Ambient Light Sensors for Touchless Gesture Recognition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional user interfaces, such as touchscreens and touchpads, can be impractical in certain environments (e.g., dirty or extreme conditions) and may not accommodate users' familiar gestures, leading to usability issues.
Innovation Solution
A device equipped with three or more ambient light sensors arranged in a non-linear pattern to detect touch-less gestures by measuring changes in ambient light intensity, allowing for gesture recognition without physical contact, and combining these with touchscreen inputs to provide a hybrid user interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touchscreen interfaces are used, then user interaction is enabled, but the interface becomes impractical in dirty or extreme environments
Solution Approach 1:
The patent introduces ambient light sensors as an intermediary detection mechanism between the user and the device interface. Instead of requiring direct touchscreen contact, the system detects gestures through changes in ambient light patterns caused by hand movements, enabling interaction in environments where direct contact is impractical
Solution Approach 2:
The patent replaces the mechanical touchscreen contact system with an optical detection system using ambient light sensors. This substitution eliminates the need for physical contact with the screen surface, allowing gesture recognition in dirty, gloved, or extreme conditions where mechanical interaction would fail
2Adaptability or versatility
If multiple ambient light sensors are added for touch-less gesture detection, then gesture recognition capability is improved, but device complexity increases
Solution Approach 1:
The patent makes the ambient light sensors multi-functional by using them both for traditional ambient light detection (display brightness adjustment) and for touch-less gesture detection. This universal usage of existing sensors adds gesture recognition capability without requiring completely separate hardware systems
Solution Approach 2:
The patent merges the gesture detection function with the existing ambient light sensing system. By combining these functions into a single sensor array, the system achieves enhanced gesture recognition capability while avoiding the complexity of adding entirely separate detection hardware
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 intuitive and effective gesture recognition in various environments, accommodating users' familiar interactions while maintaining cleanliness and usability, even when hands are gloved or in dirty conditions.
Implementation Method 1
detect touch-less gestures by measuring changes in ambient light intensity
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A device operable using touch-less and touchscreen gestures and a method and system to operate the device are described. The device includes two or more ambient light sensors arranged at respective surface locations of the device and sensing light intensity at the respective surface locations. The device also includes a processor coupled to the two or more ambient light sensors to identify a touch-less gesture based on the light intensity sensed by the two or more ambient light sensors, receive a touchscreen gesture, and operate the device based on the touch-less gesture and the touchscreen gesture.