Optical Pointing System Wavelength Segmentation
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Solution Overview
Problem
Traditional remote controllers for intelligent home applications face challenges in accurately determining the relative position and angle of electronic devices due to background interferences, which affect cursor manipulation on screens.
Innovation Solution
An optical pointing system employing multiple light sources with distinct wavelengths and an image receiver to detect and analyze optical signals, allowing for the accurate determination of the control device's position relative to the object, while adjusting lighting periods to minimize interference from background signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional remote controllers use simple function-specific buttons, then the device complexity is low, but the adaptability for intelligent home applications is insufficient
Solution Approach 1:
The remote controller integrates multiple functions including directive operations for cursor manipulation, web browsing, web search, and input operations through a single device. The optical pointing system enables the remote to perform various control functions adaptably across different electronic devices in intelligent home applications.
Solution Approach 2:
The patent replaces traditional mechanical buttons with an optical pointing system that uses light sources and image receivers to detect user interactions. This substitution enables more versatile control mechanisms while maintaining ease of operation.
2Measurement precision
If the optical pointing system uses multiple light sources with distinct wavelengths, then the measurement precision for relative position is improved, but the device complexity increases
Solution Approach 1:
The optical pointing system divides the positioning function into multiple segments by using multiple light sources at different wavelengths and corresponding image receivers. Each light source-image receiver pair contributes to the overall positioning measurement, enabling precise relative position determination through segmented detection.
Solution Approach 2:
The system changes the wavelength parameter of light sources to distinguish between different light sources. By using distinct wavelengths (e.g., red and infrared), the image receivers can accurately identify and differentiate which light source emitted which signal, improving measurement precision for relative position calculation.
3Measurement precision
If the system adjusts lighting periods to minimize background interference, then the measurement precision is improved, but the duration of action increases
Solution Approach 1:
The light sources operate in a periodic manner with adjusted lighting periods rather than continuously. By timing the illumination periods strategically, the system minimizes background interference while maintaining measurement precision. The periodic activation allows the system to distinguish between foreground and background signals more effectively.
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 precise control device positioning and angle determination, reducing background interference and ensuring accurate cursor manipulation regardless of user handling, thereby enhancing interactive capabilities in intelligent home applications.
Implementation Method 1
a first light source disposed on a first location of an object and configured to provide a first light whose wavelength is within a first predetermined range; a second light source disposed on a second location of the object and configured to provide a second light whose wavelength is within a second predetermined range
Implementation Method 2
an image receiver configured to detect optical signals of the first light source and the second light source for generating a corresponding first image and a corresponding second image
Data Source
AI summary
An optical pointing system includes a plurality of light sources, an image receiver, and an analyzing unit. The plurality of light sources are disposed on multiple locations of an object and configured to provide light having distinct wavelengths. The image receiver is configured to detect optical signals of the plurality of light sources, thereby generating a plurality of corresponding images. The analyzing unit is configured to calculate a relative position or angle of the image receiver with respect to the object according to the images.