Navigation Device Dynamic Map Update via Bidirectional Communication
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Solution Overview
Problem
Existing navigation systems in vehicles face challenges in providing reliable and current navigation information, especially in complex regions not fully covered by initial map data, which are often outdated and require cumbersome updates.
Innovation Solution
A user device system with bidirectional communication interfaces allows for dynamic updating of map information by requesting and embedding additional navigation data from a central facility, enabling seamless integration and display of updated route sections, traffic comments, and graphic elements on an optical output device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If map data is updated by exchanging replacement memory (e.g., map data DVD), then map information can be updated, but the update process is complicated and occurs at large time intervals
Solution Approach 1:
The patent replaces the mechanical/physical update method (exchanging replacement memory or DVDs) with an electronic communication-based update method. The navigation device automatically downloads map data updates and traffic information through communication interfaces (GPS, mobile networks) from external servers, eliminating the need for physical media exchange and manual update processes.
2Reliability
If map data is updated by exchanging replacement memory, then map information can be updated, but updates occur at relatively large time intervals
Solution Approach 1:
The navigation device implements periodic automatic updates by continuously checking for and downloading map data and traffic information at regular intervals through communication interfaces. This ensures the navigation system remains current without requiring manual intervention at large time intervals, as the system automatically refreshes its data periodically.
Solution Approach 2:
The system employs feedback mechanisms where the navigation device continuously monitors its own data status, automatically detects when updates are available from external servers, and initiates downloads without user intervention. This closed-loop feedback system ensures map data remains current by constantly comparing local data with available updates.
3Reliability
If navigation information is requested from a central facility via second user device, then reliable and current navigation information can be provided, but device functionality and data transmission requirements increase
Solution Approach 1:
The navigation device integrates multiple communication functions within a single system, combining GPS reception, mobile network connectivity, and wireless communication capabilities. This multi-functional approach allows the device to request and receive navigation information through various communication channels without requiring separate dedicated devices, thereby reducing overall system complexity while maintaining reliability.
Data Source
AI summary
A first user device comprises a first communication interface and a second communication interface. The first user device has digital first map information and is configured for outputting a request message for making navigation information available with regard to at least one desired route section, at the first communication interface. The second communication interface is configured for receiving navigation information that is made available in response to the request message, at the second communication interface, and comprises digital second map information for at least a part of the at least one desired route section. The digital second map information comprises data for display of the at least one part of the at least one desired route section. The first user device is configured for determining digitally updated map information as a function of the digital second map information of the navigation information and of the digital first map information, and for selecting an optical output device for display of the digital updated map information.