Vehicle AR Lane Display Control Based on Sensor Reliability

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Solution Overview

Problem

Existing vehicle display systems struggle to accurately form augmented reality (AR) images that conform to lane dividing lines, leading to potential overlap with obstacles and occupant annoyance.

Innovation Solution

A vehicle display control device that forms AR images based on sensor reliability, adjusting the length of the images in the lane extension direction to minimize overlap with obstacles, and disabling image formation when reliability is below a threshold.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the AR image length is extended to ensure coverage of the lane dividing line, then the likelihood of overlapping with obstacles increases, but the coverage and visibility of the lane guidance is improved

Engineering Contradiction:
ImproveAR image coverage areaVSAvoidOverlap with obstacles
Core Design Contradiction:
Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The patent applies dynamics by making the AR image length adjustable based on sensor reliability. When sensor reliability is high, the AR image length is extended to provide comprehensive lane guidance coverage. When sensor reliability is low, the AR image length is reduced to minimize overlap with obstacles. This dynamic adjustment resolves the contradiction between maintaining adequate coverage and avoiding harmful overlaps.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of AR image length based on sensor reliability conditions. By modifying this parameter dynamically, the system optimizes the balance between providing sufficient lane guidance coverage and preventing unwanted overlap with obstacles, thereby resolving the technical contradiction.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If the AR image is formed using sensor data with low reliability, then the shape may not conform accurately to the dividing line, but the system can still provide continuous guidance

Engineering Contradiction:
ImproveContinuous guidance provisionVSAvoidShape conformity to dividing line
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The system dynamically adjusts AR image formation based on sensor reliability. When reliability is high, the full AR image is formed for accurate shape conformity. When reliability is low, the system reduces AR image length or suppresses formation to maintain productivity while accepting reduced precision, thus resolving the contradiction between continuous guidance and shape accuracy.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

When sensor reliability is low, the system performs partial action by forming only a portion of the AR image or suppressing its formation entirely, rather than forming the complete image. This approach maintains continuous guidance functionality while avoiding the precision issues that would arise from forming an inaccurate full image.

Inventive Principle:
Principle #16Partial or excessive action

3Object-affected harmful factors

If the AR image length is reduced to avoid overlapping with obstacles, then the coverage of lane guidance is improved, but the visibility and informational value is reduced

Engineering Contradiction:
ImproveOverlap with obstaclesVSAvoidLane guidance information
Core Design Contradiction:
Object-affected harmful factorsVSLoss of information

Solution Approach 1:

The system uses sensor reliability as feedback to determine the appropriate AR image length. This feedback mechanism ensures that the AR image length is optimized based on current detection conditions, maintaining adequate lane guidance information while avoiding overlap with obstacles. The feedback loop resolves the contradiction by dynamically balancing coverage and information quality.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system changes the AR image length parameter based on sensor reliability conditions. When reliability is high, the parameter is increased to provide comprehensive lane guidance information. When reliability is low, the parameter is reduced to avoid obstacle overlap, thus resolving the contradiction between maintaining information quality and avoiding harmful overlaps.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12600235B2Vehicle display control device, vehicle display control method, and non-transitory recording medium
Publication Date: 2026.04.14 TOYOTA JIDOSHA KK
  • US12600235B2 patent drawing
  • US12600235B2 patent drawing
  • US12600235B2 patent drawing

AI summary

The present disclosure provides a vehicle display control device including a processor and an image forming section configured to form an AR image having a shape that conforms to a dividing line of a lane in which a vehicle travels, using information from a sensor that recognizes the dividing line, wherein the processor is configured to control the image forming section so as to form the AR image, and determine a length, in an extension direction of the lane, of the AR image that the image forming section is caused to form, based on a reliability of a detection result of the sensor.