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    • 12. 发明授权
    • Liquid crystal display apparatus
    • 液晶显示装置
    • US08232956B2
    • 2012-07-31
    • US12064580
    • 2006-10-16
    • Toshiyuki FujineSeiji Kohashikawa
    • Toshiyuki FujineSeiji Kohashikawa
    • G09G3/36
    • G09G3/3406G09G3/3611G09G2310/04G09G2320/0285G09G2320/062G09G2320/0646G09G2320/0653G09G2320/066G09G2320/0673G09G2360/16H04N5/44591H04N21/4318H04N21/44008H04N21/84
    • A video with a display definition most suitable for the type of the video content to be displayed can be displayed. A liquid crystal display apparatus controls the luminance of the backlight light source according to the APL of the video signal measured by an APL measuring portion (16). The range of the video signal the APL of which is measured can be determined by, e.g., the luminance level of the video signal or by the genre information included in the inputted video signal or the OSD display information used when the liquid crystal apparatus (1) performs OSD display. The drawing shows the state that the upper and lower non-video areas are removed and an effective video area is determined. With this, the additional information displayed when the video signal is of a specific genre and the OSD-displayed additional information can be excluded, and the luminance of the backlight light source can be controlled to realize a display definition most suitable for the video signal.
    • 可以显示具有最适合于要显示的视频内容的类型的显示定义的视频。 液晶显示装置根据由APL测量部分(16)测量的视频信号的APL来控制背光光源的亮度。 测量其APL的视频信号的范围可以通过例如视频信号的亮度级别或由输入的视频信号中包含的类型信息或当液晶装置(1)所使用的OSD显示信息 )执行OSD显示。 该图示出了去除上部和下部非视频区域并确定有效视频区域的状态。 由此,可以排除在视频信号为特定类型时显示的附加信息和OSD显示的附加信息,并且可以控制背光光源的亮度,以实现最适合于视频信号的显示定义。
    • 13. 发明申请
    • LIQUID CRYSTAL DISPLAY APPARATUS
    • 液晶显示装置
    • US20090262063A1
    • 2009-10-22
    • US12092817
    • 2006-11-01
    • Toshiyuki FujineSeiji KohashikawaYuhya SekiguchiYuhichiro Yamaguchi
    • Toshiyuki FujineSeiji KohashikawaYuhya SekiguchiYuhichiro Yamaguchi
    • G09G3/36
    • G09G3/3406G09G2320/0238G09G2320/0626G09G2320/064G09G2320/0653G09G2330/021G09G2360/144G09G2360/16H04N5/58H04N21/42202
    • The present invention provides a display device capable of realizing an appropriate screen display luminance in accordance with a video feature quantity and brightness around and sufficiently reducing power consumption. A liquid crystal display apparatus (1) includes: a liquid crystal panel (20) for displaying a video by an input video signal; a backlight unit (17) as a light source for irradiating the liquid crystal panel (20); and a brightness sensor (24) for detecting the brightness around the liquid crystal display apparatus (1). According to the brightness detected by the brightness sensor (24), luminance conversion characteristic defining the light emission luminance of the backlight for the feature quantity (such as APL) of the input video signal is changed. Here, the luminance conversion characteristic is changed so that the light emission luminance is reduced as the brightness around the liquid crystal display apparatus becomes darker and the position of the characteristic modification point as the point where the slope of the luminance conversion characteristic is changed is shifted in the direction of the feature quantity change. According to the obtained luminance conversion characteristic, the light emission luminance of the backlight is controlled.
    • 本发明提供一种能够根据视频特征量和亮度实现适当的屏幕显示亮度并充分降低功耗的显示装置。 液晶显示装置(1)包括:用于通过输入视频信号显示视频的液晶面板(20); 作为用于照射所述液晶面板(20)的光源的背光单元(17); 以及用于检测液晶显示装置(1)周围的亮度的亮度传感器(24)。 根据由亮度传感器(24)检测到的亮度,改变了对输入视频信号的特征量(例如APL)定义背光的发光亮度的亮度转换特性。 这里,改变亮度转换特性,使得随着液晶显示装置周围的亮度变暗,发光亮度降低,并且特性修改点的位置作为改变亮度变换特性的斜率的点被移位 在特征量变化的方向上。 根据获得的亮度转换特性,控制背光的发光亮度。
    • 14. 发明申请
    • LIQUID CRYSTAL DISPLAY APPARATUS
    • 液晶显示装置
    • US20090146941A1
    • 2009-06-11
    • US12064580
    • 2006-10-16
    • Toshiyuki FujineSeiji Kohashikawa
    • Toshiyuki FujineSeiji Kohashikawa
    • G09G3/36
    • G09G3/3406G09G3/3611G09G2310/04G09G2320/0285G09G2320/062G09G2320/0646G09G2320/0653G09G2320/066G09G2320/0673G09G2360/16H04N5/44591H04N21/4318H04N21/44008H04N21/84
    • A video with a display definition most suitable for the type of the video content to be displayed can be displayed. A liquid crystal display apparatus controls the luminance of the backlight light source according to the APL of the video signal measured by an APL measuring portion (16). The range of the video signal the APL of which is measured can be determined by, e.g., the luminance level of the video signal or by the genre information included in the inputted video signal or the OSD display information used when the liquid crystal apparatus (1) performs OSD display. The drawing shows the state that the upper and lower non-video areas are removed and an effective video area is determined. With this, the additional information displayed when the video signal is of a specific genre and the OSD-displayed additional information can be excluded, and the luminance of the backlight light source can be controlled to realize a display definition most suitable for the video signal.
