Mid-air haptic textures
US11550395B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2020 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Aug 13, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T19/006
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described is a method for instilling the haptic dimension of texture to virtual and holographic objects using mid-air ultrasonic technology. A set of features is extracted from imported images using their associated displacement maps. Textural qualities such as the micro and macro roughness are then computed and fed to a haptic mapping function together with information about the dynamic motion of the user's hands during holographic touch. Mid-air haptic textures are then synthesized and projected onto the user's bare hands. Further, mid-air haptic technology enables tactile exploration of virtual objects in digital environments. When a user's prior and current expectations and rendered tactile texture differ, user immersion can break. A study aims at mitigating this by integrating user expectations into the rendering algorithm of mid-air haptic textures and establishes a relationship between visual and mid-air haptic roughness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.