Fingerprint Control Button Switching to Prevent Input Errors
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Solution Overview
Problem
In portable devices with a multi-function control button incorporating fingerprint recognition and control input detection functions, there is a risk of unintended errors occurring when the device fails to distinguish between the two functions, leading to incorrect execution of commands.
Innovation Solution
A method and apparatus that allow for the selective activation of the fingerprint recognition function and control input detection function of a control button, where the control input detection function is temporarily deactivated during fingerprint recognition, preventing errors and enabling seamless execution of commands post-recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a control button incorporates both fingerprint recognition function and control input detection function, then the device achieves multi-functionality and portability, but the device may incorrectly execute commands when it fails to distinguish between the two functions
Solution Approach 1:
The patent applies dynamics by making the control button's function state changeable. The button can dynamically switch between fingerprint recognition mode and control input detection mode based on operational context. The controller activates or deactivates the control input detection function according to whether fingerprint recognition is being performed, allowing the same hardware to adapt its behavior to different functional requirements without physical reconfiguration
Solution Approach 2:
The patent implements feedback through the controller that monitors the operational state of the control button and adjusts the detection function accordingly. When fingerprint recognition is detected as the active function, the controller provides feedback by deactivating the control input detection function to prevent incorrect command execution. This closed-loop control ensures the button performs only the intended function at any given time, resolving the ambiguity between multiple functions
2Ease of operation
If the control input detection function remains active during fingerprint recognition, then the device can respond to all user inputs, but unintended errors occur when control button execution is triggered during fingerprint scanning
Solution Approach 1:
The control input detection function is made dynamic rather than continuously active. The system adjusts the detection function's activation state based on the current operational context - active when control input is needed, deactivated when fingerprint recognition is in progress. This dynamic control prevents the system from misinterpreting fingerprint scanning touches as control button presses, eliminating unintended error execution while maintaining responsiveness during appropriate operations
Solution Approach 2:
The patent applies preliminary anti-action by deactivating the control input detection function in advance before fingerprint recognition errors can occur. When the system detects that fingerprint recognition is the intended function, it proactively disables the control input detection capability, preventing potential misinterpretation of user input before it can lead to incorrect command execution. This preemptive measure ensures input accuracy is maintained throughout the fingerprint recognition process
Data Source
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AI summary
A method of controlling a portable device according to one embodiment of the present specification may be able to selectively activate the functions of a multifunctional control button. The method of controlling the portable device may include the steps of sensing a first control input for a control button configured to perform a fingerprint recognition function and a control input detection function, recognizing a fingerprint of the first control input by activating the fingerprint recognition function, if the fingerprint recognition function is activated, deactivating the control input detection function, and if the activated fingerprint recognition function is terminated, activating the control input detection function.