Navigation Device Image Capture for Obstructed Turn Visibility
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Solution Overview
Problem
Conventional navigation devices cannot display the area to be entered after turning at an intersection when a clear view is obstructed, leading to uncertainty in navigation, especially when the destination address or shop location is unknown.
Innovation Solution
A navigation device equipped with a storage unit for captured images, a display unit, and a control unit that captures and stores images of the area ahead or behind the mobile body before turning, allowing the user to view the area to be entered before making the turn.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional navigation methods are used to provide turn guidance, then the navigation device can guide users to intersections, but users cannot see what the area to be entered looks like when the view is obstructed
Solution Approach 1:
The navigation device captures images of the area to be entered after turning at an intersection before the user actually reaches that intersection. This preliminary capture and storage of visual information allows users to see what lies beyond the current obstructed view, enabling informed navigation decisions without adding complex hardware.
2Loss of information
If images are captured and stored for every intersection to show users the area to be entered, then users can see the destination area, but unnecessary image capturing and storage occurs
Solution Approach 1:
The navigation device uses feedback from the route guidance system to determine which intersections are actual turn points on the user's planned route. Only at these relevant turn points are images captured and stored, eliminating wasteful capture at all intersections and reducing energy consumption while maintaining visibility of destination areas.
Solution Approach 2:
Instead of uniformly capturing images at all intersections, the system applies local quality by selectively capturing images only at specific locations (turn points on the route) where visual information is actually needed, optimizing resource usage based on local requirements.
3Reliability
If the navigation device captures images of the area to be entered, then users can avoid wrong turns, but the device requires additional storage units and control logic
Solution Approach 1:
The navigation device achieves multi-functionality by using its existing display unit to show both the map route guidance and the captured images of the area to be entered. The control unit also serves dual purposes by managing both route calculation and image capture/display coordination. This universal use of existing components provides reliable turn direction information without significantly increasing device complexity.
Data Source
AI summary
A navigation device which stores a captured image of an area ahead of user in a moving direction after turning at an intersection and displays the captured image before turning at the intersection, includes: a first storage unit (HDD recording/playback unit 14) storing a map; a display unit (display unit 18); and a control unit (control unit 10) displaying the map on the display unit, and the navigation device further includes a second storage unit (HDD recording/playback unit 14) storing a captured image of an area to be entered after a turn is made at an intersection, and the control unit displays the captured image stored in the second storage unit on the display unit before a mobile body reaches the intersection.