公开(公告)号：US20110141004A1

公开(公告)日：2011-06-16

申请号：US12836372

申请日：2010-07-14

申请人： Kyung-Joon Kwon ,  Dong-Woo Kim ,  Chang-Kyun Park

发明人： Kyung-Joon Kwon ,  Dong-Woo Kim ,  Chang-Kyun Park

IPC分类号： G09G3/36

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

摘要： A driving method for local dimming of a Liquid Crystal Display (LCD) device and an apparatus using the same are disclosed. The driving method includes assigning a first block index to each of a plurality of blocks into which backlight unit is divided, detecting a connection order of the blocks in the backlight unit, arranging the first block indexes according to the block connection order, storing first block index ordering information that specifies the arranged first block indexes, retrieving the stored first block index ordering information, generating second block index information that specifies second block indexes corresponding to the first block indexes of the backlight unit, determining a local dimming value for each block by analyzing input data on a block basis according to the second block index information, rearranging the local dimming values arranged based on the second block index information according to the first block index ordering information, and driving the plurality of blocks respectively using the rearranged local dimming values of the plurality of blocks.

摘要翻译： 公开了一种用于液晶显示器（LCD）器件的局部调光的驱动方法及其使用方法。 所述驱动方法包括对背光单元划分成的多个块中的每一个分配第一块索引，检测背光单元中的块的连接顺序，根据块连接顺序排列第一块索引，存储第一块 指定排列的第一块索引的索引排序信息，检索所存储的第一块索引排序信息，生成指定对应于背光单元的第一块索引的第二块索引的第二块索引信息，通过以下方式确定每个块的局部调光值 根据第二块索引信息，以块为基础分析输入数据，根据第一块索引排序信息重新排列基于第二块索引信息排列的局部调光值，并分别使用重新排列的局部调光值驱动多个块 的多个块。

公开(公告)号：US08531384B2

公开(公告)日：2013-09-10

申请号：US12836372

申请日：2010-07-14

申请人： Kyung-Joon Kwon ,  Dong-Woo Kim ,  Chang-Kyun Park

发明人： Kyung-Joon Kwon ,  Dong-Woo Kim ,  Chang-Kyun Park

IPC分类号： G09G3/36

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

摘要： A driving method for local dimming of a Liquid Crystal Display (LCD) device and an apparatus using the same are disclosed. The driving method includes assigning a first block index to each of a plurality of blocks into which backlight unit is divided, detecting a connection order of the blocks in the backlight unit, arranging the first block indexes according to the block connection order, storing first block index ordering information that specifies the arranged first block indexes, retrieving the stored first block index ordering information, generating second block index information that specifies second block indexes corresponding to the first block indexes of the backlight unit, determining a local dimming value for each block by analyzing input data on a block basis according to the second block index information, rearranging the local dimming values arranged based on the second block index information according to the first block index ordering information, and driving the plurality of blocks respectively using the rearranged local dimming values of the plurality of blocks.

摘要翻译： 公开了一种用于液晶显示器（LCD）器件的局部调光的驱动方法及其使用方法。 所述驱动方法包括对背光单元划分成的多个块中的每一个分配第一块索引，检测背光单元中的块的连接顺序，根据块连接顺序排列第一块索引，存储第一块 指定排列的第一块索引的索引排序信息，检索所存储的第一块索引排序信息，生成指定对应于背光单元的第一块索引的第二块索引的第二块索引信息，通过以下方式确定每个块的局部调光值 根据第二块索引信息，以块为基础分析输入数据，根据第一块索引排序信息重新排列基于第二块索引信息排列的局部调光值，并分别使用重新排列的局部调光值驱动多个块 的多个块。

