Touchscreen Slide Unlocking via Distance Thresholds
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Solution Overview
Problem
Conventional touchscreen devices require precise positioning and path-following for unlocking, making it difficult to unlock the screen in special usage scenarios such as one-handed use or emergencies.
Innovation Solution
A slide unlocking method that samples finger movement on a touchscreen, calculating transverse and longitudinal sliding distances to determine if the touchscreen should be unlocked or remain locked, with prompts provided for incorrect operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional unlocking method with preset position and specific path is used, then security is improved, but ease of operation deteriorates
Solution Approach 1:
The patent changes the parameters of the unlocking operation from requiring precise position and path to accepting any sliding operation as long as it meets minimum distance thresholds. This transforms the unlocking criterion from a fixed geometric constraint to a flexible distance-based constraint, improving ease of operation while maintaining security through configurable distance parameters D1 and D2
Solution Approach 2:
The patent introduces dynamic evaluation of sliding operations by continuously tracking finger movement and evaluating whether the sliding distance meets the threshold criteria. The system dynamically adjusts between locked and unlocked states based on real-time movement analysis, allowing flexible unlocking in various usage scenarios while maintaining security through programmable distance requirements
2Reliability
If precise positioning and path-following is required for unlocking, then security is improved, but adaptability deteriorates
Solution Approach 1:
The patent transforms the unlocking system from requiring specific position and path parameters to accepting any sliding operation that meets minimum distance thresholds D1 and D2. This parameter change enables the system to adapt to different usage scenarios (one-handed use, emergencies, etc.) while maintaining security through configurable distance requirements
Solution Approach 2:
The patent creates a universal unlocking mechanism that can handle various usage scenarios through a single sliding-based interface. The system accepts different sliding patterns, directions, and starting positions as long as the distance thresholds are met, making it versatile for one-handed use, emergency situations, and normal operation while maintaining consistent security standards
Data Source
AI summary
A slide unlocking method for a touchscreen device under a screen locking state is provided. The method includes steps of: sampling a track generated by the sliding of a user's finger on a touchscreen, and sequentially acquiring a plurality of sampling points; acquiring a first sampling point and a last sampling point of the track, and calculating a transverse sliding distance and a longitudinal sliding distance of the finger on the touchscreen; and unlocking the touchscreen when the transverse sliding distance is greater than or equal to a first preset distance and the longitudinal sliding distance is less than or equal to a second preset distance; otherwise, keeping the screen in the lock state. In this way, the present invention increases the degrees of freedom of a user's operation, so that a user can conveniently perform unlocking in a special usage scenario.