Linear Haptic Device Waveform Reproduction via Frequency Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic device controllers struggle to provide immersive haptic feedback efficiently, particularly in replicating complex haptic waveforms while managing power consumption effectively.
Innovation Solution
A method and device for providing haptic feedback that involves obtaining a provided haptic waveform, identifying vibrational and audio information, attenuating the audio information, remixing the vibrational and attenuated audio information, and driving a linear haptic device with the output haptic waveform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a linear haptic device attempts to reproduce complex haptic waveforms across its full frequency range, then the immersion and realism of haptic feedback is improved, but power consumption increases significantly
Solution Approach 1:
The haptic waveform is segmented into multiple frequency bands using a crossover network, with each band processed independently. Low-frequency components drive the linear haptic device for tactile feedback, while high-frequency components are attenuated or processed separately to reduce power consumption while maintaining overall haptic quality.
Solution Approach 2:
The system dynamically adjusts the amplitude and frequency parameters of the haptic waveform based on the desired haptic effect and power constraints. By modifying these parameters in real-time, the system optimizes the balance between haptic feedback quality and power consumption during device operation.
2Manufacturing precision
If the haptic device operates at high power levels to reproduce complex waveforms accurately, then the fidelity of haptic reproduction is improved, but the device generates more heat and consumes more battery life
Solution Approach 1:
The system applies partial action by selectively activating only the frequency components necessary for the current haptic effect. Instead of reproducing the entire waveform spectrum at full power, the system adjusts the amplitude of individual frequency bands, applying full power only where needed and reducing power in less critical frequency ranges.
3Reliability
If the system processes and remixes multiple frequency bands to create immersive haptic feedback, then the user immersion is enhanced, but the computational complexity and processing requirements increase
Solution Approach 1:
The signal processing architecture is segmented into distinct modules: a crossover network that separates frequency bands, independent processing channels for each band, and a mixing stage that combines the processed signals. This modular segmentation reduces the computational complexity of each individual processing stage while maintaining the overall immersive haptic effect.
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 approach enables efficient and immersive haptic feedback by effectively managing power consumption and replicating complex haptic waveforms, enhancing user immersion in virtual environments.
Implementation Method 1
driving a linear haptic device at least partially according to the output haptic waveform
Data Source
AI summary
A device may obtain a provided haptic waveform. A device may identify vibrational information of the provided haptic waveform in a crossover network. A device may identify audio information of the provided haptic waveform in the crossover network. A device may attenuate at least a portion of the audio information to create attenuated audio information. A device may remix the vibrational information and the attenuated audio information in an output haptic waveform. A device may drive a linear haptic device at least partially according to the output haptic waveform.