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1. 发明授权

US11930294B2 Anti-piracy video transmission and display 有权
公开(公告)号：US11930294B2
公开(公告)日：2024-03-12
申请号：US17980426
申请日：2022-11-03
申请人： Comcast Cable Communications, LLC
发明人： Michael Herbert
IPC分类号： H04N5/93 , H04N5/913 , H04N7/169 , H04N19/467 , H04N21/4402 , G06F16/783 , H04N5/92 , H04N19/172 , H04N19/186 , H04N19/85 , H04N21/4627 , H04N21/8352
CPC分类号： H04N5/913 , H04N7/1696 , H04N19/467 , H04N21/4402 , G06F16/7847 , H04N2005/91357 , H04N2005/91392 , H04N19/172 , H04N19/186 , H04N19/85 , H04N21/4627 , H04N21/8352
摘要： Methods and systems described herein generate content that quickly cycles between different-colored frames at a rapid rate that may be imperceptible to human viewers. The human eye tends to blend nearby frames together, so that a human viewer will see a full color spectrum even though only a single color is displayed at any given time. The video display may repeatedly cycle between individual color frames, thus providing video content that appears normal to a human viewer. However, a video recording device may capture only some of the color frames. Therefore, the video recorded by video recording devices may include undesirable color flicker or other color artifacts, which may deter unauthorized copying.

2. 发明授权

US11533450B2 Anti-piracy video transmission and display 有权
公开(公告)号：US11533450B2
公开(公告)日：2022-12-20
申请号：US15714575
申请日：2017-09-25
申请人： Comcast Cable Communications, LLC
发明人： Michael Herbert
IPC分类号： H04N5/93 , H04N5/913 , H04N19/467 , H04N7/169 , H04N21/4402 , H04N5/92 , H04N21/8352 , H04N21/4627 , G06F16/783 , H04N19/85 , H04N19/186 , H04N19/172
摘要： Methods and systems described herein generate content that quickly cycles between different-colored frames at a rapid rate that may be imperceptible to human viewers. The human eye tends to blend nearby frames together, so that a human viewer will see a full color spectrum even though only a single color is displayed at any given time. The video display may repeatedly cycle between individual color frames, thus providing video content that appears normal to a human viewer. However, a video recording device may capture only some of the color frames. Therefore, the video recorded by video recording devices may include undesirable color flicker or other color artifacts, which may deter unauthorized copying.

3. 发明授权

US09264657B2 Method and apparatus for providing a copy-protected video signal 有权
公开(公告)号：US09264657B2
公开(公告)日：2016-02-16
申请号：US13231724
申请日：2011-09-13
申请人： Baolin Tan , Mazen Abdin
发明人： Baolin Tan , Mazen Abdin
IPC分类号： H04N5/93 , H04N5/913 , 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 added to each line of the signal throughout both the visible picture region and throughout the vertical blanking region, as well as a first modulated wave-form added to the vertical synchronization pulses of the signal and a second modulated wave-form added to several lines of the picture signal before the vertical blanking section. The presence of all three of these features together has been found to 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.

4. 发明授权

US09002006B2 Efficient broadcast entitlement management message delivery mechanism using a scheduled delivery window 有权
标题翻译：有效的广播授权管理消息传递机制使用排定的传送窗口
公开(公告)号：US09002006B2
公开(公告)日：2015-04-07
申请号：US13843974
申请日：2013-03-15
申请人： QUALCOMM Incorporated
发明人： An Mei Chen , Jangwon Lee
IPC分类号： H04N7/169 , H04L29/06 , H04N7/167 , H04N21/2347 , H04N21/262 , H04N21/266 , H04N21/414 , H04N21/4405 , H04N21/4623 , H04N21/6543
CPC分类号： H04N7/169 , H04N7/1675 , H04N21/2347 , H04N21/26266 , H04N21/26606 , H04N21/41407 , H04N21/4405 , H04N21/4623 , H04N21/6543
摘要： Systems and methods include broadcasting an entitlement management message (EMM) in a communication system using a scheduled delivery window. The systems and methods including receiving a EMM broadcast window from a distribution system, listening for the EMM during the EMM broadcast window, and receiving the EMM from the distribution system during the EMM broadcast window.
摘要翻译：系统和方法包括在使用调度的递送窗口的通信系统中广播授权管理消息（EMM）。系统和方法包括从分发系统接收EMM广播窗口，在EMM广播窗口期间收听EMM，以及在EMM广播窗口期间从分发系统接收EMM。

