Method and apparatus for recognizing fingerprint, and electronic device
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Ultrasonic fingerprint recognition modules face poor quality of collected fingerprint images and low success rate due to fixed parameters, which are inadequate for varying environmental conditions and screen configurations.
Innovation Solution
The method involves acquiring ambient temperature and searching for corresponding fingerprint acquisition parameters from multiple configuration tables to control the ultrasonic fingerprint module for optimal image collection and recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed fingerprint acquisition parameters are used, then the device complexity is reduced, but the measurement precision of fingerprint images deteriorates
Solution Approach 1:
The patent implements dynamic parameter adjustment by selecting different fingerprint acquisition parameters based on ambient temperature conditions. The system transitions from fixed parameters to temperature-adaptive parameters, where the ultrasonic fingerprint module automatically adjusts its operating parameters according to the detected temperature, thereby maintaining high image quality across varying environmental conditions without requiring complex manual configuration.
2Adaptability or versatility
If multiple parameter configuration tables are implemented, then the adaptability to environmental conditions is improved, but the device complexity increases
Solution Approach 1:
The patent employs parameter changes by storing multiple sets of fingerprint acquisition parameters in configuration tables corresponding to different temperature ranges. The system automatically selects the appropriate parameter set based on the ambient temperature measurement, enabling adaptive optimization of fingerprint acquisition without requiring complex real-time calculations or multiple physical components.
3Ease of operation
If fixed parameters are used for fingerprint acquisition, then the ease of operation is maintained, but the reliability of fingerprint recognition deteriorates
Solution Approach 1:
The patent implements self-service by enabling the fingerprint acquisition system to automatically adjust its own parameters based on ambient temperature detection. The system performs self-optimization without requiring user intervention, maintaining ease of operation while significantly improving recognition reliability through automatic adaptation to environmental conditions.
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
This approach improves the success rate of fingerprint recognition by offering adaptable parameters based on ambient temperature and device usage states, enhancing image quality and recognition efficiency.
Implementation Method 1
Due to differences in acoustic impedance between the screen, finger and air, the ultrasonic fingerprint module may distinguish between valleys and ridges on the fingerprint based on the reflected ultrasonic signal
Implementation Method 2
acquiring an ambient temperature of an ultrasonic fingerprint module
Data Source
AI summary
A method and apparatus for recognizing a fingerprint, and an electronic device are provided. The method includes: acquiring an ambient temperature of an ultrasonic fingerprint module; searching for fingerprint acquisition parameters corresponding to the ambient temperature from multiple parameter configuration tables, wherein the fingerprint acquisition parameters corresponding to the ambient temperature differ in the multiple parameter configuration tables, and the fingerprint acquisition parameters constitute at least part of parameters required to perform fingerprint acquisition by the ultrasonic fingerprint module; and controlling the ultrasonic fingerprint module to perform fingerprint acquisition based on the fingerprint acquisition parameters, so as to perform fingerprint recognition using collected fingerprint images. The method for recognizing a fingerprint provided by embodiments of the present disclosure may be applied to fingerprint recognition in a variety of application scenarios, thereby improving a success rate of fingerprint recognition.