发明名称 |
Recording a coded identification number in frames of a moving picture |
摘要 |
<p>A method of applying a security code to a moving picture comprises recording a plurality of separate coded symbols, each symbol being recorded in a separate frame of the moving picture. The coded symbols may comprise marks which look like defects or artefacts in the picture. Each of the symbols may represent one digit of a multi-digit print identification number. A different identification number may be used for each copy and a record may be kept of the identification number for each copy and the destination to which it was sent. The origin of a counterfeit copy can therefore be traced by determining the identification number of the copy. Also described is a method of identifying a copy of an audio-visual program by selecting locations in each copy of the program such that the locations form a unique pattern in each copy and altering images appearing in the selected locations.</p> |
申请公布号 |
GB2415853(A) |
申请公布日期 |
2006.01.04 |
申请号 |
GB20050018584 |
申请日期 |
2004.09.08 |
申请人 |
DELUXE LABORATORIES, INC |
发明人 |
WILLIAM CLARK;JEFFREY H DEWOLDE;JOSEPH C WARY |
分类号 |
G06T1/00;G03B17/24;G03B27/475;H04N1/32;H04N5/262 |
主分类号 |
G06T1/00 |
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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