Contextual POI Filtering for Personal Navigation Devices
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Solution Overview
Problem
GPS-based navigation devices face difficulties in clearly displaying multiple points of interest (POIs) in close proximity, especially in urban areas, and often show irrelevant POIs based on a user's travel purpose, leading to cluttered and less useful maps.
Innovation Solution
A method and device that store POIs with category labels, allowing users to select and associate a travel category with their trip, displaying only relevant POIs based on the chosen category, thereby filtering out irrelevant information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all POIs are displayed on the navigation device, then the user can see all available points of interest, but the map becomes cluttered and irrelevant information is displayed
Solution Approach 1:
The patent extracts and filters POIs based on their category labels and the user's selected travel category. By taking out only the relevant POIs that match the travel category (e.g., restaurants, gas stations for business travel) and excluding irrelevant ones (e.g., scenic areas for business travel), the system reduces map clutter while preserving useful information.
Solution Approach 2:
The patent applies local quality by customizing the POI display according to the specific travel category selected by the user. Different travel categories (business, leisure, shopping) result in different POI sets being displayed, making the map display adaptive to local user needs rather than showing a uniform set of all POIs.
2Quantity of substance
If multiple POIs in close proximity are displayed, then the user can see all nearby points of interest, but the display becomes difficult to read and navigate
Solution Approach 1:
The patent removes irrelevant POIs from the display by filtering them out based on category matching. This extraction of only relevant POIs reduces the quantity of displayed markers in close proximity, making the display more readable and easier to navigate while still showing all pertinent information.
3Ease of operation
If POIs are filtered by travel category, then irrelevant POIs are excluded and map clutter is reduced, but the system complexity increases
Solution Approach 1:
The patent performs preliminary action by pre-defining travel categories (business, leisure, shopping, etc.) and their corresponding POI category labels before the user needs navigation. This pre-organization of category mappings simplifies the filtering process during actual navigation, as the system only needs to match pre-defined categories rather than implementing complex real-time filtering algorithms.
Solution Approach 2:
The patent changes the parameter of POI selection based on the travel category parameter. By using category labels as a filtering parameter, the system can easily switch between different POI sets depending on the selected travel category, providing flexible control without requiring complex adaptive algorithms.
Data Source
AI summary
A method of contextually displaying points of interest (POIs) on a personal navigation device according to a user's travel purpose includes storing a plurality of POIs into a memory of the personal navigation device, the POIs having corresponding POI category labels, entering a destination location into the personal navigation device and providing navigational instructions for a trip to the destination location, associating a travel category with the trip to the destination location, and displaying POIs whose corresponding POI category labels are included in the travel category associated with the trip to the destination location.