公开(公告)号：US08576159B2

公开(公告)日：2013-11-05

申请号：US12827498

申请日：2010-06-30

申请人： Dae-Ho Cho ,  Kyung-Joon Kwon ,  Hee-Won Ahn ,  Chang-Kyun Park

发明人： Dae-Ho Cho ,  Kyung-Joon Kwon ,  Hee-Won Ahn ,  Chang-Kyun Park

IPC分类号： G09G3/36 ,  G09G5/10

CPC分类号： G09G3/3426 ,  G09G2320/064 ,  G09G2320/0646

摘要： A driving method for local dimming of a Liquid Crystal Display (LCD) device and an apparatus using the same are disclosed. The driving method includes measuring light intensities at a plurality of sampling points by driving a light source of a backlight unit and storing the light intensity measurements as light intensity data of the sampling points in a memory, determining a local dimming value of each block by analyzing input image data on a block basis, detecting a pixel position of current input data, selecting a plurality of sampling points adjacent to the current pixel and the light intensity data of the sampling points from the memory, detecting light intensity data of the current pixel by linearly interpolating the light intensity data of the sampling points individually, calculating a gain value by a light intensity analysis based on the light intensity data of the current pixel and the local dimming value of each block, compensating the current input data using the gain value, and controlling luminance of the backlight unit on a block basis using the local dimming value of each block.

摘要翻译： 公开了一种用于液晶显示器（LCD）器件的局部调光的驱动方法及其使用方法。 驱动方法包括通过驱动背光单元的光源并将光强度测量值作为采样点的光强度数据存储在存储器中来测量多个采样点的光强度，通过分析来确定每个块的局部调光值 以块为基础输入图像数据，检测当前输入数据的像素位置，从存储器中选择与当前像素相邻的多个采样点和采样点的光强数据，检测当前像素的光强度数据，检测当前像素的光强度数据 分别对采样点的光强度数据进行线性内插，通过基于当前像素的光强度数据和每个块的局部调光值的光强度分析来计算增益值，使用增益值补偿当前输入数据， 以及使用每个块的局部调光值在块基础上控制背光单元的亮度。

公开(公告)号：US20110141077A1

公开(公告)日：2011-06-16

申请号：US12827498

申请日：2010-06-30

申请人： Dae-Ho CHO ,  Kyung-Joon Kwon ,  Hee-Won Ahn ,  Chang-Kyun Park

发明人： Dae-Ho CHO ,  Kyung-Joon Kwon ,  Hee-Won Ahn ,  Chang-Kyun Park

IPC分类号： G09G3/36 ,  G09G5/10

CPC分类号： G09G3/3426 ,  G09G2320/064 ,  G09G2320/0646

摘要： A driving method for local dimming of a Liquid Crystal Display (LCD) device and an apparatus using the same are disclosed. The driving method includes measuring light intensities at a plurality of sampling points by driving a light source of a backlight unit and storing the light intensity measurements as light intensity data of the sampling points in a memory, determining a local dimming value of each block by analyzing input image data on a block basis, detecting a pixel position of current input data, selecting a plurality of sampling points adjacent to the current pixel and the light intensity data of the sampling points from the memory, detecting light intensity data of the current pixel by linearly interpolating the light intensity data of the sampling points individually, calculating a gain value by a light intensity analysis based on the light intensity data of the current pixel and the local dimming value of each block, compensating the current input data using the gain value, and controlling luminance of the backlight unit on a block basis using the local dimming value of each block.

摘要翻译： 公开了一种用于液晶显示器（LCD）器件的局部调光的驱动方法及其使用方法。 驱动方法包括通过驱动背光单元的光源并将光强度测量值作为采样点的光强度数据存储在存储器中来测量多个采样点的光强度，通过分析来确定每个块的局部调光值 以块为基础输入图像数据，检测当前输入数据的像素位置，从存储器中选择与当前像素相邻的多个采样点和采样点的光强数据，检测当前像素的光强度数据，检测当前像素的光强度数据 分别对采样点的光强度数据进行线性内插，通过基于当前像素的光强度数据和每个块的局部调光值的光强度分析来计算增益值，使用增益值补偿当前输入数据， 以及使用每个块的局部调光值在块基础上控制背光单元的亮度。