    • 可以显示具有最适合于要显示的视频内容的类型的显示定义的视频。 液晶显示装置根据由APL测量部分(16)测量的视频信号的APL来控制背光光源的亮度。 测量其APL的视频信号的范围可以通过例如视频信号的亮度级别或由输入的视频信号中包含的类型信息或当液晶装置(1)所使用的OSD显示信息 )执行OSD显示。 该图示出了去除上部和下部非视频区域并确定有效视频区域的状态。 由此,可以排除在视频信号为特定类型时显示的附加信息和OSD显示的附加信息,并且可以控制背光光源的亮度,以实现最适合于视频信号的显示定义。
    • 17. 发明授权
    • Video display device and television receiving device
    • 视频显示设备和电视接收设备
    • US09350961B2
    • 2016-05-24
    • US14373367
    • 2012-07-19
    • Toshiyuki FujineYoji Shiraya
    • Toshiyuki FujineYoji Shiraya
    • H04N9/64G09G3/34H04N9/30G09G3/20
    • H04N9/646G09G3/2092G09G3/3406G09G3/3426G09G2320/0271G09G2320/062G09G2320/064G09G2320/0646G09G2320/0653G09G2320/066G09G2360/16H04N9/30
    • The present invention makes possible video expressions with increased feeling of brightness and increased contrast feeling and to be able to prevent the feeling of brightness and the contrast feeling from becoming unnatural during execution of the multi-screen display. This video display device comprises: a control portion (a signal processing portion (1); an area-active-control/luminance-stretch-portion (4)) that controls a displaying portion (8) and a backlight portion (6); and a display instruction detection portion (13a) that detects display instructions of first and second input video signals. The control portion stretches and increases the luminance of the backlight portion (6), and also controls a light emitting portion enhancement processing according to a result of the detection. In the light emitting portion enhancement processing, the display luminance of a light emitting portion is enhanced by producing a histogram by integrating number of pixels for a predetermined feature amount relating to the brightness of the input video signal, detecting an upper region of a predetermined range of the histogram as the light emitting portion, and reducing luminance of a video signal of non-light emitting portion except the light emitting portion of the input video signal.
    • 本发明使视觉表达能够增加亮度感和增强的对比度感觉,并且能够在执行多画面显示期间防止亮度感和对比度感觉变得不自然。 该视频显示装置包括:控制显示部分(8)和背光部分(6)的控制部分(信号处理部分(1);区域主动控制/亮度伸展部分(4)); 以及检测第一和第二输入视频信号的显示指令的显示指令检测部分(13a)。 控制部分拉伸和增加背光部分(6)的亮度,并且还根据检测结果来控制发光部分增强处理。 在发光部分增强处理中,通过对与输入视频信号的亮度相关的预定特征量的像素数进行积分来产生直方图,从而增强发光部分的显示亮度,检测预定范围的上部区域 作为发光部分,并且降低除了输入视频信号的发光部分之外的非发光部分的视频信号的亮度。
    • 19. 发明授权
    • Video display device
    • 视频显示设备
    • US08625031B2
    • 2014-01-07
    • US13978194
    • 2011-11-29
    • Tomoharu NoutoshiTakashi KandaToshiyuki Fujine
    • Tomoharu NoutoshiTakashi KandaToshiyuki Fujine
    • H04N5/14H04N5/21G06K9/36G06K9/00
    • H04N5/21G09G5/02G09G2320/0271G09G2360/16
    • A histogram generation portion calculates a prescribed feature value of a pixel and the maximum feature value for the pixel, for each pixel of one frame of an input video signal. Then, the ratio of the feature value of the pixel to the maximum feature value is calculated for each pixel as an index of color brightness, and a histogram generated wherein the numbers of pixels are integrated by index value. An enhancement processing portion applies gain and carries out an enhancement for pixel values wherein the index in the histogram which the histogram generation portion generates is greater than or equal to a prescribed threshold. The feature value is treated as a luminosity (L*) which is defined with CIELAB chroma space. Additionally, the feature value may be data which has the maximum tone value among pixel RGB data, or may be a luminosity value (Y) of the pixel.
    • 对于输入视频信号的一帧的每个像素,直方图生成部分计算像素的规定特征值和像素的最大特征值。 然后,针对每个像素计算像素的特征值与最大特征值的比值作为颜色亮度的指标,并且生成的直方图,其中像素的数目通过索引值被积分。 增强处理部分应用增益并对像素值进行增强,其中直方图生成部分产生的直方图中的索引大于或等于规定阈值。 特征值被视为由CIELAB色度空间定义的亮度(L *)。 另外,特征值可以是像素RGB数据中具有最大色调值的数据,或者可以是像素的亮度值(Y)。