Eye Tracking System for Simultaneous Multi-Target Visual Recognition
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Solution Overview
Problem
Current characteristic testing systems that rely on eye movements to assess user characteristics, such as dementia or cognitive function, are inefficient and burdensome due to the time required to determine if multiple targets are seen by the user.
Innovation Solution
A characteristic testing system that includes a line of sight detection unit, target display unit, and visual recognition determination unit, which uses polar coordinates to detect and analyze eye movement to determine if targets are visually recognized, allowing for simultaneous display of multiple targets and efficient testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple targets are sequentially displayed and determination is carried out for each target, then measurement precision of visual recognition is improved, but loss of time increases and productivity decreases
Solution Approach 1:
The patent combines multiple target determinations into a single visual field map. Instead of sequentially processing each target individually, the system displays multiple targets simultaneously on a visual field map and performs determination for all targets in parallel, merging multiple testing operations into one unified process that reduces total testing time while maintaining accuracy.
Solution Approach 2:
The patent transitions from sequential one-dimensional target presentation to two-dimensional spatial distribution of multiple targets on a visual field map. By arranging targets across different locations in the visual field simultaneously, the system enables parallel determination across multiple spatial dimensions, dramatically reducing the time required while preserving measurement precision.
2Productivity
If multiple targets are simultaneously displayed and determination is carried out, then productivity is improved and testing time is reduced, but device complexity increases
Solution Approach 1:
The patent implements a universal determination mechanism that handles multiple targets simultaneously through a single visual field map processing system. The determination unit is designed to process all targets displayed on the visual field map in one operation, making the system multi-functional capable of handling any number of targets without requiring separate processing mechanisms for each target.
Solution Approach 2:
The patent introduces a visual field map as an intermediary structure that organizes and manages multiple targets. Rather than directly managing complex interactions between multiple individual target processing systems, the visual field map serves as a mediating layer that simplifies the overall system architecture, enabling simultaneous determination while keeping device complexity manageable.
3Device complexity
If sequential target determination is performed, then device complexity is kept simple, but loss of time increases and user burden increases
Solution Approach 1:
The patent merges multiple determination operations into a single unified process displayed on the visual field map. Users perceive this as a single testing operation rather than multiple sequential steps, reducing the perceived burden and improving ease of operation while maintaining comprehensive measurement capability.
Solution Approach 2:
The patent enables continuous determination processing for all targets simultaneously displayed on the visual field map. Rather than pausing between individual target assessments, the system performs continuous parallel determination across all targets, reducing total testing time and minimizing user engagement duration, thereby reducing user burden.
Data Source
AI summary
A characteristic testing system may comprise a line of sight detection unit, a target display unit, a visual recognition determination unit, and a characteristic testing unit. The line of sight detection unit may detect a line of sight of the user and output information pertaining to a direction of the line of sight. The target display unit may cause targets to be displayed. The visual recognition determination unit may carry out determination as to whether or not the user has visually recognized targets. The characteristic testing unit may control the target display unit and carry out testing with respect to the characteristic of the user based on movement of the line of sight when the targets are displayed. The characteristic testing unit may comprise a multiple target testing unit that carries out testing with respect to the characteristic of the user when a plurality of targets are simultaneously displayed.