公开(公告)号：US08952881B2

公开(公告)日：2015-02-10

申请号：US13071586

申请日：2011-03-25

申请人： Ryosuke Nonaka ,  Masahiro Baba ,  Yuma Sano

发明人： Ryosuke Nonaka ,  Masahiro Baba ,  Yuma Sano

IPC分类号： G09G3/36 ,  G09G3/10 ,  G09G3/34

CPC分类号： G09G3/342 ,  G09G3/3413 ,  G09G3/3426 ,  G09G3/3648 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2320/0646 ,  G09G2320/066 ,  G09G2330/021 ,  G09G2360/16

摘要： According to one embodiment, an image display apparatus includes a liquid crystal panel, a backlight, a luminance distribution calculation unit, an error calculation unit, and an emission intensity update unit. The backlight includes a plurality of light sources which emit light. The luminance distribution calculation unit calculates a predicted value for an intensity distribution of light entering the liquid crystal panel if each of the light sources is lit with an emission intensity. The error calculation unit obtains a brightness of a display image which is realized if the each of the light sources is lit with the emission intensity, and the error calculation unit calculates an error between the obtained brightness and an ideal brightness of the display image corresponding to the input video signal. The emission intensity update unit updates the emission intensity of the each of the light sources to reduce the error.

摘要翻译： 根据一个实施例，图像显示装置包括液晶面板，背光源，亮度分布计算单元，误差计算单元和发光强度更新单元。 背光源包括多个发光的光源。 如果每个光源以发光强度点亮，则亮度分布计算单元计算进入液晶面板的光的强度分布的预测值。 误差计算单元获得如果每个光源以发光强度点亮所实现的显示图像的亮度，并且误差计算单元计算所获得的亮度和对应于所得到的显示图像的理想亮度之间的误差 输入视频信号。 发光强度更新单元更新每个光源的发射强度以减少误差。

公开(公告)号：US08791967B2

公开(公告)日：2014-07-29

申请号：US13070986

申请日：2011-03-24

申请人： Masahiro Baba ,  Ryosuke Nonaka ,  Yuma Sano

发明人： Masahiro Baba ,  Ryosuke Nonaka ,  Yuma Sano

IPC分类号： G09G5/10

CPC分类号： G09G3/3413 ,  G09G3/3426 ,  G09G2320/0285 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2320/0666

摘要： According to one embodiment, a display apparatus includes a light modulating unit, a light source unit, a luminance setting unit, a luminance distribution calculating unit, a signal level converting unit, and a control unit. The light source unit includes a basic light source and an extended light source illuminating each of divisional areas into which the display area tentatively divided. The basic light source emits white light with first emission peak wavelengths. The extended light source emits light with a second emission peak wavelength being different from the first emission peak wavelengths and being within a range between shortest and longest wavelengths of the first emission peak wavelengths. The control unit is configured to generate a control signal controlling the basic light source and the extended light source so as to provide a period in which the basic light source and the extended light source simultaneously emit light.

摘要翻译： 根据一个实施例，显示装置包括光调制单元，光源单元，亮度设置单元，亮度分布计算单元，信号电平转换单元和控制单元。 光源单元包括基本光源和照亮显示区域暂时划分的各个区域的延伸光源。 基本光源发出具有第一发射峰波长的白光。 扩展光源发射具有与第一发射峰值波长不同的第二发射峰值波长的光，并且在第一发射峰值波长的最短和最长波长之间的范围内。 控制单元被配置为产生控制基本光源和扩展光源的控制信号，以便提供基本光源和扩展光源同时发光的时段。

公开(公告)号：US08525823B2

公开(公告)日：2013-09-03

申请号：US13235959

申请日：2011-09-19

申请人： Yuma Sano ,  Ryosuke Nonaka ,  Masahiro Baba

发明人： Yuma Sano ,  Ryosuke Nonaka ,  Masahiro Baba

IPC分类号： G06F3/038 ,  G09G5/10

CPC分类号： G09G3/3413 ,  G09G3/3426 ,  G09G3/3611 ,  G09G5/04 ,  G09G2320/0666 ,  G09G2360/16

摘要： According to one embodiment, an image display device has a liquid crystal panel, a backlight, an intensity setting unit, a presumption unit, a signal correction unit, an error calculation unit and a control unit. The intensity setting unit sets intensities of the light sources, respectively. The presumption unit presumes color information based on intensity information representing the intensities. The signal correction unit corrects an input video signal according to the color information, and obtains a corrected video signal. The error calculation unit presumes a display image from the corrected video signal and the input video signal, and calculates display errors between the presumed display image and an input image corresponding to the input video signal. The control unit controls sets the intensities of the light sources as the emission intensities of the backlight so that the display errors obtained from the error calculation unit can be minimum.

