Radar-Camera Gesture Input Interface for Portable Cursor Control
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Solution Overview
Problem
Existing input control interfaces for portable electronic devices, such as mice, touchpads, and visual virtual mice, face challenges related to portability, usability, and physical strain, and require additional learning for operation.
Innovation Solution
An input interface system combining a radar unit and a camera unit to identify a target point using radar point clouds and captured images, calculating cursor positions, and performing specified functions based on gestures, enhancing accuracy and reducing strain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional mice are used for portable electronic devices, then input control functionality is provided, but portability is reduced due to additional peripherals
Solution Approach 1:
The patent combines the radar unit and camera unit into an integrated input control system that is built into the portable electronic device itself, eliminating the need for external mice or touchpads. The radar unit detects hand gestures and the camera unit captures images for verification, merging multiple sensing functions into a unified system that maintains portability while providing comprehensive input control.
Solution Approach 2:
The patent replaces mechanical input devices (mice, touchpads) with a radar-based gesture recognition system. The radar unit uses electromagnetic waves to detect hand movements and gestures in three-dimensional space, substituting physical contact-based input with contactless gesture-based input, thereby improving portability while maintaining input functionality.
2Ease of operation
If touchpads or track points are used, then input control is provided, but wrist strain occurs due to limited usage area and prolonged use
Solution Approach 1:
The patent replaces mechanical touchpads and track points with a radar-based gesture recognition system that detects hand movements in three-dimensional space. Users can perform input operations by making gestures in the air without needing to rest their wrists on small surfaces, thereby eliminating wrist strain while maintaining input control functionality.
Solution Approach 2:
The patent transitions from two-dimensional touchpad input to three-dimensional gesture-based input. The radar unit detects hand positions and movements in three-dimensional space, allowing users to perform input operations by gesturing in the air rather than confined to a small two-dimensional surface, thereby reducing wrist strain and expanding the input control space.
3Ease of operation
If visual virtual mice are used, then input control is provided, but additional devices and learning burden are required
Solution Approach 1:
The patent merges the radar unit and camera unit into a single integrated input control system. The radar unit detects hand gestures and the camera unit captures images for verification, combining two sensing modalities into one unified system that is built into the portable electronic device, thereby reducing the need for additional external devices while maintaining input control functionality.
Solution Approach 2:
The patent uses the camera unit as an intermediary to verify and supplement the radar-based gesture detection. The camera captures images of the user's hand gestures and provides visual verification, enhancing the accuracy and reliability of the input control system without requiring separate external image recognition devices.
4Measurement precision
If radar and camera units are combined for accurate target identification, then input accuracy is improved, but device complexity increases
Solution Approach 1:
The patent combines the radar unit and camera unit into an integrated system where the radar detects hand gestures and the camera captures verification images. By merging these two sensing modalities into a unified input control system built into the portable electronic device, the patent achieves high target identification accuracy while avoiding the complexity of separate external devices through systematic integration.
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
The system provides a convenient, accurate, and strain-free input interface that improves usability and reduces errors in cursor movement, enabling seamless integration into portable devices.
Implementation Method 1
transmitting a transmitting wave toward an identification space by a radar unit; receiving a reflected wave by the radar unit and obtaining a radar point cloud
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
An input interface controlling method includes: transmitting a transmitting wave toward an identification space by a radar unit; receiving a reflected wave by the radar unit and obtaining a radar point cloud; capturing a captured image of the identification space by a camera unit; and identifying a target point from the radar point cloud and the captured image, and a target position of the target point being used as an input interface.