US Patent 10496197 Electronic device

An electronic device that includes a rotary operator that changes a parameter value of the device itself, the rotary operator having a first contact region and a second contact region positioned on an opposite side of the first contact region with respect to a rotation axis of the rotary operator and being rotatably operated in such a manner that a finger of a user slides in a circumferential direction of the rotary operator with the finger contacting any of the first and second contact regions; and a changing direction setting unit that sets a changing direction of the parameter value with respect to a rotation direction of the rotary operator.