HMD Finger Detection Readiness Feedback
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Solution Overview
Problem
Head-mounted display devices often fail to recognize and respond to user inputs accurately due to detection unit failures, busy states, or operations performed outside detectable ranges, leading to usability issues.
Innovation Solution
A head-mounted display device with a display unit, imaging unit, and detecting unit that displays a determination result indicating whether the detecting unit is ready to receive operations, using images, texts, or icons to notify the user of detection readiness and range, and adjusts display modes based on operation states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the detecting unit continuously monitors operations, then the reliability of operation detection is improved, but the device complexity increases
Solution Approach 1:
The display control unit performs preliminary determination of whether the detecting unit is ready to detect operations before actually receiving operations. This preliminary action includes checking detection unit status and displaying determination results to users, preventing failed operations without requiring continuous complex monitoring during operation reception.
2Ease of operation
If the display device provides detailed status information about detection readiness, then the ease of operation is improved, but the loss of information increases
Solution Approach 1:
The display region is segmented into multiple areas: a first display region for showing determination results (readiness status) and a second display region for showing operation guides. This segmentation allows simultaneous display of status information and operational guidance without completely obscuring the outside scene, as the display regions are positioned within the user's field of view rather than blocking the entire view.
Solution Approach 2:
The display control unit acts as an intermediary between the detecting unit and the user. It determines readiness status, generates appropriate display content (figures, text, icons), and presents this information through the display region. This intermediary function translates complex detection unit status into user-friendly visual information without requiring direct complex interactions.
3Device complexity
If the detecting unit has a limited detection range, then the device complexity is reduced, but the reliability of operation detection decreases
Solution Approach 1:
The display control unit provides feedback to the user by displaying determination results in the display region when the detecting unit is not ready to detect operations. This feedback mechanism informs users of the detection unit's readiness status, allowing them to adjust their positioning or timing to ensure operations are performed within the detection range, thereby compensating for the limited detection range without increasing device complexity.
Data Source
AI summary
An HMD includes an image display unit that is mounted on a head of a user and includes a display region configured to display an image while an outside scene is visible, a first camera, a detecting unit configured to detect a movement of the user's fingers based on a captured image captured by the first camera and to receive an operation based on the detected movement of the fingers, and a display control unit configured to determine whether the detecting unit is ready to detect the operation based on the movement of the fingers, and to display a determination result in the display region.