发明名称 |
VIDEO SCRAMBLING APPARATUS & METHOD BASED ON SPACE FILLING CURVES |
摘要 |
A method of encrypting a video signal employing a pseudo-random Space Filling Curve having a highly irregular scanning pattern for scanning the pixel addresses of a video picture stored in a frame buffer. The method is used with a video scrambler/descrambler device and is characterized by a much higher cryptographic strength than existing techniques, which is not subject to simple correlation attacks by comparing and matching of line portions. In addition, the method features a reduction in the video signal bandwidth for typical pictures. |
申请公布号 |
EP0304217(A3) |
申请公布日期 |
1991.12.11 |
申请号 |
EP19880307385 |
申请日期 |
1988.08.10 |
申请人 |
YEDA RESEARCH AND DEVELOPMENT COMPANY, LTD. |
发明人 |
MATIAS YOSSI;SHAMIR ADI |
分类号 |
G06F21/10;H04N7/167;H04N7/169 |
主分类号 |
G06F21/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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