Optical Remote Control Light Source Dynamic Adjustment
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Solution Overview
Problem
Conventional optical remote control systems face limitations in operating distance due to the fixed number of light sources, leading to either overexposure or undersized light spots, making it difficult to recognize the light spot within a wider range, and inefficient power usage.
Innovation Solution
An optical remote control system that dynamically adjusts the number and positions of activated lighting units based on the light spot's area in the image, allowing for a wider recognizable range and optimized power usage by reducing the number of active units when the spot is large and increasing when it's small.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the distance between the image sensor and the light source is reduced, then the light spot size increases and becomes more recognizable, but the light spot becomes overexposed and hard to recognize
Solution Approach 1:
The patent applies dynamics by making the light source's illumination intensity adjustable rather than fixed. The controller dynamically changes the number of lighting units activated based on the detected distance between the image sensor and light source, allowing the system to adapt to varying distances and maintain optimal light spot recognition across a wider operating range.
Solution Approach 2:
The patent changes the parameter of illumination intensity by varying the number of lighting units activated. When the distance is short, fewer lighting units are activated to reduce brightness and prevent overexposure. When the distance is long, more lighting units are activated to increase brightness and maintain light spot visibility.
2Length of moving object
If the distance between the image sensor and the light source is increased, then the light spot size decreases and becomes smaller, but the light spot becomes too small and hard to be recognized
Solution Approach 1:
The system dynamically adjusts the number of activated lighting units based on real-time distance detection. When the distance increases, the controller activates more lighting units to compensate for the reduced light spot size, ensuring the light spot remains recognizable across an extended operating distance range.
Solution Approach 2:
The illumination intensity parameter is adjusted by changing the number of active lighting units. This parameter change compensates for the distance-induced reduction in light spot size, maintaining recognition accuracy over a wider operating distance range.
3Length of moving object
If all lighting units are activated to enlarge the light spot for longer operating distance, then the maximum operating distance increases, but the minimum operating distance is adversely affected and power consumption increases
Solution Approach 1:
The system dynamically adjusts the number of activated lighting units based on the actual operating distance. Instead of keeping all lighting units activated continuously, the controller activates only the necessary number of units based on real-time feedback, reducing power consumption while maintaining the ability to operate at both short and long distances.
Solution Approach 2:
The system changes the illumination intensity parameter by varying the number of active lighting units. This allows the system to use lower intensity (fewer units activated) at short distances to save power, and higher intensity (more units activated) at long distances to maintain operational effectiveness.
4Use of energy by moving object
If the number of activated lighting units is reduced to save power, then the power consumption decreases, but the light spot size decreases and the operating distance is limited
Solution Approach 1:
The system dynamically adjusts the number of activated lighting units based on real-time distance detection. When the distance is short, fewer units are activated to save power. When the distance increases, the system activates more units to extend the operating distance, optimizing the balance between power consumption and operational range.
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 a wider operating distance for the optical remote control system while ensuring the light spot remains recognizable, effectively saving power by adjusting the number of active lighting units according to the pixel coverage, thereby improving usability and reducing power consumption.
Implementation Method 1
an image sensor receiving an image including the light beam
Data Source
AI summary
The present invention discloses an optical remote control system, and a method for controlling a light source of the system. The system includes: a light source including a plurality of lighting units, the light source generating at least one light beam; an image sensor receiving an image including the light beam; and a processor determining a number or positions of the lighting units which are activated according to an area of the light beam in the image.