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1. 发明授权

US5841863A Method and apparatus for scrambling and descrambling of video signals with edge fill 失效
公开(公告)号：US5841863A
公开(公告)日：1998-11-24
申请号：US401015
申请日：1995-03-08
申请人： John O. Ryan , James R. Holzgrafe
发明人： John O. Ryan , James R. Holzgrafe
IPC分类号： H04H20/00 , H04K1/00 , H04K1/02 , H04L9/00 , H04N7/169
CPC分类号： H04N7/1696 , H04N7/1693
摘要： A video-scrambling system induces a random wobble i.e., time shifting, in the location of active portion of the video frame, without affecting the horizontal sync signal and colorburst in each video line, thus providing both security and concealment. The security is enhanced by filling in the gap between the nominal beginning of active video and the actual beginning of active video with a synthesized video signal which replicates the adjacent active video using a digitally generated filling pattern. Also, a random noise overlay further conceals the location of the gap. Additional concealment is provided by wiggling in time the location of the horizontal sync signal using one or two frequencies and also by randomly altering the location of the vertical sync signal. The NTSC digital encoding in accordance with the invention is simplified by using only two channels, chrominance and luminance, and by a heterodyne circuit for chrominance stability. NTSC encoding is enhanced by providing detail normally lost, by use of the chroma channel. Additionally, a non-standard video signal may be provided with a portion of the colorburst on the front porch of the horizontal blanking, thus allowing use of a relatively simple decoder.

2. 发明授权

US06542609B1 Method and apparatus for scrambling a high definition television signal 有权
标题翻译：用于扰乱高分辨率电视信号的方法和装置
公开(公告)号：US06542609B1
公开(公告)日：2003-04-01
申请号：US09483594
申请日：2000-01-14
申请人： John O. Ryan , James R. Holzgrafe , Mark A. Hollar
发明人： John O. Ryan , James R. Holzgrafe , Mark A. Hollar
IPC分类号： H04N7167
CPC分类号： H04N7/1696 , H04N5/913 , H04N7/015 , H04N7/08 , H04N7/088 , H04N7/167 , H04N7/1693 , H04N21/835 , H04N2005/91357
摘要： Method and apparatus for scrambling a high definition television signal to discourage unauthorized recording of same. While recording per se is not prevented, the resulting recorded signal is rendered unusable due to an induced “wobble” between the active video and the associated sync pulses. The scrambled television signal is readily viewable on a compliant high definition television set which descrambles the HDTV signal using an encoded indication of the amount of wobble accompanying the HDTV signal. Also provided is a special interface to prevent unauthorized persons from using the indication of the amount of wobble so as to defeat the scrambling. Also provided are method and apparatus for defeating the scrambling method and hence allowing recording of the scrambled video signal.
摘要翻译：用于扰乱高分辨率电视信号以阻止其未经授权记录的方法和装置。虽然不能防止记录本身，但是由于在活动视频和相关联的同步脉冲之间引起的“摆动”，所产生的记录信号变得不可用。加扰的电视信号可以在兼容的高分辨率电视机上容易地观看，该电视机使用伴随HDTV信号的摆动量的编码指示对HDTV信号进行解扰。还提供了防止未经授权的人使用摆动量的指示以防止扰乱的特殊接口。还提供了用于消除加扰方法并因此允许记录加扰视频信号的方法和装置。

3. 发明授权

US5844988A Method and apparatus for scrambling and descrambling of video signal with edge fill 失效
公开(公告)号：US5844988A
公开(公告)日：1998-12-01
申请号：US400831
申请日：1995-03-08
申请人： John O. Ryan , James R. Holzgrafe
发明人： John O. Ryan , James R. Holzgrafe
IPC分类号： H04H20/00 , H04K1/00 , H04K1/02 , H04L9/00 , H04N7/169
CPC分类号： H04N7/1696 , H04N7/1693
摘要： A video-scrambling system induces a random wobble i.e., time shifting, in the location of active portion of the video frame, without affecting the horizontal sync signal and colorburst in each video line, thus providing both security and concealment. The security is enhanced by filling in the gap between the nominal beginning of active video and the actual beginning of active video with a synthesized video signal which replicates the adjacent active video using a digitally generated filling pattern. Also, a random noise overlay further conceals the location of the gap. Additional concealment is provided by wiggling in time the location of the horizontal sync signal using one or two frequencies and also by randomly altering the location of the vertical sync signal. The NTSC digital encoding in accordance with the invention is simplified by using only two channels, chrominance and luminance, and by a heterodyne circuit for chrominance stability. NTSC encoding is enhanced by providing detail normally lost, by use of the chroma channel. Additionally, a non-standard video signal may be provided with a portion of the colorburst on the front porch of the horizontal blanking, thus allowing use of a relatively simple decoder.

