公开(公告)号：EP1844612A2

公开(公告)日：2007-10-17

申请号：EP05811937.1

申请日：2005-11-25

申请人： Barco NV

发明人： KIMPE, Tom

IPC分类号： H04N7/26 ,  H04N7/24

CPC分类号： H04W12/02 ,  G06F21/6245 ,  H04L67/2842 ,  H04L67/42 ,  H04N19/12 ,  H04N19/127 ,  H04N19/132 ,  H04N19/154 ,  H04N19/164 ,  H04N19/17 ,  H04N19/172 ,  H04N19/20 ,  H04N19/37 ,  H04N19/423 ,  H04N19/61 ,  H04N19/90 ,  H04N21/25841 ,  H04N21/25858 ,  H04W4/026 ,  H04W4/04 ,  H04W4/30

摘要： The present invention provides a method for transmission of a images and/or video over bandwidth limited transmission channels having varying available bandwidth, which method comprises the use of a classification algorithm for decomposing the images and/or video to be transmitted into multiple spatial areas, each area having a specific image type; detecting the image type of each of those areas separately selecting for each of those areas an image and/or video encoding algorithm having a compression ratio. The classification algorithm prioritizes each of the areas, the classification algorithm increasing the compression ratio of the image and/or video encoding algorithm dedicated to spatial areas having lower priority in case of decreasing bandwidth.

公开(公告)号：EP1805745B1

公开(公告)日：2014-03-19

申请号：EP05806017.9

申请日：2005-10-25

申请人： Barco NV

发明人： VERSTRAETE, Gerrit ,  KIMPE, Tom

IPC分类号： G09F9/30 ,  F21V9/00 ,  G09G3/36 ,  G02F1/13357

CPC分类号： G09G3/3413 ,  G02F1/133603 ,  G02F1/133606 ,  G02F1/133609 ,  G02F1/133611 ,  G02F2001/133607 ,  G09G3/06 ,  G09G3/342 ,  G09G3/3607 ,  G09G5/10 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/0646 ,  G09G2320/0666

摘要： A display has a spatial light modulator 10 for dynamically controlling a luminance of each pixel according to an input signal, the spatial light modulator having a non uniform spatial characteristic, the display also having an optical filter 20 having a spatial pattern to alter the luminance to compensate at least partially for the non uniform spatial characteristic. An electronic signal processing element applies some pre compensation predominantly of higher spatial frequencies for the non uniform spatial characteristic. Such dynamic and optical compensation can enable tuning for different optimizations or for compensating for variations over time. A backlight has an optical source and an optical filter, the source having a colour output which has a non uniform spatial characteristic, and the optical filter having a spatial pattern to alter the colour to compensate in part at least for the non uniform spatial characteristic.

公开(公告)号：EP2580748A1

公开(公告)日：2013-04-17

申请号：EP11727382.1

申请日：2011-06-14

申请人： Barco NV

发明人： KIMPE, Tom ,  XTHONA, Albert

IPC分类号： G09G1/00 ,  G09G3/20 ,  G09G3/34

CPC分类号： G09G3/3208 ,  G09G3/3406 ,  G09G5/10 ,  G09G2320/0233 ,  G09G2320/0276 ,  G09G2320/041 ,  G09G2320/043 ,  G09G2320/0613 ,  G09G2320/0626 ,  G09G2320/0653 ,  G09G2320/066 ,  G09G2320/0673 ,  G09G2320/0693 ,  G09G2330/022

摘要： A system and method for increasing perceived contrast in a medical display is provided. The method involves temporarily increasing luminance output of at least part of a display in response to a received request for improved visualization. To compensate for the change in luminance especially while the viewer's eyes adapt to the change in luminance, the method includes continuously modifying the display parameters especially during an adaptation period to match an adaptation of the viewer's eyes. The modified parameters at any given may correlate to the degree of adaptation by the viewer's eyes to the change. After a period of time, the display may be returned to its normal operating luminance and corresponding settings, which may be selected to maximize the lifetime of the display.