公开(公告)号：US08654052B2

公开(公告)日：2014-02-18

申请号：US13177964

申请日：2011-07-07

申请人： Jung-Hwan Lee ,  Kyung-Joon Kwon ,  Dong-Woo Kim ,  Hee-Won Ahn

发明人： Jung-Hwan Lee ,  Kyung-Joon Kwon ,  Dong-Woo Kim ,  Hee-Won Ahn

IPC分类号： G09G3/36

CPC分类号： G09G3/3426 ,  G09G3/3648 ,  G09G2320/0646 ,  G09G2320/066 ,  G09G2360/16

摘要： The present invention provides method and device for driving local dimming in a liquid crystal display device which enables adaptive application of a gradation roll-off according to an image characteristic. The method for driving local dimming in a liquid crystal display device includes the steps of determining a local dimming value of each light emitting block by analyzing a received image data light emitting block by light emitting block of a backlight unit, producing a pixel compensating coefficient on a light quantity change of each pixel by using the local dimming value of each light emitting block, producing a required gradient value by compensating the received image data by using the pixel compensating coefficient, and producing maximum required gradient values for one frame and an average value of the maximum required gradient values for one frame, determining a roll-off end point of a gradient roll-off section according to the maximum required gradient value, and determining a roll-off starting point of the gradient roll-off section according to the average of the maximum required gradient values, setting a gradient change curve of the gradient roll-off section by using the roll-off starting point and end point, and producing a gain value of each pixel from the gradient change curve, and forwarding an output gradient value by correcting the required gradient value by using the gain value of each pixel.

摘要翻译： 本发明提供一种用于驱动液晶显示装置中的局部调光的方法和装置，其能够根据图像特性自动应用渐变滚降。 用于驱动液晶显示装置中的局部调光的方法包括以下步骤：通过背光单元的发光块分析接收的图像数据发光块来确定每个发光块的局部调光值，产生像素补偿系数 通过使用每个发光块的局部调光值，每个像素的光量变化，通过使用像素补偿系数补偿接收到的图像数据并产生一帧的最大所需梯度值并产生平均值，产生所需的梯度值 的一帧的最大所需梯度值，根据最大所需梯度值确定梯度滚降部分的滚降终点，并根据所述梯度滚降部分的滚降起点确定 最大所需梯度值的平均值，通过使用滚动设置梯度滚降部分的梯度变化曲线 离开起点和终点，并从梯度变化曲线产生每个像素的增益值，并通过使用每个像素的增益值校正所需的梯度值来转发输出梯度值。

公开(公告)号：US20110141154A1

公开(公告)日：2011-06-16

申请号：US12853811

申请日：2010-08-10

申请人： Hee-Won Ahn ,  Hee-Jung Hong ,  Kyung-Joon Kwon ,  Dong-Woo Kim

发明人： Hee-Won Ahn ,  Hee-Jung Hong ,  Kyung-Joon Kwon ,  Dong-Woo Kim

IPC分类号： G09G5/10 ,  G09G3/36

CPC分类号： G09G3/3426 ,  G02F2001/133601 ,  G09G2320/064 ,  G09G2320/0646

摘要： Disclosed herein is a local dimming driving method and device of an LCD device, which is capable of minimizing luminance deviation at the same gray scale due to a dimming difference between blocks. The local dimming driving method of the LCD device includes analyzing input image data in units of blocks and determining a local dimming value per block, performing spatial filtering with respect to the local dimming value per block, repeating spatial filtering by a predetermined repeat count, and controlling luminance of a backlight unit on a block-by-block basis using the local dimming value per block controlled by spatial filtering.

