Navigation Device POI Evaluation Filtering
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Solution Overview
Problem
Conventional portable navigation devices (PNDs) become cluttered and difficult to use as the number of Point of Interest (POI) entries increases, as landmarks are not sorted or filtered by user preferences, leading to a complex map screen that complicates user navigation.
Innovation Solution
A navigation device that allows users to set evaluation values for POIs, generating user-rated and mouth-to-mouth advertising-rated information, which is then used to prioritize and display only relevant POIs on the map screen, based on user preferences, thereby simplifying the display and improving usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all POIs are displayed on the map screen, then the information completeness is improved, but the display complexity increases and usability deteriorates
Solution Approach 1:
The patent segments POI information by assigning evaluation values (ratings) to different categories such as restaurants, hotels, and attractions. This allows the system to divide and organize numerous POIs into manageable groups based on user preferences, preventing information overload while maintaining completeness through categorized presentation.
Solution Approach 2:
The patent introduces evaluation values as a new parameter to filter and prioritize POIs. By changing the display parameter from showing all POIs equally to showing POIs ranked by evaluation values, the system maintains information completeness while improving usability through selective presentation based on user-defined criteria.
2Quantity of substance
If the number of POIs increases, then the information coverage is improved, but the screen clutter increases and visual clarity deteriorates
Solution Approach 1:
The patent extracts and highlights only the POIs with high evaluation values from the complete set of POIs. By taking out and prioritizing relevant information based on user preferences, the system maintains comprehensive data storage while presenting only the most relevant items on screen, reducing clutter while preserving information coverage.
Solution Approach 2:
The patent applies partial action by displaying only a subset of POIs (those meeting evaluation criteria) rather than all POIs. This selective presentation reduces screen complexity while maintaining sufficient information coverage for user needs, avoiding the excessive action of displaying every single POI.
3Ease of operation
If POIs are sorted by user preferences, then the usability is improved, but the system complexity increases
Solution Approach 1:
The patent implements self-service by allowing users to set their own evaluation values and preferences for different POI categories. The system automatically sorts and filters POIs based on these user-defined parameters, improving usability through personalized results while minimizing system complexity by using straightforward rating and filtering mechanisms.
Data Source
AI summary
The present invention provides a navigation device that improves the usability. The navigation device includes an evaluation setting unit that generates position information having first evaluation value by setting an evaluation value selected by a user so that the evaluation value corresponds to position information, a position information extraction unit that extracts, of the position information having the first evaluation value, the position information having the first evaluation value corresponding to the evaluation value desired by the user, and a display control unit that displays a position information screen having evaluation value on which the position information having the first evaluation value extracted by the position information extraction unit is reflected on a display unit.