Haptic Controller Coordination for Vibration-Sensor Interference
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Solution Overview
Problem
Existing haptic systems suffer from latency issues in processing signals from force sensors, leading to delayed haptic responses, and interference between vibrational output systems and input sensory systems, which affects the accuracy of tactile feedback in devices like mobile phones and video game controllers.
Innovation Solution
A controller is introduced to manage the operation of both vibrational output and input sensor systems, featuring an adjustment module that receives indications of activation or deactivation to reduce interference by filtering signals and adjusting operations dynamically, ensuring integer harmonic tones fall outside the input sensor's frequency band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the vibrational output system operates at high amplitude to provide strong haptic feedback, then the tactile feedback becomes more prominent and noticeable, but the interference caused to the input sensor system increases
Solution Approach 1:
The patent introduces a controller as an intermediary component that manages the interaction between the vibrational output system and input sensor system. The controller receives indications from both systems and dynamically adjusts their operations to reduce interference while maintaining haptic feedback effectiveness. This mediator coordinates timing and parameters to prevent the sensor from detecting spurious signals during high-amplitude vibration periods.
Solution Approach 2:
The system dynamically adjusts the operation of both the vibrational output system and input sensor system based on real-time conditions. The controller modifies vibration amplitude, frequency, and sensor sampling timing adaptively to optimize the balance between providing strong haptic feedback and minimizing interference to sensor accuracy.
2Loss of time
If the processing latency is reduced to provide faster haptic response, then the tactile feedback becomes more responsive to user interaction, but the accuracy of signal processing may be compromised
Solution Approach 1:
The controller is configured to receive indications of activation or deactivation of the vibrational output system in advance and proactively adjust sensor operations before interference occurs. By anticipating when vibration will occur and pre-adjusting sensor timing or thresholds, the system minimizes processing latency while maintaining accuracy through preventive coordination rather than reactive correction.
3Object-generated harmful factors
If the vibrational output system is activated to provide tactile feedback, then user notification is enhanced, but the input sensor system may detect spurious signals reducing measurement accuracy
Solution Approach 1:
The system applies preliminary anti-action by having the controller receive indications of vibrational output activation and proactively adjust sensor operations to counteract expected interference. The controller modifies sensor timing, thresholds, or operational states in advance to prevent spurious signal detection, thereby maintaining measurement accuracy even when strong tactile feedback is delivered.
Data Source
AI summary
Embodiments described herein relate to methods and apparatuses for controlling an operation of a vibrational output system and/or an operation of an input sensor system, wherein the controller is for use in a device comprising the vibrational output system and the input sensor system. A controller comprises an input configured to receive an indication of activation or de-activation of an output of the vibrational output system; and an adjustment module configured to adjust the operation of the vibrational output system and/or the operation of the input sensor system based on the indication to reduce an interference expected to be caused by the output of the vibrational output system on the input sensory system.