发明名称 |
Imaging prevention method and system |
摘要 |
As an imaging prevention method for interfering unauthorized imaging of a number of visual images projected on a screen, there is employed a method for projecting infrared light to a viewer/audience direction from at least one or more infrared light projector devices. According to the method, infrared light maybe directly incident into an imaging apparatus of a person conducting an unauthorized copying act so as to adversely affect the unauthorized copying.
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申请公布号 |
US6773119(B2) |
申请公布日期 |
2004.08.10 |
申请号 |
US20030454108 |
申请日期 |
2003.06.04 |
申请人 |
SONY CORPORATION |
发明人 |
KIMURA KATSUMI;KATAOKA SHINYA;ZUSHI NORIFUMI;KUDO YUKO |
分类号 |
H04N5/74;(IPC1-7):G03B21/00;G03B21/26 |
主分类号 |
H04N5/74 |
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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