Virtual Home Button Fingerprint Authentication Mobile Terminal
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Solution Overview
Problem
Mobile terminals lack an efficient method for integrating fingerprint recognition and virtual home button functionality, limiting user interface optimization and payment security.
Innovation Solution
A mobile terminal with a touch screen incorporating a fingerprint recognition sensor and a control unit that outputs a virtual home button for fingerprint authentication, allowing payment processing based on signal reception from a POS terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a physical home button is implemented, then user interface functionality is provided, but display area is reduced and device structure becomes more complex
Solution Approach 1:
The patent uses a virtual home button displayed on the touchscreen that replicates the functionality of a physical home button. The virtual button is rendered as a graphical element on the display, allowing users to interact with it through touch gestures without requiring any physical hardware component, thus preserving the full display area while maintaining the essential navigation function.
Solution Approach 2:
The patent replaces the mechanical physical home button with a software-based virtual home button implemented through touchscreen technology. This substitution eliminates the need for mechanical components, allowing the display area to be fully utilized while providing the same user interface functionality through digital interaction rather than physical pressing.
2Reliability
If fingerprint recognition is integrated into the virtual home button, then security and payment functionality are enhanced, but device complexity increases
Solution Approach 1:
The patent combines the fingerprint recognition sensor with the virtual home button functionality by placing the sensor at the location where the virtual button is displayed on the touchscreen. This merging allows the same touch interaction area to simultaneously provide navigation control and biometric authentication, enhancing security and payment capabilities without adding separate physical components or increasing device structural complexity.
Solution Approach 2:
The virtual home button area serves multiple functions: it acts as a navigation control when touched normally, and triggers fingerprint recognition when a finger is placed on it for authentication purposes. This multi-functionality allows a single interface element to provide both user interface control and security verification, reducing the need for additional dedicated components while enhancing overall device functionality.
3Reliability
If fingerprint authentication is performed continuously, then security is maintained, but processing time increases
Solution Approach 1:
The patent implements fingerprint authentication on demand rather than continuously. The fingerprint recognition function is activated periodically only when the user interacts with the virtual home button in a specific manner (such as holding the touch or using a gesture pattern), rather than requiring continuous authentication. This periodic activation maintains security when needed while avoiding unnecessary processing time during normal operations.
Solution Approach 2:
The system prepares for potential authentication by having the fingerprint sensor ready and configured in advance, but only executes the authentication process when triggered by specific user actions. This preliminary preparation allows the system to quickly perform authentication when needed without the overhead of continuous verification, reducing perceived processing time while maintaining security readiness.
Data Source
AI summary
The present invention relates to a mobile terminal having a touch screen configured to perform fingerprint recognition and a control method therefor. A mobile terminal according to an embodiment of the present invention comprises: a wireless communication unit; a touch screen including a fingerprint recognition sensor; and a controller configured to cause the touch screen to display a virtual home button at one area of the touch screen based on a touch received at the one area; perform fingerprint authentication on a fingerprint of a finger used to apply the touch to the virtual home button via the fingerprint recognition sensor when the touch is maintained at the one area after the virtual home button is displayed.