公开(公告)号：EP1926318A2

公开(公告)日：2008-05-28

申请号：EP08002037.3

申请日：2003-06-30

申请人： Dwight Cavendish Systems Limited

发明人： Tan, Baolin ,  Abdin, Mazen

IPC分类号： H04N7/169

CPC分类号： H04N5/913 ,  H04N7/1693 ,  H04N2005/91314

摘要： A anti-copy programme signal is provided. Copies of the anti-copy video pulses made on a video recorder experience reduced quality and interference in playback making them unpleasant to watch. The uncopied signal can be viewed without any material effect on picture quality.
The signal comprises a pulse 28 added to each line 6 of the signal throughout both the visible picture region and throughout the vertical blanking region 12, as well as a first modulated wave-form 34 added to the vertical synchronisation pulses 16 of the signal and a second modulated wave-form 36 added to several lines 6 of the picture signal before the vertical blanking section 12.
The presence of all three of these features together has been found to be provide a surprising accumulative effectiveness in causing interference in the reproduction of the modified video signal during playback of the copied video signal, that is greater than the effectiveness provided by the different features taken separately.

摘要翻译： 本发明涉及一种防拷贝节目信号。 防复制脉冲视频的副本在播放录像机体验质量下降和干扰作出使他们不愉快的观看。 的未复制的信号可以在没有对画质的任何材料的效果进行查看。 所述信号包括脉冲28添加到信号的每一行6在整个这两个可视画面区域和整个垂直消隐区12，以及第一调制波形34加到垂直同步脉冲的信号的16和 第二调制波形36加到几行6的图象信号的垂直消隐部分12的所有三个合成的存在功能一起已被发现是在已修改的重放引起干扰提供一个令人惊讶的有效性累计之前 复制的视频信号的重放期间的视频信号，没有比由单独采取的不同特征提供的效果越大。

公开(公告)号：EP1668900A1

公开(公告)日：2006-06-14

申请号：EP04736226.4

申请日：2004-06-07

申请人： Dwight Cavendish Systems Limited

发明人： Tan, Baolin ,  Abdin, Mazen Abdul-Hamed ,  Hu, Maotai

IPC分类号： H04N5/775 ,  H04N5/913 ,  H04N7/167

CPC分类号： H04N7/1713 ,  H04N5/775 ,  H04N5/913 ,  H04N2005/91314

摘要： A method and apparatus are described for modifying an analogue video signal to impair its conversion to a digital signal by an analogue to digital converter. The resulting modified signal may prevent the operation of the analogue to digital converter altogether, or even if a digital signal can be output and recorded, may result in a signal which is difficult to view due to a reduction in quality on playback. The modifications made to the signal include altering the amplitude of the horizontal synchronization pulses in the original signal, and/or modifying the level of the back porch, or the region of the signal adjacent the back porch. Additionally, methods are contemplated for the use of specific response models for target analogue to digital converters, and display devices.

公开(公告)号：EP1926318A3

公开(公告)日：2008-07-30

申请号：EP08002037.3

申请日：2003-06-30

申请人： Dwight Cavendish Systems Limited

发明人： Tan, Baolin ,  Abdin, Mazen

IPC分类号： H04N7/169

CPC分类号： H04N5/913 ,  H04N7/1693 ,  H04N2005/91314

摘要： A anti-copy programme signal is provided. Copies of the anti-copy video pulses made on a video recorder experience reduced quality and interference in playback making them unpleasant to watch. The uncopied signal can be viewed without any material effect on picture quality.
The signal comprises a pulse 28 added to each line 6 of the signal throughout both the visible picture region and throughout the vertical blanking region 12, as well as a first modulated wave-form 34 added to the vertical synchronisation pulses 16 of the signal and a second modulated wave-form 36 added to several lines 6 of the picture signal before the vertical blanking section 12.
The presence of all three of these features together has been found to be provide a surprising accumulative effectiveness in causing interference in the reproduction of the modified video signal during playback of the copied video signal, that is greater than the effectiveness provided by the different features taken separately.

摘要翻译： 提供防复制程序信号。 在录像机上制作的反复制视频脉冲副本会降低播放质量和干扰，让观看者感到不快。 未经审查的信号可以在不影响图像质量的情况下查看。 该信号包括在整个垂直消隐区域12的整个可见图像区域和整个垂直消隐区域12中的信号的每个线6上添加的脉冲28，以及添加到信号的垂直同步脉冲16的第一调制波形34和 第二调制波形36被加到垂直消隐部分12之前的图像信号的若干行6中。已经发现所有这三个特征一起存在提供了令人惊讶的累积有效性，以引起对修改的再现的干扰 视频信号在复制的视频信号的重放期间，这大于由不同的特征单独提供的有效性。