HUD Windshield Blocking for Unauthorized Vehicle Operation

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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 system using a heads-up display (HUD) to identify occupants through facial recognition, blocking the windshield view for unauthorized users and providing notifications to authorized parties.

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 securityVSAvoidsecurity system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The HUD system is made multi-functional by enabling it to both display driving information and block the windshield view for unauthorized drivers. This existing display infrastructure is repurposed for security functions, avoiding the need for separate complex security hardware while maintaining reliable unauthorized operation prevention

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If the HUD blocks the windshield view for unauthorized drivers, then unauthorized operation is prevented, but the authorized driver's view and HUD functionality are limited

Engineering Contradiction:

Improveunauthorized operation preventionVSAvoidauthorized driver usability

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The HUD system dynamically adjusts its behavior based on driver authorization status. For authorized drivers, the HUD displays normal driving information with transparent or minimally obstructive elements. For unauthorized drivers, the system activates blocking display elements that obscure the windshield view. This dynamic adaptation ensures ease of operation for authorized users while maintaining security against unauthorized use

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If facial recognition is implemented to identify authorized occupants, then unauthorized drivers can be identified, but the system complexity and detection difficulty increase

Engineering Contradiction:

Improveoccupant identification accuracyVSAvoidfacial recognition implementation

Core Design Contradiction:

Measurement precisionVSDifficulty of detecting and measuring

Solution Approach 1:

The system uses an intermediary facial recognition system that bridges the gap between simple access detection and complex security measures. The facial recognition technology serves as a mediator that accurately identifies authorized occupants and triggers the appropriate HUD response, integrating seamlessly with the existing vehicle systems without requiring overly complex implementation

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP4635806A1Systems and methods to prevent unauthorized vehicle operation using a heads-up display

Publication Date: 2025.10.22 HARMAN INT IND INC

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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.