Projection Image Edge Movement Control for Projector Operability
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Solution Overview
Problem
Existing projection display devices face operability issues when the projection image needs to be moved or expanded, as they stop at the outer edge of the modulable region, contradicting user operations.
Innovation Solution
A projection method and system that allow the projection image to move along the outer edge of the drawn image when it contacts the edge due to user operations, continuing to move or expand as long as the operation continues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the projection image is moved or expanded using conventional methods, then the projection image can be adjusted within the modulable region, but the projection image stops at the outer edge contrary to user operation, resulting in poor operability
Solution Approach 1:
The patent implements dynamic control of the projection image movement behavior. When the projection image contacts the outer edge of the drawn image, the system automatically switches from standard movement control to edge-along movement control. This dynamic adaptation allows the projection image to continue moving along the outer edge when the user continues the translation operation, eliminating the abrupt stoppage and improving operability without requiring complex manual intervention
Solution Approach 2:
The system continuously monitors the position of the projection image relative to the outer edge of the drawn image. When contact is detected, the system provides feedback by changing the movement behavior to follow the outer edge. This feedback mechanism ensures that the projection image responds intuitively to user operations while maintaining proper boundaries, resolving the contradiction between ease of operation and control complexity
2Reliability
If the projection image is constrained to stop at the outer edge of the modulable region, then the light modulation device boundaries are respected, but user operation is contradicted and operability deteriorates
Solution Approach 1:
The system dynamically adjusts its boundary enforcement behavior based on the contact state. When the projection image does not contact the outer edge, standard movement control applies. When contact occurs and the user continues the translation operation, the system switches to edge-along movement, allowing the projection image to follow the outer edge while still respecting the light modulation device boundaries. This dynamic approach maintains reliability while improving operability
Solution Approach 2:
The outer edge of the drawn image serves as an intermediary guide for the projection image movement. Instead of directly constraining the projection image to stop at the boundary, the system uses the outer edge as a mediator that guides the projection image along the boundary when contact occurs. This intermediary approach maintains boundary compliance while providing intuitive user operation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Improves user operability by allowing seamless movement and expansion of the projection image along the outer edge, eliminating the need for users to change translation directions and enhancing overall usability.
Implementation Method 1
a light modulation device that is configured to draw a drawn image and a projection image obtained by reducing the drawn image and that is configured to modulate light from a light source
Data Source
AI summary
A projection method including: projecting, by a main body including a light modulation device that is configured to draw a drawn image and a projection image obtained by reducing the drawn image, and that is configured to modulate light from a light source, the drawn image or the projection image on a projection surface; receiving a first operation for moving the projection image with respect to the projection surface or a second operation for expanding the projection image; and moving the projection image along an outer edge of the drawn image in accordance with the first operation or the second operation when the projection image makes contact with the outer edge by receiving the first operation or the second operation and when the first operation or the second operation continues.