Navigation Device Temporal Map Visualization
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Solution Overview
Problem
Navigation devices do not effectively utilize historical information from map databases, limiting their ability to provide enhanced functionality and display temporal changes in road networks and buildings.
Innovation Solution
A navigation device and method that stores both current and historical map object configurations, allowing users to select a time input to view changes in map objects, with graphical representations showing both current and historical configurations simultaneously, enabling the display of temporal changes in road networks and buildings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If historical information is stored in map databases, then the amount of information available increases, but the device complexity increases
Solution Approach 1:
The patent segments the map database into current configuration data and historical attributes, allowing the system to manage large amounts of information through structured organization. Historical attributes are stored separately with time references, enabling selective retrieval without overwhelming the entire database structure.
Solution Approach 2:
The system dynamically selects and retrieves historical attributes based on time selection inputs from users. The processing device filters and accesses only the relevant historical data needed for the current display, making the system adaptable to user needs while managing complexity through on-demand data retrieval.
2Measurement precision
If both current and historical configurations are displayed, then the recognition quality improves, but the ease of operation decreases
Solution Approach 1:
The system pre-processes and pre-organizes historical attributes with time references before user interaction. When a user selects a time period, the processing device has already prepared the relevant historical data, enabling quick retrieval and display without requiring complex real-time processing during user interaction.
Solution Approach 2:
The processing device acts as an intermediary between the user's time selection input and the historical data storage. It mediates by filtering, selecting, and formatting the appropriate historical attributes based on the user's choice, simplifying the interaction while maintaining high recognition quality through accurate temporal data retrieval.
3Productivity
If historical attributes are selectively accessed for route guidance, then the productivity increases, but the loss of information increases
Solution Approach 1:
The system applies partial action by selectively accessing only the specific historical attributes needed for route guidance at given times, rather than retrieving all historical data. This targeted approach improves processing efficiency and productivity while minimizing information loss by preserving complete historical records when needed.
Data Source
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AI summary
An electronic map (22) is output based on map data which comprises information on a current configuration (31, 36) for a plurality of map objects and historical attributes for at least some map objects. The historical attribute associated with a map object includes information on a historical configuration (32, 37) of the respective map object in the past. A time selection input is received at a user interface. The map data is processed to identify a map object (30; 35) which has a current configuration (31, 36) different from a historical configuration (32, 37) at a time in the past which is determined based on the time selection input. An optical output device (20) is controlled to output a graphical representation (31, 32, 36, 37) of the identified map object (30; 35) which is dependent on both the current configuration (31, 36) and the historical configuration (32, 37) of the identified map object.