Projector Control Device for Keystone Correction Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing projection systems face challenges in accurately performing fine adjustments for keystone correction due to discrepancies between the movement of operation points on a terminal and the projection plane, and difficulties in aligning the correction direction when the projector is tilted.
Innovation Solution
A control device that communicates with a projector to enable precise geometric correction by displaying patterns on a touch panel, allowing users to select and move correction points on the terminal, which are then accurately translated to the projector for shape correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If keystone correction is performed by touching points on a touch pad in the projector, then the correction function can be operated, but when the projector is tilted, the movement direction of the correction target point on the touch pad deviates from the movement direction on the projection plane, making fine adjustment difficult
Solution Approach 1:
A direction indication mark is displayed on the projection plane to serve as an intermediary guide between the touch pad operations and the actual correction effect. The mark shows the relationship between the correction target point and the projection plane, enabling users to understand the actual correction direction and adjust their touch pad operations accordingly, thus resolving the directional deviation problem
Solution Approach 2:
The system provides visual feedback by displaying the direction indication mark on the projection plane that reflects the current state of correction. This feedback loop allows users to see the effect of their touch pad operations in real-time and make precise adjustments to achieve accurate correction, solving the fine adjustment difficulty
2Ease of operation
If the operation point on the projection plane is moved to a desired position, then correction can be achieved, but the amount of movement on the projection plane is larger than the amount of movement on the operation terminal, making fine adjustment difficult
Solution Approach 1:
The direction indication mark acts as a visual intermediary that helps users understand the mapping relationship between small movements on the touch pad and the corresponding corrections on the projection plane. By showing the relationship between the correction target point and projection plane coordinates, it enables precise control despite the magnification effect
Solution Approach 2:
The system displays the direction indication mark with extended lines that show the full range of correction possible, allowing users to make small, precise adjustments by referencing the indicated direction and magnitude, rather than requiring large movements
Data Source
AI summary
A control device for controlling a shape of a projection image projected by a projector. The control device communicates with the projector. A correction target point of the projection image is selected, and an image including an image indicative of the selected correction target point and a first pattern associated with the correction target point is displayed on a display section. A user's operation for moving the target point of the projection image is received. According to selection of the target point of the projection image, a first instruction for projecting a second pattern corresponding to the first pattern is transmitted to the projector, and a second instruction for moving the target point of the projection image according to the received user's operation is transmitted to the projector.