| CPC G01D 5/1655 (2013.01) [G01D 5/2412 (2013.01); G04B 3/04 (2013.01); G04G 21/00 (2013.01)] | 21 Claims |
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1. An electronic watch comprising:
a housing;
a display positioned at least partially within the housing;
a crown coupled to the housing and configured to receive rotational and translational inputs, the crown comprising:
a shaft configured to rotate in response to a rotational input;
a resistance member defining at least a portion of a contact surface and configured to remain stationary relative to the shaft;
an electrical sink conductively coupled to the resistance member to define a fixed reference point along the resistance member; and
a contact member coupled to the shaft and configured to rotate in conjunction with the shaft, the contact member in contact with the contact surface of the resistance member at a contact point that changes as the shaft rotates; and
a processor configured to:
cause an input voltage to be applied to the contact member;
receive an output signal corresponding to an output voltage, wherein the output voltage varies based on a location of the contact point along the resistance member;
determine an angular position, a direction of rotation, or a speed of rotation of the shaft using the output signal; and
vary a graphic shown on the display in accordance with the determined angular position, direction of rotation, or speed of rotation of the shaft.
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