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    • 2. 发明授权
    • Image display method and image display device
    • 图像显示方法和图像显示装置
    • US07631974B2
    • 2009-12-15
    • US12439291
    • 2007-08-28
    • Kazuo Mukai
    • Kazuo Mukai
    • G09G5/10G03B21/14
    • G09G3/20G03B21/006G09G5/10G09G2320/0626G09G2360/144G09G2360/16H04N5/58H04N9/3182H04N9/3194H04N21/42202H04N21/4318
    • Difference values that are defined as values representing a magnitude of an influence exerted upon an illuminance of an ambient environment according to a brightness component of an input video signal and are set so as to correspond to the brightness component based on a result of measuring the magnitude of the influence previously, a plurality of illuminance ranges set by dividing an extent of the illuminance of the ambient environment, and brightness correction characteristic data for correcting the brightness component according to each of the illuminance ranges are stored. The brightness component is detected, so that the difference values are selected based on the detected value (S101), an illuminance sensor measures the illuminance of the ambient environment repeatedly (S102), one of the illuminance ranges is selected based on illuminance detection values obtained by previous and current measurements and the selected difference values (S103), and the brightness correction characteristic data according to the selected illuminance range is selected, so that the brightness component of the input video signal is corrected (S104). By reflecting the influence of reflected light from a screen due to image projection based on the input video signal, the brightness can be corrected stably according to a change in the brightness of the use environment.
    • 差分值被定义为表示根据输入视频信号的亮度分量施加于周围环境的照度的影响的大小的值,并且被设置为基于测量幅度的结果对应于亮度分量 存在以下的影响,存储通过对周围环境的照度的范围进行分割而设定的多个照度范围和根据各照度范围校正亮度成分的亮度校正特性数据。 检测亮度分量,根据检测值选择差值(S101),照度传感器反复测量周围环境的照度(S102),根据获得的照度检测值选择照度范围之一 通过先前和当前测量以及所选择的差值(S103),并且选择根据所选择的照度范围的亮度校正特性数据,从而校正输入视频信号的亮度分量(S104)。 通过基于输入视频信号反映由于图像投影引起的来自屏幕的反射光的影响,可以根据使用环境的亮度的变化来稳定地校正亮度。
    • 3. 发明申请
    • IMAGE DISPLAY METHOD AND IMAGE DISPLAY DEVICE
    • 图像显示方法和图像显示装置
    • US20090256974A1
    • 2009-10-15
    • US12439291
    • 2007-08-28
    • Kazuo Mukai
    • Kazuo Mukai
    • H04N5/74
    • G09G3/20G03B21/006G09G5/10G09G2320/0626G09G2360/144G09G2360/16H04N5/58H04N9/3182H04N9/3194H04N21/42202H04N21/4318
    • Difference values that are defined as values representing a magnitude of an influence exerted upon an illuminance of an ambient environment according to a brightness component of an input video signal and are set so as to correspond to the brightness component based on a result of measuring the magnitude of the influence previously, a plurality of illuminance ranges set by dividing an extent of the illuminance of the ambient environment, and brightness correction characteristic data for correcting the brightness component according to each of the illuminance ranges are stored. The brightness component is detected, so that the difference values are selected based on the detected value (S101), an illuminance sensor measures the illuminance of the ambient environment repeatedly (S102), one of the illuminance ranges is selected based on illuminance detection values obtained by previous and current measurements and the selected difference values (S103), and the brightness correction characteristic data according to the selected illuminance range is selected, so that the brightness component of the input video signal is corrected (S104). By reflecting the influence of reflected light from a screen due to image projection based on the input video signal, the brightness can be corrected stably according to a change in the brightness of the use environment.
