Vehicle HUD Windshield Blocking for Unauthorized Driver Prevention

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Solution Overview

Problem

Existing vehicle security systems fail to prevent unauthorized operation after unauthorized access, focusing instead on preventing access or providing alarms post-operation.

Innovation Solution

A vehicle HUD system that uses facial recognition to identify authorized occupants, blocking the windshield view with AR/VR techniques for unauthorized users and notifying the owner.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional security measures (alarms, access prevention) are used, then unauthorized access is detected or prevented, but unauthorized operation cannot be prevented after access is gained

Engineering Contradiction:

Improvevehicle securityVSAvoidunauthorized vehicle operation

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system performs preliminary facial recognition verification before allowing vehicle operation. When an unauthorized face is detected, the HUD proactively displays blocking content (such as obscured patterns or warnings) to prevent the unauthorized person from seeing through the windshield and operating the vehicle, rather than waiting for theft to occur before responding

Inventive Principle:

Principle #9Preliminary anti-action

Solution Approach 2:

The HUD display serves as an intermediary between the facial recognition system and the windshield view. It mediates by selectively blocking or allowing visual information passage based on authorization status, creating an additional security layer that prevents unauthorized operation even when physical access is obtained

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the HUD blocks the windshield view for unauthorized users, then unauthorized operation is prevented, but the HUD system complexity increases

Engineering Contradiction:

Improvevehicle securityVSAvoidHUD system

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The HUD display is designed to perform multiple functions: it provides normal driving information to authorized users, displays blocking content to unauthorized users, and can show warning messages. This multi-functionality allows the same hardware component to serve both security and information display purposes, minimizing additional system complexity

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system changes the display parameters of the HUD based on authorization status. When an unauthorized face is detected, the HUD alters its display content from normal driving information to blocking patterns or warning messages, dynamically adjusting its function without requiring physical reconfiguration or additional hardware

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250329275A1Systems and methods to prevent unauthorized vehicle operation using a heads-up display

Publication Date: 2025.10.23 HARMAN INT IND INC

AI summary

A method includes identifying a vehicle start, detecting a face of an occupant in response to identifying the vehicle start, and performing facing recognition on the detected face. The method further includes determining whether the detected face is associated with an authorized occupant for the vehicle and controlling a HUD system to display normal HUD information in response to determining that the detected face is associated with the authorized occupant for the vehicle. The HUD display is further controlled to perform windshield view blocking in response to determining that the detected face is not associated with the authorized occupant for the vehicle.