Gaze-Based Explanation Tracking for Real-Time Understanding Gaps

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Solution Overview

Problem

There is a significant gap in awareness and recognition between information senders and receivers in real-time information transmission, leading to communication breakdowns and ineffective understanding in settings like classes and meetings.

Innovation Solution

An information providing device and method that utilizes a communication device and arithmetic device to acquire and analyze the explanation position of the provider and gaze position of the receiver, specifying an information exchange gap and generating advice to eliminate this gap.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If information is transmitted in real-time at the sender's pace, then the sender can maintain their explanation flow, but the recipient cannot keep up and understanding gaps expand

Engineering Contradiction:

Improveinformation transmission speedVSAvoidunderstanding gap between sender and recipient

Core Design Contradiction:

SpeedVSLoss of information

Solution Approach 1:

The system implements feedback by detecting the recipient's gaze direction and comparing it with the sender's explanation position. When a gap is detected (gaze position lags behind explanation position), the system provides feedback to adjust the transmission speed or provide additional explanations, ensuring the recipient can follow along without falling behind.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The information transmission system dynamically adjusts based on real-time gaze analysis. The explanation speed and pacing are not fixed but adapt according to the recipient's attention state, allowing the system to slow down when the recipient is struggling to keep up while maintaining efficiency when understanding is good.

Inventive Principle:

Principle #15Dynamics

2Duration of action of moving object

If the sender continues explaining without pause, then the explanation flow is maintained, but the recipient accumulates frustration and fails to understand

Engineering Contradiction:

Improvecontinuous explanation durationVSAvoidrecipient frustration and communication breakdown

Core Design Contradiction:

Duration of action of moving objectVSObject-generated harmful factors

Solution Approach 1:

The system introduces periodic pauses and checks during the explanation process by continuously monitoring gaze position. Instead of continuous uninterrupted explanation, the system periodically assesses whether the recipient is keeping up and inserts appropriate pauses or reinforcement explanations when gaps are detected, preventing frustration accumulation.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system performs preliminary detection of understanding gaps before they lead to frustration. By continuously analyzing gaze direction and comparing it with explanation position, the system identifies when the recipient is falling behind and takes preventive action (adjusting pace, providing hints) before the gap becomes large enough to cause communication breakdown.

Inventive Principle:

Principle #10Preliminary action

3Reliability

If gaze analysis is implemented to detect understanding gaps, then communication effectiveness improves, but system complexity increases

Engineering Contradiction:

Improvecommunication effectivenessVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system uses gaze direction as an intermediary indicator to infer understanding state. Instead of directly measuring complex cognitive understanding, the system uses the easier-to-measure gaze position as a mediator that correlates with comprehension status, simplifying the detection mechanism while maintaining reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system replaces complex direct assessment of understanding (which would require sophisticated interaction and questioning mechanisms) with optical-based gaze tracking. This substitution uses eye movement detection to infer cognitive state, reducing system complexity while maintaining effective monitoring of recipient comprehension.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20260053404A1Information providing device and information providing method

Publication Date: 2026.02.26 HITACHI LTD

AI summary

To support elimination of a gap in awareness and recognition among participants who engage with information in a situation where the information is provided in real time. An information providing device has a configuration including: a communication device configured to perform data communication with another apparatus; and an arithmetic device configured to execute processing of acquiring, from an observation unit configured to observe a situation in which information is explained by a provider of the information, information regarding an explanation position of the provider in the information, processing of acquiring, from a gaze analysis unit configured to estimate a gaze direction of a receiver who receives the explanation of the information, information regarding a gaze position of the receiver, and processing of specifying and outputting an information exchange gap between the provider and the receiver based on the information regarding each of the explanation position and the gaze position.