Patent ID: 11880506
Assignee: SENSEL, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 6:
7. The keyboard system of claim 1:
wherein the tactile layer comprises an elastic sublayer:
interposed between the substrate and the array of magnetic elements;
configured to locally compress to enable movement of the first magnetic element toward the first inductor responsive to application of force over the first key location on the tactile layer; and
configured to locally compress to enable movement of a second magnetic element, in the array of magnetic elements, toward a second inductor, in the array of inductors, responsive to application of force over a second key location, in the array of key locations, on the tactile layer;

wherein the first magnetic element inductively couples to the first inductor and induces current flow in a first direction through the first inductor responsive to movement toward the first inductor;
wherein the second magnetic element inductively couples to the second inductor and induces current flow in the first direction through the second inductor responsive to movement toward the second inductor; and
wherein the controller is further configured to, at a second time, in response to detecting a second change in electrical value at the second inductor:
register a second keystroke of a second key type associated with the second key location defined over the second inductor; and
drive the oscillating voltage across the second inductor during a second haptic feedback cycle to:
induce alternating magnetic coupling between the second inductor and the second magnetic element arranged within the tactile layer at the second key location; and
oscillate the tactile layer, at the second key location, relative to the substrate.