Tilt Angle Correction for Game Controller Steering
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Solution Overview
Problem
Existing game controllers with 3-axis acceleration sensors, where the tilt angle of the controller is directly associated with the rotation angle of a steering wheel, can lead to abrupt transitions from full left to full right turns, causing user intention mismatch and deteriorating controllability.
Innovation Solution
A computer-readable storage medium with an information processing program that includes angle calculation, first determination, and correction means to adjust the tilt angle when it crosses a boundary, ensuring the tilt angle remains on the side it was before crossing, thereby preventing unintended game outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the tilt angle of the controller is directly associated with the rotation angle of the steering wheel in one-to-one correspondence, then the controller can provide precise steering control within normal ranges, but abrupt transitions occur when the controller is tilted excessively (e.g., from 170° left to 170° right), causing the steering wheel to jump from full left to full right turn
Solution Approach 1:
The patent applies dynamics by making the association between controller tilt angle and steering wheel rotation angle non-static. Instead of a fixed one-to-one correspondence, the system dynamically adjusts the mapping based on the current tilt angle range. When the controller is within normal tilt ranges, direct correspondence is maintained for precision. When excessive tilt is detected, the system dynamically switches to a corrected mapping that prevents abrupt transitions, thus maintaining control reliability while preserving measurement precision in normal operating conditions.
Solution Approach 2:
The patent changes the parameter mapping relationship between tilt angle and steering angle based on the operating range. By detecting when the tilt angle exceeds predetermined thresholds, the system changes the association parameters to prevent abrupt transitions. This allows the system to maintain high measurement precision within normal ranges while ensuring control reliability during edge cases through parameter adjustment.
2Adaptability or versatility
If the tilt angle range is extended to allow greater steering input, then the user has more steering authority, but the likelihood of excessive tilting increases, causing unintended steering transitions
Solution Approach 1:
The patent applies preliminary action by establishing predetermined tilt angle thresholds before excessive tilting occurs. The system pre-defines safe operating ranges and prepares correction mappings in advance. When the controller tilt approaches these predetermined limits, the system is already configured to prevent abrupt transitions, thus maintaining ease of operation while allowing extended steering control range through proper threshold setting.
3Reliability
If the tilt angle is corrected to prevent abrupt transitions, then control reliability is improved, but the steering response may become less direct or require additional correction logic
Solution Approach 1:
The patent applies segmentation by dividing the tilt angle range into distinct segments or zones. Each segment has its own association rules with the steering wheel angle. By segmenting the control range into normal operating zones and edge-case zones, the system can apply simple direct mapping in most segments while using correction logic only in specific boundary segments, thus maintaining reliability without excessive overall complexity.
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
This solution improves controllability by ensuring the game output aligns with user intention, preventing abrupt transitions and maintaining accurate control, even when the user excessively tilts the controller.
Implementation Method 1
the tilt angle of the controller is calculated using the detection result of the acceleration sensor
Data Source
AI summary
An information processing device performs a game process based on a tilt angle of an input device that can be rotated to any tilt about a predetermined axis. First, a game apparatus calculates a tilt angle representing the tilt of the input device. Then, the game apparatus determines whether the calculated tilt angle has transitioned across the boundary between the upper limit value and the lower limit value of the tilt angle. If the tilt angle has transitioned across the boundary, the tilt angle to be used in a predetermined information process is corrected to a predetermined value that is on one side of the boundary on which the tilt angle was before crossing the boundary.