Accelerometer Orientation Control for Seamless Rotatable Object Rotation
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Solution Overview
Problem
Existing controller systems for video game consoles lack intuitive control methods for rotatable objects on a display screen, particularly when the controller orientation exceeds 180 degrees, leading to discontinuity in axis switching during rotation.
Innovation Solution
Incorporating a three-axis accelerometer in the controller to determine orientation and using linear interpolation between x and y-axis outputs to smoothly transition between axis orientations, allowing for precise control of rotatable objects like a steering wheel across a 180-degree range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single accelerometer axis is used to control rotation, then the control is simple, but discontinuity occurs when switching between axes during rotation beyond 180 degrees
Solution Approach 1:
The patent transitions from using a single accelerometer axis to utilizing both x and y axes simultaneously. By examining outputs from multiple accelerometer axes and applying linear interpolation, the system achieves seamless rotation control beyond 180 degrees without discontinuity, effectively adding a dimensional aspect to the control mechanism.
2Reliability
If linear interpolation is used between accelerometer axes, then rotation smoothness is improved, but computational complexity increases
Solution Approach 1:
The patent changes the parameter processing method by applying linear interpolation between accelerometer axis outputs. This mathematical transformation smoothly transitions between axes during rotation, maintaining rotation smoothness while managing computational requirements through a straightforward interpolation algorithm.
3Measurement precision
If accelerometer outputs from both axes are used, then control accuracy is improved, but the processing complexity increases
Solution Approach 1:
The patent makes the controller system multi-functional by utilizing both x and y accelerometer axes simultaneously for orientation determination. This approach improves measurement precision across all rotation angles while the processing complexity is managed through systematic examination and interpolation of both axis outputs.
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 accurate control of rotatable objects on a display screen by using accelerometer outputs to determine controller orientation, reducing discontinuity and enhancing gaming experiences with seamless rotation capabilities.
Implementation Method 1
Incorporating a three-axis accelerometer in the controller to determine orientation
Data Source
AI summary
An example system and method controls a rotatable object on a display using a handheld control device comprising an accelerometer. The example system and method involve determining an orientation of the handheld control device using an interpolation of an output for a first axis of the accelerometer and an output for a second axis of the accelerometer. The rotation of the rotatable object is controlled based on the determined orientation.