Stare Duration Eye Tracking for Progressive HMD Information Display
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Solution Overview
Problem
Current head-mounted display (HMD) systems lack the ability to dynamically adjust and enhance information display based on user gaze duration, failing to provide a progressive and relevant information presentation that aligns with user interest.
Innovation Solution
Incorporating an eye-tracking system into HMDs to detect stare direction and duration, allowing for the progressive display of information relevant to the target, with additional details revealed as the user continues to stare, using a combination of hardware components like infrared cameras, processors, and memory units to manage and adjust the display content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If information is continuously displayed on HMD, then information availability is improved, but user cognitive load and distraction increase
Solution Approach 1:
The system pre-loads and prepares information for display based on predicted user interest, but only activates display when stare duration confirms actual interest. This allows information to be ready in advance without forcing it on the user, reducing distraction while maintaining availability.
Solution Approach 2:
The display system dynamically adjusts information presentation based on real-time stare duration detection. Information transitions from hidden to visible state based on user engagement, creating a dynamic interface that adapts to user needs rather than forcing static information display.
2Loss of information
If HMD displays detailed information, then information density is improved, but field of view obstruction increases
Solution Approach 1:
The system displays information locally at the user's foveal fixation point rather than across the entire field of view. By detecting stare direction and duration, the system renders high-density information only in the small region where the user is actually looking, leaving the rest of the field of view clear for environmental awareness.
Solution Approach 2:
The patent utilizes the temporal dimension by detecting stare duration to trigger information display. Instead of filling spatial space with information, the system uses time-based triggering to reveal information on-demand, effectively adding a temporal layer to the display strategy that reduces spatial obstruction.
3Loss of information
If HMD provides comprehensive information, then user knowledge is improved, but processing time increases
Solution Approach 1:
The system initially displays only essential information when stare duration first exceeds the threshold, then progressively reveals additional information layers as stare continues. This partial action approach provides immediate value while allowing users to request more comprehensive information only if they maintain their stare, reducing initial processing time.
Solution Approach 2:
The system uses stare duration as continuous feedback to determine what level of information detail to display. As users stare longer, the system interprets this as increased interest and provides progressively more comprehensive information, creating a feedback loop that matches information delivery to actual user engagement levels.
Data Source
AI summary
A computer-implemented method includes detecting, at a wearable computing device, a first direction of a first stare, wherein the wearable computing device includes a head-mountable display unit, identifying a target based on the detected first direction, and based on a determination that a first time duration of the first stare is greater than or equal to a first predetermined time threshold, identifying information relevant to the target and displaying the identified information on the display unit. Subsequent to displaying the identified information, the method includes detecting a second stare that is directed at the target or at the displayed information, and based on a determination that a second time duration of the second stare is greater than or equal to a second predetermined time threshold, identifying additional information relevant to the target, and displaying the additional information on the display unit.