Interfaces and methods of digital composition and editing of textures for rendering on tactile surfaces
AssigneeNorthwestern University
InventorDavid J. Meyer
Life of this patent
Estimating the term…
Abstract
This disclosure provides designer interfaces that present condensed representations of texture functions, the representations displaying selected control points that manipulate the representations, an algorithm that computes a texture function based on the positions of said selected control points, and the texture function generating a signal to control a force on an appendage of a user that touches a tactile surface, and methods of using the designer interfaces.
Claims11
A method for representing a tactile texture function and implementing a tactile texture on a tactile surface comprising the steps of:
- configuring a spectral magnitude function representing the magnitude of lateral force at a set of wavelengths wherein the magnitude at each wavelength is associated with a certain probability distribution;
- implementing an algorithm that computes a tactile texture function composed as the sum of a set of functions, wherein each function is the product of:
- a window function each having specific locations on a tactile surface and the spectral magnitude function drawn from the probability distribution;
- and
- implementing on the tactile surface a lateral force defined by the computed texture function.
A method for representing and implementing a tactile texture on a tactile surface comprising the steps of:
- receiving a pre-composed texture data
- configuring a spectral magnitude function of the pre-composed texture data representing the magnitude of lateral force at a set of wavelengths wherein the magnitude at each wavelength is associated with a certain probability distribution;
- implementing an algorithm that computes a texture function composed as the sum of a set of functions, wherein each function is the product of:
- a window function each having specific locations on a touch surface and the spectral magnitude function drawn from the probability distribution;
- and
- rendering to the tactile surface a lateral force defined by the computed texture function.
Dependencies are inferred from the claim text.