Dynamic Fingerprint Module State Control for Power Optimization
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Solution Overview
Problem
Touchscreen terminals with full-screen fingerprint recognition experience high power consumption and short standby times due to the constant enabled state of the fingerprint recognition module, which is required for every touch operation.
Innovation Solution
Implement a method where the terminal determines if fingerprint authentication is needed for an application program, keeping the fingerprint recognition module disabled until authentication is required, and enabling it only when necessary, such as after a specified duration or upon successful authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fingerprint recognition module is always in an enabled state to perform touch operations, then the security and convenience of using the touchscreen terminal are improved, but the power consumption increases and the standby time is reduced
Solution Approach 1:
The patent applies dynamics by making the fingerprint recognition module's operational state changeable rather than fixed. The module dynamically switches between enabled and disabled states based on whether fingerprint authentication is required for the current application, optimizing power consumption while maintaining security when needed
Solution Approach 2:
The patent implements periodic action by enabling the fingerprint recognition module only at specific intervals or conditions rather than continuously. The system periodically checks whether fingerprint authentication is required and activates the module only during those necessary periods, reducing overall power consumption
2Ease of operation
If the fingerprint recognition module is always in an enabled state to perform touch operations, then the convenience of using the touchscreen terminal is improved, but the standby time is reduced
Solution Approach 1:
The system dynamically adjusts the operational state of the fingerprint recognition module based on real-time requirements. When fingerprint authentication is not needed, the module remains disabled to extend standby time; when authentication is required, it enables conveniently for the user
3Use of energy by moving object
If the fingerprint recognition module is enabled only when necessary, then the power consumption is reduced and standby time is prolonged, but the system processing volume increases due to determining authentication requirements
Solution Approach 1:
The system performs preliminary action by pre-determining whether fingerprint authentication is required for each application program before executing it. This advance determination prevents unnecessary processing and enables the system to keep the fingerprint recognition module disabled when not needed, reducing power consumption without adding complex runtime processing
Data Source
AI summary
A fingerprint recognition method includes, when a fingerprint authentication module is in a disabled state, receiving a touch operation used to trigger an application program. If fingerprint authentication is not required for execution of the application program, the fingerprint recognition module is kept in a disabled state, and after the application program has been executed for specific duration, the fingerprint authentication module is enabled again, to perform the fingerprint authentication.