Touchless Gesture Recognition Using Peripheral Sensors
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Solution Overview
Problem
Conventional portable terminals face limitations in increasing display size due to the need for input interfaces like key buttons and keypads, and touch screens are prone to damage and sensitivity deterioration from fingerprints and scratches, necessitating an alternative input method.
Innovation Solution
A gesture recognition method using sensors disposed around the screen that store and analyze sensing information to recognize user gestures without physical contact, generating control signals corresponding to defined gestures for terminal and content control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a touch-type interface is used, then the display size can be increased without physical input interfaces, but the screen may be damaged due to fingerprints or scratches and sensitivity deteriorates
Solution Approach 1:
The patent introduces sensors as an intermediary component that detects user gestures in the air space above the screen without requiring direct contact. The sensors capture sensing information from objects (user's hand/finger) within a preset distance, allowing input control to be transmitted to the processor which then generates control signals. This mediator approach enables touchless interaction, preserving the screen from physical damage while maintaining input functionality.
2Ease of operation
If sensors are disposed out of the screen for gesture sensing, then touchless control is enabled, but the sensing region coverage and accuracy must be optimized
Solution Approach 1:
The patent divides the sensing function into multiple discrete sensors positioned at different locations around the screen (e.g., four corners). Each sensor independently detects objects within its specific sensing region, and the processor integrates information from multiple sensors to recognize complete gestures. This segmentation allows comprehensive coverage of the sensing space while maintaining precise localization through multi-sensor coordination.
Solution Approach 2:
The patent extends the sensing capability from a two-dimensional screen surface to a three-dimensional space above the screen by positioning sensors at multiple heights and angles. The sensing regions are configured to overlap in space, creating a volumetric detection zone that captures gestures at various distances from the screen, thereby enhancing both coverage and precision through spatial dimensionality.
Data Source
AI summary
Provided is a method of recognizing a gesture, which includes: storing sensing information of a sensor in a case where the sensing information is obtained by sensing an object within a preset distance from the sensor; and recognizing a gesture from the stored sensing information, wherein said storing of sensing information stores the sensing information obtained by the sensor during a preset time after the sensor senses an object within the preset distance. This method allows a terminal and contents to be controlled by recognizing a gesture of a user even though the user does not touch the terminal screen.