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71. 发明公开

EP0933943A2 Digital signal processing 审中-公开
标题翻译： Digitale Signalverarbeitung
公开(公告)号：EP0933943A2
公开(公告)日：1999-08-04
申请号：EP99101352.5
申请日：1999-01-26
申请人： NDS LIMITED
发明人： Davies, Colin
IPC分类号： H04N7/26
CPC分类号： H04N19/60 , G06T1/20 , H04N19/85 , H04N19/97
摘要： According the present invention there is provided apparatus for matching a plurality of functions to a digital signal so as to represent the digital signal in terms of said functions comprising a first processor for determining one or more common factors in the plurality of functions; and means for representing at least some of the functions in terms of one or more others of said functions thereby to reduce the amount of processing necessary for the matching.
This has the advantage that there is no unnecessary processing to determine the basis functions. Where there is commonality and the process would require less processing potential to make use of this than not then the commonality is exploited.
摘要翻译：根据本发明，提供了用于将多个功能与数字信号进行匹配的装置，以便在所述功能方面表示数字信号，该功能包括用于确定多个功能中的一个或多个共同因素的第一处理器; 以及用于根据所述功能中的一个或多个其他方式表示至少一些功能的装置，从而减少匹配所需的处理量。这样做的优点是没有不必要的处理来确定基础功能。如果共同点和过程需要较少的处理潜力来利用这个而不是那么共同性被利用。

72. 发明公开

EP0929976A1 METHOD AND APPARATUS FOR MOTION ESTIMATION 失效
标题翻译：用于运动估计的方法和设备
公开(公告)号：EP0929976A1
公开(公告)日：1999-07-21
申请号：EP97943960.0
申请日：1997-09-26
申请人： NDS LIMITED
发明人： BOCK, Alois, Martin
IPC分类号： H04N7
CPC分类号： H04N19/567 , H04N19/51
摘要： The present invention relates to a method of generating and transmitting digitally encoded signals in which portions of the code are predicted from earlier. The invention is applied to a digital video compression system in which temporal predictive coding is used in order to reduce the data rate of the transmitted signal. Predictions are made for the reconstruction of the current picture based on elements of pictures that have been coded in the past. A prediction is made for each reference block from each of five picture areas. A distortion value is derived for each prediction and a selection is made from the predictions based on the distortion values of the predictions. By biasing the selection between the different predictions towards that prediction which was last selected, predictions of approximately equal quality from completely different picture areas will be avoided. This avoids the situation where small advantages in prediction quality are outweighed by a larger codeword for the transmission of the prediction.
摘要翻译：本发明涉及一种产生和传输数字编码信号的方法，其中部分代码是从较早的时间预测的。本发明应用于数字视频压缩系统，其中使用时间预测编码以降低发送信号的数据速率。基于过去编码的图像元素对当前图像进行预测。对来自五个图片区域中的每一个的每个参考块进行预测。为每个预测导出失真值，并根据预测的失真值从预测中进行选择。通过在不同的预测之间偏向于最后选择的预测的选择，将避免来自完全不同图像区域的近似相等质量的预测。这避免了预测传输的较大代码字超过预测质量的小优点。

73. 发明公开

EP0886444A2 Filtering method to reduce block artifacts in digital video sequences 失效
标题翻译： Filterungsverfahren zur Reduzierung von Blockartefakten在digitalen Videosequenzen
公开(公告)号：EP0886444A2
公开(公告)日：1998-12-23
申请号：EP98110048.0
申请日：1998-06-02
申请人： NDS LIMITED
发明人： Bock, Alois Martin, Dr.
IPC分类号： H04N7/30
CPC分类号： H04N19/86
摘要： The present invention relates generally to the domain of digital signal processing and, more precisely, the methods and apparatus employed in the reduction of visibility of blockiness in images or video sequences encoded using block-based coding techniques such as MPEG.
The present invention detects a level of blockiness between blocks in an image and applies a variable filter across the block boundaries. The filter parameters are chosen depending on the level of blockiness detected. If no blockiness is detected then no filtering is performed on the image.
An important aspect of the present invention reduces the false detection of naturally occurring blockiness in images by analysing the image both spatially and temporally.
摘要翻译：本发明一般涉及数字信号处理的领域，更确切地说，涉及降低使用基于块的编码技术（例如MPEG）编码的图像或视频序列中的块效果的可视性的方法和装置。本发明检测图像中的块之间的块级，并跨越块边界应用可变滤波器。过滤器参数根据检测到的阻塞水平来选择。如果没有检测到阻塞，则不对图像执行滤波。本发明的一个重要方面通过在空间和时间上分析图像来减少图像中天然发生的块状物的错误检测。