摘要翻译： 根据一个实施例，图像显示装置具有液晶面板，背光源，亮度设定单元，推测单元，信号校正单元，误差计算单元和控制单元。 强度设定单元分别设定光源的强度。 推测单元基于表示强度的强度信息来假定颜色信息。 信号校正单元根据颜色信息校正输入视频信号，并获得校正的视频信号。 误差计算单元假定来自校正视频信号和输入视频信号的显示图像，并且计算推定的显示图像与对应于输入视频信号的输入图像之间的显示误差。 控制单元控制将光源的强度设置为背光的发光强度，使得从误差计算单元获得的显示误差可以是最小的。

公开(公告)号：US08854295B2

公开(公告)日：2014-10-07

申请号：US12953843

申请日：2010-11-24

申请人： Yuma Sano ,  Ryosuke Nonaka ,  Masahiro Baba

发明人： Yuma Sano ,  Ryosuke Nonaka ,  Masahiro Baba

IPC分类号： G09G3/36 ,  G09G3/34

CPC分类号： G09G3/3611 ,  G09G3/3426 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2360/16

摘要： There is provided a liquid crystal display, including: a backlight having a plurality of light sources; a liquid crystal panel configured to display a video picture in a plurality of illumination regions corresponding to the light sources; an intensity value calculator calculating representative intensity values of the illumination regions based on an input video signal; a weight calculator performing a smoothing process on the representative intensity values by using first weights and to calculate second weights of the illumination regions having values which become larger as smoothed values of the representative intensity values becomes smaller than the representative intensity values; an intensity value corrector correcting the representative intensity values of the illumination regions based on the second weights and performe a smoothing process on corrected intensity values by using the first weights to obtain light source intensity values of the light sources.

摘要翻译： 提供一种液晶显示器，包括：具有多个光源的背光源; 液晶面板，被配置为在对应于所述光源的多个照明区域中显示视频图像; 强度值计算器，基于输入视频信号计算照明区域的代表性强度值; 权重计算器通过使用第一权重对代表强度值进行平滑处理，并且计算具有变大的值的照明区域的第二权重，其中代表强度值的平滑值变得更小，变得小于代表强度值; 强度值校正器，基于第二权重校正照明区域的代表性强度值，并且通过使用第一权重对校正后的强度值执行平滑处理，以获得光源的光源强度值。

公开(公告)号：US20120050352A1

公开(公告)日：2012-03-01

申请号：US13070986

申请日：2011-03-24

申请人： Masahiro BABA ,  Ryosuke Nonaka ,  Yuma Sano

发明人： Masahiro BABA ,  Ryosuke Nonaka ,  Yuma Sano

IPC分类号： G09G5/10

CPC分类号： G09G3/3413 ,  G09G3/3426 ,  G09G2320/0285 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2320/0666

摘要： According to one embodiment, a display apparatus includes a light modulating unit, a light source unit, a luminance setting unit, a luminance distribution calculating unit, a signal level converting unit, and a control unit. The light source unit includes a basic light source and an extended light source illuminating each of divisional areas into which the display area tentatively divided. The basic light source emits white light with first emission peak wavelengths. The extended light source emits light with a second emission peak wavelength being different from the first emission peak wavelengths and being within a range between shortest and longest wavelengths of the first emission peak wavelengths. The control unit is configured to generate a control signal controlling the basic light source and the extended light source so as to provide a period in which the basic light source and the extended light source simultaneously emit light.

