Device and method for preventing film from being secretly filmed
A film and one-to-one correspondence technology, which is applied in the field of electronic technology application, can solve the problems of destroying the illegal copying of film anti-piracy devices and film anti-piracy methods by film pirate manufacturers, and achieve the goal of preventing pirates from sneaking, high security, and low cost Effect
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[0018] The electric actuator 3 is any actuating device used to be installed with the target device and act by electric drive, thereby driving the target device to move. Preferably, the electric actuator 3 can be a slide rail type, Vibrating or rotating. According to one embodiment of the present invention, the electric actuator 3 is a slide rail type actuator, including a slide rail and a slider that reciprocates on the slide rail, and the infrared laser 2 can be fixedly installed on the slider. The reciprocating movement of the sliding block driven by electricity can make the infrared laser 2 also reciprocate, so that the noise generated by the emitted infrared light on the shadow screen 4 will dynamically shift accordingly.
[0019] According to another embodiment of the present invention, the electric actuator 3 is a vibration-type actuator, the infrared laser 2 can be fixedly installed with the electric actuator 3, and the electric actuator 3 can be driven to vibrate by el...
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