Optical Remote Controller Using Light Source Tracking
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Solution Overview
Problem
Conventional remote control devices for information technology devices, such as wireless mice, restrict user mobility and require a fixed platform for operation, limiting interaction with audiences during presentations or other mobile situations.
Innovation Solution
A system that uses a remote controller with a light source, an image sensor, and a processor to capture and analyze the movement of the light source within a field of view, generating a control signal to control an information technology device, allowing users to move freely while interacting with the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wireless mouse is used to control a computer workstation, then the user can control the device remotely, but the user must remain at a fixed platform which restricts freedom of movement and interaction with the audience
Solution Approach 1:
The patent replaces the mechanical tracking system of a wireless mouse with an optical tracking system. The remote controller uses a light source (e.g., LED) that emits light detectable by an image sensor, substituting mechanical movement detection with optical field analysis. This allows the user to move freely within the camera's field of view while maintaining control capability.
Solution Approach 2:
The patent introduces an image sensor (camera) as an intermediary between the user's physical movements and the control signals. The camera captures the position and movement of the light source in the visual field, converting physical space information into control data. This intermediary enables the user to control the device from any position within the camera's view without direct mechanical connection.
2Adaptability or versatility
If a conventional remote control system is used, then the user can control the information technology device, but the system requires a predefined projection surface and limited field of view
Solution Approach 1:
The patent makes the control system universal by using a camera that can detect the light source from any position within its field of view, eliminating the need for specific projection surfaces or predetermined control zones. The system adapts to different user positions and environmental configurations automatically, providing multi-functional control capability.
Solution Approach 2:
The system automatically tracks and identifies the light source position without requiring manual configuration or calibration. The image sensor continuously captures the visual field and the processor automatically determines the light source position and generates control signals, making the system self-adjusting and eliminating complex setup requirements.
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 users to control information technology devices without being tethered to a fixed platform, enhancing mobility and flexibility, as demonstrated by the ability to control cursor positions and other device functions while moving within a wide field of view.
Implementation Method 1
capturing, using an image sensor, a current control image of a light source of a remote controller positioned within a field of view of the image sensor
Data Source
AI summary
A method for generating a control signal to control an information technology device includes the following steps: (1) capturing, using an image sensor, a current control image of a light source of a remote controller positioned within a field of view of the image sensor; (2) identifying, within the current control image, a current location of light emitted from the light source; (3) determining movement between (a) the current location of the light emitted from the light source and (b) a previous location of the light emitted from the light source determined from a previously captured image; (4) generating a movement control signal based upon the movement; and (5) sending the movement control signal to the information technology device. The method is executed, for example, by a movement control module of an information technology device input system.