Autonomous Driving Map Link Updates for Partial HD Map Changes

Solution Overview

Problem

Existing map data update systems require full updates of road link files even when only partial information has changed, leading to inefficiencies in capacity and time consumption.

Innovation Solution

An automatic driving control apparatus that determines and updates only specific sections of road link files, including entity, alignment, and location information, using a processor to recognize and replace or delete information as needed, based on comparison with server data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If all road link files are updated when map data changes, then data consistency is maintained, but capacity and time consumption increase significantly

Engineering Contradiction:

Improvedata consistencyVSAvoidupdate time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent segments road link files into three independent types: entity road link files (containing guide signs, speed signs, median strips), alignment road link files (containing road centerline and boundary information), and location road link files (containing GPS coordinates). This segmentation allows selective updating of only the affected file type when specific data changes, rather than updating all files, thereby reducing update time and capacity consumption while maintaining data consistency.

Inventive Principle:

Principle #1Segmentation

2Reliability

If all road link files are updated when map data changes, then data consistency is maintained, but capacity consumption increases significantly

Engineering Contradiction:

Improvedata consistencyVSAvoidcapacity consumption

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent segments road link files into three independent types: entity road link files (containing guide signs, speed signs, median strips), alignment road link files (containing road centerline and boundary information), and location road link files (containing GPS coordinates). This segmentation allows selective updating of only the affected file type when specific data changes, rather than updating all files, thereby reducing update time and capacity consumption while maintaining data consistency.

Inventive Principle:

Principle #1Segmentation

3Productivity

If partial information is updated in road link files, then capacity and time efficiency improve, but data consistency may be compromised

Engineering Contradiction:

Improveupdate efficiencyVSAvoiddata consistency

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent segments road link files into three independent types: entity road link files (containing guide signs, speed signs, median strips), alignment road link files (containing road centerline and boundary information), and location road link files (containing GPS coordinates). This segmentation allows selective updating of only the affected file type when specific data changes, rather than updating all files, thereby reducing update time and capacity consumption while maintaining data consistency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent implements a feedback mechanism where the automatic driving control apparatus compares its local road link files with server road link files to identify differences. When discrepancies are detected, the system selectively updates only the affected entity, alignment, or location road link files with the corrected data from the server, ensuring data consistency is maintained while optimizing update efficiency.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12612070B2Automatic driving control apparatus and method thereof

Publication Date: 2026.04.28 HYUNDAI MOTOR CO LTD

AI summary

An automatic driving control apparatus is provided. The automatic driving control apparatus includes a memory storing computer-executable instructions, a communication device that assists in communicating with a server, and at least one processor that accesses the memory and executes the instructions. The at least one processor is configured to determine information included in a road link file corresponding to a target section as entity information, alignment information, or location information, receives target information different from the information included in the road link file among pieces of information included in a server road link file which is stored in the server and corresponds to the target section from the server, recognizes a header of the received target information and updates the road link file, and control a vehicle based on updating the road link file.