Vehicle Camera System with Dynamic Frozen Video Indicator
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Solution Overview
Problem
Vehicle rear view cameras may display a frozen image without warning, making it difficult for drivers to distinguish between a frozen image and a live video of a static environment, potentially leading to unnoticed obstacles during reverse maneuvers.
Innovation Solution
A method and system that overlays a dynamic indicator onto the camera video, which becomes static when the video freezes, ensuring the driver is notified of a frozen feed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If no indicator is displayed on the camera video, then the display remains simple and uncluttered, but the driver cannot distinguish between a frozen image and a live video of a static environment
Solution Approach 1:
The indicator changes its visual state (from dynamic to static) to communicate video status to the driver. This uses visual property changes rather than adding complex indicators or alerts, resolving the contradiction between providing information and maintaining simplicity.
Solution Approach 2:
The camera video feed itself serves as the indicator by changing its temporal characteristics. When frozen, the video stops updating, and this cessation of updates becomes the indicator of frozen status, eliminating the need for separate indicator systems.
2Reliability
If a dynamic indicator is overlaid on the camera video, then the driver can easily distinguish live video from frozen image, but the display becomes more complex and potentially distracting
Solution Approach 1:
The video feed itself acts as an intermediary that carries dual information: the camera view and the live/frozen status. By modulating the video's temporal properties, the system communicates status without requiring separate indicator mechanisms.
Solution Approach 2:
The status indication function is merged with the video display function. The same video feed that shows the camera view also indicates its own status through its update behavior, combining multiple functions into a single system.
3Ease of operation
If the video freezes without notification, then the system maintains simple operation, but the driver may proceed with backup maneuver unaware of obstacles
Solution Approach 1:
The system provides immediate visual feedback about its own operational status. When the video freezes, the indicator changes to inform the driver of the frozen state, allowing the driver to adjust behavior accordingly and avoid safety hazards.
Solution Approach 2:
The dynamic indicator serves as a preliminary warning that prevents the harmful effect of undetected obstacles. By alerting the driver before a frozen video could lead to unsafe maneuvering, the system counteracts potential hazards in advance.
Data Source
AI summary
A vehicle display displays a camera video having an indicator. The indicator is static on the display while the camera video is frozen on the display thereby notifying a viewer that the camera video is frozen and the indicator is dynamic on the display while the camera video is live on the display.