Spatial Reference Identifier for Road Database Attributes
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Solution Overview
Problem
Conventional navigation systems face inefficiencies in generating and updating road segment attributes due to dependencies on syntax-specific linkages that vary between road database formats and versions, leading to the need for multiple attributes and increased bandwidth consumption.
Innovation Solution
A method that generates a spatial reference identifier based on road segment coordinates, allowing for the creation of a single attribute compatible across multiple road databases, independent of format and version, using a tile database and spatial reference identifier to accurately associate content with road segments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If attributes are associated with road segments using syntax-specific linkages (road segment identifiers) that vary between database formats and versions, then attributes can be properly specified for each specific database version, but multiple attributes must be generated for different formats and versions, increasing device complexity and bandwidth consumption
Solution Approach 1:
The patent applies universality by creating a single attribute specification system that works across multiple road database formats and versions. Instead of maintaining separate attribute specifications for each database version, the system uses a universal identifier that can be mapped to any database format, allowing one attribute to serve multiple database versions simultaneously.
Solution Approach 2:
The patent introduces an intermediary mapping layer between the attribute system and the road database. This intermediary uses coordinate-based spatial references that can be translated into any database format's identifier system, acting as a mediator that eliminates the need for multiple format-specific attributes while maintaining compatibility with all database versions.
2Reliability
If multiple attributes are generated for different road database formats and versions, then each attribute can be optimized for its specific format, but significant bandwidth is consumed during transmission to navigation subsystems
Solution Approach 1:
The patent merges multiple format-specific attributes into a single unified attribute specification. By combining the functionality of what would otherwise require separate attributes for different database versions into one coordinate-based attribute, the system transmits significantly less data to navigation subsystems while maintaining compatibility with all database formats.
3Reliability
If attributes are regenerated for every new road database version, then attributes remain compatible with the latest format, but time is consumed in the attribute generation process irrespective of whether underlying data changes
Solution Approach 1:
The patent performs preliminary action by establishing coordinate-based spatial references that are independent of any specific database version. These spatial references are created once and can be reused across multiple database versions, eliminating the need to regenerate attributes with each database update unless the actual road segment data changes.
Solution Approach 2:
The patent inverts the conventional approach by not tying attributes to database version identifiers. Instead of creating attributes that depend on database version syntax, the system creates attributes based on immutable spatial coordinates, then maps these to whatever database version is being used, reversing the dependency relationship.
Data Source
AI summary
In one embodiment, an attribute application associates content with a road segment. In operation, the attribute application generates a spatial reference identifier based on coordinates associated with the attribute. The attribute application then generates an attribute based on the content and the spatial reference identifier. Finally, the attribute application transmits the road segment attribute to a navigation system that performs at least one navigation operation based on a road database and the attribute. Because the attribute is specified based on spatial referencing, the attribute application requires fewer resources to generate attributes than conventional approaches that generate different attributes for different versions and formats of road databases.