(6)基于视频信号(VD)和显示驱动条件(BC)驱动显示面板(20)。
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公开(公告)号:US20100321581A1
公开(公告)日:2010-12-23
申请号:US12446039
申请日:2007-11-26
申请人: Noriyuki Iwakura , Nobuo Taketani , Takeru Yamashita , Shozo Tozaki , Takashi Ootomo , Hiroshi Yoshinari
发明人: Noriyuki Iwakura , Nobuo Taketani , Takeru Yamashita , Shozo Tozaki , Takashi Ootomo , Hiroshi Yoshinari
IPC分类号: H04N5/57
CPC分类号: H04N5/147 , G09G3/288 , G09G2320/0242 , G09G2320/103 , G09G2330/021 , G09G2360/16
摘要: A scene change detecting circuit (1) detects a scene change of video. An average luminance level operating circuit (2) calculates an average luminance level (APL) of a video signal (VD). A luminance overdrive amount calculating circuit (3) calculates a luminance overdrive amount (OD) based on the average luminance level (APL). A time-linked attenuating circuit (7) outputs a power consumption limit correction amount (PA) by attenuating the luminance overdrive amount (OD) with an elapse of time from a point in time of detecting the scene change. An adder (8) adds the power consumption limit correction amount (PA) and a reference power consumption limit value (Lp) to output the addition result as a power consumption limit amount (PL). An ABL circuit (4) calculates a luminance limit amount (BL) based on luminance limit characteristics, the average luminance level (APL) and the power consumption limit amount (PL). A luminance level control circuit (5) determines a display drive condition (BC) based on the luminance limit amount (BL). A PDP drive controller (6) drives a display panel (20) based on the video signal (VD) and the display driving condition (BC).
摘要翻译: 场景变化检测电路(1)检测视频的场景变化。 平均亮度电平操作电路(2)计算视频信号(VD)的平均亮度电平(APL)。 亮度过驱动量计算电路(3)基于平均亮度电平(APL)来计算亮度过驱动量(OD)。 时间链接的衰减电路(7)通过从检测到场景变化的时间点开始经过时间来衰减亮度过驱动量(OD)来输出功耗限制校正量(PA)。 加法器(8)将功耗限制修正量(PA)和参考功耗限制值(Lp)相加,作为功耗限制量(PL)输出相加结果。 ABL电路(4)基于亮度极限特性,平均亮度电平(APL)和功耗限制量(PL)来计算亮度限制量(BL)。 亮度级控制电路(5)基于亮度极限量(BL)确定显示驱动条件(BC)。 PDP驱动控制器(6)基于视频信号(VD)和显示驱动条件(BC)驱动显示面板(20)。
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