公开(公告)号：US20170153760A1

公开(公告)日：2017-06-01

申请号：US15089415

申请日：2016-04-01

Applicant: Apple Inc.

Inventor： Vinay CHAWDA ,  Vikrham GOWREESUNKER ,  Leah M. GUM ,  Teera SONGATIKAMAS

IPC: G06F3/041

CPC classification number: G06F3/0418 ,  G06F1/1626 ,  G06F1/1643 ,  G06F1/1694 ,  G06F3/0414 ,  G06F3/0416 ,  G06F3/044 ,  G06F2200/1637 ,  G06F2203/04106

Abstract: An electronic device can include gain-based error tracking for improved force sensing performance. The electronic device can comprise a plurality of force sensors (e.g., coupled to a touch sensor panel configured to detect an object touching the touch sensor panel). The plurality of force sensors can be configured to detect an amount of force with which the object touches the touch sensor panel. A processor can be coupled to the plurality of force sensors, and the processor can be configured to: in accordance with a determination that an acceleration characteristic of the electronic device is less than a threshold, determine an error metric for one or more of the plurality of force sensors, and in accordance with a determination that the acceleration characteristic of the electronic device is not less than the threshold, forgo determining the error metric for one or more of the plurality of force sensors.

公开(公告)号：US20220091685A1

公开(公告)日：2022-03-24

申请号：US17031549

申请日：2020-09-24

Applicant: Apple Inc.

Inventor： Daniel Jacob Benjamin BECHSTEIN ,  John Stephen SMITH ,  Siddharth SHEKAR ,  Teera SONGATIKAMAS ,  Elvis Mwenda KIBITI ,  Jared A. BRAUNER ,  Lindsay Diane Rego CORBET ,  Wang Chung Alston CHEUNG ,  Vipin AYANOOR-VITIKKATE ,  Nitin SITARAMAN ,  Joyan Gratian SANCTIS ,  Blake R. MARSHALL

IPC: G06F3/0354 ,  G06F3/044 ,  G06F3/038

Abstract: In some examples, a stylus can include a conductive shield. In some examples, the conductive shield can include a plurality of traces along an edge of a printed circuit board (PCB) including the stylus circuitry. In some examples, the conductive shield can include a shield can coupled to the PCB and disposed around the components of the stylus circuitry. In some examples, the conductive shield can include a hollow portion into which the stylus circuitry can be disposed and a solid portion that can act as a reference electrode. In some examples, the conductive shield can include a hollow sleeve disposed around the stylus circuitry. In some examples, the conductive sleeve can be attached to the PCB. In some examples, the conductive sleeve can be disposed between layers of a housing of the stylus. In some examples, the conductive sleeve can be integrated with the stylus housing.