公开(公告)号：EP1815457B1

公开(公告)日：2009-04-08

申请号：EP05816554.9

申请日：2005-11-28

申请人： Barco NV

发明人： DEROO, Danny ,  KIMPE, Tom

IPC分类号： G09G5/02 ,  H04N17/04

CPC分类号： G09G3/006 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2320/0666 ,  G09G2320/0673 ,  G09G2320/0693 ,  H04N17/04

摘要： Testing a display involves display of a series of test patterns, each at a different luminance or colour, and with a predetermined minimum difference of luminance or colour from their background, each pattern being unpredictable to a user, and determining if the user has correctly identified the patterns. This can enable a more objective test without needing external measuring equipment. Calibrating the display involves determining an output luminance level by detecting a minimal difference of drive signal to give a just noticeable output luminance difference at a given high luminance drive level, and determining an absolute luminance of the given high input luminance level from the minimal difference and from a predetermined human characteristic of visibility threshold of luminance changes. This can avoid the need for an external or internal sensor. This can be useful during conformance checks or during calibration of the display for example.

公开(公告)号：EP1915875A1

公开(公告)日：2008-04-30

申请号：EP06776418.3

申请日：2006-07-26

申请人： Barco NV

发明人： KIMPE, Tom ,  DORVAL, Etienne

IPC分类号： H04N17/04

CPC分类号： G09G3/2092 ,  G09G3/006 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/0693

摘要： The invention provides a new method to calibrate a display system such that the display system is conforming to an enforced standard for a wider range of parameters, e.g. viewing angles, than compared to traditional calibration methods. This is obtained by calculating an optimised set of calibration parameters for the display to be conform to the enforced standard for the selected range of parameters.

公开(公告)号：EP1805750A1

公开(公告)日：2007-07-11

申请号：EP05810650.1

申请日：2005-10-25

申请人： Barco NV

发明人： KIMPE, Tom

IPC分类号： G09G3/34

CPC分类号： G09G3/20 ,  G09G3/2025 ,  G09G3/2044 ,  G09G3/2077 ,  G09G3/3406 ,  G09G2310/0235 ,  G09G2310/0237 ,  G09G2320/0276 ,  G09G2320/0633 ,  G09G2320/0646 ,  G09G2320/0666

摘要： A display (10) has a non pixel addressable backlight (130), having a temporal modulation applied, a pixel addressable LCD (120) in an optical path and the pixel addressable part being arranged to output each pixel of a frame as a temporal sequence of output values unrelated to colour components of the pixel, different values of the sequence coinciding with different output levels of the modulated non pixel addressable part.. The apparent luminance or colour of the pixels can be made to take intermediate values between the gradations dictated by the stepsize corresponding to a least significant bit of the pixel addressable part, to enable more accurate reproduction of both colour and greyscale images. Additional intermediate output levels are concentrated at low illumination levels. A convertor generates a temporal modulation of the pixels for the LCD according to a value of the pixels in an input signal, and synchronized to the temporal modulation of the backlight.

公开(公告)号：EP1844612B1

公开(公告)日：2017-05-10

申请号：EP05811937.1

申请日：2005-11-25

申请人： Barco NV

发明人： KIMPE, Tom

IPC分类号： G06F21/62 ,  H04N21/258 ,  H04W4/02 ,  H04W12/02 ,  H04L29/08 ,  H04N19/172 ,  H04N19/61 ,  H04N19/37 ,  H04N19/12 ,  H04N19/127 ,  H04N19/132 ,  H04N19/154 ,  H04N19/164 ,  H04N19/17 ,  H04N19/20 ,  H04N19/423 ,  H04N19/90 ,  H04W4/04

CPC分类号： H04W12/02 ,  G06F21/6245 ,  H04L67/2842 ,  H04L67/42 ,  H04N19/12 ,  H04N19/127 ,  H04N19/132 ,  H04N19/154 ,  H04N19/164 ,  H04N19/17 ,  H04N19/172 ,  H04N19/20 ,  H04N19/37 ,  H04N19/423 ,  H04N19/61 ,  H04N19/90 ,  H04N21/25841 ,  H04N21/25858 ,  H04W4/026 ,  H04W4/04 ,  H04W4/30

