Multi-Point Interactive Display System Using Wavelength-Differentiated Infrared Remote Controls
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Solution Overview
Problem
Conventional input devices, such as laser pens, are inadequate for multi-point interactive operations in display systems, as they cannot accurately determine position coordinates for interactive commands and only support single-point interactions.
Innovation Solution
An interactive display system utilizing multiple remote control units with infrared emission modules and a monitoring module assembly, which captures and processes infrared light spots with different wavelengths to enable simultaneous multi-touch operations, allowing multiple remote control units to interact within a single display image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional input devices like laser pens are used, then the system structure remains simple, but multi-point interactive operations cannot be achieved and position coordinate determination is insufficient
Solution Approach 1:
The system segments the interaction capability by using multiple independent remote control units, each capable of independent operation. Each remote control unit includes its own infrared emission module, allowing multiple simultaneous interaction points on the display screen without requiring a complex integrated input device
Solution Approach 2:
The remote control units serve multiple functions: they emit infrared light for position detection, enable multi-point interaction simultaneously, and work with both projector and flat panel display types. The system universally supports various interaction modes including pointing, selecting, and multi-user collaboration
2Productivity
If multiple remote control units operate simultaneously, then multi-point interactive operations are enabled, but interference between different remote control units may occur
Solution Approach 1:
Each remote control unit emits infrared light with a specific wavelength characteristic, and the monitoring module assembly distinguishes between different units by detecting these wavelength differences. This local quality differentiation allows simultaneous operation of multiple remote controls without interference, as each unit's signals can be independently identified and processed
Solution Approach 2:
The monitoring module assembly continuously monitors infrared light spots from multiple remote control units and provides real-time position information to the main control unit. The system processes feedback from each remote control unit independently, enabling accurate tracking of multiple interaction points simultaneously while preventing signal confusion
3Adaptability or versatility
If a single laser pen is used for indication, then the device complexity is low, but multi-point interactive operations cannot be achieved
Solution Approach 1:
Each remote control unit is self-contained with its own infrared emission module and operates independently without requiring coordination with other remote units. The monitoring module assembly automatically detects and processes signals from multiple remote control units simultaneously, eliminating the need for complex coordination mechanisms
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 simultaneous multi-point interactive operations, enhancing human-computer interaction experience and operability by accurately determining and processing position information of multiple infrared light spots, preventing maloperations and improving accuracy.
Implementation Method 1
an infrared emission module assembly, which infrared emission module assembly is used to emit two infrared lights with different wavelengths to the display image for generating an infrared light spot thereon
Implementation Method 2
a monitoring lens for capturing the infrared light spot within the display image
Implementation Method 3
a first light splitting element arranged behind the monitoring lens, The first light splitting element is used for separating a first infrared light and a second infrared light having different wavelengths
Implementation Method 4
The first infrared light and the second infrared light having different wavelengths are respectively incident onto the first infrared monitoring element and the second infrared monitoring element
Data Source
AI summary
Disclosed is an interactive display system, comprising a main control unit for processing information, a display unit for generating a display image, one or more remote control units, and a monitoring module assembly; the main control unit has a communication connection with the display unit and the monitoring module assembly; each remote control unit comprises an infrared emission module assembly used to emit infrared light of two different wavelengths to the display image to generate an infrared light spot; the monitoring module assembly comprises a monitoring lens for capturing the infrared light spot within the display image, a first light splitting element, and a first and a second infrared monitoring element with respect to the different wavelength from the remote control. This disclosure provides multiple-point interaction on a single display image. User can easily interact with the display image just like the touch-panel which helps enhance interactive experience.