Face Direction Indicator Movement Suppression
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Solution Overview
Problem
Conventional techniques for moving an indicator on a display using face direction detection often result in unintended movement when the user's face is unintentionally directed slightly off the desired path, leading to poor usability.
Innovation Solution
An information processing device equipped with a display unit, a face direction detector, and a movement controller that suppresses indicator movement when the detected face direction is within a predetermined angle range from the forward direction, thereby preventing unintended movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the indicator is moved according to the direction of the user's face, then the ease of operation is improved, but the reliability deteriorates due to unintended movement when the user's face is unintentionally directed slightly off the desired path
Solution Approach 1:
The patent applies parameter changes by introducing an angle threshold parameter to control indicator movement. When the detected face direction deviates from the reference direction by more than the predetermined angle, the indicator moves; when the deviation is within the angle, the indicator remains stationary. This parameter-based control resolves the contradiction by filtering out unintentional movements (improving reliability) while preserving intentional movements (maintaining ease of operation).
Solution Approach 2:
The patent implements feedback by continuously monitoring the angle between the detected face direction and the reference direction, and adjusting the indicator movement state based on this feedback. The system provides visual feedback through angle display and movement suppression indicators to help users understand when their face direction will trigger movement, thereby improving both reliability and ease of operation.
2Reliability
If the indicator movement is suppressed when face direction is within a predetermined angle range, then the reliability is improved, but the ease of operation deteriorates due to reduced sensitivity
Solution Approach 1:
The patent applies dynamics by making the angle threshold adjustable rather than fixed. The system can dynamically change the predetermined angle based on user preferences or usage scenarios, allowing the suppression sensitivity to adapt to different operational contexts. This resolves the contradiction by enabling reliable suppression of unintentional movements while maintaining ease of operation through appropriate angle calibration.
Solution Approach 2:
The patent uses parameter changes by allowing the predetermined angle to be modified according to distance between the detector and user. When the user is farther from the detector, a larger angle is used to maintain sensitivity; when closer, a smaller angle provides more precise control. This dynamic parameter adjustment balances reliability and ease of operation across different usage scenarios.
3Adaptability or versatility
If the predetermined angle range is adjusted according to distance between the detector and user, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The patent applies self-service by implementing automatic distance-based angle adjustment without requiring manual user configuration. The system automatically detects the distance between the detector and user, and dynamically adjusts the predetermined angle accordingly. This resolves the contradiction by providing adaptability across different distances while avoiding the complexity of manual setup procedures.
Data Source
AI summary
An information processing device includes a display unit for displaying a movable indicator, a detector for detecting the direction of the face of a user, and a movement controller for suppressing the indicator from moving on the display unit, when the direction of the face of the user detected by the detector is a direction within a predetermined angle range with respect to the forward direction.