Mobile Device Trajectory Recognition for External Input
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Solution Overview
Problem
Existing mobile devices struggle to accurately recognize input commands made using input devices outside their surface, particularly in virtual or augmented reality environments, due to difficulties in determining reference positions and calculating trajectories without additional setup or complex calculations.
Innovation Solution
An electronic device system comprising an input device and a mobile device that communicates to determine reference coordinates, relative position information, and motion information to display or transmit movement trajectories, allowing input commands to be recognized without additional user positioning or complex calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If input commands are made outside the mobile device surface (in VR/AR environments), then user interaction versatility is improved, but the ability to accurately recognize and determine reference positions deteriorates
Solution Approach 1:
The patent introduces a camera as an intermediary device to capture images of the input device's position and trajectory in the external space. The camera acts as a mediator between the input device operating in VR/AR environment and the mobile device that needs to recognize these inputs, enabling accurate reference position determination without requiring the input device to be in direct contact with the mobile device surface.
Solution Approach 2:
The patent creates a visual copy of the input device's trajectory by capturing images through the camera. Instead of directly measuring the physical position of the input device in 3D space, the system captures a visual representation (image) of the trajectory and processes this copy to determine the reference position and movement path, enabling accurate recognition of external inputs.
2Measurement precision
If additional setup operations are performed to enable external input recognition, then measurement precision is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent enables the mobile device to automatically perform trajectory recognition using its existing camera and processor capabilities. The system uses the camera to capture images, the processor to analyze these images and determine trajectories, and the display to show the results - all without requiring external specialized equipment or complex manual setup operations.
Solution Approach 2:
The patent makes the mobile device's camera serve multiple functions: it is used for both normal photography/camera operations and for capturing input device trajectories. This multi-functionality eliminates the need for dedicated trajectory detection equipment, reducing device complexity and setup requirements while maintaining accurate trajectory recognition.
3Measurement precision
If complex calculations are performed to define neighboring space, then measurement precision is improved, but processing time and ease of operation deteriorate
Solution Approach 1:
The patent replaces complex mathematical calculations for defining neighboring space with a visual approach using camera images. Instead of performing complex 3D coordinate transformations and spatial calculations, the system captures images that directly represent the spatial relationships and processes these visual data to determine trajectories and reference positions more efficiently.
Data Source
AI summary
The electronic device according to an embodiment includes: an input device; and a mobile device configured to communicate with the input device, wherein the mobile device determines a position of the mobile device or a position of a first external device as reference coordinates, receives relative position information of the input device, with respect to the reference coordinates, and motion information of the input device, determines a movement trajectory based on the relative position information and the motion information, and displays the movement trajectory or transmits the movement trajectory to a second external device.