Sensor-Based Tabletop Motion Detection for Mobile Game Maps
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Solution Overview
Problem
Traditional motion detection systems for mobile devices on flat surfaces rely heavily on visual inputs from cameras, which are ineffective when the camera is obstructed, leading to inaccurate movement detection, high battery consumption, and processing power demands.
Innovation Solution
Integrate data from multiple motion sensors like accelerometers and gyroscopes to calculate device movement on a flat surface, applying damping factors, motion thresholds, and debounce delays to ensure accurate and efficient motion detection, with a cascading sensor strategy to maintain performance across varying device quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If camera-based motion detection is used, then movement detection capability is provided, but battery consumption increases and processing power requirements increase
Solution Approach 1:
The patent replaces the optical/mechanical camera-based motion detection system with an electrical sensor-based system using accelerometers and gyroscopes. This substitution eliminates the need for continuous visual processing, significantly reducing battery consumption and processing power requirements while maintaining movement detection capability for tabletop gaming scenarios.
Solution Approach 2:
The patent extracts the motion detection function from the camera system and implements it through dedicated motion sensors (accelerometers and gyroscopes). This separation allows the camera to be disabled or used minimally, reducing its energy consumption and processing burden while the extracted motion sensing functionality handles gameplay input independently.
2Reliability
If camera-based motion detection is used, then movement detection capability is provided, but device complexity increases
Solution Approach 1:
The patent replaces the complex camera-based vision processing system with simpler electrical sensors (accelerometers and gyroscopes) that directly measure motion parameters. This substitution reduces computational complexity, eliminates the need for image processing algorithms, and simplifies the overall system architecture while providing sufficient motion detection for the intended application.
3Reliability
If camera-based motion detection is used, then movement detection can be performed, but accuracy decreases when camera is obstructed
Solution Approach 1:
The patent extracts the motion detection functionality from the camera system and implements it through dedicated motion sensors that are not affected by optical obstructions. This extraction ensures reliable movement detection even when the camera view is blocked by the tabletop surface or other objects, as accelerometers and gyroscopes measure motion internally without requiring external visual input.
Solution Approach 2:
The patent introduces motion sensors as an intermediary between the physical movement and the digital input system. These sensors act as a mediator that translates physical acceleration and rotation directly into actionable data, bypassing the need for camera-based visual interpretation and eliminating the problem of optical obstruction entirely.
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
Achieves precise and reliable movement detection on flat surfaces without cameras, reducing battery drain and processing power, while ensuring smooth and responsive gameplay experiences.
Implementation Method 1
The system integrates sensor data from sensors such as an accelerometer and/or gyroscope to determine a set of metric values of the mobile device
Implementation Method 2
The system integrates sensor data from sensors such as an accelerometer and/or gyroscope to determine a set of metric values of the mobile device
Data Source
AI summary
Disclosed herein are systems and associated methods for detecting the motion of a mobile device through sensors of the mobile device. The systems and methods include providing a mobile device with a velocity and a position on a flat surface, where the mobile device displays a game map. The system receives sensor data from one or more motion sensors of the mobile device. The system filters the sensor data to reduce noise and variability of the sensor data. The filtered sensor data is evaluated to determine linear acceleration and angular velocity of the mobile device. The system translates the linear acceleration and the angular velocity of the mobile device to a set of pixel movements of the game map, and displays the set of pixel movements of the game map on the mobile device.