Frequency difference-based screen secret photography prevention device

Abstract

The invention discloses a frequency difference-based screen secret photography prevention device. The device is characterized by comprising a controllable display window; the controllable display window is divided into N different regions; and in the N regions, the updating frequency of at least one region is not equal to that of each of other regions, and f is greater than f1 and less than f2, wherein f is the updating frequencies of all the regions obtained by dividing the controllable display window, f1 is a human eye identification frequency, f2 is a camera shutter frequency, and N is not smaller than 2. According to the device, the contents displayed in a display screen can be clearly seen by human eyes, but a camera cannot shoot the contents to obtain a complete image, so that active secret photography prevention of image data displayed in the display screen is realized.

Description

technical field [0001] The invention relates to an anti-sneak shot device in the field of information security, in particular to a screen anti-sneak shot device based on frequency difference. Background technique [0002] As the camera functions on various mobile smart devices become more and more powerful, the behavior of secretly taking pictures of the screen becomes more and more hidden and difficult to be detected. Therefore, it is very difficult to protect documents and materials in some occasions where it is required to prohibit taking photos and at the same time need to display and exchange information on a display screen. In particular, important scientific and technological materials, confidential documents, internal information or copyrights of works cannot be effectively prevented from being secretly photographed, which poses a great threat to their protection work. [0003] Most of the existing anti-sneak shooting measures are to monitor the scene and send out a...

AI Technical Summary

Problems solved by technology

[0002] As the camera functions on various mobile smart devices become more and more powerful, the behavior of secretly taking pictures of the screen is becoming more and more hidden and difficult to detect

Therefore, in some occasions where it is required to prohibit taking photos and display and exchange information on a display screen, the protection of documents is very difficult.

In particular, important scientific and technological materials, confidential documents, internal information or copyrights of works cannot be effectively prevented from being secretly photographed, which poses a great threat to their protection work

[0003] Most of the existing anti-sneak shooting measures are to monitor the scene and send out an alarm to remind, but this is a passive measure, which can only give a reminder, but cannot fundamentally prevent the sneak shooting behavior, and the content of the screen is still not effectively protected

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