Patent ID: 11886650
Assignee: APPLE INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 9:
10. An electronic system comprising:
a stylus having an elongate body, a tip at an end of the elongate body, and first light emitters longitudinally spaced apart from a second light emitter on the elongate body, the first light emitters being arranged to be separated from each other along a circumference of the elongate body, the second light emitter forming a ring that extends continuously about the circumference of the elongate body; and
a head-mounted device comprising a display configured to present graphics to a user wearing the head-mounted device, and an outward facing camera sensitive to the first light emitters and second light emitter, wherein the head-mounted device is configured to detect motion of the stylus in three-dimensional space based on detection of the first light emitters and second light emitter.