Patent ID: 11860587
Assignee: APPLE INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 14:
15. A method for producing variable haptic output as a crown of an electronic watch is rotated, the method comprising:
detecting a rotational input at the crown;
determining, by a processing unit of the electronic watch, a resistive torque pattern to apply to the crown as the crown rotates;
outputting, by the processing unit, a signal to provide the resistive torque pattern; and
in response to the signal to provide the resistive torque pattern, varying a resistive torque of the crown to produce the resistive torque pattern, the varying comprising causing an actuator to vary a force applied to an outer peripheral surface of a shaft assembly of the crown by a friction element that is configured to contact the outer peripheral surface of the shaft assembly, the outer peripheral surface of the shaft assembly positioned between a dial body of the crown and an end surface of the shaft assembly.