74. 发明公开

EP0871337A2 Method and apparatus for modifying a digital data stream 失效
标题翻译： Verfahren und Vorrichtung zurVeränderungeines digitalen Datenstroms
公开(公告)号：EP0871337A2
公开(公告)日：1998-10-14
申请号：EP98302423.3
申请日：1998-03-30
申请人： NDS LIMITED
发明人： Bock, Alois Martin , Jordon, John Paul
IPC分类号： H04N7/52 , H04N7/32
CPC分类号： H04N7/52 , H04N19/152 , H04N19/50 , H04N21/234381 , H04N21/23611 , H04N21/2401
摘要： This invention relates to improvements in controlling the decoder buffer occupancy, particularly in relation to, but not exclusively to, switching between compressed bitstreams.
This invention provides a method of modifying a digital bitstream 11 to be transmitted through a decoder 14 having a buffer 15. An expected level of buffer occupancy is determined for a point in the digital bitstream 11 and the digital bitstream 11 is modified at that point to change the buffer occupancy to a second level. The second level may be determined from a second digital bitstream 12. One advantage of this method is that the occupancy of the buffer 15 can be adjusted to match the buffer requirements of the second bitstream 12 before switching to the second bitstream 12.
The invention provides method and apparatus for improving the decoder buffer management during switching between bitstreams.
摘要翻译：本发明涉及在控制解码器缓冲器占用方面的改进，特别是关于而不是排他地在压缩比特流之间进行切换。本发明提供了一种修改要通过具有缓冲器15的解码器14发送的数字比特流11的方法。为数字比特流11中的一个点确定预期的缓冲器占用水平，并且数字比特流11在该点修改为将缓冲区占用率更改为第二级。可以从第二数字比特流12确定第二级。该方法的一个优点是可以调整缓冲器15的占用以在切换到第二比特流12之前匹配第二比特流12的缓冲器要求。本发明提供用于在比特流之间切换期间改进解码器缓冲器管理的方法和装置。

75. 发明公开

EP0823700A2 Digital syntesizer 失效
标题翻译：数字合成
公开(公告)号：EP0823700A2
公开(公告)日：1998-02-11
申请号：EP97305750.8
申请日：1997-07-30
申请人： NDS LIMITED
发明人： Beech, Brian Herbert
IPC分类号： G10L3/00 , G10L3/02 , G10L5/02 , G10L7/02
CPC分类号： G06F1/0328 , G06F2211/902 , H03L7/1806
摘要： The invention concerns a method and apparatus to synthesize a frequency employing digital phase words to represent successive phase values.
A digital dither signal generator is used to generate a succession of dither words which are summed with the phase words to form address words. The address words are used to address a store to convert the address words to waveform values. The periodic quantisation noise introduced by the digital process is made more random by means of the dither words thereby reducing the quantisation noise components while accepting an increased total noise power.
The synthesizer is of particular advantage when used to generate the reference frequency for a frequency multiplier implemented as a phase lock loop. By making the dither sequence repetition frequency outside the phase lock loop bandwidth, the spurious components are removed from the frequency range of interest.
摘要翻译：本发明涉及一种使用数字相位字来合成频率来表示连续相位值的方法和装置。数字抖动信号发生器用于产生与相位字相加的一连串抖动字以形成地址字。地址字用于寻址存储，以将地址字转换为波形值。由数字处理引入的周期性量化噪声通过抖动字进行更随机，从而在接受增加的总噪声功率的同时减少量化噪声分量。当用于为实现为锁相环的倍频器生成参考频率时，合成器具有特别的优点。通过使抖动序列重复频率超出锁相环带宽，则从感兴趣的频率范围中去除杂散分量。

