Multi Display Eye Tracking Gaze Vector Matrix
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Solution Overview
Problem
Current information handling systems require separate eye tracking modules for each display, limiting the ability to track gaze inputs across multiple displays efficiently.
Innovation Solution
A shared eye tracking module uses a gaze vector matrix to extend gaze tracking across multiple displays, mapping gaze vector coordinates to display surface locations to determine input values, allowing for calibration and accurate input detection across multiple displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a separate eye tracking module is used for each display, then accurate gaze tracking can be achieved for each display, but the device complexity and cost increase
Solution Approach 1:
The patent makes a single eye tracking module serve multiple displays by extending its gaze tracking capability across multiple display surfaces. The eye tracking module is configured to track gaze positions on any display within its field of view, eliminating the need for separate modules for each display while maintaining tracking accuracy
Solution Approach 2:
The patent combines multiple display surfaces into a unified gaze tracking space by creating an extended gaze vector matrix that spans across all displays. This merging approach allows the single eye tracking module to treat multiple displays as one continuous tracking area, reducing hardware complexity
2Measurement precision
If eye tracking is calibrated for each display separately, then accurate mapping is achieved, but the calibration process becomes time-consuming
Solution Approach 1:
The patent merges the calibration processes for multiple displays into a single unified calibration procedure. By treating all displays as part of an extended gaze vector matrix, the system performs one calibration that establishes coordinate mappings for all displays simultaneously, rather than requiring separate calibrations for each display
Solution Approach 2:
The patent performs preliminary configuration of the extended gaze vector matrix to pre-establish the coordinate system relationships between the eye tracking module and multiple displays. This preliminary setup creates a unified reference framework that simplifies subsequent calibration operations
Data Source
AI summary
Eye tracking across multiple displays is supported with re-definition of a gaze vector matrix that correlates a surface of a first display with detected eye gazes as inputs to an information handling system to include a surface of a second display. Eye gazes that correlate to the second display are mapped to the redefined gaze vector matrix, such as with a calibration performed by a user or an estimate derived from tracked eye gazes. The information handling system applies a map of display surface areas to the gaze vector matrix to sort reported eye gazes as at a location of the first display surface, a location of the second display surface or discarded as outside of either display surface.