Fingerprint Sensor Sensitivity Control for Unintended Touch Reduction
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Solution Overview
Problem
Fingerprint sensors in terminals have fixed sensitivity after manufacturing, leading to poor flexibility in recognizing fingerprints and a high likelihood of unintended touches, which affects their performance in real-world usage.
Innovation Solution
A method and device that allow users to adjust the sensitivity of the fingerprint sensor by displaying multiple sensitivity options and setting a target sensitivity value, enabling users to customize the sensor's response based on their needs and environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensitivity of the fingerprint sensor is increased, then the ability to detect unintended touches is improved, but the likelihood of false positives increases and fingerprint recognition accuracy deteriorates
Solution Approach 1:
The patent implements dynamic sensitivity adjustment by providing multiple sensitivity levels (first, second, and third levels) that can be switched based on usage scenarios. The system transitions from a fixed sensitivity setting to a dynamic one where sensitivity can be changed according to whether fingerprint recognition or unintended touch detection is the priority, thus resolving the contradiction between these two functions.
Solution Approach 2:
The patent changes the sensitivity parameter of the fingerprint sensor to different levels (first level for high sensitivity to unintended touches, second level for balanced performance, third level for high fingerprint recognition accuracy). By adjusting this key parameter, the system can optimize performance for different functions, resolving the contradiction between unintended touch detection and fingerprint recognition accuracy.
2Object-generated harmful factors
If the sensitivity of the fingerprint sensor is decreased, then the occurrence of unintended touches is reduced, but the ability to recognize fingerprints deteriorates
Solution Approach 1:
The system dynamically adjusts sensitivity between different levels. When unintended touch reduction is prioritized, the system switches to lower sensitivity levels (second or third level). When fingerprint recognition accuracy is prioritized, it switches to higher sensitivity levels, thus dynamically resolving the contradiction between these conflicting requirements.
Solution Approach 2:
The patent adjusts the sensitivity parameter to different levels (first, second, third levels) to control the trade-off between unintended touch occurrence and fingerprint recognition ability. By changing this parameter, the system can minimize harmful unintended touches while maintaining adequate fingerprint recognition capability when needed.
3Device complexity
If the sensitivity of the fingerprint sensor is fixed during manufacturing, then the device complexity is reduced, but the adaptability to different usage scenarios deteriorates
Solution Approach 1:
The system provides self-service adaptability by allowing users to automatically or manually select appropriate sensitivity levels based on their own usage needs. The system serves itself by adapting to different scenarios without requiring complex external configuration, thus maintaining simplicity while improving adaptability.
Solution Approach 2:
The fingerprint sensor is designed with multi-functionality by supporting multiple sensitivity levels (first, second, and third levels) that can serve different usage scenarios. This universal design allows the same hardware to adapt to various needs, from prioritizing unintended touch detection to prioritizing fingerprint recognition accuracy, without requiring different hardware configurations.
Data Source
AI summary
A method and an apparatus, and a storage medium are provided for controlling a fingerprint sensor in the field of fingerprint identification. The method may include: after an instruction for adjusting a sensitivity of the fingerprint sensor is received, displaying a page for adjusting the sensitivity, in which, at least two different optional sensitivities of a target fingerprint detection module in the fingerprint sensor are displayed on the page; receiving an instruction for selecting the sensitivity, in which, the instruction for selecting the sensitivity includes a target value selected by a user from the at least two different optional sensitivities; and setting a sensitivity of the target fingerprint detection module as the target value.