Portable Terminal Hand Detection and Button Positioning
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Solution Overview
Problem
Existing methods for determining the hand with which a user holds a portable terminal are not accurate enough, leading to poor operability when the wrong hand is incorrectly determined, causing the operation button to be displayed at an inappropriate position.
Innovation Solution
A program and processing method that acquires a user image using the portable terminal's camera and adjusts the position of the operation button on the touch panel display based on whether the user's hand is a right or left hand, ensuring accurate determination and optimal operability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If hand detection is performed based on acceleration sensor data, then the system can determine holding hand, but the detection accuracy is insufficient
Solution Approach 1:
The patent replaces the mechanical/physical sensor-based detection system (acceleration sensor) with an image processing system. The camera captures images of the user's hand, and image processing algorithms analyze the hand shape and position to determine whether it is a left or right hand, thereby achieving higher detection accuracy and improving operability reliability.
2Ease of operation
If operation button position is fixed, then device complexity is reduced, but ease of operation deteriorates when hand detection is inaccurate
Solution Approach 1:
The patent implements dynamic adjustment of the operation button position based on real-time hand detection results. The screen generation unit dynamically repositions the operation button according to whether the detected hand is a left or right hand, ensuring optimal operability for each user while maintaining manageable system complexity through automated detection and adjustment.
Data Source
AI summary
The present invention provides a portable terminal (10) that includes an acquisition unit (11) that acquires a user image including a user, and a screen generation unit (12) that changes a position of an operation button on a screen to be displayed on a touch panel display (14), according to whether a hand of the user included in the user image is a right hand or a left hand.