See-through Display for Navigation Alignment
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Solution Overview
Problem
Conventional portable terminal devices display routes in two dimensions, making it difficult for users to determine the direction shown on the map relative to their actual surroundings, as the displayed direction often differs from the user's line of sight.
Innovation Solution
A portable terminal device with a see-through display module that allows users to view their surroundings while displaying the route to a destination position, using a combination of sensors and modules to align the map display with the user's line of sight, including a display control module, storage module, position obtaining module, and comparison module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a two-dimensional map display is used to show the route, then the route information can be displayed, but the user cannot easily determine the direction shown on the map relative to their actual surroundings
Solution Approach 1:
The display module changes its optical properties by becoming see-through in specific areas, allowing users to simultaneously view both the route information and the actual surrounding scenery. This visual integration helps users understand the relationship between the displayed direction and their actual orientation without needing to mentally rotate or compare separate views.
2Loss of information
If the map display shows overhead view of roads and buildings, then complete route information is provided, but the display direction differs from the user's horizontal line of sight
Solution Approach 1:
The display module applies different optical properties to different regions: certain areas remain opaque to display route information, while other areas become see-through to show the actual surrounding scenery. This local differentiation allows users to simultaneously access both the overhead map view and the horizontal view of their surroundings, eliminating the need to mentally align different perspectives.
Data Source
AI summary
A portable terminal device includes a display module which can be set to be in a see-through state that a user can see-through a scenery behind, a display control module which controls the display module, a storage module which stores a destination position, a position obtaining module which obtains a current position, and a comparison module which compares the destination position and the current position. Then, the display control module displays information showing the destination position on the display module according to a comparison result of the comparison module, and sets a display area other than information showing the destination position on the display module to be in the see-through state.