Projector Passive Control Strip via IR Calibration Tags
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing information handling systems, such as projectors, require manual recalibration and direct interaction for control strip functionality, leading to inefficiencies and potential misinterpretation of user commands due to the need for precise alignment and communication with the projector.
Innovation Solution
A passive control strip system utilizing infrared (IR) calibration tags and icons, where the IR control module and controller associate specific IR wavelengths with commands and coordinates, allowing for automatic detection and execution of commands without direct communication with the projector, enabling user-friendly and precise control through IR-based image projection and detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual recalibration and direct interaction are required for control strip functionality, then the projector can be controlled, but the operation becomes inefficient and prone to misinterpretation of user commands
Solution Approach 1:
The control strip system performs automatic detection and calibration without requiring manual intervention. The IR camera automatically detects the control strip position and the projector automatically calibrates based on the detected coordinates, eliminating the need for manual recalibration and direct user interaction while improving both operational efficiency and command interpretation accuracy
Solution Approach 2:
The patent replaces manual mechanical calibration operations with an automated optical detection system. The IR camera captures images of the control strip and uses coordinate detection algorithms to automatically determine positioning, substituting the manual mechanical adjustment process with an automated optical-mechanical system that is both more efficient and more accurate
2Measurement precision
If precise alignment is required for control strip functionality, then the control commands can be accurately interpreted, but the system complexity and difficulty of detection increase
Solution Approach 1:
The control strip contains pre-positioned IR calibration tags at specific locations (corners and center) that serve as predetermined reference points. These tags are placed in advance during manufacturing with precise coordinates, allowing the system to automatically detect and align without complex real-time measurement procedures, thereby maintaining high precision while reducing detection difficulty
Solution Approach 2:
The IR calibration tags serve as intermediary elements between the control strip and the IR camera detection system. These tags reflect IR light and create distinct detectable signals that simplify the detection process, allowing the system to achieve precise alignment through simple tag detection rather than complex direct measurement of the control strip itself
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
The system allows for efficient and accurate control of projector functions without manual recalibration, enabling seamless execution of commands and reducing errors by using IR-based detection and calibration, thus enhancing user interaction and system reliability.
Implementation Method 1
An infrared (IR) camera of the projector detects IR calibration tags of the control strip within the IR curtain and determines locations of the IR calibration tags
Data Source
AI summary
A projector includes an infrared generator, an infrared camera, an infrared control module, and a controller. The infrared generator provides an infrared curtain on a screen that the projector projects an image. The infrared camera detects a selection of an icon on a control strip located within the infrared curtain. The infrared control module is in communication with the infrared generator and the infrared camera, and determines a coordinate position within the infrared curtain associated with the selection of the icon on the control strip. The controller is in communication with the infrared control module, and determines a command for the projector based on the coordinate position of the selection of the icon, and executes the command.