Multi-Projector Alignment via Guide and Reference Figures
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Solution Overview
Problem
Existing projection-type display systems require cumbersome user adjustments when projectors are positioned incorrectly, as they need to be manually aligned to project images onto predetermined areas, which is time-consuming and labor-intensive.
Innovation Solution
A projection image display system that includes multiple projectors and a control apparatus to automatically detect and adjust projector positions by displaying guide and reference figures on the projection plane, allowing users to easily align projectors for accurate image projection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple projectors are used to project images onto a projection plane, then the image coverage area is expanded, but the complexity of position adjustment increases
Solution Approach 1:
The patent introduces guide figures and reference figures as intermediary visual elements projected onto the projection plane. These figures serve as mediators between the control apparatus and the user, providing visual guidance for position adjustment without requiring complex mechanical alignment procedures. The guide figures indicate target positions while reference figures show actual projector positions, enabling intuitive alignment.
Solution Approach 2:
The system implements a feedback mechanism where the control apparatus detects the actual projection positions of multiple projectors and compares them with the assigned projection regions. Based on this comparison, the system dynamically generates and displays guide figures and reference figures to indicate misalignment conditions, creating a closed-loop feedback system that guides users through the adjustment process.
2Manufacturing precision
If manual position adjustment is required for each projector, then precise image projection can be achieved, but the time and labor required increase
Solution Approach 1:
The control apparatus performs preliminary detection of each projector's actual projection position and automatically determines the appropriate guide figures and reference figures before user adjustment begins. This preliminary action includes calculating the differences between assigned and actual positions, preparing visual guidance materials in advance, and displaying them on the projection plane to guide users through the adjustment process more efficiently.
3Reliability
If the projectable region does not contain the assigned projection region, then the projector position is incorrect, but the system lacks automatic correction capability
Solution Approach 1:
The system implements self-service functionality where the control apparatus automatically detects projector position deviations, determines the appropriate guidance figures, and displays them on the projection plane without requiring user intervention for detection or guidance generation. The system serves itself by autonomously identifying misalignment conditions and providing structured visual feedback to guide correction.
Data Source
AI summary
A projection image display system which forms an image on a projection plane with plural images includes a first projection-type display apparatus, a second projection-type display apparatus, a first-controller configured to control the first projection-type display apparatus to display a guide figure when a projectable region does not contain an assigned projection region for the first projection-type display apparatus, a second controller configured to control the second projection-type display apparatus to display a reference figure when a projectable region contains an assigned projection region for the second projection-type display apparatus. The guide figure is a figure to be referenced by a user for adjusting the position of the first projection-type display apparatus. The reference figure is a figure to be referenced by the user, as a norm for the position adjustment, in combination with the guide figure.