Route Guidance System Selective Lane Data Display
Solution Overview
Problem
Existing navigation systems generate large lane lists due to high precision in identifying vehicle position, leading to excessive data that exceeds the maximum drawing area of the displaying unit.
Innovation Solution
A route guidance system that includes a current position detecting unit, a display condition determination processing unit, and a list display processing unit to determine and set relevant lane data for display, omitting unnecessary data to prevent the lane list from becoming too large.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high precision feature data is generated for each type of boundary line to accurately identify vehicle position, then measurement precision of vehicle position is improved, but the quantity of lane data increases causing the lane list to exceed the maximum drawing area
Solution Approach 1:
The patent extracts and displays only the necessary lane data that is relevant to the vehicle's current position and upcoming intersections, while omitting unnecessary lane data. This selective extraction reduces the quantity of displayed lane data to fit within the drawing area while maintaining sufficient precision for accurate vehicle position identification and route guidance.
2Manufacturing precision
If lane data is generated for each different type of boundary line and traffic separation mark, then manufacturing precision of lane data is improved, but the device complexity increases due to multiple lane groups
Solution Approach 1:
The patent extracts only the essential lane data required for current route guidance needs, omitting redundant data about different boundary line types and traffic separation marks. This reduces the number of lane groups and simplifies the lane list structure while maintaining the precision needed for accurate lane identification and guidance.
3Loss of information
If all lane data within the display section is shown to provide complete route information, then information completeness is improved, but the area required for display exceeds the maximum drawing area
Solution Approach 1:
The patent extracts and displays only the necessary lane data that is relevant to the vehicle's current position and upcoming intersections, omitting redundant lane data. This selective display maintains sufficient route information completeness for safe and accurate guidance while ensuring the total display area remains within the maximum drawing area of the display device.
Data Source
AI summary
A route guidance system includes: a current position detecting unit; a display condition determination processing unit that determines, for each of pieces of lane data that correspond to a lane list display section set in a forward direction of a vehicle position, whether a display condition for creating a lane list is satisfied, based on the pieces of lane data; a display setting processing unit that sets a piece of the lane data that satisfies the display condition as a display target; and a list display processing unit that displays the lane list based on the piece of the lane data that has been set as the display target. Thus, the piece of the lane data that satisfies the display condition is set as the display target, and the lane list is displayed based on the piece of the lane data that has been set as the display target. Consequently, the size of the lane list can be prevented from becoming too large.