Traffic Data Overlay on Static Maps Without GPS Navigation
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Solution Overview
Problem
Current traffic data services are ineffective for vehicles without GPS-based navigation systems, as they rely on complex and costly navigation systems to provide real-time traffic information.
Innovation Solution
A system that decodes digital data streams from satellite radio to provide traffic data services without requiring GPS navigation, using a location determining module and displaying traffic data over static maps, allowing for overlay of traffic information on a limited functionality image of a road network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If GPS-based navigation systems are used to provide traffic data services, then real-time traffic information can be displayed, but hardware complexity and cost increase
Solution Approach 1:
The patent extracts the traffic data service functionality from the GPS-based navigation system by using satellite radio data streams. The system receives traffic information through satellite radio receivers and processes it independently, separating the traffic data service from navigation system requirements. This allows traffic data services to be provided in vehicles without GPS navigation systems.
Solution Approach 2:
The patent makes the traffic data service universal by enabling it to work with satellite radio receivers that are already present in many vehicles. The system uses existing satellite radio infrastructure and receivers, making the service available across a broader range of vehicles beyond those with navigation systems. The static map images with overlaid traffic data provide a universal interface that doesn't require navigation-specific hardware.
2Reliability
If GPS-based navigation systems are used to provide traffic data services, then real-time traffic information can be displayed, but hardware cost increases
Solution Approach 1:
The patent uses static map images instead of expensive dynamic navigation maps. These static images can be simple graphical representations that are updated periodically rather than requiring continuous, expensive real-time map data. The traffic data is overlaid on these static images, providing current information without the need for expensive navigation system hardware and software.
Solution Approach 2:
The patent creates a simplified representation of traffic data by overlaying symbolic indicators on static map images rather than using full navigation system rendering. This copying approach uses lightweight graphical overlays that convey traffic information without requiring the computational resources and hardware of a full navigation system.
3Loss of information
If navigation systems are used to display traffic data, then comprehensive traffic information can be provided, but memory and processing resources are consumed
Solution Approach 1:
The patent displays only the essential traffic information needed by the driver at their current location, rather than processing and displaying all available navigation data. The system focuses on showing traffic conditions, incidents, and flow information relevant to the driver's current context, using static map images with selective overlays rather than comprehensive navigation system processing.
Solution Approach 2:
The patent segments the traffic information display into discrete, manageable elements overlaid on static map images. Rather than requiring continuous processing of dynamic map data, the system divides the information into separate layers: static base maps and dynamic traffic data overlays. This segmentation reduces processing requirements while maintaining information completeness.
Data Source
AI summary
A non-navigation data system for providing traffic data service in a mobile environment can include a data decoder for decoding a digital data stream from a digital audio radio transmission source, location determining means (such as GPS or cellular location determining schemes) for determining a current location of a mobile receiver receiving the digital data stream, a display for displaying traffic data corresponding to the current location, and a plurality of static maps wherein the traffic data corresponding to the current location is overlaid at least over a portion of the static maps.