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公开(公告)号：US20050013503A1
公开(公告)日：2005-01-20
申请号：US10891088
申请日：2004-07-15
申请人： Yung-jun Park , Jae-hwan Oh , Hyun Kang , Seung-joon Yang
发明人： Yung-jun Park , Jae-hwan Oh , Hyun Kang , Seung-joon Yang
IPC分类号： G06T5/00 , G06K9/00 , G06K9/40 , G06T5/40 , G09G3/20 , G09G3/36 , G09G5/00 , G09G5/36 , H04N1/407 , H04N5/20 , H04N5/57
CPC分类号： G09G5/10 , G06T5/009 , G06T2207/20076 , G09G3/20 , G09G2320/0626 , G09G2320/066 , G09G2360/16
摘要： An image enhancing apparatus and method in which a PDF calculation unit calculates a probability density function according to a distribution of a luminance value with respect to each pixel of an input image. An average brightness calculation unit calculates average brightness of the input image based on the probability density function and an overflow threshold adaptive to the average brightness is calculated. A BUBO unit calculates a probability density function of which a distribution is adjusted, based on the overflow threshold and a predetermined underflow threshold and a cumulative distribution function is calculated with respect to the adjusted probability density function. A CDF compensating unit compensates for an influence that the BUBO unit has on the cumulative distribution function and a mapping unit uses the compensated cumulative distribution function as a mapping function, and adjusts and outputs the luminance value with respect to each pixel of the input image.
摘要翻译： 一种图像增强装置和方法，其中，PDF计算单元根据关于输入图像的每个像素的亮度值的分布来计算概率密度函数。 平均亮度计算单元基于概率密度函数计算输入图像的平均亮度，并且计算适合于平均亮度的溢出阈值。 BUBO单元基于溢出阈值和预定下溢阈值计算调整分布的概率密度函数，并且相对于调整后的概率密度函数计算累积分布函数。 CDF补偿单元补偿BUBO单元对累积分布函数的影响，并且映射单元使用经补偿的累积分布函数作为映射函数，并且调整并输出关于输入图像的每个像素的亮度值。
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公开(公告)号：US07359573B2
公开(公告)日：2008-04-15
申请号：US10699658
申请日：2003-11-04
申请人： Yung-jun Park , Jae-hwan Oh , Hyun Kang , Seung-joon Yang
发明人： Yung-jun Park , Jae-hwan Oh , Hyun Kang , Seung-joon Yang
摘要： A contrast compensation apparatus and a method thereof utilize a simplified hardware structure and a low contrast distortion. The contrast compensation apparatus includes a pixel value detection unit to detect a distribution of pixel values of respective pixels of an input image signal, a pixel value limit unit having pre-set luminance limit values and re-configuring the distribution of the pixel values of the respective pixels based on the pre-set luminance limit values, and a mapping unit to set luminance for the respective pixels based on a cumulative distribution function with respect to the re-configured pixel values. When certain portions of an image are rendered very bright or dark, the phenomenon in which the entire image becomes abruptly bright or dark is reduced. Further, the contrast compensation apparatus uses the minimum number of multipliers, adders, and subtractors only, thus having an advantage of simplified structure and using less electric power.