4. 发明授权

US07274790B2 Scrambling and descrambling a high definition TV signal 有权
标题翻译：对高分辨率电视信号进行加扰和解扰
公开(公告)号：US07274790B2
公开(公告)日：2007-09-25
申请号：US10356327
申请日：2003-01-31
申请人： John O. Ryan , James R. Holzgrafe , Mark A. Hollar
发明人： John O. Ryan , James R. Holzgrafe , Mark A. Hollar
IPC分类号： H04L9/00 , H04N7/167
CPC分类号： H04N7/1696 , H04N5/913 , H04N7/015 , H04N7/08 , H04N7/088 , H04N7/167 , H04N7/1693 , H04N21/835 , H04N2005/91357
摘要： Method and apparatus for scrambling a high definition television signal to discourage unauthorized recording of same. While recording per se is not prevented, the resulting recorded signal is rendered unusable due to an induced “wobble” between the active video and the associated sync pulses. The scrambled television signal is readily viewable on a compliant high definition television set which descrambles the HDTV signal using an encoded indication of the amount of wobble accompanying the HDTV signal. Also provided is a special interface to prevent unauthorized persons from using the indication of the amount of wobble so as to defeat the scrambling. Also provided are method and apparatus for defeating the scrambling method and hence allowing recording of the scrambled video signal.
摘要翻译：用于扰乱高分辨率电视信号以阻止其未经授权记录的方法和装置。虽然不能防止记录本身，但是由于在活动视频和相关联的同步脉冲之间引起的“摆动”，所产生的记录信号变得不可用。加扰的电视信号可以在兼容的高分辨率电视机上容易地观看，该电视机使用伴随HDTV信号的摆动量的编码指示对HDTV信号进行解扰。还提供了防止未经授权的人使用摆动量的指示以防止扰乱的特殊接口。还提供了用于消除加扰方法并因此允许记录加扰视频信号的方法和装置。

5. 发明授权

US06950520B1 Method and apparatus for carrying data in a video signal so that the data is not recorded 有权
标题翻译：用于在视频信号中携带数据以便不记录数据的方法和装置
公开(公告)号：US06950520B1
公开(公告)日：2005-09-27
申请号：US09490836
申请日：2000-01-25
申请人： John O. Ryan , James R. Holzgrafe , Mark A. Hollar
发明人： John O. Ryan , James R. Holzgrafe , Mark A. Hollar
IPC分类号： H04L1/00 , H04L9/00 , H04N5/913 , H04N7/167 , H04N7/171
CPC分类号： H04N21/4334 , H04N5/913 , H04N7/1675 , H04N7/1713 , H04N21/2347 , H04N21/4405 , H04N2005/91307 , H04N2005/91364
摘要： A method and apparatus for modifying a video signal to allow it to carry encoded data which is detectable at a suitably compliant receiver but is not recorded by a conventional video recorder. One application is to carry a descrambling key to prevent useful recording (but not viewing) of a scrambled television signal since the key will not be recorded. This encoded “hidden” data is not recorded by the conventional video recorders because, for instance, it is located in the vertical or horizontal blanking intervals of the video signal, or is carried by a high frequency carrier signal, or is expressed by phase modulation of the video signal's synchronization pulses.
摘要翻译：一种用于修改视频信号以允许其携带在适当兼容的接收机处可检测但不由常规录像机记录的编码数据的方法和装置。一个应用是携带解扰密钥以防止加密电视信号的有用记录（但不观看），因为该密钥将不被记录。这种编码的“隐藏”数据不被常规视频记录器记录，因为例如它位于视频信号的垂直或水平消隐间隔中，或由高频载波信号承载，或由相位调制的视频信号的同步脉冲。

