Fingerprint Authentication Power-On Integration
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Solution Overview
Problem
Fingerprint login methods in existing systems require continuous power supply to the fingerprint sensor during shutdown, leading to reduced battery life and inefficient login processes.
Innovation Solution
A method and device where fingerprint data is collected upon detecting a power-on signal, allowing for single-step power-on and fingerprint authentication, eliminating the need for continuous power supply to the fingerprint sensor in a shutdown state, thereby improving login efficiency and extending battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous power is supplied to the fingerprint sensor during shutdown state, then fingerprint authentication can be performed, but battery life is reduced
Solution Approach 1:
The system transitions from continuous power supply to periodic power supply. The fingerprint sensor is powered only during specific periods when authentication is needed (upon power button press), rather than continuously during shutdown state. This periodic activation maintains authentication capability while dramatically reducing power consumption and extending battery life.
Solution Approach 2:
The fingerprint collection module is activated preliminarily when the power button is pressed, before the main system fully powers on. This allows fingerprint data to be collected during the power-on transition period, ensuring authentication is ready before the device becomes fully operational, thus maintaining reliability without requiring continuous prior power supply.
2Reliability
If fingerprint sensor is powered continuously in shutdown state, then authentication is available, but power consumption increases
Solution Approach 1:
The fingerprint sensor operates periodically only when needed - specifically when the power button is pressed - rather than continuously. The power control module manages power supply to activate the fingerprint collection module only during these periodic authentication events, reducing overall power consumption while maintaining authentication availability.
Solution Approach 2:
The power button serves dual functions: it acts as both the power activation mechanism and the fingerprint collection trigger. When pressed, it automatically initiates both system power-on and fingerprint data collection, eliminating the need for separate authentication actions and reducing unnecessary power consumption from redundant operations.
3Productivity
If fingerprint data is collected during power-on process, then login efficiency is improved, but authentication operations are reduced
Solution Approach 1:
The patent merges the power-on process with the fingerprint authentication process into a single integrated operation. When the power button is pressed, both the system power-on and fingerprint data collection occur simultaneously during the same time period. This consolidation eliminates the need for separate authentication operations after power-on, thereby improving login efficiency and reducing the total time required for authentication.
Data Source
AI summary
A fingerprint recognition method and terminal device provide authentication by simultaneously collecting fingerprint data when a power-on signal is detected, attempting to match the fingerprint data with preset fingerprint data, and logging in to the terminal device proceeds when the matching succeeds.