公开(公告)号：US20180364850A1

公开(公告)日：2018-12-20

申请号：US15625952

申请日：2017-06-16

Applicant: Apple Inc.

Inventor： Michael Vosgueritchian ,  Sinan Filiz ,  James E. Pedder ,  John Stephen Smith ,  Saahil Mehra ,  Xiaofan Niu

IPC: G06F3/041 ,  G06F3/045 ,  G06F3/044

CPC classification number: G06F3/0414 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04105 ,  G06F2203/04106

Abstract: Structures and methods are disclosed for an electronic device having an input surface that uses dual sensors to measure forces applied to the input surface. The forces can be estimated over a greater range of values than would be possible with either sensor alone. A second sensor can be used after a first sensor has reached a limit. A first sensor can be a strain sensor and a second sensor a pressure sensor. Both sensors may be resistance based, with signals from both sensors can be combined and measured by processing circuitry. Each sensor type may be part of planar arrays disposed beneath the input surface.