6. 发明授权

US5504815A Method and apparatus for scrambling and descrambling 失效
标题翻译：用于加扰和解扰的方法和装置
公开(公告)号：US5504815A
公开(公告)日：1996-04-02
申请号：US400833
申请日：1995-03-08
申请人： John O. Ryan , Ronald Quan , James R. Holzgrafe , Peter J. Wonfor
发明人： John O. Ryan , Ronald Quan , James R. Holzgrafe , Peter J. Wonfor
IPC分类号： H04H20/00 , H04K1/00 , H04K1/02 , H04L9/00 , H04N7/169 , H04N9/78
CPC分类号： H04N7/1696 , H04N7/1693
摘要： A video-scrambling system induces a random wobble i.e., time shifting, in the location of active portion of the video frame, without affecting the horizontal sync signal and colorburst in each video line, thus providing both security and concealment. The security is enhanced by filling in the gap between the nominal beginning of active video and the actual beginning of active video with a synthesized video signal which replicates the adjacent active video using a digitally generated filling pattern. Also, a random noise overlay further conceals the location of the gap. Additional concealment is provided by wiggling in time the location of the horizontal sync signal using one or two frequencies and also by randomly altering the location of the vertical sync signal. The NTSC digital encoding in accordance with the invention is simplified by using only two channels, chrominance and luminance, and by a heterodyne circuit for chrominance stability. NTSC encoding is enhanced by providing detail normally lost, by use of the chroma channel. Additionally, a non-standard video signal may be provided with a portion of the colorburst on the front porch of the horizontal blanking, thus allowing use of a relatively simple decoder.
摘要翻译：视频加扰系统在视频帧的有效部分的位置处引起随机摆动，即时移，而不影响每个视频行中的水平同步信号和色突，从而提供安全性和隐藏性。通过使用使用数字生成的填充模式复制相邻活动视频的合成视频信号，填充活动视频的标称开始与有效视频的实际开始之间的间隙来增强安全性。此外，随机噪声叠加进一步隐藏间隙的位置。通过使用一个或两个频率在时间上摆动水平同步信号的位置并且还通过随机改变垂直同步信号的位置来提供额外的隐藏。根据本发明的NTSC数字编码通过仅使用两个通道，色度和亮度以及通过外差电路来实现色度稳定性被简化。通过使用色度通道提供通常丢失的细节来增强NTSC编码。此外，非标准视频信号可以在水平消隐的前沿上提供一部分色彩，从而允许使用相对简单的解码器。

7. 发明授权

US5608799A Method and apparatus for scrambling and descrambling of video signal with edge fill 失效
标题翻译：用于边缘填充的视频信号的加扰和解扰的方法和装置
公开(公告)号：US5608799A
公开(公告)日：1997-03-04
申请号：US401014
申请日：1995-03-08
申请人： John O. Ryan , Ronald Quan , James R. Holzgrafe , Peter J. Wonfor
发明人： John O. Ryan , Ronald Quan , James R. Holzgrafe , Peter J. Wonfor
IPC分类号： H04H20/00 , H04K1/00 , H04K1/02 , H04L9/00 , H04N7/169
CPC分类号： H04N7/1696 , H04N7/1693
摘要： A video-scrambling system induces a random wobble i.e., time shifting, in the location of active portion of the video frame, without affecting the horizontal sync signal and colorburst in each video line, thus providing both security and concealment. The security is enhanced by filling in the gap between the nominal beginning of active video and the actual beginning of active video with a synthesized video signal which replicates the adjacent active video using a digitally generated filling pattern. Also, a random noise overlay further conceals the location of the gap. Additional concealment is provided by wiggling in time the location of the horizontal sync signal using one or two frequencies and also by randomly altering the location of the vertical sync signal. The NTSC digital encoding in accordance with the invention is simplified by using only two channels, chrominance and luminance, and by a heterodyne circuit for chrominance stability. NTSC encoding is enhanced by providing detail normally lost, by use of the chroma channel. Additionally, a non-standard video signal may be provided with a portion of the colorburst on the front porch of the horizontal blanking, thus allowing use of a relatively simple decoder.
摘要翻译：视频加扰系统在视频帧的有效部分的位置处引起随机摆动，即时移，而不影响每个视频行中的水平同步信号和色突，从而提供安全性和隐藏性。通过使用使用数字生成的填充模式复制相邻活动视频的合成视频信号，填充活动视频的标称开始与有效视频的实际开始之间的间隙来增强安全性。此外，随机噪声叠加进一步隐藏间隙的位置。通过使用一个或两个频率在时间上摆动水平同步信号的位置并且还通过随机改变垂直同步信号的位置来提供额外的隐藏。根据本发明的NTSC数字编码通过仅使用两个通道，色度和亮度以及通过外差电路来实现色度稳定性被简化。通过使用色度通道提供通常丢失的细节来增强NTSC编码。此外，非标准视频信号可以在水平消隐的前沿上提供一部分色彩，从而允许使用相对简单的解码器。

