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    • 7. 发明申请
    • VIDEO DISPLAY DEVICE AND A TELEVISION RECEIVER
    • 视频显示设备和电视接收器
    • US20140009513A1
    • 2014-01-09
    • US14006531
    • 2011-11-30
    • Tomoharu NoutoshiTakashi KandaToshiyuki Fujine
    • Tomoharu NoutoshiTakashi KandaToshiyuki Fujine
    • G09G5/10
    • G09G5/10G09G3/3426G09G3/36G09G2320/0626G09G2320/0646G09G2320/066G09G2320/0673G09G2360/16H04N5/57H04N21/4318H04N21/44008
    • A portion of a video signal for emitting light is detected, and the display brightness of the light emission portion is enhanced and displayed in a more conspicuous manner, whereby the sense of radiance is increased and the image quality is improved. A light emission detector (2) of the video display device generates a histogram in which the number of pixels is integrated into a predetermined feature quantity of an input video signal; and detects an upper region of a predetermined range of the histogram as a light emission section. An area-active control/brightness stretch portion (4) stretches and boosts the brightness of a backlight portion (6). A mapping portion (3) reduces the brightness of the video signal in a non-light-emission section, which excludes the detected light emission section. An increase in the screen brightness of the non-light-emission section is thereby suppressed, and the display brightness of the light emission section is enhanced.
    • 检测用于发光的视频信号的一部分,并且以更明显的方式增强和显示发光部分的显示亮度,从而增加了感光度并提高了图像质量。 视频显示装置的发光检测器(2)生成其中像素数被集成到输入视频信号的预定特征量中的直方图; 并且将直方图的预定范围的上部区域检测为发光部。 区域主动控制/亮度伸展部分(4)延伸和提升背光部分(6)的亮度。 映射部分(3)降低非发光部分中的视频信号的亮度,其不包括检测到的发光部分。 由此抑制了非发光部分的屏幕亮度的增加,并且增强了发光部分的显示亮度。