摘要翻译： 对比度补偿装置及其方法利用简化的硬件结构和低对比度失真。 对比度补偿装置包括：像素值检测单元，用于检测输入图像信号的各个像素的像素值的分布，具有预设亮度极限值的像素值限制单元，以及重新配置像素值的像素值的分布; 基于预设亮度极限值的各个像素，以及基于相对于重新配置的像素值的累积分布函数来设置各个像素的亮度的映射单元。 当图像的某些部分变得非常亮或暗时，整个图像变得突然亮或暗的现象减少。 此外，对比度补偿装置仅使用最小数量的乘法器，加法器和减法器，因此具有简化结构和使用较少电功率的优点。
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公开(公告)号：US07203375B2
公开(公告)日：2007-04-10
申请号：US10614793
申请日：2003-07-09
申请人： Yung-jun Park , Jae-hwan Oh
发明人： Yung-jun Park , Jae-hwan Oh
IPC分类号： G06K9/36 , G06K9/38 , G06K9/46 , G06K9/40 , G06K9/32 , G06K15/00 , H04N7/12 , H04N11/02 , H04N11/04 , H04N1/40 , G06T5/00 , H04B1/66 , G06K9/48 , G06K9/60
摘要： A quantization error compensation includes a dividing unit to divide an input current image signal into a first high-frequency signal and a low-frequency signal; a changing unit to replace bits of the first high-frequency signal with a predetermined signal to output a second high-frequency signal; an adding unit to add the low-frequency signal and the second high-frequency signal to create a composite signal; a quantization unit to cut n number of bits of the composite signal and to output the cut composite signal and the n number of bit signal; an equalizing unit to output a brightness equalizing value of the cut composite signal; a calculating unit to calculate a compensation value using the n number of the bit signal and a difference between brightness equalizing values with respect to a current and next brightness levels; and a compensation unit to add the compensation and the current brightness equalizing values.
摘要翻译： 量化误差补偿包括将输入的当前图像信号分割为第一高频信号和低频信号的分割单元; 改变单元，用预定信号替换第一高频信号的位，以输出第二高频信号; 添加单元，用于添加低频信号和第二高频信号以产生复合信号; 量化单元，用于切断复合信号的n个比特，并输出切割复合信号和n个比特信号; 均衡单元，输出所切割的复合信号的亮度均衡值; 计算单元，使用n个位信号来计算补偿值，并且相对于当前亮度和下一个亮度级别计算亮度均衡值之间的差; 以及补偿单元来补偿补偿和当前亮度均衡值。
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公开(公告)号：US08482706B2
公开(公告)日：2013-07-09
申请号：US13601361
申请日：2012-08-31
申请人： Jun-ho Jung , Yung-jun Park , Jun-ho Sung , Tae-hyeun Ha , Jung-jin Park
发明人： Jun-ho Jung , Yung-jun Park , Jun-ho Sung , Tae-hyeun Ha , Jung-jin Park
IPC分类号： G02F1/1335
CPC分类号： H04N13/398 , H04N13/341
摘要： A liquid crystal display includes: a pair of liquid crystal shutter glasses; a liquid crystal panel which alternately displays a left image and a right image formed in a predetermined scanning direction according to a predetermined scanning cycle; a glasses controller which outputs a control signal to open and close a left glass and a right glass of the liquid crystal shutter glasses synchronizing with the scanning cycle; a light source unit which supplies light to the liquid crystal panel; and a light source driver which supplies driving power to the light source unit to emit light to the liquid crystal panel in the scanning direction posterior to the left and right images.
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公开(公告)号：US07626340B2
公开(公告)日：2009-12-01
申请号：US11442389
申请日：2006-05-30
申请人： Jeong-il Kang , Sang-hoon Lee , Kyoung-geun Lee , Yung-jun Park
发明人： Jeong-il Kang , Sang-hoon Lee , Kyoung-geun Lee , Yung-jun Park
IPC分类号： H05B37/00
CPC分类号： H05B33/0815 , G09G3/14 , G09G3/2014 , G09G3/3406 , G09G2320/0233 , G09G2330/02
摘要： The present invention relates to a display apparatus comprising a light emitting element supplying light, and a switch to switch on and off power, which is supplied to the light emitting element. A comparing unit compares a predetermined first reference voltage and an output voltage which is proportional to a current applied to the light emitting element. A controller compares a comparison voltage output, which is a comparison result of the comparing unit and a predetermined second reference voltage, in order to control the switch to be switched on and off. Accordingly, the present invention provides a display apparatus and control method which precisely controls a size of a current applied to a light emitting element.
