Projector Icon Visibility via Hand Approach Detection
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Solution Overview
Problem
In existing projection devices, operation icons are sometimes shaded by the hand during operation, making them difficult to see and use effectively.
Innovation Solution
A projector that includes a projection unit, a detection unit to sense the direction of a hand or its shadow, an icon memory unit to store icon data, and a decision unit to adjust icon size, gaps, and positions based on the detected direction, ensuring icons are easily visible and operable even when shaded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If operation icons are projected on the projection surface, then the user can perform operations, but the hand may shade the icons making them difficult to see
Solution Approach 1:
The patent applies dynamics by making the icon display parameters (size, gaps, positions) adjustable and adaptive. The decision unit dynamically modifies these parameters based on the detected direction of approach of the indication member, allowing the system to adapt to different user positions and hand orientations, thereby maintaining icon visibility and operability despite hand shading.
Solution Approach 2:
The patent applies local quality by differentiating the display characteristics of icons based on their spatial relationships with the hand. The decision unit adjusts display parameters locally for icons that may be shaded by the hand, while maintaining standard display for other icons, ensuring optimal visibility and operability in different regions of the projection surface.
2Illumination intensity
If the icon size is increased to improve visibility, then the icon becomes easier to see, but the display gaps between icons decrease making operation difficult
Solution Approach 1:
The patent applies dynamics by making the icon display parameters (size, gaps, positions) adjustable and adaptive. The decision unit dynamically modifies these parameters based on the detected direction of approach of the indication member, allowing the system to adapt to different user positions and hand orientations, thereby maintaining icon visibility and operability despite hand shading.
Solution Approach 2:
The patent applies parameter changes by modifying the display parameters of icons (size, gaps, positions) based on the detected direction of approach of the indication member. The decision unit changes these parameters to optimize both visibility and operability, ensuring that icons are easily seen and operated regardless of hand position or orientation.
3Illumination intensity
If the display positions of icons are adjusted to avoid shading, then the icons become easier to see, but the operation flow becomes more complex
Solution Approach 1:
The patent applies self-service by enabling the system to automatically adjust icon display parameters based on the detected direction of approach of the indication member. The decision unit autonomously determines optimal display positions, sizes, and gaps without requiring manual intervention or complex user input, thereby maintaining simplicity while improving visibility and operability.
Solution Approach 2:
The patent applies feedback by using the detection unit to sense the direction of approach of the indication member and feeding this information back to the decision unit. The decision unit then adjusts icon display parameters based on this feedback, creating a closed-loop system that automatically optimizes visibility and operability based on real-time user position and hand orientation.
Data Source
AI summary
A projector is provided with a projection unit that projects onto a projection surface a projected image that is based on image data; a detection unit that detects the direction of approach of an indication member or of the shadow of the indication member that has approached a detection region which includes the projected image; an icon memory unit that stores the image data of a plurality of icons; a decision unit that decides at least one of the display sizes of the icons, the display gaps between the icons, and the display positions of the icons, on the basis of the projection direction of the projected image and the direction of approach detected by the detection unit; and a projection control unit that projects the icons onto the display positions decided by the decision unit at the display sizes and display gaps decided by the decision unit.