Dual-Update Map Guidance Using Autonomous Driving Data

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Solution Overview

Problem

Navigation systems face incongruity issues due to infrequent updates of map information, leading to discrepancies between provided map data and the actual road environment, affecting driving guidance accuracy.

Innovation Solution

Implementing a map information-providing system that utilizes two distinct updating periods for map information, where newer map information for autonomous driving is used to supplement and correct navigation map information, ensuring higher consistency with the actual road environment and providing missing items.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If map information is updated at fixed intervals to reduce costs and processing time, then updating costs and processing time are reduced, but discrepancy between map information and actual road environment increases

Engineering Contradiction:

Improveupdating costsVSAvoidaccuracy of map information

Core Design Contradiction:

Loss of energyVSReliability

Solution Approach 1:

The system dynamically adjusts the update frequency of map information based on the type of map data. Navigation map information is updated at fixed intervals to control costs, while autonomous driving map information is updated more frequently to maintain accuracy. The system selectively combines these different update frequencies to resolve the contradiction between cost reduction and accuracy maintenance.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The map information is segmented into two distinct types: navigation map information and autonomous driving map information. Each segment is updated at different frequencies according to its specific requirements. This segmentation allows the system to reduce overall updating costs while maintaining high accuracy for critical autonomous driving functions.

Inventive Principle:

Principle #1Segmentation

2Loss of time

If map information is updated at fixed intervals, then processing time is reduced, but incongruity between provided map information and actual road environment increases

Engineering Contradiction:

Improveprocessing timeVSAvoidconsistency with actual road environment

Core Design Contradiction:

Loss of timeVSReliability

Solution Approach 1:

The system implements dynamic update scheduling where navigation map information is updated at fixed intervals to minimize processing time, while autonomous driving map information is updated more frequently to ensure consistency with the actual road environment. This dynamic approach resolves the contradiction between processing time and reliability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the update period parameter for different types of map information. Navigation map information uses a longer update period to reduce processing time, while autonomous driving map information uses a shorter update period to maintain consistency with the actual road environment, thereby resolving the contradiction.

Inventive Principle:

Principle #35Parameter changes

3Loss of energy

If navigation map information is updated infrequently, then updating costs are reduced, but driving guidance accuracy decreases

Engineering Contradiction:

Improveupdating costsVSAvoiddriving guidance accuracy

Core Design Contradiction:

Loss of energyVSMeasurement precision

Solution Approach 1:

The system segments map information into navigation components and autonomous driving components. Navigation map information is updated infrequently to reduce costs, while autonomous driving map information is updated frequently to maintain driving guidance accuracy. This segmentation allows cost reduction without sacrificing guidance precision.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The autonomous driving map information acts as an intermediary that supplements the navigation map information. When navigation map information is not updated, the autonomous driving map information provides current road data to maintain driving guidance accuracy, thereby resolving the contradiction between updating costs and guidance precision.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11867522B2Map information-providing system, map information-providing method, and map information-providing program

Publication Date: 2024.01.09 PIONEER IP

AI summary

A map information-providing system, a map information-providing method, and a map information-providing program which can provide map information while suppressing incongruity a recipient feels are provided. A navigation system-(map information-providing system) includes a storage unit-storing map information for navigation (first map information) and map information for autonomous driving (second map information) an updating period thereof is different from the map information for navigation with respect to at least a portion of a period of time, and a map information-providing unit which performs driving guidance by providing at least a portion of items to be provided by the map information for navigation using the map information for autonomous driving in a case where the map information for autonomous driving bad been updated based on newer information than the map information for navigation at a time of performing driving guidance.