Haptic Output Control via Frequency Distribution Analysis
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Solution Overview
Problem
Haptic output actuators struggle to respond to high-frequency input signals, leading to incomplete sensory feedback and a feeling of strangeness in users, as human perception shifts from haptic to auditory perception at higher frequencies.
Innovation Solution
An information processing system that generates waveforms based on relative movement in a virtual space and controls haptic and sound outputs according to frequency distribution, using filters to separate and process frequencies suitable for either haptic or sound outputs, ensuring a more realistic sensory experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If haptic output actuator is used to respond to high-frequency input signals, then the frequency response range is extended, but the output completeness deteriorates because the actuator cannot perform output when frequency exceeds its range
Solution Approach 1:
The patent introduces a frequency analysis unit and frequency distribution generation unit as intermediary components between the input signal and haptic output actuator. These units analyze the input signal's frequency characteristics and generate frequency distribution data, which is then used to appropriately control the haptic output. This intermediary processing allows the system to handle high-frequency signals by identifying and separating the frequency components that can be effectively rendered haptically from those that cannot.
2Reliability
If haptic output is provided for all frequency ranges, then the sensory feedback is complete, but the perception accuracy deteriorates because human perception shifts from haptic to auditory perception at higher frequencies
Solution Approach 1:
The patent applies local quality by providing different types of output for different frequency ranges. Specifically, haptic output is provided for frequency components within the actuator's effective range, while sound output is provided for high-frequency components that exceed the haptic actuator's capabilities. This frequency-dependent differentiation ensures that each frequency range is handled by the most appropriate output modality, maintaining perception accuracy while achieving sensory feedback completeness.
3Measurement precision
If frequency filtering is applied to separate haptic and sound outputs, then the perception accuracy is improved by matching output type to frequency range, but the device complexity increases due to additional processing units
Solution Approach 1:
The patent implements multi-functionality by designing the frequency analysis unit and frequency distribution generation unit to serve multiple purposes. These units not only analyze frequency characteristics for output type determination but also generate frequency distribution data that can be used for both haptic and sound output control. This universal processing approach reduces the need for separate dedicated components for each output type, thereby managing device complexity while maintaining perception accuracy.
Data Source
AI summary
There is provided an information processing apparatus including a waveform generation unit configured to generate a waveform according to a relative movement between two objects in a virtual space, and an output control unit configured to control a haptic output and a sound output on the basis of frequency distribution of the waveform generated by the waveform generation unit.