摘要翻译： 根据一个实施例，显示装置包括光调制单元，光源单元，亮度设置单元，亮度分布计算单元，信号电平转换单元和控制单元。 光源单元包括基本光源和照亮显示区域暂时划分的各个区域的延伸光源。 基本光源发出具有第一发射峰波长的白光。 扩展光源发射具有与第一发射峰值波长不同的第二发射峰值波长的光，并且在第一发射峰值波长的最短和最长波长之间的范围内。 控制单元被配置为产生控制基本光源和扩展光源的控制信号，以便提供基本光源和扩展光源同时发光的时段。

公开(公告)号：US20110025728A1

公开(公告)日：2011-02-03

申请号：US12877227

申请日：2010-09-08

申请人： Masahiro Baba ,  Ryosuke Nonaka ,  Yuma Sano

发明人： Masahiro Baba ,  Ryosuke Nonaka ,  Yuma Sano

IPC分类号： G09G3/36 ,  G09G5/10

CPC分类号： G09G3/3426 ,  G09G2310/0237 ,  G09G2310/024 ,  G09G2310/08 ,  G09G2320/0261 ,  G09G2320/0633 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2330/021 ,  G09G2360/144 ,  G09G2360/16

摘要： According to one embodiment, an apparatus includes following units. The image display unit includes a light source unit provided with light sources, each source being controlled respectively, and a liquid crystal panel displaying on a display area. The luminance calculation unit calculates a light source luminance of the light source based on a signal level of a divided area into which the display area virtually divided. The luminance distribution calculation unit calculates an entire luminance distribution of the light source unit. The transform unit transforms a signal level of the input image into a transformed image based on the entire luminance distribution. The luminance correction unit calculates a correction coefficient based on an average value or a sum of the light source luminance, and collects each of the light source luminance by the correction coefficient. The controller unit controls the liquid crystal panel and the light source unit.

摘要翻译： 根据一个实施例，一种装置包括以下单元。 图像显示单元包括设置有光源的光源单元，分别控制每个源和在显示区域上显示的液晶面板。 亮度计算单元基于虚拟划分的显示区域的分割区域的信号电平来计算光源的光源亮度。 亮度分布计算单元计算光源单元的全部亮度分布。 变换单元基于整个亮度分布将输入图像的信号电平变换为变换图像。 亮度校正单元基于平均值或光源亮度的总和来计算校正系数，并且通过校正系数来收集每个光源亮度。 控制器单元控制液晶面板和光源单元。

公开(公告)号：US20100149224A1

公开(公告)日：2010-06-17

申请号：US12556610

申请日：2009-09-10

申请人： Masahiro Baba ,  Ryosuke Nonaka ,  Yuma Sano

发明人： Masahiro Baba ,  Ryosuke Nonaka ,  Yuma Sano

IPC分类号： G09G5/10 ,  G09G3/36

CPC分类号： G09G3/3611 ,  G09G3/3413 ,  G09G3/3426 ,  G09G2320/0646 ,  G09G2320/0666 ,  G09G2360/16

摘要： An image processing apparatus has a light source luminance calculating unit which calculates the luminances of the light sources of the plurality of colors of a back light based on an input image, a light source maximum value detecting unit which detects a light source maximum value that is the largest value in the light source luminances of the plurality of colors, a light source luminance correcting unit which corrects the light source luminances to obtain corrected light source luminances so as to reduce the difference among the light source luminances of the plurality of colors if the light source maximum value is smaller than a threshold value, a gradation conversion function calculating unit which calculates a gradation conversion function applied to the input image corresponding to each of the plurality of colors, by using the corrected light source luminance, and a control unit which converts the input image by using the gradation conversion function and outputs the input image to a liquid crystal panel and generates the luminance control signal by using the corrected light source luminance and outputs the luminance control signal to the back light.

摘要翻译： 一种图像处理装置，具有基于输入图像计算背光的多种颜色的光源的亮度的光源亮度计算单元，检测作为输入图像的光源最大值的光源最大值检测单元 多个颜色的光源亮度中的最大值，光源亮度校正单元，其校正光源亮度以获得校正的光源亮度，以便减少多种颜色的光源亮度之间的差异，如果 光源最大值小于阈值;灰度转换函数计算单元，其通过使用校正的光源亮度来计算应用于与多个颜色中的每一个相对应的输入图像的灰度转换功能;以及控制单元， 通过使用灰度转换功能转换输入图像并输出输入图像 并且通过使用校正的光源亮度产生亮度控制信号，并将亮度控制信号输出到背光。

