Fingerprint Sensor Direction Alignment for Gesture Authentication
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Solution Overview
Problem
Current fingerprint identification methods in electronic devices face challenges in improving identification performance and intuitively recognizing gestures for authentication, often requiring precise alignment and direction consistency between input and stored fingerprints.
Innovation Solution
An electronic device with a fingerprint sensor and processor that senses input direction, aligns it with a reference direction if necessary, and compares it to a stored fingerprint, allowing for intuitive gesture-based authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fingerprint alignment is required to match reference direction, then identification accuracy is improved, but operation complexity increases
Solution Approach 1:
The system performs preliminary detection of the input fingerprint's axis direction and pre-rotates it to match the reference direction before comparison. This preliminary alignment action ensures that the fingerprint is properly oriented without requiring the user to manually adjust the gesture, thus maintaining high identification accuracy while keeping the operation simple.
Solution Approach 2:
The fingerprint recognition system automatically detects the input direction and performs self-alignment by rotating the fingerprint image to match the reference direction. This self-service mechanism eliminates the need for user intervention in the alignment process, resolving the contradiction between maintaining high precision and ensuring ease of operation.
2Reliability
If fingerprint direction consistency is enforced, then authentication reliability is improved, but user convenience deteriorates
Solution Approach 1:
The system dynamically adjusts the fingerprint image based on its detected axis direction, rotating it to match the reference direction before authentication. This dynamic adaptation allows the system to maintain reliable authentication by ensuring direction consistency while simultaneously accommodating various user input gestures, thus preserving user convenience.
Solution Approach 2:
The system changes the orientation parameter of the input fingerprint image by rotating it to match the reference direction. This parameter transformation enables the system to enforce direction consistency for reliable authentication while accepting flexible user gestures, as the rotation automatically adapts the fingerprint orientation without restricting user input choices.
3Measurement precision
If axis direction detection and adjustment is implemented, then identification performance is improved, but processing time increases
Solution Approach 1:
The system performs axis direction detection and rotation as preliminary actions before the actual fingerprint comparison. By completing these preparatory steps upfront, the system ensures that the fingerprint is properly aligned for accurate matching, while the automated nature of these operations minimizes the additional time required, thus improving identification performance without significant time penalty.
Solution Approach 2:
The system replaces manual alignment operations with automated digital image processing techniques for detecting and rotating the fingerprint based on its axis direction. This substitution of mechanical/manual processes with efficient computational methods improves identification accuracy while minimizing processing time, as the digital rotation and detection can be performed rapidly.
Data Source
AI summary
A method for operating of an electronic device is provided. The method includes: sensing an input on an input device, detecting one axis direction of a fingerprint input or to be input to a fingerprint sensor, based on the sensed input, determining whether the one axis direction of the fingerprint is consistent with a reference direction of a reference fingerprint, when the one axis direction is not consistent with the reference direction, making the one axis direction consistent with the reference direction, and determining whether the fingerprint is consistent with the reference fingerprint.