Light Beam Coordinate Calculation with Dynamic Reference Adjustment
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Solution Overview
Problem
Display apparatuses face challenges in accurately calculating the coordinates of a light beam on a screen due to variations in installation environments, leading to difficulties in properly displaying images corresponding to the light beam trace.
Innovation Solution
A display apparatus comprising a camera, video processor, and controller that senses and processes images, adjusts the reference position based on changes in display characteristics, and resets the reference position using sensors like gyroscope, acceleration, and geomagnetic sensors to ensure accurate coordinate calculation and image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed reference position is used for calculating light beam coordinates, then the calculation method is simple, but the coordinate accuracy deteriorates when display characteristics change due to installation environment variations
Solution Approach 1:
The reference position is changed from a fixed static point to a dynamic point that automatically adjusts based on detected display characteristic changes. The controller continuously monitors display characteristics and updates the reference position coordinates accordingly, ensuring accuracy is maintained even when installation environment variations occur.
Solution Approach 2:
The system implements a feedback mechanism where the controller detects changes in display characteristics (such as position, orientation, or environmental conditions) and uses this information to automatically adjust the reference position. This closed-loop approach ensures that the coordinate calculation remains accurate despite variations in installation environment.
2Measurement precision
If the reference position is dynamically adjusted based on display characteristic changes, then the coordinate accuracy is improved, but the system complexity increases
Solution Approach 1:
The system performs self-adjustment by automatically detecting display characteristic changes and updating the reference position without requiring external intervention or complex manual calibration procedures. The controller autonomously monitors and adapts the reference position based on real-time display characteristics.
Solution Approach 2:
The system changes the parameters of the reference position (coordinates) dynamically based on detected display characteristic variations. By adjusting these parameters automatically, the system maintains coordinate accuracy without adding significant structural complexity.
3Adaptability or versatility
If sensors are added to detect display apparatus position changes, then the adaptability to environment changes is improved, but the device complexity and cost increase
Solution Approach 1:
The system uses multi-functional sensors that can detect various display characteristic changes (position, orientation, environmental conditions) with a single sensing mechanism. This approach improves adaptability to different installation environments while minimizing the number of separate sensing components required.
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
Enables accurate calculation and display of light beam coordinates even with changes in the display environment, ensuring proper image representation by dynamically adjusting the reference position in response to variations in display characteristics.
Implementation Method 1
a camera which senses a light beam focused on a screen
Implementation Method 2
The sensor may include at least one of a gyroscope sensor, an acceleration sensor and a geomagnetic sensor
Implementation Method 3
The sensor may include at least one of a gyroscope sensor, an acceleration sensor and a geomagnetic sensor
Implementation Method 4
The sensor may include at least one of a gyroscope sensor, an acceleration sensor and a geomagnetic sensor
Data Source
AI summary
A display apparatus is disclosed which includes: a camera which senses a light beam focused on a screen; a video processor which processes at least one of a first image including a reference position for calculating coordinates of the light beam and a second image corresponding to the coordinates of the light beam to be displayed on the screen; and a controller which calculates the coordinates of the light beam on the basis of the reference position changed in accordance with change in a display characteristic of the first image, and transmits the calculated coordinates to the video processor so that the second image corresponding to the calculated coordinates can be displayed on the screen.