摘要翻译： 本发明涉及包含提供光的发光元件的显示装置和提供给发光元件的开关，以接通和断开电源。 比较单元将预定的第一参考电压和与施加到发光元件的电流成比例的输出电压进行比较。 控制器将作为比较单元的比较结果的比较电压输出与预定的第二参考电压进行比较，以便控制开关的接通和断开。 因此，本发明提供了精确地控制施加到发光元件的电流的尺寸的显示装置和控制方法。
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公开(公告)号：US20080303963A1
公开(公告)日：2008-12-11
申请号：US12133381
申请日：2008-06-05
申请人： Jun-ho Jung , Yung-jun Park , Jun-ho Sung , Tae-hyeun Ha , Jung-jin Park
发明人： Jun-ho Jung , Yung-jun Park , Jun-ho Sung , Tae-hyeun Ha , Jung-jin Park
IPC分类号： H04N13/00
CPC分类号： H04N13/398 , H04N13/341
摘要： A liquid crystal display includes: a pair of liquid crystal shutter glasses; a liquid crystal panel which alternately displays a left image and a right image formed in a predetermined scanning direction according to a predetermined scanning cycle; a glasses controller which outputs a control signal to open and close a left glass and a right glass of the liquid crystal shutter glasses synchronizing with the scanning cycle; a light source unit which supplies light to the liquid crystal panel; and a light source driver which supplies driving power to the light source unit to emit light to the liquid crystal panel in the scanning direction posterior to the left and right images.
摘要翻译： 液晶显示器包括：一对液晶快门眼镜; 根据预定的扫描周期交替显示以预定的扫描方向形成的左图像和右图像的液晶面板; 输出与扫描周期同步地打开和关闭液晶快门眼镜的左玻璃和右玻璃板的控制信号的眼镜控制器; 光源单元，其向所述液晶面板供给光; 以及光源驱动器，其向所述光源单元提供驱动电力，以在左右图像后方的扫描方向向所述液晶面板发光。
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公开(公告)号：US20080273140A1
公开(公告)日：2008-11-06
申请号：US11954290
申请日：2007-12-12
申请人： Jeong-il KANG , Sang-hoon Lee , Yung-jun Park , Su-gun Kim , Ki-bum Seong
发明人： Jeong-il KANG , Sang-hoon Lee , Yung-jun Park , Su-gun Kim , Ki-bum Seong
IPC分类号： G02F1/1335
CPC分类号： G09G3/342 , G09G3/3406 , G09G2310/0237 , G09G2310/024 , G09G2320/0261 , H05B41/2824 , H05B41/2881 , H05B41/3928 , Y02B20/186 , Y02B20/202
摘要： A backlight unit driving apparatus is provided. The backlight unit driving apparatus includes a plurality of flash lamps at a backlight unit to supply light to a liquid crystal panel, supplies voltage necessary for discharge, and supplies a discharge initiating voltage so that the flash lamps can emit lights in a sequential order. Accordingly, motion picture characteristics improve, and good screen brightness is maintained.
摘要翻译： 提供背光单元驱动装置。 背光单元驱动装置包括在背光单元处的多个闪光灯，以向液晶面板提供光，提供放电所需的电压，并且提供放电启动电压，使得闪光灯可以按顺序发光。 因此，电影特性提高，保持良好的屏幕亮度。
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公开(公告)号：US08619102B2
公开(公告)日：2013-12-31
申请号：US12016245
申请日：2008-01-18
申请人： Han Feng Chen , Yung-jun Park , Jun-ho Sung , Hoon Choi , Jun-ho Jung
发明人： Han Feng Chen , Yung-jun Park , Jun-ho Sung , Hoon Choi , Jun-ho Jung
CPC分类号： G09G3/2044 , G09G3/3426 , G09G2320/0233 , G09G2320/0238 , G09G2320/0247 , G09G2320/0261 , G09G2320/066 , G09G2320/0673 , G09G2360/16
摘要： A display apparatus and a method for adjusting brightness thereof are provided. The display apparatus includes a panel unit which displays a video signal, a light emitting unit which provides the panel unit with a ray of light and causes the video signal to be visualized, a light emission control unit which controls the light emitting unit so that the ray of light is provided to each of local areas of the panel unit, and a panel control unit which compensates pixels of the video signal in each of local areas, to remove an artifact which is generated due to the ray of light provided to local areas of the panel unit. Because brightness of a screen is adjusted in each of local areas, contrast ratio is enhanced, and improved image quality is provided.
