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US 2020/0050356 A1Published application
Interface providing localised friction modulation by acoustic lubrication
AssigneeCommissariat A L'energie Atomique Et Aux Enerfies Alternatives
InventorCharles HUDIN
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Abstract
A touch interface comprising a first surface and n actuators designed to vibrate said first surface, n being an integer >1. A control unit is able to generate a control signal for each actuator, each control signal being a harmonic signal comprising a carrier signal at a non-radiative frequency.
Claims20
1-17. (canceled)
An interface including:
- a first surface,
- at least one actuator for vibrating said first surface in a direction transverse to the first surface, and
- a control unit configured to generate a driving signal of said at least one actuator, said driving signal being a harmonic signal including a carrier signal at a non-radiative frequency.
A method for rendering a texture feeling by means of a touch interface including a surface and at least one actuator able to vibrate said surface, said method including:
- the step of generating a driving signal including a harmonic signal comprising a carrier signal at a non-radiative frequency, and
- the step of sending the driving signal to the at least one actuator so as to generate a modification in a friction coefficient of a zone of a surface covered by the at least one actuator.
Dependencies are inferred from the claim text.