In-Vehicle Lane 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 marking display, leading to sudden positional deviations that cause discomfort for occupants.

Innovation Solution

The in-vehicle display device employs fade-in/fade-out and gradual transition techniques when switching between different lane marking information sources to minimize positional discrepancies and reduce occupant discomfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If the display is immediately switched between different lane marking information sources, then the switching speed is improved, but the occupant experiences incompatibility and discomfort due to sudden positional deviations

Engineering Contradiction:

Improveswitching speedVSAvoidoccupant discomfort

Core Design Contradiction:

SpeedVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary actions by displaying a transition indicator before completing the lane marking display switch. This warning signal is shown in advance to alert occupants of the upcoming positional change, reducing surprise and discomfort while maintaining efficient switching capability

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

A transition indicator serves as an intermediary element between the old and new lane marking displays. This mediator communicates the switching process to occupants, bridging the gap between different information sources and reducing the perceived incompatibility

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If the lane marking position is gradually transitioned between information sources, then occupant comfort is improved, but the switching time is increased

Engineering Contradiction:

Improveoccupant discomfortVSAvoidswitching time

Core Design Contradiction:

Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The system displays a transition indicator in advance before the actual lane marking position change occurs. This preliminary warning allows occupants to mentally prepare for the positional adjustment, enabling faster switching without causing discomfort

Inventive Principle:

Principle #10Preliminary action

3Speed

If the lane marking is suddenly disappeared or reappeared at a different position, then the display responsiveness is improved, but the occupant experiences incompatibility

Engineering Contradiction:

Improvedisplay responsivenessVSAvoidoccupant incompatibility feeling

Core Design Contradiction:

SpeedVSObject-affected harmful factors

Solution Approach 1:

Before the lane marking suddenly disappears or reappears at a new position, the system first displays a transition indicator to warn occupants of the impending change. This maintains rapid display responsiveness while reducing the incompatibility feeling through advance notification

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4640468A1In-vehicle display device

Publication Date: 2025.10.29 TOYOTA JIDOSHA KK

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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.