    • 差分值被定义为表示根据输入视频信号的亮度分量施加于周围环境的照度的影响的大小的值,并且被设置为基于测量幅度的结果对应于亮度分量 存在以下的影响,存储通过对周围环境的照度的范围进行分割而设定的多个照度范围和根据各照度范围校正亮度成分的亮度校正特性数据。 检测亮度分量,根据检测值选择差值(S101),照度传感器反复测量周围环境的照度(S102),根据获得的照度检测值选择照度范围之一 通过先前和当前测量以及所选择的差值(S103),并且选择根据所选择的照度范围的亮度校正特性数据,从而校正输入视频信号的亮度分量(S104)。 通过基于输入视频信号反映由于图像投影引起的来自屏幕的反射光的影响,可以根据使用环境的亮度的变化来稳定地校正亮度。
    • 4. 发明授权
    • Liquid crystal projector
    • 液晶投影仪
    • US06243067B1
    • 2001-06-05
    • US08850097
    • 1997-05-01
    • Toshiyuki NoguchiKazuo Mukai
    • Toshiyuki NoguchiKazuo Mukai
    • G09G336
    • G09G3/3406G09G2330/021G09G2330/025
    • A liquid crystal projector that has a plurality of light sources for providing light to a light crystal panel, which functions as an image forming unit in the projector. A plurality of light source driving power sources are connected to the plural light sources individually by means of a light source lighting control circuit. As the light source lighting control circuit, a delay circuit, a counter circuit, or a programmed microcomputer is used. By controlling the light source driving power sources, each one of the plural light sources lights up sequentially or alternately in time. The light emitted from the light sources is modulated by the liquid crystal panel to produce a light image, and the light image is projected through the projector lens.
    • 一种液晶投影仪,具有多个用于向投影仪中用作图像形成单元的光晶体面板提供光的光源。 多个光源驱动电源通过光源点亮控制电路分别连接到多个光源。 作为光源照明控制电路,使用延迟电路,计数器电路或编程微计算机。 通过控制光源驱动电源,多个光源中的每一个在时间上依次或交替地点亮。 从光源发射的光被液晶面板调制以产生光图像,并且通过投影透镜投影光图像。
    • 5. 发明授权
    • Image display apparatus and image display method
    • 图像显示装置和图像显示方法
    • US08743289B2
    • 2014-06-03
    • US12910339
    • 2010-10-22
    • Kazuo Mukai
    • Kazuo Mukai
    • H04N5/202H04N9/69
    • H04N9/69G09G3/001G09G5/003G09G5/06G09G2320/0606G09G2320/0673G09G2320/08H04N5/202H04N9/3182
    • An image display apparatus of the present invention includes: a picture display unit that forms and displays an optical image based on a video signal; a gamma adjustment image display unit that displays a gamma adjustment image containing input/output characteristics of a signal level of the video signal in the displayed optical image; an adjustment operation unit that changes the displayed input/output characteristics on the image; and an input/output characteristics setting unit that sets input/output characteristics of the signal level of the video signal in accordance with the input/output characteristics changed on the image. The adjustment operation unit includes a point selecting part that selects an adjustment point desired to be changed in the input/output characteristics displayed in the image and a level changing part that is capable of changing both of an input level and an output level of the selected adjustment point. Because both of an input signal level and an optical output level can be adjusted, a user can make gamma adjustment easily, freely, and in detail.
    • 本发明的图像显示装置包括:图像显示单元,其基于视频信号形成并显示光学图像; 伽马调整图像显示单元,显示包含所显示的光学图像中的视频信号的信号电平的输入/输出特性的伽马调整图像; 调整操作单元,其改变图像上显示的输入/输出特性; 以及输入/输出特性设置单元,其根据在图像上改变的输入/输出特性来设置视频信号的信号电平的输入/输出特性。 调整操作单元包括:点选择部,其选择期望在图像中显示的输入/输出特性中改变的调整点;以及电平改变部,其能够改变所选择的输入电平和输出电平 调整点 由于可以调整输入信号电平和光输出电平两者,所以用户可以容易地,自由地,详细地进行伽马调整。