摘要翻译： 提供了一种用于调节亮度的显示装置和方法。 显示装置包括显示视频信号的面板单元，向面板单元提供光线并使视频信号可视化的发光单元，控制发光单元的发光控制单元， 光线被提供给面板单元的每个局部区域，以及面板控制单元，其补偿每个局部区域中的视频信号的像素，以去除由于提供给局部区域的光线而产生的伪像 的面板单元。 由于在每个局部区域中调节屏幕的亮度，因此提高了对比度，并且提供了改进的图像质量。
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公开(公告)号：US08274470B2
公开(公告)日：2012-09-25
申请号：US11866427
申请日：2007-10-03
申请人： Ki-bum Seong , Jun-ho Sung , Yung-jun Park , Jeong-il Kang , Su-gun Kim , Hyung-rae Kim
发明人： Ki-bum Seong , Jun-ho Sung , Yung-jun Park , Jeong-il Kang , Su-gun Kim , Hyung-rae Kim
IPC分类号： G09G3/36
CPC分类号： G09G3/3426 , G09G3/2014 , G09G2310/024 , G09G2320/0247 , G09G2320/0261
摘要： A display apparatus includes: a display panel; a light source unit which comprises a light source and has a plurality of division areas which are separated and independently driven each other, and is located at the back of the display panel; a drive unit which supplies drive power for the light source unit; and a light source controller which controls the drive unit so that the drive power can be supplied sequentially to the division areas which are divided in a first direction, in synchronization with a scanning period for which one frame of an image signal is displayed, and a lighting period of the division areas can be changed according to the kind of the image signal which is displayed on the display panel.
摘要翻译： 一种显示装置，包括：显示面板; 光源单元，其包括光源并且具有彼此分离并独立驱动的多个划分区域，并且位于显示面板的背面; 提供光源单元的驱动电力的驱动单元; 以及光源控制器，其控制所述驱动单元，使得可以与显示图像信号的一帧的扫描周期同步地向与沿第一方向划分的划分区域顺序地提供驱动功率;以及 可以根据在显示面板上显示的图像信号的种类来改变分割区域的点亮周期。
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公开(公告)号：US20070063937A1
公开(公告)日：2007-03-22
申请号：US11503280
申请日：2006-08-14
申请人： Jeong-il Kang , Sang-hoon Lee , Chang-wan Hong , Yung-jun Park
发明人： Jeong-il Kang , Sang-hoon Lee , Chang-wan Hong , Yung-jun Park
IPC分类号： G09G3/32
CPC分类号： H05B33/086 , H05B33/0818 , Y02B20/346
摘要： A display device and method for supplying stable electric power for a light source are provided. A display device comprises a plurality of light sources, a variable electrical power supply which supplies electric power for the light sources, a switching unit which is connected in series with the light sources, and a controller which controls the variable electrical power supply so that voltage across both ends of the switching unit is consistently held in relation to voltage across both ends of the light sources.
摘要翻译： 提供了一种用于为光源提供稳定电力的显示装置和方法。 显示装置包括多个光源，为光源提供电力的可变电源，与光源串联连接的切换单元，以及控制可变电源使得电压 跨越开关单元两端的电压一贯地保持在与光源两端的电压方面。
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