发明名称 |
Subliminal message protection |
摘要 |
The present invention relates to a method and to a system for detecting a first context change between two frames. When a second context change between a further two frames occurs within a predetermined time interval, the frames accommodated within the two context changes are defined as a subliminal message. An alarm is sent to an observer upon detection of a subliminal message. |
申请公布号 |
AU5076398(A) |
申请公布日期 |
1998.06.10 |
申请号 |
AU19980050763 |
申请日期 |
1997.11.13 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON |
发明人 |
MAGNUS JANDEL |
分类号 |
G06T7/20;H04N5/14;H04N5/445;H04N7/08;H04N7/081;H04N7/52 |
主分类号 |
G06T7/20 |
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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