Fingerprint Sensor Feedback for Enrollment Efficiency
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Solution Overview
Problem
Fingerprint sensor apparatuses lack clear feedback on captured and uncaptured fingerprint images during enrolment, leading to inefficient user interaction and increased touch operations.
Innovation Solution
A fingerprint sensor apparatus with a processor circuit and notification device that captures local fingerprint images, provides notification signals to guide the user on capturing clear images, and computes clarity levels to determine when to store or re-capture images, reducing the number of touch operations required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fingerprint sensor apparatus does not provide clear feedback on captured and uncaptured fingerprint images, then the device complexity is reduced, but the ease of operation deteriorates as users perform excessive touch operations
Solution Approach 1:
The patent implements a notification device that provides real-time feedback to users during fingerprint enrollment. The processor circuit generates notification signals indicating whether fingerprint images are clearly captured or not clearly captured, guiding users to adjust their finger placement. This feedback mechanism reduces unnecessary touch operations while maintaining simple device architecture.
2Ease of operation
If the fingerprint sensor apparatus provides detailed notification signals to guide users, then the ease of operation is improved, but the device complexity increases due to additional notification components
Solution Approach 1:
The notification device serves multiple functions: it displays captured image quality status, provides guidance directions for uncaptured regions, and confirms successful enrollment. By consolidating these functions into a single device, the patent improves ease of operation without proportionally increasing device complexity.
Solution Approach 2:
The system automatically analyzes captured fingerprint images and generates appropriate notification signals without requiring user interpretation or additional input. The processor circuit autonomously determines image quality and provides targeted guidance, reducing the operational burden on users.
3Measurement precision
If users perform multiple touch operations to capture complete fingerprint images, then the measurement precision is improved, but the loss of time increases due to repeated operations
Solution Approach 1:
The notification device provides immediate feedback after each touch operation, indicating which regions are clearly captured and which require additional touches. This guidance prevents redundant operations and directs users efficiently to capture only the necessary uncaptured regions, reducing time loss while maintaining complete fingerprint data acquisition.
Solution Approach 2:
The system performs preliminary analysis of each captured fingerprint image to determine clarity and completeness before requesting additional touches. By pre-assessing image quality and providing targeted feedback, the system minimizes unnecessary repeat operations and accelerates the enrollment process.
Data Source
AI summary
A fingerprint sensor apparatus including a fingerprint sensor and a processor circuit is provided. The fingerprint sensor is configured to capture a plurality of local fingerprint images of a fingerprint. The plurality of local fingerprint images include at least one first local fingerprint image and at least one second local fingerprint image. The processor circuit is electrically connected to the fingerprint sensor. The processor circuit is configured to identify the fingerprint according to the at least one first local fingerprint image of the local fingerprint images. The local fingerprint images form a global fingerprint image of the fingerprint. In addition, a method for sensing a fingerprint is also provided.