Compressive Imaging Security Device for Fingerprint Recognition
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Solution Overview
Problem
Current fingerprint recognition security devices are vulnerable to hacking and data leaks, rendering their security function ineffective if stored fingerprint images are compromised.
Innovation Solution
The implementation of a security device utilizing compressive imaging technology with a supporter, light source, active mask plate, and light receiver and processor to encode and compress fingerprint images, making it impossible to trace back the original image from the stored compressed data without the mask's pattern information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fingerprint image storage is used, then the system is simple and easy to implement, but the security reliability deteriorates because the stored fingerprint images can be hacked or leaked
Solution Approach 1:
The patent segments the fingerprint image into multiple compressed representations by projecting it through different mask patterns. Each mask creates a unique compressed image that cannot be reversed to the original fingerprint, thereby enhancing security while maintaining system functionality
Solution Approach 2:
The patent introduces masks as an intermediary component between the light source and the fingerprint sensor. These masks transform the optical path and encode the fingerprint image in a secure compressed format, adding security without requiring direct access to the original image
2Reliability
If compressive imaging technology with masks is used, then the security reliability improves, but the device complexity increases due to additional components
Solution Approach 1:
The patent employs masks that can be implemented as simple, inexpensive optical elements. These masks can be easily manufactured and replaced if needed, reducing the overall manufacturing complexity despite the enhanced security functionality
Solution Approach 2:
The patent replaces complex mechanical fingerprint capture systems with an optical compressive imaging system using masks and light sources. This substitution simplifies the mechanical structure while achieving superior security through optical encoding
3Reliability
If multiple masks with different optical patterns are used, then the security function is enhanced through multiple compressed images, but the manufacturing cost and device complexity increase
Solution Approach 1:
The patent designs the mask system to be multi-functional, where the same mask structure can generate multiple different optical patterns. This allows a single physical component to perform multiple security functions, reducing the need for multiple separate masks and lowering overall device complexity
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
Enhances security reliability by ensuring that even if the stored compressed image is leaked, it cannot be used to recreate the original fingerprint, thereby maintaining security and reducing manufacturing costs compared to traditional CCD array-based systems.
Implementation Method 1
a light source configured to irradiate light towards the recognition object... light that is reflected from the recognition object
Implementation Method 2
a mask configured to code light that is reflected from the recognition object, the coded light corresponding to an image of the recognition object
Implementation Method 3
a light receiver and processor configured to compress the coded light into a compressed image... a light detector configured to detect the coded light
Data Source
AI summary
A security device using compressive imaging technology is provided. The security device includes a supporter configured to support a recognition object, a light source configured to irradiate light towards the recognition object, a mask configured to code light that is reflected from the recognition object, the coded light corresponding to an image of the recognition object, and a light receiver and processor configured to compress the coded light into a compressed image, and store the compressed image.