Haptic Feedback Dynamic Range Compression for Distortion Control
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Solution Overview
Problem
Portable devices with haptic feedback struggle to provide a satisfying user experience due to distortion in haptic feedback when multiple commands are combined, leading to annoying and unclear haptic perceptions.
Innovation Solution
The implementation of a dynamic range compression mechanism in the electronic apparatus, which adjusts the control value of haptic feedback to ensure it remains within a vibration range, preventing distortion and enhancing the perceived haptic experience by using techniques like soft clipping, attack and release mechanisms, and input-look-ahead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple haptic commands are combined to provide versatile haptic feedback, then the functionality and user experience are improved, but distortion occurs when control values exceed the dynamic range
Solution Approach 1:
The patent applies dynamic range compression to haptic control values before they are sent to the actuation unit. This preliminary processing ensures that control values are compressed to stay within the valid dynamic range, preventing distortion from occurring in the first place when multiple haptic commands are combined.
Solution Approach 2:
The patent dynamically adjusts the control values through compression algorithms that modify the parameter range. By applying dynamic range compression, the system transforms control values to maintain them within the acceptable vibration range, ensuring reliable haptic feedback quality while supporting multiple combined commands.
2Force
If the control value range is expanded to provide stronger haptic feedback, then the intensity and impact are improved, but distortion occurs when values exceed the vibration range
Solution Approach 1:
The patent converts the potential harm of excessive control values causing distortion into a benefit by applying dynamic range compression. The compression algorithm processes control values to prevent them from exceeding the vibration range, transforming what would be a harmful overflow into a controlled, distortion-free output that maintains feedback intensity within acceptable limits.
Solution Approach 2:
The system uses dynamic range compression as a feedback mechanism to monitor and adjust control values in real-time. By continuously compressing control values to stay within the valid range, the system ensures that haptic feedback intensity remains strong yet distortion-free, creating a self-regulating control system.
Data Source
AI summary
An electronic apparatus with haptic feedback and a method for providing haptic feedback are provided. The method includes the following steps. An actuation unit is provided to generate haptic feedback. In response to at least a haptic command, a control value is dynamically generated to control the actuation unit to generate haptic feedback, wherein dynamic range compression is applied to dynamically generate the control value so as to control the magnitude of haptic feedback to be substantially within a vibration range.