Vehicle Projection Screen Control for Automatic Viewing Angle Adjustment
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Solution Overview
Problem
Existing vehicle-mounted video and audio playback systems face limitations due to small screen sizes and fixed projection screens that require manual adjustment, leading to uncomfortable viewing angles and reduced user experience.
Innovation Solution
A control method and system that adjusts the position of a projection screen outside the vehicle based on facial data of users, integrating the screen into the rear trunk door and using a vehicle-mounted camera to determine optimal pose parameters for projection and audio playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed projection screen is used inside the vehicle, then the device complexity is reduced, but the viewing angle and user experience deteriorate
Solution Approach 1:
The projection screen is transformed from a fixed static structure to a dynamic adjustable one. The screen can be extended outward from the vehicle and adjusted to different angles and positions, allowing it to adapt to various viewing requirements while maintaining a relatively simple base structure when retracted.
Solution Approach 2:
The projection screen system is divided into multiple segments or sections that can be independently adjusted. This segmentation allows different parts of the screen to be positioned at optimal angles for multiple viewers simultaneously, improving ease of operation without requiring a completely complex monolithic structure.
2Device complexity
If manual adjustment of the projection screen is required, then the device complexity is reduced, but the productivity and user experience deteriorate
Solution Approach 1:
The system incorporates sensors and control mechanisms that automatically detect user position and preferences, then autonomously adjust the projection screen to optimal settings. This self-service capability eliminates the need for manual intervention while keeping the overall device complexity manageable through automated routines.
Solution Approach 2:
The system uses feedback from sensors, cameras, or user input to continuously monitor and automatically adjust the projection screen position and angle. This closed-loop control enables rapid screen setup without manual intervention, improving productivity while maintaining reasonable system complexity through algorithmic control.
3Area of stationary object
If the projection screen is integrated into the rear trunk door, then the area available for projection is increased, but the device complexity increases
Solution Approach 1:
The projection screen is merged with the rear trunk door structure, utilizing the door's existing framework and movement mechanisms. This integration provides a large projection area while leveraging the trunk door's built-in mechanical systems, thereby reducing the need for separate complex support structures.
Solution Approach 2:
The rear trunk door serves dual functions: its primary function as a vehicle access point and its secondary function as the mounting and support structure for the projection screen. This multi-functionality increases the projection area without requiring dedicated complex infrastructure solely for projection purposes.
Data Source
AI summary
A control method for vehicle-mounted video and audio playback includes in response to activation of an vehicle-mounted video and audio mode, obtaining facial data of at least one user outside a vehicle, determining a pose parameter of a projection screen according to the facial data of the at least one user, adjusting a pose of the projection screen based on the pose parameter, controlling an vehicle-mounted projection device to project video data of video and audio data onto the projection screen, and controlling an vehicle-mounted external speaker to synchronously broadcast audio data of the video and audio data. The projection screen is integrated into a rear trunk door of the vehicle, and the rear trunk door is open, and the projection screen is in an expanded state in the vehicle-mounted video and audio mode.