| 摘要 |
Embodiments related to dual mode rotatable input devices that permit both resistive and non-resistive rotation are disclosed. One embodiment comprises a stationary hub, a rotatable member rotatable around the stationary hub, and a resistive rotation mechanism forming an interface between the stationary hub and the rotatable member. The resistive rotation mechanism comprises a resistive surface and a movable interface member configured to selectively contact the resistive surface, wherein the resistive surface and the movable interface member move relative to one another with rotation of the rotatable member. The resistive mechanism further comprises a biasing mechanism that urges the movable interface member into engagement with the resistive surface when a rotational velocity of the rotatable member is below a threshold velocity, and allows separation of the interface member and the resistive surface when the rotational velocity of the rotatable member is above the threshold velocity. |