摘要： The present invention provides a method for transmission of a images and/or video over bandwidth limited transmission channels having varying available bandwidth, which method comprises the use of a classification algorithm for decomposing the images and/or video to be transmitted into multiple spatial areas, each area having a specific image type; detecting the image type of each of those areas separately selecting for each of those areas an image and/or video encoding algorithm having a compression ratio. The classification algorithm prioritizes each of the areas, the classification algorithm increasing the compression ratio of the image and/or video encoding algorithm dedicated to spatial areas having lower priority in case of decreasing bandwidth.

摘要翻译： 本发明在具有不同的可用带宽，该方法包括使用分类算法的用于分解的图像和/或视频为反式mitted成多个空间区域有限带宽的传输信道提供用于一个图像和/或视频的传输的方法， 每个区域具有一个特定的图像类型; 检测每个这些区域的图象类型分别为每个选择具有压缩比的图像和/或视频编码算法的那些区域。 分类算法优先每个所述区域，所述分类算法增加专用于减小带宽的情况下，具有较低优先级的空间区域的图像和/或视频编码算法的压缩比。

公开(公告)号：EP2301009A1

公开(公告)日：2011-03-30

申请号：EP09780660.8

申请日：2009-07-15

申请人： Barco NV

发明人： MASSART, Mathieu ,  KIMPE, Tom ,  BERT, Tom

IPC分类号： G09G5/00

CPC分类号： G09G3/20 ,  G09G2320/046 ,  G09G2320/0613 ,  G09G2340/125

摘要： The invention relates to a method for processing an image, adapted for a display comprising a plurality of pixels, comprising the steps of setting, in dependence upon the image content, a portion out of the plurality of pixels to black for obtaining off -pixels thereby reducing the resolution of the display to a predefined value; and sequentially switching the position of the off -pixels over the plurality of pixels comprised by the display. In this way, a possibility for reducing or compensating for image retention in displays is provided.

公开(公告)号：EP1805745A1

公开(公告)日：2007-07-11

申请号：EP05806017.9

申请日：2005-10-25

申请人： Barco NV

发明人： VERSTRAETE, Gerrit ,  KIMPE, Tom

IPC分类号： G09F9/30 ,  F21V9/00 ,  G09G3/36 ,  G02F1/13357

CPC分类号： G09G3/3413 ,  G02F1/133603 ,  G02F1/133606 ,  G02F1/133609 ,  G02F1/133611 ,  G02F2001/133607 ,  G09G3/06 ,  G09G3/342 ,  G09G3/3607 ,  G09G5/10 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/0646 ,  G09G2320/0666

摘要： A display has a spatial light modulator 10 for dynamically controlling a luminance of each pixel according to an input signal, the spatial light modulator having a non uniform spatial characteristic, the display also having an optical filter 20 having a spatial pattern to alter the luminance to compensate at least partially for the non uniform spatial characteristic. An electronic signal processing element applies some pre compensation predominantly of higher spatial frequencies for the non uniform spatial characteristic. Such dynamic and optical compensation can enable tuning for different optimizations or for compensating for variations over time. A backlight has an optical source and an optical filter, the source having a colour output which has a non uniform spatial characteristic, and the optical filter having a spatial pattern to alter the colour to compensate in part at least for the non uniform spatial characteristic.

公开(公告)号：EP3562379A1

公开(公告)日：2019-11-06

申请号：EP16831876.4

申请日：2016-12-30

申请人： Barco NV

发明人： KIMPE, Tom ,  TOUNE, Frederik ,  DIRICX, Bart ,  DE BRAUWER, Elie ,  XTHONA, Albert ,  ROUSSON, Johanna ,  NOLLET, Peter

IPC分类号： A61B5/00 ,  A61B1/00