5. 发明授权

US08988514B2 Digital cinema anti-camcording method and apparatus based on image frame post-sampling 有权
标题翻译：基于图像帧后采样的数字电影反录像方法和装置
公开(公告)号：US08988514B2
公开(公告)日：2015-03-24
申请号：US12449818
申请日：2007-03-06
申请人： Emil Tchoukaleysky
发明人： Emil Tchoukaleysky
IPC分类号： H04N7/169 , H04N5/913 , H04N9/31 , H04N21/414 , H04N21/4223 , H04N21/4402 , G03B21/32
CPC分类号： H04N5/913 , H04N9/3123 , H04N9/3179 , H04N9/3197 , H04N21/41415 , H04N21/4223 , H04N21/4402 , H04N2005/91392
摘要： A method and apparatus for projecting digital video content and for discouraging recording of the projected video content using a video camera or other sampling recording device are described, including accepting a frame of digital video content, time-shifting a bit-plane of the frame of the digital video content at a phase difference, projecting the time-shifted frame, repeating the accepting, time-shifting and projecting acts for a number of frames, adjusting the phase difference and repeating all of the above acts. Also described are a method and apparatus for generating an indication of a mid-scale level bit-plane of a frame of digital video content, including accepting a frame of digital video content, accepting a selection of mid-scale level bit-plane of the frame and generating an indication of the selection of the mid-scale level bit-plane of the frame. Time-shifting bit-planes of a frame generates in the recorded video a flicker.
摘要翻译：描述了一种用于投影数字视频内容并且使用摄像机或其他采样记录装置来阻止投影视频内容的记录的方法和装置，包括接收数字视频内容的帧，将帧的位平面进行时移相位差的数字视频内容，投影时移帧，重复接收，时移和投影行为多个帧，调整相位差并重复所有上述动作。还描述了一种用于生成数字视频内容的帧的中档级别位平面的指示的方法和装置，包括接受数字视频内容的帧，接受数字视频内容的帧的等级位平面的选择并且生成帧的中等级别位平面的选择的指示。帧的时移位平面在记录的视频中产生闪烁。

6. 发明授权

US08553881B2 Composite masking system and method for improving invisibility of high-definition video watermarking 有权
标题翻译：用于改善高清视频水印隐形性的复合掩蔽系统和方法
公开(公告)号：US08553881B2
公开(公告)日：2013-10-08
申请号：US13180534
申请日：2011-07-11
申请人： Heung Kyu Lee , Tae Woo Oh , Kyung Su Kim , Ji Won Lee , Hee Dong Kim
发明人： Heung Kyu Lee , Tae Woo Oh , Kyung Su Kim , Ji Won Lee , Hee Dong Kim
IPC分类号： H04N7/169 , G06K9/00
CPC分类号： H04N21/8358 , G06T1/0028 , G06T1/0064 , G06T2201/0051 , G06T2201/0202
摘要： A composite masking system and method for improving the invisibility of high-definition video watermarking. The composite masking system includes a watermark generation module, a mask generation module, and watermark embedment means. The watermark generation module generates a basic watermark pattern using a private key, and generate a watermark pattern by repeatedly extending the basic watermark pattern. The mask generation module generates a Noise Visibility Function (NVF) mask using NVF masking means, an adaptive dithering mask using adaptive dithering masking means, and a contour mask using contour masking means. The watermark embedment means generates a composite mask by multiplying the NVF mask, the adaptive dithering mask and the contour mask together, multiplying the composite mask and the extended watermark pattern together, and embedding the result of the second multiplication in the luminance channel of an original image.
摘要翻译：一种用于提高高清视频水印隐形性的复合掩蔽系统和方法。复合掩蔽系统包括水印生成模块，掩码生成模块和水印嵌入装置。水印生成模块使用专用密钥生成基本水印图案，并通过重复地扩展基本水印图案来生成水印图案。掩模产生模块使用NVF掩蔽装置，使用自适应抖动掩蔽装置的自适应抖动掩模和使用轮廓掩蔽装置的轮廓掩模来生成噪声可见性功能（NVF）掩模。水印嵌入装置通过将NVF掩模，自适应抖动掩模和轮廓掩模相乘来生成复合掩码，将合成掩码和扩展水印图案相乘，并将第二乘法的结果嵌入原始图像的亮度通道中图片。