公开(公告)号：US20100238201A1

公开(公告)日：2010-09-23

申请号：US12563507

申请日：2009-09-21

申请人： Ryosuke Nonaka ,  Masahiro Baba ,  Yuma Sano

发明人： Ryosuke Nonaka ,  Masahiro Baba ,  Yuma Sano

IPC分类号： G09G3/36 ,  G09G5/10

CPC分类号： G09G3/3611 ,  G09G3/3406 ,  G09G2320/0646 ,  G09G2320/0673 ,  G09G2360/16

摘要： An image display apparatus for displaying images based on signals of an input image is provided. A backlight emits light. A liquid crystal panel modulates light emitted from the backlight. A emission intensity calculating unit calculates an emission intensity of the backlight such that a center value of a lightness range displayable on the panel defined depending on the emission intensity of the backlight substantially agrees with a center value between maximum and minimum values of lightness of each signal of the input image. A backlight controlling unit controls light emission of the backlight such that the light is emitted with the emission intensity. A signal correcting unit corrects each signal of the input image in accordance with the emission intensity. A liquid crystal controlling unit controls modulation of the liquid crystal panel based upon the corrected signals.

摘要翻译： 提供一种用于基于输入图像的信号显示图像的图像显示装置。 背光发光。 液晶面板调制从背光发出的光。 发光强度计算单元计算背光的发光强度，使得可以根据背光的发光强度限定的面板显示的亮度范围的中心值基本上与每个信号的亮度的最大值和最小值之间的中心值一致 的输入图像。 背光控制单元控制背光的发光，使得以发光强度发光。 信号校正单元根据发射强度校正输入图像的每个信号。 液晶控制单元基于校正信号来控制液晶面板的调制。

公开(公告)号：US08866728B2

公开(公告)日：2014-10-21

申请号：US13218641

申请日：2011-08-26

申请人： Yuma Sano ,  Ryosuke Nonaka ,  Masahiro Baba

发明人： Yuma Sano ,  Ryosuke Nonaka ,  Masahiro Baba

IPC分类号： G09G3/36 ,  G09G3/34

CPC分类号： G09G3/3611 ,  G09G3/3426 ,  G09G2320/0276 ,  G09G2320/0646 ,  G09G2360/16

摘要： The liquid crystal panel displays a video in a display area by modulating light from the backlight including a plurality of light sources. The luminance value calculator calculates light source luminance values of the light sources based on an input video signal including signal values of pixels. The luminance distribution calculator calculates luminance distribution of light in illumination areas obtained by tentatively dividing the display area if the light sources emit light according to the light source luminance values. The representative value calculator calculates, based on the input video signal, a representative luminance value in each of divided areas obtained by dividing the display area. The signal corrector corrects the input video signal based on the luminance distribution according to a difference between a maximum value of the representative luminance values and an average value of the representative luminance values.

摘要翻译： 液晶面板通过调制来自包括多个光源的背光的光而在显示区域中显示视频。 亮度值计算器基于包括像素的信号值的输入视频信号来计算光源的光源亮度值。 如果光源根据光源亮度值发光，则亮度分布计算器计算通过暂时划分显示区域而获得的照明区域中的光的亮度分布。 代表值计算器基于输入视频信号计算通过划分显示区域而获得的每个分割区域中的代表亮度值。 信号校正器根据代表性亮度值的最大值和代表亮度值的平均值之间的差，基于亮度分布校正输入视频信号。

公开(公告)号：US08217968B2

公开(公告)日：2012-07-10

申请号：US12560608

申请日：2009-09-16

申请人： Yuma Sano ,  Ryosuke Nonaka ,  Masahiro Baba

发明人： Yuma Sano ,  Ryosuke Nonaka ,  Masahiro Baba

IPC分类号： G09G5/10

CPC分类号： G09G3/3413 ,  G09G2320/0271 ,  G09G2360/145 ,  G09G2360/16

摘要： An image display device 100 is an image display device capable of controlling the luminance of a backlight. The image display device 100 includes: a backlight luminance set value estimator which calculates the luminance set value of a backlight 101 based on an input image; and a signal corrector which corrects the transmittance of a liquid crystal in accordance with the luminance distribution of backlight emitted to the liquid crystal panel. The image display device 100 is characterized in that a signal corrector 107 corrects the transmittance of the liquid crystal while retaining the proportion of a gray-scale level value of each of RGB subpixels of the input image.

摘要翻译： 图像显示装置100是能够控制背光的亮度的图像显示装置。 图像显示装置100包括：背光源亮度设定值估计器，其基于输入图像计算背光源101的亮度设定值; 以及信号校正器，其根据发射到液晶面板的背光的亮度分布来校正液晶的透射率。 图像显示装置100的特征在于，信号校正器107校正液晶的透射率，同时保持输入图像的每个RGB子像素的灰度级电平值的比例。