公开(公告)号：US20200150772A1

公开(公告)日：2020-05-14

申请号：US16243767

申请日：2019-01-09

Applicant: Google LLC

Inventor： Philip Quinn ,  Zhuangdi Zhu

IPC: G06F3/01 ,  G01P15/18 ,  A61B5/1455 ,  A61B5/00

Abstract: The present disclosure provides for one-handed, touch-free interaction with smartwatches. An optical sensor in the smartwatch detects a user's hand and finger movements on the arm wearing the smartwatch. The gesture detection and recognition approaches in this design are lightweight and efficient to operate on small devices.

公开(公告)号：US10013081B1

公开(公告)日：2018-07-03

申请号：US15478773

申请日：2017-04-04

Applicant: Google LLC

Inventor： Tyler Reed Kugler ,  Alexey Polyudov ,  Kishore Sundara-Rajan ,  Debanjan Mukherjee ,  James B. Miller ,  James Aaron Cooper ,  Kelvin Kwong ,  Philip Quinn

IPC: G06F3/038 ,  G06F3/0354 ,  G06F1/16

CPC classification number: G06F3/038 ,  G06F1/1626 ,  G06F1/1662 ,  G06F3/0202 ,  G06F3/03547 ,  H04M1/236

Abstract: An apparatus utilizes multiple strain gauge (“SG”) sensing units which are each disposed adjacent an inner surface of the device housing. Electrical voltage generated by the SGs is amplified by one or more amplifiers to maximize the resolution between a voltage output of an SG when in a non-pressed state and a voltage output of the SG when in a pressed state. Additionally, an electronic circuit is configured to identify a baseline voltage output for an SG over a period of time for comparing to a voltage output for the SG when the SG is in a pressed state such that the pressed state of the SG can be identified by the electronic circuit by comparing a current output voltage of the SG to the identified baseline voltage.