Projection Device with Distance-Based Screen Segmentation
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Solution Overview
Problem
Current image projection devices lack the ability to selectively project user-desired information while preventing personal information from being exposed to others, and they inefficiently utilize larger screens by projecting the same information on all screens.
Innovation Solution
An image information projection device with a sensing unit and controller that distinguishes screens based on separation distances and display areas, allowing different image information to be projected on each screen, including user-selected content on one screen and related content on another, while recognizing user gestures and object positions to adjust projections dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the projection device projects all image information onto a single large screen, then the screen utilization is improved, but personal information security deteriorates as all content becomes visible to all users
Solution Approach 1:
The invention divides the single large screen into multiple virtual display regions or projection zones, allowing different image information to be projected simultaneously on the same physical screen. This segmentation enables selective visibility where users can only access content designated for their specific zone, thus maintaining screen utilization efficiency while preventing unauthorized access to personal information through spatial separation of content areas.
2Device complexity
If the projection device projects the same image information on all screens, then device complexity is reduced, but information delivery efficiency deteriorates as content cannot be tailored to different users or purposes
Solution Approach 1:
The invention implements local quality by allowing different regions or zones on the projection screen to display different image information tailored to specific users or purposes. The system assigns different content, resolution levels, or access permissions to different spatial locations on the screen, enabling customized information delivery without requiring multiple physical projection devices, thus maintaining relatively simple device architecture while significantly improving information delivery efficiency.
3Ease of operation
If the projection device allows multiple users to view the same screen simultaneously, then user accessibility is improved, but information security deteriorates as personal content becomes visible to unauthorized users
Solution Approach 1:
The invention adds a spatial dimension to information access control by dividing the two-dimensional screen into multiple accessible zones. Each user can access content in their designated zone while remaining physically present in the same viewing space as other users. This dimensional approach to access control maintains ease of operation and user accessibility while ensuring information security through spatial boundaries that prevent unauthorized viewing of content in other zones.
Data Source
AI summary
The present invention relates to a device for projecting image information and a control method for the device, the device comprising: a main body; a projection unit for projecting image information onto at least two screens having different separation distances from the main body; a detection unit for detecting separation distances between each of the at least two screens and the main body; and a control unit for controlling the projection unit such that different pieces of image information are projected onto the screens on the basis of the separation distances between the main body and the screens, wherein the control unit projects image information corresponding to content selected by a user onto a first screen among the screens and projects image information related to the content onto a second screen.