Virtual Keyboard Activation via Dual-Hand Finger Arrangement
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Solution Overview
Problem
Current display devices lack an efficient method to automatically and securely display a virtual keyboard based on user input, particularly when multiple fingers from both hands are used in a specific arrangement, which is not effectively addressed by existing technologies.
Innovation Solution
A display device equipped with a touch sensor and a controller that detects the arrangement and number of fingers from both hands, displaying a virtual keyboard when the fingers form a predetermined pattern, such as a horizontal line, and matches pre-registered fingerprints to ensure secure activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the virtual keyboard is always displayed, then user input capability is improved, but screen space occupation and potential unintentional activation increase
Solution Approach 1:
The system performs preliminary detection of finger arrangement patterns and fingerprint authentication before displaying the virtual keyboard. This ensures the keyboard is only activated when intentional input is detected, preventing unintentional activation while maintaining screen space efficiency
Solution Approach 2:
The touch sensor and fingerprint sensor automatically detect finger patterns and authenticate users without requiring manual keyboard activation. The system serves itself by intelligently determining when the virtual keyboard should be displayed based on detected input patterns
2Reliability
If fingerprint authentication is added, then security is improved, but device complexity increases
Solution Approach 1:
The fingerprint sensor serves multiple functions: it authenticates user identity and simultaneously verifies that the detected finger pattern matches the registered user's fingers. This multi-functionality adds security without proportionally increasing complexity
Solution Approach 2:
The controller acts as an intermediary that integrates touch sensor data with fingerprint sensor data. It compares the arrangement of detected fingers with the fingerprint information to verify authentication, managing the complexity through centralized coordination
3Measurement precision
If multiple detection conditions are required, then accuracy of keyboard activation is improved, but response time increases
Solution Approach 1:
Fingerprint information is pre-registered and stored in the controller. When fingers are detected, the system quickly compares the current finger arrangement against pre-stored fingerprint data, enabling fast authentication without time-consuming processing
Solution Approach 2:
The system replaces complex multi-step verification processes with direct pattern matching algorithms. The controller uses efficient computational methods to compare detected finger arrangements with stored fingerprint patterns, achieving high accuracy with minimal processing time
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
Enables secure and efficient display of virtual keyboards based on user input patterns, preventing unintentional keyboard activation and enhancing user interaction by ensuring accurate detection of finger arrangements and authentication.
Implementation Method 1
a touch sensor configured to detect first fingers and second fingers input to a touch sensing area overlapping the display area
Implementation Method 2
a fingerprint sensor configured to detect fingerprints of the first fingers and fingerprints of the second fingers input to a fingerprint sensing area overlapping the touch sensing area
Data Source
AI summary
A display device includes a display, a touch sensor, and a controller. The touch sensor detects first fingers and second fingers input to a touch sensing area overlapping a display area. The first fingers are located on a user's left hand, and the second fingers are located on a user's right hand. The controller displays a virtual keyboard on the display area when an arrangement of the first fingers and the second fingers corresponds to a predetermined arrangement, and when a sum of the number of the first fingers and the number of the second fingers detected by the touch sensor is greater than or equal to a predetermined reference value.