| 摘要 |
A user interface system includes a display, a user interface including a trackball, a brake assembly configured to cooperate with the trackball to limit rotational movement of the trackball to about predetermined axes, and a control system in electrical communication with the display, the user interface, and the brake assembly. The control system is configured to operate in at least one input status mode including a first input status mode and a second input status mode based on desired directional input of the trackball. The control system includes a trackball control module. When in the first input status mode, the trackball control module communicates with the brake assembly to restrict rotation of the trackball to about a first axis. When in the second input status mode, the trackball control module communicates with the brake assembly to restrict rotation of the trackball to about a second axis.
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