发明名称 |
Detecting and thwarting imaging systems at theatrical performances |
摘要 |
A system and method of detecting and thwarting the use of unauthorized imaging systems at theatrical performances. Sensors are deployed at a theatrical event to detect the IR focusing signal and/or the RF signal of an unauthorized imaging device. De-focusing signals are used to disrupt the auto focus system of imaging devices that do not use IR focusing systems. A thwarting signal comprising invisible light frequencies may be combined to produce a thwarting signal that is received by the CCD of an imaging device as white light thereby rendering the recorded image unusable.
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申请公布号 |
US6861640(B2) |
申请公布日期 |
2005.03.01 |
申请号 |
US20020294273 |
申请日期 |
2002.11.14 |
申请人 |
LIGHT ELLIOTT D.;ROBERTS JON L. |
发明人 |
LIGHT ELLIOTT D.;ROBERTS JON L. |
分类号 |
G03B7/099;G06M7/00;H01J40/14;H04N5/913;(IPC1-7):H01J40/14 |
主分类号 |
G03B7/099 |
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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