Navigational Display Orientation Handling for Readable Text and Fixed Maps
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Solution Overview
Problem
Conventional navigational information display devices do not adapt to changes in screen orientation, making it difficult for users to read characters and maintain the correspondence between geographical positions and screen positions when the display orientation is altered.
Innovation Solution
A navigational information display device that allows the display orientation of characters to change with the screen orientation while maintaining the orientation of navigational images, ensuring that users can easily read information without relearning the correspondence between geographical positions and screen positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the screen display orientation is changed, then the readability of characters is improved, but the correspondence relation between geographical position and screen position becomes difficult to grasp
Solution Approach 1:
The display elements are segmented into two distinct categories: characters (text information) and navigational images (visual spatial information). This segmentation allows independent transformation of each element type in response to screen orientation changes, resolving the contradiction by applying different orientation handling strategies to different segments of the display content.
Solution Approach 2:
The system dynamically adjusts the display orientation of characters based on the screen's current orientation, while keeping navigational images static. This dynamic adaptation ensures that characters remain readable regardless of screen rotation, while the navigational images maintain their fixed geographical correspondence, thus resolving the contradiction between readability and spatial relationship preservation.
2Ease of operation
If the display orientation of characters is changed according to screen orientation, then character readability is improved, but the complexity of the display system increases
Solution Approach 1:
Different display elements are assigned different quality characteristics: characters are made dynamically adaptable to screen orientation for readability, while navigational images maintain fixed orientation for spatial accuracy. This local differentiation of display properties allows the system to improve character readability without requiring complete reorientation of all display elements, thereby limiting the increase in system complexity.
Data Source
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AI summary
A navigational information display device (1) is provided, which may include a navigational information acquisition part (21) configured to acquire first navigational information associated with a geographical position, a display part (22) configured to display a navigational image indicated using a geometrical figure related to the first information, and further display at least any of characters comprised of a first navigational information character indicative of the first information, a second navigational information character indicative of a second navigational information, and a device operation character related to operation of the display device (1), an input part (24) into which an instruction signal to instruct a change in a display orientation of the screen is inputted, and an arithmetic logical unit (26) configured to change a display orientation of the character while maintaining a display orientation of the navigational image when the instruction signal is inputted into the input part (24).