公开(公告)号：CA2937956A1

公开(公告)日：2015-08-27

申请号：CA2937956

申请日：2015-02-20

Applicant: QUALCOMM INC

Inventor： ALTMAN NATHAN ,  PADOVANI NICCOLO ,  BORNSTEIN GILAD

IPC: G06F3/043 ,  G06F3/0346 ,  G06F3/0354 ,  G06F3/0488

Abstract: Implementations of the technology described herein provide a method for detecting gesture commands using an ultrasonic pen system. The system has a pen and a user device. Detection of gesture commands is based on two-dimensional gestures relative to the screen of a user device, three-dimensional gestures relative to the screen of the user device, roll/rotation around a longitudinal axis of the pen body, and micro-twisting around the longitudinal axis of the pen body. The user device receives the gestures and translates them into commands such as UNDO and BACK.