Patent ID: 8217856

Claim:
A head-mounted display (HMD), comprising: a see-through display, wherein the see-though display is configured to provide a field of view of a real-world environment and to display generated images; a touch pad interface mounted on the HMD in relation to the see-through display such that the touch pad interface is located outside of the field of view; and a controller, wherein the controller is configured to: (a) receive, at least in part from a camera directed toward the touch pad interface, a record of a physical interaction outside of the field of view between a manipulator and the touch pad interface; (b) generate, based at least in part on the record, a visual representation of the physical interaction between the manipulator and the touch pad interface; and (c) cause the see-through display to show, inside of the field of view, the visual representation of the physical interaction between the manipulator and the touch pad interface.