Method and device for reducing line load effect
    1.
    发明授权
    Method and device for reducing line load effect 失效
    减少线路负载效应的方法和装置

    公开(公告)号:US08441415B2

    公开(公告)日:2013-05-14

    申请号:US10583533

    申请日:2004-12-14

    IPC分类号: G09G3/28

    摘要: The present invention relates to a method for processing data of a picture to be displayed on a display panel with persistent luminous elements in order to reduce load effect in said display means. The method comprises the following steps: computing, for each subfield, the amount of activated luminous elements in each line of luminous elements of the display panel, called line load, calculating, for each subfield, the maximal difference of line loads of two consecutive lines of the display panel, and selecting, for each subfield, a sustain frequency in accordance with its maximal load difference in order to reduce line load effect.

    摘要翻译: 本发明涉及一种用于处理要在持续发光元件的显示面板上显示的图像的数据的方法,以减少所述显示装置中的负载效应。 该方法包括以下步骤:对于每个子场,计算显示面板的每行发光元件中的激活的发光元件的量,称为线路负载,针对每个子场计算两条连续线的线路负载的最大差值 并且根据其最大负载差异为每个子场选择维持频率,以减少线路负载效应。

    Method and device for encoding luminance values into subfield code words in a display device
    2.
    发明授权
    Method and device for encoding luminance values into subfield code words in a display device 有权
    用于将亮度值编码为显示装置中的子字段代码字的方法和装置

    公开(公告)号:US07804509B2

    公开(公告)日:2010-09-28

    申请号:US11522767

    申请日:2006-09-18

    IPC分类号: G09G5/10

    摘要: The invention relates to a method and a device for encoding the luminance value of a pixel of a picture into a subfield code word in a display device. It can be applied to every display device using a PWM (Pulse Width Modulation) technology and subfields for displaying video picture. It can be used to compensate for any luminance problem that can be estimated. The general idea of the recursive coding is to encode one sub-field after the other in order to be able to compensate for problems occurring on one sub-field with the other sub-fields. More particularly, the bits of a subfield code word are computed recursively one after the other such that the defects (e.g. line load and/or linearity) in the light emission or luminance generated by a bit of the subfield code word can be compensated by the following bits of the subfield code word.

    摘要翻译: 本发明涉及一种用于将图像的像素的亮度值编码为显示装置中的子字段代码字的方法和装置。 它可以应用于每个显示设备使用PWM(脉宽调制)技术和子字段来显示视频图像。 它可以用于补偿任何可以估计的亮度问题。 递归编码的一般思想是将一个子场重新编码,以便能够补偿在一个子场与其他子场发生的问题。 更具体地说,副场码字的位逐个递归地计算,使得由子场码字的位产生的光发射或亮度中的缺陷(例如线路负载和/或线性度)可以由 子字段代码字的后续位。

    Method and device for processing video data by using specific border coding
    3.
    发明授权
    Method and device for processing video data by using specific border coding 有权
    使用特定边界编码处理视频数据的方法和装置

    公开(公告)号:US07796138B2

    公开(公告)日:2010-09-14

    申请号:US10584743

    申请日:2004-12-20

    IPC分类号: G09G5/00

    摘要: Response fidelity problems appear for some specific video levels at PDP borders. The reason is that some cells at the border of the PDP panel are not completely closed and pollute when switched ON neighbouring cells being OFF. Therefore, it is suggested to encode the video levels in the border area in a specific way. Especially, for critical sub-fields within the code it is forbidden to insert a binary 0 between two binary 1. Thus, the neighbourhood of critical sub-fields being ON and OFF is avoided. Preferably, the specific border coding is performed under the control of an average power management and codewords being not used are recreated by dithering.

    摘要翻译: 针对PDP边界的某些特定视频级别出现响应保真问题。 原因是在PDP面板的边界处的一些单元不是完全关闭,并且在接通相邻单元关闭时被污染。 因此,建议以特定方式对边界区域中的视频级别进行编码。 特别地,对于代码中的关键子字段,禁止在二进制1之间插入二进制0。因此,避免了关键子字段的邻域为ON和OFF。 优选地,在平均功率管理的控制下执行特定边界编码,并且通过抖动来重新创建不使用的码字。

    Method and device for processing video data by combining error diffusion and another dithering
    4.
    发明授权
    Method and device for processing video data by combining error diffusion and another dithering 有权
    通过组合误差扩散和另一种抖动来处理视频数据的方法和装置

    公开(公告)号:US07738719B2

    公开(公告)日:2010-06-15

    申请号:US11186471

    申请日:2005-07-21

    IPC分类号: G06K9/00 G06K15/00

    CPC分类号: G09G3/2066

    摘要: For improving the grey scale portrayal, several dithering methods are used: Cell-based dithering, multi-mask dithering or error diffusion. Each of them has specific disadvantages. A simple combination of them does not bring expected advantages. However, an improvement is obtained if the result of the multi-mask dithering is used for controlling the error diffusion by a switch, for example.

    摘要翻译: 为了改善灰度图形,使用了几种抖动方法:基于单元的抖动,多掩码抖动或误差扩散。 他们每个都有特定的缺点。 它们的简单组合不会带来预期的优势。 然而,例如,如果将多掩模抖动的结果用于通过开关来控制误差扩散,则获得了改进。

    Video coding method and system for a plasma display panel
    5.
    发明授权
    Video coding method and system for a plasma display panel 失效
    用于等离子体显示面板的视频编码方法和系统

    公开(公告)号:US07190333B2

    公开(公告)日:2007-03-13

    申请号:US10665853

    申请日:2003-09-18

    IPC分类号: G09G3/28

    摘要: The present invention relates to a coding method intended to improve the performance of GCC coding based on the temporal centre of gravity of displayed video codes. According to the invention, the number of video levels that can be selected in order to implement the GCC coding is increased by increasing the number of subfields in the video level display frame. This increase in the number of subfields is made possible by simultaneously addressing the cells of at least two adjacent rows of the PDP during at least two subfields of the video image display frame.