8. 发明授权

US5581307A Method and apparatus for scrambling and descrambling of video signals with edge fill 失效
标题翻译：用于边缘填充的视频信号的加扰和解扰的方法和装置
公开(公告)号：US5581307A
公开(公告)日：1996-12-03
申请号：US401016
申请日：1995-03-08
申请人： John O. Ryan , James R. Holzgrafe
发明人： John O. Ryan , James R. Holzgrafe
IPC分类号： H04H20/00 , H04K1/00 , H04K1/02 , H04L9/00 , H04N7/169 , H04N9/66 , H04N9/78
CPC分类号： H04N7/1696 , H04N7/1693
摘要： A video-scrambling system induces a random wobble i.e., time shifting, in the location of active portion of the video frame, without affecting the horizontal sync signal and colorburst in each video line, thus providing both security and concealment. The security is enhanced by filling in the gap between the nominal beginning of active video and the actual beginning of active video with a synthesized video signal which replicates the adjacent active video using a digitally generated filling pattern. Also, a random noise overlay further conceals the location of the gap. Additional concealment is provided by wiggling in time the location of the horizontal sync signal using one or two frequencies and also by randomly altering the location of the vertical sync signal. The NTSC digital encoding in accordance with the invention is simplified by using only two channels, chrominance and luminance, and by a heterodyne circuit for chrominance stability. NTSC encoding is enhanced by providing detail normally lost, by use of the chroma channel. Additionally, a non-standard video signal may be provided with a portion of the colorburst on the front porch of the horizontal blanking, thus allowing use of a relatively simple decoder.
摘要翻译：视频加扰系统在视频帧的有效部分的位置处引起随机摆动，即时移，而不影响每个视频行中的水平同步信号和色突，从而提供安全性和隐藏性。通过使用使用数字生成的填充模式复制相邻活动视频的合成视频信号，填充活动视频的标称开始与有效视频的实际开始之间的间隙来增强安全性。此外，随机噪声叠加进一步隐藏间隙的位置。通过使用一个或两个频率在时间上摆动水平同步信号的位置并且还通过随机改变垂直同步信号的位置来提供额外的隐藏。根据本发明的NTSC数字编码通过仅使用两个通道，色度和亮度以及通过外差电路来实现色度稳定性被简化。通过使用色度通道提供通常丢失的细节来增强NTSC编码。此外，非标准视频信号可以在水平消隐的前沿上提供一部分色彩，从而允许使用相对简单的解码器。