摘要翻译： 这里公开了一种LCD装置的局部调光驱动方法和装置，其能够由于块之间的调光差异而使相同灰度处的亮度偏差最小化。 LCD装置的局部调光驱动方法包括以块为单位分析输入图像数据，并确定每块的局部调光值，对每块的局部调光值进行空间滤波，以预定的重复计数重复空间滤波，以及 使用每个由空间滤波控制的块的局部调光值逐块地控制背光单元的亮度。

公开(公告)号：US08427419B2

公开(公告)日：2013-04-23

申请号：US12853811

申请日：2010-08-10

申请人： Hee-Won Ahn ,  Hee-Jung Hong ,  Kyung-Joon Kwon ,  Dong-Woo Kim

发明人： Hee-Won Ahn ,  Hee-Jung Hong ,  Kyung-Joon Kwon ,  Dong-Woo Kim

IPC分类号： G09G3/36 ,  G09G5/10 ,  G09F13/08

CPC分类号： G09G3/3426 ,  G02F2001/133601 ,  G09G2320/064 ,  G09G2320/0646

摘要： Disclosed herein is a local dimming driving method and device of an LCD device, which is capable of minimizing luminance deviation at the same gray scale due to a dimming difference between blocks. The local dimming driving method of the LCD device includes analyzing input image data in units of blocks and determining a local dimming value per block, performing spatial filtering with respect to the local dimming value per block, repeating spatial filtering by a predetermined repeat count, and controlling luminance of a backlight unit on a block-by-block basis using the local dimming value per block controlled by spatial filtering.

摘要翻译： 这里公开了一种LCD装置的局部调光驱动方法和装置，其能够由于块之间的调光差异而使相同灰度处的亮度偏差最小化。 LCD装置的局部调光驱动方法包括以块为单位分析输入图像数据，并确定每块的局部调光值，对每块的局部调光值进行空间滤波，以预定的重复计数重复空间滤波，以及 使用每个由空间滤波控制的块的局部调光值逐块地控制背光单元的亮度。

公开(公告)号：US20120056907A1

公开(公告)日：2012-03-08

申请号：US13177964

申请日：2011-07-07

申请人： Jung-Hwan Lee ,  Kyung-Joon Kwon ,  Dong-Woo Kim ,  Hee-Won Ahn

发明人： Jung-Hwan Lee ,  Kyung-Joon Kwon ,  Dong-Woo Kim ,  Hee-Won Ahn

IPC分类号： G09G5/10 ,  G09G3/36

CPC分类号： G09G3/3426 ,  G09G3/3648 ,  G09G2320/0646 ,  G09G2320/066 ,  G09G2360/16

摘要： The present invention provides method and device for driving local dimming in a liquid crystal display device which enables adaptive application of a gradation roll-off according to an image characteristic. The method for driving local dimming in a liquid crystal display device includes the steps of determining a local dimming value of each light emitting block by analyzing a received image data light emitting block by light emitting block of a backlight unit, producing a pixel compensating coefficient on a light quantity change of each pixel by using the local dimming value of each light emitting block, producing a required gradient value by compensating the received image data by using the pixel compensating coefficient, and producing maximum required gradient values for one frame and an average value of the maximum required gradient values for one frame, determining a roll-off end point of a gradient roll-off section according to the maximum required gradient value, and determining a roll-off starting point of the gradient roll-off section according to the average of the maximum required gradient values, setting a gradient change curve of the gradient roll-off section by using the roll-off starting point and end point, and producing a gain value of each pixel from the gradient change curve, and forwarding an output gradient value by correcting the required gradient value by using the gain value of each pixel.

摘要翻译： 本发明提供一种用于驱动液晶显示装置中的局部调光的方法和装置，其能够根据图像特性自动应用渐变滚降。 用于驱动液晶显示装置中的局部调光的方法包括以下步骤：通过背光单元的发光块分析接收到的图像数据发光块来确定每个发光块的局部调光值，产生像素补偿系数 通过使用每个发光块的局部调光值，每个像素的光量变化，通过使用像素补偿系数补偿接收到的图像数据并产生一帧的最大所需梯度值并产生平均值，产生所需的梯度值 的一帧的最大所需梯度值，根据最大所需梯度值确定梯度滚降部分的滚降终点，并根据所述梯度滚降部分的滚降起点确定 最大所需梯度值的平均值，通过使用滚动设置梯度滚降部分的梯度变化曲线 离开起点和终点，并从梯度变化曲线产生每个像素的增益值，并通过使用每个像素的增益值校正所需的梯度值来转发输出梯度值。

