Projector System Height Detection Dynamic Image Adjustment
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Solution Overview
Problem
In interactive projector systems, users, especially shorter individuals, face difficulties in reaching the upper portion of the projection surface for input operations due to the fixed projection height, leading to inconvenient workarounds like using platforms.
Innovation Solution
A projector system that includes a position detecting unit, a drawing unit, a height detecting unit, and a display changing unit, which adjusts the projection image's shape and position based on the user's height, allowing for reduced image projection to enable input operations on the upper portion, and automatically restores the image to its original state when the user is not present.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the projection image is displayed at a fixed position and size, then the projection system is simple and stable, but short users cannot reach the upper portion of the projection surface for input operations
Solution Approach 1:
The projection image position and size are dynamically adjusted based on the detected user height. The display changing unit modifies the projection parameters in real-time according to the user's physical characteristics, transforming a static system into an adaptive one that automatically accommodates different user heights without requiring manual intervention or complex mechanical adjustments.
Solution Approach 2:
The system automatically detects user height and adjusts the projection image accordingly without requiring user intervention. The height detecting unit and display changing unit work together to self-adjust the system configuration, eliminating the need for users to manually adjust settings or use external platforms to reach the projection surface.
2Ease of operation
If the projection image size is reduced to accommodate short users, then accessibility is improved, but the image may become too small for optimal viewing and interaction
Solution Approach 1:
The system changes the projection parameters (position and size) based on the detected user height. By adjusting these parameters dynamically, the system optimizes the balance between accessibility and image size, ensuring that the projection image is appropriately sized and positioned for each user without being excessively small or requiring manual platform use.
3Ease of operation
If the projection image is automatically adjusted based on user height, then usability is improved, but additional detection and control components are required
Solution Approach 1:
The patent replaces complex mechanical adjustment mechanisms with optical/electronic detection and control systems. Instead of using mechanical platforms or manual adjustment devices, the system uses a height detecting unit (optical sensor) and a display changing unit (electronic control) to automatically adapt the projection image, simplifying the overall system architecture while improving usability.
Data Source
AI summary
A projector system includes: a position detecting unit that detects a pointed position of a pointer on a projection surface; a drawing unit that performs drawing on the projection surface according to the pointed position detected by the position detecting unit; a height detecting unit that detects a height of a user of a projector; and a display changing unit that changes, according to the user's height detected by the height detecting unit, at least one of a shape of the image projected onto the projection surface and a display position of the image on the projection surface.