Video display device and television receiving device
    1.
    发明授权
    Video display device and television receiving device 有权
    视频显示设备和电视接收设备

    公开(公告)号:US09350961B2

    公开(公告)日:2016-05-24

    申请号:US14373367

    申请日:2012-07-19

    Abstract: 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.

    Abstract translation: 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。

    Video display device that stretches a video signal and a signal of the light source and television receiving device
    2.
    发明授权
    Video display device that stretches a video signal and a signal of the light source and television receiving device 有权
    视频显示装置,其延伸视频信号和光源和电视接收装置的信号

    公开(公告)号:US08964124B2

    公开(公告)日:2015-02-24

    申请号:US14357231

    申请日:2012-06-27

    Abstract: A video display device increases a feeling of brightness and expresses a video with high contrast by detecting a part of a video signal that emits light, enhancing the display luminance of the light-emitting part, and displaying the part. A light emission detection portion (1) uses a prescribed feature quantity related to the brightness of an input video signal, predetermines the light emission quantity for the video signal on the basis of the relationship with the feature quantity, and detects the light emission quantity for each input video signal frame from the feature quantity. A backlight luminance stretch portion (3) stretches the light source luminance of the backlight according to the light emission quantity detected. A video signal luminance stretch portion (6) stretches the video signal according to the light emission quantity or the luminance distribution of the input video signal.

    Abstract translation: 视频显示装置通过检测发出光的视频信号的一部分,增强发光部分的显示亮度和显示该部分,增加了亮度的感觉并且表现出具有高对比度的视频。 发光检测部(1)使用与输入视频信号的亮度相关的规定特征量,根据与特征量的关系来预先确定视频信号的发光量,并且检测发光量 每个输入视频信号帧从特征量。 背光源亮度伸展部(3)根据检测出的发光量使背光源的光源亮度伸长。 视频信号亮度延伸部分(6)根据输入视频信号的发光量或亮度分布拉伸视频信号。

    Video display device
    3.
    发明授权
    Video display device 有权
    视频显示设备

    公开(公告)号:US08625031B2

    公开(公告)日:2014-01-07

    申请号:US13978194

    申请日:2011-11-29

    CPC classification number: H04N5/21 G09G5/02 G09G2320/0271 G09G2360/16

    Abstract: 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.

    Abstract translation: 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)。

    Liquid crystal display apparatus
    4.
    发明授权
    Liquid crystal display apparatus 有权
    液晶显示装置

    公开(公告)号:US08547404B2

    公开(公告)日:2013-10-01

    申请号:US11792056

    申请日:2006-10-16

    Abstract: A liquid crystal display apparatus enables image display with optimum quality corresponding to the genre of an image to be displayed. The liquid crystal display apparatus controls the emission luminance of a backlight according to the APL of an image signal measured at an APL measuring portion 14. Upon emission luminance control, the display apparatus sets the follow performance of a change of the backlight emission luminance in following a change in a characteristic quantity of the image signal according to a genre so that the display image can be viewed without an odd feeling. Specifically, the APL of the image signal measured at the APL measuring portion 14 is put into a filter 15, and the rate of a change in the APL on the time axis is controlled through weighted averaging to control the follow performance of the emission luminance control on the backlight. At this time, the genre of image to be displayed is determined, and a constant used for weighted averaging on the filter 15 is changed according to the determined genre to optimize display quality for each genre.