    摘要翻译: 本发明涉及一种旨在基于所显示的视频码的时间重心来提高GCC编码的性能的编码方法。 根据本发明,通过增加视频级显示帧中的子字段的数量来增加为了实现GCC编码可以选择的视频级别的数量。 通过在视频图像显示帧的至少两个子场期间同时寻址PDP的至少两个相邻行的单元,使得子场数量的增加成为可能。

    Method and apparatus for generating motion compensated pictures
    6.
    发明授权
    Method and apparatus for generating motion compensated pictures 有权
    用于产生运动补偿图像的方法和装置

    公开(公告)号:US08355441B2

    公开(公告)日:2013-01-15

    申请号:US11791294

    申请日:2005-12-08

    摘要: The present invention relates to a new method for generating motion compensated picture by interpolating two consecutive source pictures without using motion estimator. For a given pixel to be interpolated, all displacements within a given search range between former and next frame are considered and for each displacement the displaced block difference is calculated. The pixel value is then equal to the sum of each averaged pixel pair within the search range weighted by a correlation coefficient function of the corresponding displaced block difference.

    摘要翻译: 本发明涉及一种通过在不使用运动估计器的情况下内插两个连续的源图像来产生运动补偿图像的新方法。 对于要插值的给定像素,考虑在前一帧和下一帧之间的给定搜索范围内的所有位移,并且对于每个位移,计算位移块差。 然后,像素值等于由相应的位移块差的相关系数函数加权的搜索范围内的每个平均像素对的和。

    Method for optimizing brightness in a display device and apparatus for implementing the method
    8.
    发明授权
    Method for optimizing brightness in a display device and apparatus for implementing the method 有权
    用于优化显示装置中的亮度的方法和用于实现该方法的装置

    公开(公告)号:US07173580B2

    公开(公告)日:2007-02-06

    申请号:US10744955

    申请日:2003-12-23

    IPC分类号: G09G3/28

    摘要: The invention relates to a method for optimizing brightness in a display device having a plurality of luminous elements corresponding to the pixels of a picture, wherein the time duration of a video frame or video field is divided into a plurality of sub fields during which the luminous elements can be activated for light emission with sustain pulses corresponding to a sub field code word which is used for brightness control, the total number of sustain pulses being determined in view of a selected power mode function of picture load the method including the following steps: setting a threshold value in relation to the picture load, comparing, for a frame, the number of the current sustain pulse to said threshold value, if the number of the current sustain pulses is below the threshold value, the sustain pulses are generated at a fixed frequency, if the number of the current sustain pulses is above the threshold value, the sustain pulses are generated at an evolving frequency. This invention applies mainly to PDP and all displays controlled by using a PWM.

    摘要翻译: 本发明涉及一种用于优化具有对应于图像的像素的多个发光元件的显示装置中的亮度的方法,其中视频帧或视频场的持续时间被划分为多个子场,在此期间发光 元件可以被激活以发光,其中维持脉冲对应于用于亮度控制的子场码字,维持脉冲的总数是根据所选择的图像负载的功率模式函数确定的,该方法包括以下步骤: 设置相对于图像负载的阈值,将帧的当前维持脉冲的数目与所述阈值进行比较,如果当前维持脉冲的数量低于阈值,则维持脉冲在 固定频率,如果当前维持脉冲的数目高于阈值,则以演变频率产生维持脉冲。 本发明主要适用于PDP和使用PWM控制的所有显示器。

    Apparatus for driving a plasma display panel with APL pre-measurement and corresponding method
    10.
    发明授权
    Apparatus for driving a plasma display panel with APL pre-measurement and corresponding method 失效
    用于用APL预测量驱动等离子体显示面板的装置和相应的方法

    公开(公告)号:US08125500B2

    公开(公告)日:2012-02-28

    申请号:US11607615

    申请日:2006-12-01

    IPC分类号: G09G5/10

    摘要: A picture quality when reducing the brightness or the contrast of the picture on a plasma panel shall be improved. For this purpose there is provided a driving apparatus including brightness/contrast control means for receiving video input data for modifying the video levels of the video input data in accordance with external adjustment data and for outputting modified video data. First power measurement means measure a power level of the modified video data and supply a first power level. Second power measurement means measure a power level of the video input data and supply a second power level. Generator means generate a third power level comprised between the first power level and the second power level or equal to the larger one to data processing means. The data processing means calculate the maximum number of sustain pulses per frame applicable to the modified video data on the basis of the third power level and control the display of the modified video data on the plasma display panel. Thus, the number of gray levels can be increased and the picture quality improves significantly.

    摘要翻译: 降低等离子面板上的图像的亮度或对比度时的图像质量将得到改善。 为此,提供一种包括亮度/对比度控制装置的驱动装置,用于接收用于根据外部调整数据修改视频输入数据的视频电平并用于输出修改的视频数据的视频输入数据。 第一功率测量意味着测量修改的视频数据的功率电平并提供第一功率电平。 第二功率测量意味着测量视频输入数据的功率电平并提供第二功率电平。 发电机意味着产生包括在第一功率电平和第二功率电平之间或等于数据处理装置的较大功率电平的第三功率电平。 数据处理装置基于第三功率电平计算适用于修改的视频数据的每帧的维持脉冲的最大数量,并且控制在等离子体显示面板上显示修改的视频数据。 因此,可以增加灰度级数,并且显着提高画面质量。