Wearable Device Using Depth Sensor and Skin Line Recognition for Gesture Input
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Solution Overview
Problem
Current input units, such as keyboards and mice, lack portability and convenience while maintaining precision for data input, necessitating a wearable device that can replace these traditional input methods.
Innovation Solution
A wearable device equipped with a depth sensor, finger recognition unit, image processor, and key determination unit to sense hand movements and generate input values, allowing for 3D data input without additional units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional input units (keyboard, mouse) are used, then input precision is maintained, but portability and convenience deteriorate
Solution Approach 1:
The patent replaces traditional mechanical input devices (keyboard, mouse) with an optical sensing system consisting of depth sensor, finger recognition unit, and image processor. This substitutes mechanical key presses and mouse movements with optical detection of hand gestures and finger positions, achieving both portability and input precision.
Solution Approach 2:
The system changes the parameter of input detection from mechanical contact (keyboard switches, mouse buttons) to optical parameters (depth information, skin line patterns, 3D coordinates). By detecting finger joint positions and skin line variations, the system maintains input precision while enabling portable wearables.
2Volume of moving object
If wearable device size is reduced for portability, then miniaturization is achieved, but sensing capability and input precision deteriorate
Solution Approach 1:
The patent combines multiple sensing functions into a single integrated wearable device. The depth sensor, finger recognition unit, and image processor are merged into one compact unit that can simultaneously capture depth information, detect skin lines, and process gesture recognition, achieving miniaturization without sacrificing sensing capability.
Solution Approach 2:
The system transitions from 2D image capture to 3D depth sensing by incorporating depth sensors that capture depth information. This dimensional change enables precise finger joint position detection and gesture recognition in three-dimensional space, maintaining sensing precision while allowing compact device design.
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 and portable data input, replacing traditional keyboards and mice, providing improved convenience and maintaining input precision.
Implementation Method 1
The depth sensor may include at least one of an infrared camera, a Time of Flight (ToF) camera, a laser transceiver and a stereo camera.
Data Source
AI summary
Disclosed is a wearable device. The wearable device includes a depth sensor configured to 3-dimensionally sense a user's hand and to generate 3D scan information, a finger recognition unit configured to sense skin lines of user's fingers and to generate pattern information, an image processor configured to generate a 3D model of the user's hand based on the 3D scan information and to add a pattern representing the skin lines of the user's fingers to the 3D model based on the pattern information, and a key determination unit configured to, when the finger recognition unit senses a user's key input motion, generate an input value matching the key input motion, and the finger recognition unit senses the key input motion by comparing the sensed skin lines of the user's fingers with the pattern added to the 3D model.