Analog Stick Dead-Zone Calibration for Drift Compensation
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Solution Overview
Problem
Analogue sticks in gaming controllers suffer from drift, causing false inputs when not operated, which negatively affect the gaming experience.
Innovation Solution
A method to calibrate the dead-zone of the analogue stick by determining a stationary time period and adjusting its geometry when the stick is not in use, ensuring the current position due to drift is within the adjusted dead-zone, thereby compensating for drift without affecting sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dead-zone geometry is adjusted to compensate for drift, then drift compensation is improved, but the controller responsiveness may be affected
Solution Approach 1:
The dead-zone geometry is made dynamic and adjustable rather than fixed. The system automatically adjusts the dead-zone shape and size based on detected drift conditions, allowing optimal compensation when needed while maintaining responsiveness during normal operation. This dynamic adaptation resolves the contradiction by making the dead-zone flexible enough to handle both drift compensation and responsive input detection.
Solution Approach 2:
The patent changes the parameters defining the dead-zone geometry (size, shape, position) based on drift detection. By modifying these parameters dynamically, the system can expand the dead-zone to compensate for drift when detected, while reducing it to maintain responsiveness during normal use, thus resolving the contradiction between reliability and ease of operation.
2Reliability
If the dead-zone is enlarged to include drift positions, then false inputs are reduced, but the sensitivity of the analogue stick is compromised
Solution Approach 1:
The dead-zone size and shape are dynamically adjusted based on drift detection rather than being fixed. When drift is detected, the dead-zone expands to encompass drift positions, reducing false inputs. When drift is absent, the dead-zone returns to its normal size, preserving sensitivity. This dynamic behavior resolves the contradiction between reducing false inputs and maintaining sensitivity.
Solution Approach 2:
The system performs preliminary detection of drift conditions before adjusting the dead-zone. By detecting drift in advance and preparing the appropriate dead-zone configuration, the system can proactively prevent false inputs while maintaining sensitivity during normal operation, resolving the contradiction between false input reduction and sensitivity preservation.
Data Source
AI summary
A method for calibrating a dead-zone of an analogue stick of a controller for a gaming system, the method comprising: determining a stationary time period, wherein the stationary time period is a period of time since the controller previously moved; when the stationary time period is equal to or greater than a threshold time period, determining a current position of the analogue stick of the controller relative to a neutral position of the analogue stick; and when the current position of the analogue stick is outside a dead-zone of the analogue stick, generating an adjusted dead-zone by adjusting a geometry of the dead-zone, wherein the current position of the analogue stick is inside the adjusted dead-zone.