| 发明名称 |
Video recording prevention system |
| 摘要 |
A projector has at least four primary color components controlled to produce a metameric effect image which is not perceptible to the human optical system and is perceptible to a video recording device. |
| 申请公布号 |
US8696135(B2) |
申请公布日期 |
2014.04.15 |
| 申请号 |
US20080452308 |
申请日期 |
2008.02.19 |
| 申请人 |
YOON YOUNGSHIK;BOURDON PASCAL;BLONDÉ LAURENT;DOYEN DIDIER;THOMSON LICENSING |
发明人 |
YOON YOUNGSHIK;BOURDON PASCAL;BLONDÉ LAURENT;DOYEN DIDIER |
| 分类号 |
G03B21/00 |
主分类号 |
G03B21/00 |
| 代理机构 |
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