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    • 3. 发明公开
    • Image display apparatus for fixing luminance of blank area and varying only luminance of image.
    • 是在其中亮度在一个空置区保持的图像显示装置,以及在图像区域修改只有亮度
    • EP1067776A2
    • 2001-01-10
    • EP00304892.3
    • 2000-06-09
    • ALPS ELECTRIC CO., LTD.
    • Inage, FumiakiKatsuyama, TomoyasuDate, YoshihiroHagiwara, Naoki
    • H04N5/20
    • H04N5/23293H04N5/16H04N5/20H04N5/66
    • An image display apparatus (1) fixes the luminance of a blank area and varies only the luminance of an image. The image display apparatus includes a A/D conversion device (3) for converting an input analog image signal into digital image data, a black level setting device (6) for setting the black level of the digital image data by adjusting a lower-limit reference voltage of the A/D conversion device, a blank data generation device (9) for generating blank data for displaying a blank area around an image display area on the screen, an image data combining device (11) for combining the blank data generated by this blank data generation device and the digital image data output from the A/D conversion device, and a display device (12) for displaying the output of this image data combining device on the screen.
    • 一种图像显示装置(1)固定的空白区域的亮度,并改变只是一个图像的亮度。 该图像显示装置包括:A / D转换装置(3),用于将输入模拟图像信号转换成数字图像数据,黑电平设置装置(6),用于通过调节下限设定的数字图像数据的黑电平 所述A / D转换装置,一个空白的数据生成装置(9),用于产生空白数据用于在屏幕上围绕图像显示区域中显示的空白区域的参考电压,图像数据,用于组合所生成的空白数据合成装置(11) 通过该空白数据生成设备,并从A / D转换装置输出的数字图像数据,以及用于显示该图像数据在屏幕上合成装置的输出的显示装置(12)。
    • 4. 发明公开
    • Liquid crystal display with contrast adjustment
    • Flüssigkristallanzeigemit Kontrasteinstellung
    • EP0982709A1
    • 2000-03-01
    • EP99306555.6
    • 1999-08-19
    • ALPS ELECTRIC CO., LTD.
    • Inage, Fumiaki
    • G09G3/36
    • G09G3/3611G09G2320/0606G09G2320/066
    • A liquid crystal display that does not deteriorate the picture quality and facilitates the contrast adjustment with a simple construction. In order to achieve the object, the liquid crystal display contains AID converters (2) that convert the luminance signal Y and the two color-difference signals (Pr, Pb) of an input video signal each into digital signals in correspondence with the respective signals, and a variable power supply (3) that sets the magnitudes of the reference voltage ranges to determine the upper limit voltages and the lower limit voltages of the digital signals to one identical magnitude, which is given to each of these AID converters. The digital signals outputted from these AID converters and the synchronizing signal outputted from the PLL circuit (14) are inputted to the PLD (13) and these digital signals are outputted to the subsequent scanning line driving circuit (30) and the signal line driving circuit (31) synchronously with the synchronising signal, thus displaying the picture images on the liquid crystal panel (32).
    • 一种液晶显示器,不会使图像质量恶化,并且以简单的结构便于对比度调节。 为了实现该目的,液晶显示器包含将输入视频信号的亮度信号Y和两个色差信号(Pr,Pb)分别转换成与各信号对应的数字信号的AID转换器(2) 以及设定参考电压范围的大小的可变电源(3),以将这些AID转换器中的每一个给出,将数字信号的上限电压和下限电压确定为相同的幅度。 从这些AID转换器输出的数字信号和从PLL电路(14)输出的同步信号输入到PLD(13),这些数字信号被输出到后续的扫描线驱动电路(30),信号线驱动电路 (31)与同步信号同步,从而将图像显示在液晶面板(32)上。