USER INTERFACE SYSTEMS FOR HEAD-WORN COMPUTERS
Aspects of the present disclosure relates to user interface systems and methods for use in head-worn computing systems. A plurality of ultrasonic receivers may be positioned separately in the head-worn computer, wherein each of the plurality of ultrasonic receivers is adapted to identify a direction of a source that generates an ultrasonic signal, and a processor adapted to calculate a plurality of positions of an external user interface based on an ultrasonic signal communicated from the external user interface and further based on each of the plurality of ultrasonic receiver's direction identification, the processor further adapted to generate a control signal to control a software application operating on the head-worn computer based on the plurality of positions.
1 . (canceled)
2 . An external user interface, comprising:
an ultrasonic signal generator, a strain gauge user interface, and an inertial measurement unit (“IMU”),
wherein the ultrasonic signal generator is adapted to emit a digital ultrasonic signal in proximity to a head-worn computer,
wherein the head worn computer comprises a plurality of separately positioned ultrasonic signal receivers and a processor adapted to identify the external user interface's position based, at least in part, on a comparison of an ultrasonic signal received at the plurality of ultrasonic receivers, and
wherein the strain gauge user interface is structured to produce a control signal for the head-worn computer.
3 . The external user interface of claim 2 , wherein the strain gauge is structured to produce a plurality of control signals for the head-worn computer based, at least in part, on a position of interaction with the strain gauge.
4 . The external user interface of claim 3 , wherein the strain gauge comprises a substantially flat plane.
5 . The external user interface of claim 1 , wherein the external user interface is mechanically structured to be mounted on a finger of a user.