Fingerprint Enrollment Method with Dynamic Stop Logic
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Solution Overview
Problem
Conventional fingerprint enrollment methods, such as pressing enrollment, are time-consuming and limited in flexibility, requiring users to repeatedly press the fingerprint sensor to acquire multiple images, which can be inconvenient.
Innovation Solution
A method that allows fingerprint enrollment through either spiral or press enrollment, where the fingerprint sensor stops sensing once a predetermined number (N) of touches or a specified number (M) of qualified images are acquired, enabling completion of the enrollment process regardless of the enrollment method used.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressing enrollment method is used to acquire multiple fingerprint images, then the fingerprint enrollment can be completed, but the enrollment process takes much time
Solution Approach 1:
The patent applies dynamics by making the enrollment process adaptable to different user behaviors. The system dynamically adjusts between two enrollment modes: spiral enrollment (continuous finger movement) and press enrollment (repeated pressing). This dynamic adaptation allows the system to complete enrollment faster by selecting the more efficient method based on real-time sensing data, thereby reducing enrollment time while ensuring reliable fingerprint capture.
Solution Approach 2:
The patent changes the parameter of enrollment method from a fixed pressing method to a flexible system that can switch between spiral and press enrollment. By introducing the parameter of enrollment mode selection and using the determination condition (M qualified images or N touches), the system optimizes the enrollment process efficiency, resolving the contradiction between ensuring complete enrollment and reducing time consumption.
2Reliability
If pressing enrollment method is used, then the fingerprint can be enrolled, but the method is limited and not flexible
Solution Approach 1:
The patent applies universality by designing an enrollment system that can perform multiple functions: it can conduct both spiral enrollment and press enrollment through the same fingerprint sensor and processing logic. The determination condition (M qualified images or N touches) serves as a universal criterion that works for both methods, making the system versatile and adaptable to different user preferences and scenarios while ensuring reliable enrollment completion.
3Quantity of substance
If multiple fingerprint images are acquired through repeated pressing, then the enrollment information is sufficient, but the operation becomes inconvenient
Solution Approach 1:
The system dynamically adapts to user convenience by offering two enrollment approaches. The spiral enrollment method allows users to simply move their finger in a spiral pattern without repeated pressing, greatly improving ease of operation. The system uses the same determination condition (M qualified images) to ensure sufficient enrollment information is captured regardless of the method chosen, thus maintaining both image quantity and user convenience.
Data Source
AI summary
The present invention relates to a fingerprint enrollment method and an electronic device for performing the fingerprint enrollment method. A fingerprint sensor of the electronic device senses the fingerprint to generate the fingerprint images. The processor of the electronic device determines if M qualified fingerprint images are acquired or the number of times the finger touches the fingerprint sensor reaches N. When any of the above conditions is satisfied, the operation of sensing fingerprint is stopped. After that, the processor uses the fingerprint images to generate fingerprint enrollment information to complete the fingerprint enrollment process. Based on the disclosure of the present invention, the user can complete the fingerprint enrollment process regardless of whether the user uses spiral enrollment or pressing enrollment.