    Abstract translation: 液晶显示装置使得能够以与要显示的图像的类型对应的最佳质量的图像显示。 液晶显示装置根据在APL测量部分14测量的图像信号的APL来控制背光的发光亮度。在发光亮度控制时,显示装置设置随后的背光发光亮度变化的跟随性能 根据类型的图像信号的特征量的变化,使得可以没有奇怪的感觉来观看显示图像。 具体地说,将在APL测量部分14测量的图像信号的APL放入滤波器15中,通过加权平均来控制APL在时间轴上的变化率,以控制发射亮度控制的跟随性能 在背光上。 此时,确定要显示的图像的类型,并且根据确定的类型改变用于滤波器15上的加权平均的常数,以优化每种类型的显示质量。

    Liquid crystal display device, liquid crystal display control method, program thereof, and recording medium

    公开(公告)号:US20060176262A1

    公开(公告)日:2006-08-10

    申请号:US10541093

    申请日:2004-04-08

    Abstract: When a video signal type detecting section detects an interlace signal, an I/P conversion section subjects the interlace signal to I/P conversion, and the signal is supplied to an enhancing conversion section. In the enhancing conversion section, the image data is subjected to enhancing conversion, so that optical characteristics of a liquid crystal display panel is corrected. On this occasion, the degradation of the quality of a reproduced image due to the enhancement of unwanted changes (false signal), by causing the degree of the enhancing conversion of the image data having been subjected to the I/P conversion to be lower than the degree of the enhanced conversion of the image data inputted as the progressive signal. As a result, the enhancing conversion of the input image data is performed in such a manner as to correct the optical response characteristics of the liquid crystal panel, so that it is possible to restrain the enhancement of unwanted changes occurring at the outline of the image on the occasion of subjecting the interlace image signal to the I/P conversion, and hence high-quality image reproduction is realized.

    VIDEO DISPLAY DEVICE AND TELEVISION RECEIVING DEVICE
    8.
    发明申请
    VIDEO DISPLAY DEVICE AND TELEVISION RECEIVING DEVICE 有权
    视频显示设备和电视接收设备

    公开(公告)号:US20150070376A1

    公开(公告)日:2015-03-12

    申请号:US14371777

    申请日:2012-07-05

    Abstract: Areas of a video signal that represent light emission are detected, the luminance levels at which said light emission areas are displayed are enhanced, emphasizing said areas, and said luminance stretching is controlled in accordance with the brightness of the surrounding environment, thereby increasing the resulting sense of brightness and improving the appearance of the video. A light emission detecting portion (12) counts pixels in order to generate a histogram of a prescribed feature quantity of an input video signal and identifies areas that fall within a prescribed range at the upper end of said histogram as being light emission areas. On the basis of a brightness-related index computed from the input video signal on the basis of prescribed conditions, an area-active-control/luminance-stretching portion (14) performs luminance stretching, increasing the luminance of a backlight portion (16) and reducing the luminance of non-light emission areas of the video signal, i.e. the areas other than the light emitting areas. When doing so, the area-active-control/luminance-stretching portion (14) switches between control curves, which define the relationship between the brightness-related index and the amount of stretching, in accordance with the brightness of the surroundings of the device as detected by a brightness detection portion (19).

    Abstract translation: 检测表示发光的视频信号的区域,增强显示所述发光区域的亮度水平,强调所述区域,并且根据周围环境的亮度来控制所述亮度拉伸,从而增加所得到的 明亮的感觉和改善视频的外观。 发光检测部分(12)对像素进行计数,以便产生输入视频信号的规定特征量的直方图,并且将位于所述直方图的上端的规定范围内的区域识别为发光区域。 基于根据规定条件从输入视频信号计算的亮度相关指标,区域主动控制/亮度拉伸部分(14)执行亮度拉伸,增加背光部分(16)的亮度, 并且降低视频信号的非发光区域的亮度,即发光区域以外的区域。 当这样做时,区域主动控制/亮度拉伸部分(14)根据设备的周围环境的亮度来切换限定亮度相关指数和拉伸量之间的关系的控制曲线 如由亮度检测部分(19)检测的。

    VIDEO DISPLAY DEVICE AND TELEVISION RECEIVING DEVICE
    9.
    发明申请
    VIDEO DISPLAY DEVICE AND TELEVISION RECEIVING DEVICE 审中-公开
    视频显示设备和电视接收设备

