Terminal Display Refresh Control to Thwart Secret Photography
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing measures for preventing secret photography are passive and ineffective in protecting displayed content on mobile intelligent devices, as they cannot fundamentally prevent the unauthorized capture of sensitive information.
Innovation Solution
A method involving the terminal to display images at varying refresh rates and superimpose noise parameters on sensitive areas, dividing the image into multiple frames with higher refresh and frame rates to confuse secret photography devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If existing monitoring and alarm measures are used to prevent secret photography, then warning capability is improved, but fundamental protection of displayed content is worsened
Solution Approach 1:
The patent applies preliminary anti-action by proactively disrupting the secret photography process before it can capture useful information. Instead of merely warning about potential photography, the system actively interferes with the photography act itself through screen shaking, noise addition, and content scrambling, thereby preventing the harmful effect of information leakage while maintaining the protective function.
2Ease of operation
If screen content is displayed clearly for presentation and communication, then usability is improved, but vulnerability to secret photography is worsened
Solution Approach 1:
The patent applies dynamics by making the display content dynamic and unstable during the photography process. The screen content continuously changes through shaking effects, noise addition, and scrambling operations, preventing static capture of sensitive information while maintaining normal display functionality for legitimate viewing purposes.
Solution Approach 2:
The patent applies periodic action by implementing repeated anti-photography operations at specific intervals during display. The system periodically detects potential photography attempts and executes countermeasures such as adding noise, scrambling content, and shaking the screen at regular intervals, creating a rhythmic pattern of protection that maintains usability while preventing secret capture.
3Reliability
If noise parameters are superimposed on displayed content at high frame rates, then content protection is improved, but power consumption is worsened
Solution Approach 1:
The patent applies partial or excessive action by implementing noise addition and content scrambling only when secret photography is detected or suspected, rather than continuously. The system activates these energy-intensive protective measures selectively during threatened periods, providing sufficient protection effectiveness while minimizing unnecessary power consumption during normal display operations.
Data Source
Figure 1
Figure 2
Figure 3(a)
AI summary
Embodiments of this application relate to the field of image processing technologies, and provide an image display method and a terminal, to effectively protect displayed content on the terminal and reduce a possibility of leakage of the displayed content on the terminal. A specific solution includes: displaying, by a terminal, a first image on a display at a first screen refresh rate, where an output frame rate of the first image is a first frame rate; and displaying, by the terminal, a second image on the display after detecting that a preset condition is met. A noise parameter is superimposed on at least a part of the second image, the at least a part on which the noise parameter is superimposed is displayed at a second screen refresh rate, and an output frame rate of the at least a part is a second frame rate. The second image includes a plurality of frames of noise-added sub-images. The second frame rate is higher than the first frame rate, and the second screen refresh rate is higher than the first screen refresh rate.