公开(公告)号：US20120007896A1

公开(公告)日：2012-01-12

申请号：US13178006

申请日：2011-07-07

申请人： Kyung-Joon Kwon ,  Dong-Woo Kim ,  Kee-Won Ahn ,  Jung-Hwan Lee

发明人： Kyung-Joon Kwon ,  Dong-Woo Kim ,  Kee-Won Ahn ,  Jung-Hwan Lee

IPC分类号： G09G5/10 ,  G09G3/36

CPC分类号： G09G3/3426 ,  G09G2320/0646

摘要： A liquid crystal display device capable of improving a contrast ratio and of reducing a halo phenomenon with low power consumption and a method for local dimming driving the same are disclosed. A method for local dimming driving a liquid crystal display includes determining a local dimming value for each of light-emitting blocks based on analyzing input image data by the unit of light-emitting block provided in a backlight unit; determining a halo degree by analyzing a total light quantity of black pixels having black gradations in the input image data; adjusting the number of spatial filtering repetitions based on the determined halo degree; compensating the local dimming value by performing spatial filtering for the local dimming value an adjusted number of times; and controlling brightness of the backlight unit for each of the blocks by using the compensated local dimming value.

摘要翻译： 公开了能够提高对比度和降低功耗低的光晕现象的液晶显示装置及其局部调光方法。 驱动液晶显示器的局部调光方法包括：基于设置在背光单元中的发光块单元分析输入图像数据，确定每个发光块的局部调光值; 通过分析输入图像数据中具有黑色渐变的黑色像素的总光量来确定光晕度; 基于确定的光晕度来调整空间滤波重复的数量; 通过对局部调光值进行调整次数的空间滤波来补偿局部调光值; 以及通过使用补偿的局部调光值来控制每个块的背光单元的亮度。

公开(公告)号：US08760385B2

公开(公告)日：2014-06-24

申请号：US13178006

申请日：2011-07-07

申请人： Kyung-Joon Kwon ,  Dong-Woo Kim ,  Hee-Won Ahn ,  Jung-Hwan Lee

发明人： Kyung-Joon Kwon ,  Dong-Woo Kim ,  Hee-Won Ahn ,  Jung-Hwan Lee

IPC分类号： G09G3/36 ,  G09G3/34

CPC分类号： G09G3/3426 ,  G09G2320/0646

摘要： A liquid crystal display device capable of improving a contrast ratio and of reducing a halo phenomenon with low power consumption and a method for local dimming driving the same are disclosed. A method for local dimming driving a liquid crystal display includes determining a local dimming value for each of light-emitting blocks based on analyzing input image data by the unit of light-emitting block provided in a backlight unit; determining a halo degree by analyzing a total light quantity of black pixels having black gradations in the input image data; adjusting the number of spatial filtering repetitions based on the determined halo degree; compensating the local dimming value by performing spatial filtering for the local dimming value an adjusted number of times; and controlling brightness of the backlight unit for each of the blocks by using the compensated local dimming value.

摘要翻译： 公开了能够提高对比度和降低功耗低的光晕现象的液晶显示装置及其局部调光方法。 驱动液晶显示器的局部调光方法包括：基于设置在背光单元中的发光块单元分析输入图像数据，确定每个发光块的局部调光值; 通过分析输入图像数据中具有黑色渐变的黑色像素的总光量来确定光晕度; 基于确定的光晕度来调整空间滤波重复的数量; 通过对局部调光值进行调整次数的空间滤波来补偿局部调光值; 以及通过使用补偿的局部调光值来控制每个块的背光单元的亮度。