Rotary input mechanism for an electronic device

A wearable electronic device comprising:

• an enclosure;
• a processing element positioned at least partially within the enclosure;
• a wireless communication system at least partially within the enclosure and configured to receive information from a remote electronic device;
• a touch-sensitive display operably coupled to the processing element and configured to detect a touch input and provide a graphical output;
• a crown positioned along a side of the enclosure and defining:
• an end surface;
• and
• a peripheral surface extending about a periphery of the end surface;
• a sensing system configured to:
• detect a rotational input applied to the crown using an optical sensor;
• and
• detect a force input applied to the end surface of the crown, wherein:
• the graphical output is responsive to the rotational input, the force input, the touch input, and the information received from the remote electronic device.

A wearable electronic device comprising:

• an enclosure defining an opening extending from an exterior side of the enclosure to an interior side of the enclosure;
• a processing element positioned at least partially within the enclosure;
• a wireless communication system operatively coupled to the processing element and configured to wirelessly communicate with a remote electronic device;
• a crown configured to receive a rotational input about a rotation axis and a lateral input along a direction parallel to the rotation axis, the crown comprising:
• a crown body;
• and
• a shaft coupled to the crown body and extending through the opening;
• a sensing assembly coupled to the interior side of the enclosure and comprising:
• a first optical sensing system configured to detect the rotational input;
• and
• a second sensing system configured to detect the lateral input;
• and
• a touch-sensitive display operably coupled to the processing element and configured to receive a touch input and provide a graphical output, the graphical output responsive to information received from the remote electronic device, the touch input, the rotational input, and the lateral input.