Projection Region Control for Consistent Multi-Projector Overlap
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Solution Overview
Problem
Existing projection systems struggle with accurately adjusting the relative projection positions among multiple projection apparatuses, particularly when enlarging or reducing projection regions, leading to inconsistencies in overlapping areas.
Innovation Solution
A projection apparatus and system that includes a processor capable of calculating and adjusting the direction and amount of shifting for projection regions based on enlarging or reducing instructions, maintaining the ratio of overlapping areas, and communicating these adjustments through a daisy chain connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If projection regions are enlarged or reduced in multi-projection systems, then the projection size is adjusted, but the relative projection positions among multiple apparatuses become inconsistent
Solution Approach 1:
The system uses feedback by having each projection apparatus measure its own projection region and communicate this information to other apparatuses through the transmission path. Based on this feedback, each apparatus calculates and executes appropriate shifting to maintain consistent relative positions during enlargement or reduction operations.
Solution Approach 2:
The projection system is divided into multiple independent projection apparatuses, each capable of independently measuring its projection region and calculating its own shifting amount. This segmentation allows each apparatus to autonomously maintain position accuracy while adapting to size changes.
2Area of stationary object
If the projection region is enlarged or reduced, then the projection area changes, but the overlapping area ratio becomes inconsistent
Solution Approach 1:
Each projection apparatus measures its projection region and communicates this information to other apparatuses. Based on this feedback, the system calculates the overlapping area ratio and determines the appropriate shifting amount to maintain consistency, ensuring stable composition during area changes.
3Ease of operation
If manual adjustment of projection positions is performed, then flexibility is maintained, but adjustment accuracy and efficiency decrease
Solution Approach 1:
Each projection apparatus autonomously measures its own projection region, calculates the required shifting amount based on received information from other apparatuses, and executes the shifting automatically. This self-service capability eliminates manual adjustment while maintaining high precision and flexibility.
Solution Approach 2:
The patent replaces manual mechanical adjustment with an automated information processing system. Each apparatus uses communication and calculation to determine position corrections, substituting human operation with automated control based on measured data.
Data Source
AI summary
A first projection apparatus (1(2)0A) including a projection portion (124), a control device (121), and a first communication portion (122) is capable of forming a transmission path with at least one another second projection apparatus (1(2)0B). The projection portion (124) projects a partial image of a projection image to a first projection region (7a). In a case where the first communication portion (122) receives an enlarging or reducing instruction of the first projection region (7a) including an enlarging or reducing ratio, the control device (121) calculates at least any of a direction or an amount of shifting of the first projection region (7a) based on the enlarging or reducing ratio and on positional information related to a position of the partial image in the projection image.