Gaze-Based Selection Control Using Distance-Adjusted Dwell Time
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Solution Overview
Problem
Conventional electronic devices that detect a user's line of sight for controlling functions like automatic focusing and exposure face issues with unintended selection changes due to involuntary eye movements, leading to poor operational feedback.
Innovation Solution
An electronic device with a receiving unit for line of sight input and a control unit that adjusts the selection based on gazing conditions, where the selection is updated if the user gazes at a position for a specific duration at varying distances and periods, balancing responsiveness and user intent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the selected position is changed based on line of sight detection, then the responsiveness of selection change is improved, but unintended selection changes occur due to involuntary eye movements
Solution Approach 1:
The system performs preliminary action by setting a predetermined threshold period before actually changing the selection. When the line of sight is detected at a different position, the system waits for the threshold period to elapse before executing the selection change. This preliminary waiting period filters out involuntary eye movements while still maintaining responsiveness to intentional gaze changes.
2Reliability
If the responsiveness of selection change is lowered to prevent unintended changes, then user intent accuracy is improved, but the operational feeling deteriorates
Solution Approach 1:
The system applies parameter changes by dynamically adjusting the selection change threshold based on the distance from the current selection. When the line of sight moves farther from the currently selected position, the threshold period is reduced, allowing faster selection changes. This parameter adjustment maintains accurate user intent recognition while preserving responsive operational feeling.
Data Source
AI summary
An electronic device comprising: a control unit performs control such that a selected position in a display is changed, wherein the control unit performs control such that the selected position is changed based on gazing at a first position in response to satisfaction of a viewed point condition corresponding to a fact that gazing at the first position at a first distance from the selected position has been performed for a first period, and the selected position is changed based on gazing at a second position in response to satisfaction of a viewed point condition corresponding to a fact that gazing at the second position at a second distance which is farther from the selected position than the first distance, has been performed for a second period shorter than the first period.