Navigation System Dynamic Destination Filtering
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Solution Overview
Problem
Current navigation systems for motor vehicles face inefficiencies in destination input, often resulting in incorrect inputs and prolonged entry times due to the need to sift through numerous possible destinations.
Innovation Solution
A navigation system that uses an input device for alphanumeric entry and a display to show variable information, where possible destinations are dynamically filtered and highlighted based on proximity and size, limiting the selection to the most probable options, with features like touchscreen interaction and acoustic selection to streamline the destination selection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a full list of all possible destinations is displayed to the user, then the user can see all options and make an informed selection, but the time required to find and select the correct destination increases significantly
Solution Approach 1:
The system performs preliminary filtering of destinations based on the currently entered characters before the user finishes typing. By pre-calculating and displaying only the matching destinations, the system eliminates the need for users to search through the complete destination list, thus reducing selection time while maintaining ease of operation.
2Reliability
If the system displays all matching destinations regardless of relevance, then no potential destination is hidden, but the user must sift through many irrelevant options increasing input errors
Solution Approach 1:
The system applies different levels of filtering and highlighting to different destinations based on their relevance. Highly relevant destinations (those matching the entered characters) are prominently displayed, while less relevant ones are dimmed or hidden. This localized differentiation improves input accuracy without requiring complex global restructuring of the display system.
3Measurement precision
If the navigation system waits for complete destination input before showing results, then all possible destinations can be accurately identified, but the user experience is slowed down
Solution Approach 1:
The system performs destination matching and filtering in advance, as soon as the user starts entering characters, rather than waiting for complete input. This preliminary action allows the display to update dynamically with relevant destinations, maintaining precision while significantly improving entry speed.
Solution Approach 2:
The destination list is dynamically updated based on the current input state. As the user types each character, the system recalculates and refreshes the displayed destinations in real-time, allowing the interface to adapt to the user's input progress and provide relevant options at each stage rather than waiting for completion.
Data Source
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AI summary
The invention relates to a navigation system, in particular for a motor vehicle, for determining a route to a destination, wherein the navigation system comprises an input device for alphanumeric input of the destination and a display (4) for displaying changing information, and wherein the navigation system comprises a processing unit for displaying potential destinations in a representation of a map by means of the display (4) during input of the destination.