    公开(公告)号:US20140368527A1

    公开(公告)日:2014-12-18

    申请号:US14373735

    申请日:2012-07-05

    Abstract: Areas of a video signal that represent light emission are detected, the luminance levels at which said light emission areas are displayed are enhanced, emphasizing said areas, and said luminance stretching is controlled in accordance with a set image quality mode, thereby producing consistently natural, high-quality visual imagery. A light emission detecting portion (12) counts pixels in order to generate a histogram of a prescribed feature quantity of an input video signal and identifies areas that fall within a prescribed range at the upper end of said histogram as being light emission areas. On the basis of a brightness-related index computed from the input video signal on the basis of prescribed conditions, an area-active-control/luminance-stretching portion (14) performs luminance stretching, increasing the luminance of a backlight portion (16) and reducing the luminance of non-light emission areas of the video signal, i.e. the areas other than the light emitting areas. When doing so, the area-active-control/luminance-stretching portion (14) switches between control curves, which define the relationship between the brightness-related index and the amount of stretching, in accordance with an image quality mode set by an image quality mode setting portion (19).

    Abstract translation: 检测出表示发光的视频信号的区域,增强显示所述发光区域的亮度水平,强调所述区域,并且根据设定的图像质量模式控制所述亮度拉伸,从而产生一致的自然, 高品质的视觉图像。 发光检测部分(12)对像素进行计数,以便产生输入视频信号的规定特征量的直方图,并且将位于所述直方图的上端的规定范围内的区域识别为发光区域。 基于根据规定条件从输入视频信号计算的亮度相关指标,区域主动控制/亮度拉伸部分(14)执行亮度拉伸,增加背光部分(16)的亮度, 并且降低视频信号的非发光区域的亮度,即发光区域以外的区域。 当这样做时,区域主动控制/亮度拉伸部分(14)根据由图像设置的图像质量模式在限定亮度相关指数和拉伸量之间的关系的控制曲线之间切换 质量模式设定部(19)。

    VIDEO DISPLAY DEVICE AND TELEVISION RECEIVING DEVICE
    10.
    发明申请
    VIDEO DISPLAY DEVICE AND TELEVISION RECEIVING DEVICE 有权
    视频显示设备和电视接收设备

    公开(公告)号:US20140300819A1

    公开(公告)日:2014-10-09

    申请号:US14357231

    申请日:2012-06-27

    Abstract: The purpose of the present invention is to increase a feeling of brightness and express a video with high contrast by detecting a part of a video signal that emits light, enhancing the display luminance of the light-emitting part, and displaying said part. A light emission detection portion (1) uses a prescribed feature quantity related to the brightness of an input video signal, predetermines the light emission quantity for the video signal on the basis of the relationship with the feature quantity, and detects the light emission quantity for each input video signal frame from the feature quantity. A backlight luminance stretch portion (3) stretches the light source luminance of the backlight according to the light emission quantity detected. A video signal luminance stretch portion (6) stretches the video signal according to the light emission quantity or the luminance distribution of the input video signal. A mapping portion (7) carries out mapping of the video signal by reducing the luminance of the parts without light emission. Therefore, the part of the input video signal that can be seen as emitting light is enhanced by luminance stretching of the backlight and stretching of the video signal.

    Abstract translation: 本发明的目的是通过检测发出光的视频信号的一部分,增强发光部分的显示亮度和显示所述部分来增加亮度感并表现具有高对比度的视频。 发光检测部(1)使用与输入视频信号的亮度相关的规定特征量,根据与特征量的关系来预先确定视频信号的发光量,并且检测发光量 每个输入视频信号帧从特征量。 背光源亮度伸展部(3)根据检测出的发光量使背光源的光源亮度伸长。 视频信号亮度延伸部分(6)根据输入视频信号的发光量或亮度分布拉伸视频信号。 映射部分(7)通过减少部分的亮度而不发光来执行视频信号的映射。 因此,可以看作发光的输入视频信号的部分通过背光的亮度拉伸和视频信号的拉伸来增强。

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