9. 发明授权

US5579390A Method and apparatus for vertically scrambling and descrambling of video signals 失效
标题翻译：用于垂直加扰和解扰视频信号的方法和装置
公开(公告)号：US5579390A
公开(公告)日：1996-11-26
申请号：US400832
申请日：1995-03-08
申请人： John O. Ryan , Ronald Quan , James R. Holzgrafe , Peter J. Wonfor
发明人： John O. Ryan , Ronald Quan , James R. Holzgrafe , Peter J. Wonfor
IPC分类号： H04H20/00 , H04K1/00 , H04K1/02 , H04L9/00 , H04N7/169
CPC分类号： H04N7/1696 , H04N7/1693
摘要： A video-scrambling system induces a random wobble i.e., time shifting, in the location of active portion of the video frame, without affecting the horizontal sync signal and colorburst in each video line, thus providing both security and concealment. The security is enhanced by filling in the gap between the nominal beginning of active video and the actual beginning of active video with a synthesized video signal which replicates the adjacent active video using a digitally generated filling pattern. Also, a random noise overlay further conceals the location of the gap. Additional concealment is provided by wiggling in time the location of the horizontal sync signal using one or two frequencies and also by randomly altering the location of the vertical sync signal. The NTSC digital encoding in accordance with the invention is simplified by using only two channels, chrominance and luminance, and by a heterodyne circuit for chrominance stability. NTSC encoding is enhanced by providing detail normally lost, by use of the chroma channel. Additionally, a non-standard video signal may be provided with a portion of the colorburst on the front porch of the horizontal blanking, thus allowing use of a relatively simple decoder.
摘要翻译：视频加扰系统在视频帧的有效部分的位置处引起随机摆动，即时移，而不影响每个视频行中的水平同步信号和色突，从而提供安全性和隐藏性。通过使用使用数字生成的填充模式复制相邻活动视频的合成视频信号，填充活动视频的标称开始与有效视频的实际开始之间的间隙来增强安全性。此外，随机噪声叠加进一步隐藏间隙的位置。通过使用一个或两个频率在时间上摆动水平同步信号的位置并且还通过随机改变垂直同步信号的位置来提供额外的隐藏。根据本发明的NTSC数字编码通过仅使用两个通道，色度和亮度以及通过外差电路来实现色度稳定性被简化。通过使用色度通道提供通常丢失的细节来增强NTSC编码。此外，非标准视频信号可以在水平消隐的前沿上提供一部分色彩，从而允许使用相对简单的解码器。

10. 发明授权

US5438620A Method and apparatus for scrambling and descrambling of video signal with edge fill 失效
标题翻译：用于边缘填充的视频信号的加扰和解扰的方法和装置
公开(公告)号：US5438620A
公开(公告)日：1995-08-01
申请号：US202349
申请日：1994-02-28
申请人： John O. Ryan , Ronald Quan , James R. Holzgrafe , Peter J. Wonfor
发明人： John O. Ryan , Ronald Quan , James R. Holzgrafe , Peter J. Wonfor
IPC分类号： H04H20/00 , H04K1/00 , H04K1/02 , H04L9/00 , H04N7/169 , H04N7/167
CPC分类号： H04N7/1696 , H04N7/1693
摘要： A video-scrambling system induces a random wobble i.e., time shifting, in the location of active portion of the video frame, without affecting the horizontal sync signal and colorburst in each video line, thus providing both security and concealment. The security is enhanced by filling in the gap between the nominal beginning of active video and the actual beginning of active video with a synthesized video signal which replicates the adjacent active video using a digitally generated filling pattern. Also, a random noise overlay further conceals the location of the gap. Additional concealment is provided by wiggling in time the location of the horizontal sync signal using one or two frequencies and also by randomly altering the location of the vertical sync signal. The NTSC digital encoding in accordance with the invention is simplified by using only two channels, chrominance and luminance, and by a heterodyne circuit for chrominance stability. NTSC encoding is enhanced by providing detail normally lost, by use of the chroma channel. Additionally, a non-standard video signal may be provided with a portion of the colorburst on the front porch of the horizontal blanking, thus allowing use of a relatively simple decoder.
摘要翻译：视频加扰系统在视频帧的有效部分的位置处引起随机摆动，即时移，而不影响每个视频行中的水平同步信号和色突，从而提供安全性和隐藏性。通过使用使用数字生成的填充模式复制相邻活动视频的合成视频信号，填充活动视频的标称开始与有效视频的实际开始之间的间隙来增强安全性。此外，随机噪声叠加进一步隐藏间隙的位置。通过使用一个或两个频率在时间上摆动水平同步信号的位置并且还通过随机改变垂直同步信号的位置来提供额外的隐藏。根据本发明的NTSC数字编码通过仅使用两个通道，色度和亮度以及通过外差电路来实现色度稳定性被简化。通过使用色度通道提供通常丢失的细节来增强NTSC编码。此外，非标准视频信号可以在水平消隐的前沿上提供一部分色彩，从而允许使用相对简单的解码器。

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