Under-Display Camera Interference Pattern Hashing for Device Verification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems lack a robust and unique security mechanism to verify authorized users and devices, particularly in scenarios where under-display cameras experience interference patterns due to light leakage from display pixels.
Innovation Solution
The implementation of an under-display camera system that captures interference patterns resulting from light leakage when images are output, converts these patterns into a unique hash, and signals this hash to a requesting entity for verification purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If under-display camera is used to capture images, then device integration is improved, but light leakage from display pixels creates interference patterns that degrade image quality
Solution Approach 1:
The patent converts the harmful light leakage interference pattern into a beneficial security feature by capturing the unique interference pattern with the under-display camera, converting it to a hash value, and using it for device verification. This transforms the previously problematic light interference into a unique device fingerprint that enhances security while maintaining the integrated design.
2Reliability
If conventional security mechanisms are used, then user authentication is provided, but robustness and uniqueness are insufficient
Solution Approach 1:
The patent transforms the previously harmful light leakage interference into a unique device fingerprint that serves as a robust security mechanism. Each device's specific hardware configuration produces a distinct interference pattern, providing both reliability and uniqueness for security verification.
Solution Approach 2:
The patent captures the optical interference pattern and converts it to a hash value, creating a digital copy of the physical light interference. This allows the unique hardware characteristics to be replicated and verified across different systems without requiring physical access to the device.
3Reliability
If under-display camera captures light leakage patterns, then unique device signature is generated, but additional security processing steps are required
Solution Approach 1:
The patent converts the complex optical interference pattern into a simplified hash value, creating a compact digital representation that is easy to transmit and verify. This reduces the complexity of security processing while maintaining the reliability of device verification.
Solution Approach 2:
The patent transforms the interference pattern from its original complex optical form into a standardized hash parameter that can be easily compared and verified. This parameter transformation simplifies the verification process while preserving the unique device characteristics.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a hardware-based, unique signature for user authentication, enhancing security by leveraging the inherent light interference patterns generated by under-display cameras, which are specific to each display and camera configuration.
Implementation Method 1
determine an interference pattern resulting from the at least one image being output
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3
AI summary
There is provided a method, computer program, and apparatus for causing an apparatus comprising a display layer and an under-display camera to perform: causing at least one image to be output by the display layer; using the under-display camera to determine an interference pattern resulting from the at least one image being output; converting the determined pattern into a first hash; and signalling the first hash to a requesting entity for verifying the apparatus.