7. 发明授权

US06859536B1 Video-signal output apparatus and video-signal input apparatus 失效
标题翻译：视频信号输出装置和视频信号输入装置
公开(公告)号：US06859536B1
公开(公告)日：2005-02-22
申请号：US09568266
申请日：2000-05-10
申请人： Teruhiko Kori
发明人： Teruhiko Kori
IPC分类号： H04N7/167 , H04N7/169 , H04N21/4363 , H04N21/4405 , H04N21/4408 , H04N7/16
CPC分类号： H04N7/1696
摘要： A video-signal output apparatus performs scrambling, and a video-signal input apparatus performs descrambling. The scrambling and the descrambling are performed so that signal lines are shifted for each period corresponding to one horizontal scanning interval of analog component video signals which corresponds to a horizontal scanning period or for each period which is n times one horizontal scanning period (where n represents a natural number not less than 2). The signal lines are also shifted with timing in a horizontal blanking period of the analog component video signals. When authorization is established as a result of mutual communication between the output apparatus and the input apparatus, scramble and descramble patterns each are determined based on mutually obtained information in the mutual communication.
摘要翻译：视频信号输出装置执行加扰，视频信号输入装置进行解扰。执行加扰和解扰，使得信号线在对应于对应于水平扫描周期的模拟分量视频信号的一个水平扫描间隔的每个周期或对于n个一个水平扫描周期的每个周期（其中n表示自然数不少于2）。在模拟分量视频信号的水平消隐期间，信号线也随时间偏移。当作为输出装置和输入装置之间的相互通信的结果建立授权时，基于相互通信中相互获得的信息来确定加扰和解扰模式。

8. 发明授权

US06839433B1 Method and apparatus for generating a signal that defeats illegal cable decoders 有权
标题翻译：用于产生消除非法电缆解码器的信号的方法和装置
公开(公告)号：US06839433B1
公开(公告)日：2005-01-04
申请号：US09357691
申请日：1999-07-20
申请人： Ronald Quan
发明人： Ronald Quan
IPC分类号： H04N7/169 , H04N7/167
CPC分类号： H04N7/1693
摘要： Illegal cable decoders, i.e., black boxes, are defeated by adding, inserting and/or superimposing an added signal onto an already scrambled video signal, which added signal is capable of disrupting the operation of the illegal cable decoder. As a result of the added signal, the illegal cable decoder outputs an unstable or unviewable picture or signal and concealment is maintained. In another embodiment of an added signal, a modulated signal with a range from about blanking level to about peak white level is added, inserted and/or superimposed on the unstable scrambled video signal in the vertical blanking interval and/or its vicinity. As a result, the illegal cable decoder is caused to generate some horizontal instabilities at its output. For those illegal cable decoders that utilize color burst as a means to decode, methods to defeat these consist of filling in color burst in the vertical blanking interval area and/or modifying the position of the correct burst while adding an incorrect frequency burst to defeat the illegal cable decoder.
摘要翻译：非法的电缆解码器，即黑盒子，通过将附加的信号添加，插入和/或叠加到已经加扰的视频信号上而被击败，所附加的信号能够中断非法电缆解码器的操作。作为附加信号的结果，非法电缆解码器输出不稳定或不可见的图像或信号，并且保持隐藏。在附加信号的另一个实施例中，在垂直消隐间隔和/或其附近，将具有从大约消隐电平到大约峰值白电平的范围的调制信号相加，插入和/或叠加在不稳定的加扰视频信号上。结果，非法电缆解码器在其输出端产生一些水平不稳定性。对于使用彩色突发作为解码手段的那些非法电缆解码器，打败这些的方法包括在垂直消隐间隔区域填充彩色脉冲串和/或修改正确的脉冲串的位置，同时增加不正确的频率脉冲串以打败非法电缆解码器。

