Touch Panel Security Pattern Input with Hover Detection
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Solution Overview
Problem
Existing touch panel security systems in information terminals are prone to erroneous entries when releasing a security lock, as users can inadvertently select unintended touch points, leading to inconvenient re-entry processes and potential unauthorized access.
Innovation Solution
The implementation of a touch panel system that includes a hover detecting unit, a hover coordinate determining unit, and a touch confirming unit to differentiate between intentional and unintentional touch point selections, with stricter confirmation criteria for the first touch point to prevent erroneous entries, and additional conditions for subsequent points to ensure accurate pattern recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If contactless hover operation is used to select touch points, then user convenience is improved, but erroneous selection of unintended touch points increases
Solution Approach 1:
The patent applies different confirmation criteria to different touch points based on their position in the sequence. The first touch point requires a longer hover time (first prescribed time period) to confirm, while subsequent touch points require shorter hover times. This local differentiation of confirmation standards prevents erroneous selections at the critical first position while maintaining ease of operation for subsequent points.
Solution Approach 2:
The system performs preliminary hover time measurement before confirming a touch point selection. By measuring whether the hover duration exceeds the prescribed time threshold before finalizing the selection, the system prevents inadvertent selections while maintaining the contactless convenience. This preliminary verification action is applied selectively based on the touch point position.
2Reliability
If stricter confirmation criteria are applied to prevent erroneous entries, then security is improved, but user convenience deteriorates
Solution Approach 1:
The patent implements differentiated confirmation requirements based on the sequence position of touch points. Only the first touch point requires the extended hover time verification, while subsequent touch points use standard confirmation. This localized approach ensures security at the most vulnerable entry point without unnecessarily slowing down the entire pattern entry process.
Solution Approach 2:
The confirmation process is segmented into different phases: a preliminary hover detection phase for all touch points, and an extended verification phase only for the first touch point. This segmentation allows the system to apply strict security measures only where most needed while maintaining efficient operation for the remaining steps.
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
This solution minimizes erroneous entries during security code input, enhances user convenience by allowing contactless data entry, and improves security by ensuring accurate pattern recognition and preventing unauthorized access.
Implementation Method 1
providing a plurality of X direction electrodes extending in parallel to one another in the X direction and a plurality of Y direction electrodes extending in parallel to one another in the Y direction on the display panel so as to form an electrostatic capacitor at each intersection. By detecting the changes in the capacitances of these capacitors, the point on the display panel to which a user's finger is brought close can be detected.
Data Source
AI summary
In an information terminal including a touch panel defining a plurality of touch points for security data entry by selecting and designating the touch points forming a prescribed graphic security pattern, the first touch point is confirmed only when a pointing member has continued to remain within a prescribed region surrounding the touch point for more than a first prescribed time period while the remaining touch points can be confirmed on a less rigorous condition so that the first touch point can be confirmed only when the user intentionally designates the first touch point, and an inadvertent confirmation of an unintended touch point as the first touch point can be effectively avoided.