Tactile Feedback Control for Flexible Object Collision
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Solution Overview
Problem
Existing methods for tactile feedback in haptics technology fail to appropriately match the presentation time of tactile stimuli with the contact time of visual feedback, particularly in consideration of the flexibility of objects.
Innovation Solution
An information processing apparatus and method that control the presentation period of tactile feedback based on the flexibility of an object, adjusting the vibration waveforms to accurately represent the collision and rebound characteristics of flexible and non-flexible objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the presentation time of tactile stimulus is set to the same time as contact time in display video, then the synchronization between visual and tactile feedback is improved, but the accuracy of tactile feedback for flexible objects deteriorates
Solution Approach 1:
The patent applies dynamics by making the tactile feedback presentation time variable rather than fixed. The control unit dynamically adjusts the presentation time of tactile feedback based on the flexibility of the object being represented. For flexible objects, the presentation time is extended beyond the visual contact time to accurately reproduce the deformation and rebound characteristics, while for rigid objects the presentation time matches the visual contact time for precise synchronization.
Solution Approach 2:
The patent changes the parameter of presentation time for tactile feedback based on object flexibility. The control unit determines the flexibility of the object and adjusts the presentation time parameter accordingly. This parameter change allows the system to adapt tactile feedback to different object types, ensuring both accurate synchronization for rigid objects and realistic deformation representation for flexible objects.
2Reliability
If the presentation time of tactile feedback is extended to represent flexible object deformation, then the realism of tactile sensation is improved, but the actuator load increases
Solution Approach 1:
The patent applies local quality by differentiating the tactile feedback characteristics based on the local properties of the object being represented. For flexible objects, the system extends presentation time and adjusts vibration patterns to represent deformation and rebound, while for rigid objects it uses shorter presentation time with different vibration characteristics. This localized adaptation ensures realistic tactile feedback without unnecessarily increasing actuator load for all objects.
Solution Approach 2:
The system dynamically adjusts the presentation time and vibration patterns of tactile feedback based on the detected or specified flexibility of the object. This dynamic adaptation allows the actuator to operate at appropriate intensity levels for different object types, maintaining realism for flexible objects while avoiding excessive load by not applying the same extended presentation time to rigid objects.
Data Source
AI summary
An information processing apparatus (10) has a control unit (11). The control unit (11) controls, on the basis of a flexibility of an object, a presentation period of tactile feedback presented in response to a collision of the object.