In-Vehicle Lane Marking Display Transition for Smooth Source Switching

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Solution Overview

Problem

Existing in-vehicle display systems experience incompatibility issues when switching between different information sources for lane markings, leading to sudden position changes that cause discomfort for occupants.

Innovation Solution

Implement a display controller that gradually transitions or fades out/in lane markings when switching between different information sources, ensuring a smooth and consistent display.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the display is immediately switched between different information sources without transition effects, then the switching speed is fast and response time is short, but the lane marking position changes suddenly causing occupant discomfort and incompatibility

Engineering Contradiction:

Improveswitching speedVSAvoidoccupant discomfort

Core Design Contradiction:

SpeedVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary actions by fading out the current lane marking before fading in the new lane marking from the different information source. This sequential transition prepares the display state in advance to avoid sudden position changes, thereby reducing occupant discomfort while maintaining efficient switching.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The fade-in and fade-out transition effects act as intermediaries between the old and new lane marking displays. These transition effects smooth the position changes by gradually introducing the new lane marking while removing the old one, preventing abrupt visual shifts that cause occupant discomfort.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If fade-in and fade-out transitions are used when switching lane marking information sources, then occupant comfort is improved and position changes are smooth, but the switching time increases

Engineering Contradiction:

Improvedisplay coherenceVSAvoidswitching time

Core Design Contradiction:

Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The system applies partial transition effects only to the lane marking display portion rather than the entire display system. The fade-in and fade-out are applied selectively to maintain display coherence where needed while minimizing the overall time impact on the switching operation.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20250336114A1In-vehicle display device

Publication Date: 2025.10.30 TOYOTA JIDOSHA KK

AI summary

An in-vehicle display device displays a lane marking of a road on a display of a host vehicle. The in-vehicle display device includes: an acquisition unit configured to acquire camera lane marking information including information on a position of the lane marking and map lane marking information including information on a position of the lane marking; and a display controller configured to perform display of the lane marking. The display controller is configured to fade in the lane marking based on the map lane marking information after fading out the lane marking based on the camera lane marking information.