Eye Tracking Interface for Dynamic Display Brightness Control

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Solution Overview

Problem

Existing systems for protecting data on computing devices are inadequate as they fail to prevent unauthorized access, especially when the user is present but distracted or when unauthorized individuals attempt to peek at the screen, and they often degrade the user experience with hardware filters that dim the display unnecessarily.

Innovation Solution

The use of eye tracking technology to detect the presence and gaze of authorized users, automatically locking the interface and adjusting brightness to prevent unauthorized access without the need for hardware filters, while allowing intuitive data manipulation using gaze information to manage and move data between interfaces.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a hardware display filter is used to prevent unauthorized peeking, then data protection is improved, but the display brightness is reduced and user experience is degraded

Engineering Contradiction:
Improvedata protectionVSAvoiddisplay brightness
Core Design Contradiction:
ReliabilityVSIllumination intensity

Solution Approach 1:

The patent applies dynamics by making the display brightness adjustable based on detected user presence and gaze direction. The system dynamically transitions between normal brightness and dimmed states, allowing the display to adapt its illumination intensity in real-time rather than remaining static. This resolves the contradiction by providing protection only when needed while maintaining full brightness when the user is present and authorized to view the content.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent implements local quality by differentiating between authorized and unauthorized viewing conditions. The display brightness is adjusted locally based on the specific situation (user presence, gaze detection, authentication state) rather than applying a uniform filter to the entire display. This allows the system to maintain high brightness for authorized users while dimming only when unauthorized access is detected, resolving the brightness-protection contradiction.

Inventive Principle:
Principle #3Local quality

2Reliability

If manual locking is required to protect data, then data protection is improved, but user convenience is reduced and unauthorized access may occur if user forgets to lock

Engineering Contradiction:
Improvedata protectionVSAvoiduser convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent applies self-service by implementing automatic locking and unlocking functionality that operates without requiring user intervention. The system monitors user presence and activity, automatically locking the display when the user walks away or becomes inactive, and automatically unlocking when the authorized user returns. This eliminates the burden of manual locking while maintaining strong data protection, resolving the contradiction between protection reliability and operational convenience.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent implements preliminary action by proactively locking the display before unauthorized access can occur. The system detects user absence or inactivity and automatically triggers locking in advance, rather than waiting for the user to manually lock. This preemptive approach ensures data protection is already in place when the user returns, eliminating the risk of forgotten locking while maintaining convenience.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If multiple button combinations are required for data access, then data protection is improved, but ease of data manipulation is reduced

Engineering Contradiction:
Improvedata protectionVSAvoiddata manipulation ease
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the mechanical input system (physical button combinations) with an optical/electromagnetic system (eye tracking and gaze detection). Instead of requiring users to press specific button combinations, the system uses eye tracking to detect where the user is looking and automatically triggers data manipulation functions based on gaze position and duration. This substitution maintains security through sophisticated detection while dramatically improving ease of operation, resolving the contradiction between protection and manipulation ease.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS11592898B2Protection of and access to data on computing devices
Publication Date: 2023.02.28 TOBII TECH AB
  • US11592898B2 patent drawing
  • US11592898B2 patent drawing
  • US11592898B2 patent drawing

AI summary

Techniques for changing the presentation of information on a user interface based on presence are described. In an example, a computer system determines, based on an image sensor associated with the system, a first presence of a first user relative to a computing device. The computer system also determines an identifier of the first user. The identifier is associated with operating the computing device. The operating comprises a presentation of the user interface by the computing device. The computer system also determines, based on the image sensor, a second presence of a second person relative to the computing device. The computer system causes an update to the user interface based on the second presence.