Navigation Map Scrolling Traceback Mechanism
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Solution Overview
Problem
Conventional navigation systems snap back to the original position when the cancel key is pressed, causing users to lose previously viewed locations, especially after a long search, making it difficult to revisit desired areas.
Innovation Solution
A method and apparatus for a navigation system that records and evaluates stopped locations based on threshold values for paused time and distance, storing traceable locations in memory and allowing incremental tracing back to these locations when the cancel key is pressed, with data replacement when memory is full.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the map image snaps back to the original position when the cancel key is pressed, then the system returns to the default state quickly, but the user loses the searched location and cannot easily revisit it
Solution Approach 1:
The system performs preliminary action by recording the stopped location in memory before the user presses the cancel key. This allows the system to restore the searched location information when needed, preventing the loss of information while maintaining quick return to original position.
Solution Approach 2:
The system creates a copy of the stopped location data and stores it in memory. This copy preserves the searched location information independently from the current display state, allowing the user to revisit the location later without losing the search progress.
2Adaptability or versatility
If the system records all stopped locations during map scrolling, then the user can trace back to any previous location, but the device complexity increases
Solution Approach 1:
The system extracts only the essential location information (stopped location coordinates) from the complex map scrolling data and stores it in memory. This selective extraction reduces the complexity of data handling while maintaining the ability to trace back to previous locations.
Solution Approach 2:
The system changes the parameter representation by storing simplified location coordinates rather than complete map image data. This parameter transformation reduces memory requirements and simplifies the tracing back operation while preserving the essential functionality.
Data Source
AI summary
A map scrolling method and apparatus enables to incrementally tracing back to previous relevant locations of the map image. The method includes the steps of: recording information on a stopped location of a map image every time when a user stops during a map scrolling operation; comparing the recorded information with a predetermined threshold value to determine whether the information satisfies threshold value; recording the stopped location in a memory as a traceable location when the recorded information satisfies the threshold value; and tracing back to the map image of the traceable locations recorded in the memory, one by one, every time when the user presses a cancel key or its equivalent of the navigation system.