Navigation Device Using Digitized Map Image Calibration
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Solution Overview
Problem
Conventional GPS-based navigation devices are complex and costly, requiring pre-loaded navigation data specific to the region, making them expensive for users and difficult to use in unknown territories.
Innovation Solution
A method and device for computer-aided navigation using a digitized map image stored in a data memory, where space coordinates are determined and calibrated, allowing any type of map to be used for navigation, eliminating the need for special navigation data and reducing technical complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional GPS-based navigation devices are used, then navigation accuracy is improved, but device complexity and cost increase due to pre-loaded navigation data requirements
Solution Approach 1:
The patent uses a digitized image copy of the map instead of requiring complex pre-loaded navigation data. The digitized map image serves as a simplified representation that can be processed to determine position, replacing the need for detailed vector-based navigation databases while maintaining sufficient accuracy for the application.
Solution Approach 2:
The invention uses readily available digitized map images that can be obtained through simple means (photographs, scans) rather than expensive proprietary navigation data. These images can be created and used without requiring specialized data collection equipment or licensed databases, significantly reducing costs and complexity.
2Measurement precision
If conventional GPS-based navigation devices are used, then navigation accuracy is improved, but user cost increases due to purchasing navigation data
Solution Approach 1:
The patent replaces expensive proprietary navigation data with freely obtainable digitized map images. Users can create their own navigation data by photographing or scanning maps, eliminating the need to purchase specialized navigation databases and significantly reducing user costs.
Solution Approach 2:
The system allows users to generate their own navigation data by capturing images of maps and processing them through the calibration procedure. This self-service approach eliminates dependency on commercial navigation data providers and reduces costs for users.
3Reliability
If conventional GPS-based navigation devices are used, then navigation reliability is improved, but adaptability decreases due to region-specific data requirements
Solution Approach 1:
The patent creates a universal navigation system that works with any digitized map image regardless of region. The calibration process using reference positions and supplementary calibration information makes the system adaptable to any location, eliminating the need for region-specific navigation data and enabling use in unknown territories.
Solution Approach 2:
The system dynamically adapts to different regions through the calibration process. Instead of requiring pre-configured data for each region, the system calibrates itself using reference positions and supplementary calibration information extracted from the digitized map image, making it flexible and adaptable to any location.
Data Source
AI summary
A digitized image of a map is stored in a data memory. At least one point of the image of the map is selected as reference point. Space coordinates of the location which corresponds to the reference point are determined and allocated to the reference point. A supplementary calibration information item which enables the image of the map to be calibrated in space coordinates is determined. A mobile radio telephone has a navigation device which is set up for carrying out the method.