Double-Sided Display Device with Dual Projectors and Viewer Detection
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Solution Overview
Problem
Current display technologies fail to effectively connect people across different surfaces with efficient image projection and detection, leading to suboptimal communication and interest-based information sharing.
Innovation Solution
A display device equipped with a double-sided screen, two ultra-short focus projectors, and a sensor system that detects viewers to dynamically switch between projecting non-inverted images on both sides, adjusting image display based on viewer presence and interest levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single projector is used to project images on a double-sided screen, then device complexity is reduced, but image quality deteriorates because one side appears inverted to viewers
Solution Approach 1:
The system divides the projection function into two separate projectors: one projector projects images to the first surface of the double-sided screen, and another projector projects images to the second surface. This segmentation allows each projector to optimize image orientation for its specific viewing side, eliminating the inverted image problem that occurs with single-projector configurations.
2Adaptability or versatility
If image projection is switched between two surfaces, then adaptability to different viewing scenarios is improved, but response time increases due to detection and switching delays
Solution Approach 1:
The system pre-positions two projectors on opposite sides of the double-sided screen, each configured to project non-inverted images to their respective surfaces. The controller is pre-programmed with detection algorithms that monitor viewer positions in real-time. When a viewer approaches a surface, the system can immediately switch projection to that surface without detection or switching delays, as the infrastructure is already in place and the control logic is pre-established.
3Loss of information
If a detector system is added to dynamically switch projectors, then information sharing effectiveness is improved, but device complexity increases
Solution Approach 1:
The controller serves multiple functions: it manages the detection system that monitors viewer positions, processes the detection signals to determine which surface has a viewer, and executes the switching logic to activate the appropriate projector. This multi-functionality consolidates what could be separate complex systems into a single integrated control unit, improving communication effectiveness while managing device complexity through functional integration.
Data Source
AI summary
A display device includes a screen, first and second projectors, a detector, and a controller. The screen has first and second surfaces. The first projector projects a first horizontally non-inverted image as viewed from the first surface. The second projector projects a second horizontally non-inverted image as viewed from the second surface. The detector detects a person at least viewing one of the first and second surfaces. The controller controls switching of an operation between the first and second projectors in accordance with a detection result of the detector.