9. 发明授权

US6041160A Method and apparatus for picture encoding and decoding 失效
标题翻译：图像编码和解码的方法和装置
公开(公告)号：US6041160A
公开(公告)日：2000-03-21
申请号：US879038
申请日：1997-06-19
申请人： Yoichi Yagasaki , Katsumi Tahara
发明人： Yoichi Yagasaki , Katsumi Tahara
IPC分类号： H04N5/92 , G06F21/10 , G06T9/00 , H04N7/167 , H04N7/169 , H04N7/50 , H04N9/804 , H04N19/00 , H04N19/423 , H04N19/46 , H04N19/70 , H04N19/85 , H04N21/4367 , H04N5/91
CPC分类号： H04N9/8042 , H04N19/61
摘要： A picture encoding method in which the picture signal can be scrambled without deteriorating the picture quality of the encoded picture of the MPEG system. A B-picture f the input picture signal is given random offset in the horizontal direction on the slice basis and encoded by an MPEG encoding device. An offset amount is written as a key on the disc along with the encoded data. A decoding device corrects the offset amount in the slice basis using the key of the reproduced signal. The picture signal can be scrambled in this manner without modifying the MPEG system.
摘要翻译：可以对图像信号进行加扰而不恶化MPEG系统的编码图像的图像质量的图像编码方法。输入图像信号的B图像在片基上在水平方向上被赋予随机偏移量，并由MPEG编码装置编码。偏移量与编码数据一起写入盘上的键。解码装置使用再生信号的键来校正切片的偏移量。可以以这种方式对图像信号进行加扰而不修改MPEG系统。

10. 发明授权

US5757910A Apparatus for preventing illegal copying of a digital broadcasting signal 失效
标题翻译：用于防止非法复制数字广播信号的装置
公开(公告)号：US5757910A
公开(公告)日：1998-05-26
申请号：US661661
申请日：1996-06-11
申请人： Chai Yeol Rim
发明人： Chai Yeol Rim
IPC分类号： H04N5/913 , H04N7/167 , H04N7/169 , H04N21/4408
CPC分类号： H04N21/4408 , H04N5/913 , H04N7/1675 , H04N7/169 , H04N2005/91314 , H04N2005/91385
摘要： An apparatus for preventing illegal copying of a digital broadcasting signal, comprises a transmission section for generating a copy prevention signal to determine a display time of each field of a digital video signal on a screen, compressing the digital video signal and the copy prevention signal, modulating the compressed copy prevention signal and digital video signal into the digital broadcasting signal and transmitting the digital broadcasting signal through a transmitting antenna, and a reception section for receiving the digital broadcasting signal transmitted from the transmission section through a receiving antenna, demodulating the received digital broadcasting signal into the digital video signal, expanding the demodulated digital video signal, detecting the copy prevention signal from the expanded digital video signal, generating horizontal and vertical synchronous signals in response to the detected copy prevention signal and displaying the expanded digital video signal on the screen synchronously with the generated horizontal and vertical synchronous signals.
摘要翻译：一种用于防止数字广播信号的非法复制的装置，包括：发送部分，用于产生防复制信号，以确定屏幕上的数字视频信号的每个场的显示时间，压缩数字视频信号和防复制信号; 将压缩防复制信号和数字视频信号调制成数字广播信号，并通过发送天线发送数字广播信号;以及接收部分，用于通过接收天线接收从发送部分发送的数字广播信号，解调所接收的数字广播信号到数字视频信号中，扩展解调的数字视频信号，从扩展的数字视频信号中检测防复制信号，响应于检测到的防复制信号产生水平和垂直同步信号，并显示扩展的数字视频信号o 在屏幕上同步产生的水平和垂直同步信号。

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