76. 发明授权

EP2249529B1 Optimally adapting multimedia content for mobile subscriber device playback 失效转让
公开(公告)号：EP2249529B1
公开(公告)日：2019-01-16
申请号：EP10008832.7
申请日：2005-03-21
申请人： NDS Limited
发明人： Mail, David , Solow, Hillel , Waisbard, Erez , Anatoly, Seldin , Carmi, Bogot
IPC分类号： H04L12/58 , H04L29/06

77. 发明授权

EP2661737B1 COORDINATED 2-DIMENSIONAL AND 3-DIMENSIONAL GRAPHICS PROCESSING 失效转让
公开(公告)号：EP2661737B1
公开(公告)日：2018-12-05
申请号：EP11774105.8
申请日：2011-10-03
申请人： NDS Limited
发明人： GAUDE, Nicolas , RUELLE, Alex , YAHYAOUI, Mohamed , ANDRIEUX, Fabien , MARICHEZ, Julien , LENGRONNE, Fabien
IPC分类号： G06T13/20
CPC分类号： G06T13/20 , G06T13/00 , G06T13/40 , G06T13/80 , G06T15/00 , G06T15/10 , G06T17/00 , G06T17/20 , G06T19/00
摘要： A data processing system (70) for graphics processing, including a scene manager (80). The scene manager (80) includes a scene loader (86) for receiving a description of 3 dimensional objects in a scene from a 3-dimensional modelling tool (46). The description includes first 2-dimensional frame data. The scene manager (80) has a texture image modification unit (84) for receiving second 2-dimensional frame data from a 2-dimensional rendering engine (40), and for replacing the first frame data by the second frame data. The scene manager (80) has an animation scheduler for scheduling and monitoring an animation of the scene. The system includes a display manager (96) operative to invoke the scene manager (80) to render output frames in a display buffer (100), and a scene Tenderer (88) configured for applying the 2-dimensional frame data to the 3-dimensional objects to produce textured 3-dimensional objects in the display buffer (100) and outputting the textured objects in the animation. Related apparatus and methods are also described.

78. 发明授权

EP2646974B1 ADDING WATERMARKS TO VIDEO CONTENT 有权转让
标题翻译：水MARK用于视频内容增加
公开(公告)号：EP2646974B1
公开(公告)日：2017-04-12
申请号：EP12700363.0
申请日：2012-01-01
申请人： NDS Limited
发明人： GEYZEL, Zeev , RATNER, Daniel
IPC分类号： G06T1/00
CPC分类号： H04N21/2541 , G06T1/0028 , G06T1/0085 , G06T2201/0051 , H04N5/913 , H04N21/42684 , H04N21/4627 , H04N21/8358 , H04N2005/91335 , H04N2005/91392

79. 发明授权

EP1410140B1 DIGITAL RIGHTS MANAGEMENT SYSTEM AND METHOD 有权
标题翻译：系统和方法用于管理数字权利
公开(公告)号：EP1410140B1
公开(公告)日：2017-02-15
申请号：EP02700544.6
申请日：2002-02-21
申请人： NDS Limited
发明人： SHEN ORR, Chaim , HIBSHOOSH, Eliphaz , BENEDEK, Gyora , SOLOW, Hillel , BELENKY, Yaacov , TSURIA, Yossi , SHKEDY, Zvi , HAENEL, Arie
IPC分类号： G06F1/00 , G06F21/10
CPC分类号： G06F21/10 , G06F2221/0704 , G06F2221/0744 , G09G5/00 , G09G2358/00 , G09G2360/18

80. 发明授权

EP2710808B1 DISTRIBUTING AUDIO VIDEO CONTENT 有权转让
标题翻译： VERTEILUNG VON AUDIO-VIDEO-INHALTEN
公开(公告)号：EP2710808B1
公开(公告)日：2017-01-11
申请号：EP12740212.1
申请日：2012-06-21
申请人： NDS Limited
发明人： EPSTEIN, Steve , SOLOW, Hillel , SELLA, Yaron , KIPNIS, Aviad , POUPKO, Avraham
IPC分类号： H04N21/8543 , H04N21/854 , H04N21/2343 , H04N21/643 , H04N21/258 , H04L29/06
CPC分类号： H04N21/2343 , H04L65/4076 , H04L65/80 , H04N21/23439 , H04N21/25825 , H04N21/25858 , H04N21/643 , H04N21/85406 , H04N21/8543

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